Name
pthread_mutex_consistent — make a robust mutex consistent
Synopsis
#include <pthread.h>
int
pthread_mutex_consistent( |
pthread_mutex_t *mutex); |
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DESCRIPTION
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().
RETURN VALUE
On success, pthread_mutex_consistent() returns 0.
Otherwise, it returns a positive error number to indicate the
error.
NOTES
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 ALSO
pthread_mutex_lock(3), pthread_mutexattr_getrobust(3), pthread_mutexattr_init(3), pthread_mutexattr_setrobust(3), pthreads(7)
COLOPHON
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/.
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Copyright (c) 2017, Yubin Ruan <ablacktshirtgmail.com> and Copyright (c) 2017, Michael Kerrisk <mtk.manpagesgmail.com> %%%LICENSE_START(VERBATIM) Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Since the Linux kernel and libraries are constantly changing, this manual page may be incorrect or out-of-date. The author(s) assume no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein. The author(s) may not have taken the same level of care in the production of this manual, which is licensed free of charge, as they might when working professionally. Formatted or processed versions of this manual, if unaccompanied by the source, must acknowledge the copyright and authors of this work. %%%LICENSE_END |