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-rw-r--r--sysdeps/generic/vtimes.c66
1 files changed, 66 insertions, 0 deletions
diff --git a/sysdeps/generic/vtimes.c b/sysdeps/generic/vtimes.c
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+/* Copyright (C) 1991 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 Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#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
+DEFUN(vtimes_one, (vt, who),
+      struct vtimes *vt AND 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
+DEFUN(vtimes, (current, child),
+      struct vtimes *current AND struct vtimes *child)
+{
+  if (vtimes_one(current, RUSAGE_SELF) < 0 ||
+      vtimes_one(child, RUSAGE_CHILDREN) < 0)
+    return -1;
+  return 0;
+}