Commit Graph

18 Commits

Author SHA1 Message Date
Mike Hommey
9906660eb7 Allow to build without exporting symbols
When statically linking jemalloc, it may be beneficial not to export its
symbols if it makes sense, which allows the compiler and the linker to do
some further optimizations.
2012-11-25 10:23:40 -08:00
Jason Evans
2e671ffbad Add the --enable-mremap option.
Add the --enable-mremap option, and disable the use of mremap(2) by
default, for the same reason that freeing chunks via munmap(2) is
disabled by default on Linux: semi-permanent VM map fragmentation.
2012-05-09 16:12:00 -07:00
Jason Evans
079687bb87 Clean up documentation and formatting. 2012-04-23 12:49:23 -07:00
Jason Evans
59ae2766af Add the --disable-munmap option.
Add the --disable-munmap option, remove the configure test that
attempted to detect the VM allocation quirk known to exist on Linux
x86[_64], and make --disable-munmap implicit on Linux.
2012-04-16 18:08:58 -07:00
Jason Evans
122449b073 Implement Valgrind support, redzones, and quarantine.
Implement Valgrind support, as well as the redzone and quarantine
features, which help Valgrind detect memory errors.  Redzones are only
implemented for small objects because the changes necessary to support
redzones around large and huge objects are complicated by in-place
reallocation, to the point that it isn't clear that the maintenance
burden is worth the incremental improvement to Valgrind support.

Merge arena_salloc() and arena_salloc_demote().

Refactor i[v]salloc() to expose the 'demote' option.
2012-04-11 11:46:18 -07:00
Jason Evans
b147611b52 Add utrace(2)-based tracing (--enable-utrace). 2012-04-05 13:36:17 -07:00
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
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
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
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
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
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
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
7427525c28 Move repo contents in jemalloc/ to top level. 2011-03-31 20:36:17 -07:00