This graph shows which files directly or indirectly include this file:

Functions
long long	_linux_get_real_cycles (void)

long long	_linux_get_virt_usec_pttimer (void)

long long	_linux_get_virt_usec_gettime (void)

long long	_linux_get_virt_usec_times (void)

long long	_linux_get_virt_usec_rusages (void)

long long	_linux_get_real_usec_gettime (void)

long long	_linux_get_real_usec_gettimeofday (void)

long long	_linux_get_real_usec_cycles (void)

long long	_linux_get_real_nsec_gettime (void)

long long	_linux_get_virt_nsec_gettime (void)

int	mmtimer_setup (void)

int	init_proc_thread_timer (hwd_context_t *thr_ctx)

Function Documentation

◆ _linux_get_real_cycles()

long long _linux_get_real_cycles ( void )

Definition at line 312 of file linux-timer.c.

{
    long long retval;
#if defined(HAVE_GETTIMEOFDAY)||defined(__arm__)||defined(__mips__)
 
    /* Crude estimate, not accurate in prescence of DVFS */
 
    retval = _papi_os_vector.get_real_usec(  ) *
        ( long long ) _papi_hwi_system_info.hw_info.cpu_max_mhz;
#else
    retval = get_cycles(  );
#endif
    return retval;
}

◆ _linux_get_real_nsec_gettime()

long long _linux_get_real_nsec_gettime ( void )

Definition at line 533 of file linux-timer.c.

{
 
   long long retval;
 
   struct timespec foo;
#ifdef HAVE_CLOCK_GETTIME_REALTIME_HR
   syscall( __NR_clock_gettime, CLOCK_REALTIME_HR, &foo );
#else
   syscall( __NR_clock_gettime, CLOCK_REALTIME, &foo );
#endif
   retval = ( long long ) foo.tv_sec * ( long long ) 1000000000;
   retval += ( long long ) ( foo.tv_nsec );
 
   return retval;
}

◆ _linux_get_real_usec_cycles()

long long _linux_get_real_usec_cycles ( void )

Definition at line 377 of file linux-timer.c.

{
 
   long long retval;
 
   /* Not accurate in the prescence of DVFS */
 
   retval = get_cycles(  ) /
            ( long long ) _papi_hwi_system_info.hw_info.cpu_max_mhz;
 
   return retval;
}

◆ _linux_get_real_usec_gettime()

long long _linux_get_real_usec_gettime ( void )

Definition at line 340 of file linux-timer.c.

{
 
   long long retval;
 
   struct timespec foo;
#ifdef HAVE_CLOCK_GETTIME_REALTIME_HR
   syscall( __NR_clock_gettime, CLOCK_REALTIME_HR, &foo );
#else
   syscall( __NR_clock_gettime, CLOCK_REALTIME, &foo );
#endif
   retval = ( long long ) foo.tv_sec * ( long long ) 1000000;
   retval += ( long long ) ( foo.tv_nsec / 1000 );
 
   return retval;
}

◆ _linux_get_real_usec_gettimeofday()

long long _linux_get_real_usec_gettimeofday ( void )

Definition at line 362 of file linux-timer.c.

{
 
   long long retval;
 
   struct timeval buffer;
   gettimeofday( &buffer, NULL );
   retval = ( long long ) buffer.tv_sec * ( long long ) 1000000;
   retval += ( long long ) ( buffer.tv_usec );
 
   return retval;
}

◆ _linux_get_virt_nsec_gettime()

long long _linux_get_virt_nsec_gettime ( void )

Definition at line 556 of file linux-timer.c.

{
 
    long long retval;
 
    struct timespec foo;
 
    syscall( __NR_clock_gettime, CLOCK_THREAD_CPUTIME_ID, &foo );
    retval = ( long long ) foo.tv_sec * ( long long ) 1000000000;
    retval += ( long long ) foo.tv_nsec ;
 
    return retval;
}

◆ _linux_get_virt_usec_gettime()

long long _linux_get_virt_usec_gettime ( void )

Definition at line 443 of file linux-timer.c.

{
 
    long long retval;
 
    struct timespec foo;
 
    syscall( __NR_clock_gettime, CLOCK_THREAD_CPUTIME_ID, &foo );
    retval = ( long long ) foo.tv_sec * ( long long ) 1000000;
    retval += ( long long ) foo.tv_nsec / 1000;
 
    return retval;
}

◆ _linux_get_virt_usec_pttimer()

long long _linux_get_virt_usec_pttimer ( void )

Definition at line 462 of file linux-timer.c.

{
 
   long long retval;
   char buf[LINE_MAX];
   long long utime, stime;
   int rv, cnt = 0, i = 0;
   int stat_fd;
 
 
again:
   sprintf( buf, "/proc/%d/task/%d/stat", getpid(  ), mygettid(  ) );
   stat_fd = open( buf, O_RDONLY );
   if ( stat_fd == -1 ) {
      PAPIERROR( "open(%s)", buf );
      return PAPI_ESYS;
   }
 
   rv = read( stat_fd, buf, LINE_MAX * sizeof ( char ) );
   if ( rv == -1 ) {
      if ( errno == EBADF ) {
     close(stat_fd);
     goto again;
      }
      PAPIERROR( "read()" );
      close(stat_fd);
      return PAPI_ESYS;
   }
   lseek( stat_fd, 0, SEEK_SET );
 
   if (rv == LINE_MAX) rv--;
   buf[rv] = '\0';
   SUBDBG( "Thread stat file is:%s\n", buf );
   while ( ( cnt != 13 ) && ( i < rv ) ) {
      if ( buf[i] == ' ' ) {
     cnt++;
      }
      i++;
   }
 
   if ( cnt != 13 ) {
      PAPIERROR( "utime and stime not in thread stat file?" );
      close(stat_fd);
      return PAPI_ESYS;
   }
 
   if ( sscanf( buf + i, "%llu %llu", &utime, &stime ) != 2 ) {
      close(stat_fd);
      PAPIERROR("Unable to scan two items from thread stat file at 13th space?");
      return PAPI_ESYS;
   }
 
   retval = ( utime + stime ) * ( long long ) 1000000 /_papi_os_info.clock_ticks;
 
   close(stat_fd);
 
   return retval;
}

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◆ _linux_get_virt_usec_rusages()

long long _linux_get_virt_usec_rusages ( void )

◆ _linux_get_virt_usec_times()

long long _linux_get_virt_usec_times ( void )

Definition at line 419 of file linux-timer.c.

{
 
   long long retval;
 
   struct tms buffer;
 
   times( &buffer );
 
   SUBDBG( "user %d system %d\n", ( int ) buffer.tms_utime,
                ( int ) buffer.tms_stime );
   retval = ( long long ) ( ( buffer.tms_utime + buffer.tms_stime ) *
                1000000 / sysconf( _SC_CLK_TCK ));
 
   /* NOT CLOCKS_PER_SEC as in the headers! */
 
   return retval;
}

◆ init_proc_thread_timer()

int init_proc_thread_timer ( hwd_context_t * thr_ctx )

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◆ mmtimer_setup()

int mmtimer_setup ( void )

Definition at line 130 of file linux-timer.c.

                        {
 
#if defined(__powerpc__)
multiplier = ((uint64_t)_papi_hwi_system_info.hw_info.cpu_max_mhz * 1000000ULL) / (__ppc_get_timebase_freq()/(uint64_t)1000);
#endif
return PAPI_OK; }