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| author | Vladimir Azarov <avm@intermediate-node.net> | 2024-10-01 15:47:05 +0200 |
|---|---|---|
| committer | Vladimir Azarov <avm@intermediate-node.net> | 2024-10-01 15:47:05 +0200 |
| commit | 4abab5ad6c8465a7528ccdd5f49367da05f78bbd (patch) | |
| tree | ebf009bf1376a5a223a915bc27cbbd791a1316bc /src/thread/pthread_mutex_consistent.c | |
Initial version
Diffstat (limited to 'src/thread/pthread_mutex_consistent.c')
| -rw-r--r-- | src/thread/pthread_mutex_consistent.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/thread/pthread_mutex_consistent.c b/src/thread/pthread_mutex_consistent.c new file mode 100644 index 0000000..27c74e5 --- /dev/null +++ b/src/thread/pthread_mutex_consistent.c @@ -0,0 +1,14 @@ +#include "pthread_impl.h" +#include "atomic.h" + +int pthread_mutex_consistent(pthread_mutex_t *m) +{ + 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; + a_and(&m->_m_lock, ~0x40000000); + return 0; +} |