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comparison mupdf-source/thirdparty/openjpeg/src/lib/openjp2/opj_clock.c @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 /*
2 * The copyright in this software is being made available under the 2-clauses
3 * BSD License, included below. This software may be subject to other third
4 * party and contributor rights, including patent rights, and no such rights
5 * are granted under this license.
6 *
7 * Copyright (c) 2005, Herve Drolon, FreeImage Team
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
23 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include "opj_includes.h"
33
34 #ifdef _WIN32
35 #include <windows.h>
36 #else
37 #include <sys/time.h>
38 #include <sys/resource.h>
39 #include <sys/times.h>
40 #endif /* _WIN32 */
41
42 OPJ_FLOAT64 opj_clock(void)
43 {
44 #ifdef _WIN32
45 /* _WIN32: use QueryPerformance (very accurate) */
46 LARGE_INTEGER freq, t ;
47 /* freq is the clock speed of the CPU */
48 QueryPerformanceFrequency(&freq) ;
49 /* cout << "freq = " << ((double) freq.QuadPart) << endl; */
50 /* t is the high resolution performance counter (see MSDN) */
51 QueryPerformanceCounter(& t) ;
52 return ((OPJ_FLOAT64) t.QuadPart / (OPJ_FLOAT64) freq.QuadPart) ;
53 #else
54 /* Unix or Linux: use resource usage */
55 struct rusage t;
56 OPJ_FLOAT64 procTime;
57 /* (1) Get the rusage data structure at this moment (man getrusage) */
58 getrusage(0, &t);
59 /* (2) What is the elapsed time ? - CPU time = User time + System time */
60 /* (2a) Get the seconds */
61 procTime = (OPJ_FLOAT64)(t.ru_utime.tv_sec + t.ru_stime.tv_sec);
62 /* (2b) More precisely! Get the microseconds part ! */
63 return (procTime + (OPJ_FLOAT64)(t.ru_utime.tv_usec + t.ru_stime.tv_usec) *
64 1e-6) ;
65 #endif
66 }
67