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* Fix EXTRA_CFLAGS to not affect configuration.Jason Evans2016-10-302-5/+4
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* Do not mark malloc_conf as weak on Windows.Jason Evans2016-10-291-1/+1
| | | | | | | This works around malloc_conf not being properly initialized by at least the cygwin toolchain. Prior build system changes to use -Wl,--[no-]whole-archive may be necessary for malloc_conf resolution to work properly as a non-weak symbol (not tested).
* Do not mark malloc_conf as weak for unit tests.Jason Evans2016-10-291-1/+5
| | | | | | | This is generally correct (no need for weak symbols since no jemalloc library is involved in the link phase), and avoids linking problems (apparently unininitialized non-NULL malloc_conf) when using cygwin with gcc.
* Support static linking of jemalloc with glibcDave Watson2016-10-282-0/+34
| | | | | | | | | | | | | | | | | | | | | | | glibc defines its malloc implementation with several weak and strong symbols: strong_alias (__libc_calloc, __calloc) weak_alias (__libc_calloc, calloc) strong_alias (__libc_free, __cfree) weak_alias (__libc_free, cfree) strong_alias (__libc_free, __free) strong_alias (__libc_free, free) strong_alias (__libc_malloc, __malloc) strong_alias (__libc_malloc, malloc) The issue is not with the weak symbols, but that other parts of glibc depend on __libc_malloc explicitly. Defining them in terms of jemalloc API's allows the linker to drop glibc's malloc.o completely from the link, and static linking no longer results in symbol collisions. Another wrinkle: jemalloc during initialization calls sysconf to get the number of CPU's. GLIBC allocates for the first time before setting up isspace (and other related) tables, which are used by sysconf. Instead, use the pthread API to get the number of CPUs with GLIBC, which seems to work. This resolves #442.
* Reduce memory requirements for regression tests.Jason Evans2016-10-283-35/+55
| | | | | | | This is intended to drop memory usage to a level that AppVeyor test instances can handle. This resolves #393.
* Periodically purge in memory-intensive integration tests.Jason Evans2016-10-281-0/+7
| | | | This resolves #393.
* Periodically purge in memory-intensive integration tests.Jason Evans2016-10-283-6/+27
| | | | This resolves #393.
* Fix over-sized allocation of rtree leaf nodes.Jason Evans2016-10-281-1/+1
| | | | | Use the correct level metadata when allocating child nodes so that leaf nodes don't end up over-sized (2^16 elements vs 2^4 elements).
* Uniformly cast mallctl[bymib]() oldp/newp arguments to (void *).Jason Evans2016-10-2825-317/+358
| | | | | This avoids warnings in some cases, and is otherwise generally good hygiene.
* Explicitly cast negative constants meant for use as unsigned.Jason Evans2016-10-281-3/+5
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* Add cast to silence (harmless) conversion warning.Jason Evans2016-10-281-1/+1
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* Avoid negation of unsigned numbers.Jason Evans2016-10-281-2/+2
| | | | | | Rather than relying on two's complement negation for alignment mask generation, use bitwise not and addition. This dodges warnings from MSVC, and should be strength-reduced by compiler optimization anyway.
* Only link with libm (-lm) if necessary.Jason Evans2016-10-282-6/+16
| | | | This fixes warnings when building with MSVC.
* Only use --whole-archive with gcc.Jason Evans2016-10-283-3/+7
| | | | | | | Conditionalize use of --whole-archive on the platform plus compiler, rather than on the ABI. This fixes a regression caused by 7b24c6e5570062495243f1e55131b395adb31e33 (Use --whole-archive when linking integration tests on MinGW.).
* Do not force lazy lock on Windows.Jason Evans2016-10-271-1/+0
| | | | | | | | This reverts 13473c7c66a81a4dc1cf11a97e9c8b1dbb785b64, which was intended to work around bootstrapping issues when linking statically. However, this actually causes problems in various other configurations, so this reversion may force a future fix for the underlying problem, if it still exists.
* Use --whole-archive when linking integration tests on MinGW.Jason Evans2016-10-261-1/+10
| | | | | | | Prior to this change, the malloc_conf weak symbol provided by the jemalloc dynamic library is always used, even if the application provides a malloc_conf symbol. Use the --whole-archive linker option to allow the weak symbol to be overridden.
* Do not (recursively) allocate within tsd_fetch().Jason Evans2016-10-2113-132/+172
| | | | | | | Refactor tsd so that tsdn_fetch() does not trigger allocation, since allocation could cause infinite recursion. This resolves #458.
* Make dss operations lockless.Jason Evans2016-10-1311-147/+131
| | | | | | | | | | | | | | Rather than protecting dss operations with a mutex, use atomic operations. This has negligible impact on synchronization overhead during typical dss allocation, but is a substantial improvement for extent_in_dss() and the newly added extent_dss_mergeable(), which can be called multiple times during extent deallocations. This change also has the advantage of avoiding tsd in deallocation paths associated with purging, which resolves potential deadlocks during thread exit due to attempted tsd resurrection. This resolves #425.
* Add/use adaptive spinning.Jason Evans2016-10-136-2/+66
| | | | | | | | Add spin_t and spin_{init,adaptive}(), which provide a simple abstraction for adaptive spinning. Adaptively spin during busy waits in bootstrapping and rtree node initialization.
* Remove all vestiges of chunks.Jason Evans2016-10-1223-270/+26
| | | | | | | | Remove mallctls: - opt.lg_chunk - stats.cactive This resolves #464.
* Remove ratio-based purging.Jason Evans2016-10-1211-485/+38
| | | | | | | | | | | | | Make decay-based purging the default (and only) mode. Remove associated mallctls: - opt.purge - opt.lg_dirty_mult - arena.<i>.lg_dirty_mult - arenas.lg_dirty_mult - stats.arenas.<i>.lg_dirty_mult This resolves #385.
* Fix and simplify decay-based purging.Jason Evans2016-10-112-69/+69
| | | | | | | | | | | | | | | | | | | | | Simplify decay-based purging attempts to only be triggered when the epoch is advanced, rather than every time purgeable memory increases. In a correctly functioning system (not previously the case; see below), this only causes a behavior difference if during subsequent purge attempts the least recently used (LRU) purgeable memory extent is initially too large to be purged, but that memory is reused between attempts and one or more of the next LRU purgeable memory extents are small enough to be purged. In practice this is an arbitrary behavior change that is within the set of acceptable behaviors. As for the purging fix, assure that arena->decay.ndirty is recorded *after* the epoch advance and associated purging occurs. Prior to this fix, it was possible for purging during epoch advance to cause a substantially underrepresentative (arena->ndirty - arena->decay.ndirty), i.e. the number of dirty pages attributed to the current epoch was too low, and a series of unintended purges could result. This fix is also relevant in the context of the simplification described above, but the bug's impact would be limited to over-purging at epoch advances.
* Fix decay tests to all adapt to nstime_monotonic().Jason Evans2016-10-111-6/+9
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* Do not advance decay epoch when time goes backwards.Jason Evans2016-10-116-6/+63
| | | | | | Instead, move the epoch backward in time. Additionally, add nstime_monotonic() and use it in debug builds to assert that time only goes backward if nstime_update() is using a non-monotonic time source.
* Refactor arena->decay_* into arena->decay.* (arena_decay_t).Jason Evans2016-10-112-84/+91
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* Refine nstime_update().Jason Evans2016-10-105-38/+109
| | | | | | | | | | | | | | | | | | | | | Add missing #include <time.h>. The critical time facilities appear to have been transitively included via unistd.h and sys/time.h, but in principle this omission was capable of having caused clock_gettime(CLOCK_MONOTONIC, ...) to have been overlooked in favor of gettimeofday(), which in turn could cause spurious non-monotonic time updates. Refactor nstime_get() out of nstime_update() and add configure tests for all variants. Add CLOCK_MONOTONIC_RAW support (Linux-specific) and mach_absolute_time() support (OS X-specific). Do not fall back to clock_gettime(CLOCK_REALTIME, ...). This was a fragile Linux-specific workaround, which we're unlikely to use at all now that clock_gettime(CLOCK_MONOTONIC_RAW, ...) is supported, and if we have no choice besides non-monotonic clocks, gettimeofday() is only incrementally worse.
* Reduce "thread.arena" mallctl contention.Jason Evans2016-10-041-3/+1
| | | | This resolves #460.
* Remove a size class assertion from extent_size_quantize_floor().Jason Evans2016-10-031-1/+0
| | | | | Extent coalescence can result in legitimate calls to extent_size_quantize_floor() with size larger than LARGE_MAXCLASS.
* Fix size class overflow bugs.Jason Evans2016-10-034-8/+30
| | | | | | | Avoid calling s2u() on raw extent sizes in extent_recycle(). Clamp psz2ind() (implemented as psz2ind_clamp()) when inserting/removing into/from size-segregated extent heaps.
* Verify extent hook functions receive correct extent_hooks pointer.Jason Evans2016-09-291-17/+52
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* Update extent hook function prototype comments.Jason Evans2016-09-291-13/+14
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* Close file descriptor after reading "/proc/sys/vm/overcommit_memory".Jason Evans2016-09-261-0/+1
| | | | | | | This bug was introduced by c2f970c32b527660a33fa513a76d913c812dcf7c (Modify pages_map() to support mapping uncommitted virtual memory.). This resolves #399.
* use install command determined by configureThomas Köckerbauer2016-09-261-20/+21
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* Readme.txt error for building in the WindowsBai2016-09-261-1/+1
| | | | The command can't work using sh -C sh -c "./autogen.sh CC=cl --enable-lazy-lock=no". Change the position of the colon, the command of autogen work.
* Fix LG_QUANTUM definition for sparc64Eric Le Bihan2016-09-261-1/+1
| | | | | | GCC 4.9.3 cross-compiled for sparc64 defines __sparc_v9__, not __sparc64__ nor __sparcv9. This prevents LG_QUANTUM from being defined properly. Adding this new value to the check solves the issue.
* Formatting fixes.Jason Evans2016-09-261-9/+12
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* Fix a bug in __builtin_unreachable configure checkElliot Ronaghan2016-09-261-1/+1
| | | | | | | In 1167e9e, I accidentally tested je_cv_gcc_builtin_ffsl instead of je_cv_gcc_builtin_unreachable (copy-paste error), which meant that JEMALLOC_INTERNAL_UNREACHABLE was always getting defined as abort even if __builtin_unreachable support was detected.
* Avoid self assignment in tsd_set().Jason Evans2016-09-231-4/+8
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* Add various mutex ownership assertions.Jason Evans2016-09-233-6/+14
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* Fix extent_{before,last,past}() to return page-aligned results.Jason Evans2016-09-231-4/+5
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* Fix large_dalloc_impl() to always lock large_mtx.Jason Evans2016-09-231-4/+7
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* Add new_addr validation in extent_recycle().Jason Evans2016-09-231-6/+28
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* Protect extents_dirty access with extents_mtx.Jason Evans2016-09-225-58/+112
| | | | This fixes race conditions during purging.
* Fix extent_recycle() to exclude other arenas' extents.Jason Evans2016-09-221-1/+2
| | | | | When attempting to recycle an extent at a specified address, check that the extent belongs to the correct arena.
* Fix arena_bind().Qi Wang2016-09-221-6/+7
| | | | | When tsd is not in nominal state (e.g. during thread termination), we should not increment nthreads.
* Fix -Wundef in _MSC_VER check.Josh Gao2016-09-151-1/+1
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* Change html manual encoding to UTF-8.Jason Evans2016-09-123-92/+96
| | | | | | | | | | | This works around GitHub's broken automatic reformatting from ISO-8859-1 to UTF-8 when serving static html. Remove <parameter/> from e.g. <function>malloc<parameter/></function>, add a custom template that does not append parentheses, and manually specify them, e.g. <function>malloc()</function>. This works around apparently broken XSL formatting that causes <code/> to be emitted in html (rather than <code></code>, or better yet, nothing).
* Update project URL.Jason Evans2016-09-123-3/+3
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* Change how the default zone is foundMike Hommey2016-07-081-2/+29
| | | | | | | | | | | | On OSX 10.12, malloc_default_zone returns a special zone that is not present in the list of registered zones. That zone uses a "lite zone" if one is present (apparently enabled when malloc stack logging is enabled), or the first registered zone otherwise. In practice this means unless malloc stack logging is enabled, the first registered zone is the default. So get the list of zones to get the first one, instead of relying on malloc_default_zone.
* Avoid getting the same default zone twice in a row.Mike Hommey2016-07-081-2/+3
| | | | | | | | | | | 847ff22 added a call to malloc_default_zone() before the main loop in register_zone, effectively making malloc_default_zone() called twice without any different outcome expected in the returned result. It is also called once at the beginning, and a second time at the end of the loop block. Instead, call it only once per iteration.
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