Originální popis anglicky:
pthread_condattr_getclock, pthread_condattr_setclock - get and set the clock
selection condition variable attribute (
ADVANCED REALTIME)
Návod, kniha: POSIX Programmer's Manual
#include <pthread.h>
int pthread_condattr_getclock(const pthread_condattr_t *restrict
attr,
clockid_t *restrict
clock_id );
int pthread_condattr_setclock(pthread_condattr_t *
attr,
clockid_t
clock_id );
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.
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.
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 by clock_id does not refer to a
known clock, or is a CPU-time clock.
These functions shall not return an error code of [EINTR].
The following sections are informative.
None.
None.
None.
None.
pthread_cond_destroy() ,
pthread_cond_timedwait() ,
pthread_condattr_destroy() ,
pthread_condattr_getpshared() ,1
pthread_condattr_init() ,
pthread_condattr_setpshared() ,1
pthread_create() ,
pthread_mutex_init() , the Base Definitions
volume of IEEE Std 1003.1-2001,
<pthread.h>
Portions of this text are reprinted and reproduced in electronic form from IEEE
Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable
Operating System Interface (POSIX), The Open Group Base Specifications Issue
6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. In the event of any discrepancy between
this version and the original IEEE and The Open Group Standard, the original
IEEE and The Open Group Standard is the referee document. The original
Standard can be obtained online at http://www.opengroup.org/unix/online.html
.
