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PTHREAD_MUTEX_CONSISTENT(3)ux Programmer's ManualEAD_MUTEX_CONSISTENT(3)
pthread_mutex_consistent - make a robust mutex consistent
#include <pthread.h>
int pthread_mutex_consistent(pthread_mutex_t *mutex);
Compile and link with -pthread.
Feature Test Macro Requirements for glibc (see
feature_test_macros(7)):
pthread_mutex_consistent():
_POSIX_C_SOURCE >= 200809L
This function makes a robust mutex consistent if it is in an
inconsistent state. A mutex can be left in an inconsistent state
if its owner terminates while holding the mutex, in which case
the next owner who acquires the mutex will succeed and be
notified by a return value of EOWNERDEAD from a call to
pthread_mutex_lock().
On success, pthread_mutex_consistent() returns 0. Otherwise, it
returns a positive error number to indicate the error.
EINVAL The mutex is either not robust or is not in an
inconsistent state.
pthread_mutex_consistent() was added to glibc in version 2.12.
POSIX.1-2008.
pthread_mutex_consistent() simply informs the implementation that
the state (shared data) guarded by the mutex has been restored to
a consistent state and that normal operations can now be
performed with the mutex. It is the application's responsibility
to ensure that the shared data has been restored to a consistent
state before calling pthread_mutex_consistent().
Before the addition of pthread_mutex_consistent() to POSIX, glibc
defined the following equivalent nonstandard function if
_GNU_SOURCE was defined:
int pthread_mutex_consistent_np(const pthread_mutex_t *mutex);
This GNU-specific API, which first appeared in glibc 2.4, is
nowadays obsolete and should not be used in new programs; since
glibc 2.34 it has been marked as deprecated.
See pthread_mutexattr_setrobust(3).
pthread_mutex_lock(3), pthread_mutexattr_getrobust(3),
pthread_mutexattr_init(3), pthread_mutexattr_setrobust(3),
pthreads(7)
This page is part of release 5.13 of the Linux man-pages project.
A description of the project, information about reporting bugs,
and the latest version of this page, can be found at
https://www.kernel.org/doc/man-pages/.
Linux 2021-08-27 PTHREAD_MUTEX_CONSISTENT(3)
Pages that refer to this page: pthread_mutexattr_setrobust(3)
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