Commit Graph

13 Commits

Author SHA1 Message Date
Jason Evans
1b5830178f Fix malloc_mutex_[un]lock() to conditionally check witness.
Also remove tautological cassert(config_debug) calls.
2016-04-17 13:44:59 -07:00
Jason Evans
b2c0d6322d Add witness, a simple online locking validator.
This resolves #358.
2016-04-14 02:09:28 -07:00
Matthijs
a1aaf949a5 Optimizations for Windows
- Set opt_lg_chunk based on run-time OS setting
- Verify LG_PAGE is compatible with run-time OS setting
- When targeting Windows Vista or newer, use SRWLOCK instead of CRITICAL_SECTION
- When targeting Windows Vista or newer, statically initialize init_lock
2015-06-25 22:53:58 +02:00
Eric Wong
4dcf04bfc0 correctly detect adaptive mutexes in pthreads
PTHREAD_MUTEX_ADAPTIVE_NP is an enum on glibc and not a macro,
we must test for their existence by attempting compilation.
2014-09-29 16:10:40 -07:00
Mike Hommey
a19e87fbad Add support for Mingw 2012-04-21 21:27:46 -07:00
Jason Evans
bedceea2a8 Fix isthreaded-related build breakage. 2012-04-20 14:12:30 -07:00
Jason Evans
633aaff967 Postpone mutex initialization on FreeBSD.
Postpone mutex initialization on FreeBSD until after base allocation is
safe.
2012-04-03 19:25:30 -07:00
Jason Evans
1e6138c88c Remove malloc_mutex_trylock().
Remove malloc_mutex_trylock(); it has not been used for quite some time.
2012-03-24 19:36:27 -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
6da5418ded Remove ephemeral mutexes.
Remove ephemeral mutexes from the prof machinery, and remove
malloc_mutex_destroy().  This simplifies mutex management on systems
that call malloc()/free() inside pthread_mutex_{create,destroy}().

Add atomic_*_u() for operation on unsigned values.

Fix prof_printf() to call malloc_vsnprintf() rather than
malloc_snprintf().
2012-03-23 18:05:51 -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
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
7427525c28 Move repo contents in jemalloc/ to top level. 2011-03-31 20:36:17 -07:00