diff options
Diffstat (limited to 'src/thread/pthread_mutex_consistent.c')
| -rw-r--r-- | src/thread/pthread_mutex_consistent.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/src/thread/pthread_mutex_consistent.c b/src/thread/pthread_mutex_consistent.c index 96b83b52..27c74e5b 100644 --- a/src/thread/pthread_mutex_consistent.c +++ b/src/thread/pthread_mutex_consistent.c @@ -1,10 +1,14 @@ #include "pthread_impl.h" +#include "atomic.h" int pthread_mutex_consistent(pthread_mutex_t *m) { - if (!(m->_m_type & 8)) return EINVAL; - if ((m->_m_lock & 0x7fffffff) != __pthread_self()->tid) + int old = m->_m_lock; + int own = old & 0x3fffffff; + if (!(m->_m_type & 4) || !own || !(old & 0x40000000)) + return EINVAL; + if (own != __pthread_self()->tid) return EPERM; - m->_m_type &= ~8U; + a_and(&m->_m_lock, ~0x40000000); return 0; } |