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server-skynet-source-3rd-je.../include/jemalloc/internal/mutex.h

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Refactor jemalloc.c into multiple source files. Fix a stats bug in large object curruns accounting. Replace tcache_bin_fill() with arena_tcache_fill(), and fix a bug in an OOM error path. Fix API name mangling to coexist with __attribute__((malloc)).
2010-01-17 01:53:50 +08:00
/******************************************************************************/
#ifdef JEMALLOC_H_TYPES
Use OSSpinLock*() for locking on OS X. pthread_mutex_lock() can call malloc() on OS X (!!!), which causes deadlock. Work around this by using spinlocks that are built of more primitive stuff.
2011-03-19 10:30:18 +08:00
#ifdef JEMALLOC_OSSPIN
typedef OSSpinLock malloc_mutex_t;
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.
2012-02-11 12:22:09 +08:00
#define MALLOC_MUTEX_INITIALIZER 0
Use OSSpinLock*() for locking on OS X. pthread_mutex_lock() can call malloc() on OS X (!!!), which causes deadlock. Work around this by using spinlocks that are built of more primitive stuff.
2011-03-19 10:30:18 +08:00
#else
Refactor jemalloc.c into multiple source files. Fix a stats bug in large object curruns accounting. Replace tcache_bin_fill() with arena_tcache_fill(), and fix a bug in an OOM error path. Fix API name mangling to coexist with __attribute__((malloc)).
2010-01-17 01:53:50 +08:00
typedef pthread_mutex_t malloc_mutex_t;
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.
2012-02-03 14:04:57 +08:00
# if (defined(PTHREAD_MUTEX_ADAPTIVE_NP) && \
defined(PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP))
# define MALLOC_MUTEX_TYPE PTHREAD_MUTEX_ADAPTIVE_NP
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.
2012-02-11 12:22:09 +08:00
# define MALLOC_MUTEX_INITIALIZER PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
# else
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.
2012-02-03 14:04:57 +08:00
# define MALLOC_MUTEX_TYPE PTHREAD_MUTEX_DEFAULT
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.
2012-02-11 12:22:09 +08:00
# define MALLOC_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
# endif
Port to Mac OS X. Add Mac OS X support, based in large part on the OS X support in Mozilla's version of jemalloc.
2010-09-06 01:35:13 +08:00
#endif
Refactor jemalloc.c into multiple source files. Fix a stats bug in large object curruns accounting. Replace tcache_bin_fill() with arena_tcache_fill(), and fix a bug in an OOM error path. Fix API name mangling to coexist with __attribute__((malloc)).
2010-01-17 01:53:50 +08:00
#endif /* JEMALLOC_H_TYPES */
/******************************************************************************/
#ifdef JEMALLOC_H_STRUCTS
#endif /* JEMALLOC_H_STRUCTS */
/******************************************************************************/
#ifdef JEMALLOC_H_EXTERNS
#ifdef JEMALLOC_LAZY_LOCK
extern bool isthreaded;
#else
# define isthreaded true
#endif
bool malloc_mutex_init(malloc_mutex_t *mutex);
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.
2012-03-14 07:31:41 +08:00
void malloc_mutex_prefork(malloc_mutex_t *mutex);
void malloc_mutex_postfork_parent(malloc_mutex_t *mutex);
void malloc_mutex_postfork_child(malloc_mutex_t *mutex);
Refactor jemalloc.c into multiple source files. Fix a stats bug in large object curruns accounting. Replace tcache_bin_fill() with arena_tcache_fill(), and fix a bug in an OOM error path. Fix API name mangling to coexist with __attribute__((malloc)).
2010-01-17 01:53:50 +08:00
#endif /* JEMALLOC_H_EXTERNS */
/******************************************************************************/
#ifdef JEMALLOC_H_INLINES
#ifndef JEMALLOC_ENABLE_INLINE
void malloc_mutex_lock(malloc_mutex_t *mutex);
Modify dirty page purging algorithm. Convert chunks_dirty from a red-black tree to a doubly linked list, and use it to purge dirty pages from chunks in FIFO order. Add a lock around the code that purges dirty pages via madvise(2), in order to avoid kernel contention. If lock acquisition fails, indefinitely postpone purging dirty pages. Add a lower limit of one chunk worth of dirty pages per arena for purging, in addition to the active:dirty ratio. When purging, purge all dirty pages from at least one chunk, but rather than purging enough pages to drop to half the purging threshold, merely drop to the threshold.
2010-03-05 13:35:07 +08:00
bool malloc_mutex_trylock(malloc_mutex_t *mutex);
Refactor jemalloc.c into multiple source files. Fix a stats bug in large object curruns accounting. Replace tcache_bin_fill() with arena_tcache_fill(), and fix a bug in an OOM error path. Fix API name mangling to coexist with __attribute__((malloc)).
2010-01-17 01:53:50 +08:00
void malloc_mutex_unlock(malloc_mutex_t *mutex);
#endif
#if (defined(JEMALLOC_ENABLE_INLINE) || defined(JEMALLOC_MUTEX_C_))
JEMALLOC_INLINE void
malloc_mutex_lock(malloc_mutex_t *mutex)
{
Use OSSpinLock*() for locking on OS X. pthread_mutex_lock() can call malloc() on OS X (!!!), which causes deadlock. Work around this by using spinlocks that are built of more primitive stuff.
2011-03-19 10:30:18 +08:00
if (isthreaded) {
#ifdef JEMALLOC_OSSPIN
OSSpinLockLock(mutex);
#else
Refactor jemalloc.c into multiple source files. Fix a stats bug in large object curruns accounting. Replace tcache_bin_fill() with arena_tcache_fill(), and fix a bug in an OOM error path. Fix API name mangling to coexist with __attribute__((malloc)).
2010-01-17 01:53:50 +08:00
pthread_mutex_lock(mutex);
Use OSSpinLock*() for locking on OS X. pthread_mutex_lock() can call malloc() on OS X (!!!), which causes deadlock. Work around this by using spinlocks that are built of more primitive stuff.
2011-03-19 10:30:18 +08:00
#endif
}
Refactor jemalloc.c into multiple source files. Fix a stats bug in large object curruns accounting. Replace tcache_bin_fill() with arena_tcache_fill(), and fix a bug in an OOM error path. Fix API name mangling to coexist with __attribute__((malloc)).
2010-01-17 01:53:50 +08:00
}
Modify dirty page purging algorithm. Convert chunks_dirty from a red-black tree to a doubly linked list, and use it to purge dirty pages from chunks in FIFO order. Add a lock around the code that purges dirty pages via madvise(2), in order to avoid kernel contention. If lock acquisition fails, indefinitely postpone purging dirty pages. Add a lower limit of one chunk worth of dirty pages per arena for purging, in addition to the active:dirty ratio. When purging, purge all dirty pages from at least one chunk, but rather than purging enough pages to drop to half the purging threshold, merely drop to the threshold.
2010-03-05 13:35:07 +08:00
JEMALLOC_INLINE bool
malloc_mutex_trylock(malloc_mutex_t *mutex)
{
Use OSSpinLock*() for locking on OS X. pthread_mutex_lock() can call malloc() on OS X (!!!), which causes deadlock. Work around this by using spinlocks that are built of more primitive stuff.
2011-03-19 10:30:18 +08:00
if (isthreaded) {
#ifdef JEMALLOC_OSSPIN
return (OSSpinLockTry(mutex) == false);
#else
Modify dirty page purging algorithm. Convert chunks_dirty from a red-black tree to a doubly linked list, and use it to purge dirty pages from chunks in FIFO order. Add a lock around the code that purges dirty pages via madvise(2), in order to avoid kernel contention. If lock acquisition fails, indefinitely postpone purging dirty pages. Add a lower limit of one chunk worth of dirty pages per arena for purging, in addition to the active:dirty ratio. When purging, purge all dirty pages from at least one chunk, but rather than purging enough pages to drop to half the purging threshold, merely drop to the threshold.
2010-03-05 13:35:07 +08:00
return (pthread_mutex_trylock(mutex) != 0);
Use OSSpinLock*() for locking on OS X. pthread_mutex_lock() can call malloc() on OS X (!!!), which causes deadlock. Work around this by using spinlocks that are built of more primitive stuff.
2011-03-19 10:30:18 +08:00
#endif
} else
Modify dirty page purging algorithm. Convert chunks_dirty from a red-black tree to a doubly linked list, and use it to purge dirty pages from chunks in FIFO order. Add a lock around the code that purges dirty pages via madvise(2), in order to avoid kernel contention. If lock acquisition fails, indefinitely postpone purging dirty pages. Add a lower limit of one chunk worth of dirty pages per arena for purging, in addition to the active:dirty ratio. When purging, purge all dirty pages from at least one chunk, but rather than purging enough pages to drop to half the purging threshold, merely drop to the threshold.
2010-03-05 13:35:07 +08:00
return (false);
}
Refactor jemalloc.c into multiple source files. Fix a stats bug in large object curruns accounting. Replace tcache_bin_fill() with arena_tcache_fill(), and fix a bug in an OOM error path. Fix API name mangling to coexist with __attribute__((malloc)).
2010-01-17 01:53:50 +08:00
JEMALLOC_INLINE void
malloc_mutex_unlock(malloc_mutex_t *mutex)
{
Use OSSpinLock*() for locking on OS X. pthread_mutex_lock() can call malloc() on OS X (!!!), which causes deadlock. Work around this by using spinlocks that are built of more primitive stuff.
2011-03-19 10:30:18 +08:00
if (isthreaded) {
#ifdef JEMALLOC_OSSPIN
OSSpinLockUnlock(mutex);
#else
Refactor jemalloc.c into multiple source files. Fix a stats bug in large object curruns accounting. Replace tcache_bin_fill() with arena_tcache_fill(), and fix a bug in an OOM error path. Fix API name mangling to coexist with __attribute__((malloc)).
2010-01-17 01:53:50 +08:00
pthread_mutex_unlock(mutex);
Use OSSpinLock*() for locking on OS X. pthread_mutex_lock() can call malloc() on OS X (!!!), which causes deadlock. Work around this by using spinlocks that are built of more primitive stuff.
2011-03-19 10:30:18 +08:00
#endif
}
Refactor jemalloc.c into multiple source files. Fix a stats bug in large object curruns accounting. Replace tcache_bin_fill() with arena_tcache_fill(), and fix a bug in an OOM error path. Fix API name mangling to coexist with __attribute__((malloc)).
2010-01-17 01:53:50 +08:00
}
#endif
#endif /* JEMALLOC_H_INLINES */
/******************************************************************************/
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