Tue Jan 6 13:58:56 2009 Google Inc. <opensource@google.com> * google-perftools: version 1.0 release * Exactly the same as 1.0rc2 Sun Dec 14 17:10:35 2008 Google Inc. <opensource@google.com> * google-perftools: version 1.0rc2 release * Fix compile error on 64-bit systems (casting ptr to int) (csilvers) Thu Dec 11 16:01:32 2008 Google Inc. <opensource@google.com> * google-perftools: version 1.0rc1 release * Replace API for selectively disabling heap-checker in code (sanjay) * Add a pre-mmap hook (daven, adlr) * Add MallocExtension interface to set memory-releasing rate (fikes) * Augment pprof to allow any string ending in /pprof/profile (csilvers) * PORTING: Rewrite -- and fix -- malloc patching for windows (dvitek) * PORTING: Add nm-pdb and addr2line-pdb for use by pprof (dvitek) * PORTING: Improve cygwin and mingw support (jperkins, csilvers) * PORTING: Fix pprof for mac os x, other pprof improvements (csilvers) * PORTING: Fix some PPC bugs in our locking code (anton.blanchard) * A new unittest, smapling_test, to verify tcmalloc-profiles (csilvers) * Turn off TLS for gcc < 4.1.2, due to a TLS + -fPIC bug (csilvers) * Prefer __builtin_frame_address to assembly for stacktraces (nlewycky) * Separate tcmalloc.cc out into multiple files -- finally! (kash) * Make our locking code work with -fPIC on 32-bit x86 (aruns) * Fix an initialization-ordering bug for tcmalloc/profiling (csilvers) * Use "initial exec" model of TLS to speed up tcmalloc (csilvers) * Enforce 16-byte alignment for tcmalloc, for SSE (sanjay) Tue Sep 23 08:56:31 2008 Google Inc. <opensource@google.com> * google-perftools: version 0.99.2 release * COMPILE FIX: add #include needed for FreeBSD and OS X (csilvers) Sat Sep 20 09:37:18 2008 Google Inc. <opensource@google.com> * google-perftools: version 0.99.1 release * BUG FIX: look for nm, etc in /usr/bin, not /usr/crosstool (csilvers) Thu Sep 18 16:00:27 2008 Google Inc. <opensource@google.com> * google-perftools: version 0.99 release * Add IsHeapProfileRunning (csilvers) * Add C shims for some of the C++ header files (csilvers) * Fix heap profile file clean-up logic (maxim) * Rename linuxthreads.c to .cc for better compiler support (csilvers) * Add source info to disassembly in pprof (sanjay) * Use open instead of fopen to avoid memory alloc (csilvers) * Disable malloc extensions when running under valgrind (kcc) * BUG FIX: Fix out-of-bound error by reordering a check (larryz) * Add Options struct to ProfileData (cgd) * Correct PC-handling of --base in pprof (csilvers) * Handle 1 function occurring twice in an image (sanjay) * Improve stack-data cleaning (maxim) * Use 'struct Foo' to make header C compatible (csilvers) * Add 'total' line to pprof --text (csilvers) * Pre-allocate buffer for heap-profiler to avoid OOM errors (csilvers) * Allow a few more env-settings to control tcmalloc (csilvers) * Document some of the issues involving thread-local storage (csilvers) * BUG FIX: Define strtoll and friends for windows (csilvers) Mon Jun 9 16:47:03 2008 Google Inc. <opensource@google.com> * google-perftools: version 0.98 release * Add ProfilerStartWithOptions() (cgd) * Change tcmalloc_minimal to not do any stack-tracing at all (csilvers) * Prefer mmap to sbrk for 64-buit debug mode (sanjay) * Fix accounting for some tcmalloc stats (sanjay) * Use setrlimit() to keep unittests from killing the machine (odo) * Fix a bug when sbrk-ing near address 4G (csilvers) * Make MallocHook thread-safe (jyasskin) * Fix windows build for MemoryBarrier (jyasskin) * Fix CPU-profiler docs to mention correct libs (csilvers) * Fix for GetHeapProfile() when heap-profiling is off (maxim) * Avoid realloc resizing ping-pongs using hysteresis (csilvers) * Add --callgrind output support to pprof (klimek) * Fix profiler.h and heap-profiler.h to be C-compatible (csilvers) * Break malloc_hook.h into two parts to reduce dependencies (csilvers) * Better handle systems that don't implement mmap (csilvers) * PORTING: disable system_alloc_unittest for msvc (csilvers) * PORTING: Makefile tweaks to build better on cygwin (csilvers) Mon Apr 21 15:20:52 2008 Google Inc. <opensource@google.com> * google-perftools: version 0.97 release * Refactor GetHeapProfile to avoid using malloc (maxim) * Fix heap-checker and heap-profiler hook interactions (maxim) * Fix a data race in MemoryRegionMap::Lock (jyasskin) * Improve thread-safety of leak checker (maxim) * Fix mmap profile to no longer deadlock (maxim) * Fix rpm to have devel package depend on non-devel (csilvers) * PORTING: Fix clock-speed detection for Mac OS X (csilvers) Tue Mar 18 14:30:44 2008 Google Inc. <opensource@google.com> * google-perftools: version 0.96 release * major atomicops rewrite; fixed atomic ops code for linux/ppc (vchen) * nix the stacktrace library; now build structure is simpler (csilvers) * Speed up heap-checker, and reduce extraneous logging (maxim) * Improve itimer code for NPTL case (cgd) * Add source code annotations for use by valgrind, etc (kcc) * PORTING: Fix high resolution timers for Mac OS X (adlr) Tue Feb 19 12:01:31 2008 Google Inc. <opensource@google.com> * google-perftools: version 0.95.1 release (bugfix release) * x86_64 compile-fix: nix pread64 and pwrite64 (csilvers) * more heap-checker debug logging (maxim) * minor improvement to x86_64 CycleClock (gpike) Tue Feb 12 12:28:32 2008 Google Inc. <opensource@google.com> * google-perftools: version 0.95 release * Better -- not perfect -- support for linux-ppc (csilvers) * Fix race condition in libunwind stacktrace (aruns) * Speed up x86 spinlock locking (m3b) * Improve heap-checker performance (maxim) * Heap checker traverses more ptrs inside heap-alloced objects (maxim) * Remove deprecated ProfilerThreadState function (cgd) * Update libunwind documentation for statically linked binaries (aruns) Mon Dec 3 23:51:54 2007 Google Inc. <opensource@google.com> * google-perftools: version 0.94.1 release (bugfix release) * Fix missing #includes for x86_64 compile using libunwind (csilvers) Thu Nov 29 07:59:43 2007 Google Inc. <opensource@google.com> * google-perftools: version 0.94 release * PORTING: MinGW/Msys support -- runs same code as MSVC does (csilvers) * PORTING: Add NumCPUs support for Mac OS X (csilvers) * Work around a sscanf bug in glibc(?) (waldemar) * Fix Windows MSVC bug triggered by thread deletion (csilvers) * Fix bug that triggers in MSVC /O2: missing volatile (gpike) * March-of-time support: quiet warnings/errors for gcc 4.2, OS X 10.5 * Modify pprof so it works without nm: useful for windows (csilvers) * pprof: Support filtering for CPU profiles (cgd) * Bugfix: have realloc report to hooks in all situations (maxim) * Speed improvement: replace slow memcpy with std::copy (soren) * Speed: better iterator efficiency in RecordRegionRemoval (soren) * Speed: minor speed improvements via better bitfield alignment (gpike) * Documentation: add documentation of binary profile output (cgd) Fri Aug 17 12:32:56 2007 Google Inc. <opensource@google.com> * google-perftools: version 0.93 release * PORTING: everything compiles on Solaris, OS X, FreeBSD (see INSTALL) * PORTING: cpu-profiler works on most platforms (much better GetPC()) * PORTING: heap-profiler works on most platforms * PORTING: improved windows support, including release builds * No longer build or run ptmalloc tests by default * Add support for using memfs filesystem to allocate memory in linux * WINDOWS: give debug library and release library different names Tue Jul 17 22:26:27 2007 Google Inc. <opensource@google.com> * google-perftools: version 0.92 release * PERFORMANCE: use a packed cache to speed up tcmalloc * PORTING: preliminary windows support! (see README.windows) * PORTING: better support for solaris, OS X, FreeBSD (see INSTALL) * Envvar support for running the heap-checker under gdb * Add weak declarations to maybe_threads to fix no-pthreads compile bugs * Some 64bit fixes, especially with pprof * Better heap-checker support for some low-level allocations * Fix bug where heap-profiles would sometimes get truncated * New documentation about how to handle common heap leak situations * Use computed includes for hash_map/set: easier config * Added all used .m4 templates to the distribution Wed Apr 18 16:43:55 2007 Google Inc. <opensource@google.com> * google-perftools: version 0.91 release * Brown-paper-bag bugfix: compilation error on some x86-64 machines Fri Apr 13 14:50:51 2007 Google Inc. <opensource@google.com> * google-perftools: version 0.90 release * (As the version-number jump hints, this is a major new release: almost every piece of functionality was rewritten. I can't do justice to all the changes, but will concentrate on highlights.) *** USER-VISIBLE CHANGES: * Ability to "release" unused memory added to tcmalloc * Exposed more tweaking knobs via environment variables (see docs) * pprof tries harder to map addresses to functions * tcmalloc_minimal compiles and runs on FreeBSD 6.0 and Solaris 10 *** INTERNAL CHANGES: * Much better 64-bit support * Better multiple-processor support (e.g. multicore contention tweaks) * Support for recent kernel ABI changes (e.g. new arg to mremap) * Addition of spinlocks to tcmalloc to reduce contention cost * Speed up tcmalloc by using __thread on systems that support TLS * Total redesign of heap-checker to improve liveness checking * More portable stack-frame analysis -- no more hard-coded constants! * Disentangled heap-profiler code and heap-checker code * Several new unittests to test, e.g., thread-contention costs * Lots of small (but important!) bug fixes: e.g., fixing GetPC on amd64 *** KNOWN PROBLEMS: * CPU-profiling may crash on x86_64 (64-bit) systems. See the README * Profiling/heap-checking may deadlock on x86_64 systems. See README Wed Jun 14 15:11:14 2006 Google Inc. <opensource@google.com> * google-perftools: version 0.8 release * Experimental support for remote profiling added to pprof (many) * Fixed race condition in ProfileData::FlushTable (etune) * Better support for weird /proc maps (maxim, mec) * Fix heap-checker interaction with gdb (markus) * Better 64-bit support in pprof (aruns) * Reduce scavenging cost in tcmalloc by capping NumMoveSize (sanjay) * Cast syscall(SYS_mmap); works on more 64-bit systems now (menage) * Document the text output of pprof! (csilvers) * Better compiler support for no-THREADS and for old compilers (csilvers) * Make libunwind the default stack unwinder for x86-64 (aruns) * Somehow the COPYING file got erased. Regenerate it (csilvers) Thu Apr 13 20:59:09 2006 Google Inc. <opensource@google.com> * google-perftools: version 0.7 release * Major rewrite of thread introspection for new kernels (markus) * Major rewrite of heap-checker to use new thread tools (maxim) * Add proper support for following data in thread registers (maxim) * Syscall support for older kernels, including _syscall6 (markus) * Support PIC mode (markus, mbland, iant) * Better support for running in non-threaded contexts (csilvers) Fri Jan 27 14:04:27 2006 Google Inc. <opensource@google.com> * google-perftools: version 0.6 release * More sophisticated stacktrace usage, possibly using libunwind (aruns) * Update pprof to handle 64-bit profiles (dehnert) * Fix GetStackTrace to correctly return top stackframe (sanjay) * Add ANSI compliance for new and new[], including new_handler (jkearney) * More accuracy by reading ELF files directly rather than objdump (mec) * Add readline support for pprof (addi) * Add #includes for PPC (csilvers) * New PC-detection routine for ibook powerpc (asbestoshead) * Vastly improved tcmalloc unittest (csilvers) * Move documentation from /usr/doc to /usr/share/doc Mon Nov 14 17:28:59 2005 Google Inc. <opensource@google.com> * google-perftools: version 0.5 release * Add va_start/va_end calls around vsnprintf() (csilvers) * Write our own __syscall_return(), since it's not defined consistently on all 64-bit linux distros (markus) Wed Oct 26 15:19:16 2005 Google Inc. <opensource@google.com> * google-perftools: version 0.4 release * Decrease fragmentation in tcmalloc (lefevere) * Support for ARM in some of the thread-specific code (markus) * Turn off heap-checker for statically-linked binaries, which cause error leak reports now (etune) * Many pprof improvements, including a command-line interface (jeff) * CPU profiling now automatically affects all threads in linux 2.6. (Kernel bugs break CPU profiling and threads in linux 2.4 a bit.) ProfilerEnable() and ProfilerDisable() are deprecated. (sanjay) * tcmalloc now correctly intercepts memalign (m3b, maxim) * Syntax fix: added missing va_end()s. Helps non-gcc compiling (etune) * Fixed a few coredumper bugs: race condition after PTRACE_DETACH, ignore non-aligned stackframe pointers (markus, menage) * 64-bit cleanup, especially for spinlock code (etune) and mmap (sanjay) * Better support for finding threads in linux (markus) * tcmalloc now tracks those stack traces that allocate memory (sanjay) * Work around a weird setspecific problem (sanjay) * Fix tcmalloc overflow problems when an alloc is close to 2G/4G (sanjay) Fri Jun 24 18:02:26 2005 Google Inc. <opensource@google.com> * google-perftools: version 0.3 release * Add missing errno include for one of the unittests (csilvers) * Reduce tcmalloc startup memory from 5M to 256K (sanjay) * Add support for mallopt() and mallinfo (sanjay) * Improve stacktrace's performance on some 64-bit systems (etune) * Improve the stacktrace unittest (etune) Tue May 31 08:14:38 2005 Google Inc. <opensource@google.com> * google-perftools: version 0.2 release * Use mmap2() instead of mmap(), to map more memory (menage) * Do correct pthread-local checking in heap-checker! (maxim) * Avoid overflow on 64-bit machines in pprof (sanjay) * Add a few more GetPC() functions, including for AMD (csilvers) * Better method for overriding pthread functions (menage) * (Hacky) fix to avoid overwriting profile files after fork() (csilvers) * Crashing bugfix involving dumping heaps on small-stack threads (tudor) * Allow library versions with letters at the end (csilvers) * Config fixes for systems that don't define PATH_MAX (csilvers) * Confix fixes so we no longer need config.h after install (csilvers) * Fix to pprof to correctly read very big cpu profiles (csilvers) * Fix to pprof to deal with new commandline flags in modern gv's * Better error reporting when we can't access /proc/maps (etune) * Get rid of the libc-preallocate code (which could crash on some systems); no longer needed with local-threads fix (csilvers) Tue Feb 8 09:57:17 2005 Google Inc. <opensource@google.com> * google-perftools: initial release: The google-perftools package contains some utilities to improve and analyze the performance of C++ programs. This includes an optimized thread-caching malloc() and cpu and heap profiling utilities.
