Commit Graph

955 Commits

Author SHA1 Message Date
Jason Evans
3c26a7d68e Remove malloc_swap_enable().
Remove malloc_swap_enable(), which was obsoleted by the "swap.fds"
mallctl.  The prototype for malloc_swap_enable() was removed from
jemalloc/jemalloc.h, but the function itself was accidentally left in
place.
2010-10-02 12:04:41 -07:00
Jason Evans
d65cdfe233 Update pprof from google-perftools 1.6.
Import updated pprof from google-perftools 1.6, with a patch applied to
fix a division by zero error (see
http://code.google.com/p/google-perftools/issues/detail?id=235).
2010-10-02 11:31:36 -07:00
Jason Evans
c2fc8c8b3a Use offsetof() when sizing dynamic structures.
Base dynamic structure size on offsetof(), rather than subtracting the
size of the dynamic structure member.  Results could differ on systems
with strict data structure alignment requirements.
2010-10-01 18:02:43 -07:00
Jason Evans
3377ffa1f4 Change CHUNK_MAP_ZEROED to CHUNK_MAP_UNZEROED.
Invert the chunk map bit that tracks whether a page is zeroed, so that
for zeroed arena chunks, the interior of the page map does not need to
be initialized (as it consists entirely of zero bytes).
2010-10-01 17:53:37 -07:00
Jason Evans
7393f44ff0 Omit chunk header in arena chunk map.
Omit the first map_bias elements of the map in arena_chunk_t.  This
avoids barely spilling over into an extra chunk header page for common
chunk sizes.
2010-10-01 17:35:43 -07:00
Jason Evans
37dab02e52 Disable interval-based profile dumps by default.
It is common to have to specify something like JEMALLOC_OPTIONS=F31i,
because interval-based dumps are often unuseful or too expensive.
Therefore, disable interval-based dumps by default.  To get the previous
default behavior it is now necessary to specify 31I as part of the
options.
2010-09-30 17:10:17 -07:00
Jason Evans
6005f0710c Add the "arenas.purge" mallctl. 2010-09-30 16:55:08 -07:00
Jason Evans
075e77cad4 Fix compiler warnings and errors.
Use INT_MAX instead of MAX_INT in ALLOCM_ALIGN(), and #include
<limits.h> in order to get its definition.

Modify prof code related to hash tables to avoid aliasing warnings from
gcc 4.1.2 (gcc 4.4.0 and 4.4.3 do not warn).
2010-09-20 19:53:25 -07:00
Jason Evans
355b438c85 Fix compiler warnings.
Add --enable-cc-silence, which can be used to silence harmless warnings.

Fix an aliasing bug in ckh_pointer_hash().
2010-09-20 19:20:48 -07:00
Jason Evans
6a0d2918ce Add memalign() and valloc() overrides.
If memalign() and/or valloc() are present on the system, override them
in order to avoid mixed allocator usage.
2010-09-20 16:52:41 -07:00
Jason Evans
a09f55c87d Wrap strerror_r().
Create the buferror() function, which wraps strerror_r().  This is
necessary because glibc provides a non-standard strerror_r().
2010-09-20 16:05:41 -07:00
Jason Evans
28177d466f Remove bad assertions in malloc_{pre,post}fork().
Remove assertions that malloc_{pre,post}fork() are only called if
threading is enabled.  This was true of these functions in the context
of FreeBSD's libc, but now the functions are called unconditionally as a
result of registering them with pthread_atfork().
2010-09-20 11:24:24 -07:00
Jason Evans
79d660d35d Store full git GID in VERSION. 2010-09-17 17:38:24 -07:00
Jason Evans
a094babe33 Add gcc attributes for *allocm() prototypes. 2010-09-17 17:35:42 -07:00
Jason Evans
8e3c3c61b5 Add {,r,s,d}allocm().
Add allocm(), rallocm(), sallocm(), and dallocm(), which are a
functional superset of malloc(), calloc(), posix_memalign(),
malloc_usable_size(), and free().
2010-09-17 15:46:18 -07:00
Jason Evans
4cc6a60a4f Update modification date in man page. 2010-09-11 23:40:24 -07:00
Jason Evans
8d7a94b275 Fix porting regressions.
Fix new build failures and test failures on Linux that were introduced
by the port to OS X.
2010-09-11 23:38:12 -07:00
Jason Evans
7e11b389aa Move size class table to man page.
Move the table of size classes from jemalloc.c to the manual page.  When
manually formatting the manual page, it is now necessary to use:

    nroff -man -t jemalloc.3
2010-09-11 22:52:16 -07:00
Jason Evans
58a6f5c9be Add posix_memalign test. 2010-09-11 20:59:16 -07:00
Jason Evans
2dbecf1f62 Port to Mac OS X.
Add Mac OS X support, based in large part on the OS X support in
Mozilla's version of jemalloc.
2010-09-11 18:20:16 -07:00
Jason Evans
b267d0f86a Add the thread.arena mallctl.
Make it possible for each thread to manage which arena it is associated
with.

Implement the 'tests' and 'check' build targets.
2010-08-13 17:36:00 -07:00
Jason Evans
e139ab8b4f Merge branch 'dev' 2010-08-12 12:11:58 -07:00
Jason Evans
dcd15098a8 Move assert() calls up in arena_run_reg_alloc().
Move assert() calls up in arena_run_reg_alloc(), so that a corrupt
pointer will likely be caught by an assertion *before* it is
dereferenced.
2010-08-05 12:13:42 -07:00
Jason Evans
2541e1b083 Add a missing mutex unlock in malloc_init_hard().
If multiple threads race to initialize malloc, the loser(s) busy-wait
until initialization is complete.  Add a missing mutex lock so that the
loser(s) properly release the initialization mutex.  Under some
race conditions, this flaw could have caused one or more threads to
become permanently blocked.

Reported by Terrell Magee.
2010-07-22 11:35:59 -07:00
Jason Evans
b43b7750a6 Fix the libunwind version of prof_backtrace().
Fix the libunwind version of prof_backtrace() to set the backtrace depth
for all possible code paths.  This fixes the zero-length backtrace
problem when using libunwind.
2010-06-04 15:10:43 -07:00
Jason Evans
e13243eb63 Merge branch 'dev' 2010-05-11 18:24:19 -07:00
Jason Evans
7013d10a9e Avoid unnecessary isalloc() calls.
When heap profiling is enabled but deactivated, there is no need to call
isalloc(ptr) in prof_{malloc,realloc}().  Avoid these calls, so that
profiling overhead under such conditions is negligible.
2010-05-11 18:17:02 -07:00
Jason Evans
ed3d152ea0 Fix next_arena initialization.
If there is more than one arena, initialize next_arena so that the
first and second threads to allocate memory use arenas 0 and 1, rather
than both using arena 0.
2010-05-11 12:00:22 -07:00
Jordan DeLong
2206e1acc1 Add MAP_NORESERVE support.
Add MAP_NORESERVE to the chunk_mmap() case being used by
chunk_swap_enable(), if the system supports it.
2010-05-11 11:46:53 -07:00
Jason Evans
ecea0f6125 Fix junk filling of cached large objects.
Use the size argument to tcache_dalloc_large() to control the number of
bytes set to 0x5a when junk filling is enabled, rather than accessing a
non-existent arena bin.  This bug was capable of corrupting an
arbitrarily large memory region, depending on what followed the arena
data structure in memory (typically zeroed memory, another arena_t, or a
red-black tree node for a huge object).
2010-04-28 12:00:59 -07:00
Jason Evans
1af6ac42e3 Merge branch 'dev' 2010-04-14 15:07:37 -07:00
Jason Evans
5055f4516c Fix tcache crash during thread cleanup.
Properly maintain tcache_bin_t's avail pointer such that it is NULL if
no objects are cached.  This only caused problems during thread cache
destruction, since cache flushing otherwise never occurs on an empty
bin.
2010-04-14 11:27:13 -07:00
Jason Evans
38cda690dd Fix profiling regression caused by bugfix.
Properly set the context associated with each allocated object, even
when the object is not sampled.

Remove debug print code that slipped in.
2010-04-14 11:24:45 -07:00
Jason Evans
6d68ed6492 Remove autom4te.cache in distclean (not relclean). 2010-04-13 22:01:55 -07:00
Jason Evans
8d4203c72d Fix arena chunk purge/dealloc race conditions.
Fix arena_chunk_dealloc() to put the new spare in a consistent state before
dropping the arena mutex to deallocate the previous spare.

Fix arena_run_dalloc() to insert a newly dirtied chunk into the
chunks_dirty list before potentially deallocating the chunk, so that dirty
page accounting is self-consistent.
2010-04-13 21:17:18 -07:00
Jason Evans
5065156f3f Fix threads-related profiling bugs.
Initialize bt2cnt_tsd so that cleanup at thread exit actually happens.

Associate (prof_ctx_t *) with allocated objects, rather than
(prof_thr_cnt_t *).  Each thread must always operate on its own
(prof_thr_cnt_t *), and an object may outlive the thread that allocated it.
2010-04-13 21:17:11 -07:00
Jason Evans
1bb602125c Update stale JEMALLOC_FILL code.
Fix a compilation error due to stale data structure access code in
tcache_dalloc_large() for junk filling.
2010-04-13 21:17:02 -07:00
Jason Evans
5523399169 Update documentation. 2010-04-11 19:02:43 -07:00
Jason Evans
5fe764f83f Generalize ExtractSymbols optimization (pprof).
Generalize ExtractSymbols to handle all cases of library address overlap
with the main binary.
2010-04-08 23:23:53 -07:00
Jason Evans
799ca0b68d Revert re-addition of purge_lock.
Linux kernels have been capable of concurrent page table access since
2.6.27, so this hack is not necessary for modern kernels.
2010-04-08 20:31:58 -07:00
Jason Evans
68f91893bd Fix P/p reporting in stats_print().
Now that JEMALLOC_OPTIONS=P isn't the only way to cause stats_print() to
be called, opt_stats_print must actually be checked when reporting the
state of the P/p option.
2010-04-08 19:14:51 -07:00
Jason Evans
3395860921 Don't build with -march=native.
Don't build with -march=native by default, because the generated code
may perform especially poorly on ABI-compatible, but internally
different, systems.
2010-04-07 23:41:00 -07:00
Jason Evans
0656ec0eb4 Fix build system problems.
Split library build rules up so that parallel building works.

Fix autoconf-related dependencies.

Remove obsolete JEMALLOC_VERSION definition.
2010-04-07 23:37:35 -07:00
Jason Evans
af366593a4 Improve ExtractSymbols (pprof).
Iterated downward through both libraries and PCs.  This allows PCs
to resolve even when library address ranges overlap.
2010-04-07 19:52:15 -07:00
Jason Evans
7cb5b5ea21 Fix error path in prof_dump().
Remove a duplicate prof_leave() call in an error path through
prof_dump().
2010-04-06 12:21:46 -07:00
Jason Evans
fd88bd577e Report E/e option state in jemalloc_stats_print(). 2010-04-06 12:20:23 -07:00
Jason Evans
ec5344eba2 Optimize ExtractSymbols (pprof).
Modify ExtractSymbols to operate on sorted PCs and libraries, in order
to reduce computational complexity from O(N*M) to O(N+M).
2010-04-02 18:49:34 -07:00
Jason Evans
a53610130d Use addr2line only for --line option (pprof). 2010-04-02 18:48:27 -07:00
Jason Evans
a91f210929 Import pprof from google-perftools, svn r91.
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.
2010-04-02 14:41:02 -07:00
Jason Evans
18ad8234b6 Don't disable leak reporting due to sampling.
Leak reporting is useful even if sampling is enabled; some leaks may not
be reported, but those reported are still genuine leaks.
2010-04-02 13:48:39 -07:00