| /* Copyright (C) 1991-2018 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 <stddef.h> |
| #include <sys/vtimes.h> |
| #include <sys/resource.h> |
| |
| /* Return the number of 1/VTIMES_UNITS_PER_SECOND-second |
| units in the `struct timeval' TV. */ |
| #define TIMEVAL_TO_VTIMES(tv) \ |
| ((tv.tv_sec * VTIMES_UNITS_PER_SECOND) + \ |
| (tv.tv_usec * VTIMES_UNITS_PER_SECOND / 1000000)) |
| |
| /* If VT is not NULL, write statistics for WHO into *VT. |
| Return 0 for success, -1 for failure. */ |
| static int |
| vtimes_one (struct vtimes *vt, enum __rusage_who who) |
| { |
| if (vt != NULL) |
| { |
| struct rusage usage; |
| |
| if (__getrusage (who, &usage) < 0) |
| return -1; |
| |
| vt->vm_utime = TIMEVAL_TO_VTIMES (usage.ru_utime); |
| vt->vm_stime = TIMEVAL_TO_VTIMES (usage.ru_stime); |
| vt->vm_idsrss = usage.ru_idrss + usage.ru_isrss; |
| vt->vm_majflt = usage.ru_majflt; |
| vt->vm_minflt = usage.ru_minflt; |
| vt->vm_nswap = usage.ru_nswap; |
| vt->vm_inblk = usage.ru_inblock; |
| vt->vm_oublk = usage.ru_oublock; |
| } |
| return 0; |
| } |
| |
| /* If CURRENT is not NULL, write statistics for the current process into |
| *CURRENT. If CHILD is not NULL, write statistics for all terminated child |
| processes into *CHILD. Returns 0 for success, -1 for failure. */ |
| int |
| vtimes (struct vtimes *current, struct vtimes *child) |
| { |
| if (vtimes_one (current, RUSAGE_SELF) < 0 |
| || vtimes_one (child, RUSAGE_CHILDREN) < 0) |
| return -1; |
| return 0; |
| } |