Commit Graph

469 Commits

Author SHA1 Message Date
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
3add8d8cda Remove unused variables in tcache_dalloc_large().
Submitted by Mike Hommey.
2012-02-28 21:08:19 -08:00
Jason Evans
c90ad71237 Remove the sysv option. 2012-02-28 20:31:37 -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
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
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
Jason Evans
4162627757 Remove the swap feature.
Remove the swap feature, which enabled per application swap files.  In
practice this feature has not proven itself useful to users.
2012-02-13 10:56:17 -08:00
Jason Evans
fd56043c53 Remove magic.
Remove structure magic, because 1) it is no longer conditional, and 2)
it stopped being very effective at detecting memory corruption several
years ago.
2012-02-13 10:24:43 -08:00
Jason Evans
7372b15a31 Reduce cpp conditional logic complexity.
Convert configuration-related cpp conditional logic to use static
constant variables, e.g.:

  #ifdef JEMALLOC_DEBUG
    [...]
  #endif

becomes:

  if (config_debug) {
    [...]
  }

The advantage is clearer, more concise code.  The main disadvantage is
that data structures no longer have conditionally defined fields, so
they pay the cost of all fields regardless of whether they are used.  In
practice, this is only a minor concern; config_stats will go away in an
upcoming change, and config_prof is the only other major feature that
depends on more than a few special-purpose fields.
2012-02-10 20:22:09 -08:00
Jason Evans
12a4887826 Fix huge_ralloc to maintain chunk statistics.
Fix huge_ralloc() to properly maintain chunk statistics when using
mremap(2).
2011-11-11 14:41:59 -08:00
Jason Evans
da9dde0854 Clean up rb documentation. 2011-11-01 20:48:31 -07:00
Jason Evans
a507004d29 Fix off-by-one backtracing issues.
Rewrite prof_alloc_prep() as a cpp macro, PROF_ALLOC_PREP(), in order to
remove any doubt as to whether an additional stack frame is created.
Prior to this change, it was assumed that inlining would reduce the
total number of frames in the backtrace, but in practice behavior wasn't
completely predictable.

Create imemalign() and call it from posix_memalign(), memalign(), and
valloc(), so that all entry points require the same number of stack
frames to be ignored during backtracing.
2011-08-12 13:48:27 -07:00
Jason Evans
04ca1efe35 Adjust relative #include for private_namespace.h. 2011-07-30 17:58:07 -07:00
Jason Evans
746e77a06b Add the --with-private-namespace option.
Add the --with-private-namespace option to make it possible to work
around library-private symbols being exposed in static libraries.
2011-07-30 16:40:52 -07:00
Jason Evans
f0b22cf932 Use LLU suffix for all 64-bit constants.
Add the LLU suffix for all 0x... 64-bit constants.

Reported by Jakob Blomer.
2011-05-22 10:49:44 -07:00
Jason Evans
7427525c28 Move repo contents in jemalloc/ to top level. 2011-03-31 20:36:17 -07:00