From 4abab5ad6c8465a7528ccdd5f49367da05f78bbd Mon Sep 17 00:00:00 2001 From: Vladimir Azarov Date: Tue, 1 Oct 2024 15:47:05 +0200 Subject: Initial version --- src/thread/pthread_mutex_consistent.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 src/thread/pthread_mutex_consistent.c (limited to 'src/thread/pthread_mutex_consistent.c') 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; +} -- cgit v1.2.3