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43 lines
1.4 KiB
C
43 lines
1.4 KiB
C
/* pthread_getcpuclockid -- Get POSIX clockid_t for a pthread_t. Linux version
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Copyright (C) 2000-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, see <https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <pthreadP.h>
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#include <sys/time.h>
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#include <tls.h>
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#include <kernel-posix-cpu-timers.h>
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int
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pthread_getcpuclockid (pthread_t threadid, clockid_t *clockid)
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{
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struct pthread *pd = (struct pthread *) threadid;
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/* Make sure the descriptor is valid. */
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if (INVALID_TD_P (pd))
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/* Not a valid thread handle. */
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return ESRCH;
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/* The clockid_t value is a simple computation from the TID. */
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const clockid_t tidclock = MAKE_THREAD_CPUCLOCK (pd->tid, CPUCLOCK_SCHED);
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*clockid = tidclock;
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return 0;
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}
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