blob: 6618d158cf72965886fca304b337a068aa339e83 [file] [log] [blame]
DRCa8b8b472011-05-22 13:55:17 +00001/*
2 * Copyright (C)2011 D. R. Commander. All Rights Reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * - Redistributions of source code must retain the above copyright notice,
8 * this list of conditions and the following disclaimer.
9 * - Redistributions in binary form must reproduce the above copyright notice,
10 * this list of conditions and the following disclaimer in the documentation
11 * and/or other materials provided with the distribution.
12 * - Neither the name of the libjpeg-turbo Project nor the names of its
13 * contributors may be used to endorse or promote products derived from this
14 * software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifdef _WIN32
30
31#include <windows.h>
32
33static double getfreq(void)
34{
35 LARGE_INTEGER freq;
36 if(!QueryPerformanceFrequency(&freq)) return 0.0;
37 return (double)freq.QuadPart;
38}
39
DRC43484642011-05-24 17:03:51 +000040static double f=-1.0;
DRCa8b8b472011-05-22 13:55:17 +000041
42double gettime(void)
43{
44 LARGE_INTEGER t;
DRC43484642011-05-24 17:03:51 +000045 if(f<0.0) f=getfreq();
DRCa8b8b472011-05-22 13:55:17 +000046 if(f==0.0) return (double)GetTickCount()/1000.;
47 else
48 {
49 QueryPerformanceCounter(&t);
50 return (double)t.QuadPart/f;
51 }
52}
53
54#else
55
DRC61d06e72011-05-24 13:37:01 +000056#include <stdlib.h>
DRCa8b8b472011-05-22 13:55:17 +000057#include <sys/time.h>
58
59double gettime(void)
60{
61 struct timeval tv;
62 if(gettimeofday(&tv, NULL)<0) return 0.0;
63 else return (double)tv.tv_sec+((double)tv.tv_usec/1000000.);
64}
65
66#endif