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Diffstat (limited to 'resource/vtimes.c')
-rw-r--r-- | resource/vtimes.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/resource/vtimes.c b/resource/vtimes.c new file mode 100644 index 0000000..37dc01b --- /dev/null +++ b/resource/vtimes.c @@ -0,0 +1,65 @@ +/* Copyright (C) 1991, 1997, 1998 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#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; +} |