diff options
| author | Rich Felker <dalias@aerifal.cx> | 2011-09-22 21:08:55 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2011-09-22 21:08:55 -0400 |
| commit | 4b153ac42428447a148e6da543ebe6df017078db (patch) | |
| tree | d9a5b8035f98b8cec47fc6044e38305ea5cdb91a /src/thread/pthread_cond_signal.c | |
| parent | 2eff02e4a032323a45541c79967638d8c77d79e4 (diff) | |
| download | musl-4b153ac42428447a148e6da543ebe6df017078db.tar.gz musl-4b153ac42428447a148e6da543ebe6df017078db.tar.xz musl-4b153ac42428447a148e6da543ebe6df017078db.zip | |
fix deadlock in condition wait whenever there are multiple waiters
it's amazing none of the conformance tests i've run even bothered to check whether something so basic works...
Diffstat (limited to 'src/thread/pthread_cond_signal.c')
| -rw-r--r-- | src/thread/pthread_cond_signal.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/thread/pthread_cond_signal.c b/src/thread/pthread_cond_signal.c index a0211287..e8ed71cc 100644 --- a/src/thread/pthread_cond_signal.c +++ b/src/thread/pthread_cond_signal.c @@ -2,7 +2,8 @@ int pthread_cond_signal(pthread_cond_t *c) { - if (a_swap(&c->_c_block, 0)); + int w = c->_c_waiters; + if (a_swap(&c->_c_block, 0) || w) __wake(&c->_c_block, 1, 0); return 0; } |