Commit Graph

1451 Commits

Author SHA1 Message Date
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
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
fc1bb70e5f Merge branch '2_2_5_bp' 2011-11-14 17:15:59 -08:00
Jason Evans
196c7b7e6d Update ChangeLog for 2.2.5. 2011-11-14 17:14:43 -08:00
Jason Evans
f1cc61b93a Fix malloc_stats_print(..., "a") output.
Fix the logic in stats_print() such that if the "a" flag is passed in
without the "m" flag, merged statistics will be printed even if only one
arena is initialized.
2011-11-14 17:14:13 -08:00
Jason Evans
115704dcdb Fix huge_ralloc to maintain chunk statistics.
Fix huge_ralloc() to properly maintain chunk statistics when using
mremap(2).
2011-11-14 17:13:49 -08:00
Jason Evans
03bf7a7a26 Fix huge_ralloc() race when using mremap(2).
Fix huge_ralloc() to remove the old memory region from tree of huge
allocations *before* calling mremap(2), in order to make sure that no
other thread acquires the old memory region via mmap() and encounters
stale metadata in the tree.

Reported by: Rich Prohaska
2011-11-14 17:13:33 -08:00
Jason Evans
b3bd885090 Update ChangeLog for 2.2.5. 2011-11-14 17:12:45 -08:00
Jason Evans
334cc02142 Fix malloc_stats_print(..., "a") output.
Fix the logic in stats_print() such that if the "a" flag is passed in
without the "m" flag, merged statistics will be printed even if only one
arena is initialized.
2011-11-11 14:46:04 -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
fa351d9fdc Fix huge_ralloc() race when using mremap(2).
Fix huge_ralloc() to remove the old memory region from tree of huge
allocations *before* calling mremap(2), in order to make sure that no
other thread acquires the old memory region via mmap() and encounters
stale metadata in the tree.

Reported by: Rich Prohaska
2011-11-09 11:55:19 -08:00
Jason Evans
d1c526d53b Merge branch '2_2_4_bp' 2011-11-05 21:50:15 -07:00
Jason Evans
45e040a82c Update ChangeLog for 2.2.4. 2011-11-05 21:48:43 -07:00
Jason Evans
dd2cb6484b Fix rallocm() test to support >4KiB pages. 2011-11-05 21:48:27 -07:00
Jason Evans
c87f10a325 Initialize arenas_tsd before setting it.
Reported by: Ethan Burns, Rich Prohaska, Tudor Bosman
2011-11-05 21:48:06 -07:00
Jason Evans
ca9ee1a409 Update ChangeLog for 2.2.4. 2011-11-05 21:46:23 -07:00
Jason Evans
30fbef8aea Fix rallocm() test to support >4KiB pages. 2011-11-05 21:06:55 -07:00
Jason Evans
8e6f8b490d Initialize arenas_tsd before setting it.
Reported by: Ethan Burns, Rich Prohaska, Tudor Bosman
2011-11-03 18:40:03 -07:00
Jason Evans
f576c63f1e Refactor SO and REV make variables.
Refactor the SO and REV such that they are set via autoconf variables,
@so@ and @rev@.  These variables are both needed by the jemalloc.sh
script, so this unifies their definitions.
2011-11-01 22:27:41 -07:00
Antony Dovgal
2bd3cbc5c6 add autogenerated jemalloc.sh wrapper script 2011-11-01 22:09:46 -07:00
Jason Evans
da9dde0854 Clean up rb documentation. 2011-11-01 20:48:31 -07:00
Jason Evans
5bdbae57ee Merge branch 'dev' 2011-08-31 16:18:38 -07:00
Jason Evans
c67e4fdc71 Update ChangeLog for 2.2.3. 2011-08-31 15:19:13 -07:00
Jason Evans
a9076c9483 Fix a prof-related race condition.
Fix prof_lookup() to artificially raise curobjs for all paths through
the code that creates a new entry in the per thread bt2cnt hash table.
This fixes a race condition that could corrupt memory if prof_accum were
false, and a non-default lg_prof_tcmax were used and/or threads were
destroyed.
2011-08-30 23:40:11 -07:00
Jason Evans
46405e670f Fix a prof-related bug in realloc().
Fix realloc() such that it only records the object passed in as freed if
no OOM error occurs.
2011-08-30 23:37:29 -07:00
Jason Evans
749c2a0ab6 Add missing prof_malloc() call in allocm().
Add a missing prof_malloc() call in allocm().  Before this fix, negative
object/byte counts could be observed in heap profiles for applications
that use allocm().
2011-08-12 18:37:54 -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
745e30b157 Document swap.fds mallctl as read-write.
Fix the manual page to document the swap.fds mallctl as read-write,
rather than read-only.
2011-08-12 11:40:55 -07:00
Jason Evans
b493ce22a4 Conditionalize an isalloc() call in rallocm().
Conditionalize an isalloc() call in rallocm() that be unnecessary.
2011-08-12 11:28:47 -07:00
Jason Evans
183ba50c19 Fix two prof-related bugs in rallocm().
Properly handle boundary conditions for sampled region promotion in
rallocm().  Prior to this fix, some combinations of 'size' and 'extra'
values could cause erroneous behavior.  Additionally, size class
recording for promoted regions was incorrect.
2011-08-11 23:00:25 -07:00
Jason Evans
0cdd42eb32 Clean up prof-related comments.
Clean up some prof-related comments to more accurately reflect how the
code works.

Simplify OOM handling code in a couple of prof-related error paths.
2011-08-09 19:06:06 -07:00
Jason Evans
41b954ed36 Use prof_tdata_cleanup() argument.
Use the argument to prof_tdata_cleanup(), rather than calling
PROF_TCACHE_GET().  This fixes a bug in the NO_TLS case.
2011-08-08 17:10:07 -07:00
Jason Evans
04ca1efe35 Adjust relative #include for private_namespace.h. 2011-07-30 17:58:07 -07:00
Jason Evans
446c3b22f1 Merge branch 'dev' 2011-07-30 17:27:02 -07:00
Jason Evans
4c48481e7c Update ChangeLog for 2.2.2. 2011-07-30 16:59:13 -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
f9a8edbb50 Fix assertions in arena_purge().
Fix assertions in arena_purge() to accurately reflect the constraints in
arena_maybe_purge().  There were two bugs here, one of which merely
weakened the assertion, and the other of which referred to an
uninitialized variable (typo; used npurgatory instead of
arena->npurgatory).
2011-06-12 17:13:39 -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