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- /* Get a clockid_t for the process CPU clock of a given process. Generic.
- Copyright (C) 2000-2019 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; if not, see
- <http://www.gnu.org/licenses/>. */
- #include <errno.h>
- #include <time.h>
- #include <unistd.h>
- int
- __clock_getcpuclockid (pid_t pid, clockid_t *clock_id)
- {
- /* We don't allow any process ID but our own. */
- if (pid != 0 && pid != getpid ())
- return EPERM;
- #ifdef CLOCK_PROCESS_CPUTIME_ID
- /* Store the number. */
- *clock_id = CLOCK_PROCESS_CPUTIME_ID;
- return 0;
- #else
- /* We don't have a timer for that. */
- return ENOENT;
- #endif
- }
- weak_alias (__clock_getcpuclockid, clock_getcpuclockid)
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