From 482dd2f67b3254c4b72ecce7d903f9f25f9d9dda Mon Sep 17 00:00:00 2001 From: Daniel Jacobowitz Date: Thu, 4 May 2006 15:12:00 +0000 Subject: [PATCH] 2006-05-04 Steve Ellcey * blt, iwidgets, mmalloc: Remove directories. --- ChangeLog | 4 + mmalloc/COPYING.LIB | 481 -------------- mmalloc/ChangeLog | 491 -------------- mmalloc/MAINTAINERS | 5 - mmalloc/Makefile.in | 247 ------- mmalloc/TODO | 17 - mmalloc/acinclude.m4 | 1 - mmalloc/aclocal.m4 | 14 - mmalloc/attach.c | 221 ------- mmalloc/configure | 1747 -------------------------------------------------- mmalloc/configure.in | 35 - mmalloc/detach.c | 71 -- mmalloc/keys.c | 66 -- mmalloc/mcalloc.c | 54 -- mmalloc/mfree.c | 247 ------- mmalloc/mm.c | 40 -- mmalloc/mmalloc.c | 337 ---------- mmalloc/mmalloc.h | 62 -- mmalloc/mmalloc.texi | 258 -------- mmalloc/mmap-sup.c | 220 ------- mmalloc/mmcheck.c | 223 ------- mmalloc/mmemalign.c | 62 -- mmalloc/mmprivate.h | 343 ---------- mmalloc/mmstats.c | 46 -- mmalloc/mmtrace.awk | 36 -- mmalloc/mmtrace.c | 171 ----- mmalloc/mrealloc.c | 163 ----- mmalloc/mvalloc.c | 50 -- mmalloc/sbrk-sup.c | 102 --- 29 files changed, 4 insertions(+), 5810 deletions(-) delete mode 100644 mmalloc/COPYING.LIB delete mode 100644 mmalloc/ChangeLog delete mode 100644 mmalloc/MAINTAINERS delete mode 100644 mmalloc/Makefile.in delete mode 100644 mmalloc/TODO delete mode 100644 mmalloc/acinclude.m4 delete mode 100644 mmalloc/aclocal.m4 delete mode 100644 mmalloc/attach.c delete mode 100755 mmalloc/configure delete mode 100644 mmalloc/configure.in delete mode 100644 mmalloc/detach.c delete mode 100644 mmalloc/keys.c delete mode 100644 mmalloc/mcalloc.c delete mode 100644 mmalloc/mfree.c delete mode 100644 mmalloc/mm.c delete mode 100644 mmalloc/mmalloc.c delete mode 100644 mmalloc/mmalloc.h delete mode 100644 mmalloc/mmalloc.texi delete mode 100644 mmalloc/mmap-sup.c delete mode 100644 mmalloc/mmcheck.c delete mode 100644 mmalloc/mmemalign.c delete mode 100644 mmalloc/mmprivate.h delete mode 100644 mmalloc/mmstats.c delete mode 100644 mmalloc/mmtrace.awk delete mode 100644 mmalloc/mmtrace.c delete mode 100644 mmalloc/mrealloc.c delete mode 100644 mmalloc/mvalloc.c delete mode 100644 mmalloc/sbrk-sup.c diff --git a/ChangeLog b/ChangeLog index 98c4696..e4f7ada 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,7 @@ +2006-05-04 Steve Ellcey + + * blt, iwidgets, mmalloc: Remove directories. + 2006-05-01 DJ Delorie * configure.in: Restore CFLAGS if GMP isn't present. diff --git a/mmalloc/COPYING.LIB b/mmalloc/COPYING.LIB deleted file mode 100644 index eb685a5..0000000 --- a/mmalloc/COPYING.LIB +++ /dev/null @@ -1,481 +0,0 @@ - GNU LIBRARY GENERAL PUBLIC LICENSE - Version 2, June 1991 - - Copyright (C) 1991 Free Software Foundation, Inc. - 675 Mass Ave, Cambridge, MA 02139, USA - Everyone is permitted to copy and distribute verbatim copies - of this license document, but changing it is not allowed. - -[This is the first released version of the library GPL. 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Support DESTDIR. - (install): Likewise. - -2002-11-28 Elena Zannoni - - * Makefile.in (install): Move install-info to here... - (all): ...from here. - -2002-11-26 Elena Zannoni - - * Makefile.in (INFO_DEPS): Define. - (all): Add install-info to the rule. - (info): Unse INFO_DEPS. - (install-info): Rewrite. - (uninstall-info): New. - (uninstall): New. - -2002-04-07 Andrew Cagney - - From 2002-03-05 Scott Pakin - * mmap-sup.c (MAP_PRIVATE_OR_SHARED): Define. - (__mmalloc_mmap_morecore): Use. - (__mmalloc_remap_core): Use. - -2000-05-17 Eli Zaretskii - - * Makefile.in (install-info): Make sure $(infodir) exists. Run - install-info program on the installed Info files. - -2000-03-20 Eli Zaretskii - - * Makefile.in (install): Append "n", not ".n" to libmmalloc.a, - since the latter loses on DOS 8+3 filesystems. - -Mon Feb 28 10:33:51 2000 Andrew Cagney - - * MAINTAINERS: New file. - -2000-02-18 Frank Ch. Eigler - - From Jason "crash" Molenda : - * configure.in: Check for getpagesize declaration. - * mvmalloc.c, mmap-sup.c: Conditionally declare getpagesize. - * configure: Regenerated. - -Fri Feb 18 11:42:21 2000 Andrew Cagney - - * configure.in: Check for . - * configure: Regenerate. - - From 2000-02-17 RodneyBrown@pmsc.com: - * mm.c, attach.c, mmap-sup.c, sbrk-sup.c: Include for - sbrk and lseek declarations. Update copyright. - -2000-02-04 Kevin Buettner (kevinb@cygnus.com) - - * acinclude.m4, aclocal.m4: New files. - * configure.in (sbrk): Use BFD_NEED_DECLARATION to test for - presence of a suitable declaration in the system headers. - * configure: Regenerated. - * sbrk-sup.c (sbrk): Ifdef'd with NEED_DECLARATION_SBRK. - -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 - - * mcalloc.c: #include before . HP/UX 11.0 - needs this. - -Thu Apr 23 12:19:22 1998 Philippe De Muyter - - * 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 - - * 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 - - * mmalloc/detach.c: Do not include fcntl.h. - -Thu Aug 28 13:15:07 1997 Andrew Cagney - - * 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 - - * 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 - - * 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 - - * 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 - - * mmalloc.h (mmalloc_findbase): Add prototype. - -Fri Jul 12 18:35:34 1996 Fred Fish - - * 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 - - * 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 - - From: Thomas A Peterson - * 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 - - From: Miles Bader - * 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 - - * mmalloc.h (mmtrace): Add prototype. - -Sat Feb 3 12:41:00 1996 Fred Fish - - 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 - - * 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 - - * 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 - - * Makefile.in (BISON): Remove macro. - -Wed Sep 20 12:51:13 1995 Ian Lance Taylor - - * Makefile.in (maintainer-clean): New target, synonym for - realclean. Add GNU standard maintainer-clean echos. - -Thu Aug 3 10:45:37 1995 Fred Fish - - * 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 - - * Makefile.in (distclean, realclean): Remove config.cache and - config.log. - -Wed May 17 17:47:44 1995 J.T. Conklin - - * Makefile.in (Makefile): Added config.status to dependency list. - (config.status): New target. - -Fri May 5 15:17:53 1995 J.T. Conklin - - * mmap-sup.c: Removed munmap prototype. Some systems have a - slightly different prototype. - -Wed May 3 17:18:13 1995 J.T. Conklin - - * 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 before . - -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 . 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 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/MAINTAINERS b/mmalloc/MAINTAINERS deleted file mode 100644 index 0904867..0000000 --- a/mmalloc/MAINTAINERS +++ /dev/null @@ -1,5 +0,0 @@ -The mmalloc directory is maintained by the GDB group's Host -maintainers. - -This code is in a maintain-only phase - only configury patches fixing -host compile problems are generally accepted. diff --git a/mmalloc/Makefile.in b/mmalloc/Makefile.in deleted file mode 100644 index b05aea7..0000000 --- a/mmalloc/Makefile.in +++ /dev/null @@ -1,247 +0,0 @@ -# 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):$$TEXINPUTS - -# Files which should be generated via 'info' and installed by 'install-info' -INFO_DEPS = mmalloc.info - -# The TeX formatter -TEX = tex - -TARGETLIB = libmmalloc.a - -CFILES = mcalloc.c mfree.c mmalloc.c mmcheck.c mmemalign.c mmstats.c \ - mmtrace.c mrealloc.c mvalloc.c mmap-sup.c attach.c detach.c \ - keys.c sbrk-sup.c mm.c - -HFILES = mmalloc.h - -OFILES = mcalloc.o mfree.o mmalloc.o mmcheck.o mmemalign.o mmstats.o \ - mmtrace.o mrealloc.o mvalloc.o mmap-sup.o attach.o detach.o \ - keys.o sbrk-sup.o - -DEFS = @DEFS@ - -# The current default is to build a single object module with all the mmalloc -# functions. To build a more traditional library, flip this macro definition. -#TARGETOBJS = $(OFILES) -TARGETOBJS = mm.o - -.c.o: - $(CC) -c $(CFLAGS) $(DEFS) -I. -I$(srcdir)/../include $< - -# Do we want/need any config overrides? -# - -STAGESTUFF = $(TARGETLIB) *.o - -all: $(TARGETLIB) - -info: $(INFO_DEPS) -dvi: mmalloc.dvi -clean-info: -installcheck: - -mmalloc.info: mmalloc.texi - $(MAKEINFO) -I $(srcdir) -o ./mmalloc.info mmalloc.texi - -# This file doesn't need texindex currently. -mmalloc.dvi: mmalloc.texi - $(SET_TEXINPUTS) $(TEX) mmalloc.texi - rm -f mmalloc.?? mmalloc.??s mmalloc.log mmalloc.aux mmalloc.toc - -install-info: info - $(SHELL) $(srcdir)/../mkinstalldirs $(DESTDIR)$(infodir) - @list='$(INFO_DEPS)'; \ - for file in $$list; do \ - if test -f $$file; then d=.; else d=$(srcdir); fi; \ - for ifile in `cd $$d && echo $$file $$file-[0-9] $$file-[0-9][0-9]`; do \ - if test -f $$d/$$ifile; then \ - echo " $(INSTALL_DATA) $$d/$$ifile $(DESTDIR)$(infodir)/$$ifile"; \ - $(INSTALL_DATA) $$d/$$ifile $(DESTDIR)$(infodir)/$$ifile; \ - else : ; fi; \ - done; \ - done - $(POST_INSTALL) - @if $(SHELL) -c 'install-info --version | sed 1q | fgrep -s -v -i debian' >/dev/null 2>&1; then \ - list='$(INFO_DEPS)'; \ - for file in $$list; do \ - echo " install-info --info-dir=$(DESTDIR)$(infodir) $(DESTDIR)$(infodir)/$$file";\ - install-info --info-dir=$(DESTDIR)$(infodir) $(DESTDIR)$(infodir)/$$file || :;\ - done; \ - else : ; fi - -uninstall-info: - $(PRE_UNINSTALL) - @if $(SHELL) -c 'install-info --version | sed 1q | fgrep -s -v -i debian' >/dev/null 2>&1; then \ - ii=yes; \ - else ii=; fi; \ - list='$(INFO_DEPS)'; \ - for file in $$list; do \ - test -z "$$ii" \ - || install-info --info-dir=$(DESTDIR)$(infodir) --remove $$file; \ - done - $(NORMAL_UNINSTALL) - list='$(INFO_DEPS)'; \ - for file in $$list; do \ - (cd $(DESTDIR)$(infodir) && rm -f $$file $$file-[0-9] $$file-[0-9][0-9]); \ - done - -check: test1.c -# $(CC) -g $(srcdir)/test1.c libmmalloc.a -# This loses for Canadian cross (building mmalloc with a cross-compiler). -# There is probably some dejagnu-ish solution (such as what we are doing -# for gdb, perhaps). -# ./a.out - -install: all install-info - $(SHELL) $(srcdir)/../mkinstalldirs $(DESTDIR)$(libdir) - $(INSTALL_DATA) $(TARGETLIB) $(DESTDIR)$(libdir)/$(TARGETLIB)n - $(RANLIB) $(DESTDIR)$(libdir)/$(TARGETLIB)n - mv -f $(DESTDIR)$(libdir)/$(TARGETLIB)n $(DESTDIR)$(libdir)/$(TARGETLIB) - -uninstall: uninstall-info - -$(TARGETLIB): $(TARGETOBJS) - $(RM) -rf $@ - $(AR) $(AR_FLAGS) $@ $(TARGETOBJS) - $(RANLIB) $@ - -$(OFILES) : $(HFILES) Makefile - -mm.o: $(HFILES) $(CFILES) - $(CC) -c $(CFLAGS) $(DEFS) -I. -I$(srcdir)/../include $(srcdir)/mm.c - -.always.: -# Do nothing. - -.PHONEY: all etags tags ls clean stage1 stage2 .always. - -stage1: force - -mkdir stage1 - -mv -f $(STAGESTUFF) stage1 - -stage2: force - -mkdir stage2 - -mv -f $(STAGESTUFF) stage2 - -stage3: force - -mkdir stage3 - -mv -f $(STAGESTUFF) stage3 - -stage4: force - -mkdir stage4 - -mv -f $(STAGESTUFF) stage4 - -against=stage2 - -comparison: force - for i in *.o ; do cmp $$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 deleted file mode 100644 index 9412043..0000000 --- a/mmalloc/TODO +++ /dev/null @@ -1,17 +0,0 @@ -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/acinclude.m4 b/mmalloc/acinclude.m4 deleted file mode 100644 index 71b09b9..0000000 --- a/mmalloc/acinclude.m4 +++ /dev/null @@ -1 +0,0 @@ -sinclude(../bfd/acinclude.m4) diff --git a/mmalloc/aclocal.m4 b/mmalloc/aclocal.m4 deleted file mode 100644 index 7cf2a1e..0000000 --- a/mmalloc/aclocal.m4 +++ /dev/null @@ -1,14 +0,0 @@ -dnl aclocal.m4 generated automatically by aclocal 1.4 - -dnl Copyright (C) 1994, 1995-8, 1999 Free Software Foundation, Inc. -dnl This file is free software; the Free Software Foundation -dnl gives unlimited permission to copy and/or distribute it, -dnl with or without modifications, as long as this notice is preserved. - -dnl This program is distributed in the hope that it will be useful, -dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without -dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A -dnl PARTICULAR PURPOSE. - -sinclude(../bfd/acinclude.m4) - diff --git a/mmalloc/attach.c b/mmalloc/attach.c deleted file mode 100644 index 2bd70bf..0000000 --- a/mmalloc/attach.c +++ /dev/null @@ -1,221 +0,0 @@ -/* Initialization for access to a mmap'd malloc managed region. - Copyright 1992, 2000 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 -#include /* After sys/types.h, at least for dpx/2. */ -#include -#include -#ifdef HAVE_UNISTD_H -#include /* Prototypes for lseek */ -#endif -#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 deleted file mode 100755 index 8420dfa..0000000 --- a/mmalloc/configure +++ /dev/null @@ -1,1747 +0,0 @@ -#! /bin/sh - -# Guess values for system-dependent variables and create Makefiles. -# Generated automatically using autoconf version 2.13 -# Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc. -# -# This configure script is free software; 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See the -dnl GNU General Public License for more details. -dnl -dnl You should have received a copy of the GNU General Public License -dnl along with this program; if not, write to the Free Software -dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. -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 unistd.h) - -BFD_NEED_DECLARATION(sbrk) -BFD_NEED_DECLARATION(getpagesize) - -AC_OUTPUT(Makefile) diff --git a/mmalloc/detach.c b/mmalloc/detach.c deleted file mode 100644 index 1780679..0000000 --- a/mmalloc/detach.c +++ /dev/null @@ -1,71 +0,0 @@ -/* 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 -#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 deleted file mode 100644 index 35f00d1..0000000 --- a/mmalloc/keys.c +++ /dev/null @@ -1,66 +0,0 @@ -/* 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 deleted file mode 100644 index c9fcc07..0000000 --- a/mmalloc/mcalloc.c +++ /dev/null @@ -1,54 +0,0 @@ -/* 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 /* GCC on HP/UX needs this before string.h. */ -#include /* 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 deleted file mode 100644 index c509ac6..0000000 --- a/mmalloc/mfree.c +++ /dev/null @@ -1,247 +0,0 @@ -/* 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 deleted file mode 100644 index d487e0c..0000000 --- a/mmalloc/mm.c +++ /dev/null @@ -1,40 +0,0 @@ -/* 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, 2000 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. */ - -#ifdef HAVE_UNISTD_H -#include /* Prototypes for lseek, sbrk (maybe) */ -#endif -#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 deleted file mode 100644 index 7c60fe2..0000000 --- a/mmalloc/mmalloc.c +++ /dev/null @@ -1,337 +0,0 @@ -/* 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 /* 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 deleted file mode 100644 index 082547e..0000000 --- a/mmalloc/mmalloc.h +++ /dev/null @@ -1,62 +0,0 @@ -#ifndef MMALLOC_H -#define MMALLOC_H 1 - -#ifdef HAVE_STDDEF_H -# include -#else -# include /* for size_t */ -# include /* 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 deleted file mode 100644 index c038f65..0000000 --- a/mmalloc/mmalloc.texi +++ /dev/null @@ -1,258 +0,0 @@ -\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 deleted file mode 100644 index b12e43c..0000000 --- a/mmalloc/mmap-sup.c +++ /dev/null @@ -1,220 +0,0 @@ -/* Support for an sbrk-like function that uses mmap. - Copyright 1992, 2000 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) - -#ifdef HAVE_UNISTD_H -#include /* Prototypes for lseek */ -#endif -#include -#include -#include - -#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; -#if NEED_DECLARATION_GETPAGESIZE -extern int getpagesize PARAMS ((void)); -#endif - -#define PAGE_ALIGN(addr) (caddr_t) (((long)(addr) + pagesize - 1) & \ - ~(pagesize - 1)) - - -/* Return MAP_PRIVATE if MDP represents /dev/zero. Otherwise, return - MAP_SHARED. */ - -#define MAP_PRIVATE_OR_SHARED(MDP) ((MDP -> flags & MMALLOC_DEVZERO) \ - ? MAP_PRIVATE \ - : MAP_SHARED) - - -/* 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_PRIVATE_OR_SHARED (mdp), 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_PRIVATE_OR_SHARED (mdp) | 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_PRIVATE_OR_SHARED (mdp) | 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_PRIVATE | MAP_ANONYMOUS; - fd = -1; -#else -#ifdef MAP_FILE - flags = MAP_PRIVATE | MAP_FILE; -#else - flags = MAP_PRIVATE; -#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 deleted file mode 100644 index 48936b3..0000000 --- a/mmalloc/mmcheck.c +++ /dev/null @@ -1,223 +0,0 @@ -/* 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. - - - - 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 deleted file mode 100644 index 3ada027..0000000 --- a/mmalloc/mmemalign.c +++ /dev/null @@ -1,62 +0,0 @@ -/* 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 deleted file mode 100644 index 4576262..0000000 --- a/mmalloc/mmprivate.h +++ /dev/null @@ -1,343 +0,0 @@ -/* 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 -#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_ where the - return value is the 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 deleted file mode 100644 index ed17323..0000000 --- a/mmalloc/mmstats.c +++ /dev/null @@ -1,46 +0,0 @@ -/* 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 deleted file mode 100644 index d7689ce..0000000 --- a/mmalloc/mmtrace.awk +++ /dev/null @@ -1,36 +0,0 @@ -# -# 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 deleted file mode 100644 index 563c860..0000000 --- a/mmalloc/mmtrace.c +++ /dev/null @@ -1,171 +0,0 @@ -/* 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 -#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 deleted file mode 100644 index e2004aa..0000000 --- a/mmalloc/mrealloc.c +++ /dev/null @@ -1,163 +0,0 @@ -/* 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 /* 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 deleted file mode 100644 index e44942f..0000000 --- a/mmalloc/mvalloc.c +++ /dev/null @@ -1,50 +0,0 @@ -/* 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; -#if NEED_DECLARATION_GETPAGESIZE -extern int getpagesize PARAMS ((void)); -#endif - -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 deleted file mode 100644 index 93c078b..0000000 --- a/mmalloc/sbrk-sup.c +++ /dev/null @@ -1,102 +0,0 @@ -/* Support for sbrk() regions. - Copyright 1992, 2000 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. */ - -#ifdef HAVE_UNISTD_H -#include /* Prototypes for sbrk (maybe) */ -#endif -#include /* Prototypes for memcpy, memmove, memset, etc */ - -#include "mmprivate.h" - -static PTR sbrk_morecore PARAMS ((struct mdesc *, int)); -#if NEED_DECLARATION_SBRK -extern PTR sbrk PARAMS ((int)); -#endif - -/* 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); -} - - -- 2.7.4