5 * Gonzalo Paniagua Javier (gonzalo@novell.com
7 * (C) 2006 Novell, Inc.
9 * Permission is hereby granted, free of charge, to any person obtaining
10 * a copy of this software and associated documentation files (the
11 * "Software"), to deal in the Software without restriction, including
12 * without limitation the rights to use, copy, modify, merge, publish,
13 * distribute, sublicense, and/or sell copies of the Software, and to
14 * permit persons to whom the Software is furnished to do so, subject to
15 * the following conditions:
17 * The above copyright notice and this permission notice shall be
18 * included in all copies or substantial portions of the Software.
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
24 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
25 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
36 GTimer *g_timer_new (void)
40 timer = g_new0 (GTimer, 1);
41 g_timer_start (timer);
46 g_timer_destroy (GTimer *timer)
48 g_return_if_fail (timer != NULL);
53 g_timer_start (GTimer *timer)
55 g_return_if_fail (timer != NULL);
57 QueryPerformanceCounter ((LARGE_INTEGER*)&timer->start);
61 g_timer_stop (GTimer *timer)
63 g_return_if_fail (timer != NULL);
65 QueryPerformanceCounter ((LARGE_INTEGER*)&timer->stop);
69 g_timer_elapsed (GTimer *timer, gulong *microseconds)
71 static guint64 freq = 0;
75 if (!QueryPerformanceFrequency ((LARGE_INTEGER *)&freq))
79 if (timer->stop == 0) {
80 QueryPerformanceCounter ((LARGE_INTEGER*)&stop);
86 delta = stop - timer->start;
89 *microseconds = (gulong) (delta * (1000000.0 / freq));
91 return (gdouble) delta / (gdouble) freq;