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/* cairo - a vector graphics library with display and print output
*
* Copyright (c) 2007 Netlabs
* Copyright (c) 2006 Mozilla Corporation
* Copyright (c) 2006 Red Hat, Inc.
* Copyright (c) 2011 Andrea Canciani
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without
* fee, provided that the above copyright notice appear in all copies
* and that both that copyright notice and this permission notice
* appear in supporting documentation, and that the name of
* the authors not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. The authors make no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Authors: Peter Weilbacher <mozilla@weilbacher.org>
* Vladimir Vukicevic <vladimir@pobox.com>
* Carl Worth <cworth@cworth.org>
* Andrea Canciani <ranma42@gmail.com>
*/
#include "cairoint.h"
#include "cairo-time-private.h"
#if HAVE_CLOCK_GETTIME
#if defined(CLOCK_MONOTONIC_RAW)
#define CAIRO_CLOCK CLOCK_MONOTONIC_RAW
#elif defined(CLOCK_MONOTONIC)
#define CAIRO_CLOCK CLOCK_MONOTONIC
#endif
#endif
#if defined(__APPLE__)
#include <mach/mach_time.h>
static cairo_always_inline double
_cairo_time_1s (void)
{
mach_timebase_info_data_t freq;
mach_timebase_info (&freq);
return 1000000000. * freq.denom / freq.numer;
}
cairo_time_t
_cairo_time_get (void)
{
return mach_absolute_time ();
}
#elif defined(__OS2__)
#define INCL_BASE
#include <os2.h>
static cairo_always_inline double
_cairo_time_1s (void)
{
ULONG freq;
DosTmrQueryFreq (&freq);
return freq;
}
cairo_time_t
_cairo_time_get (void)
{
QWORD t;
cairo_int64_t r;
DosTmrQueryTime (&t);
r = _cairo_int64_lsl (_cairo_int32_to_int64 (t.ulHi), 32);
r = _cairo_int64_add (r, _cairo_int32_to_int64 (t.ulLo));
return r;
}
#elif _WIN32
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
static cairo_always_inline double
_cairo_time_1s (void)
{
LARGE_INTEGER freq;
QueryPerformanceFrequency (&freq);
return freq.QuadPart;
}
cairo_time_t
_cairo_time_get (void)
{
LARGE_INTEGER t;
QueryPerformanceCounter (&t);
return t.QuadPart;
}
#elif defined(CAIRO_CLOCK)
#include <time.h>
static cairo_always_inline double
_cairo_time_1s (void)
{
return 1000000000;
}
cairo_time_t
_cairo_time_get (void)
{
struct timespec t;
cairo_time_t r;
clock_gettime (CAIRO_CLOCK, &t);
r = _cairo_double_to_int64 (_cairo_time_1s ());
r = _cairo_int64_mul (r, _cairo_int32_to_int64 (t.tv_sec));
r = _cairo_int64_add (r, _cairo_int32_to_int64 (t.tv_nsec));
return r;
}
#else
#include <sys/time.h>
static cairo_always_inline double
_cairo_time_1s (void)
{
return 1000000;
}
cairo_time_t
_cairo_time_get (void)
{
struct timeval t;
cairo_time_t r;
gettimeofday (&t, NULL);
r = _cairo_double_to_int64 (_cairo_time_1s ());
r = _cairo_int64_mul (r, _cairo_int32_to_int64 (t.tv_sec));
r = _cairo_int64_add (r, _cairo_int32_to_int64 (t.tv_usec));
return r;
}
#endif
int
_cairo_time_cmp (const void *a,
const void *b)
{
const cairo_time_t *ta = a, *tb = b;
return _cairo_int64_cmp (*ta, *tb);
}
static double
_cairo_time_ticks_per_sec (void)
{
static double ticks = 0;
if (unlikely (ticks == 0))
ticks = _cairo_time_1s ();
return ticks;
}
static double
_cairo_time_s_per_tick (void)
{
static double s = 0;
if (unlikely (s == 0))
s = 1. / _cairo_time_ticks_per_sec ();
return s;
}
double
_cairo_time_to_s (cairo_time_t t)
{
return _cairo_int64_to_double (t) * _cairo_time_s_per_tick ();
}
cairo_time_t
_cairo_time_from_s (double t)
{
return _cairo_double_to_int64 (t * _cairo_time_ticks_per_sec ());
}
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