EN JA
PTHREAD_MUTEX_LOCK(3)
PTHREAD_MUTEX_LOCK(3) FreeBSD Library Functions Manual PTHREAD_MUTEX_LOCK(3)

NAME

pthread_mutex_locklock a mutex

LIBRARY

POSIX Threads Library (libpthread, -lpthread)

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.

STANDARDS

The pthread_mutex_lock() function conforms to ISO/IEC 9945-1:1996 (“POSIX.1”).
January 31, 2006 FreeBSD