NAME
pthread_mutex_lock —
lock a mutex
LIBRARY
library “libpthread”
SYNOPSIS
#include
<pthread.h>
int
pthread_mutex_lock(pthread_mutex_t
*mutex);
DESCRIPTION
Thepthread_mutex_lock()
function locks mutex. If the mutex is already locked,
the calling thread will block until the mutex becomes available.
RETURN VALUES
If successful, pthread_mutex_lock() will
return zero, otherwise an error number will be returned to indicate the
error.
ERRORS
The pthread_mutex_lock() function will
fail if:
- [
EINVAL] - The value specified by mutex is invalid.
- [
EDEADLK] - A deadlock would occur if the thread blocked waiting for mutex.
- [
EOWNERDEAD] - The argument mutex points to a robust mutex and the previous owning thread terminated while holding the mutex lock. The lock was granted to the caller and it is up to the new owner to make the state consistent.
- [
ENOTRECOVERABLE] - The state protected by the mutex is not recoverable.
SEE ALSO
pthread_mutex_consistent(3), pthread_mutex_destroy(3), pthread_mutex_init(3), pthread_mutex_trylock(3), pthread_mutex_unlock(3)
STANDARDS
The pthread_mutex_lock() function conforms
to ISO/IEC 9945-1:1996
(“POSIX.1”).