From f066519e91e2290cb79ef12fe7c958ee462cda6c Mon Sep 17 00:00:00 2001 From: davidxu Date: Sat, 2 Apr 2005 01:20:00 +0000 Subject: Import my recent 1:1 threading working. some features improved includes: 1. fast simple type mutex. 2. __thread tls works. 3. asynchronous cancellation works ( using signal ). 4. thread synchronization is fully based on umtx, mainly, condition variable and other synchronization objects were rewritten by using umtx directly. those objects can be shared between processes via shared memory, it has to change ABI which does not happen yet. 5. default stack size is increased to 1M on 32 bits platform, 2M for 64 bits platform. As the result, some mysql super-smack benchmarks show performance is improved massivly. Okayed by: jeff, mtm, rwatson, scottl --- lib/libthr/thread/thr_atfork.c | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-) (limited to 'lib/libthr/thread/thr_atfork.c') diff --git a/lib/libthr/thread/thr_atfork.c b/lib/libthr/thread/thr_atfork.c index 214424a..370623a 100644 --- a/lib/libthr/thread/thr_atfork.c +++ b/lib/libthr/thread/thr_atfork.c @@ -23,16 +23,13 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * + * $FreeBSD$ */ -#include -__FBSDID("$FreeBSD$"); - #include #include #include #include - #include "thr_private.h" __weak_reference(_pthread_atfork, pthread_atfork); @@ -41,20 +38,20 @@ int _pthread_atfork(void (*prepare)(void), void (*parent)(void), void (*child)(void)) { + struct pthread *curthread; struct pthread_atfork *af; - if (_thread_initial == NULL) - _thread_init(); + _thr_check_init(); if ((af = malloc(sizeof(struct pthread_atfork))) == NULL) return (ENOMEM); + curthread = _get_curthread(); af->prepare = prepare; af->parent = parent; af->child = child; - _pthread_mutex_lock(&_atfork_mutex); - TAILQ_INSERT_TAIL(&_atfork_list, af, qe); - _pthread_mutex_unlock(&_atfork_mutex); + THR_UMTX_LOCK(curthread, &_thr_atfork_lock); + TAILQ_INSERT_TAIL(&_thr_atfork_list, af, qe); + THR_UMTX_UNLOCK(curthread, &_thr_atfork_lock); return (0); } - -- cgit v1.1