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| author | davidxu <davidxu@FreeBSD.org> | 2010-09-01 03:11:21 +0000 |
|---|---|---|
| committer | davidxu <davidxu@FreeBSD.org> | 2010-09-01 03:11:21 +0000 |
| commit | 5f00b957aee7c4cc6138734e4b4dc582cf4d10f9 (patch) | |
| tree | 121f43c8c92789442e82ae22a69ea70be4586b0a /lib/libthr/thread/thr_private.h | |
| parent | 4dcb50723aa0d3f4264ee1d9ca3baf70b4adc2de (diff) | |
| download | FreeBSD-src-5f00b957aee7c4cc6138734e4b4dc582cf4d10f9.zip FreeBSD-src-5f00b957aee7c4cc6138734e4b4dc582cf4d10f9.tar.gz | |
Change atfork lock from mutex to rwlock, also make mutexes used by malloc()
module private type, when private type mutex is locked/unlocked, thread
critical region is entered or leaved. These changes makes fork()
async-signal safe which required by POSIX. Note that user's atfork handler
still needs to be async-signal safe, but it is not problem of libthr, it
is user's responsiblity.
Diffstat (limited to 'lib/libthr/thread/thr_private.h')
| -rw-r--r-- | lib/libthr/thread/thr_private.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/libthr/thread/thr_private.h b/lib/libthr/thread/thr_private.h index 492d58d..a6bc205 100644 --- a/lib/libthr/thread/thr_private.h +++ b/lib/libthr/thread/thr_private.h @@ -132,6 +132,7 @@ struct pthread_mutex { int m_refcount; int m_spinloops; int m_yieldloops; + int m_private; /* * Link for all mutexes a thread currently owns. */ @@ -587,7 +588,7 @@ extern pthreadlist _thread_gc_list __hidden; extern int _thread_active_threads; extern atfork_head _thr_atfork_list __hidden; -extern struct umutex _thr_atfork_lock __hidden; +extern struct urwlock _thr_atfork_lock __hidden; /* Default thread attributes: */ extern struct pthread_attr _pthread_attr_default __hidden; |
