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authorStan Shebs <shebs@codesourcery.com>1999-04-16 01:35:26 +0000
committerStan Shebs <shebs@codesourcery.com>1999-04-16 01:35:26 +0000
commitc906108c21474dfb4ed285bcc0ac6fe02cd400cc (patch)
treea0015aa5cedc19ccbab307251353a41722a3ae13 /mmalloc
parentThis commit was generated by cvs2svn to track changes on a CVS vendor (diff)
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Initial creation of sourceware repositorygdb-4_18-branchpoint
Diffstat (limited to 'mmalloc')
-rw-r--r--mmalloc/COPYING.LIB481
-rw-r--r--mmalloc/ChangeLog427
-rw-r--r--mmalloc/Makefile.in208
-rw-r--r--mmalloc/TODO17
-rw-r--r--mmalloc/attach.c218
-rwxr-xr-xmmalloc/configure1623
-rw-r--r--mmalloc/configure.in13
-rw-r--r--mmalloc/detach.c71
-rw-r--r--mmalloc/keys.c66
-rw-r--r--mmalloc/mcalloc.c54
-rw-r--r--mmalloc/mfree.c247
-rw-r--r--mmalloc/mm.c37
-rw-r--r--mmalloc/mmalloc.c337
-rw-r--r--mmalloc/mmalloc.h62
-rw-r--r--mmalloc/mmalloc.texi258
-rw-r--r--mmalloc/mmap-sup.c205
-rw-r--r--mmalloc/mmcheck.c223
-rw-r--r--mmalloc/mmemalign.c62
-rw-r--r--mmalloc/mmprivate.h343
-rw-r--r--mmalloc/mmstats.c46
-rw-r--r--mmalloc/mmtrace.awk36
-rw-r--r--mmalloc/mmtrace.c171
-rw-r--r--mmalloc/mrealloc.c163
-rw-r--r--mmalloc/mvalloc.c48
-rw-r--r--mmalloc/sbrk-sup.c97
25 files changed, 5513 insertions, 0 deletions
diff --git a/mmalloc/COPYING.LIB b/mmalloc/COPYING.LIB
new file mode 100644
index 00000000000..eb685a5ec98
--- /dev/null
+++ b/mmalloc/COPYING.LIB
@@ -0,0 +1,481 @@
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diff --git a/mmalloc/ChangeLog b/mmalloc/ChangeLog
new file mode 100644
index 00000000000..86ca15ae3d5
--- /dev/null
+++ b/mmalloc/ChangeLog
@@ -0,0 +1,427 @@
+1999-01-04 Jason Molenda (jsm@bugshack.cygnus.com)
+
+ * configure.in: Requires autoconf 2.12.1 or higher.
+ * configure: Regenerated.
+
+1998-07-24 Jim Blandy <jimb@zwingli.cygnus.com>
+
+ * mcalloc.c: #include <sys/types.h> before <string.h>. HP/UX 11.0
+ needs this.
+
+Thu Apr 23 12:19:22 1998 Philippe De Muyter <phdm@macqel.be>
+
+ * mmalloc.h: Include sys/types.h and stdio.h #ifndef HAVE_STDDEF_H.
+ * mmprivate.h: Do not handle HAVE_STDDEF_H here, since we include
+ mmalloc.h.
+
+Tue Mar 24 17:07:02 1998 Stu Grossman <grossman@bhuna.cygnus.co.uk>
+
+ * Makefile.in: Get SHELL from configure.
+ * configure: Regenerate with autoconf 2.12.1 to fix shell issues for
+ NT native builds.
+
+Mon Feb 7 13:06:45 1997 Philippe De Muyter <phdm@macqel.be>
+
+ * mmalloc/detach.c: Do not include fcntl.h.
+
+Thu Aug 28 13:15:07 1997 Andrew Cagney <cagney@b1.cygnus.com>
+
+ * mrealloc.c (realloc): Store result in local variable before
+ returning it. Makes debugging much easier at negligible cost.
+
+Tue Feb 4 16:30:59 1997 Ian Lance Taylor <ian@cygnus.com>
+
+ * mvalloc.c (cache_pagesize): Rename from pagesize, so that if we
+ are building mm.o, it does not conflict with the variable of the
+ same name in mmap-sup.c.
+
+Sat Dec 28 12:48:32 1996 Fred Fish <fnf@cygnus.com>
+
+ * Makefile.in (mm.o): New target that combines all the functions
+ into a single object module. This avoids client programs picking
+ up part of the allocation routines from mmalloc and part from libc,
+ which can lead to undefined behavior.
+ (CFILES): Add mm.c
+ (TARGETOBJS): Define to be either the individual objects or the
+ single combined object.
+ (TARGETLIB): Create the archive using TARGETOBJS.
+ * mm.c: New file that simply #includes the other source C files.
+
+Thu Oct 3 15:45:23 1996 Jason Molenda (crash@godzilla.cygnus.co.jp)
+
+ * Makefile.in (maintainer-clean): Depend on distclean, remove
+ duplication.
+
+Tue Sep 10 17:52:06 1996 Fred Fish <fnf@cygnus.com>
+
+ * mmcheck.c (checkhdr): Add prototype.
+ (mfree_check): Ditto.
+ (mmalloc_check): Ditto.
+ (mrealloc_check): Ditto.
+ * mmtrace.c (tr_break): Ditto.
+ (tr_freehook): Ditto.
+ (tr_mallochook): Ditto.
+ (tr_reallochook): Ditto.
+ * sbrk-sup.c (sbrk_morecore): Ditto.
+
+Wed Sep 4 18:02:45 1996 Stu Grossman (grossman@critters.cygnus.com)
+
+ * configure configure.in: Don't default CC to cc. It causes problems
+ when starting a compile in the mmalloc directory.
+
+Wed Jul 24 00:53:34 1996 Fred Fish <fnf@cygnus.com>
+
+ * mmalloc.h (mmalloc_findbase): Add prototype.
+
+Fri Jul 12 18:35:34 1996 Fred Fish <fnf@cygnus.com>
+
+ * mmap-sup.c (mmalloc_findbase): Change to not require /dev/zero
+ if MMAP_ANONYMOUS is available.
+
+Wed Jul 10 23:53:42 1996 Fred Fish <fnf@cygnus.com>
+
+ * detach.c (mmalloc_detach): Fix bug in computation of negative
+ brk value.
+ * mmcheck.c (mmcheckf): Renamed from mmcheck and new FORCE argument
+ added. Replaced hack that always allowed checking routines to be
+ installed and enforce restriction that they have to be installed
+ prior to allocating any memory on the used heap or the FORCE argument
+ has to be non-NULL.
+ (mmcheck): New function that calls mmcheckf with FORCE set to zero,
+ for backwards compatibility.
+ * mmalloc.c (malloc): Store result in local variable before
+ returning it. Makes debugging much easier at negligible cost.
+ * mmalloc.h (mmcheckf): Declare.
+ * attach.c (reuse): Call mmcheckf rather than mmcheck.
+ * mmap-sup.c (__mmalloc_mmap_morecore): Improve to allow mmap
+ to select a base mapping address if none is otherwise given.
+ (mmalloc_findbase): New function that user can call to find
+ an available mapping address of a given size.
+
+Tue Jun 25 22:54:06 1996 Jason Molenda (crash@godzilla.cygnus.co.jp)
+
+ * Makefile.in (bindir, libdir, datadir, mandir, infodir, includedir):
+ Use autoconf-set values.
+ (docdir): Removed.
+ * configure.in (AC_PREREQ): autoconf 2.5 or higher.
+ * configure: Rebuilt.
+
+Tue May 28 13:51:22 1996 Fred Fish <fnf@cygnus.com>
+
+ From: Thomas A Peterson <tap@src.honeywell.com>
+ * Makefile.in (install-info): Apply patch to install
+ mmalloc.info from srcdir if not found in build dir.
+
+Sun Apr 7 20:55:30 1996 Fred Fish <fnf@rtl.cygnus.com>
+
+ From: Miles Bader <miles@gnu.ai.mit.edu>
+ * configure.in: Use AC_CHECK_TOOL to find AR & RANLIB.
+ * configure: Regenerate with autoconf.
+ * Makefile.in: Use AR set by configure substitution.
+
+Fri Mar 29 09:57:36 1996 Fred Fish <fnf@cygnus.com>
+
+ * mmalloc.h (mmtrace): Add prototype.
+
+Sat Feb 3 12:41:00 1996 Fred Fish <fnf@cygnus.com>
+
+ From H.J. Lu (hjl@gnu.ai.mit.edu):
+ * mvalloc.c (valloc): new.
+ * mmemalign.c: Allocate (SIZE + ALIGNMENT - 1) and then trim
+ if possible.
+ (memalign): don't put the node on the _aligned_blocks list more
+ than once.
+
+Mon Nov 20 12:04:32 1995 Fred Fish <fnf@cygnus.com>
+
+ * Makefile.in (OFILES): Make objects depend upon Makefile,
+ since Makefile sets DEFS which can definitely affect how
+ objects are to be compiled.
+
+Mon Nov 6 14:12:13 1995 Jason Molenda (crash@phydeaux.cygnus.com)
+
+ * configure.in (AC_CHECK_HEADERS): add limits.h.
+ (AC_HEADER_STDC): remove.
+
+ * mmalloc.h: document necessity of defining size_t before
+ including mmalloc.h.
+
+ * mmprivate.h: add check for limits.h, remove definition of
+ NULL and size_t.
+
+Sun Nov 5 00:27:36 1995 Jason Molenda (crash@phydeaux.cygnus.com)
+
+ * configure.in: AC_CHECK_HEADERS, not AC_CHECK_HEADER.
+
+Sun Nov 5 00:14:13 1995 Jason Molenda (crash@phydeaux.cygnus.com)
+
+ * configure.in: add check for stddef.h
+ * mmalloc.h: include stddef.h if HAVE_STDDEF_H is defined.
+
+Sat Nov 4 19:10:13 1995 Jason Molenda (crash@phydeaux.cygnus.com)
+
+ * configure.in: add AC_HEADER_STDC check.
+
+ * mmalloc.h: check if STDC_HEADERS instead of __STDC__.
+
+ * mmprivate.h: check if STDC_HEADERS instead of __STDC__.
+
+Tue Oct 24 13:17:44 1995 Stan Shebs <shebs@andros.cygnus.com>
+
+ * mmprivate.h: Remove declarations (PTR, etc) that are already
+ provided by ansidecl.h, include mmalloc.h earlier in file.
+
+Tue Oct 10 11:04:47 1995 Fred Fish <fnf@cygnus.com>
+
+ * Makefile.in (BISON): Remove macro.
+
+Wed Sep 20 12:51:13 1995 Ian Lance Taylor <ian@cygnus.com>
+
+ * Makefile.in (maintainer-clean): New target, synonym for
+ realclean. Add GNU standard maintainer-clean echos.
+
+Thu Aug 3 10:45:37 1995 Fred Fish <fnf@cygnus.com>
+
+ * Update all FSF addresses except those in COPYING* files
+ and shar archive of original FSF files.
+
+Mon Jun 12 12:11:57 1995 J.T. Conklin <jtc@rtl.cygnus.com>
+
+ * Makefile.in (distclean, realclean): Remove config.cache and
+ config.log.
+
+Wed May 17 17:47:44 1995 J.T. Conklin <jtc@rtl.cygnus.com>
+
+ * Makefile.in (Makefile): Added config.status to dependency list.
+ (config.status): New target.
+
+Fri May 5 15:17:53 1995 J.T. Conklin <jtc@rtl.cygnus.com>
+
+ * mmap-sup.c: Removed munmap prototype. Some systems have a
+ slightly different prototype.
+
+Wed May 3 17:18:13 1995 J.T. Conklin <jtc@rtl.cygnus.com>
+
+ * Makefile.in, configure.in: Converted to use autoconf.
+ * configure: New file, generated with autoconf 2.3.
+ * config/{mh-go32, mh-irix, mh-ncr3000, mh-sunos4,
+ mh-sysv4}: Removed.
+
+Thu Nov 3 23:55:21 1994 Ian Lance Taylor (ian@tweedledumb.cygnus.com)
+
+ * Makefile.in (install-info): Name destination file correctly,
+ rather than using undefined shell variable.
+
+Fri Oct 28 16:46:58 1994 Stan Shebs (shebs@andros.cygnus.com)
+
+ * mmprivate.h: New file, was mmalloc.h.
+ (mmalloc.h): Include.
+ * mmalloc.h: Remove all but declarations of mmalloc functions.
+ (ansidecl.h): Include.
+ * attach.c, et al: Include mmprivate.h instead of mmalloc.h.
+
+Wed Aug 24 12:55:33 1994 Ian Lance Taylor (ian@sanguine.cygnus.com)
+
+ * configure.in: Change i[34]86 to i[345]86.
+
+Mon Aug 22 11:36:40 1994 Stan Shebs (shebs@andros.cygnus.com)
+
+ * Makefile.in (distclean): Separate from realclean.
+ (realclean): Remove mmalloc.info.
+
+Fri May 6 13:04:25 1994 Steve Chamberlain (sac@cygnus.com)
+
+ * config/go32.mh: New file
+ * configure.in (host==go32): Use new fragment.
+
+Tue Feb 8 00:32:28 1994 Peter Schauer (pes@regent.e-technik.tu-muenchen.de)
+
+ * mmtrace.c (tr_freehook, tr_mallochook, tr_reallochook):
+ Cast addresses put out via fprintf to unsigned long and use %lx.
+
+Tue Nov 16 20:33:17 1993 Jim Kingdon (kingdon@deneb.cygnus.com)
+
+ * COPYING.LIB: New file (standard version 2 LGPL, as already cited
+ by the source files).
+
+Fri Nov 5 11:47:33 1993 Jim Kingdon (kingdon@lioth.cygnus.com)
+
+ * Makefile.in (info dvi install-info): Actually make the manual.
+
+Mon Nov 1 14:20:25 1993 Jim Kingdon (kingdon@lioth.cygnus.com)
+
+ * mmalloc.texi: Fix typo ("for for" -> "for").
+
+Fri Jul 16 15:27:08 1993 Jim Kingdon (kingdon@rtl.cygnus.com)
+
+ * test1.c: New file which tests for bug fixed below.
+ * Makefile.in (check): Put in commands to run it (but commented out
+ because it won't work for Canadian cross).
+
+ * mmalloc.c (mmalloc): When extending a free block at the end of the
+ heap, check whether which block is at the end changed.
+
+ * Makefile.in (TAGS): make work when srcdir != objdir.
+
+Thu Jul 15 07:56:47 1993 Jim Kingdon (kingdon@lioth.cygnus.com)
+
+ * attach.c, detach.c: Include <sys/types.h> before <fcntl.h>.
+
+Wed Jun 30 11:00:53 1993 Jim Kingdon (kingdon@lioth.cygnus.com)
+
+ * Makefile.in: Add mostlyclean and realclean targets.
+
+Wed Mar 24 01:58:12 1993 david d `zoo' zuhn (zoo at poseidon.cygnus.com)
+
+ * Makefile.in: add dvi and installcheck targets
+
+Fri Mar 12 18:35:43 1993 david d `zoo' zuhn (zoo at cirdan.cygnus.com)
+
+ * configure.in: recognize *-*-solaris2* instead of *-*-solaris* (a
+ number of people want to call SunOS 4.1.2 "solaris1.0" and get it right)
+
+Mon Feb 22 18:08:53 1993 John Gilmore (gnu@cygnus.com)
+
+ * Makefile.in (distclean): Add.
+
+Tue Feb 16 08:09:15 1993 Fred Fish (fnf@cygnus.com)
+
+ * Makefile.in, attach.c, detach.c, keys.c, mmap-sup.c, mmtrace.c,
+ sbrk-sup.c: Use GNU Library General Public License, like other
+ files.
+
+Wed Nov 18 19:18:59 1992 John Gilmore (gnu@cygnus.com)
+
+ * configure.in: Regularize list of host configs.
+
+Fri Oct 30 00:59:46 1992 John Gilmore (gnu@cygnus.com)
+
+ * mmalloc.texi: Add missing doubled @. Bugfix by Paul Eggert.
+
+Fri Oct 23 01:50:52 1992 Stu Grossman (grossman at cygnus.com)
+
+ * configure.in: Handle solaris same as sysv4.
+
+Thu Oct 1 23:34:20 1992 david d `zoo' zuhn (zoo at cirdan.cygnus.com)
+
+ * configure.in: use cpu-vendor-os triple instead of nested cases
+
+Sun Aug 23 11:09:46 1992 Fred Fish (fnf@cygnus.com)
+
+ * sbrk-sup.c (__mmalloc_brk_init): Ensure base of sbrk'd region
+ is aligned. Bug reported by Andrew Heybey (ath@lcs.mit.edu).
+
+Wed Aug 19 14:49:23 1992 Ian Lance Taylor (ian@cygnus.com)
+
+ * Makefile.in: always create installation directories.
+
+Mon Jul 20 21:15:44 1992 Fred Fish (fnf@cygnus.com)
+
+ * mrealloc.c: Minor code format style changes for consistency.
+
+Fri Jul 3 20:25:30 1992 Fred Fish (fnf@cygnus.com)
+
+ * attach.c, detach.c, mcalloc.c, mmalloc.c, mmtrace.c, mrealloc.c,
+ sbrk-sup.c: Remove "(void)" casts from function calls where the
+ return value is ignored, in accordance with GNU coding standards.
+
+Tue Jun 30 16:44:41 1992 Fred Fish (fnf@cygnus.com)
+
+ * mmalloc.h (struct mdesc): Add FIXME comments to point out the
+ need to save some data on a per-process basis for mapped regions
+ that are shared.
+ * attach.c (reuse): Update the morecore field for reused mapped
+ regions to be correct for the current process.
+
+Mon Jun 29 10:45:25 1992 Fred Fish (fnf at cygnus.com)
+
+ * mmtrace.c: Lint.
+
+Mon Jun 15 12:20:16 1992 Fred Fish (fnf@cygnus.com)
+
+ * mmalloc.h (struct mdesc): Change member "errno" to
+ "saved_errno" to avoid possible conflict with ANSI C environments,
+ where it is allowed to be a macro.
+ * config/mh-ncr3000 (INSTALL): Don't use /usr/ucb/install,
+ it is broken on ncr 3000's.
+ * config/mh-ncr3000 (RANLIB): Use RANLIB=true.
+
+Fri Jun 12 21:34:21 1992 John Gilmore (gnu at cygnus.com)
+
+ * mmap-sup.c: Avoid ANSI C "empty translation unit" idiocy.
+
+Tue Jun 9 17:29:04 1992 Fred Fish (fnf@cygnus.com)
+
+ * config/{mh-ncr3000, mh-sysv4}: Add definition for INSTALL using
+ /usr/ucb/install.
+
+Thu Apr 30 22:36:31 1992 Fred Fish (fnf@cygnus.com)
+
+ * sbrk-sup.c (sbrk_morecore): Fix sbrk() error return test.
+
+Mon Apr 20 21:03:30 1992 K. Richard Pixley (rich@cygnus.com)
+
+ * Makefile.in: rework CFLAGS so that they can be passed from the
+ command line. remove MINUS_G. Default CFLAGS to -g.
+
+Thu Apr 16 20:00:21 1992 Fred Fish (fnf@cygnus.com)
+
+ * TODO: New file.
+ * attach.c, mcalloc.c, mfree.c, mmalloc.c, mmalloc.h, mmap-sup.c,
+ mmcheck.c, mtrace.c, mrealloc.c, mvalloc.c, sbrk-sup.c: Lint.
+
+Fri Apr 10 22:59:17 1992 Fred Fish (fnf@cygnus.com)
+
+ * configure.in: Recognize new ncr3000 config.
+ * config/mh-ncr3000: New config file.
+ * Makefile.in (MINUS_G): Add macro and default to -g.
+
+Wed Apr 8 09:34:53 1992 Fred Fish (fnf@cygnus.com)
+
+ * mmalloc.c: Minor fix to comment.
+ * mmalloc.texi: Update to match actual implementation
+ * mmalloc.h (morecore): Change prototype's 2nd arg to int.
+
+Tue Apr 7 22:16:09 1992 Fred Fish (fnf@cygnus.com)
+
+ * mmalloc.h (size_t, CHAR_BIT): Only redefine if not already
+ defined.
+
+Mon Apr 6 20:49:33 1992 Fred Fish (fnf@cygnus.com)
+
+ * mmalloc.h: Remove include of <stdlib.h>. This also gets rid
+ of the ugly kludge installed on 1-Apr-92.
+
+Mon Apr 6 16:33:37 1992 Stu Grossman (grossman at cygnus.com)
+
+ * detach.c (mmalloc_detach): Arg should be PTR, not void *.
+ Fixes complaints from non __STDC__ systems.
+
+Wed Apr 1 11:47:02 1992 Fred Fish (fnf@cygnus.com)
+
+ * mcalloc.c, mfree.c, mmalloc.c, mrealloc.c: Minor comment
+ change.
+ * mmalloc.h: Add ugly kludge to band-aid over problems with
+ bogus vendor <stdlib.h> files.
+
+Sun Mar 29 12:41:31 1992 John Gilmore (gnu at cygnus.com)
+
+ * attach.c, mmalloc.c, mmcheck.c: Lint.
+
+Thu Mar 26 17:06:04 1992 Fred Fish (fnf@cygnus.com)
+
+ * attach.c (reuse): Explicitly discard return value of mmcheck.
+ * mmcheck.c (mmcheck): Document requirements for installing
+ corruption checking hooks and set up to enforce restrictions.
+
+Tue Mar 24 23:41:10 1992 K. Richard Pixley (rich@cygnus.com)
+
+ * config/mh-irix4: new file.
+
+ * Makefile.in: added standard targets, fixed install directories.
+
+Sat Mar 14 17:34:59 1992 Fred Fish (fnf@cygnus.com)
+
+ * Initial release, incorporated into gdb.
+
+
diff --git a/mmalloc/Makefile.in b/mmalloc/Makefile.in
new file mode 100644
index 00000000000..91e91d500b0
--- /dev/null
+++ b/mmalloc/Makefile.in
@@ -0,0 +1,208 @@
+# Copyright (C) 1992 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Library General Public License as
+# published by the Free Software Foundation; either version 2 of the
+# License, or (at your option) any later version.
+
+# The GNU C Library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Library General Public License for more details.
+
+# You should have received a copy of the GNU Library General Public
+# License along with the GNU C Library; see the file COPYING.LIB. If
+# not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+#
+# Makefile for mmalloc directory
+#
+
+# Directory containing source files. Don't clean up the spacing,
+# this exact string is matched for by the "configure" script.
+
+VPATH = @srcdir@
+srcdir = @srcdir@
+
+prefix = @prefix@
+exec_prefix = @exec_prefix@
+
+bindir = @bindir@
+libdir = @libdir@
+
+datadir = @datadir@
+mandir = @mandir@
+man1dir = $(mandir)/man1
+man2dir = $(mandir)/man2
+man3dir = $(mandir)/man3
+man4dir = $(mandir)/man4
+man5dir = $(mandir)/man5
+man6dir = $(mandir)/man6
+man7dir = $(mandir)/man7
+man8dir = $(mandir)/man8
+man9dir = $(mandir)/man9
+infodir = @infodir@
+includedir = @includedir@
+
+SHELL = @SHELL@
+
+INSTALL = @INSTALL@
+INSTALL_PROGRAM=@INSTALL_PROGRAM@
+INSTALL_DATA = @INSTALL_DATA@
+
+AR = @AR@
+AR_FLAGS = qv
+CFLAGS = -g
+MAKEINFO = makeinfo
+RANLIB = @RANLIB@
+RM = rm
+
+# where to find makeinfo
+MAKEINFO=makeinfo
+
+SET_TEXINPUTS = TEXINPUTS=${TEXIDIR}:.:$(srcdir):$(READLINE_DIR):$$TEXINPUTS
+
+# The TeX formatter
+TEX = tex
+
+TARGETLIB = libmmalloc.a
+
+CFILES = mcalloc.c mfree.c mmalloc.c mmcheck.c mmemalign.c mmstats.c \
+ mmtrace.c mrealloc.c mvalloc.c mmap-sup.c attach.c detach.c \
+ keys.c sbrk-sup.c mm.c
+
+HFILES = mmalloc.h
+
+OFILES = mcalloc.o mfree.o mmalloc.o mmcheck.o mmemalign.o mmstats.o \
+ mmtrace.o mrealloc.o mvalloc.o mmap-sup.o attach.o detach.o \
+ keys.o sbrk-sup.o
+
+DEFS = @DEFS@
+
+# The current default is to build a single object module with all the mmalloc
+# functions. To build a more traditional library, flip this macro definition.
+#TARGETOBJS = $(OFILES)
+TARGETOBJS = mm.o
+
+.c.o:
+ $(CC) -c $(CFLAGS) $(DEFS) -I. -I$(srcdir)/../include $<
+
+# Do we want/need any config overrides?
+#
+
+STAGESTUFF = $(TARGETLIB) *.o
+
+all: $(TARGETLIB)
+
+info: mmalloc.info
+dvi: mmalloc.dvi
+clean-info:
+installcheck:
+
+mmalloc.info: mmalloc.texi
+ $(MAKEINFO) -I $(srcdir) -o ./mmalloc.info mmalloc.texi
+
+# This file doesn't need texindex currently.
+mmalloc.dvi: mmalloc.texi
+ $(SET_TEXINPUTS) $(TEX) mmalloc.texi
+ rm -f mmalloc.?? mmalloc.??s mmalloc.log mmalloc.aux mmalloc.toc
+
+install-info: info
+ if test ! -f mmalloc.info ; then cd $(srcdir); fi; \
+ $(INSTALL_DATA) mmalloc.info $(infodir)/mmalloc.info
+
+check: test1.c
+# $(CC) -g $(srcdir)/test1.c libmmalloc.a
+# This loses for Canadian cross (building mmalloc with a cross-compiler).
+# There is probably some dejagnu-ish solution (such as what we are doing
+# for gdb, perhaps).
+# ./a.out
+
+install: all
+ $(INSTALL_DATA) $(TARGETLIB) $(libdir)/$(TARGETLIB).n
+ $(RANLIB) $(libdir)/$(TARGETLIB).n
+ mv -f $(libdir)/$(TARGETLIB).n $(libdir)/$(TARGETLIB)
+
+$(TARGETLIB): $(TARGETOBJS)
+ $(RM) -rf $@
+ $(AR) $(AR_FLAGS) $@ $(TARGETOBJS)
+ $(RANLIB) $@
+
+$(OFILES) : $(HFILES) Makefile
+
+mm.o: $(HFILES) $(CFILES)
+ $(CC) -c $(CFLAGS) $(DEFS) -I. -I$(srcdir)/../include $(srcdir)/mm.c
+
+.always.:
+# Do nothing.
+
+.PHONEY: all etags tags ls clean stage1 stage2 .always.
+
+stage1: force
+ -mkdir stage1
+ -mv -f $(STAGESTUFF) stage1
+
+stage2: force
+ -mkdir stage2
+ -mv -f $(STAGESTUFF) stage2
+
+stage3: force
+ -mkdir stage3
+ -mv -f $(STAGESTUFF) stage3
+
+stage4: force
+ -mkdir stage4
+ -mv -f $(STAGESTUFF) stage4
+
+against=stage2
+
+comparison: force
+ for i in *.o ; do cmp $$i $(against)/$$i || exit 1 ; done
+
+de-stage1: force
+ -(cd stage1 ; mv -f * ..)
+ -rmdir stage1
+
+de-stage2: force
+ -(cd stage2 ; mv -f * ..)
+ -rmdir stage2
+
+de-stage3: force
+ -(cd stage3 ; mv -f * ..)
+ -rmdir stage3
+
+de-stage4: force
+ -(cd stage4 ; mv -f * ..)
+ -rmdir stage4
+
+etags tags: TAGS
+
+TAGS: $(CFILES)
+ etags `for i in $(HFILES) $(CFILES); do echo $(srcdir)/$$i ; done`
+
+ls:
+ @echo Makefile $(HFILES) $(CFILES)
+
+# Need to deal with profiled libraries, too.
+
+mostlyclean clean:
+ rm -f *.a *.o core errs *~ \#* TAGS *.E a.out errors
+
+distclean: clean
+ rm -f config.cache config.log config.status
+ rm -f Makefile depend
+
+maintainer-clean realclean: distclean clean
+ @echo "This command is intended for maintainers to use;"
+ @echo "it deletes files that may require special tools to rebuild."
+ rm -f mmalloc.info
+
+force:
+
+Makefile: Makefile.in config.status
+ $(SHELL) config.status
+
+config.status: configure
+ $(SHELL) config.status --recheck
diff --git a/mmalloc/TODO b/mmalloc/TODO
new file mode 100644
index 00000000000..94120439a7c
--- /dev/null
+++ b/mmalloc/TODO
@@ -0,0 +1,17 @@
+Things that still need attention:
+
+ * Make implementation changes necessary to allow multiple processes
+ to use the mmalloc managed region simultaneously. This requires,
+ at the minimum, some sort of cooperative locking that ensures that
+ only one process at a time is changing any of the mmalloc managed
+ data structures (its ok for the mmalloc managed data regions to be
+ changed at any time since we don't care about their contents).
+
+ * In order to support multiple processes using the mmalloc managed
+ region, the malloc descriptor needs to be broken into two parts,
+ one part which is specific to the given process and is maintained
+ separately on a per process basis, and another part which is common
+ to all processes. As an example, the file descriptor is specific
+ to a given process, as are the morecore and abortfunc pointers.
+ However magic[], the version number, the flags field, etc are
+ common to all processes.
diff --git a/mmalloc/attach.c b/mmalloc/attach.c
new file mode 100644
index 00000000000..70cfa6eb997
--- /dev/null
+++ b/mmalloc/attach.c
@@ -0,0 +1,218 @@
+/* Initialization for access to a mmap'd malloc managed region.
+ Copyright 1992 Free Software Foundation, Inc.
+
+ Contributed by Fred Fish at Cygnus Support. fnf@cygnus.com
+
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+#include <sys/types.h>
+#include <fcntl.h> /* After sys/types.h, at least for dpx/2. */
+#include <sys/stat.h>
+#include <string.h>
+#include "mmprivate.h"
+
+#ifndef SEEK_SET
+#define SEEK_SET 0
+#endif
+
+
+#if defined(HAVE_MMAP)
+
+/* Forward declarations/prototypes for local functions */
+
+static struct mdesc *reuse PARAMS ((int));
+
+/* Initialize access to a mmalloc managed region.
+
+ If FD is a valid file descriptor for an open file then data for the
+ mmalloc managed region is mapped to that file, otherwise "/dev/zero"
+ is used and the data will not exist in any filesystem object.
+
+ If the open file corresponding to FD is from a previous use of
+ mmalloc and passes some basic sanity checks to ensure that it is
+ compatible with the current mmalloc package, then it's data is
+ mapped in and is immediately accessible at the same addresses in
+ the current process as the process that created the file.
+
+ If BASEADDR is not NULL, the mapping is established starting at the
+ specified address in the process address space. If BASEADDR is NULL,
+ the mmalloc package chooses a suitable address at which to start the
+ mapped region, which will be the value of the previous mapping if
+ opening an existing file which was previously built by mmalloc, or
+ for new files will be a value chosen by mmap.
+
+ Specifying BASEADDR provides more control over where the regions
+ start and how big they can be before bumping into existing mapped
+ regions or future mapped regions.
+
+ On success, returns a "malloc descriptor" which is used in subsequent
+ calls to other mmalloc package functions. It is explicitly "void *"
+ ("char *" for systems that don't fully support void) so that users
+ of the package don't have to worry about the actual implementation
+ details.
+
+ On failure returns NULL. */
+
+PTR
+mmalloc_attach (fd, baseaddr)
+ int fd;
+ PTR baseaddr;
+{
+ struct mdesc mtemp;
+ struct mdesc *mdp;
+ PTR mbase;
+ struct stat sbuf;
+
+ /* First check to see if FD is a valid file descriptor, and if so, see
+ if the file has any current contents (size > 0). If it does, then
+ attempt to reuse the file. If we can't reuse the file, either
+ because it isn't a valid mmalloc produced file, was produced by an
+ obsolete version, or any other reason, then we fail to attach to
+ this file. */
+
+ if (fd >= 0)
+ {
+ if (fstat (fd, &sbuf) < 0)
+ {
+ return (NULL);
+ }
+ else if (sbuf.st_size > 0)
+ {
+ return ((PTR) reuse (fd));
+ }
+ }
+
+ /* We start off with the malloc descriptor allocated on the stack, until
+ we build it up enough to call _mmalloc_mmap_morecore() to allocate the
+ first page of the region and copy it there. Ensure that it is zero'd and
+ then initialize the fields that we know values for. */
+
+ mdp = &mtemp;
+ memset ((char *) mdp, 0, sizeof (mtemp));
+ strncpy (mdp -> magic, MMALLOC_MAGIC, MMALLOC_MAGIC_SIZE);
+ mdp -> headersize = sizeof (mtemp);
+ mdp -> version = MMALLOC_VERSION;
+ mdp -> morecore = __mmalloc_mmap_morecore;
+ mdp -> fd = fd;
+ mdp -> base = mdp -> breakval = mdp -> top = baseaddr;
+
+ /* If we have not been passed a valid open file descriptor for the file
+ to map to, then open /dev/zero and use that to map to. */
+
+ if (mdp -> fd < 0)
+ {
+ if ((mdp -> fd = open ("/dev/zero", O_RDWR)) < 0)
+ {
+ return (NULL);
+ }
+ else
+ {
+ mdp -> flags |= MMALLOC_DEVZERO;
+ }
+ }
+
+ /* Now try to map in the first page, copy the malloc descriptor structure
+ there, and arrange to return a pointer to this new copy. If the mapping
+ fails, then close the file descriptor if it was opened by us, and arrange
+ to return a NULL. */
+
+ if ((mbase = mdp -> morecore (mdp, sizeof (mtemp))) != NULL)
+ {
+ memcpy (mbase, mdp, sizeof (mtemp));
+ mdp = (struct mdesc *) mbase;
+ }
+ else
+ {
+ if (mdp -> flags & MMALLOC_DEVZERO)
+ {
+ close (mdp -> fd);
+ }
+ mdp = NULL;
+ }
+
+ return ((PTR) mdp);
+}
+
+/* Given an valid file descriptor on an open file, test to see if that file
+ is a valid mmalloc produced file, and if so, attempt to remap it into the
+ current process at the same address to which it was previously mapped.
+
+ Note that we have to update the file descriptor number in the malloc-
+ descriptor read from the file to match the current valid one, before
+ trying to map the file in, and again after a successful mapping and
+ after we've switched over to using the mapped in malloc descriptor
+ rather than the temporary one on the stack.
+
+ Once we've switched over to using the mapped in malloc descriptor, we
+ have to update the pointer to the morecore function, since it almost
+ certainly will be at a different address if the process reusing the
+ mapped region is from a different executable.
+
+ Also note that if the heap being remapped previously used the mmcheckf()
+ routines, we need to update the hooks since their target functions
+ will have certainly moved if the executable has changed in any way.
+ We do this by calling mmcheckf() internally.
+
+ Returns a pointer to the malloc descriptor if successful, or NULL if
+ unsuccessful for some reason. */
+
+static struct mdesc *
+reuse (fd)
+ int fd;
+{
+ struct mdesc mtemp;
+ struct mdesc *mdp = NULL;
+
+ if ((lseek (fd, 0L, SEEK_SET) == 0) &&
+ (read (fd, (char *) &mtemp, sizeof (mtemp)) == sizeof (mtemp)) &&
+ (mtemp.headersize == sizeof (mtemp)) &&
+ (strcmp (mtemp.magic, MMALLOC_MAGIC) == 0) &&
+ (mtemp.version <= MMALLOC_VERSION))
+ {
+ mtemp.fd = fd;
+ if (__mmalloc_remap_core (&mtemp) == mtemp.base)
+ {
+ mdp = (struct mdesc *) mtemp.base;
+ mdp -> fd = fd;
+ mdp -> morecore = __mmalloc_mmap_morecore;
+ if (mdp -> mfree_hook != NULL)
+ {
+ mmcheckf ((PTR) mdp, (void (*) PARAMS ((void))) NULL, 1);
+ }
+ }
+ }
+ return (mdp);
+}
+
+#else /* !defined (HAVE_MMAP) */
+
+/* For systems without mmap, the library still supplies an entry point
+ to link to, but trying to initialize access to an mmap'd managed region
+ always fails. */
+
+/* ARGSUSED */
+PTR
+mmalloc_attach (fd, baseaddr)
+ int fd;
+ PTR baseaddr;
+{
+ return (NULL);
+}
+
+#endif /* defined (HAVE_MMAP) */
+
diff --git a/mmalloc/configure b/mmalloc/configure
new file mode 100755
index 00000000000..592618c7dbb
--- /dev/null
+++ b/mmalloc/configure
@@ -0,0 +1,1623 @@
+#! /bin/sh
+
+# Guess values for system-dependent variables and create Makefiles.
+# Generated automatically using autoconf version 2.12.2
+# Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc.
+#
+# This configure script is free software; the Free Software Foundation
+# gives unlimited permission to copy, distribute and modify it.
+
+# Defaults:
+ac_help=
+ac_default_prefix=/usr/local
+# Any additions from configure.in:
+
+# Initialize some variables set by options.
+# The variables have the same names as the options, with
+# dashes changed to underlines.
+build=NONE
+cache_file=./config.cache
+exec_prefix=NONE
+host=NONE
+no_create=
+nonopt=NONE
+no_recursion=
+prefix=NONE
+program_prefix=NONE
+program_suffix=NONE
+program_transform_name=s,x,x,
+silent=
+site=
+srcdir=
+target=NONE
+verbose=
+x_includes=NONE
+x_libraries=NONE
+bindir='${exec_prefix}/bin'
+sbindir='${exec_prefix}/sbin'
+libexecdir='${exec_prefix}/libexec'
+datadir='${prefix}/share'
+sysconfdir='${prefix}/etc'
+sharedstatedir='${prefix}/com'
+localstatedir='${prefix}/var'
+libdir='${exec_prefix}/lib'
+includedir='${prefix}/include'
+oldincludedir='/usr/include'
+infodir='${prefix}/info'
+mandir='${prefix}/man'
+
+# Initialize some other variables.
+subdirs=
+MFLAGS= MAKEFLAGS=
+SHELL=${CONFIG_SHELL-/bin/sh}
+# Maximum number of lines to put in a shell here document.
+ac_max_here_lines=12
+
+ac_prev=
+for ac_option
+do
+
+ # If the previous option needs an argument, assign it.
+ if test -n "$ac_prev"; then
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+ ac_prev=
+ continue
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+
+ case "$ac_option" in
+ -*=*) ac_optarg=`echo "$ac_option" | sed 's/[-_a-zA-Z0-9]*=//'` ;;
+ *) ac_optarg= ;;
+ esac
+
+ # Accept the important Cygnus configure options, so we can diagnose typos.
+
+ case "$ac_option" in
+
+ -bindir | --bindir | --bindi | --bind | --bin | --bi)
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+ -bindir=* | --bindir=* | --bindi=* | --bind=* | --bin=* | --bi=*)
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+
+ -build | --build | --buil | --bui | --bu)
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+
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+ -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
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+
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+
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+
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+ case "$ac_option" in
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+ *) ac_optarg=yes ;;
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+ -exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi \
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+ ac_prev=exec_prefix ;;
+ -exec-prefix=* | --exec_prefix=* | --exec-prefix=* | --exec-prefi=* \
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+ exec_prefix="$ac_optarg" ;;
+
+ -gas | --gas | --ga | --g)
+ # Obsolete; use --with-gas.
+ with_gas=yes ;;
+
+ -help | --help | --hel | --he)
+ # Omit some internal or obsolete options to make the list less imposing.
+ # This message is too long to be a string in the A/UX 3.1 sh.
+ cat << EOF
+Usage: configure [options] [host]
+Options: [defaults in brackets after descriptions]
+Configuration:
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+ --help print this message
+ --no-create do not create output files
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+ --version print the version of autoconf that created configure
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+ --exec-prefix=EPREFIX install architecture-dependent files in EPREFIX
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+ --sysconfdir=DIR read-only single-machine data in DIR [PREFIX/etc]
+ --sharedstatedir=DIR modifiable architecture-independent data in DIR
+ [PREFIX/com]
+ --localstatedir=DIR modifiable single-machine data in DIR [PREFIX/var]
+ --libdir=DIR object code libraries in DIR [EPREFIX/lib]
+ --includedir=DIR C header files in DIR [PREFIX/include]
+ --oldincludedir=DIR C header files for non-gcc in DIR [/usr/include]
+ --infodir=DIR info documentation in DIR [PREFIX/info]
+ --mandir=DIR man documentation in DIR [PREFIX/man]
+ --srcdir=DIR find the sources in DIR [configure dir or ..]
+ --program-prefix=PREFIX prepend PREFIX to installed program names
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+ run sed PROGRAM on installed program names
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+ cat << EOF
+Host type:
+ --build=BUILD configure for building on BUILD [BUILD=HOST]
+ --host=HOST configure for HOST [guessed]
+ --target=TARGET configure for TARGET [TARGET=HOST]
+Features and packages:
+ --disable-FEATURE do not include FEATURE (same as --enable-FEATURE=no)
+ --enable-FEATURE[=ARG] include FEATURE [ARG=yes]
+ --with-PACKAGE[=ARG] use PACKAGE [ARG=yes]
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+ --x-includes=DIR X include files are in DIR
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+EOF
+ if test -n "$ac_help"; then
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+ exit 0 ;;
+
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+ ac_prev=host ;;
+ -host=* | --host=* | --hos=* | --ho=*)
+ host="$ac_optarg" ;;
+
+ -includedir | --includedir | --includedi | --included | --include \
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+ ac_prev=includedir ;;
+ -includedir=* | --includedir=* | --includedi=* | --included=* | --include=* \
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+ includedir="$ac_optarg" ;;
+
+ -infodir | --infodir | --infodi | --infod | --info | --inf)
+ ac_prev=infodir ;;
+ -infodir=* | --infodir=* | --infodi=* | --infod=* | --info=* | --inf=*)
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+
+ -libdir | --libdir | --libdi | --libd)
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+ libexecdir="$ac_optarg" ;;
+
+ -localstatedir | --localstatedir | --localstatedi | --localstated \
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+ -target | --target | --targe | --targ | --tar | --ta | --t)
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+
+echo "\
+This file contains any messages produced by compilers while
+running configure, to aid debugging if configure makes a mistake.
+" 1>&5
+
+# Strip out --no-create and --no-recursion so they do not pile up.
+# Also quote any args containing shell metacharacters.
+ac_configure_args=
+for ac_arg
+do
+ case "$ac_arg" in
+ -no-create | --no-create | --no-creat | --no-crea | --no-cre \
+ | --no-cr | --no-c) ;;
+ -no-recursion | --no-recursion | --no-recursio | --no-recursi \
+ | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r) ;;
+ *" "*|*" "*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?]*)
+ ac_configure_args="$ac_configure_args '$ac_arg'" ;;
+ *) ac_configure_args="$ac_configure_args $ac_arg" ;;
+ esac
+done
+
+# NLS nuisances.
+# Only set these to C if already set. These must not be set unconditionally
+# because not all systems understand e.g. LANG=C (notably SCO).
+# Fixing LC_MESSAGES prevents Solaris sh from translating var values in `set'!
+# Non-C LC_CTYPE values break the ctype check.
+if test "${LANG+set}" = set; then LANG=C; export LANG; fi
+if test "${LC_ALL+set}" = set; then LC_ALL=C; export LC_ALL; fi
+if test "${LC_MESSAGES+set}" = set; then LC_MESSAGES=C; export LC_MESSAGES; fi
+if test "${LC_CTYPE+set}" = set; then LC_CTYPE=C; export LC_CTYPE; fi
+
+# confdefs.h avoids OS command line length limits that DEFS can exceed.
+rm -rf conftest* confdefs.h
+# AIX cpp loses on an empty file, so make sure it contains at least a newline.
+echo > confdefs.h
+
+# A filename unique to this package, relative to the directory that
+# configure is in, which we can look for to find out if srcdir is correct.
+ac_unique_file=mmalloc.c
+
+# Find the source files, if location was not specified.
+if test -z "$srcdir"; then
+ ac_srcdir_defaulted=yes
+ # Try the directory containing this script, then its parent.
+ ac_prog=$0
+ ac_confdir=`echo $ac_prog|sed 's%/[^/][^/]*$%%'`
+ test "x$ac_confdir" = "x$ac_prog" && ac_confdir=.
+ srcdir=$ac_confdir
+ if test ! -r $srcdir/$ac_unique_file; then
+ srcdir=..
+ fi
+else
+ ac_srcdir_defaulted=no
+fi
+if test ! -r $srcdir/$ac_unique_file; then
+ if test "$ac_srcdir_defaulted" = yes; then
+ { echo "configure: error: can not find sources in $ac_confdir or .." 1>&2; exit 1; }
+ else
+ { echo "configure: error: can not find sources in $srcdir" 1>&2; exit 1; }
+ fi
+fi
+srcdir=`echo "${srcdir}" | sed 's%\([^/]\)/*$%\1%'`
+
+# Prefer explicitly selected file to automatically selected ones.
+if test -z "$CONFIG_SITE"; then
+ if test "x$prefix" != xNONE; then
+ CONFIG_SITE="$prefix/share/config.site $prefix/etc/config.site"
+ else
+ CONFIG_SITE="$ac_default_prefix/share/config.site $ac_default_prefix/etc/config.site"
+ fi
+fi
+for ac_site_file in $CONFIG_SITE; do
+ if test -r "$ac_site_file"; then
+ echo "loading site script $ac_site_file"
+ . "$ac_site_file"
+ fi
+done
+
+if test -r "$cache_file"; then
+ echo "loading cache $cache_file"
+ . $cache_file
+else
+ echo "creating cache $cache_file"
+ > $cache_file
+fi
+
+ac_ext=c
+# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
+ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cc_cross
+
+ac_exeext=
+ac_objext=o
+if (echo "testing\c"; echo 1,2,3) | grep c >/dev/null; then
+ # Stardent Vistra SVR4 grep lacks -e, says ghazi@caip.rutgers.edu.
+ if (echo -n testing; echo 1,2,3) | sed s/-n/xn/ | grep xn >/dev/null; then
+ ac_n= ac_c='
+' ac_t=' '
+ else
+ ac_n=-n ac_c= ac_t=
+ fi
+else
+ ac_n= ac_c='\c' ac_t=
+fi
+
+
+
+# Extract the first word of "gcc", so it can be a program name with args.
+set dummy gcc; ac_word=$2
+echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
+echo "configure:529: checking for $ac_word" >&5
+if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ if test -n "$CC"; then
+ ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+ IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":"
+ for ac_dir in $PATH; do
+ test -z "$ac_dir" && ac_dir=.
+ if test -f $ac_dir/$ac_word; then
+ ac_cv_prog_CC="gcc"
+ break
+ fi
+ done
+ IFS="$ac_save_ifs"
+fi
+fi
+CC="$ac_cv_prog_CC"
+if test -n "$CC"; then
+ echo "$ac_t""$CC" 1>&6
+else
+ echo "$ac_t""no" 1>&6
+fi
+
+if test -z "$CC"; then
+ # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
+echo "configure:558: checking for $ac_word" >&5
+if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ if test -n "$CC"; then
+ ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+ IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":"
+ ac_prog_rejected=no
+ for ac_dir in $PATH; do
+ test -z "$ac_dir" && ac_dir=.
+ if test -f $ac_dir/$ac_word; then
+ if test "$ac_dir/$ac_word" = "/usr/ucb/cc"; then
+ ac_prog_rejected=yes
+ continue
+ fi
+ ac_cv_prog_CC="cc"
+ break
+ fi
+ done
+ IFS="$ac_save_ifs"
+if test $ac_prog_rejected = yes; then
+ # We found a bogon in the path, so make sure we never use it.
+ set dummy $ac_cv_prog_CC
+ shift
+ if test $# -gt 0; then
+ # We chose a different compiler from the bogus one.
+ # However, it has the same basename, so the bogon will be chosen
+ # first if we set CC to just the basename; use the full file name.
+ shift
+ set dummy "$ac_dir/$ac_word" "$@"
+ shift
+ ac_cv_prog_CC="$@"
+ fi
+fi
+fi
+fi
+CC="$ac_cv_prog_CC"
+if test -n "$CC"; then
+ echo "$ac_t""$CC" 1>&6
+else
+ echo "$ac_t""no" 1>&6
+fi
+
+ if test -z "$CC"; then
+ case "`uname -s`" in
+ *win32* | *WIN32*)
+ # Extract the first word of "cl", so it can be a program name with args.
+set dummy cl; ac_word=$2
+echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
+echo "configure:608: checking for $ac_word" >&5
+if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ if test -n "$CC"; then
+ ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+ IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":"
+ for ac_dir in $PATH; do
+ test -z "$ac_dir" && ac_dir=.
+ if test -f $ac_dir/$ac_word; then
+ ac_cv_prog_CC="cl"
+ break
+ fi
+ done
+ IFS="$ac_save_ifs"
+fi
+fi
+CC="$ac_cv_prog_CC"
+if test -n "$CC"; then
+ echo "$ac_t""$CC" 1>&6
+else
+ echo "$ac_t""no" 1>&6
+fi
+ ;;
+ esac
+ fi
+ test -z "$CC" && { echo "configure: error: no acceptable cc found in \$PATH" 1>&2; exit 1; }
+fi
+
+echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6
+echo "configure:639: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
+
+ac_ext=c
+# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
+ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cc_cross
+
+cat > conftest.$ac_ext <<EOF
+#line 649 "configure"
+#include "confdefs.h"
+main(){return(0);}
+EOF
+if { (eval echo configure:653: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ ac_cv_prog_cc_works=yes
+ # If we can't run a trivial program, we are probably using a cross compiler.
+ if (./conftest; exit) 2>/dev/null; then
+ ac_cv_prog_cc_cross=no
+ else
+ ac_cv_prog_cc_cross=yes
+ fi
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ ac_cv_prog_cc_works=no
+fi
+rm -fr conftest*
+
+echo "$ac_t""$ac_cv_prog_cc_works" 1>&6
+if test $ac_cv_prog_cc_works = no; then
+ { echo "configure: error: installation or configuration problem: C compiler cannot create executables." 1>&2; exit 1; }
+fi
+echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
+echo "configure:673: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
+echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6
+cross_compiling=$ac_cv_prog_cc_cross
+
+echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
+echo "configure:678: checking whether we are using GNU C" >&5
+if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ cat > conftest.c <<EOF
+#ifdef __GNUC__
+ yes;
+#endif
+EOF
+if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:687: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+ ac_cv_prog_gcc=yes
+else
+ ac_cv_prog_gcc=no
+fi
+fi
+
+echo "$ac_t""$ac_cv_prog_gcc" 1>&6
+
+if test $ac_cv_prog_gcc = yes; then
+ GCC=yes
+else
+ GCC=
+fi
+
+ac_test_CFLAGS="${CFLAGS+set}"
+ac_save_CFLAGS="$CFLAGS"
+CFLAGS=
+echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6
+echo "configure:706: checking whether ${CC-cc} accepts -g" >&5
+if eval "test \"`echo '$''{'ac_cv_prog_cc_g'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ echo 'void f(){}' > conftest.c
+if test -z "`${CC-cc} -g -c conftest.c 2>&1`"; then
+ ac_cv_prog_cc_g=yes
+else
+ ac_cv_prog_cc_g=no
+fi
+rm -f conftest*
+
+fi
+
+echo "$ac_t""$ac_cv_prog_cc_g" 1>&6
+if test "$ac_test_CFLAGS" = set; then
+ CFLAGS="$ac_save_CFLAGS"
+elif test $ac_cv_prog_cc_g = yes; then
+ if test "$GCC" = yes; then
+ CFLAGS="-g -O2"
+ else
+ CFLAGS="-g"
+ fi
+else
+ if test "$GCC" = yes; then
+ CFLAGS="-O2"
+ else
+ CFLAGS=
+ fi
+fi
+
+ac_aux_dir=
+for ac_dir in $srcdir $srcdir/.. $srcdir/../..; do
+ if test -f $ac_dir/install-sh; then
+ ac_aux_dir=$ac_dir
+ ac_install_sh="$ac_aux_dir/install-sh -c"
+ break
+ elif test -f $ac_dir/install.sh; then
+ ac_aux_dir=$ac_dir
+ ac_install_sh="$ac_aux_dir/install.sh -c"
+ break
+ fi
+done
+if test -z "$ac_aux_dir"; then
+ { echo "configure: error: can not find install-sh or install.sh in $srcdir $srcdir/.. $srcdir/../.." 1>&2; exit 1; }
+fi
+ac_config_guess=$ac_aux_dir/config.guess
+ac_config_sub=$ac_aux_dir/config.sub
+ac_configure=$ac_aux_dir/configure # This should be Cygnus configure.
+
+# Find a good install program. We prefer a C program (faster),
+# so one script is as good as another. But avoid the broken or
+# incompatible versions:
+# SysV /etc/install, /usr/sbin/install
+# SunOS /usr/etc/install
+# IRIX /sbin/install
+# AIX /bin/install
+# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag
+# AFS /usr/afsws/bin/install, which mishandles nonexistent args
+# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
+# ./install, which can be erroneously created by make from ./install.sh.
+echo $ac_n "checking for a BSD compatible install""... $ac_c" 1>&6
+echo "configure:768: checking for a BSD compatible install" >&5
+if test -z "$INSTALL"; then
+if eval "test \"`echo '$''{'ac_cv_path_install'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS=":"
+ for ac_dir in $PATH; do
+ # Account for people who put trailing slashes in PATH elements.
+ case "$ac_dir/" in
+ /|./|.//|/etc/*|/usr/sbin/*|/usr/etc/*|/sbin/*|/usr/afsws/bin/*|/usr/ucb/*) ;;
+ *)
+ # OSF1 and SCO ODT 3.0 have their own names for install.
+ # Don't use installbsd from OSF since it installs stuff as root
+ # by default.
+ for ac_prog in ginstall scoinst install; do
+ if test -f $ac_dir/$ac_prog; then
+ if test $ac_prog = install &&
+ grep dspmsg $ac_dir/$ac_prog >/dev/null 2>&1; then
+ # AIX install. It has an incompatible calling convention.
+ :
+ else
+ ac_cv_path_install="$ac_dir/$ac_prog -c"
+ break 2
+ fi
+ fi
+ done
+ ;;
+ esac
+ done
+ IFS="$ac_save_IFS"
+
+fi
+ if test "${ac_cv_path_install+set}" = set; then
+ INSTALL="$ac_cv_path_install"
+ else
+ # As a last resort, use the slow shell script. We don't cache a
+ # path for INSTALL within a source directory, because that will
+ # break other packages using the cache if that directory is
+ # removed, or if the path is relative.
+ INSTALL="$ac_install_sh"
+ fi
+fi
+echo "$ac_t""$INSTALL" 1>&6
+
+# Use test -z because SunOS4 sh mishandles braces in ${var-val}.
+# It thinks the first close brace ends the variable substitution.
+test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
+
+test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
+
+
+# Make sure we can run config.sub.
+if ${CONFIG_SHELL-/bin/sh} $ac_config_sub sun4 >/dev/null 2>&1; then :
+else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; }
+fi
+
+echo $ac_n "checking host system type""... $ac_c" 1>&6
+echo "configure:825: checking host system type" >&5
+
+host_alias=$host
+case "$host_alias" in
+NONE)
+ case $nonopt in
+ NONE)
+ if host_alias=`${CONFIG_SHELL-/bin/sh} $ac_config_guess`; then :
+ else { echo "configure: error: can not guess host type; you must specify one" 1>&2; exit 1; }
+ fi ;;
+ *) host_alias=$nonopt ;;
+ esac ;;
+esac
+
+host=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $host_alias`
+host_cpu=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+host_vendor=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+host_os=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+echo "$ac_t""$host" 1>&6
+
+echo $ac_n "checking build system type""... $ac_c" 1>&6
+echo "configure:846: checking build system type" >&5
+
+build_alias=$build
+case "$build_alias" in
+NONE)
+ case $nonopt in
+ NONE) build_alias=$host_alias ;;
+ *) build_alias=$nonopt ;;
+ esac ;;
+esac
+
+build=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $build_alias`
+build_cpu=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+build_vendor=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+build_os=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+echo "$ac_t""$build" 1>&6
+
+if test $host != $build; then
+ ac_tool_prefix=${host_alias}-
+else
+ ac_tool_prefix=
+fi
+
+# Extract the first word of "${ac_tool_prefix}ar", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ar; ac_word=$2
+echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
+echo "configure:872: checking for $ac_word" >&5
+if eval "test \"`echo '$''{'ac_cv_prog_AR'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ if test -n "$AR"; then
+ ac_cv_prog_AR="$AR" # Let the user override the test.
+else
+ IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":"
+ for ac_dir in $PATH; do
+ test -z "$ac_dir" && ac_dir=.
+ if test -f $ac_dir/$ac_word; then
+ ac_cv_prog_AR="${ac_tool_prefix}ar"
+ break
+ fi
+ done
+ IFS="$ac_save_ifs"
+ test -z "$ac_cv_prog_AR" && ac_cv_prog_AR="ar"
+fi
+fi
+AR="$ac_cv_prog_AR"
+if test -n "$AR"; then
+ echo "$ac_t""$AR" 1>&6
+else
+ echo "$ac_t""no" 1>&6
+fi
+
+
+
+# Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ranlib; ac_word=$2
+echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
+echo "configure:903: checking for $ac_word" >&5
+if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ if test -n "$RANLIB"; then
+ ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
+else
+ IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":"
+ for ac_dir in $PATH; do
+ test -z "$ac_dir" && ac_dir=.
+ if test -f $ac_dir/$ac_word; then
+ ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
+ break
+ fi
+ done
+ IFS="$ac_save_ifs"
+fi
+fi
+RANLIB="$ac_cv_prog_RANLIB"
+if test -n "$RANLIB"; then
+ echo "$ac_t""$RANLIB" 1>&6
+else
+ echo "$ac_t""no" 1>&6
+fi
+
+
+if test -z "$ac_cv_prog_RANLIB"; then
+if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "ranlib", so it can be a program name with args.
+set dummy ranlib; ac_word=$2
+echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
+echo "configure:934: checking for $ac_word" >&5
+if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ if test -n "$RANLIB"; then
+ ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
+else
+ IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":"
+ for ac_dir in $PATH; do
+ test -z "$ac_dir" && ac_dir=.
+ if test -f $ac_dir/$ac_word; then
+ ac_cv_prog_RANLIB="ranlib"
+ break
+ fi
+ done
+ IFS="$ac_save_ifs"
+ test -z "$ac_cv_prog_RANLIB" && ac_cv_prog_RANLIB=":"
+fi
+fi
+RANLIB="$ac_cv_prog_RANLIB"
+if test -n "$RANLIB"; then
+ echo "$ac_t""$RANLIB" 1>&6
+else
+ echo "$ac_t""no" 1>&6
+fi
+
+else
+ RANLIB=":"
+fi
+fi
+
+
+echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6
+echo "configure:967: checking how to run the C preprocessor" >&5
+# On Suns, sometimes $CPP names a directory.
+if test -n "$CPP" && test -d "$CPP"; then
+ CPP=
+fi
+if test -z "$CPP"; then
+if eval "test \"`echo '$''{'ac_cv_prog_CPP'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ # This must be in double quotes, not single quotes, because CPP may get
+ # substituted into the Makefile and "${CC-cc}" will confuse make.
+ CPP="${CC-cc} -E"
+ # On the NeXT, cc -E runs the code through the compiler's parser,
+ # not just through cpp.
+ cat > conftest.$ac_ext <<EOF
+#line 982 "configure"
+#include "confdefs.h"
+#include <assert.h>
+Syntax Error
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:988: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+ :
+else
+ echo "$ac_err" >&5
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ CPP="${CC-cc} -E -traditional-cpp"
+ cat > conftest.$ac_ext <<EOF
+#line 999 "configure"
+#include "confdefs.h"
+#include <assert.h>
+Syntax Error
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:1005: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+ :
+else
+ echo "$ac_err" >&5
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ CPP="${CC-cc} -nologo -E"
+ cat > conftest.$ac_ext <<EOF
+#line 1016 "configure"
+#include "confdefs.h"
+#include <assert.h>
+Syntax Error
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:1022: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+ :
+else
+ echo "$ac_err" >&5
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ CPP=/lib/cpp
+fi
+rm -f conftest*
+fi
+rm -f conftest*
+fi
+rm -f conftest*
+ ac_cv_prog_CPP="$CPP"
+fi
+ CPP="$ac_cv_prog_CPP"
+else
+ ac_cv_prog_CPP="$CPP"
+fi
+echo "$ac_t""$CPP" 1>&6
+
+for ac_hdr in unistd.h
+do
+ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
+echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
+echo "configure:1050: checking for $ac_hdr" >&5
+if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ cat > conftest.$ac_ext <<EOF
+#line 1055 "configure"
+#include "confdefs.h"
+#include <$ac_hdr>
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:1060: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+ rm -rf conftest*
+ eval "ac_cv_header_$ac_safe=yes"
+else
+ echo "$ac_err" >&5
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_header_$ac_safe=no"
+fi
+rm -f conftest*
+fi
+if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+ ac_tr_hdr=HAVE_`echo $ac_hdr | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'`
+ cat >> confdefs.h <<EOF
+#define $ac_tr_hdr 1
+EOF
+
+else
+ echo "$ac_t""no" 1>&6
+fi
+done
+
+for ac_func in getpagesize
+do
+echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
+echo "configure:1089: checking for $ac_func" >&5
+if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ cat > conftest.$ac_ext <<EOF
+#line 1094 "configure"
+#include "confdefs.h"
+/* System header to define __stub macros and hopefully few prototypes,
+ which can conflict with char $ac_func(); below. */
+#include <assert.h>
+/* Override any gcc2 internal prototype to avoid an error. */
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char $ac_func();
+
+int main() {
+
+/* The GNU C library defines this for functions which it implements
+ to always fail with ENOSYS. Some functions are actually named
+ something starting with __ and the normal name is an alias. */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+$ac_func();
+#endif
+
+; return 0; }
+EOF
+if { (eval echo configure:1117: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ eval "ac_cv_func_$ac_func=yes"
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_func_$ac_func=no"
+fi
+rm -f conftest*
+fi
+
+if eval "test \"`echo '$ac_cv_func_'$ac_func`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+ ac_tr_func=HAVE_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+ cat >> confdefs.h <<EOF
+#define $ac_tr_func 1
+EOF
+
+else
+ echo "$ac_t""no" 1>&6
+fi
+done
+
+echo $ac_n "checking for working mmap""... $ac_c" 1>&6
+echo "configure:1142: checking for working mmap" >&5
+if eval "test \"`echo '$''{'ac_cv_func_mmap_fixed_mapped'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ if test "$cross_compiling" = yes; then
+ ac_cv_func_mmap_fixed_mapped=no
+else
+ cat > conftest.$ac_ext <<EOF
+#line 1150 "configure"
+#include "confdefs.h"
+
+/* Thanks to Mike Haertel and Jim Avera for this test.
+ Here is a matrix of mmap possibilities:
+ mmap private not fixed
+ mmap private fixed at somewhere currently unmapped
+ mmap private fixed at somewhere already mapped
+ mmap shared not fixed
+ mmap shared fixed at somewhere currently unmapped
+ mmap shared fixed at somewhere already mapped
+ For private mappings, we should verify that changes cannot be read()
+ back from the file, nor mmap's back from the file at a different
+ address. (There have been systems where private was not correctly
+ implemented like the infamous i386 svr4.0, and systems where the
+ VM page cache was not coherent with the filesystem buffer cache
+ like early versions of FreeBSD and possibly contemporary NetBSD.)
+ For shared mappings, we should conversely verify that changes get
+ propogated back to all the places they're supposed to be.
+
+ Grep wants private fixed already mapped.
+ The main things grep needs to know about mmap are:
+ * does it exist and is it safe to write into the mmap'd area
+ * how to use it (BSD variants) */
+#include <sys/types.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+
+/* This mess was copied from the GNU getpagesize.h. */
+#ifndef HAVE_GETPAGESIZE
+# ifdef HAVE_UNISTD_H
+# include <unistd.h>
+# endif
+
+/* Assume that all systems that can run configure have sys/param.h. */
+# ifndef HAVE_SYS_PARAM_H
+# define HAVE_SYS_PARAM_H 1
+# endif
+
+# ifdef _SC_PAGESIZE
+# define getpagesize() sysconf(_SC_PAGESIZE)
+# else /* no _SC_PAGESIZE */
+# ifdef HAVE_SYS_PARAM_H
+# include <sys/param.h>
+# ifdef EXEC_PAGESIZE
+# define getpagesize() EXEC_PAGESIZE
+# else /* no EXEC_PAGESIZE */
+# ifdef NBPG
+# define getpagesize() NBPG * CLSIZE
+# ifndef CLSIZE
+# define CLSIZE 1
+# endif /* no CLSIZE */
+# else /* no NBPG */
+# ifdef NBPC
+# define getpagesize() NBPC
+# else /* no NBPC */
+# ifdef PAGESIZE
+# define getpagesize() PAGESIZE
+# endif /* PAGESIZE */
+# endif /* no NBPC */
+# endif /* no NBPG */
+# endif /* no EXEC_PAGESIZE */
+# else /* no HAVE_SYS_PARAM_H */
+# define getpagesize() 8192 /* punt totally */
+# endif /* no HAVE_SYS_PARAM_H */
+# endif /* no _SC_PAGESIZE */
+
+#endif /* no HAVE_GETPAGESIZE */
+
+#ifdef __cplusplus
+extern "C" { void *malloc(unsigned); }
+#else
+char *malloc();
+#endif
+
+int
+main()
+{
+ char *data, *data2, *data3;
+ int i, pagesize;
+ int fd;
+
+ pagesize = getpagesize();
+
+ /*
+ * First, make a file with some known garbage in it.
+ */
+ data = malloc(pagesize);
+ if (!data)
+ exit(1);
+ for (i = 0; i < pagesize; ++i)
+ *(data + i) = rand();
+ umask(0);
+ fd = creat("conftestmmap", 0600);
+ if (fd < 0)
+ exit(1);
+ if (write(fd, data, pagesize) != pagesize)
+ exit(1);
+ close(fd);
+
+ /*
+ * Next, try to mmap the file at a fixed address which
+ * already has something else allocated at it. If we can,
+ * also make sure that we see the same garbage.
+ */
+ fd = open("conftestmmap", O_RDWR);
+ if (fd < 0)
+ exit(1);
+ data2 = malloc(2 * pagesize);
+ if (!data2)
+ exit(1);
+ data2 += (pagesize - ((int) data2 & (pagesize - 1))) & (pagesize - 1);
+ if (data2 != mmap(data2, pagesize, PROT_READ | PROT_WRITE,
+ MAP_PRIVATE | MAP_FIXED, fd, 0L))
+ exit(1);
+ for (i = 0; i < pagesize; ++i)
+ if (*(data + i) != *(data2 + i))
+ exit(1);
+
+ /*
+ * Finally, make sure that changes to the mapped area
+ * do not percolate back to the file as seen by read().
+ * (This is a bug on some variants of i386 svr4.0.)
+ */
+ for (i = 0; i < pagesize; ++i)
+ *(data2 + i) = *(data2 + i) + 1;
+ data3 = malloc(pagesize);
+ if (!data3)
+ exit(1);
+ if (read(fd, data3, pagesize) != pagesize)
+ exit(1);
+ for (i = 0; i < pagesize; ++i)
+ if (*(data + i) != *(data3 + i))
+ exit(1);
+ close(fd);
+ unlink("conftestmmap");
+ exit(0);
+}
+
+EOF
+if { (eval echo configure:1290: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+then
+ ac_cv_func_mmap_fixed_mapped=yes
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -fr conftest*
+ ac_cv_func_mmap_fixed_mapped=no
+fi
+rm -fr conftest*
+fi
+
+fi
+
+echo "$ac_t""$ac_cv_func_mmap_fixed_mapped" 1>&6
+if test $ac_cv_func_mmap_fixed_mapped = yes; then
+ cat >> confdefs.h <<\EOF
+#define HAVE_MMAP 1
+EOF
+
+fi
+
+for ac_hdr in limits.h stddef.h
+do
+ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
+echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
+echo "configure:1316: checking for $ac_hdr" >&5
+if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ cat > conftest.$ac_ext <<EOF
+#line 1321 "configure"
+#include "confdefs.h"
+#include <$ac_hdr>
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:1326: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+ rm -rf conftest*
+ eval "ac_cv_header_$ac_safe=yes"
+else
+ echo "$ac_err" >&5
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_header_$ac_safe=no"
+fi
+rm -f conftest*
+fi
+if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+ ac_tr_hdr=HAVE_`echo $ac_hdr | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'`
+ cat >> confdefs.h <<EOF
+#define $ac_tr_hdr 1
+EOF
+
+else
+ echo "$ac_t""no" 1>&6
+fi
+done
+
+
+trap '' 1 2 15
+cat > confcache <<\EOF
+# This file is a shell script that caches the results of configure
+# tests run on this system so they can be shared between configure
+# scripts and configure runs. It is not useful on other systems.
+# If it contains results you don't want to keep, you may remove or edit it.
+#
+# By default, configure uses ./config.cache as the cache file,
+# creating it if it does not exist already. You can give configure
+# the --cache-file=FILE option to use a different cache file; that is
+# what configure does when it calls configure scripts in
+# subdirectories, so they share the cache.
+# Giving --cache-file=/dev/null disables caching, for debugging configure.
+# config.status only pays attention to the cache file if you give it the
+# --recheck option to rerun configure.
+#
+EOF
+# The following way of writing the cache mishandles newlines in values,
+# but we know of no workaround that is simple, portable, and efficient.
+# So, don't put newlines in cache variables' values.
+# Ultrix sh set writes to stderr and can't be redirected directly,
+# and sets the high bit in the cache file unless we assign to the vars.
+(set) 2>&1 |
+ case `(ac_space=' '; set) 2>&1 | grep ac_space` in
+ *ac_space=\ *)
+ # `set' does not quote correctly, so add quotes (double-quote substitution
+ # turns \\\\ into \\, and sed turns \\ into \).
+ sed -n \
+ -e "s/'/'\\\\''/g" \
+ -e "s/^\\([a-zA-Z0-9_]*_cv_[a-zA-Z0-9_]*\\)=\\(.*\\)/\\1=\${\\1='\\2'}/p"
+ ;;
+ *)
+ # `set' quotes correctly as required by POSIX, so do not add quotes.
+ sed -n -e 's/^\([a-zA-Z0-9_]*_cv_[a-zA-Z0-9_]*\)=\(.*\)/\1=${\1=\2}/p'
+ ;;
+ esac >> confcache
+if cmp -s $cache_file confcache; then
+ :
+else
+ if test -w $cache_file; then
+ echo "updating cache $cache_file"
+ cat confcache > $cache_file
+ else
+ echo "not updating unwritable cache $cache_file"
+ fi
+fi
+rm -f confcache
+
+trap 'rm -fr conftest* confdefs* core core.* *.core $ac_clean_files; exit 1' 1 2 15
+
+test "x$prefix" = xNONE && prefix=$ac_default_prefix
+# Let make expand exec_prefix.
+test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
+
+# Any assignment to VPATH causes Sun make to only execute
+# the first set of double-colon rules, so remove it if not needed.
+# If there is a colon in the path, we need to keep it.
+if test "x$srcdir" = x.; then
+ ac_vpsub='/^[ ]*VPATH[ ]*=[^:]*$/d'
+fi
+
+trap 'rm -f $CONFIG_STATUS conftest*; exit 1' 1 2 15
+
+# Transform confdefs.h into DEFS.
+# Protect against shell expansion while executing Makefile rules.
+# Protect against Makefile macro expansion.
+cat > conftest.defs <<\EOF
+s%#define \([A-Za-z_][A-Za-z0-9_]*\) *\(.*\)%-D\1=\2%g
+s%[ `~#$^&*(){}\\|;'"<>?]%\\&%g
+s%\[%\\&%g
+s%\]%\\&%g
+s%\$%$$%g
+EOF
+DEFS=`sed -f conftest.defs confdefs.h | tr '\012' ' '`
+rm -f conftest.defs
+
+
+# Without the "./", some shells look in PATH for config.status.
+: ${CONFIG_STATUS=./config.status}
+
+echo creating $CONFIG_STATUS
+rm -f $CONFIG_STATUS
+cat > $CONFIG_STATUS <<EOF
+#! /bin/sh
+# Generated automatically by configure.
+# Run this file to recreate the current configuration.
+# This directory was configured as follows,
+# on host `(hostname || uname -n) 2>/dev/null | sed 1q`:
+#
+# $0 $ac_configure_args
+#
+# Compiler output produced by configure, useful for debugging
+# configure, is in ./config.log if it exists.
+
+ac_cs_usage="Usage: $CONFIG_STATUS [--recheck] [--version] [--help]"
+for ac_option
+do
+ case "\$ac_option" in
+ -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+ echo "running \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion"
+ exec \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion ;;
+ -version | --version | --versio | --versi | --vers | --ver | --ve | --v)
+ echo "$CONFIG_STATUS generated by autoconf version 2.12.2"
+ exit 0 ;;
+ -help | --help | --hel | --he | --h)
+ echo "\$ac_cs_usage"; exit 0 ;;
+ *) echo "\$ac_cs_usage"; exit 1 ;;
+ esac
+done
+
+ac_given_srcdir=$srcdir
+ac_given_INSTALL="$INSTALL"
+
+trap 'rm -fr `echo "Makefile" | sed "s/:[^ ]*//g"` conftest*; exit 1' 1 2 15
+EOF
+cat >> $CONFIG_STATUS <<EOF
+
+# Protect against being on the right side of a sed subst in config.status.
+sed 's/%@/@@/; s/@%/@@/; s/%g\$/@g/; /@g\$/s/[\\\\&%]/\\\\&/g;
+ s/@@/%@/; s/@@/@%/; s/@g\$/%g/' > conftest.subs <<\\CEOF
+$ac_vpsub
+$extrasub
+s%@SHELL@%$SHELL%g
+s%@CFLAGS@%$CFLAGS%g
+s%@CPPFLAGS@%$CPPFLAGS%g
+s%@CXXFLAGS@%$CXXFLAGS%g
+s%@DEFS@%$DEFS%g
+s%@LDFLAGS@%$LDFLAGS%g
+s%@LIBS@%$LIBS%g
+s%@exec_prefix@%$exec_prefix%g
+s%@prefix@%$prefix%g
+s%@program_transform_name@%$program_transform_name%g
+s%@bindir@%$bindir%g
+s%@sbindir@%$sbindir%g
+s%@libexecdir@%$libexecdir%g
+s%@datadir@%$datadir%g
+s%@sysconfdir@%$sysconfdir%g
+s%@sharedstatedir@%$sharedstatedir%g
+s%@localstatedir@%$localstatedir%g
+s%@libdir@%$libdir%g
+s%@includedir@%$includedir%g
+s%@oldincludedir@%$oldincludedir%g
+s%@infodir@%$infodir%g
+s%@mandir@%$mandir%g
+s%@CC@%$CC%g
+s%@INSTALL_PROGRAM@%$INSTALL_PROGRAM%g
+s%@INSTALL_DATA@%$INSTALL_DATA%g
+s%@host@%$host%g
+s%@host_alias@%$host_alias%g
+s%@host_cpu@%$host_cpu%g
+s%@host_vendor@%$host_vendor%g
+s%@host_os@%$host_os%g
+s%@build@%$build%g
+s%@build_alias@%$build_alias%g
+s%@build_cpu@%$build_cpu%g
+s%@build_vendor@%$build_vendor%g
+s%@build_os@%$build_os%g
+s%@AR@%$AR%g
+s%@RANLIB@%$RANLIB%g
+s%@CPP@%$CPP%g
+
+CEOF
+EOF
+
+cat >> $CONFIG_STATUS <<\EOF
+
+# Split the substitutions into bite-sized pieces for seds with
+# small command number limits, like on Digital OSF/1 and HP-UX.
+ac_max_sed_cmds=90 # Maximum number of lines to put in a sed script.
+ac_file=1 # Number of current file.
+ac_beg=1 # First line for current file.
+ac_end=$ac_max_sed_cmds # Line after last line for current file.
+ac_more_lines=:
+ac_sed_cmds=""
+while $ac_more_lines; do
+ if test $ac_beg -gt 1; then
+ sed "1,${ac_beg}d; ${ac_end}q" conftest.subs > conftest.s$ac_file
+ else
+ sed "${ac_end}q" conftest.subs > conftest.s$ac_file
+ fi
+ if test ! -s conftest.s$ac_file; then
+ ac_more_lines=false
+ rm -f conftest.s$ac_file
+ else
+ if test -z "$ac_sed_cmds"; then
+ ac_sed_cmds="sed -f conftest.s$ac_file"
+ else
+ ac_sed_cmds="$ac_sed_cmds | sed -f conftest.s$ac_file"
+ fi
+ ac_file=`expr $ac_file + 1`
+ ac_beg=$ac_end
+ ac_end=`expr $ac_end + $ac_max_sed_cmds`
+ fi
+done
+if test -z "$ac_sed_cmds"; then
+ ac_sed_cmds=cat
+fi
+EOF
+
+cat >> $CONFIG_STATUS <<EOF
+
+CONFIG_FILES=\${CONFIG_FILES-"Makefile"}
+EOF
+cat >> $CONFIG_STATUS <<\EOF
+for ac_file in .. $CONFIG_FILES; do if test "x$ac_file" != x..; then
+ # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in".
+ case "$ac_file" in
+ *:*) ac_file_in=`echo "$ac_file"|sed 's%[^:]*:%%'`
+ ac_file=`echo "$ac_file"|sed 's%:.*%%'` ;;
+ *) ac_file_in="${ac_file}.in" ;;
+ esac
+
+ # Adjust a relative srcdir, top_srcdir, and INSTALL for subdirectories.
+
+ # Remove last slash and all that follows it. Not all systems have dirname.
+ ac_dir=`echo $ac_file|sed 's%/[^/][^/]*$%%'`
+ if test "$ac_dir" != "$ac_file" && test "$ac_dir" != .; then
+ # The file is in a subdirectory.
+ test ! -d "$ac_dir" && mkdir "$ac_dir"
+ ac_dir_suffix="/`echo $ac_dir|sed 's%^\./%%'`"
+ # A "../" for each directory in $ac_dir_suffix.
+ ac_dots=`echo $ac_dir_suffix|sed 's%/[^/]*%../%g'`
+ else
+ ac_dir_suffix= ac_dots=
+ fi
+
+ case "$ac_given_srcdir" in
+ .) srcdir=.
+ if test -z "$ac_dots"; then top_srcdir=.
+ else top_srcdir=`echo $ac_dots|sed 's%/$%%'`; fi ;;
+ /*) srcdir="$ac_given_srcdir$ac_dir_suffix"; top_srcdir="$ac_given_srcdir" ;;
+ *) # Relative path.
+ srcdir="$ac_dots$ac_given_srcdir$ac_dir_suffix"
+ top_srcdir="$ac_dots$ac_given_srcdir" ;;
+ esac
+
+ case "$ac_given_INSTALL" in
+ [/$]*) INSTALL="$ac_given_INSTALL" ;;
+ *) INSTALL="$ac_dots$ac_given_INSTALL" ;;
+ esac
+
+ echo creating "$ac_file"
+ rm -f "$ac_file"
+ configure_input="Generated automatically from `echo $ac_file_in|sed 's%.*/%%'` by configure."
+ case "$ac_file" in
+ *Makefile*) ac_comsub="1i\\
+# $configure_input" ;;
+ *) ac_comsub= ;;
+ esac
+
+ ac_file_inputs=`echo $ac_file_in|sed -e "s%^%$ac_given_srcdir/%" -e "s%:% $ac_given_srcdir/%g"`
+ sed -e "$ac_comsub
+s%@configure_input@%$configure_input%g
+s%@srcdir@%$srcdir%g
+s%@top_srcdir@%$top_srcdir%g
+s%@INSTALL@%$INSTALL%g
+" $ac_file_inputs | (eval "$ac_sed_cmds") > $ac_file
+fi; done
+rm -f conftest.s*
+
+EOF
+cat >> $CONFIG_STATUS <<EOF
+
+EOF
+cat >> $CONFIG_STATUS <<\EOF
+
+exit 0
+EOF
+chmod +x $CONFIG_STATUS
+rm -fr confdefs* $ac_clean_files
+test "$no_create" = yes || ${CONFIG_SHELL-/bin/sh} $CONFIG_STATUS || exit 1
+
diff --git a/mmalloc/configure.in b/mmalloc/configure.in
new file mode 100644
index 00000000000..bf12661c29e
--- /dev/null
+++ b/mmalloc/configure.in
@@ -0,0 +1,13 @@
+dnl Process this file with autoconf to produce a configure script.
+AC_PREREQ(2.12.1)dnl
+AC_INIT(mmalloc.c)
+
+AC_PROG_CC
+AC_PROG_INSTALL
+AC_CHECK_TOOL(AR, ar)
+AC_CHECK_TOOL(RANLIB, ranlib, :)
+
+AC_FUNC_MMAP
+AC_CHECK_HEADERS(limits.h stddef.h)
+
+AC_OUTPUT(Makefile)
diff --git a/mmalloc/detach.c b/mmalloc/detach.c
new file mode 100644
index 00000000000..1780679417d
--- /dev/null
+++ b/mmalloc/detach.c
@@ -0,0 +1,71 @@
+/* Finish access to a mmap'd malloc managed region.
+ Copyright 1992 Free Software Foundation, Inc.
+
+ Contributed by Fred Fish at Cygnus Support. fnf@cygnus.com
+
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+#include <sys/types.h>
+#include "mmprivate.h"
+
+/* Terminate access to a mmalloc managed region by unmapping all memory pages
+ associated with the region, and closing the file descriptor if it is one
+ that we opened.
+
+ Returns NULL on success.
+
+ Returns the malloc descriptor on failure, which can subsequently be used
+ for further action, such as obtaining more information about the nature of
+ the failure by examining the preserved errno value.
+
+ Note that the malloc descriptor that we are using is currently located in
+ region we are about to unmap, so we first make a local copy of it on the
+ stack and use the copy. */
+
+PTR
+mmalloc_detach (md)
+ PTR md;
+{
+ struct mdesc mtemp;
+
+ if (md != NULL)
+ {
+
+ mtemp = *(struct mdesc *) md;
+
+ /* Now unmap all the pages associated with this region by asking for a
+ negative increment equal to the current size of the region. */
+
+ if ((mtemp.morecore (&mtemp, mtemp.base - mtemp.breakval)) == NULL)
+ {
+ /* Deallocating failed. Update the original malloc descriptor
+ with any changes */
+ *(struct mdesc *) md = mtemp;
+ }
+ else
+ {
+ if (mtemp.flags & MMALLOC_DEVZERO)
+ {
+ close (mtemp.fd);
+ }
+ md = NULL;
+ }
+ }
+
+ return (md);
+}
diff --git a/mmalloc/keys.c b/mmalloc/keys.c
new file mode 100644
index 00000000000..35f00d19ba3
--- /dev/null
+++ b/mmalloc/keys.c
@@ -0,0 +1,66 @@
+/* Access for application keys in mmap'd malloc managed region.
+ Copyright 1992 Free Software Foundation, Inc.
+
+ Contributed by Fred Fish at Cygnus Support. fnf@cygnus.com
+
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+/* This module provides access to some keys that the application can use to
+ provide persistent access to locations in the mapped memory section.
+ The intent is that these keys are to be used sparingly as sort of
+ persistent global variables which the application can use to reinitialize
+ access to data in the mapped region.
+
+ For the moment, these keys are simply stored in the malloc descriptor
+ itself, in an array of fixed length. This should be fixed so that there
+ can be an unlimited number of keys, possibly using a multilevel access
+ scheme of some sort. */
+
+#include "mmprivate.h"
+
+int
+mmalloc_setkey (md, keynum, key)
+ PTR md;
+ int keynum;
+ PTR key;
+{
+ struct mdesc *mdp = (struct mdesc *) md;
+ int result = 0;
+
+ if ((mdp != NULL) && (keynum >= 0) && (keynum < MMALLOC_KEYS))
+ {
+ mdp -> keys [keynum] = key;
+ result++;
+ }
+ return (result);
+}
+
+PTR
+mmalloc_getkey (md, keynum)
+ PTR md;
+ int keynum;
+{
+ struct mdesc *mdp = (struct mdesc *) md;
+ PTR keyval = NULL;
+
+ if ((mdp != NULL) && (keynum >= 0) && (keynum < MMALLOC_KEYS))
+ {
+ keyval = mdp -> keys [keynum];
+ }
+ return (keyval);
+}
diff --git a/mmalloc/mcalloc.c b/mmalloc/mcalloc.c
new file mode 100644
index 00000000000..c9fcc07e894
--- /dev/null
+++ b/mmalloc/mcalloc.c
@@ -0,0 +1,54 @@
+/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+#include <sys/types.h> /* GCC on HP/UX needs this before string.h. */
+#include <string.h> /* Prototypes for memcpy, memmove, memset, etc */
+
+#include "mmprivate.h"
+
+/* Allocate an array of NMEMB elements each SIZE bytes long.
+ The entire array is initialized to zeros. */
+
+PTR
+mcalloc (md, nmemb, size)
+ PTR md;
+ register size_t nmemb;
+ register size_t size;
+{
+ register PTR result;
+
+ if ((result = mmalloc (md, nmemb * size)) != NULL)
+ {
+ memset (result, 0, nmemb * size);
+ }
+ return (result);
+}
+
+/* When using this package, provide a version of malloc/realloc/free built
+ on top of it, so that if we use the default sbrk() region we will not
+ collide with another malloc package trying to do the same thing, if
+ the application contains any "hidden" calls to malloc/realloc/free (such
+ as inside a system library). */
+
+PTR
+calloc (nmemb, size)
+ size_t nmemb;
+ size_t size;
+{
+ return (mcalloc ((PTR) NULL, nmemb, size));
+}
diff --git a/mmalloc/mfree.c b/mmalloc/mfree.c
new file mode 100644
index 00000000000..c509ac6e2a6
--- /dev/null
+++ b/mmalloc/mfree.c
@@ -0,0 +1,247 @@
+/* Free a block of memory allocated by `mmalloc'.
+ Copyright 1990, 1991, 1992 Free Software Foundation
+
+ Written May 1989 by Mike Haertel.
+ Heavily modified Mar 1992 by Fred Fish. (fnf@cygnus.com)
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.
+
+ The author may be reached (Email) at the address mike@ai.mit.edu,
+ or (US mail) as Mike Haertel c/o Free Software Foundation. */
+
+#include "mmprivate.h"
+
+/* Return memory to the heap.
+ Like `mfree' but don't call a mfree_hook if there is one. */
+
+void
+__mmalloc_free (mdp, ptr)
+ struct mdesc *mdp;
+ PTR ptr;
+{
+ int type;
+ size_t block, blocks;
+ register size_t i;
+ struct list *prev, *next;
+
+ block = BLOCK (ptr);
+
+ type = mdp -> heapinfo[block].busy.type;
+ switch (type)
+ {
+ case 0:
+ /* Get as many statistics as early as we can. */
+ mdp -> heapstats.chunks_used--;
+ mdp -> heapstats.bytes_used -=
+ mdp -> heapinfo[block].busy.info.size * BLOCKSIZE;
+ mdp -> heapstats.bytes_free +=
+ mdp -> heapinfo[block].busy.info.size * BLOCKSIZE;
+
+ /* Find the free cluster previous to this one in the free list.
+ Start searching at the last block referenced; this may benefit
+ programs with locality of allocation. */
+ i = mdp -> heapindex;
+ if (i > block)
+ {
+ while (i > block)
+ {
+ i = mdp -> heapinfo[i].free.prev;
+ }
+ }
+ else
+ {
+ do
+ {
+ i = mdp -> heapinfo[i].free.next;
+ }
+ while ((i != 0) && (i < block));
+ i = mdp -> heapinfo[i].free.prev;
+ }
+
+ /* Determine how to link this block into the free list. */
+ if (block == i + mdp -> heapinfo[i].free.size)
+ {
+ /* Coalesce this block with its predecessor. */
+ mdp -> heapinfo[i].free.size +=
+ mdp -> heapinfo[block].busy.info.size;
+ block = i;
+ }
+ else
+ {
+ /* Really link this block back into the free list. */
+ mdp -> heapinfo[block].free.size =
+ mdp -> heapinfo[block].busy.info.size;
+ mdp -> heapinfo[block].free.next = mdp -> heapinfo[i].free.next;
+ mdp -> heapinfo[block].free.prev = i;
+ mdp -> heapinfo[i].free.next = block;
+ mdp -> heapinfo[mdp -> heapinfo[block].free.next].free.prev = block;
+ mdp -> heapstats.chunks_free++;
+ }
+
+ /* Now that the block is linked in, see if we can coalesce it
+ with its successor (by deleting its successor from the list
+ and adding in its size). */
+ if (block + mdp -> heapinfo[block].free.size ==
+ mdp -> heapinfo[block].free.next)
+ {
+ mdp -> heapinfo[block].free.size
+ += mdp -> heapinfo[mdp -> heapinfo[block].free.next].free.size;
+ mdp -> heapinfo[block].free.next
+ = mdp -> heapinfo[mdp -> heapinfo[block].free.next].free.next;
+ mdp -> heapinfo[mdp -> heapinfo[block].free.next].free.prev = block;
+ mdp -> heapstats.chunks_free--;
+ }
+
+ /* Now see if we can return stuff to the system. */
+ blocks = mdp -> heapinfo[block].free.size;
+ if (blocks >= FINAL_FREE_BLOCKS && block + blocks == mdp -> heaplimit
+ && mdp -> morecore (mdp, 0) == ADDRESS (block + blocks))
+ {
+ register size_t bytes = blocks * BLOCKSIZE;
+ mdp -> heaplimit -= blocks;
+ mdp -> morecore (mdp, -bytes);
+ mdp -> heapinfo[mdp -> heapinfo[block].free.prev].free.next
+ = mdp -> heapinfo[block].free.next;
+ mdp -> heapinfo[mdp -> heapinfo[block].free.next].free.prev
+ = mdp -> heapinfo[block].free.prev;
+ block = mdp -> heapinfo[block].free.prev;
+ mdp -> heapstats.chunks_free--;
+ mdp -> heapstats.bytes_free -= bytes;
+ }
+
+ /* Set the next search to begin at this block. */
+ mdp -> heapindex = block;
+ break;
+
+ default:
+ /* Do some of the statistics. */
+ mdp -> heapstats.chunks_used--;
+ mdp -> heapstats.bytes_used -= 1 << type;
+ mdp -> heapstats.chunks_free++;
+ mdp -> heapstats.bytes_free += 1 << type;
+
+ /* Get the address of the first free fragment in this block. */
+ prev = (struct list *)
+ ((char *) ADDRESS(block) +
+ (mdp -> heapinfo[block].busy.info.frag.first << type));
+
+ if (mdp -> heapinfo[block].busy.info.frag.nfree ==
+ (BLOCKSIZE >> type) - 1)
+ {
+ /* If all fragments of this block are free, remove them
+ from the fragment list and free the whole block. */
+ next = prev;
+ for (i = 1; i < (size_t) (BLOCKSIZE >> type); ++i)
+ {
+ next = next -> next;
+ }
+ prev -> prev -> next = next;
+ if (next != NULL)
+ {
+ next -> prev = prev -> prev;
+ }
+ mdp -> heapinfo[block].busy.type = 0;
+ mdp -> heapinfo[block].busy.info.size = 1;
+
+ /* Keep the statistics accurate. */
+ mdp -> heapstats.chunks_used++;
+ mdp -> heapstats.bytes_used += BLOCKSIZE;
+ mdp -> heapstats.chunks_free -= BLOCKSIZE >> type;
+ mdp -> heapstats.bytes_free -= BLOCKSIZE;
+
+ mfree ((PTR) mdp, (PTR) ADDRESS(block));
+ }
+ else if (mdp -> heapinfo[block].busy.info.frag.nfree != 0)
+ {
+ /* If some fragments of this block are free, link this
+ fragment into the fragment list after the first free
+ fragment of this block. */
+ next = (struct list *) ptr;
+ next -> next = prev -> next;
+ next -> prev = prev;
+ prev -> next = next;
+ if (next -> next != NULL)
+ {
+ next -> next -> prev = next;
+ }
+ ++mdp -> heapinfo[block].busy.info.frag.nfree;
+ }
+ else
+ {
+ /* No fragments of this block are free, so link this
+ fragment into the fragment list and announce that
+ it is the first free fragment of this block. */
+ prev = (struct list *) ptr;
+ mdp -> heapinfo[block].busy.info.frag.nfree = 1;
+ mdp -> heapinfo[block].busy.info.frag.first =
+ RESIDUAL (ptr, BLOCKSIZE) >> type;
+ prev -> next = mdp -> fraghead[type].next;
+ prev -> prev = &mdp -> fraghead[type];
+ prev -> prev -> next = prev;
+ if (prev -> next != NULL)
+ {
+ prev -> next -> prev = prev;
+ }
+ }
+ break;
+ }
+}
+
+/* Return memory to the heap. */
+
+void
+mfree (md, ptr)
+ PTR md;
+ PTR ptr;
+{
+ struct mdesc *mdp;
+ register struct alignlist *l;
+
+ if (ptr != NULL)
+ {
+ mdp = MD_TO_MDP (md);
+ for (l = mdp -> aligned_blocks; l != NULL; l = l -> next)
+ {
+ if (l -> aligned == ptr)
+ {
+ l -> aligned = NULL; /* Mark the slot in the list as free. */
+ ptr = l -> exact;
+ break;
+ }
+ }
+ if (mdp -> mfree_hook != NULL)
+ {
+ (*mdp -> mfree_hook) (md, ptr);
+ }
+ else
+ {
+ __mmalloc_free (mdp, ptr);
+ }
+ }
+}
+
+/* When using this package, provide a version of malloc/realloc/free built
+ on top of it, so that if we use the default sbrk() region we will not
+ collide with another malloc package trying to do the same thing, if
+ the application contains any "hidden" calls to malloc/realloc/free (such
+ as inside a system library). */
+
+void
+free (ptr)
+ PTR ptr;
+{
+ mfree ((PTR) NULL, ptr);
+}
diff --git a/mmalloc/mm.c b/mmalloc/mm.c
new file mode 100644
index 00000000000..b555f09f173
--- /dev/null
+++ b/mmalloc/mm.c
@@ -0,0 +1,37 @@
+/* Build the entire mmalloc library as a single object module. This
+ avoids having clients pick up part of their allocation routines
+ from mmalloc and part from libc, which results in undefined
+ behavior. It should also still be possible to build the library
+ as a standard library with multiple objects.
+
+ Copyright 1996 Free Software Foundation
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+#include "mcalloc.c"
+#include "mfree.c"
+#include "mmalloc.c"
+#include "mmcheck.c"
+#include "mmemalign.c"
+#include "mmstats.c"
+#include "mmtrace.c"
+#include "mrealloc.c"
+#include "mvalloc.c"
+#include "mmap-sup.c"
+#include "attach.c"
+#include "detach.c"
+#include "keys.c"
+#include "sbrk-sup.c"
diff --git a/mmalloc/mmalloc.c b/mmalloc/mmalloc.c
new file mode 100644
index 00000000000..7c60fe2d57b
--- /dev/null
+++ b/mmalloc/mmalloc.c
@@ -0,0 +1,337 @@
+/* Memory allocator `malloc'.
+ Copyright 1990, 1991, 1992 Free Software Foundation
+
+ Written May 1989 by Mike Haertel.
+ Heavily modified Mar 1992 by Fred Fish for mmap'd version.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.
+
+ The author may be reached (Email) at the address mike@ai.mit.edu,
+ or (US mail) as Mike Haertel c/o Free Software Foundation. */
+
+#include <string.h> /* Prototypes for memcpy, memmove, memset, etc */
+
+#include "mmprivate.h"
+
+/* Prototypes for local functions */
+
+static int initialize PARAMS ((struct mdesc *));
+static PTR morecore PARAMS ((struct mdesc *, size_t));
+static PTR align PARAMS ((struct mdesc *, size_t));
+
+/* Aligned allocation. */
+
+static PTR
+align (mdp, size)
+ struct mdesc *mdp;
+ size_t size;
+{
+ PTR result;
+ unsigned long int adj;
+
+ result = mdp -> morecore (mdp, size);
+ adj = RESIDUAL (result, BLOCKSIZE);
+ if (adj != 0)
+ {
+ adj = BLOCKSIZE - adj;
+ mdp -> morecore (mdp, adj);
+ result = (char *) result + adj;
+ }
+ return (result);
+}
+
+/* Set everything up and remember that we have. */
+
+static int
+initialize (mdp)
+ struct mdesc *mdp;
+{
+ mdp -> heapsize = HEAP / BLOCKSIZE;
+ mdp -> heapinfo = (malloc_info *)
+ align (mdp, mdp -> heapsize * sizeof (malloc_info));
+ if (mdp -> heapinfo == NULL)
+ {
+ return (0);
+ }
+ memset ((PTR)mdp -> heapinfo, 0, mdp -> heapsize * sizeof (malloc_info));
+ mdp -> heapinfo[0].free.size = 0;
+ mdp -> heapinfo[0].free.next = mdp -> heapinfo[0].free.prev = 0;
+ mdp -> heapindex = 0;
+ mdp -> heapbase = (char *) mdp -> heapinfo;
+ mdp -> flags |= MMALLOC_INITIALIZED;
+ return (1);
+}
+
+/* Get neatly aligned memory, initializing or
+ growing the heap info table as necessary. */
+
+static PTR
+morecore (mdp, size)
+ struct mdesc *mdp;
+ size_t size;
+{
+ PTR result;
+ malloc_info *newinfo, *oldinfo;
+ size_t newsize;
+
+ result = align (mdp, size);
+ if (result == NULL)
+ {
+ return (NULL);
+ }
+
+ /* Check if we need to grow the info table. */
+ if ((size_t) BLOCK ((char *) result + size) > mdp -> heapsize)
+ {
+ newsize = mdp -> heapsize;
+ while ((size_t) BLOCK ((char *) result + size) > newsize)
+ {
+ newsize *= 2;
+ }
+ newinfo = (malloc_info *) align (mdp, newsize * sizeof (malloc_info));
+ if (newinfo == NULL)
+ {
+ mdp -> morecore (mdp, -size);
+ return (NULL);
+ }
+ memset ((PTR) newinfo, 0, newsize * sizeof (malloc_info));
+ memcpy ((PTR) newinfo, (PTR) mdp -> heapinfo,
+ mdp -> heapsize * sizeof (malloc_info));
+ oldinfo = mdp -> heapinfo;
+ newinfo[BLOCK (oldinfo)].busy.type = 0;
+ newinfo[BLOCK (oldinfo)].busy.info.size
+ = BLOCKIFY (mdp -> heapsize * sizeof (malloc_info));
+ mdp -> heapinfo = newinfo;
+ __mmalloc_free (mdp, (PTR)oldinfo);
+ mdp -> heapsize = newsize;
+ }
+
+ mdp -> heaplimit = BLOCK ((char *) result + size);
+ return (result);
+}
+
+/* Allocate memory from the heap. */
+
+PTR
+mmalloc (md, size)
+ PTR md;
+ size_t size;
+{
+ struct mdesc *mdp;
+ PTR result;
+ size_t block, blocks, lastblocks, start;
+ register size_t i;
+ struct list *next;
+ register size_t log;
+
+ if (size == 0)
+ {
+ return (NULL);
+ }
+
+ mdp = MD_TO_MDP (md);
+
+ if (mdp -> mmalloc_hook != NULL)
+ {
+ return ((*mdp -> mmalloc_hook) (md, size));
+ }
+
+ if (!(mdp -> flags & MMALLOC_INITIALIZED))
+ {
+ if (!initialize (mdp))
+ {
+ return (NULL);
+ }
+ }
+
+ if (size < sizeof (struct list))
+ {
+ size = sizeof (struct list);
+ }
+
+ /* Determine the allocation policy based on the request size. */
+ if (size <= BLOCKSIZE / 2)
+ {
+ /* Small allocation to receive a fragment of a block.
+ Determine the logarithm to base two of the fragment size. */
+ log = 1;
+ --size;
+ while ((size /= 2) != 0)
+ {
+ ++log;
+ }
+
+ /* Look in the fragment lists for a
+ free fragment of the desired size. */
+ next = mdp -> fraghead[log].next;
+ if (next != NULL)
+ {
+ /* There are free fragments of this size.
+ Pop a fragment out of the fragment list and return it.
+ Update the block's nfree and first counters. */
+ result = (PTR) next;
+ next -> prev -> next = next -> next;
+ if (next -> next != NULL)
+ {
+ next -> next -> prev = next -> prev;
+ }
+ block = BLOCK (result);
+ if (--mdp -> heapinfo[block].busy.info.frag.nfree != 0)
+ {
+ mdp -> heapinfo[block].busy.info.frag.first =
+ RESIDUAL (next -> next, BLOCKSIZE) >> log;
+ }
+
+ /* Update the statistics. */
+ mdp -> heapstats.chunks_used++;
+ mdp -> heapstats.bytes_used += 1 << log;
+ mdp -> heapstats.chunks_free--;
+ mdp -> heapstats.bytes_free -= 1 << log;
+ }
+ else
+ {
+ /* No free fragments of the desired size, so get a new block
+ and break it into fragments, returning the first. */
+ result = mmalloc (md, BLOCKSIZE);
+ if (result == NULL)
+ {
+ return (NULL);
+ }
+
+ /* Link all fragments but the first into the free list. */
+ for (i = 1; i < (size_t) (BLOCKSIZE >> log); ++i)
+ {
+ next = (struct list *) ((char *) result + (i << log));
+ next -> next = mdp -> fraghead[log].next;
+ next -> prev = &mdp -> fraghead[log];
+ next -> prev -> next = next;
+ if (next -> next != NULL)
+ {
+ next -> next -> prev = next;
+ }
+ }
+
+ /* Initialize the nfree and first counters for this block. */
+ block = BLOCK (result);
+ mdp -> heapinfo[block].busy.type = log;
+ mdp -> heapinfo[block].busy.info.frag.nfree = i - 1;
+ mdp -> heapinfo[block].busy.info.frag.first = i - 1;
+
+ mdp -> heapstats.chunks_free += (BLOCKSIZE >> log) - 1;
+ mdp -> heapstats.bytes_free += BLOCKSIZE - (1 << log);
+ mdp -> heapstats.bytes_used -= BLOCKSIZE - (1 << log);
+ }
+ }
+ else
+ {
+ /* Large allocation to receive one or more blocks.
+ Search the free list in a circle starting at the last place visited.
+ If we loop completely around without finding a large enough
+ space we will have to get more memory from the system. */
+ blocks = BLOCKIFY(size);
+ start = block = MALLOC_SEARCH_START;
+ while (mdp -> heapinfo[block].free.size < blocks)
+ {
+ block = mdp -> heapinfo[block].free.next;
+ if (block == start)
+ {
+ /* Need to get more from the system. Check to see if
+ the new core will be contiguous with the final free
+ block; if so we don't need to get as much. */
+ block = mdp -> heapinfo[0].free.prev;
+ lastblocks = mdp -> heapinfo[block].free.size;
+ if (mdp -> heaplimit != 0 &&
+ block + lastblocks == mdp -> heaplimit &&
+ mdp -> morecore (mdp, 0) == ADDRESS(block + lastblocks) &&
+ (morecore (mdp, (blocks - lastblocks) * BLOCKSIZE)) != NULL)
+ {
+ /* Which block we are extending (the `final free
+ block' referred to above) might have changed, if
+ it got combined with a freed info table. */
+ block = mdp -> heapinfo[0].free.prev;
+
+ mdp -> heapinfo[block].free.size += (blocks - lastblocks);
+ mdp -> heapstats.bytes_free +=
+ (blocks - lastblocks) * BLOCKSIZE;
+ continue;
+ }
+ result = morecore(mdp, blocks * BLOCKSIZE);
+ if (result == NULL)
+ {
+ return (NULL);
+ }
+ block = BLOCK (result);
+ mdp -> heapinfo[block].busy.type = 0;
+ mdp -> heapinfo[block].busy.info.size = blocks;
+ mdp -> heapstats.chunks_used++;
+ mdp -> heapstats.bytes_used += blocks * BLOCKSIZE;
+ return (result);
+ }
+ }
+
+ /* At this point we have found a suitable free list entry.
+ Figure out how to remove what we need from the list. */
+ result = ADDRESS(block);
+ if (mdp -> heapinfo[block].free.size > blocks)
+ {
+ /* The block we found has a bit left over,
+ so relink the tail end back into the free list. */
+ mdp -> heapinfo[block + blocks].free.size
+ = mdp -> heapinfo[block].free.size - blocks;
+ mdp -> heapinfo[block + blocks].free.next
+ = mdp -> heapinfo[block].free.next;
+ mdp -> heapinfo[block + blocks].free.prev
+ = mdp -> heapinfo[block].free.prev;
+ mdp -> heapinfo[mdp -> heapinfo[block].free.prev].free.next
+ = mdp -> heapinfo[mdp -> heapinfo[block].free.next].free.prev
+ = mdp -> heapindex = block + blocks;
+ }
+ else
+ {
+ /* The block exactly matches our requirements,
+ so just remove it from the list. */
+ mdp -> heapinfo[mdp -> heapinfo[block].free.next].free.prev
+ = mdp -> heapinfo[block].free.prev;
+ mdp -> heapinfo[mdp -> heapinfo[block].free.prev].free.next
+ = mdp -> heapindex = mdp -> heapinfo[block].free.next;
+ mdp -> heapstats.chunks_free--;
+ }
+
+ mdp -> heapinfo[block].busy.type = 0;
+ mdp -> heapinfo[block].busy.info.size = blocks;
+ mdp -> heapstats.chunks_used++;
+ mdp -> heapstats.bytes_used += blocks * BLOCKSIZE;
+ mdp -> heapstats.bytes_free -= blocks * BLOCKSIZE;
+ }
+
+ return (result);
+}
+
+/* When using this package, provide a version of malloc/realloc/free built
+ on top of it, so that if we use the default sbrk() region we will not
+ collide with another malloc package trying to do the same thing, if
+ the application contains any "hidden" calls to malloc/realloc/free (such
+ as inside a system library). */
+
+PTR
+malloc (size)
+ size_t size;
+{
+ PTR result;
+
+ result = mmalloc ((PTR) NULL, size);
+ return (result);
+}
diff --git a/mmalloc/mmalloc.h b/mmalloc/mmalloc.h
new file mode 100644
index 00000000000..082547ea504
--- /dev/null
+++ b/mmalloc/mmalloc.h
@@ -0,0 +1,62 @@
+#ifndef MMALLOC_H
+#define MMALLOC_H 1
+
+#ifdef HAVE_STDDEF_H
+# include <stddef.h>
+#else
+# include <sys/types.h> /* for size_t */
+# include <stdio.h> /* for NULL */
+#endif
+
+#include "ansidecl.h"
+
+/* Allocate SIZE bytes of memory. */
+
+extern PTR mmalloc PARAMS ((PTR, size_t));
+
+/* Re-allocate the previously allocated block in PTR, making the new block
+ SIZE bytes long. */
+
+extern PTR mrealloc PARAMS ((PTR, PTR, size_t));
+
+/* Allocate NMEMB elements of SIZE bytes each, all initialized to 0. */
+
+extern PTR mcalloc PARAMS ((PTR, size_t, size_t));
+
+/* Free a block allocated by `mmalloc', `mrealloc' or `mcalloc'. */
+
+extern void mfree PARAMS ((PTR, PTR));
+
+/* Allocate SIZE bytes allocated to ALIGNMENT bytes. */
+
+extern PTR mmemalign PARAMS ((PTR, size_t, size_t));
+
+/* Allocate SIZE bytes on a page boundary. */
+
+extern PTR mvalloc PARAMS ((PTR, size_t));
+
+/* Activate a standard collection of debugging hooks. */
+
+extern int mmcheck PARAMS ((PTR, void (*) (void)));
+
+extern int mmcheckf PARAMS ((PTR, void (*) (void), int));
+
+/* Pick up the current statistics. (see FIXME elsewhere) */
+
+extern struct mstats mmstats PARAMS ((PTR));
+
+extern PTR mmalloc_attach PARAMS ((int, PTR));
+
+extern PTR mmalloc_detach PARAMS ((PTR));
+
+extern int mmalloc_setkey PARAMS ((PTR, int, PTR));
+
+extern PTR mmalloc_getkey PARAMS ((PTR, int));
+
+extern int mmalloc_errno PARAMS ((PTR));
+
+extern int mmtrace PARAMS ((void));
+
+extern PTR mmalloc_findbase PARAMS ((int));
+
+#endif /* MMALLOC_H */
diff --git a/mmalloc/mmalloc.texi b/mmalloc/mmalloc.texi
new file mode 100644
index 00000000000..c038f651b3a
--- /dev/null
+++ b/mmalloc/mmalloc.texi
@@ -0,0 +1,258 @@
+\input texinfo @c -*- Texinfo -*-
+@setfilename mmalloc.info
+
+@ifinfo
+@format
+START-INFO-DIR-ENTRY
+* Mmalloc: (mmalloc). The GNU mapped-malloc package.
+END-INFO-DIR-ENTRY
+@end format
+
+This file documents the GNU mmalloc (mapped-malloc) package, written by
+fnf@@cygnus.com, based on GNU malloc written by mike@@ai.mit.edu.
+
+Copyright (C) 1992 Free Software Foundation, Inc.
+
+Permission is granted to make and distribute verbatim copies of
+this manual provided the copyright notice and this permission notice
+are preserved on all copies.
+
+@ignore
+Permission is granted to process this file through Tex and print the
+results, provided the printed document carries copying permission
+notice identical to this one except for the removal of this paragraph
+(this paragraph not being relevant to the printed manual).
+
+@end ignore
+Permission is granted to copy and distribute modified versions of this
+manual under the conditions for verbatim copying, provided also that the
+entire resulting derived work is distributed under the terms of a
+permission notice identical to this one.
+
+Permission is granted to copy and distribute translations of this manual
+into another language, under the above conditions for modified versions.
+@end ifinfo
+@iftex
+@c @finalout
+@setchapternewpage odd
+@settitle MMALLOC, the GNU memory-mapped malloc package
+@titlepage
+@title mmalloc
+@subtitle The GNU memory-mapped malloc package
+@author Fred Fish
+@author Cygnus Support
+@author Mike Haertel
+@author Free Software Foundation
+@page
+
+@tex
+\def\$#1${{#1}} % Kluge: collect RCS revision info without $...$
+\xdef\manvers{\$Revision$} % For use in headers, footers too
+{\parskip=0pt
+\hfill Cygnus Support\par
+\hfill fnf\@cygnus.com\par
+\hfill {\it MMALLOC, the GNU memory-mapped malloc package}, \manvers\par
+\hfill \TeX{}info \texinfoversion\par
+}
+@end tex
+
+@vskip 0pt plus 1filll
+Copyright @copyright{} 1992 Free Software Foundation, Inc.
+
+Permission is granted to make and distribute verbatim copies of
+this manual provided the copyright notice and this permission notice
+are preserved on all copies.
+
+Permission is granted to copy and distribute modified versions of this
+manual under the conditions for verbatim copying, provided also that
+the entire resulting derived work is distributed under the terms of a
+permission notice identical to this one.
+
+Permission is granted to copy and distribute translations of this manual
+into another language, under the above conditions for modified versions.
+@end titlepage
+@end iftex
+
+@ifinfo
+@node Top, Overview, (dir), (dir)
+@top mmalloc
+This file documents the GNU memory-mapped malloc package mmalloc.
+
+@menu
+* Overview:: Overall Description
+* Implementation:: Implementation
+
+ --- The Detailed Node Listing ---
+
+Implementation
+
+* Compatibility:: Backwards Compatibility
+* Functions:: Function Descriptions
+@end menu
+
+@end ifinfo
+
+@node Overview, Implementation, Top, Top
+@chapter Overall Description
+
+This is a heavily modified version of GNU @code{malloc}. It uses
+@code{mmap} as the basic mechanism for obtaining memory from the
+system, rather than @code{sbrk}. This gives it several advantages over the
+more traditional malloc:
+
+@itemize @bullet
+@item
+Several different heaps can be used, each of them growing
+or shinking under control of @code{mmap}, with the @code{mmalloc} functions
+using a specific heap on a call by call basis.
+
+@item
+By using @code{mmap}, it is easy to create heaps which are intended to
+be persistent and exist as a filesystem object after the creating
+process has gone away.
+
+@item
+Because multiple heaps can be managed, data used for a
+specific purpose can be allocated into its own heap, making
+it easier to allow applications to ``dump'' and ``restore'' initialized
+malloc-managed memory regions. For example, the ``unexec'' hack popularized
+by GNU Emacs could potentially go away.
+@end itemize
+
+@node Implementation, , Overview, Top
+@chapter Implementation
+
+The @code{mmalloc} functions contain no internal static state. All
+@code{mmalloc} internal data is allocated in the mapped in region, along
+with the user data that it manages. This allows it to manage multiple
+such regions and to ``pick up where it left off'' when such regions are
+later dynamically mapped back in.
+
+In some sense, malloc has been ``purified'' to contain no internal state
+information and generalized to use multiple memory regions rather than a
+single region managed by @code{sbrk}. However the new routines now need an
+extra parameter which informs @code{mmalloc} which memory region it is dealing
+with (along with other information). This parameter is called the
+@dfn{malloc descriptor}.
+
+The functions initially provided by @code{mmalloc} are:
+
+@example
+void *mmalloc_attach (int fd, void *baseaddr);
+void *mmalloc_detach (void *md);
+int mmalloc_errno (void *md);
+int mmalloc_setkey (void *md, int keynum, void *key);
+void *mmalloc_getkey (void *md, int keynum);
+
+void *mmalloc (void *md, size_t size);
+void *mrealloc (void *md, void *ptr, size_t size);
+void *mvalloc (void *md, size_t size);
+void mfree (void *md, void *ptr);
+@end example
+
+@menu
+* Compatibility:: Backwards Compatibility
+* Functions:: Function Descriptions
+@end menu
+
+@node Compatibility, Functions, Implementation, Implementation
+@section Backwards Compatibility
+
+To allow a single malloc package to be used in a given application,
+provision is made for the traditional @code{malloc}, @code{realloc}, and
+@code{free} functions to be implemented as special cases of the
+@code{mmalloc} functions. In particular, if any of the functions that
+expect malloc descriptors are called with a @code{NULL} pointer rather than a
+valid malloc descriptor, then they default to using an @code{sbrk} managed
+region.
+The @code{mmalloc} package provides compatible @code{malloc}, @code{realloc},
+and @code{free} functions using this mechanism internally.
+Applications can avoid this extra interface layer by simply including the
+following defines:
+
+@example
+#define malloc(size) mmalloc ((void *)0, (size))
+#define realloc(ptr,size) mrealloc ((void *)0, (ptr), (size));
+#define free(ptr) mfree ((void *)0, (ptr))
+@end example
+
+@noindent
+or replace the existing @code{malloc}, @code{realloc}, and @code{free}
+calls with the above patterns if using @code{#define} causes problems.
+
+@node Functions, , Compatibility, Implementation
+@section Function Descriptions
+
+These are the details on the functions that make up the @code{mmalloc}
+package.
+
+@table @code
+@item void *mmalloc_attach (int @var{fd}, void *@var{baseaddr});
+Initialize access to a @code{mmalloc} managed region.
+
+If @var{fd} is a valid file descriptor for an open file, then data for the
+@code{mmalloc} managed region is mapped to that file. Otherwise
+@file{/dev/zero} is used and the data will not exist in any filesystem object.
+
+If the open file corresponding to @var{fd} is from a previous use of
+@code{mmalloc} and passes some basic sanity checks to ensure that it is
+compatible with the current @code{mmalloc} package, then its data is
+mapped in and is immediately accessible at the same addresses in
+the current process as the process that created the file.
+
+If @var{baseaddr} is not @code{NULL}, the mapping is established
+starting at the specified address in the process address space. If
+@var{baseaddr} is @code{NULL}, the @code{mmalloc} package chooses a
+suitable address at which to start the mapped region, which will be the
+value of the previous mapping if opening an existing file which was
+previously built by @code{mmalloc}, or for new files will be a value
+chosen by @code{mmap}.
+
+Specifying @var{baseaddr} provides more control over where the regions
+start and how big they can be before bumping into existing mapped
+regions or future mapped regions.
+
+On success, returns a malloc descriptor which is used in subsequent
+calls to other @code{mmalloc} package functions. It is explicitly
+@samp{void *} (@samp{char *} for systems that don't fully support
+@code{void}) so that users of the package don't have to worry about the
+actual implementation details.
+
+On failure returns @code{NULL}.
+
+@item void *mmalloc_detach (void *@var{md});
+Terminate access to a @code{mmalloc} managed region identified by the
+descriptor @var{md}, by closing the base file and unmapping all memory
+pages associated with the region.
+
+Returns @code{NULL} on success.
+
+Returns the malloc descriptor on failure, which can subsequently
+be used for further action (such as obtaining more information about
+the nature of the failure).
+
+@item void *mmalloc (void *@var{md}, size_t @var{size});
+Given an @code{mmalloc} descriptor @var{md}, allocate additional memory of
+@var{size} bytes in the associated mapped region.
+
+@item *mrealloc (void *@var{md}, void *@var{ptr}, size_t @var{size});
+Given an @code{mmalloc} descriptor @var{md} and a pointer to memory
+previously allocated by @code{mmalloc} in @var{ptr}, reallocate the
+memory to be @var{size} bytes long, possibly moving the existing
+contents of memory if necessary.
+
+@item void *mvalloc (void *@var{md}, size_t @var{size});
+Like @code{mmalloc} but the resulting memory is aligned on a page boundary.
+
+@item void mfree (void *@var{md}, void *@var{ptr});
+Given an @code{mmalloc} descriptor @var{md} and a pointer to memory previously
+allocated by @code{mmalloc} in @var{ptr}, free the previously allocated memory.
+
+@item int mmalloc_errno (void *@var{md});
+Given a @code{mmalloc} descriptor, if the last @code{mmalloc} operation
+failed for some reason due to a system call failure, then
+returns the associated @code{errno}. Returns 0 otherwise.
+(This function is not yet implemented).
+@end table
+
+@bye
diff --git a/mmalloc/mmap-sup.c b/mmalloc/mmap-sup.c
new file mode 100644
index 00000000000..f278789808e
--- /dev/null
+++ b/mmalloc/mmap-sup.c
@@ -0,0 +1,205 @@
+/* Support for an sbrk-like function that uses mmap.
+ Copyright 1992 Free Software Foundation, Inc.
+
+ Contributed by Fred Fish at Cygnus Support. fnf@cygnus.com
+
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+#if defined(HAVE_MMAP)
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+
+#ifndef SEEK_SET
+#define SEEK_SET 0
+#endif
+
+#include "mmprivate.h"
+
+/* Cache the pagesize for the current host machine. Note that if the host
+ does not readily provide a getpagesize() function, we need to emulate it
+ elsewhere, not clutter up this file with lots of kluges to try to figure
+ it out. */
+
+static size_t pagesize;
+extern int getpagesize PARAMS ((void));
+
+#define PAGE_ALIGN(addr) (caddr_t) (((long)(addr) + pagesize - 1) & \
+ ~(pagesize - 1))
+
+/* Get core for the memory region specified by MDP, using SIZE as the
+ amount to either add to or subtract from the existing region. Works
+ like sbrk(), but using mmap(). */
+
+PTR
+__mmalloc_mmap_morecore (mdp, size)
+ struct mdesc *mdp;
+ int size;
+{
+ PTR result = NULL;
+ off_t foffset; /* File offset at which new mapping will start */
+ size_t mapbytes; /* Number of bytes to map */
+ caddr_t moveto; /* Address where we wish to move "break value" to */
+ caddr_t mapto; /* Address we actually mapped to */
+ char buf = 0; /* Single byte to write to extend mapped file */
+
+ if (pagesize == 0)
+ {
+ pagesize = getpagesize ();
+ }
+ if (size == 0)
+ {
+ /* Just return the current "break" value. */
+ result = mdp -> breakval;
+ }
+ else if (size < 0)
+ {
+ /* We are deallocating memory. If the amount requested would cause
+ us to try to deallocate back past the base of the mmap'd region
+ then do nothing, and return NULL. Otherwise, deallocate the
+ memory and return the old break value. */
+ if (mdp -> breakval + size >= mdp -> base)
+ {
+ result = (PTR) mdp -> breakval;
+ mdp -> breakval += size;
+ moveto = PAGE_ALIGN (mdp -> breakval);
+ munmap (moveto, (size_t) (mdp -> top - moveto));
+ mdp -> top = moveto;
+ }
+ }
+ else
+ {
+ /* We are allocating memory. Make sure we have an open file
+ descriptor and then go on to get the memory. */
+ if (mdp -> fd < 0)
+ {
+ result = NULL;
+ }
+ else if (mdp -> breakval + size > mdp -> top)
+ {
+ /* The request would move us past the end of the currently
+ mapped memory, so map in enough more memory to satisfy
+ the request. This means we also have to grow the mapped-to
+ file by an appropriate amount, since mmap cannot be used
+ to extend a file. */
+ moveto = PAGE_ALIGN (mdp -> breakval + size);
+ mapbytes = moveto - mdp -> top;
+ foffset = mdp -> top - mdp -> base;
+ /* FIXME: Test results of lseek() and write() */
+ lseek (mdp -> fd, foffset + mapbytes - 1, SEEK_SET);
+ write (mdp -> fd, &buf, 1);
+ if (mdp -> base == 0)
+ {
+ /* Let mmap pick the map start address */
+ mapto = mmap (0, mapbytes, PROT_READ | PROT_WRITE,
+ MAP_SHARED, mdp -> fd, foffset);
+ if (mapto != (caddr_t) -1)
+ {
+ mdp -> base = mdp -> breakval = mapto;
+ mdp -> top = mdp -> base + mapbytes;
+ result = (PTR) mdp -> breakval;
+ mdp -> breakval += size;
+ }
+ }
+ else
+ {
+ mapto = mmap (mdp -> top, mapbytes, PROT_READ | PROT_WRITE,
+ MAP_SHARED | MAP_FIXED, mdp -> fd, foffset);
+ if (mapto == mdp -> top)
+ {
+ mdp -> top = moveto;
+ result = (PTR) mdp -> breakval;
+ mdp -> breakval += size;
+ }
+ }
+ }
+ else
+ {
+ result = (PTR) mdp -> breakval;
+ mdp -> breakval += size;
+ }
+ }
+ return (result);
+}
+
+PTR
+__mmalloc_remap_core (mdp)
+ struct mdesc *mdp;
+{
+ caddr_t base;
+
+ /* FIXME: Quick hack, needs error checking and other attention. */
+
+ base = mmap (mdp -> base, mdp -> top - mdp -> base,
+ PROT_READ | PROT_WRITE, MAP_SHARED | MAP_FIXED,
+ mdp -> fd, 0);
+ return ((PTR) base);
+}
+
+PTR
+mmalloc_findbase (size)
+ int size;
+{
+ int fd;
+ int flags;
+ caddr_t base = NULL;
+
+#ifdef MAP_ANONYMOUS
+ flags = MAP_SHARED | MAP_ANONYMOUS;
+ fd = -1;
+#else
+#ifdef MAP_FILE
+ flags = MAP_SHARED | MAP_FILE;
+#else
+ flags = MAP_SHARED;
+#endif
+ fd = open ("/dev/zero", O_RDWR);
+ if (fd != -1)
+ {
+ return ((PTR) NULL);
+ }
+#endif
+ base = mmap (0, size, PROT_READ | PROT_WRITE, flags, fd, 0);
+ if (base != (caddr_t) -1)
+ {
+ munmap (base, (size_t) size);
+ }
+ if (fd != -1)
+ {
+ close (fd);
+ }
+ if (base == 0)
+ {
+ /* Don't allow mapping at address zero. We use that value
+ to signal an error return, and besides, it is useful to
+ catch NULL pointers if it is unmapped. Instead start
+ at the next page boundary. */
+ base = (caddr_t) getpagesize ();
+ }
+ else if (base == (caddr_t) -1)
+ {
+ base = NULL;
+ }
+ return ((PTR) base);
+}
+
+#else /* defined(HAVE_MMAP) */
+/* Prevent "empty translation unit" warnings from the idiots at X3J11. */
+static char ansi_c_idiots = 69;
+#endif /* defined(HAVE_MMAP) */
diff --git a/mmalloc/mmcheck.c b/mmalloc/mmcheck.c
new file mode 100644
index 00000000000..48936b3e630
--- /dev/null
+++ b/mmalloc/mmcheck.c
@@ -0,0 +1,223 @@
+/* Standard debugging hooks for `mmalloc'.
+ Copyright 1990, 1991, 1992 Free Software Foundation
+
+ Written May 1989 by Mike Haertel.
+ Heavily modified Mar 1992 by Fred Fish (fnf@cygnus.com)
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.
+
+ The author may be reached (Email) at the address mike@ai.mit.edu,
+ or (US mail) as Mike Haertel c/o Free Software Foundation. */
+
+#include "mmprivate.h"
+
+/* Default function to call when something awful happens. The application
+ can specify an alternate function to be called instead (and probably will
+ want to). */
+
+extern void abort PARAMS ((void));
+
+/* Arbitrary magical numbers. */
+
+#define MAGICWORD (unsigned int) 0xfedabeeb /* Active chunk */
+#define MAGICWORDFREE (unsigned int) 0xdeadbeef /* Inactive chunk */
+#define MAGICBYTE ((char) 0xd7)
+
+/* Each memory allocation is bounded by a header structure and a trailer
+ byte. I.E.
+
+ <size><magicword><user's allocation><magicbyte>
+
+ The pointer returned to the user points to the first byte in the
+ user's allocation area. The magic word can be tested to detect
+ buffer underruns and the magic byte can be tested to detect overruns. */
+
+struct hdr
+ {
+ size_t size; /* Exact size requested by user. */
+ unsigned long int magic; /* Magic number to check header integrity. */
+ };
+
+static void checkhdr PARAMS ((struct mdesc *, CONST struct hdr *));
+static void mfree_check PARAMS ((PTR, PTR));
+static PTR mmalloc_check PARAMS ((PTR, size_t));
+static PTR mrealloc_check PARAMS ((PTR, PTR, size_t));
+
+/* Check the magicword and magicbyte, and if either is corrupted then
+ call the emergency abort function specified for the heap in use. */
+
+static void
+checkhdr (mdp, hdr)
+ struct mdesc *mdp;
+ CONST struct hdr *hdr;
+{
+ if (hdr -> magic != MAGICWORD ||
+ ((char *) &hdr[1])[hdr -> size] != MAGICBYTE)
+ {
+ (*mdp -> abortfunc)();
+ }
+}
+
+static void
+mfree_check (md, ptr)
+ PTR md;
+ PTR ptr;
+{
+ struct hdr *hdr = ((struct hdr *) ptr) - 1;
+ struct mdesc *mdp;
+
+ mdp = MD_TO_MDP (md);
+ checkhdr (mdp, hdr);
+ hdr -> magic = MAGICWORDFREE;
+ mdp -> mfree_hook = NULL;
+ mfree (md, (PTR)hdr);
+ mdp -> mfree_hook = mfree_check;
+}
+
+static PTR
+mmalloc_check (md, size)
+ PTR md;
+ size_t size;
+{
+ struct hdr *hdr;
+ struct mdesc *mdp;
+ size_t nbytes;
+
+ mdp = MD_TO_MDP (md);
+ mdp -> mmalloc_hook = NULL;
+ nbytes = sizeof (struct hdr) + size + 1;
+ hdr = (struct hdr *) mmalloc (md, nbytes);
+ mdp -> mmalloc_hook = mmalloc_check;
+ if (hdr != NULL)
+ {
+ hdr -> size = size;
+ hdr -> magic = MAGICWORD;
+ hdr++;
+ *((char *) hdr + size) = MAGICBYTE;
+ }
+ return ((PTR) hdr);
+}
+
+static PTR
+mrealloc_check (md, ptr, size)
+ PTR md;
+ PTR ptr;
+ size_t size;
+{
+ struct hdr *hdr = ((struct hdr *) ptr) - 1;
+ struct mdesc *mdp;
+ size_t nbytes;
+
+ mdp = MD_TO_MDP (md);
+ checkhdr (mdp, hdr);
+ mdp -> mfree_hook = NULL;
+ mdp -> mmalloc_hook = NULL;
+ mdp -> mrealloc_hook = NULL;
+ nbytes = sizeof (struct hdr) + size + 1;
+ hdr = (struct hdr *) mrealloc (md, (PTR) hdr, nbytes);
+ mdp -> mfree_hook = mfree_check;
+ mdp -> mmalloc_hook = mmalloc_check;
+ mdp -> mrealloc_hook = mrealloc_check;
+ if (hdr != NULL)
+ {
+ hdr -> size = size;
+ hdr++;
+ *((char *) hdr + size) = MAGICBYTE;
+ }
+ return ((PTR) hdr);
+}
+
+/* Turn on default checking for mmalloc/mrealloc/mfree, for the heap specified
+ by MD. If FUNC is non-NULL, it is a pointer to the function to call
+ to abort whenever memory corruption is detected. By default, this is the
+ standard library function abort().
+
+ Note that we disallow installation of initial checking hooks if mmalloc
+ has been called at any time for this particular heap, since if any region
+ that is allocated prior to installation of the hooks is subsequently
+ reallocated or freed after installation of the hooks, it is guaranteed
+ to trigger a memory corruption error. We do this by checking the state
+ of the MMALLOC_INITIALIZED flag. If the FORCE argument is non-zero, this
+ checking is disabled and it is allowed to install the checking hooks at any
+ time. This is useful on systems where the C runtime makes one or more
+ malloc calls before the user code had a chance to call mmcheck or mmcheckf,
+ but never calls free with these values. Thus if we are certain that only
+ values obtained from mallocs after an mmcheck/mmcheckf will ever be passed
+ to free(), we can go ahead and force installation of the useful checking
+ hooks.
+
+ However, we can call this function at any time after the initial call,
+ to update the function pointers to the checking routines and to the
+ user defined corruption handler routine, as long as these function pointers
+ have been previously extablished by the initial call. Note that we
+ do this automatically when remapping a previously used heap, to ensure
+ that the hooks get updated to the correct values, although the corruption
+ handler pointer gets set back to the default. The application can then
+ call mmcheck to use a different corruption handler if desired.
+
+ Returns non-zero if checking is successfully enabled, zero otherwise. */
+
+int
+mmcheckf (md, func, force)
+ PTR md;
+ void (*func) PARAMS ((void));
+ int force;
+{
+ struct mdesc *mdp;
+ int rtnval;
+
+ mdp = MD_TO_MDP (md);
+
+ /* We can safely set or update the abort function at any time, regardless
+ of whether or not we successfully do anything else. */
+
+ mdp -> abortfunc = (func != NULL ? func : abort);
+
+ /* If we haven't yet called mmalloc the first time for this heap, or if we
+ have hooks that were previously installed, then allow the hooks to be
+ initialized or updated. */
+
+ if (force ||
+ !(mdp -> flags & MMALLOC_INITIALIZED) ||
+ (mdp -> mfree_hook != NULL))
+ {
+ mdp -> mfree_hook = mfree_check;
+ mdp -> mmalloc_hook = mmalloc_check;
+ mdp -> mrealloc_hook = mrealloc_check;
+ mdp -> flags |= MMALLOC_MMCHECK_USED;
+ rtnval = 1;
+ }
+ else
+ {
+ rtnval = 0;
+ }
+
+ return (rtnval);
+}
+
+/* This routine is for backwards compatibility only, in case there are
+ still callers to the original mmcheck function. */
+
+int
+mmcheck (md, func)
+ PTR md;
+ void (*func) PARAMS ((void));
+{
+ int rtnval;
+
+ rtnval = mmcheckf (md, func, 0);
+ return (rtnval);
+}
diff --git a/mmalloc/mmemalign.c b/mmalloc/mmemalign.c
new file mode 100644
index 00000000000..3ada02707d7
--- /dev/null
+++ b/mmalloc/mmemalign.c
@@ -0,0 +1,62 @@
+/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+#include "mmprivate.h"
+
+PTR
+mmemalign (md, alignment, size)
+ PTR md;
+ size_t alignment;
+ size_t size;
+{
+ PTR result;
+ unsigned long int adj;
+ struct alignlist *l;
+ struct mdesc *mdp;
+
+ if ((result = mmalloc (md, size + alignment - 1)) != NULL)
+ {
+ adj = RESIDUAL (result, alignment);
+ if (adj != 0)
+ {
+ mdp = MD_TO_MDP (md);
+ for (l = mdp -> aligned_blocks; l != NULL; l = l -> next)
+ {
+ if (l -> aligned == NULL)
+ {
+ /* This slot is free. Use it. */
+ break;
+ }
+ }
+ if (l == NULL)
+ {
+ l = (struct alignlist *) mmalloc (md, sizeof (struct alignlist));
+ if (l == NULL)
+ {
+ mfree (md, result);
+ return (NULL);
+ }
+ l -> next = mdp -> aligned_blocks;
+ mdp -> aligned_blocks = l;
+ }
+ l -> exact = result;
+ result = l -> aligned = (char *) result + alignment - adj;
+ }
+ }
+ return (result);
+}
diff --git a/mmalloc/mmprivate.h b/mmalloc/mmprivate.h
new file mode 100644
index 00000000000..457626293b1
--- /dev/null
+++ b/mmalloc/mmprivate.h
@@ -0,0 +1,343 @@
+/* Declarations for `mmalloc' and friends.
+ Copyright 1990, 1991, 1992 Free Software Foundation
+
+ Written May 1989 by Mike Haertel.
+ Heavily modified Mar 1992 by Fred Fish. (fnf@cygnus.com)
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.
+
+ The author may be reached (Email) at the address mike@ai.mit.edu,
+ or (US mail) as Mike Haertel c/o Free Software Foundation. */
+
+
+#ifndef __MMPRIVATE_H
+#define __MMPRIVATE_H 1
+
+#include "mmalloc.h"
+
+#ifdef HAVE_LIMITS_H
+# include <limits.h>
+#else
+# ifndef CHAR_BIT
+# define CHAR_BIT 8
+# endif
+#endif
+
+#ifndef MIN
+# define MIN(A, B) ((A) < (B) ? (A) : (B))
+#endif
+
+#define MMALLOC_MAGIC "mmalloc" /* Mapped file magic number */
+#define MMALLOC_MAGIC_SIZE 8 /* Size of magic number buf */
+#define MMALLOC_VERSION 1 /* Current mmalloc version */
+#define MMALLOC_KEYS 16 /* Keys for application use */
+
+/* The allocator divides the heap into blocks of fixed size; large
+ requests receive one or more whole blocks, and small requests
+ receive a fragment of a block. Fragment sizes are powers of two,
+ and all fragments of a block are the same size. When all the
+ fragments in a block have been freed, the block itself is freed. */
+
+#define INT_BIT (CHAR_BIT * sizeof(int))
+#define BLOCKLOG (INT_BIT > 16 ? 12 : 9)
+#define BLOCKSIZE ((unsigned int) 1 << BLOCKLOG)
+#define BLOCKIFY(SIZE) (((SIZE) + BLOCKSIZE - 1) / BLOCKSIZE)
+
+/* The difference between two pointers is a signed int. On machines where
+ the data addresses have the high bit set, we need to ensure that the
+ difference becomes an unsigned int when we are using the address as an
+ integral value. In addition, when using with the '%' operator, the
+ sign of the result is machine dependent for negative values, so force
+ it to be treated as an unsigned int. */
+
+#define ADDR2UINT(addr) ((unsigned int) ((char *) (addr) - (char *) NULL))
+#define RESIDUAL(addr,bsize) ((unsigned int) (ADDR2UINT (addr) % (bsize)))
+
+/* Determine the amount of memory spanned by the initial heap table
+ (not an absolute limit). */
+
+#define HEAP (INT_BIT > 16 ? 4194304 : 65536)
+
+/* Number of contiguous free blocks allowed to build up at the end of
+ memory before they will be returned to the system. */
+
+#define FINAL_FREE_BLOCKS 8
+
+/* Where to start searching the free list when looking for new memory.
+ The two possible values are 0 and heapindex. Starting at 0 seems
+ to reduce total memory usage, while starting at heapindex seems to
+ run faster. */
+
+#define MALLOC_SEARCH_START mdp -> heapindex
+
+/* Address to block number and vice versa. */
+
+#define BLOCK(A) (((char *) (A) - mdp -> heapbase) / BLOCKSIZE + 1)
+
+#define ADDRESS(B) ((PTR) (((B) - 1) * BLOCKSIZE + mdp -> heapbase))
+
+/* Data structure giving per-block information. */
+
+typedef union
+ {
+ /* Heap information for a busy block. */
+ struct
+ {
+ /* Zero for a large block, or positive giving the
+ logarithm to the base two of the fragment size. */
+ int type;
+ union
+ {
+ struct
+ {
+ size_t nfree; /* Free fragments in a fragmented block. */
+ size_t first; /* First free fragment of the block. */
+ } frag;
+ /* Size (in blocks) of a large cluster. */
+ size_t size;
+ } info;
+ } busy;
+ /* Heap information for a free block (that may be the first of
+ a free cluster). */
+ struct
+ {
+ size_t size; /* Size (in blocks) of a free cluster. */
+ size_t next; /* Index of next free cluster. */
+ size_t prev; /* Index of previous free cluster. */
+ } free;
+ } malloc_info;
+
+/* List of blocks allocated with `mmemalign' (or `mvalloc'). */
+
+struct alignlist
+ {
+ struct alignlist *next;
+ PTR aligned; /* The address that mmemaligned returned. */
+ PTR exact; /* The address that malloc returned. */
+ };
+
+/* Doubly linked lists of free fragments. */
+
+struct list
+ {
+ struct list *next;
+ struct list *prev;
+ };
+
+/* Statistics available to the user.
+ FIXME: By design, the internals of the malloc package are no longer
+ exported to the user via an include file, so access to this data needs
+ to be via some other mechanism, such as mmstat_<something> where the
+ return value is the <something> the user is interested in. */
+
+struct mstats
+ {
+ size_t bytes_total; /* Total size of the heap. */
+ size_t chunks_used; /* Chunks allocated by the user. */
+ size_t bytes_used; /* Byte total of user-allocated chunks. */
+ size_t chunks_free; /* Chunks in the free list. */
+ size_t bytes_free; /* Byte total of chunks in the free list. */
+ };
+
+/* Internal structure that defines the format of the malloc-descriptor.
+ This gets written to the base address of the region that mmalloc is
+ managing, and thus also becomes the file header for the mapped file,
+ if such a file exists. */
+
+struct mdesc
+{
+ /* The "magic number" for an mmalloc file. */
+
+ char magic[MMALLOC_MAGIC_SIZE];
+
+ /* The size in bytes of this structure, used as a sanity check when reusing
+ a previously created mapped file. */
+
+ unsigned int headersize;
+
+ /* The version number of the mmalloc package that created this file. */
+
+ unsigned char version;
+
+ /* Some flag bits to keep track of various internal things. */
+
+ unsigned int flags;
+
+ /* If a system call made by the mmalloc package fails, the errno is
+ preserved for future examination. */
+
+ int saved_errno;
+
+ /* Pointer to the function that is used to get more core, or return core
+ to the system, for requests using this malloc descriptor. For memory
+ mapped regions, this is the mmap() based routine. There may also be
+ a single malloc descriptor that points to an sbrk() based routine
+ for systems without mmap() or for applications that call the mmalloc()
+ package with a NULL malloc descriptor.
+
+ FIXME: For mapped regions shared by more than one process, this
+ needs to be maintained on a per-process basis. */
+
+ PTR (*morecore) PARAMS ((struct mdesc *, int));
+
+ /* Pointer to the function that causes an abort when the memory checking
+ features are activated. By default this is set to abort(), but can
+ be set to another function by the application using mmalloc().
+
+ FIXME: For mapped regions shared by more than one process, this
+ needs to be maintained on a per-process basis. */
+
+ void (*abortfunc) PARAMS ((void));
+
+ /* Debugging hook for free.
+
+ FIXME: For mapped regions shared by more than one process, this
+ needs to be maintained on a per-process basis. */
+
+ void (*mfree_hook) PARAMS ((PTR, PTR));
+
+ /* Debugging hook for `malloc'.
+
+ FIXME: For mapped regions shared by more than one process, this
+ needs to be maintained on a per-process basis. */
+
+ PTR (*mmalloc_hook) PARAMS ((PTR, size_t));
+
+ /* Debugging hook for realloc.
+
+ FIXME: For mapped regions shared by more than one process, this
+ needs to be maintained on a per-process basis. */
+
+ PTR (*mrealloc_hook) PARAMS ((PTR, PTR, size_t));
+
+ /* Number of info entries. */
+
+ size_t heapsize;
+
+ /* Pointer to first block of the heap (base of the first block). */
+
+ char *heapbase;
+
+ /* Current search index for the heap table. */
+ /* Search index in the info table. */
+
+ size_t heapindex;
+
+ /* Limit of valid info table indices. */
+
+ size_t heaplimit;
+
+ /* Block information table.
+ Allocated with malign/__mmalloc_free (not mmalloc/mfree). */
+ /* Table indexed by block number giving per-block information. */
+
+ malloc_info *heapinfo;
+
+ /* Instrumentation. */
+
+ struct mstats heapstats;
+
+ /* Free list headers for each fragment size. */
+ /* Free lists for each fragment size. */
+
+ struct list fraghead[BLOCKLOG];
+
+ /* List of blocks allocated by memalign. */
+
+ struct alignlist *aligned_blocks;
+
+ /* The base address of the memory region for this malloc heap. This
+ is the location where the bookkeeping data for mmap and for malloc
+ begins. */
+
+ char *base;
+
+ /* The current location in the memory region for this malloc heap which
+ represents the end of memory in use. */
+
+ char *breakval;
+
+ /* The end of the current memory region for this malloc heap. This is
+ the first location past the end of mapped memory. */
+
+ char *top;
+
+ /* Open file descriptor for the file to which this malloc heap is mapped.
+ This will always be a valid file descriptor, since /dev/zero is used
+ by default if no open file is supplied by the client. Also note that
+ it may change each time the region is mapped and unmapped. */
+
+ int fd;
+
+ /* An array of keys to data within the mapped region, for use by the
+ application. */
+
+ PTR keys[MMALLOC_KEYS];
+
+};
+
+/* Bits to look at in the malloc descriptor flags word */
+
+#define MMALLOC_DEVZERO (1 << 0) /* Have mapped to /dev/zero */
+#define MMALLOC_INITIALIZED (1 << 1) /* Initialized mmalloc */
+#define MMALLOC_MMCHECK_USED (1 << 2) /* mmcheckf() called already */
+
+/* Internal version of `mfree' used in `morecore'. */
+
+extern void __mmalloc_free PARAMS ((struct mdesc *, PTR));
+
+/* Hooks for debugging versions. */
+
+extern void (*__mfree_hook) PARAMS ((PTR, PTR));
+extern PTR (*__mmalloc_hook) PARAMS ((PTR, size_t));
+extern PTR (*__mrealloc_hook) PARAMS ((PTR, PTR, size_t));
+
+/* A default malloc descriptor for the single sbrk() managed region. */
+
+extern struct mdesc *__mmalloc_default_mdp;
+
+/* Initialize the first use of the default malloc descriptor, which uses
+ an sbrk() region. */
+
+extern struct mdesc *__mmalloc_sbrk_init PARAMS ((void));
+
+/* Grow or shrink a contiguous mapped region using mmap().
+ Works much like sbrk() */
+
+#if defined(HAVE_MMAP)
+
+extern PTR __mmalloc_mmap_morecore PARAMS ((struct mdesc *, int));
+
+#endif
+
+/* Remap a mmalloc region that was previously mapped. */
+
+extern PTR __mmalloc_remap_core PARAMS ((struct mdesc *));
+
+/* Macro to convert from a user supplied malloc descriptor to pointer to the
+ internal malloc descriptor. If the user supplied descriptor is NULL, then
+ use the default internal version, initializing it if necessary. Otherwise
+ just cast the user supplied version (which is void *) to the proper type
+ (struct mdesc *). */
+
+#define MD_TO_MDP(md) \
+ ((md) == NULL \
+ ? (__mmalloc_default_mdp == NULL \
+ ? __mmalloc_sbrk_init () \
+ : __mmalloc_default_mdp) \
+ : (struct mdesc *) (md))
+
+#endif /* __MMPRIVATE_H */
diff --git a/mmalloc/mmstats.c b/mmalloc/mmstats.c
new file mode 100644
index 00000000000..ed17323ee5f
--- /dev/null
+++ b/mmalloc/mmstats.c
@@ -0,0 +1,46 @@
+/* Access the statistics maintained by `mmalloc'.
+ Copyright 1990, 1991, 1992 Free Software Foundation
+
+ Written May 1989 by Mike Haertel.
+ Modified Mar 1992 by Fred Fish. (fnf@cygnus.com)
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.
+
+ The author may be reached (Email) at the address mike@ai.mit.edu,
+ or (US mail) as Mike Haertel c/o Free Software Foundation. */
+
+#include "mmprivate.h"
+
+/* FIXME: See the comment in mmprivate.h where struct mstats is defined.
+ None of the internal mmalloc structures should be externally visible
+ outside the library. */
+
+struct mstats
+mmstats (md)
+ PTR md;
+{
+ struct mstats result;
+ struct mdesc *mdp;
+
+ mdp = MD_TO_MDP (md);
+ result.bytes_total =
+ (char *) mdp -> morecore (mdp, 0) - mdp -> heapbase;
+ result.chunks_used = mdp -> heapstats.chunks_used;
+ result.bytes_used = mdp -> heapstats.bytes_used;
+ result.chunks_free = mdp -> heapstats.chunks_free;
+ result.bytes_free = mdp -> heapstats.bytes_free;
+ return (result);
+}
diff --git a/mmalloc/mmtrace.awk b/mmalloc/mmtrace.awk
new file mode 100644
index 00000000000..d7689cec3ff
--- /dev/null
+++ b/mmalloc/mmtrace.awk
@@ -0,0 +1,36 @@
+#
+# Awk program to analyze mtrace.c output.
+#
+$1 == "+" { if (allocated[$2] != "")
+ print "+", $2, "Alloc", NR, "duplicate:", allocated[$2];
+ else
+ allocated[$2] = $3;
+ }
+$1 == "-" { if (allocated[$2] != "") {
+ allocated[$2] = "";
+ if (allocated[$2] != "")
+ print "DELETE FAILED", $2, allocated[$2];
+ } else
+ print "-", $2, "Free", NR, "was never alloc'd";
+ }
+$1 == "<" { if (allocated[$2] != "")
+ allocated[$2] = "";
+ else
+ print "-", $2, "Realloc", NR, "was never alloc'd";
+ }
+$1 == ">" { if (allocated[$2] != "")
+ print "+", $2, "Realloc", NR, "duplicate:", allocated[$2];
+ else
+ allocated[$2] = $3;
+ }
+
+# Ignore "= Start"
+$1 == "=" { }
+# Ignore failed realloc attempts for now
+$1 == "!" { }
+
+
+END { for (x in allocated)
+ if (allocated[x] != "")
+ print "+", x, allocated[x];
+ }
diff --git a/mmalloc/mmtrace.c b/mmalloc/mmtrace.c
new file mode 100644
index 00000000000..563c860aff0
--- /dev/null
+++ b/mmalloc/mmtrace.c
@@ -0,0 +1,171 @@
+/* More debugging hooks for `mmalloc'.
+ Copyright 1991, 1992, 1994 Free Software Foundation
+
+ Written April 2, 1991 by John Gilmore of Cygnus Support
+ Based on mcheck.c by Mike Haertel.
+ Modified Mar 1992 by Fred Fish. (fnf@cygnus.com)
+
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+#include <stdio.h>
+#include "mmprivate.h"
+
+static void tr_break PARAMS ((void));
+static void tr_freehook PARAMS ((PTR, PTR));
+static PTR tr_mallochook PARAMS ((PTR, size_t));
+static PTR tr_reallochook PARAMS ((PTR, PTR, size_t));
+
+#ifndef __GNU_LIBRARY__
+extern char *getenv ();
+#endif
+
+static FILE *mallstream;
+
+#if 0 /* FIXME: Disabled for now. */
+static char mallenv[] = "MALLOC_TRACE";
+static char mallbuf[BUFSIZ]; /* Buffer for the output. */
+#endif
+
+/* Address to breakpoint on accesses to... */
+static PTR mallwatch;
+
+/* Old hook values. */
+
+static void (*old_mfree_hook) PARAMS ((PTR, PTR));
+static PTR (*old_mmalloc_hook) PARAMS ((PTR, size_t));
+static PTR (*old_mrealloc_hook) PARAMS ((PTR, PTR, size_t));
+
+/* This function is called when the block being alloc'd, realloc'd, or
+ freed has an address matching the variable "mallwatch". In a debugger,
+ set "mallwatch" to the address of interest, then put a breakpoint on
+ tr_break. */
+
+static void
+tr_break ()
+{
+}
+
+static void
+tr_freehook (md, ptr)
+ PTR md;
+ PTR ptr;
+{
+ struct mdesc *mdp;
+
+ mdp = MD_TO_MDP (md);
+ /* Be sure to print it first. */
+ fprintf (mallstream, "- %08lx\n", (unsigned long) ptr);
+ if (ptr == mallwatch)
+ tr_break ();
+ mdp -> mfree_hook = old_mfree_hook;
+ mfree (md, ptr);
+ mdp -> mfree_hook = tr_freehook;
+}
+
+static PTR
+tr_mallochook (md, size)
+ PTR md;
+ size_t size;
+{
+ PTR hdr;
+ struct mdesc *mdp;
+
+ mdp = MD_TO_MDP (md);
+ mdp -> mmalloc_hook = old_mmalloc_hook;
+ hdr = (PTR) mmalloc (md, size);
+ mdp -> mmalloc_hook = tr_mallochook;
+
+ /* We could be printing a NULL here; that's OK. */
+ fprintf (mallstream, "+ %08lx %x\n", (unsigned long) hdr, size);
+
+ if (hdr == mallwatch)
+ tr_break ();
+
+ return (hdr);
+}
+
+static PTR
+tr_reallochook (md, ptr, size)
+ PTR md;
+ PTR ptr;
+ size_t size;
+{
+ PTR hdr;
+ struct mdesc *mdp;
+
+ mdp = MD_TO_MDP (md);
+
+ if (ptr == mallwatch)
+ tr_break ();
+
+ mdp -> mfree_hook = old_mfree_hook;
+ mdp -> mmalloc_hook = old_mmalloc_hook;
+ mdp -> mrealloc_hook = old_mrealloc_hook;
+ hdr = (PTR) mrealloc (md, ptr, size);
+ mdp -> mfree_hook = tr_freehook;
+ mdp -> mmalloc_hook = tr_mallochook;
+ mdp -> mrealloc_hook = tr_reallochook;
+ if (hdr == NULL)
+ /* Failed realloc. */
+ fprintf (mallstream, "! %08lx %x\n", (unsigned long) ptr, size);
+ else
+ fprintf (mallstream, "< %08lx\n> %08lx %x\n", (unsigned long) ptr,
+ (unsigned long) hdr, size);
+
+ if (hdr == mallwatch)
+ tr_break ();
+
+ return hdr;
+}
+
+/* We enable tracing if either the environment variable MALLOC_TRACE
+ is set, or if the variable mallwatch has been patched to an address
+ that the debugging user wants us to stop on. When patching mallwatch,
+ don't forget to set a breakpoint on tr_break! */
+
+int
+mmtrace ()
+{
+#if 0 /* FIXME! This is disabled for now until we figure out how to
+ maintain a stack of hooks per heap, since we might have other
+ hooks (such as set by mmcheck/mmcheckf) active also. */
+ char *mallfile;
+
+ mallfile = getenv (mallenv);
+ if (mallfile != NULL || mallwatch != NULL)
+ {
+ mallstream = fopen (mallfile != NULL ? mallfile : "/dev/null", "w");
+ if (mallstream != NULL)
+ {
+ /* Be sure it doesn't mmalloc its buffer! */
+ setbuf (mallstream, mallbuf);
+ fprintf (mallstream, "= Start\n");
+ old_mfree_hook = mdp -> mfree_hook;
+ mdp -> mfree_hook = tr_freehook;
+ old_mmalloc_hook = mdp -> mmalloc_hook;
+ mdp -> mmalloc_hook = tr_mallochook;
+ old_mrealloc_hook = mdp -> mrealloc_hook;
+ mdp -> mrealloc_hook = tr_reallochook;
+ }
+ }
+
+#endif /* 0 */
+
+ return (1);
+}
+
diff --git a/mmalloc/mrealloc.c b/mmalloc/mrealloc.c
new file mode 100644
index 00000000000..e2004aaf47b
--- /dev/null
+++ b/mmalloc/mrealloc.c
@@ -0,0 +1,163 @@
+/* Change the size of a block allocated by `mmalloc'.
+ Copyright 1990, 1991 Free Software Foundation
+ Written May 1989 by Mike Haertel.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.
+
+ The author may be reached (Email) at the address mike@ai.mit.edu,
+ or (US mail) as Mike Haertel c/o Free Software Foundation. */
+
+#include <string.h> /* Prototypes for memcpy, memmove, memset, etc */
+
+#include "mmprivate.h"
+
+/* Resize the given region to the new size, returning a pointer
+ to the (possibly moved) region. This is optimized for speed;
+ some benchmarks seem to indicate that greater compactness is
+ achieved by unconditionally allocating and copying to a
+ new region. This module has incestuous knowledge of the
+ internals of both mfree and mmalloc. */
+
+PTR
+mrealloc (md, ptr, size)
+ PTR md;
+ PTR ptr;
+ size_t size;
+{
+ struct mdesc *mdp;
+ PTR result;
+ int type;
+ size_t block, blocks, oldlimit;
+
+ if (size == 0)
+ {
+ mfree (md, ptr);
+ return (mmalloc (md, 0));
+ }
+ else if (ptr == NULL)
+ {
+ return (mmalloc (md, size));
+ }
+
+ mdp = MD_TO_MDP (md);
+
+ if (mdp -> mrealloc_hook != NULL)
+ {
+ return ((*mdp -> mrealloc_hook) (md, ptr, size));
+ }
+
+ block = BLOCK (ptr);
+
+ type = mdp -> heapinfo[block].busy.type;
+ switch (type)
+ {
+ case 0:
+ /* Maybe reallocate a large block to a small fragment. */
+ if (size <= BLOCKSIZE / 2)
+ {
+ result = mmalloc (md, size);
+ if (result != NULL)
+ {
+ memcpy (result, ptr, size);
+ mfree (md, ptr);
+ return (result);
+ }
+ }
+
+ /* The new size is a large allocation as well;
+ see if we can hold it in place. */
+ blocks = BLOCKIFY (size);
+ if (blocks < mdp -> heapinfo[block].busy.info.size)
+ {
+ /* The new size is smaller; return excess memory to the free list. */
+ mdp -> heapinfo[block + blocks].busy.type = 0;
+ mdp -> heapinfo[block + blocks].busy.info.size
+ = mdp -> heapinfo[block].busy.info.size - blocks;
+ mdp -> heapinfo[block].busy.info.size = blocks;
+ mfree (md, ADDRESS (block + blocks));
+ result = ptr;
+ }
+ else if (blocks == mdp -> heapinfo[block].busy.info.size)
+ {
+ /* No size change necessary. */
+ result = ptr;
+ }
+ else
+ {
+ /* Won't fit, so allocate a new region that will.
+ Free the old region first in case there is sufficient
+ adjacent free space to grow without moving. */
+ blocks = mdp -> heapinfo[block].busy.info.size;
+ /* Prevent free from actually returning memory to the system. */
+ oldlimit = mdp -> heaplimit;
+ mdp -> heaplimit = 0;
+ mfree (md, ptr);
+ mdp -> heaplimit = oldlimit;
+ result = mmalloc (md, size);
+ if (result == NULL)
+ {
+ mmalloc (md, blocks * BLOCKSIZE);
+ return (NULL);
+ }
+ if (ptr != result)
+ {
+ memmove (result, ptr, blocks * BLOCKSIZE);
+ }
+ }
+ break;
+
+ default:
+ /* Old size is a fragment; type is logarithm
+ to base two of the fragment size. */
+ if (size > (size_t) (1 << (type - 1)) && size <= (size_t) (1 << type))
+ {
+ /* The new size is the same kind of fragment. */
+ result = ptr;
+ }
+ else
+ {
+ /* The new size is different; allocate a new space,
+ and copy the lesser of the new size and the old. */
+ result = mmalloc (md, size);
+ if (result == NULL)
+ {
+ return (NULL);
+ }
+ memcpy (result, ptr, MIN (size, (size_t) 1 << type));
+ mfree (md, ptr);
+ }
+ break;
+ }
+
+ return (result);
+}
+
+/* When using this package, provide a version of malloc/realloc/free built
+ on top of it, so that if we use the default sbrk() region we will not
+ collide with another malloc package trying to do the same thing, if
+ the application contains any "hidden" calls to malloc/realloc/free (such
+ as inside a system library). */
+
+PTR
+realloc (ptr, size)
+ PTR ptr;
+ size_t size;
+{
+ PTR result;
+
+ result = mrealloc ((PTR) NULL, ptr, size);
+ return (result);
+}
diff --git a/mmalloc/mvalloc.c b/mmalloc/mvalloc.c
new file mode 100644
index 00000000000..7acef67e84f
--- /dev/null
+++ b/mmalloc/mvalloc.c
@@ -0,0 +1,48 @@
+/* Allocate memory on a page boundary.
+ Copyright (C) 1991 Free Software Foundation, Inc.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+#include "mmprivate.h"
+
+/* Cache the pagesize for the current host machine. Note that if the host
+ does not readily provide a getpagesize() function, we need to emulate it
+ elsewhere, not clutter up this file with lots of kluges to try to figure
+ it out. */
+
+static size_t cache_pagesize;
+extern int getpagesize PARAMS ((void));
+
+PTR
+mvalloc (md, size)
+ PTR md;
+ size_t size;
+{
+ if (cache_pagesize == 0)
+ {
+ cache_pagesize = getpagesize ();
+ }
+
+ return (mmemalign (md, cache_pagesize, size));
+}
+
+
+PTR
+valloc (size)
+ size_t size;
+{
+ return mvalloc ((PTR) NULL, size);
+}
diff --git a/mmalloc/sbrk-sup.c b/mmalloc/sbrk-sup.c
new file mode 100644
index 00000000000..8893175ee26
--- /dev/null
+++ b/mmalloc/sbrk-sup.c
@@ -0,0 +1,97 @@
+/* Support for sbrk() regions.
+ Copyright 1992 Free Software Foundation, Inc.
+ Contributed by Fred Fish at Cygnus Support. fnf@cygnus.com
+
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+#include <string.h> /* Prototypes for memcpy, memmove, memset, etc */
+
+#include "mmprivate.h"
+
+static PTR sbrk_morecore PARAMS ((struct mdesc *, int));
+extern PTR sbrk PARAMS ((int));
+
+/* The mmalloc() package can use a single implicit malloc descriptor
+ for mmalloc/mrealloc/mfree operations which do not supply an explicit
+ descriptor. For these operations, sbrk() is used to obtain more core
+ from the system, or return core. This allows mmalloc() to provide
+ backwards compatibility with the non-mmap'd version. */
+
+struct mdesc *__mmalloc_default_mdp;
+
+/* Use sbrk() to get more core. */
+
+static PTR
+sbrk_morecore (mdp, size)
+ struct mdesc *mdp;
+ int size;
+{
+ PTR result;
+
+ if ((result = sbrk (size)) == (PTR) -1)
+ {
+ result = NULL;
+ }
+ else
+ {
+ mdp -> breakval += size;
+ mdp -> top += size;
+ }
+ return (result);
+}
+
+/* Initialize the default malloc descriptor if this is the first time
+ a request has been made to use the default sbrk'd region.
+
+ Since no alignment guarantees are made about the initial value returned
+ by sbrk, test the initial value and (if necessary) sbrk enough additional
+ memory to start off with alignment to BLOCKSIZE. We actually only need
+ it aligned to an alignment suitable for any object, so this is overkill.
+ But at most it wastes just part of one BLOCKSIZE chunk of memory and
+ minimizes portability problems by avoiding us having to figure out
+ what the actual minimal alignment is. The rest of the malloc code
+ avoids this as well, by always aligning to the minimum of the requested
+ size rounded up to a power of two, or to BLOCKSIZE.
+
+ Note that we are going to use some memory starting at this initial sbrk
+ address for the sbrk region malloc descriptor, which is a struct, so the
+ base address must be suitably aligned. */
+
+struct mdesc *
+__mmalloc_sbrk_init ()
+{
+ PTR base;
+ unsigned int adj;
+
+ base = sbrk (0);
+ adj = RESIDUAL (base, BLOCKSIZE);
+ if (adj != 0)
+ {
+ sbrk (BLOCKSIZE - adj);
+ base = sbrk (0);
+ }
+ __mmalloc_default_mdp = (struct mdesc *) sbrk (sizeof (struct mdesc));
+ memset ((char *) __mmalloc_default_mdp, 0, sizeof (struct mdesc));
+ __mmalloc_default_mdp -> morecore = sbrk_morecore;
+ __mmalloc_default_mdp -> base = base;
+ __mmalloc_default_mdp -> breakval = __mmalloc_default_mdp -> top = sbrk (0);
+ __mmalloc_default_mdp -> fd = -1;
+ return (__mmalloc_default_mdp);
+}
+
+