Subj : Re: nptl threads execution time
To   : comp.programming.threads
From : loic-dev
Date : Wed Apr 13 2005 03:38 am

Salut Daniel,

> According to available info it seems that it should do what I need...
>
> >This quite new function, standardized by SUSv3,  is available on
FC3.
>
> ...may be its defined but not implemented (glibc-2.3.4-2.fc3,
kernel-2.6.10-hrt)
>
> /usr/include/bits/time.h:#   define CLOCK_THREAD_CPUTIME_ID  3
>
> clock_getrestest.c,83:clock_getres(CLOCK_THREAD_CPUTIME_ID, &ts):
Invalid argument
>

The following program compiles and runs fine on my FC3 !
I have the vanilla glibc shipped with FC3, namely glibc 2.3.4.

Cheers,
Loic.

/*
  res.c
  compile: on FC3 with: gcc -W -Wall res.c -lrt -o res
  execute: bash$ ./res
*/
#include <stdio.h>
#include <time.h>
#include <assert.h>
#include <pthread.h>

int
main()
{
  struct timespec ts;
  assert ( clock_getres(CLOCK_THREAD_CPUTIME_ID, &ts)==0 );
  printf ("resolution = %ld.%09ld s\n", ts.tv_sec, ts.tv_nsec);
  return 0;
}

.