2.2.4

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

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

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

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

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

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

Bug fixes:

• Fix "thread.{de,}allocatedp" mallctl for OS X.
• Add missing jemalloc.a to build system.

2.1.1

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

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

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.