diff options
Diffstat (limited to 'mdk-stage1/dietlibc/libpthread/pthread_mutex_unlock.c')
-rw-r--r-- | mdk-stage1/dietlibc/libpthread/pthread_mutex_unlock.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/mdk-stage1/dietlibc/libpthread/pthread_mutex_unlock.c b/mdk-stage1/dietlibc/libpthread/pthread_mutex_unlock.c new file mode 100644 index 000000000..0b5a1d0f7 --- /dev/null +++ b/mdk-stage1/dietlibc/libpthread/pthread_mutex_unlock.c @@ -0,0 +1,34 @@ +#include <unistd.h> +#include <sched.h> +#include <errno.h> + +#include <pthread.h> +#include "thread_internal.h" + +/* will never return EINVAL ! */ + +int pthread_mutex_unlock(pthread_mutex_t *mutex) +{ + _pthread_descr this; + + __THREAD_INIT(); + + this = __thread_self(); + + if (this==mutex->owner) { + if (mutex->kind==PTHREAD_MUTEX_RECURSIVE_NP) { + if (--(mutex->count)) + return 0; + } + + mutex->owner=0; + __pthread_unlock(&(mutex->lock)); + } + else if (mutex->kind==PTHREAD_MUTEX_ERRORCHECK_NP) + { + (*(__errno_location()))=EPERM; + return -1; + } + + return 0; +} |