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* Remove extraneous parens around return arguments.Jason Evans2017-01-21104-1168/+1161
| | | | This resolves #540.
* Update brace style.Jason Evans2017-01-21119-3572/+2971
| | | | | | | Add braces around single-line blocks, and remove line breaks before function-opening braces. This resolves #537.
* Unify the allocation pathsDavid Goldblatt2017-01-201-392/+505
| | | | | | | | | This unifies the allocation paths for malloc, posix_memalign, aligned_alloc, calloc, memalign, valloc, and mallocx, so that they all share common code where they can. There's more work that could be done here, but I think this is the smallest discrete change in this direction.
* Fix --disable-stats support.Jason Evans2017-01-205-195/+249
| | | | | Fix numerous regressions that were exposed by --disable-stats, both in the core library and in the tests.
* Test JSON output of malloc_stats_print() and fix bugs.Jason Evans2017-01-193-28/+1044
| | | | | | | | Implement and test a JSON validation parser. Use the parser to validate JSON output from malloc_stats_print(), with a significant subset of supported output options. This resolves #551.
* Remove -Werror=declaration-after-statement.Jason Evans2017-01-191-1/+0
| | | | This partially resolves #536.
* Added stats about number of bytes cached in tcache currently.Qi Wang2017-01-184-0/+40
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* Add dummy implementations for most remaining OSX zone allocator functionsMike Hommey2017-01-181-10/+108
| | | | | | | | | | | | | | | | | | | | | | | | | Some system libraries are using malloc_default_zone() and then using some of the malloc_zone_* API. Under normal conditions, those functions check the malloc_zone_t/malloc_introspection_t struct for the values that are allowed to be NULL, so that a NULL deref doesn't happen. As of OSX 10.12, malloc_default_zone() doesn't return the actual default zone anymore, but returns a fake, wrapper zone. The wrapper zone defines all the possible functions in the malloc_zone_t/malloc_introspection_t struct (almost), and calls the function from the registered default zone (jemalloc in our case) on its own. Without checking whether the pointers are NULL. This means that a system library that calls e.g. malloc_zone_batch_malloc(malloc_default_zone(), ...) ends up trying to call jemalloc_zone.batch_malloc, which is NULL, and crash follows. So as of OSX 10.12, the default zone is required to have all the functions available (really, the same as the wrapper zone), even if they do nothing. This is arguably a bug in libsystem_malloc in OSX 10.12, but jemalloc still needs to work in that case.
* Don't rely on OSX SDK malloc/malloc.h for malloc_zone struct definitionsMike Hommey2017-01-184-69/+86
| | | | | | | | | | The SDK jemalloc is built against might be not be the latest for various reasons, but the resulting binary ought to work on newer versions of OSX. In order to ensure this, we need the fullest definitions possible, so copy what we need from the latest version of malloc/malloc.h available on opensource.apple.com.
* Fix prof_realloc() regression.Jason Evans2017-01-176-54/+206
| | | | | | | | | | | | | | Mostly revert the prof_realloc() changes in 498856f44a30b31fe713a18eb2fc7c6ecf3a9f63 (Move slabs out of chunks.) so that prof_free_sampled_object() is called when appropriate. Leave the prof_tctx_[re]set() optimization in place, but add an assertion to verify that all eight cases are correctly handled. Add a comment to make clear the code ordering, so that the regression originally fixed by ea8d97b8978a0c0423f0ed64332463a25b787c3d (Fix prof_{malloc,free}_sample_object() call order in prof_realloc().) is not repeated. This resolves #499.
* Formatting/comment fixes.Jason Evans2017-01-172-3/+2
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* Add nullptr support to sized delete operators.Jason Evans2017-01-172-0/+16
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* Fix style nits.Jason Evans2017-01-171-19/+18
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* Remove redundent stats-merging logic when destroying tcache.Qi Wang2017-01-171-11/+4
| | | | The removed stats merging logic is already taken care of by tcache_flush.
* Remove leading blank lines from function bodies.Jason Evans2017-01-13103-611/+0
| | | | This resolves #535.
* Fix indentation.Jason Evans2017-01-132-4/+4
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* Break up headers into constituent partsDavid Goldblatt2017-01-1294-3614/+3455
| | | | | | | | | | This is part of a broader change to make header files better represent the dependencies between one another (see https://github.com/jemalloc/jemalloc/issues/533). It breaks up component headers into smaller parts that can be made to have a simpler dependency graph. For the autogenerated headers (smoothstep.h and size_classes.h), no splitting was necessary, so I didn't add support to emit multiple headers.
* Remove mb.h, which is unusedDavid Goldblatt2017-01-112-119/+0
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* Use better pre-processor defines for sparc64John Paul Adrian Glaubitz2017-01-111-1/+1
| | | | | | | | Currently, jemalloc detects sparc64 targets by checking whether __sparc64__ is defined. However, this definition is used on BSD targets only. Linux targets define both __sparc__ and __arch64__ for sparc64. Since this also works on BSD, rather use __sparc__ and __arch64__ instead of __sparc64__ to detect sparc64 targets.
* Implement arena.<i>.destroy .Jason Evans2017-01-0716-140/+620
| | | | | | | Add MALLCTL_ARENAS_DESTROYED for accessing destroyed arena stats as an analogue to MALLCTL_ARENAS_ALL. This resolves #382.
* Refactor test extent hook code to be reusable.Jason Evans2017-01-073-348/+366
| | | | | | Move test extent hook code from the extent integration test into a header, and normalize the out-of-band controls and introspection. Also refactor the base unit test to use the header.
* Replace the arenas.initialized mallctl with arena.<i>.initialized .Jason Evans2017-01-074-64/+78
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* Range-check mib[1] --> arena_ind casts.Jason Evans2017-01-072-8/+23
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* Move static ctl_epoch variable into ctl_stats_t (as epoch).Jason Evans2017-01-072-4/+4
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* Refactor ctl_stats_t.Jason Evans2017-01-073-66/+106
| | | | | | | Refactor ctl_stats_t to be a demand-zeroed non-growing data structure. To keep the size from being onerous (~60 MiB) on 32-bit systems, convert the arenas field to contain pointers rather than directly embedded ctl_arena_stats_t elements.
* Rename the arenas.extend mallctl to arenas.create.Jason Evans2017-01-0710-29/+29
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* Add MALLCTL_ARENAS_ALL.Jason Evans2017-01-076-92/+171
| | | | | | | Add the MALLCTL_ARENAS_ALL cpp macro as a fixed index for use in accessing the arena.<i>.{purge,decay,dss} and stats.arenas.<i>.* mallctls, and deprecate access via the arenas.narenas index (to be removed in 6.0.0).
* Reindent.Jason Evans2017-01-071-12/+12
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* Fix locking in arena_dirty_count().Jason Evans2017-01-071-1/+3
| | | | This was a latent bug, since the function is (intentionally) not used.
* Fix allocated_large stats with respect to sampled small allocations.Jason Evans2017-01-071-6/+18
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* Fix arena_large_reset_stats_cancel().Jason Evans2017-01-051-1/+1
| | | | | Decrement ndalloc_large rather than incrementing, in order to cancel out the increment in arena_large_dalloc_stats_update().
* Implement per arena base allocators.Jason Evans2016-12-2718-323/+939
| | | | | | | | | | | | | Add/rename related mallctls: - Add stats.arenas.<i>.base . - Rename stats.arenas.<i>.metadata to stats.arenas.<i>.internal . - Add stats.arenas.<i>.resident . Modify the arenas.extend mallctl to take an optional (extent_hooks_t *) argument so that it is possible for all base allocations to be serviced by the specified extent hooks. This resolves #463.
* Refactor purging and splitting/merging.Jason Evans2016-12-2711-84/+258
| | | | | | | | | | | | | | Split purging into lazy and forced variants. Use the forced variant for zeroing dss. Add support for NULL function pointers as an opt-out mechanism for the dalloc, commit, decommit, purge_lazy, purge_forced, split, and merge fields of extent_hooks_t. Add short-circuiting checks in large_ralloc_no_move_{shrink,expand}() so that no attempt is made if splitting/merging is not supported. This resolves #268.
* Rename arena_decay_t's ndirty to nunpurged.Jason Evans2016-12-272-5/+5
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* Use exponential series to size extents.Jason Evans2016-12-273-31/+198
| | | | | | | | | | If virtual memory is retained, allocate extents such that their sizes form an exponentially growing series. This limits the number of disjoint virtual memory ranges so that extent merging can be effective even if multiple arenas' extent allocation requests are highly interleaved. This resolves #462.
* Add huge page configuration and pages_[no}huge().Jason Evans2016-12-279-6/+141
| | | | | | | | Add the --with-lg-hugepage configure option, but automatically configure LG_HUGEPAGE even if it isn't specified. Add the pages_[no]huge() functions, which toggle huge page state via madvise(..., MADV_[NO]HUGEPAGE) calls.
* Fix JSON-mode output for !config_stats and/or !config_prof cases.Jason Evans2016-12-231-10/+11
| | | | | | | These bugs were introduced by 0ba5b9b6189e16a983d8922d8c5cb6ab421906e8 (Add "J" (JSON) support to malloc_stats_print().), which was backported as b599b32280e1142856b0b96293a71e1684b1ccfb (with the same bugs except the inapplicable "metatata" misspelling) and first released in 4.3.0.
* Simplify arena_slab_regind().Jason Evans2016-12-235-59/+66
| | | | | | | | | Rewrite arena_slab_regind() to provide sufficient constant data for the compiler to perform division strength reduction. This replaces more general manual strength reduction that was implemented before arena_bin_info was compile-time-constant. It would be possible to slightly improve on the compiler-generated division code by taking advantage of range limits that the compiler doesn't know about.
* Restructure *CFLAGS/*CXXFLAGS configuration.Jason Evans2016-12-163-133/+168
| | | | | | | | | | | | | Convert CFLAGS/CXXFLAGS to be concatenations: CFLAGS := CONFIGURE_CFLAGS SPECIFIED_CFLAGS EXTRA_CFLAGS CXXFLAGS := CONFIGURE_CXXFLAGS SPECIFIED_CXXFLAGS EXTRA_CXXFLAGS This ordering makes it possible to override the flags set by the configure script both during and after configuration, with CFLAGS/CXXFLAGS and EXTRA_CFLAGS/EXTRA_CXXFLAGS, respectively. This resolves #504.
* Re-expand the Travis-CI build matrix.Jason Evans2016-12-141-0/+7
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* Update Travis-CI config for C++ integration.Jason Evans2016-12-131-11/+8
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* Add some missing explicit casts.Jason Evans2016-12-131-3/+4
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* jemalloc cpp new/delete bindingsDave Watson2016-12-1313-25/+905
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Adds cpp bindings for jemalloc, along with necessary autoconf settings. This is mostly to add sized deallocation support, which can't be added from C directly. Sized deallocation is ~10% microbench improvement. * Import ax_cxx_compile_stdcxx.m4 from the autoconf repo, seems like the easiest way to get c++14 detection. * Adds various other changes, like CXXFLAGS, to configure.ac. * Adds new rules to Makefile.in for src/jemalloc-cpp.cpp, and a basic unittest. * Both new and delete are overridden, to ensure jemalloc is used for both. * TODO future enhancement of avoiding extra PLT thunks for new and delete - sdallocx and malloc are publicly exported jemalloc symbols, using an alias would link them directly. Unfortunately, was having trouble getting it to play nice with jemalloc's namespace support. Testing: Tested gcc 4.8, gcc 5, gcc 5.2, clang 4.0. Only gcc >= 5 has sized deallocation support, verified that the rest build correctly. Tested mac osx and Centos. Tested --with-jemalloc-prefix and --without-export. This resolves #202.
* Add a_type parameter to qr_{meld,split}().Jason Evans2016-12-133-11/+11
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* Update ChangeLog for 4.4.0.Jason Evans2016-12-041-0/+27
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* Add --disable-syscall.Jason Evans2016-12-045-15/+33
| | | | This resolves #517.
* Update configure cache file example.Jason Evans2016-11-301-12/+6
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* Implement a more reliable detection scheme for os_unfair_lock.John Szakmeister2016-11-231-0/+5
| | | | | | | | | | | | The core issue here is the weak linking of the symbol, and in certain environments--for instance, using the latest Xcode (8.1) with the latest SDK (10.12)--os_unfair_lock may resolve even though you're compiling on a host that doesn't support it (10.11). We can use the availability macros to circumvent this problem, and detect that we're not compiling for a target that is going to support them and error out at compile time. The other alternative is to do a runtime check, but that presents issues for cross-compiling.
* Enable overriding JEMALLOC_{ALLOC,FREE}_JUNK.Jason Evans2016-11-221-2/+6
| | | | This resolves #509.
* Style fixes.Jason Evans2016-11-221-6/+6
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