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diff --git a/src/rt/jemalloc/ChangeLog b/src/rt/jemalloc/ChangeLog deleted file mode 100644 index 8ab884875b0..00000000000 --- a/src/rt/jemalloc/ChangeLog +++ /dev/null @@ -1,438 +0,0 @@ -Following are change highlights associated with official releases. Important -bug fixes are all mentioned, but internal enhancements are omitted here for -brevity (even though they are more fun to write about). Much more detail can be -found in the git revision history: - - http://www.canonware.com/cgi-bin/gitweb.cgi?p=jemalloc.git - git://canonware.com/jemalloc.git - -* 3.4.0 (June 2, 2013) - - This version is essentially a small bugfix release, but the addition of - aarch64 support requires that the minor version be incremented. - - Bug fixes: - - Fix race-triggered deadlocks in chunk_record(). These deadlocks were - typically triggered by multiple threads concurrently deallocating huge - objects. - - New features: - - Add support for the aarch64 architecture. - -* 3.3.1 (March 6, 2013) - - This version fixes bugs that are typically encountered only when utilizing - custom run-time options. - - Bug fixes: - - Fix a locking order bug that could cause deadlock during fork if heap - profiling were enabled. - - Fix a chunk recycling bug that could cause the allocator to lose track of - whether a chunk was zeroed. On FreeBSD, NetBSD, and OS X, it could cause - corruption if allocating via sbrk(2) (unlikely unless running with the - "dss:primary" option specified). This was completely harmless on Linux - unless using mlockall(2) (and unlikely even then, unless the - --disable-munmap configure option or the "dss:primary" option was - specified). This regression was introduced in 3.1.0 by the - mlockall(2)/madvise(2) interaction fix. - - Fix TLS-related memory corruption that could occur during thread exit if the - thread never allocated memory. Only the quarantine and prof facilities were - susceptible. - - Fix two quarantine bugs: - + Internal reallocation of the quarantined object array leaked the old - array. - + Reallocation failure for internal reallocation of the quarantined object - array (very unlikely) resulted in memory corruption. - - Fix Valgrind integration to annotate all internally allocated memory in a - way that keeps Valgrind happy about internal data structure access. - - Fix building for s390 systems. - -* 3.3.0 (January 23, 2013) - - This version includes a few minor performance improvements in addition to the - listed new features and bug fixes. - - New features: - - Add clipping support to lg_chunk option processing. - - Add the --enable-ivsalloc option. - - Add the --without-export option. - - Add the --disable-zone-allocator option. - - Bug fixes: - - Fix "arenas.extend" mallctl to output the number of arenas. - - Fix chunk_recycyle() to unconditionally inform Valgrind that returned memory - is undefined. - - Fix build break on FreeBSD related to alloca.h. - -* 3.2.0 (November 9, 2012) - - In addition to a couple of bug fixes, this version modifies page run - allocation and dirty page purging algorithms in order to better control - page-level virtual memory fragmentation. - - Incompatible changes: - - Change the "opt.lg_dirty_mult" default from 5 to 3 (32:1 to 8:1). - - Bug fixes: - - Fix dss/mmap allocation precedence code to use recyclable mmap memory only - after primary dss allocation fails. - - Fix deadlock in the "arenas.purge" mallctl. This regression was introduced - in 3.1.0 by the addition of the "arena.<i>.purge" mallctl. - -* 3.1.0 (October 16, 2012) - - New features: - - Auto-detect whether running inside Valgrind, thus removing the need to - manually specify MALLOC_CONF=valgrind:true. - - Add the "arenas.extend" mallctl, which allows applications to create - manually managed arenas. - - Add the ALLOCM_ARENA() flag for {,r,d}allocm(). - - Add the "opt.dss", "arena.<i>.dss", and "stats.arenas.<i>.dss" mallctls, - which provide control over dss/mmap precedence. - - Add the "arena.<i>.purge" mallctl, which obsoletes "arenas.purge". - - Define LG_QUANTUM for hppa. - - Incompatible changes: - - Disable tcache by default if running inside Valgrind, in order to avoid - making unallocated objects appear reachable to Valgrind. - - Drop const from malloc_usable_size() argument on Linux. - - Bug fixes: - - Fix heap profiling crash if sampled object is freed via realloc(p, 0). - - Remove const from __*_hook variable declarations, so that glibc can modify - them during process forking. - - Fix mlockall(2)/madvise(2) interaction. - - Fix fork(2)-related deadlocks. - - Fix error return value for "thread.tcache.enabled" mallctl. - -* 3.0.0 (May 11, 2012) - - Although this version adds some major new features, the primary focus is on - internal code cleanup that facilitates maintainability and portability, most - of which is not reflected in the ChangeLog. This is the first release to - incorporate substantial contributions from numerous other developers, and the - result is a more broadly useful allocator (see the git revision history for - contribution details). Note that the license has been unified, thanks to - Facebook granting a license under the same terms as the other copyright - holders (see COPYING). - - New features: - - Implement Valgrind support, redzones, and quarantine. - - Add support for additional platforms: - + FreeBSD - + Mac OS X Lion - + MinGW - + Windows (no support yet for replacing the system malloc) - - Add support for additional architectures: - + MIPS - + SH4 - + Tilera - - Add support for cross compiling. - - Add nallocm(), which rounds a request size up to the nearest size class - without actually allocating. - - Implement aligned_alloc() (blame C11). - - Add the "thread.tcache.enabled" mallctl. - - Add the "opt.prof_final" mallctl. - - Update pprof (from gperftools 2.0). - - Add the --with-mangling option. - - Add the --disable-experimental option. - - Add the --disable-munmap option, and make it the default on Linux. - - Add the --enable-mremap option, which disables use of mremap(2) by default. - - Incompatible changes: - - Enable stats by default. - - Enable fill by default. - - Disable lazy locking by default. - - Rename the "tcache.flush" mallctl to "thread.tcache.flush". - - Rename the "arenas.pagesize" mallctl to "arenas.page". - - Change the "opt.lg_prof_sample" default from 0 to 19 (1 B to 512 KiB). - - Change the "opt.prof_accum" default from true to false. - - Removed features: - - Remove the swap feature, including the "config.swap", "swap.avail", - "swap.prezeroed", "swap.nfds", and "swap.fds" mallctls. - - Remove highruns statistics, including the - "stats.arenas.<i>.bins.<j>.highruns" and - "stats.arenas.<i>.lruns.<j>.highruns" mallctls. - - As part of small size class refactoring, remove the "opt.lg_[qc]space_max", - "arenas.cacheline", "arenas.subpage", "arenas.[tqcs]space_{min,max}", and - "arenas.[tqcs]bins" mallctls. - - Remove the "arenas.chunksize" mallctl. - - Remove the "opt.lg_prof_tcmax" option. - - Remove the "opt.lg_prof_bt_max" option. - - Remove the "opt.lg_tcache_gc_sweep" option. - - Remove the --disable-tiny option, including the "config.tiny" mallctl. - - Remove the --enable-dynamic-page-shift configure option. - - Remove the --enable-sysv configure option. - - Bug fixes: - - Fix a statistics-related bug in the "thread.arena" mallctl that could cause - invalid statistics and crashes. - - Work around TLS deallocation via free() on Linux. This bug could cause - write-after-free memory corruption. - - Fix a potential deadlock that could occur during interval- and - growth-triggered heap profile dumps. - - Fix large calloc() zeroing bugs due to dropping chunk map unzeroed flags. - - Fix chunk_alloc_dss() to stop claiming memory is zeroed. This bug could - cause memory corruption and crashes with --enable-dss specified. - - Fix fork-related bugs that could cause deadlock in children between fork - and exec. - - Fix malloc_stats_print() to honor 'b' and 'l' in the opts parameter. - - Fix realloc(p, 0) to act like free(p). - - Do not enforce minimum alignment in memalign(). - - Check for NULL pointer in malloc_usable_size(). - - Fix an off-by-one heap profile statistics bug that could be observed in - interval- and growth-triggered heap profiles. - - Fix the "epoch" mallctl to update cached stats even if the passed in epoch - is 0. - - Fix bin->runcur management to fix a layout policy bug. This bug did not - affect correctness. - - Fix a bug in choose_arena_hard() that potentially caused more arenas to be - initialized than necessary. - - Add missing "opt.lg_tcache_max" mallctl implementation. - - Use glibc allocator hooks to make mixed allocator usage less likely. - - Fix build issues for --disable-tcache. - - Don't mangle pthread_create() when --with-private-namespace is specified. - -* 2.2.5 (November 14, 2011) - - Bug fixes: - - Fix huge_ralloc() race when using mremap(2). This is a serious bug that - could cause memory corruption and/or crashes. - - Fix huge_ralloc() to maintain chunk statistics. - - Fix malloc_stats_print(..., "a") output. - -* 2.2.4 (November 5, 2011) - - Bug fixes: - - Initialize arenas_tsd before using it. This bug existed for 2.2.[0-3], as - well as for --disable-tls builds in earlier releases. - - Do not assume a 4 KiB page size in test/rallocm.c. - -* 2.2.3 (August 31, 2011) - - This version fixes numerous bugs related to heap profiling. - - Bug fixes: - - Fix a prof-related race condition. This bug could cause memory corruption, - but only occurred in non-default configurations (prof_accum:false). - - Fix off-by-one backtracing issues (make sure that prof_alloc_prep() is - excluded from backtraces). - - Fix a prof-related bug in realloc() (only triggered by OOM errors). - - Fix prof-related bugs in allocm() and rallocm(). - - Fix prof_tdata_cleanup() for --disable-tls builds. - - Fix a relative include path, to fix objdir builds. - -* 2.2.2 (July 30, 2011) - - Bug fixes: - - Fix a build error for --disable-tcache. - - Fix assertions in arena_purge() (for real this time). - - Add the --with-private-namespace option. This is a workaround for symbol - conflicts that can inadvertently arise when using static libraries. - -* 2.2.1 (March 30, 2011) - - Bug fixes: - - Implement atomic operations for x86/x64. This fixes compilation failures - for versions of gcc that are still in wide use. - - Fix an assertion in arena_purge(). - -* 2.2.0 (March 22, 2011) - - This version incorporates several improvements to algorithms and data - structures that tend to reduce fragmentation and increase speed. - - New features: - - Add the "stats.cactive" mallctl. - - Update pprof (from google-perftools 1.7). - - Improve backtracing-related configuration logic, and add the - --disable-prof-libgcc option. - - Bug fixes: - - Change default symbol visibility from "internal", to "hidden", which - decreases the overhead of library-internal function calls. - - Fix symbol visibility so that it is also set on OS X. - - Fix a build dependency regression caused by the introduction of the .pic.o - suffix for PIC object files. - - Add missing checks for mutex initialization failures. - - Don't use libgcc-based backtracing except on x64, where it is known to work. - - Fix deadlocks on OS X that were due to memory allocation in - pthread_mutex_lock(). - - Heap profiling-specific fixes: - + Fix memory corruption due to integer overflow in small region index - computation, when using a small enough sample interval that profiling - context pointers are stored in small run headers. - + Fix a bootstrap ordering bug that only occurred with TLS disabled. - + Fix a rallocm() rsize bug. - + Fix error detection bugs for aligned memory allocation. - -* 2.1.3 (March 14, 2011) - - Bug fixes: - - Fix a cpp logic regression (due to the "thread.{de,}allocatedp" mallctl fix - for OS X in 2.1.2). - - Fix a "thread.arena" mallctl bug. - - Fix a thread cache stats merging bug. - -* 2.1.2 (March 2, 2011) - - Bug fixes: - - Fix "thread.{de,}allocatedp" mallctl for OS X. - - Add missing jemalloc.a to build system. - -* 2.1.1 (January 31, 2011) - - Bug fixes: - - Fix aligned huge reallocation (affected allocm()). - - Fix the ALLOCM_LG_ALIGN macro definition. - - Fix a heap dumping deadlock. - - Fix a "thread.arena" mallctl bug. - -* 2.1.0 (December 3, 2010) - - This version incorporates some optimizations that can't quite be considered - bug fixes. - - New features: - - Use Linux's mremap(2) for huge object reallocation when possible. - - Avoid locking in mallctl*() when possible. - - Add the "thread.[de]allocatedp" mallctl's. - - Convert the manual page source from roff to DocBook, and generate both roff - and HTML manuals. - - Bug fixes: - - Fix a crash due to incorrect bootstrap ordering. This only impacted - --enable-debug --enable-dss configurations. - - Fix a minor statistics bug for mallctl("swap.avail", ...). - -* 2.0.1 (October 29, 2010) - - Bug fixes: - - Fix a race condition in heap profiling that could cause undefined behavior - if "opt.prof_accum" were disabled. - - Add missing mutex unlocks for some OOM error paths in the heap profiling - code. - - Fix a compilation error for non-C99 builds. - -* 2.0.0 (October 24, 2010) - - This version focuses on the experimental *allocm() API, and on improved - run-time configuration/introspection. Nonetheless, numerous performance - improvements are also included. - - New features: - - Implement the experimental {,r,s,d}allocm() API, which provides a superset - of the functionality available via malloc(), calloc(), posix_memalign(), - realloc(), malloc_usable_size(), and free(). These functions can be used to - allocate/reallocate aligned zeroed memory, ask for optional extra memory - during reallocation, prevent object movement during reallocation, etc. - - Replace JEMALLOC_OPTIONS/JEMALLOC_PROF_PREFIX with MALLOC_CONF, which is - more human-readable, and more flexible. For example: - JEMALLOC_OPTIONS=AJP - is now: - MALLOC_CONF=abort:true,fill:true,stats_print:true - - Port to Apple OS X. Sponsored by Mozilla. - - Make it possible for the application to control thread-->arena mappings via - the "thread.arena" mallctl. - - Add compile-time support for all TLS-related functionality via pthreads TSD. - This is mainly of interest for OS X, which does not support TLS, but has a - TSD implementation with similar performance. - - Override memalign() and valloc() if they are provided by the system. - - Add the "arenas.purge" mallctl, which can be used to synchronously purge all - dirty unused pages. - - Make cumulative heap profiling data optional, so that it is possible to - limit the amount of memory consumed by heap profiling data structures. - - Add per thread allocation counters that can be accessed via the - "thread.allocated" and "thread.deallocated" mallctls. - - Incompatible changes: - - Remove JEMALLOC_OPTIONS and malloc_options (see MALLOC_CONF above). - - Increase default backtrace depth from 4 to 128 for heap profiling. - - Disable interval-based profile dumps by default. - - Bug fixes: - - Remove bad assertions in fork handler functions. These assertions could - cause aborts for some combinations of configure settings. - - Fix strerror_r() usage to deal with non-standard semantics in GNU libc. - - Fix leak context reporting. This bug tended to cause the number of contexts - to be underreported (though the reported number of objects and bytes were - correct). - - Fix a realloc() bug for large in-place growing reallocation. This bug could - cause memory corruption, but it was hard to trigger. - - Fix an allocation bug for small allocations that could be triggered if - multiple threads raced to create a new run of backing pages. - - Enhance the heap profiler to trigger samples based on usable size, rather - than request size. - - Fix a heap profiling bug due to sometimes losing track of requested object - size for sampled objects. - -* 1.0.3 (August 12, 2010) - - Bug fixes: - - Fix the libunwind-based implementation of stack backtracing (used for heap - profiling). This bug could cause zero-length backtraces to be reported. - - Add a missing mutex unlock in library initialization code. If multiple - threads raced to initialize malloc, some of them could end up permanently - blocked. - -* 1.0.2 (May 11, 2010) - - Bug fixes: - - Fix junk filling of large objects, which could cause memory corruption. - - Add MAP_NORESERVE support for chunk mapping, because otherwise virtual - memory limits could cause swap file configuration to fail. Contributed by - Jordan DeLong. - -* 1.0.1 (April 14, 2010) - - Bug fixes: - - Fix compilation when --enable-fill is specified. - - Fix threads-related profiling bugs that affected accuracy and caused memory - to be leaked during thread exit. - - Fix dirty page purging race conditions that could cause crashes. - - Fix crash in tcache flushing code during thread destruction. - -* 1.0.0 (April 11, 2010) - - This release focuses on speed and run-time introspection. Numerous - algorithmic improvements make this release substantially faster than its - predecessors. - - New features: - - Implement autoconf-based configuration system. - - Add mallctl*(), for the purposes of introspection and run-time - configuration. - - Make it possible for the application to manually flush a thread's cache, via - the "tcache.flush" mallctl. - - Base maximum dirty page count on proportion of active memory. - - Compute various addtional run-time statistics, including per size class - statistics for large objects. - - Expose malloc_stats_print(), which can be called repeatedly by the - application. - - Simplify the malloc_message() signature to only take one string argument, - and incorporate an opaque data pointer argument for use by the application - in combination with malloc_stats_print(). - - Add support for allocation backed by one or more swap files, and allow the - application to disable over-commit if swap files are in use. - - Implement allocation profiling and leak checking. - - Removed features: - - Remove the dynamic arena rebalancing code, since thread-specific caching - reduces its utility. - - Bug fixes: - - Modify chunk allocation to work when address space layout randomization - (ASLR) is in use. - - Fix thread cleanup bugs related to TLS destruction. - - Handle 0-size allocation requests in posix_memalign(). - - Fix a chunk leak. The leaked chunks were never touched, so this impacted - virtual memory usage, but not physical memory usage. - -* linux_2008082[78]a (August 27/28, 2008) - - These snapshot releases are the simple result of incorporating Linux-specific - support into the FreeBSD malloc sources. - --------------------------------------------------------------------------------- -vim:filetype=text:textwidth=80 |