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On 03.05.2013 18:11, Kai Tietz wrote:
> Well int clock_getcpuclockid we miss. I think it is obvious that we
> would like to provide it, so a patch to clock.c file would be desired
> here. The patch for an implementation for this function takes for
> sure less time as it took you to collect all those information. So
> why you weren't providing one in you mail?
>
>
> int clock_getcpuclockid(pid_t pid, clockid_t *clock_id)
> {
> /* TODO: we might want to check pid to verify process. */
> (void) pid;
> *clock_id = CLOCK_PROCESS_CPUTIME_ID;
> return 0;
> }
>
> and as we are about it the
This is wrong.
Correct stub is:
int
clock_getcpuclockid (pid_t pid, clockid_t *clock_id)
{
if (0 == pid)
{
/* Calling with 0 pid is the same as using
* CLOCK_PROCESS_CPUTIME_ID.
*/
*clock_id = CLOCK_PROCESS_CPUTIME_ID;
return 0;
}
/* Special clock values for getting time of other
* processes are not supported yet.
*/
errno = ENOSYS;
return ENOSYS;
}
Whether it could be correctly implemented or not - i can't tell. Maybe
if you restrict the CLOCK_* constants to a particular range, and then
use "special" pid+CLOCK_PROCESS_MAX_ID constants...that might just work
(as long as pid is less than (MAX_PID_T - CLOCK_PROCESS_MAX_ID)).
- --
O< ascii ribbon - stop html email! - www.asciiribbon.org
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