Added a utility for doing timings.

[idzebra-moved-to-github.git] / util / timing.c

diff --git a/util/timing.c b/util/timing.c
new file mode 100644 (file)
index 0000000..9c39c4d
--- /dev/null
+++ b/util/timing.c
@@ -0,0 +1,111 @@
+/* $Id: timing.c,v 1.1 2006-12-11 09:50:36 adam Exp $
+   Copyright (C) 1995-2006
+   Index Data ApS
+
+This file is part of the Zebra server.
+
+Zebra is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+Zebra 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 General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+*/
+
+#include <stdlib.h>
+
+#if HAVE_SYS_TIMES_H
+#include <sys/times.h>
+#endif
+#if HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+
+#include <yaz/xmalloc.h>
+#include <idzebra/util.h>
+
+struct zebra_timing {
+    struct tms tms1, tms2;
+    struct timeval start_time, end_time;
+    double real_sec, user_sec, sys_sec;
+};
+
+zebra_timing_t zebra_timing_create(void)
+{
+    zebra_timing_t t = xmalloc(sizeof(*t));
+    zebra_timing_start(t);
+    return t;
+}
+
+void zebra_timing_start(zebra_timing_t t)
+{
+#if HAVE_SYS_TIMES_H
+#if HAVE_SYS_TIME_H
+    times(&t->tms1);
+    gettimeofday(&t->start_time, 0);
+#endif
+#endif
+    t->real_sec = -1.0;
+    t->user_sec = -1.0;
+    t->sys_sec = -1.0;
+}
+
+void zebra_timing_stop(zebra_timing_t t)
+{
+    t->real_sec = 0.0;
+    t->user_sec = 0.0;
+    t->sys_sec = 0.0;
+#if HAVE_SYS_TIMES_H
+#if HAVE_SYS_TIME_H
+    gettimeofday(&t->end_time, 0);
+    times(&t->tms2);
+    
+    t->real_sec = ((t->end_time.tv_sec - t->start_time.tv_sec) * 1000000.0 +
+                   t->end_time.tv_usec - t->start_time.tv_usec) / 1000000;
+    
+    t->user_sec = (double) (t->tms2.tms_utime - t->tms1.tms_utime)/100;
+    t->sys_sec = (double) (t->tms2.tms_stime - t->tms1.tms_stime)/100;
+#endif
+#endif
+}
+
+double zebra_timing_get_real(zebra_timing_t t)
+{
+    return t->real_sec;
+}
+
+double zebra_timing_get_user(zebra_timing_t t)
+{
+    return t->user_sec;
+}
+
+double zebra_timing_get_sys(zebra_timing_t t)
+{
+    return t->sys_sec;
+}
+
+void zebra_timing_destroy(zebra_timing_t *tp)
+{
+    if (*tp)
+    {
+        xfree(*tp);
+        *tp = 0;
+    }
+}
+
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */
+