Commit Graph

295 Commits

Author SHA1 Message Date
Richard Diamond
994fad9bda Add check for madvise(2) to configure.ac.
Some platforms, such as Google's Portable Native Client, use Newlib and
thus lack access to madvise(2).  In those instances, pages_purge() is
transformed into a no-op.
2014-06-03 09:32:49 -07:00
Richard Diamond
9c3a10fdf6 Try to use __builtin_ffsl if ffsl is unavailable.
Some platforms (like those using Newlib) don't have ffs/ffsl.  This
commit adds a check to configure.ac for __builtin_ffsl if ffsl isn't
found.  __builtin_ffsl performs the same function as ffsl, and has the
added benefit of being available on any platform utilizing
Gcc-compatible compiler.

This change does not address the used of ffs in the MALLOCX_ARENA()
macro.
2014-06-02 07:44:50 -07:00
Mike Hommey
6f6704c35b Make in-tree MSVC builds work 2014-06-01 21:39:49 -07:00
Mike Hommey
8c6157558a Add -FS flag to support parallel builds with MSVC 2013 2014-06-01 21:38:05 -07:00
Mike Hommey
ff2e999667 Don't use msvc_compat's C99 headers with MSVC versions that have (some) C99 support 2014-06-01 20:53:35 -07:00
Jason Evans
d04047cc29 Add size class computation capability.
Add size class computation capability, currently used only as validation
of the size class lookup tables.  Generalize the size class spacing used
for bins, for eventual use throughout the full range of allocation
sizes.
2014-05-28 21:06:46 -07:00
Daniel Micay
ccf046659a STATIC_PAGE_SHIFT for cross-compiling jemalloc
Sets `STATIC_PAGE_SHIFT` for cross-compiling jemalloc to 12. A
shift of 12 represents a page size of 4k for practically all
platforms.
2014-05-28 10:24:35 -07:00
Mike Hommey
affe009e37 Use a configure test to detect the form of malloc_usable_size in malloc.h 2014-05-27 16:13:21 -07:00
Jason Evans
e2deab7a75 Refactor huge allocation to be managed by arenas.
Refactor huge allocation to be managed by arenas (though the global
red-black tree of huge allocations remains for lookup during
deallocation).  This is the logical conclusion of recent changes that 1)
made per arena dss precedence apply to huge allocation, and 2) made it
possible to replace the per arena chunk allocation/deallocation
functions.

Remove the top level huge stats, and replace them with per arena huge
stats.

Normalize function names and types to *dalloc* (some were *dealloc*).

Remove the --enable-mremap option.  As jemalloc currently operates, this
is a performace regression for some applications, but planned work to
logarithmically space huge size classes should provide similar amortized
performance.  The motivation for this change was that mremap-based huge
reallocation forced leaky abstractions that prevented refactoring.
2014-05-15 22:36:41 -07:00
Jason Evans
05125b8377 Update libunwind configuration check to look for unw_backtrace().
Update libunwind configuration check to look for unw_backtrace(), which
is a newer API not available in older versions of libunwind.
2014-04-22 20:48:07 -07:00
Jason Evans
4d434adb14 Make dss non-optional, and fix an "arena.<i>.dss" mallctl bug.
Make dss non-optional on all platforms which support sbrk(2).

Fix the "arena.<i>.dss" mallctl to return an error if "primary" or
"secondary" precedence is specified, but sbrk(2) is not supported.
2014-04-15 12:09:48 -07:00
Jason Evans
644d414bc9 Reverse the cc-silence default.
Replace --enable-cc-silence with --disable-cc-silence, so that by
default people won't see spurious warnings when building jemalloc.
2014-04-14 22:49:23 -07:00
Jason Evans
9790b9667f Remove the *allocm() API, which is superceded by the *allocx() API. 2014-04-14 22:32:31 -07:00
Jason Evans
82abf6fe69 Allow libgcc-based backtracing on x86.
Remove autoconf code that explicitly disabled libgcc-based backtracing
on i[3456]86.  There is no mention of which platforms/compilers
exhibited problems when this code was added, and chances are good that
any gcc toolchain issues have long since been fixed.
2014-03-30 20:35:50 -07:00
Jason Evans
e181f5aa76 Keep frame pointers if using gcc frame intrinsics.
Specify -fno-omit-frame-pointer when using __builtin_frame_address() and
__builtin_return_address() for backtracing.  This fixes backtracing
failures on e.g. i686 for optimized builds.
2014-03-30 18:58:32 -07:00
Jason Evans
df3f27024f Adapt hash tests to big-endian systems.
The hash code, which has MurmurHash3 at its core, generates different
output depending on system endianness, so adapt the expected output on
big-endian systems.  MurmurHash3 code also makes the assumption that
unaligned access is okay (not true on all systems), but jemalloc only
hashes data structures that have sufficient alignment to dodge this
limitation.
2014-03-30 16:27:08 -07:00
Jason Evans
cb657e3170 Add configure test to verify SSE2 code compiles.
Make sure that emmintrin.h can be #include'd without causing a
compilation error, rather than blindly defining HAVE_SSE2 based on
architecture.  Attempts to force SSE2 compilation on a 32-bit Ubuntu
13.10 system running as a VMware guest resulted in a no-win choice
without any obvious explanation besides toolchain misconfiguration/bug:
- Suffer compilation failure due to __MMX__, __SSE__, and __SSE2__ not
  being defined, even if -mmmx, -msse, and -msse2 are manually
  specified (note that they appear to be enabled by default).
- Manually define __MMX__, __SSE__, and __SSE2__, and suffer compiler
  warnings that they are already automatically defined.  This results in
  successful compilation and execution, but the noise is intolerable.
2014-02-25 11:21:41 -08:00
Jason Evans
99b0fbbe69 Add workaround for missing 'restrict' keyword.
Add a cpp #define that removes 'restrict' keyword usage unless the
compiler definitely supports C99.  As written, 'restrict' is only
enabled if the compiler supports the -std=gnu99 option (e.g. gcc and
llvm).

Reported by Tobias Hieta.
2014-02-24 16:08:38 -08:00
George Kola
ddd6bd4e99 Using MADV_FREE on Solaris/Illumos 2014-02-12 23:06:21 +00:00
Jason Evans
f234dc51b9 Fix name mangling for stress tests.
Fix stress tests such that testlib code uses the jet_ allocator, but
test code uses libjemalloc.

Generate jemalloc_{rename,mangle}.h, the former because it's needed for
the stress test name mangling fix, and the latter for consistency.  As
an artifact of this change, some (but not all) definitions related to
the experimental API are absent from the headers unless the feature is
enabled at configure time.
2014-01-16 17:38:01 -08:00
Jason Evans
d82a5e6a34 Implement the *allocx() API.
Implement the *allocx() API, which is a successor to the *allocm() API.
The *allocx() functions are slightly simpler to use because they have
fewer parameters, they directly return the results of primary interest,
and mallocx()/rallocx() avoid the strict aliasing pitfall that
allocm()/rallocx() share with posix_memalign().  The following code
violates strict aliasing rules:

    foo_t *foo;
    allocm((void **)&foo, NULL, 42, 0);

whereas the following is safe:

    foo_t *foo;
    void *p;
    allocm(&p, NULL, 42, 0);
    foo = (foo_t *)p;

mallocx() does not have this problem:

    foo_t *foo = (foo_t *)mallocx(42, 0);
2013-12-12 22:35:52 -08:00
Jason Evans
80061b6df0 Integrate SFMT 1.3.3 into test infrastructure.
Integrate the SIMD-oriented Fast Mersenne Twister (SFMT) 1.3.3 into the
test infrastructure.

The sfmt_t state encapsulation modification comes from Crux
(http://www.canonware.com/Crux/) and enables multiple
concurrent PRNGs.

test/unit/SFMT.c is an adaptation of SFMT's test.c that performs all the
same validation, both for 32- and 64-bit generation.
2013-12-09 13:21:08 -08:00
Jason Evans
a4f124f59f Normalize #define whitespace.
Consistently use a tab rather than a space following #define.
2013-12-08 22:28:27 -08:00
Jason Evans
748dfac778 Add test code coverage analysis.
Add test code coverage analysis based on gcov.
2013-12-06 18:50:51 -08:00
Jason Evans
d37d5adee4 Disable floating point code/linking when possible.
Unless heap profiling is enabled, disable floating point code and don't
link with libm.  This, in combination with e.g. EXTRA_CFLAGS=-mno-sse on
x64 systems, makes it possible to completely disable floating point
register use.  Some versions of glibc neglect to save/restore
caller-saved floating point registers during dynamic lazy symbol
loading, and the symbol loading code uses whatever malloc the
application happens to have linked/loaded with, the result being
potential floating point register corruption.
2013-12-05 23:01:50 -08:00
Jason Evans
dc1bed6227 Fix more test refactoring issues. 2013-12-05 21:44:25 -08:00
Jason Evans
86abd0dcd8 Refactor to support more varied testing.
Refactor the test harness to support three types of tests:
- unit: White box unit tests.  These tests have full access to all
  internal jemalloc library symbols.  Though in actuality all symbols
  are prefixed by jet_, macro-based name mangling abstracts this away
  from test code.
- integration: Black box integration tests.  These tests link with
  the installable shared jemalloc library, and with the exception of
  some utility code and configure-generated macro definitions, they have
  no access to jemalloc internals.
- stress: Black box stress tests.  These tests link with the installable
  shared jemalloc library, as well as with an internal allocator with
  symbols prefixed by jet_ (same as for unit tests) that can be used to
  allocate data structures that are internal to the test code.

Move existing tests into test/{unit,integration}/ as appropriate.

Split out internal parts of jemalloc_defs.h.in and put them in
jemalloc_internal_defs.h.in.  This reduces internals exposure to
applications that #include <jemalloc/jemalloc.h>.

Refactor jemalloc.h header generation so that a single header file
results, and the prototypes can be used to generate jet_ prototypes for
tests.  Split jemalloc.h.in into multiple parts (jemalloc_defs.h.in,
jemalloc_macros.h.in, jemalloc_protos.h.in, jemalloc_mangle.h.in) and
use a shell script to generate a unified jemalloc.h at configure time.

Change the default private namespace prefix from "" to "je_".

Add missing private namespace mangling.

Remove hard-coded private_namespace.h.  Instead generate it and
private_unnamespace.h from private_symbols.txt.  Use similar logic for
public symbols, which aids in name mangling for jet_ symbols.

Add test_warn() and test_fail().  Replace existing exit(1) calls with
test_fail() calls.
2013-12-03 22:06:59 -08:00
Jason Evans
6668853596 Avoid deprecated sbrk(2) on OS X.
Avoid referencing sbrk(2) on OS X, because it is deprecated as of OS X
10.9 (Mavericks), and the compiler warns against using it.
2013-12-03 21:49:36 -08:00
Jason Evans
80ddf498eb Fix build break for MSVC.
Introduce AROUT to control whether there is space between ARFLAGS and
$@.  This regression was introduced by
ad505e0ec6.

Reported by Mike Hommey.
2013-08-20 11:48:19 +01:00
Jory A. Pratt
ad505e0ec6 Allow toolchain to determine ar 2013-08-19 17:57:59 +01:00
Jason Evans
2625c8968e Fix quoting bug in --without-export implementation. 2013-01-22 16:46:27 -08:00
Jason Evans
7329a4f038 Fix AC_PATH_PROG() calls to specify default.
Fix AC_PATH_PROG() calls to specify 'false' as the default, so that if
the configure script fails to find a program, the false program is
instead called, and an error occurs.  Prior to this fix, if xsltproc
could not be found, make would not report an error due to the leading -o
in the xsltproc invocation.

Reported by David Reiss.
2013-01-22 10:53:29 -08:00
Garrett Cooper
13e4e24c42 Fix build break on *BSD
Linux uses alloca.h; many other operating systems define alloca(3) in
stdlib.h.

Signed-off-by: Garrett Cooper <yanegomi@gmail.com>
2012-12-24 10:32:16 -08:00
Garrett Cooper
72c1e59fd2 Improve configure tests for ffsl
In particular:
- ffsl always returns int, not long, on FreeBSD, Linux, and OSX.
- Mute compiler warnings about rv being unused (and the potential for
   compilers optimizing out the call completely) by dumping the value
   with printf(3).

Signed-off-by: Garrett Cooper <yanegomi@gmail.com>
2012-12-24 10:32:14 -08:00
Mike Hommey
5135e34062 Allow to enable ivsalloc independently 2012-12-23 11:47:10 -08:00
Mike Hommey
d0357f7a09 Allow to disable the zone allocator on Darwin 2012-12-23 11:08:39 -08:00
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
247d124847 Drop const from malloc_usable_size() argument on Linux.
Drop const from malloc_usable_size() argument on Linux, in order to
match the prototype in Linux's malloc.h.
2012-10-09 16:20:10 -07:00
Mike Hommey
a6770a7049 Remove -fno-common compiler flag for OS X.
It doesn't allow the je_malloc_message and je_malloc_conf symbols to be
overridden when linking statically.
2012-05-09 16:16:48 -07:00
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
Mike Hommey
79c4bca7d1 Use "hardcoded" dependencies when compiler doesn't support -MM 2012-05-02 16:31:17 -07:00
Mike Hommey
7bfecf412d Check for VALGRIND_RESIZEINPLACE_BLOCK support
VALGRIND_RESIZEINPLACE_BLOCK was added in valgrind 3.7. Unfortunately, the
__VALGRIND_MINOR__ macro still says 6 in 3.7 :(
2012-05-02 03:24:21 -07:00
Mike Hommey
fd97b1dfc7 Add support for MSVC
Tested with MSVC 8 32 and 64 bits.
2012-05-01 11:32:11 -07:00
Mike Hommey
7cdea3973c Few configure.ac adjustments
- Use the extensions autoconf finds for object and executable files.
- Remove the sorev variable, and replace SOREV definition with sorev's.
- Default to je_ prefix on win32.
2012-04-30 17:13:45 -07:00
Jason Evans
6716aa8352 Force use of TLS if heap profiling is enabled. 2012-04-23 13:04:55 -07:00
Jason Evans
a4936ce4d6 Fix jemalloc.sh code generation.
Fix jemalloc.sh code generation by adding @sorev@ and using it instead
of @SOREV@ (which contains Makefile-specific variables).
2012-04-23 12:46:46 -07:00
Mike Hommey
14103d3598 Fix intmax_t configure error message 2012-04-21 21:30:00 -07:00
Mike Hommey
a19e87fbad Add support for Mingw 2012-04-21 21:27:46 -07:00
Mike Hommey
188da7c3f5 Refactor object and library build, and only build PIC libraries when PIC_CFLAGS is defined 2012-04-18 11:56:50 -07:00
Mike Hommey
85221d5d75 Make versioned shared library suffix configurable
This allows for different patterns for file names:
- lib.so.version for e.g. Linux
- lib.version.dylib for OSX (which is much more common than
lib.dylib.version)
- lib.dll for Windows (no version at all).
2012-04-18 11:53:16 -07:00
Jason Evans
b57d3ec571 Add atomic(9) implementations of atomic operations.
Add atomic(9) implementations of atomic operations.  These are used on
FreeBSD for non-x86 architectures.
2012-04-17 13:27:39 -07:00
Mike Hommey
fa08da752b Limit the number of flags directly given to the linker, and refactor rpath
This will make things easier for MSVC support.
2012-04-16 22:52:50 -07:00
Mike Hommey
5bee66d3ed Add variables for library prefix, and static library, object and executable suffixes
This makes hacking on Makefile easier.
2012-04-16 22:47:02 -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
a398a6b46e Remove configure test cruft. 2012-04-16 12:41:19 -07:00
Jason Evans
7ca0fdfb85 Disable munmap() if it causes VM map holes.
Add a configure test to determine whether common mmap()/munmap()
patterns cause VM map holes, and only use munmap() to discard unused
chunks if the problem does not exist.

Unify the chunk caching for mmap and dss.

Fix options processing to limit lg_chunk to be large enough that
redzones will always fit.
2012-04-12 20:20:58 -07:00
Mike Hommey
83c324acd8 Use a stub replacement and disable dss when sbrk is not supported 2012-04-12 08:43:08 -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
02b231205e Fix threaded initialization and enable it on Linux.
Reported by Mike Hommey.
2012-04-05 11:06:23 -07:00
Jason Evans
382132eeac Add missing include for ffsl() test. 2012-04-04 15:25:43 -07:00
Jason Evans
3cc1f1aa69 Add tls_model configuration.
The tls_model attribute isn't supporte by clang (yet?), so add a
configure test that defines JEMALLOC_TLS_MODEL appropriately.
2012-04-03 22:30:05 -07:00
Mike Hommey
2cfe6d67ef Change AC_COMPILE_IFELSE into AC_LINK_IFELSE for the __sync_{add, sub}_and_fetch() test
With the Android NDK, __sync_{add,sub}_and_fetch() compile fine for uint64_t,
but the corresponding libgcc function aren't there.
2012-03-30 10:25:59 -07:00
Jason Evans
fd4fcefa00 Force the lazy-lock feature on FreeBSD.
Force the lazy-lock feature on FreeBSD in order to avoid pthread_self(),
because it causes allocation.  (This change was mistakenly omitted from
41b6afb834b1f5250223678c52bd4f013d4234f6.)
2012-03-23 17:40:58 -07:00
Mike Hommey
c1e567bda0 Use __sync_add_and_fetch and __sync_sub_and_fetch when they are available
These functions may be available as inlines or as libgcc functions. In the
former case, a __GCC_HAVE_SYNC_COMPARE_AND_SWAP_n macro is defined. But we
still want to use these functions in the latter case, when we don't have
our own implementation.
2012-03-26 11:51:13 -07:00
Jason Evans
41b6afb834 Port to FreeBSD.
Use FreeBSD-specific functions (_pthread_mutex_init_calloc_cb(),
_malloc_{pre,post}fork()) to avoid bootstrapping issues due to
allocation in libc and libthr.

Add malloc_strtoumax() and use it instead of strtoul().  Disable
validation code in malloc_vsnprintf() and malloc_strtoumax() until
jemalloc is initialized.  This is necessary because locale
initialization causes allocation for both vsnprintf() and strtoumax().

Force the lazy-lock feature on in order to avoid pthread_self(),
because it causes allocation.

Use syscall(SYS_write, ...) rather than write(...), because libthr wraps
write() and causes allocation.  Without this workaround, it would not be
possible to print error messages in malloc_conf_init() without
substantially reworking bootstrapping.

Fix choose_arena_hard() to look at how many threads are assigned to the
candidate choice, rather than checking whether the arena is
uninitialized.  This bug potentially caused more arenas to be
initialized than necessary.
2012-02-02 23:09:53 -08:00
Jason Evans
b80581d309 Forcibly disable TLS on OS X.
Forcibly disable TLS on OS X.  gcc and llvm-gcc on OS X do not support
TLS, but clang does.  Unfortunately, the implementation calls malloc()
internally during TLS initialization, which causes an unresolvable
bootstrapping issue.
2012-03-23 16:17:43 -07:00
Jason Evans
9022bf9bfd Remove -no-cpp-precomp compiler flag for OS X.
Remove the -no-cpp-precomp compiler flag when compiling on OS X.  clang
does not support the flag, and gcc works fine without it.
2012-03-23 16:14:08 -07:00
Jason Evans
cd9a1346e9 Implement tsd.
Implement tsd, which is a TLS/TSD abstraction that uses one or both
internally.  Modify bootstrapping such that no tsd's are utilized until
allocation is safe.

Remove malloc_[v]tprintf(), and use malloc_snprintf() instead.

Fix %p argument size handling in malloc_vsnprintf().

Fix a long-standing statistics-related bug in the "thread.arena"
mallctl that could cause crashes due to linked list corruption.
2012-03-23 15:14:55 -07:00
Mike Hommey
154829d256 Improve zone support for OSX
I tested a build from 10.7 run on 10.7 and 10.6, and a build from 10.6
run on 10.6.  The AC_COMPILE_IFELSE limbo is to avoid running a program
during configure, which presumably makes it work when cross compiling
for iOS.
2012-03-20 11:52:50 -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
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
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
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
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
6684cacfa8 Tweak configure.ac to support cross-compiling.
Submitted by Andreas Vinsander.
2012-03-05 12:15:36 -08:00
Jason Evans
7e77eaffff Add the --disable-experimental option. 2012-03-02 17:47:37 -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
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
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
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
955851f384 Adjust repo path dependencies.
Update .gitignore and configure.ac to deal with the recent directory
restructuring.
2011-03-31 22:38:51 -07:00
Jason Evans
7427525c28 Move repo contents in jemalloc/ to top level. 2011-03-31 20:36:17 -07:00