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Diffstat (limited to 'nptl/pthread_clock_gettime.c')
-rw-r--r-- | nptl/pthread_clock_gettime.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/nptl/pthread_clock_gettime.c b/nptl/pthread_clock_gettime.c new file mode 100644 index 0000000000..0e6f67bc96 --- /dev/null +++ b/nptl/pthread_clock_gettime.c @@ -0,0 +1,46 @@ +/* Copyright (C) 2001, 2002 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <stdlib.h> +#include <time.h> +#include <libc-internal.h> +#include "pthreadP.h" + + +#if HP_TIMING_AVAIL +int +__pthread_clock_gettime (hp_timing_t freq, struct timespec *tp) +{ + hp_timing_t tsc; + + /* Get the current counter. */ + HP_TIMING_NOW (tsc); + + /* Compute the offset since the start time of the process. */ + tsc -= THREAD_GETMEM (THREAD_SELF, cpuclock_offset); + + /* Compute the seconds. */ + tp->tv_sec = tsc / freq; + + /* And the nanoseconds. This computation should be stable until + we get machines with about 16GHz frequency. */ + tp->tv_nsec = ((tsc % freq) * 1000000000ull) / freq; + + return 0; +} +#endif |