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Text File | 1996-09-28 | 14.7 KB | 421 lines

$Id: CHANGES,v 1.34 1992/09/03 22:24:33 cpcahil Exp $ patchlevel 14 General - Many configuration changes from Jonathan I. Kamens - added code to support better reallocations when nearby space is available. Configure - changes to support more systems fill.c - fixed bug that caused problem when free-filling was disabled realloc.c - now looks for extra space before the segment to be realloced - if segment is to be increased and it is at the end of memory, just sbrk extra room onto the array malloc.c - added code to support joining to previous segment - added initialization of free file pointer patchlevel 13 ******IMPORTANT******* - malloc_size() function name changed to malloc_inuse() - mallopt() function name changed to dbmallopt() - new malloc_size() function with different behavior - dbmallopt() now takes a pointer to the union Configure - added check to use string.h instead of memory.h - changed code to guess at settings when they couldn't be determined - added ability to bypass compilers that couldn't make executables (freq case with g++ if libg++ isn't available) - added ASM checks for older 386 assemblers Makefile - documented new USE_NLS definition - new memalign source/object PROBLEMS - updated descriptions of parameter settings abort.c - new file containing malloc_abort function. cctest.c - added support for overriding inclusion of memory.h datamc.c - asm changes for old ISC assembler free.c - added warning about freeing marked segments leak.c - fixed bug in malloc_size - changed name of malloc_size to malloc_inuse since malloc_size collided with funtion of same name on the NeXT. malign.c - new file - support functions for aligned allocations (compatible with SVR4 memalign(3)) malloc.3 - changed references to malloc_size to malloc_inuse. - removed values from discussions on #defines - changed mallopt references to dbmallopt - added descriptions of the default settings for options - added description of freemark option malloc.c - changed to call malloc_abort - added support for new options - added check for zero byte allocations malloc.h.org - changed references to malloc_size to malloc_inuse. - changed mallopt references to dbmallopt - added definitions for malloc_mark and new malloc_size mallopt.c - changed mallopt to dbmallopt - added support for freemark option realloc.c - added code to make sure marked segment stays marked. size.c - new malloc_size function string.c - fixed CompareUpper macro - added code to preclude inclusion of ctype.h when USE_NLS is defined to allow for native language support testerr.c - added tests for memalign(), malloc_size() and malloc_inuse() - changed mallopt references to dbmallopt testmalloc.c - changed mallopt calls to dbmallopt patchlevel 12 general - many changes to handle systems with ints smaller than longs Configure - fixed to handle problem on some systems where it didn't correctly determine if setenv was present - changed to better handle configuration on Sun's - added ability to continue even if an error was found Makefile - added docs on using -DANSI_NULLS to allow for ANSI NULL support in realloc and free cctest.c - added code to assist build on Suns where gcc is present datamc.c - fixed bug that caused overwriting of memory areas free.c - added support for ANSI_NULLS #define malloc.e - some minor format changes. realloc.c - added support for ANSI_NULLS #define patchlevel 11 general - significant performance enhancements - DG/UX libc internal interface (from Paul Smith) - changed filling so that it now will always fill some bytes both before and after the allocated segment - misc changes from port to Minix on Atari (from Rainer Orth) - added use of system memset/memcpy routines for performance - added override capability for fill characters and buffer boundary size Configure - cleaned up reference to DG equipment - added code to pull memset and memcpy out of libc.a Makefile - entries for new source file(s) - added code to automatically use system mem* funcs if the configure script found them appropriate Runtests - added better checking of the test output cctest.c - added tests for DataMC and DataMS - added program to use to map memset to DataMS and memcpy to DataMC datamc.c - new module for copying data around - added ASM version for 386 systems datams.c - new module for filling data dgmalloc.c - new module for DG/UX stuff fill.c - new module containing all code related to filling data areas - added support for several levels of filling - optimized fill mechanism free.c - modified fill area checks - fix over/underruns so error is only reported once - changed to only fill data areas that need filling m_init.c - added initialization of new fill character overrides m_perror.c - added info to error message malloc.3 - updated manual to reflect changes in code malloc.h.org - defs for new DG/UX stuff malloc.c - modified filling so that before and after segments are always filled (only fill basic segment if fill area is enabled) - removed filling modules (moved to fill.c) - optimized use of filling so that only fills that were needed get called - support for overriding boundary size mallocin.h - defs for new fillarea stuff - defs for fill optimizations - stuff for fill character overrides mallopt.c - support for new fillarea flags - support for malloc_fill flag setting mchain.c - added underrun check - fix over/underruns so error is only reported once. mcheck.c - more performance enhancements - added verification that segment was in use for pointers that are being verified - added tweak to find segment quickly if the pointer that was passed points to the beginning of the segment. memory.c - changed to use fast DataMC/DataMS funcs for data movements - changed comparison functions to base return upon unsigned comparisons as is required under ANSI C realloc.c - support for new fill mechanism - support for overriding boundary size string.c - changed comparison functions to base return upon unsigned comparisons as is required under ANSI C - changed to use fast memset/memcpy for data movements patchlevel 10 general - more portability changes thanks to Denny Page. - General mechanism for adding new alloc interfaces - XtAlloc routine tracking (idea and sample source from Denny Page) - yet another session with lint Configure - changes to handle compilers that only give warnings for some of the test situations - added creation of system dependency header (sysdefs.h) and moved stuff from malloc.h that is only used for building the library into the new file - renamed temp files to prevent collisions - added auto-determination of X11R4/5 - added SETENV stuff Makefile - added new source file(s) to list of sources - added rules for building sysdefs.h and dependencies on it - moved install of malloc.h to /usr/local/debug_include because gcc2.1 automatically includes /usr/local in the default path when compiling modules - removed docs on setting options that configure now automatically determines README - updated to reflect changes made in tests Runtests - added better checking of testmalloc output calloc.c - hooks for X allocation routines - simplification of setting type/counter flags dump.c - lint changes - changed to use new function name routines to get name of routine that allocated the segment free.c - added identification of which free function free'd segment - support for X allocation routines malloc.c - hooks for X allocation routines - simplification of setting type/counter flags - moved function name determination into its own fcn (so it could be called by dump) malloc.h.org - added protos & defs for new X allocation routines mallocin.h - extended malloc types - added free types - changed magic number to make room for free types - added inclusion of new system dependency header (sysdefs.h) - added some defs for the X stuff so we don't get compile errors when prototypes.h is included realloc.c - hooks for X allocation routines testmalloc.c - lint changes - added tests for Xt allocation hooks testmem.c - lint changes teststack.c - lint changes xheap.c - X11R5 compatibility stuff for Xt Allocation routines xmalloc.c - new source file - XtAlloc routines for easier debugging of X applications patchlevel 9 general - just some minor changes from testing of patch 8 on various system architectures README - spelling corrections Buildpatch - changed to archive old patches Configure - removed used of escape sequences (like \n) from echo cmds - make size_t first choice on strsize setting Runtests - initialze environment to defaults so that the test runs in a known environment dump.c - require MALLOC_DETAIL to be non-zero as opposed to just being specified in the environment malloc.3 - updated manual page to reflect changes malloc.c - require MALLOC_SHOW_LINKS to be non-zero as opposed to just being specified in the environment mallopt.c - changed ERRFILE handling to allow specification of - to indicate stderr output - added close of existing errfile if it is changed and it wasn't pointing to stderr minipatch - new shell to build intermediate patches m_perror.c - spelling corrections patchlevel 8 general - added automatic configuration (using shell script) - added support for different data types between the various components (str*, mem*, and malloc*) - renamed some files so they would fit into MS-DOS namespace mallocint.h -> mallocin.h, malloc_chk.c -> mcheck.c malloc_chn.c -> mchain.c - fixed fill_area stuff so that it can be turned off and on during the execution of a program (thanks to Denny Page - denny@tss.com) - can now disable reuse of segments which makes it easier to track multiple frees of the same segment (idea and some of the code from Denny Page) - added code to assist in identifying duplicate frees of the same malloc area - added support for keeping track of the stack in which the malloc calls are made. (suggested by Paul Smith at DG) - added support for automatic testing and some new tests Configure - new automatic configuration script Makefile - added ranlib call after copying library (needed on some systems because the timestamp changes with the copy) Runtests - new automatic testing script free.c - added check for pointer alignment on the ptr passed to free - added logging of where pointer was freed leak.c - added support for marking active segments so that they don't get counted in the leak routines m_perror.c - fixed typo in error message malloc.h - moved real file to malloc.h.org which gets modified and copied to malloc.h by the automatic configuration malloc.c - added code to ensure that calls to abort either cause the process to abort, or, if not, then just exit. - added code to ensure that sbrk() returns data on M_RND boundary (or adjust the pointer accordingly) mchain.c - added pointer alignment checks realloc.c - added check for pointer alignment string.c - new functions: stricmp and strincmp (case insensitive strcmp) stack.c - new file which has the stack support functions testmalloc.c - added doubleword boundary check testmem.c - tests for new string functions tostring.c - fixed bug which resulted in empty output if value was zero patchlevel 7 - general - added support for overriding the use of void for systems that do not support it - added more info to the PROBLEMS and README files - free.c - added call to MALLOC_INIT to initialize the malloc subsystem when free is the first entry point. - malloc.c - fixed typo which resulted in truncation of error message - increased size of error string buffers and added overflow checks - malloc.h - added code so that it could be included by c++ programs - added additional info on setting SIZETYPE and DATATYPE - added code to prevent inclusions of string.h and memory.h after malloc.h has been included (since they conflict) - added prototypes for malloc_dump and malloc_list - added #ifdefs to get the code to compile out of the box for known systems (hpux,IBMRS6000, and ISC UNIX) - memory.c - changed memccpy to only check the number of chars it is going to copy (some stdio implementations use memccpy with a source string that may not be the full length). - malloc.3 - reformatted the SYNOPSIS section and cleaned up some other parts of the doc. - added more warnings about potential problems - Buildpatch - changed to build the patch based upon the old shar files, as opposed to the information in the RCS files - added verification of successful patch - Makefile - misc cleanups for making patch releases - removed \c escape sequence from test run script patchlevel 6 - README file updated with expanded porting/usage/test program info - PROBLEM file added to mention typical porting problems - CHECKSUMS file added to allow verification of proper transmission - NAME change - default library name changed to libdbmalloc.a so that it doesn't conflict with system libmalloc.a files. - performance enhancements - selected use of registers for pointers referenced frequently - addition of free list chain, so allocations just search a list of available blocks - portable optimization of the malloc_memset function so that it is much faster when filling malloc'd areas - added ability to turn off pre/post-filling of malloced areas via an environment variable and/or mallopt() - added option to override first fit algorithm with best fit algorithm (should reduce memory fragmentation) - use #if __STDC__ instead of #ifdef, so if the symbol is defined, but is not set to a 1, it is not interpreted as an ANSI C compiler - cleanup of some warnings from gcc -Wall - makefile changes - addition of manual page installation - added frcinstall target which forces installation - added DESTDIR (equivalent to INSTDIR) which defaults to /usr/local - added targets to build and run tests and removed test building from the all target - documented useful targets - changed to using cshar to generate shar files with MANIFEST - added building of CHECKSUMS file - manual page changes - minor changes to make it compatible with groff - fixed bug in eX macro which was causing fixed font output to be extremely wide - changed references to malloc_opt to mallopt and updated to the correct usage (using the union malloptarg) - documented new environment variable to control fragmentation