NAME

pthread_mutex_init —

create a mutex

LIBRARY

POSIX Threads Library (libpthread, -lpthread)

SYNOPSIS

#include <pthread.h>

int
pthread_mutex_init(pthread_mutex_t *restrict mutex, const pthread_mutexattr_t *restrict 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.

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

The pthread_mutex_init() function will fail if:

[EINVAL]: The value specified by attr is invalid.
[ENOMEM]: The process cannot allocate enough memory to create another mutex.

STANDARDS

The pthread_mutex_init() function conforms to ISO/IEC 9945-1:1996 (“POSIX.1”).