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* Add the "stats.cactive" mallctl.Jason Evans2011-03-191-7/+8
| | | | | | Add the "stats.cactive" mallctl, which can be used to efficiently and repeatedly query approximately how much active memory the application is utilizing.
* Use bitmaps to track small regions.Jason Evans2011-03-171-3/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The previous free list implementation, which embedded singly linked lists in available regions, had the unfortunate side effect of causing many cache misses during thread cache fills. Fix this in two places: - arena_run_t: Use a new bitmap implementation to track which regions are available. Furthermore, revert to preferring the lowest available region (as jemalloc did with its old bitmap-based approach). - tcache_t: Move read-only tcache_bin_t metadata into tcache_bin_info_t, and add a contiguous array of pointers to tcache_t in order to track cached objects. This substantially increases the size of tcache_t, but results in much higher data locality for common tcache operations. As a side benefit, it is again possible to efficiently flush the least recently used cached objects, so this change changes flushing from MRU to LRU. The new bitmap implementation uses a multi-level summary approach to make finding the lowest available region very fast. In practice, bitmaps only have one or two levels, though the implementation is general enough to handle extremely large bitmaps, mainly so that large page sizes can still be entertained. Fix tcache_bin_flush_large() to always flush statistics, in the same way that tcache_bin_flush_small() was recently fixed. Use JEMALLOC_DEBUG rather than NDEBUG. Add dassert(), and use it for debug-only asserts.
* Fix a build dependency regression.Jason Evans2011-03-151-1/+2
| | | | | | | Fix the automatic header dependency generation to handle the .pic.o suffix. This regression was due to: Build both PIC and no PIC static libraries af5d6987f829ccd6e14dd1f57586cfb072a533c7
* Build both PIC and no PIC static librariesArun Sharma2011-03-021-6/+19
| | | | | | | | | | When jemalloc is linked into an executable (as opposed to a shared library), compiling with -fno-pic can have significant advantages, mainly because we don't have to go throught the GOT (global offset table). Users who want to link jemalloc into a shared library that could be dlopened need to link with libjemalloc_pic.a or libjemalloc.so.
* Fix "thread.{de,}allocatedp" mallctl.Jason Evans2011-02-141-0/+2
| | | | | | | | | For the non-TLS case (as on OS X), if the "thread.{de,}allocatedp" mallctl was called before any allocation occurred for that thread, the TSD was still NULL, thus putting the application at risk of dereferencing NULL. Fix this by refactoring the initialization code, and making it part of the conditional logic for all per thread allocation counter accesses.
* Use mremap(2) for huge realloc().Jason Evans2010-12-011-1/+1
| | | | | | | | | | If mremap(2) is available and supports MREMAP_FIXED, use it for huge realloc(). Initialize rtree later during bootstrapping, so that --enable-debug --enable-dss works. Fix a minor swap_avail stats bug.
* Convert man page from roff to DocBook.Jason Evans2010-11-271-5/+36
| | | | | | | Convert the man page source from roff to DocBook, and generate html and roff output. Modify the build system such that the documentation can be built as part of the release process, so that users need not have DocBook tools installed.
* Bump library version number.Jason Evans2010-10-241-1/+1
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* Add per thread allocation counters, and enhance heap sampling.Jason Evans2010-10-211-1/+2
| | | | | | | | | | | | | | | | | | | Add the "thread.allocated" and "thread.deallocated" mallctls, which can be used to query the total number of bytes ever allocated/deallocated by the calling thread. Add s2u() and sa2u(), which can be used to compute the usable size that will result from an allocation request of a particular size/alignment. Re-factor ipalloc() to use sa2u(). Enhance the heap profiler to trigger samples based on usable size, rather than request size. This has a subtle, but important, impact on the accuracy of heap sampling. For example, previous to this change, 16- and 17-byte objects were sampled at nearly the same rate, but 17-byte objects actually consume 32 bytes each. Therefore it was possible for the sample to be somewhat skewed compared to actual memory usage of the allocated objects.
* Fix tests build when --with-install-suffix is set.Jason Evans2010-10-071-2/+2
| | | | | | Add test/jemalloc_test.h.in, which is processed to include jemalloc/jemalloc@install_suffix@.h, so that test programs can include it without worrying about the install suffix.
* Add {,r,s,d}allocm().Jason Evans2010-09-171-1/+2
| | | | | | Add allocm(), rallocm(), sallocm(), and dallocm(), which are a functional superset of malloc(), calloc(), posix_memalign(), malloc_usable_size(), and free().
* Add posix_memalign test.Jason Evans2010-09-121-1/+1
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* Port to Mac OS X.Jason Evans2010-09-121-17/+28
| | | | | Add Mac OS X support, based in large part on the OS X support in Mozilla's version of jemalloc.
* Add the thread.arena mallctl.Jason Evans2010-08-141-2/+48
| | | | | | | Make it possible for each thread to manage which arena it is associated with. Implement the 'tests' and 'check' build targets.
* Remove autom4te.cache in distclean (not relclean).Jason Evans2010-04-141-1/+1
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* Fix build system problems.Jason Evans2010-04-081-19/+14
| | | | | | | | Split library build rules up so that parallel building works. Fix autoconf-related dependencies. Remove obsolete JEMALLOC_VERSION definition.
* Import pprof from google-perftools, svn r91.Jason Evans2010-04-021-1/+10
| | | | | | | | | | | | Fix divide-by-zero error in pprof. It is possible for sample contexts to currently have no associated objects, but the cumulative statistics are still useful, depending on how the user invokes pprof. Since jemalloc intentionally does not filter such contexts, take care not to divide by 0 when re-scaling for v2 heap sampling. Install pprof as part of 'make install'. Update pprof documentation.
* Fix various config/build issues.Jason Evans2010-03-041-7/+14
| | | | | | | | | | | | | Don't look for a shared libunwind if --with-static-libunwind is specified. Set SONAME when linking the shared libjemalloc. Add DESTDIR support. Add install_{include,lib/man} build targets. Clean up compiler flag configuration.
* Add release versioning support.0.0.0Jason Evans2010-03-021-0/+1
| | | | | | | Base version string on 'git describe --long', and provide cpp macros in jemalloc.h. Add the version mallctl.
* Restructure source tree.Jason Evans2010-02-111-27/+13
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* Remove tracing (--enable-trace).Jason Evans2010-02-111-11/+2
| | | | | | | Remove all functionality related to tracing. This functionality was useful for understanding memory fragmentation during early algorithmic design of jemalloc, but it had little utility for non-trivial applications, due to the sheer volume of data written to disk.
* Implement allocation profiling and leack checking.Jason Evans2010-02-101-4/+6
| | | | | | | | | | | | | | Add the --enable-prof and --enable-prof-libunwind configure options. Add the B/b, F/f, I/i, L/l, and U/u JEMALLOC_OPTIONS. Interval-based profile dump triggering is not yet implemented. Add supporting generic code: * Add memory barriers. * Add prn (LCG PRNG). * Add hash (Murmur hash function). * Add ckh (cuckoo hash tables).
* Implement mallctl{nametomib,bymib}().Jason Evans2010-01-271-4/+4
| | | | | | | | | | | | | Replace chunk stats code that was missing locking; this fixes a race condition that could corrupt chunk statistics. Converting malloc_stats_print() to use mallctl*(). Add a missing semicolon in th DSS code. Convert malloc_tcache_flush() to a mallctl. Convert malloc_swap_enable() to a set of mallctl's.
* Add the --enable-swap configure option.Jason Evans2010-01-241-3/+5
| | | | | | | | Add malloc_swap_enable(). Add the O/o JEMALLOC_OPTIONS flags, which control memory overcommit. Fix mapped memory stats reporting for arenas.
* Add the --with-install-suffix configure option.Jason Evans2010-01-171-21/+20
| | | | Fix some bugs in the Makefile's install target.
* Refactor jemalloc.c into multiple source files.Jason Evans2010-01-161-6/+10
| | | | | | | | | Fix a stats bug in large object curruns accounting. Replace tcache_bin_fill() with arena_tcache_fill(), and fix a bug in an OOM error path. Fix API name mangling to coexist with __attribute__((malloc)).
* Fix some other minor build system bugs.Jason Evans2010-01-041-8/+15
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* Build libjemalloc_pic.a.Jason Evans2010-01-031-4/+7
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* Fix the 'clean' build target to delete binaries.Jason Evans2009-12-291-0/+1
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* Integrate mtrgraph and mtrplay.Jason Evans2009-07-021-1/+19
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* Clean up the manpage and conditionalize various portions according to howJason Evans2009-06-261-13/+14
| | | | | | | | | | | | jemalloc is configured. Modify arena_malloc() API to avoid unnecessary choose_arena() calls. Remove unnecessary code from choose_arena(). Enable lazy-lock by default, now that choose_arena() is both faster and out of the critical path. Implement objdir support in the build system.
* Implement configuration system.Jason Evans2009-06-241-0/+122
Implement minimal Makefile. Make compile-time-optional jemalloc features controllable via configure options (debug, stats, tiny, mag, balance, dss). Conditionally exclude most of the opt_* run-time options, based on configure options (fill, xmalloc, sysv). Implement optional --enable-dynamic-page-shift. Implement optional --enable-lazy-lock. Re-order malloc_init_hard() and use the malloc_initializer variable to support recursive allocation in malloc_ncpus(). Add mag_rack_tsd in order to receive notifications of thread termination. Add jemalloc.h.
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