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Command: pthread_mutexattr | Section: 3 | Source: OpenBSD | File: pthread_mutexattr.3
PTHREAD_MUTEXATTR_INIT(3) FreeBSD Library Functions Manual
NAME
pthread_mutexattr_init, pthread_mutexattr_destroy,
pthread_mutexattr_setprioceiling, pthread_mutexattr_getprioceiling,
pthread_mutexattr_setprotocol, pthread_mutexattr_getprotocol,
pthread_mutexattr_settype, pthread_mutexattr_gettype - mutex attribute
operations
SYNOPSIS
#include <pthread.h>
int
pthread_mutexattr_init(pthread_mutexattr_t *attr);
int
pthread_mutexattr_destroy(pthread_mutexattr_t *attr);
int
pthread_mutexattr_setprioceiling(pthread_mutexattr_t *attr,
int prioceiling);
int
pthread_mutexattr_getprioceiling(pthread_mutexattr_t *attr,
int *prioceiling);
int
pthread_mutexattr_setprotocol(pthread_mutexattr_t *attr, int protocol);
int
pthread_mutexattr_getprotocol(pthread_mutexattr_t *attr, int *protocol);
int
pthread_mutexattr_settype(pthread_mutexattr_t *attr, int type);
int
pthread_mutexattr_gettype(pthread_mutexattr_t *attr, int *type);
DESCRIPTION
Mutex attributes are used to specify parameters to pthread_mutex_init().
One attribute object can be used in multiple calls to
pthread_mutex_init(), with or without modifications between calls.
The pthread_mutexattr_init() function initializes attr with all the
default mutex attributes.
The pthread_mutexattr_destroy() function destroys attr.
The pthread_mutexattr_set*() functions set the attribute that corresponds
to each function name.
The pthread_mutexattr_get*() functions copy the value of the attribute
that corresponds to each function name to the location pointed to by the
second function parameter.
RETURN VALUES
If successful, these functions return 0. Otherwise, an error number is
returned to indicate the error.
ERRORS
pthread_mutexattr_init() will fail if:
[ENOMEM] Out of memory.
pthread_mutexattr_destroy() will fail if:
[EINVAL] Invalid value for attr.
pthread_mutexattr_setprioceiling() will fail if:
[EINVAL] Invalid value for attr, or invalid value for
prioceiling.
pthread_mutexattr_getprioceiling() will fail if:
[EINVAL] Invalid value for attr.
pthread_mutexattr_setprotocol() will fail if:
[EINVAL] Invalid value for attr, or invalid value for protocol.
pthread_mutexattr_getprotocol() will fail if:
[EINVAL] Invalid value for attr.
pthread_mutexattr_settype() will fail if:
[EINVAL] Invalid value for attr, or invalid value for type.
pthread_mutexattr_gettype() will fail if:
[EINVAL] Invalid value for attr.
SEE ALSO
pthread_mutex_init(3)
STANDARDS
pthread_mutexattr_init() and pthread_mutexattr_destroy() conform to
ISO/IEC 9945-1:1996 ("POSIX.1")
pthread_mutexattr_setprioceiling(), pthread_mutexattr_getprioceiling(),
pthread_mutexattr_setprotocol(), pthread_mutexattr_getprotocol(),
pthread_mutexattr_settype(), and pthread_mutexattr_gettype() conform to
Version 2 of the Single UNIX Specification ("SUSv2")
FreeBSD 14.1-RELEASE-p8 November 10, 2015 FreeBSD 14.1-RELEASE-p8