pthread_mutex_consistent - make a robust mutex consistent
int pthread_mutex_consistent(pthread_mutex_t *mutex);
Compile and link with -pthread
Feature Test Macro Requirements for glibc (see feature_test_macros
_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
On success, pthread_mutex_consistent
() returns 0. Otherwise, it returns a
positive error number to indicate the cause of the error.
- The mutex is either not robust or is not in an inconsistent state.
() was added to glibc in version 2.12.
() 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
Before the addition of pthread_mutex_consistent
() to POSIX, glibc defined
the following equivalent nonstandard function if _GNU_SOURCE
int pthread_mutex_consistent(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.