| /* Get a clockid_t for the process CPU clock of a given process. Generic. |
| Copyright (C) 2000-2016 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) |