NAME
pthread_mutex_unlock
- unlock a mutex
LIBRARY
POSIX Thread Library (libpthread, -lpthread)
SYNOPSIS
int
pthread_mutex_unlock(
pthread_mutex_t *mutex
)
DESCRIPTION
If the current thread holds the lock on
mutex
,
then the
pthread_mutex_unlock(
)
function unlocks
mutex
.
RETURN VALUES
If successful,
pthread_mutex_unlock(
)
will return zero, otherwise an error number will be returned to
indicate the error.
ERRORS
pthread_mutex_unlock(
)
may fail if:
- [
EINVAL
] -
The value specified by
mutex
is invalid.
- [
EPERM
] -
The current thread does not hold a lock on
mutex
.
SEE ALSO
pthread_mutex_destroy(3),
pthread_mutex_init(3),
pthread_mutex_lock(3),
pthread_mutex_trylock(3)
STANDARDS
pthread_mutex_unlock(
)
conforms to
ISO/IEC 9945-1:1996 (``POSIX.1'') .