NAME
pthread_mutex_lock – lock a mutex
SYNOPSIS
#include <pthread.h>
int
pthread_mutex_lock(pthread_mutex_t *mutex);
DESCRIPTION
The pthread_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.
SEE ALSO
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”).