1 /* cairo - a vector graphics library with display and print output
3 * Copyright (c) 2007 Netlabs
4 * Copyright (c) 2006 Mozilla Corporation
5 * Copyright (c) 2006 Red Hat, Inc.
6 * Copyright (c) 2011 Andrea Canciani
8 * Permission to use, copy, modify, distribute, and sell this software
9 * and its documentation for any purpose is hereby granted without
10 * fee, provided that the above copyright notice appear in all copies
11 * and that both that copyright notice and this permission notice
12 * appear in supporting documentation, and that the name of
13 * the authors not be used in advertising or publicity pertaining to
14 * distribution of the software without specific, written prior
15 * permission. The authors make no representations about the
16 * suitability of this software for any purpose. It is provided "as
17 * is" without express or implied warranty.
19 * THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
20 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
21 * FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL,
22 * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
23 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
24 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
25 * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
27 * Authors: Peter Weilbacher <mozilla@weilbacher.org>
28 * Vladimir Vukicevic <vladimir@pobox.com>
29 * Carl Worth <cworth@cworth.org>
30 * Andrea Canciani <ranma42@gmail.com>
35 #include "cairo-time-private.h"
37 #if HAVE_CLOCK_GETTIME
38 #if defined(CLOCK_MONOTONIC_RAW)
39 #define CAIRO_CLOCK CLOCK_MONOTONIC_RAW
40 #elif defined(CLOCK_MONOTONIC)
41 #define CAIRO_CLOCK CLOCK_MONOTONIC
45 #if defined(__APPLE__)
46 #include <mach/mach_time.h>
48 static cairo_always_inline double
51 mach_timebase_info_data_t freq;
53 mach_timebase_info (&freq);
55 return 1000000000. * freq.denom / freq.numer;
59 _cairo_time_get (void)
61 return mach_absolute_time ();
64 #elif defined(__OS2__)
68 static cairo_always_inline double
73 DosTmrQueryFreq (&freq);
79 _cairo_time_get (void)
86 r = _cairo_int64_lsl (_cairo_int32_to_int64 (t.ulHi), 32);
87 r = _cairo_int64_add (r, _cairo_int32_to_int64 (t.ulLo));
93 #define WIN32_LEAN_AND_MEAN
96 static cairo_always_inline double
101 QueryPerformanceFrequency (&freq);
103 return freq.QuadPart;
107 _cairo_time_get (void)
111 QueryPerformanceCounter (&t);
116 #elif defined(CAIRO_CLOCK)
119 static cairo_always_inline double
120 _cairo_time_1s (void)
126 _cairo_time_get (void)
131 clock_gettime (CAIRO_CLOCK, &t);
133 r = _cairo_double_to_int64 (_cairo_time_1s ());
134 r = _cairo_int64_mul (r, _cairo_int32_to_int64 (t.tv_sec));
135 r = _cairo_int64_add (r, _cairo_int32_to_int64 (t.tv_nsec));
141 #include <sys/time.h>
143 static cairo_always_inline double
144 _cairo_time_1s (void)
150 _cairo_time_get (void)
155 gettimeofday (&t, NULL);
157 r = _cairo_double_to_int64 (_cairo_time_1s ());
158 r = _cairo_int64_mul (r, _cairo_int32_to_int64 (t.tv_sec));
159 r = _cairo_int64_add (r, _cairo_int32_to_int64 (t.tv_usec));
167 _cairo_time_cmp (const void *a,
170 const cairo_time_t *ta = a, *tb = b;
171 return _cairo_int64_cmp (*ta, *tb);
175 _cairo_time_ticks_per_sec (void)
177 static double ticks = 0;
179 if (unlikely (ticks == 0))
180 ticks = _cairo_time_1s ();
186 _cairo_time_s_per_tick (void)
190 if (unlikely (s == 0))
191 s = 1. / _cairo_time_ticks_per_sec ();
197 _cairo_time_to_s (cairo_time_t t)
199 return _cairo_int64_to_double (t) * _cairo_time_s_per_tick ();
203 _cairo_time_from_s (double t)
205 return _cairo_double_to_int64 (t * _cairo_time_ticks_per_sec ());