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| author | davidxu <davidxu@FreeBSD.org> | 2006-12-20 04:43:34 +0000 |
|---|---|---|
| committer | davidxu <davidxu@FreeBSD.org> | 2006-12-20 04:43:34 +0000 |
| commit | e034ab54f2626f6cd7ab57942ba3b032684d2ed4 (patch) | |
| tree | dd4940685abc260ad48b4612a46be2cb05f279aa /lib/libthr/thread/thr_init.c | |
| parent | 5a984630fa31489671b035bd30308b299b2e2b50 (diff) | |
| download | FreeBSD-src-e034ab54f2626f6cd7ab57942ba3b032684d2ed4.zip FreeBSD-src-e034ab54f2626f6cd7ab57942ba3b032684d2ed4.tar.gz | |
Check environment variable PTHREAD_ADAPTIVE_SPIN, if it is set, use
it as a default spin cycle count.
Diffstat (limited to 'lib/libthr/thread/thr_init.c')
| -rw-r--r-- | lib/libthr/thread/thr_init.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/libthr/thread/thr_init.c b/lib/libthr/thread/thr_init.c index 981941b..31c361c 100644 --- a/lib/libthr/thread/thr_init.c +++ b/lib/libthr/thread/thr_init.c @@ -66,6 +66,7 @@ pthreadlist _thread_gc_list = TAILQ_HEAD_INITIALIZER(_thread_gc_list); int _thread_active_threads = 1; atfork_head _thr_atfork_list = TAILQ_HEAD_INITIALIZER(_thr_atfork_list); struct umutex _thr_atfork_lock = DEFAULT_UMUTEX; +int _thr_adaptive_spin = 0; struct pthread_prio _thr_priorities[3] = { {RTP_PRIO_MIN, RTP_PRIO_MAX, 0}, /* FIFO */ @@ -423,6 +424,7 @@ init_private(void) { size_t len; int mib[2]; + char *p; _thr_umutex_init(&_mutex_static_lock); _thr_umutex_init(&_cond_static_lock); @@ -454,6 +456,8 @@ init_private(void) _pthread_attr_default.stacksize_attr = _thr_stack_default; TAILQ_INIT(&_thr_atfork_list); + if ((p = getenv("LIBPTHREAD_ADAPTIVE_SPIN")) != NULL) + _thr_adaptive_spin = atoi(p); } init_once = 1; } |
