Commit Graph

1340 Commits

Author SHA1 Message Date
Mike Hommey
f4d0fc310e Unbreak mac after commit 4e2e3dd 2012-03-20 11:48:42 -07:00
Jason Evans
650285d5be Generalize dlsym() configuration.
Generalize dlsym() configuration to succeed if dlsym() is in libc rather
than libdl.
2012-03-19 10:25:27 -07:00
Jason Evans
e24c7af35d Invert NO_TLS to JEMALLOC_TLS. 2012-03-19 10:21:17 -07:00
Jason Evans
f3e139a1ef Use AC_LINK_IFELSE() rather than AC_RUN_IFELSE() in JE_COMPILABLE().
Reported by Mike Hommey.
2012-03-19 09:54:20 -07:00
Jason Evans
7091b415bb Fix various documentation formatting regressions. 2012-03-19 09:36:44 -07:00
Jason Evans
e7b8fa18d2 Rename the "tcache.flush" mallctl to "thread.tcache.flush". 2012-03-16 17:09:32 -07:00
Jason Evans
39006f9907 Look for pthreads functionality in libc.
If there is no libpthread, look for pthreads functionality in libc
before failing to configure pthreads.  This is necessary on at least the
Android platform.

Reported by Mike Hommey.
2012-03-16 16:57:02 -07:00
Jason Evans
6508bc6931 Remove #include <sys/sysctl.h>.
Remove #include <sys/sysctl.h>, which is no longer needed (now using
sysconf(3) to get number of CPUs).
2012-03-15 17:07:42 -07:00
Jason Evans
4e2e3dd9cf Fix fork-related bugs.
Acquire/release arena bin locks as part of the prefork/postfork.  This
bug made deadlock in the child between fork and exec a possibility.

Split jemalloc_postfork() into jemalloc_postfork_{parent,child}() so
that the child can reinitialize mutexes rather than unlocking them.  In
practice, this bug tended not to cause problems.
2012-03-13 16:31:41 -07:00
Jason Evans
824d34e5b7 Modify malloc_vsnprintf() validation code.
Modify malloc_vsnprintf() validation code to verify that output is
identical to vsnprintf() output, even if both outputs are truncated due
to buffer exhaustion.
2012-03-13 13:19:04 -07:00
Jason Evans
0a0bbf63e5 Implement aligned_alloc().
Implement aligned_alloc(), which was added in the C11 standard.  The
function is weakly specified to the point that a minimally compliant
implementation would be painful to use (size must be an integral
multiple of alignment!), which in practice makes posix_memalign() a
safer choice.
2012-03-13 12:55:21 -07:00
Jason Evans
4c2faa8a7c Fix a regression in JE_COMPILABLE().
Revert JE_COMPILABLE() so that it detects link errors.  Cross-compiling
should still work as long as a valid configure cache is provided.

Clean up some comments/whitespace.
2012-03-13 11:09:23 -07:00
Jason Evans
eb2398106f Fix malloc_stats_print() option support.
Fix malloc_stats_print() to honor 'b' and 'l' in the opts parameter.
2012-03-13 08:46:12 -07:00
Jason Evans
025d861186 Update config.guess and config.sub. 2012-03-12 15:57:24 -07:00
Jason Evans
08fc3b2d51 Fix --with-mangling/--with-jemalloc-prefix interaction.
Fix --with-mangling to remove mangled symbols from the set of functions
to apply a prefix to.  Prior to this change, the interaction was correct
with autoconf 2.59, but incorrect with autoconf 2.65.
2012-03-12 15:07:53 -07:00
Jason Evans
2bb6c7a632 s/PRIx64/PRIxPTR/ for uintptr_t printf() argument. 2012-03-12 13:38:55 -07:00
Jason Evans
125b93e43f Remove bashism.
Submitted by Mike Hommey.
2012-03-12 11:33:59 -07:00
Jason Evans
7cca608575 Remove extra '}'. 2012-03-12 11:31:54 -07:00
Jason Evans
d81e4bdd5c Implement malloc_vsnprintf().
Implement malloc_vsnprintf() (a subset of vsnprintf(3)) as well as
several other printing functions based on it, so that formatted printing
can be relied upon without concern for inducing a dependency on floating
point runtime support.  Replace malloc_write() calls with
malloc_*printf() where doing so simplifies the code.

Add name mangling for library-private symbols in the data and BSS
sections.  Adjust CONF_HANDLE_*() macros in malloc_conf_init() to expose
all opt_* variable use to cpp so that proper mangling occurs.
2012-03-07 16:19:19 -08:00
Jason Evans
4507f34628 Remove the lg_tcache_gc_sweep option.
Remove the lg_tcache_gc_sweep option, because it is no longer
very useful.  Prior to the addition of dynamic adjustment of tcache fill
count, it was possible for fill/flush overhead to be a problem, but this
problem no longer occurs.
2012-03-05 14:34:37 -08:00
Jason Evans
b8c8be7f8a Use UINT64_C() rather than LLU for 64-bit constants. 2012-03-05 12:26:26 -08:00
Jason Evans
3492daf1ce Add SH4 and mips architecture support.
Submitted by Andreas Vinsander.
2012-03-05 12:16:57 -08:00
Jason Evans
6684cacfa8 Tweak configure.ac to support cross-compiling.
Submitted by Andreas Vinsander.
2012-03-05 12:15:36 -08:00
Jason Evans
c71b9946ce Unify license.
Update Facebook's software license (with permission from Facebook) to
merge with that of the other copyright holders.
2012-03-04 10:46:12 -08:00
Jason Evans
1af52cfe64 Update copyright dates. 2012-03-02 17:51:26 -08:00
Jason Evans
7e77eaffff Add the --disable-experimental option. 2012-03-02 17:47:37 -08:00
Jason Evans
7b398aca3b Add fine-grained build/install targets. 2012-03-02 16:38:37 -08:00
Jason Evans
84f7cdb0c5 Rename prn to prng.
Rename prn to prng so that Windows doesn't choke when trying to create
a file named prn.h.
2012-03-02 15:59:45 -08:00
Jason Evans
62320b8551 Reorder macros. 2012-03-01 17:53:16 -08:00
Jason Evans
0a5489e37d Add --with-mangling.
Add the --with-mangling configure option, which can be used to specify
name mangling on a per public symbol basis that takes precedence over
--with-jemalloc-prefix.

Expose the memalign() and valloc() overrides even if
--with-jemalloc-prefix is specified.  This change does no real harm, and
simplifies the code.
2012-03-01 17:19:20 -08:00
Jason Evans
166a745b39 Simplify zone_good_size().
Simplify zone_good_size() to avoid memory allocation.

Submitted by Mike Hommey.
2012-02-29 13:03:29 -08:00
Jason Evans
7e15dab94d Add nallocm().
Add nallocm(), which computes the real allocation size that would result
from the corresponding allocm() call.  nallocm() is a functional
superset of OS X's malloc_good_size(), in that it takes alignment
constraints into account.
2012-02-29 12:56:37 -08:00
Jason Evans
4bb0983013 Use glibc allocator hooks.
When jemalloc is used as a libc malloc replacement (i.e. not prefixed),
some particular setups may end up inconsistently calling malloc from
libc and free from jemalloc, or the other way around.

glibc provides hooks to make its functions use alternative
implementations.  Use them.

Submitted by Karl Tomlinson and Mike Hommey.
2012-02-29 10:37:27 -08:00
Jason Evans
5965631636 Do not enforce minimum alignment in memalign().
Do not enforce minimum alignment in memalign().  This is a non-standard
function, and there is disagreement over whether to enforce minimum
alignment.  Solaris documentation (whence memalign() originated) says
that minimum alignment is required:

  The value of alignment must be a power of two and must be greater than
  or equal  to  the size of a word.

However, Linux's manual page says in its NOTES section:

  memalign() may not check that the boundary parameter is correct.

This is descriptive rather than prescriptive, but applications with
bad assumptions about memalign() exist, so be as forgiving as possible.

Reported by Mike Hommey.
2012-02-28 21:37:38 -08:00
Jason Evans
93c023d181 Remove unused variables in stats_print().
Submitted by Mike Hommey.
2012-02-28 21:13:12 -08:00
Jason Evans
bdcadf41e9 Remove unused variable in arena_run_split().
Submitted by Mike Hommey.
2012-02-28 21:11:03 -08:00
Jason Evans
3add8d8cda Remove unused variables in tcache_dalloc_large().
Submitted by Mike Hommey.
2012-02-28 21:08:19 -08:00
Jason Evans
777c191485 Enable support for junk/zero filling by default. 2012-02-28 20:49:22 -08:00
Jason Evans
d073a32109 Enable the stats configuration option by default. 2012-02-28 20:41:16 -08:00
Jason Evans
c90ad71237 Remove the sysv option. 2012-02-28 20:31:37 -08:00
Jason Evans
f081b88dfb Fix realloc(p, 0) to act like free(p).
Reported by Yoni Londer.
2012-02-28 20:24:05 -08:00
Jason Evans
b172610317 Simplify small size class infrastructure.
Program-generate small size class tables for all valid combinations of
LG_TINY_MIN, LG_QUANTUM, and PAGE_SHIFT.  Use the appropriate table to generate
all relevant data structures, and remove the distinction between
tiny/quantum/cacheline/subpage bins.

Remove --enable-dynamic-page-shift.  This option didn't prove useful in
practice, and it prevented optimizations.

Add Tilera architecture support.
2012-02-28 16:50:47 -08:00
Jason Evans
5389146191 Remove the opt.lg_prof_bt_max option.
Remove opt.lg_prof_bt_max, and hard code it to 7.  The original
intention of this option was to enable faster backtracing by limiting
backtrace depth.  However, this makes graphical pprof output very
difficult to interpret.  In practice, decreasing sampling frequency is a
better mechanism for limiting profiling overhead.
2012-02-13 18:41:36 -08:00
Jason Evans
0b526ff94d Remove the opt.lg_prof_tcmax option.
Remove the opt.lg_prof_tcmax option and hard-code a cache size of 1024.
This setting is something that users just shouldn't have to worry about.
If lock contention actually ends up being a problem, the simple solution
available to the user is to reduce sampling frequency.
2012-02-13 18:04:26 -08:00
Jason Evans
e7a1058aaa Fix bin->runcur management.
Fix an interaction between arena_dissociate_bin_run() and
arena_bin_lower_run() that made it possible for bin->runcur to point to
a run other than the lowest non-full run.  This bug violated jemalloc's
layout policy, but did not affect correctness.
2012-02-13 17:36:52 -08:00
Jason Evans
746868929a Remove highruns statistics. 2012-02-13 15:18:19 -08:00
Jason Evans
ef8897b4b9 Make 8-byte tiny size class non-optional.
When tiny size class support was first added, it was intended to support
truly tiny size classes (even 2 bytes).  However, this wasn't very
useful in practice, so the minimum tiny size class has been limited to
sizeof(void *) for a long time now.  This is too small to be standards
compliant, but other commonly used malloc implementations do not even
bother using a 16-byte quantum  on systems with vector units (SSE2+,
AltiVEC, etc.).  As such, it is safe in practice to support an 8-byte
tiny size class on 64-bit systems that support 16-byte types.
2012-02-13 15:03:59 -08:00
Jason Evans
0fee70d718 Do not enable lazy locking by default.
Do not enable lazy locking by default, because:
- It's fragile (applications can subvert detection of multi-threaded
  mode).
- Thread caching amortizes locking overhead in the default
  configuration.
2012-02-13 12:36:11 -08:00
Jason Evans
6ffbbeb5d6 Silence compiler warnings. 2012-02-13 12:31:30 -08:00
Jason Evans
962463d9b5 Streamline tcache-related malloc/free fast paths.
tcache_get() is inlined, so do the config_tcache check inside
tcache_get() and simplify its callers.

Make arena_malloc() an inline function, since it is part of the malloc()
fast path.

Remove conditional logic that cause build issues if --disable-tcache was
specified.
2012-02-13 12:29:49 -08:00