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Command: pthread_mutex_init | Section: 3 | Source: OpenBSD | File: pthread_mutex_init.3
PTHREAD_MUTEX_INIT(3) FreeBSD Library Functions Manual PTHREAD_MUTEX_INIT(3)
NAME
pthread_mutex_init - create a mutex
SYNOPSIS
#include <pthread.h>
int
pthread_mutex_init(pthread_mutex_t *mutex,
const pthread_mutexattr_t *attr);
DESCRIPTION
The pthread_mutex_init() function creates a new mutex, with attributes
specified with attr. If attr is NULL the default attributes are used,
otherwise attr should be initialized by calling
pthread_mutexattr_init(3).
A mutex may also be initialized by assignment with the macro
PTHREAD_MUTEX_INITIALIZER.
RETURN VALUES
If successful, pthread_mutex_init() will return zero and put the new
mutex ID into mutex, otherwise an error number will be returned to
indicate the error.
ERRORS
pthread_mutex_init() will fail if:
[EINVAL] The value specified by attr is invalid.
[ENOMEM] The process cannot allocate enough memory to create
another mutex.
SEE ALSO
pthread_mutex_destroy(3), pthread_mutex_lock(3), pthread_mutex_unlock(3),
pthread_mutexattr_init(3)
STANDARDS
pthread_mutex_init() conforms to ISO/IEC 9945-1:1996 ("POSIX.1").
FreeBSD 14.1-RELEASE-p8 January 3, 2014 FreeBSD 14.1-RELEASE-p8