Name
NAME
pthread_condattr_getclock, pthread_condattr_setclock — get and set the clock selection condition variable attribute (ADVANCED REALTIME)
SYNOPSIS
THR CS #include <pthread.h> int pthread_condattr_getclock(const pthread_condattr_t *restrictattr
, clockid_t *restrictclock_id
); int pthread_condattr_setclock(pthread_condattr_t *attr
, clockid_tclock_id
);
DESCRIPTION
The pthread_condattr_getclock() function shall obtain the value of the clock attribute from the attributes object referenced by attr. The pthread_condattr_setclock() function shall set the clock attribute in an initialized attributes object referenced by attr. If pthread_condattr_setclock() is called with a clock_id argument that refers to a CPU-time clock, the call shall fail.
The clock attribute is the clock ID of the clock that shall be used to measure the timeout service of pthread_cond_timedwait(). The default value of the clock attribute shall refer to the system clock.
RETURN VALUE
If successful, the pthread_condattr_getclock() function shall return zero and store the value of the clock attribute of attr into the object referenced by the clock_id argument. Otherwise, an error number shall be returned to indicate the error.
If successful, the pthread_condattr_setclock() function shall return zero; otherwise, an error number shall be returned to indicate the error.
ERRORS
These functions may fail if:
[EINVAL] | The value specified by attr is invalid. |
The pthread_condattr_setclock() function may fail if:
[EINVAL] | The value specified ... |
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