/* Copyright (C) 1991-2014 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 (current, child) struct vtimes *current; struct vtimes *child; { if (vtimes_one (current, RUSAGE_SELF) < 0 || vtimes_one (child, RUSAGE_CHILDREN) < 0) return -1; return 0; }