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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | STANDARDS | HISTORY | NOTES | EXAMPLES | SEE ALSO | COLOPHON |
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pthread_...nsistent(3) Library Functions Manual pthread_...nsistent(3)
pthread_mutex_consistent - make a robust mutex consistent
POSIX threads library (libpthread, -lpthread)
#include <pthread.h>
int pthread_mutex_consistent(pthread_mutex_t *mutex);
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.
POSIX.1-2008.
glibc 2.12. POSIX.1-2008.
Before the addition of pthread_mutex_consistent() to POSIX, glibc
defined the following equivalent nonstandard function if
_GNU_SOURCE was defined:
[[deprecated]]
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.
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().
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 the man-pages (Linux kernel and C library
user-space interface documentation) project. Information about
the project can be found at
⟨https://www.kernel.org/doc/man-pages/⟩. If you have a bug report
for this manual page, see
⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
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2024-06-26. If you discover any rendering problems in this HTML
version of the page, or you believe there is a better or more up-
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man-pages@man7.org
Linux man-pages 6.9.1 2024-05-02 pthread_...nsistent(3)
Pages that refer to this page: pthread_mutexattr_setrobust(3)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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