| /* |
| * Copyright (C)2011 D. R. Commander. All Rights Reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * - Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * - Neither the name of the libjpeg-turbo Project nor the names of its |
| * contributors may be used to endorse or promote products derived from this |
| * software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS", |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifdef _WIN32 |
| |
| #include <windows.h> |
| |
| static double getfreq(void) |
| { |
| LARGE_INTEGER freq; |
| if(!QueryPerformanceFrequency(&freq)) return 0.0; |
| return (double)freq.QuadPart; |
| } |
| |
| static double f=getfreq(); |
| |
| double gettime(void) |
| { |
| LARGE_INTEGER t; |
| if(f==0.0) return (double)GetTickCount()/1000.; |
| else |
| { |
| QueryPerformanceCounter(&t); |
| return (double)t.QuadPart/f; |
| } |
| } |
| |
| #else |
| |
| #include <sys/time.h> |
| |
| double gettime(void) |
| { |
| struct timeval tv; |
| if(gettimeofday(&tv, NULL)<0) return 0.0; |
| else return (double)tv.tv_sec+((double)tv.tv_usec/1000000.); |
| } |
| |
| #endif |