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Ecore: more precise implementation of ecore_time_get on Windows 

Implement directly monotonic clock on Windows, to have more accurate results

Reviewed-by: João Paulo Taylor Ienczak Zanette <joao.tiz@expertisesolutions.com.br>
Reviewed-by: Stefan Schmidt <stefan@datenfreihafen.org>
Differential Revision: https://phab.enlightenment.org/D12112
This commit is contained in:
Vincent Torri 2020-08-22 05:56:05 +00:00 committed by Stefan Schmidt
parent 45cabae42b
commit 33304d656c
1 changed files with 22 additions and 10 deletions
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32
src/lib/ecore/ecore_time.c
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@ -13,10 +13,16 @@
#include <time.h>
#ifdef _WIN32
# include <evil_private.h> /* gettimeofday */
#endif
#include "Ecore.h"
#include "ecore_private.h"
#if defined (HAVE_CLOCK_GETTIME)
#if defined(_WIN32)
static LONGLONG _ecore_time_freq;
#elif defined (HAVE_CLOCK_GETTIME)
static clockid_t _ecore_time_clock_id;
static Eina_Bool _ecore_time_got_clock_id = EINA_FALSE;
#elif defined(__APPLE__) && defined(__MACH__)
@ -26,7 +32,12 @@ static double _ecore_time_clock_conversion = 1e-9;
EAPI double
ecore_time_get(void)
{
#if defined (HAVE_CLOCK_GETTIME)
#ifdef _WIN32
LARGE_INTEGER count;
QueryPerformanceCounter(&count);
return (double)count.QuadPart/ (double)_ecore_time_freq;
#elif defined (HAVE_CLOCK_GETTIME)
struct timespec t;
if (EINA_UNLIKELY(!_ecore_time_got_clock_id))
@ -39,8 +50,6 @@ ecore_time_get(void)
}
return (double)t.tv_sec + (((double)t.tv_nsec) / 1000000000.0);
#elif defined(_WIN32)
return evil_time_get();
#elif defined(__APPLE__) && defined(__MACH__)
return _ecore_time_clock_conversion * (double)mach_absolute_time();
#else
@ -82,7 +91,12 @@ ecore_loop_time_set(double t)
void
_ecore_time_init(void)
{
#if defined(HAVE_CLOCK_GETTIME)
#if defined(_WIN32)
LARGE_INTEGER freq;
QueryPerformanceFrequency(&freq);
_ecore_time_freq = freq.QuadPart;
#elif defined(HAVE_CLOCK_GETTIME)
struct timespec t;
if (_ecore_time_got_clock_id) return;
@ -103,18 +117,16 @@ _ecore_time_init(void)
else
CRI("Cannot get a valid clock_gettime() clock id! Fallback to unix time");
#else
# ifndef _WIN32
# if defined(__APPLE__) && defined(__MACH__)
# if defined(__APPLE__) && defined(__MACH__)
mach_timebase_info_data_t info;
kern_return_t err = mach_timebase_info(&info);
if (err == 0)
  _ecore_time_clock_conversion = 1e-9 * (double)info.numer / (double)info.denom;
else
WRN("Unable to get timebase info. Fallback to nanoseconds");
# else
# warning "Your platform isn't supported yet"
# else
# warning "Your platform isn't supported yet"
CRI("Platform does not support clock_gettime. Fallback to unix time");
# endif
# endif
#endif
ecore_loop_time_set(ecore_time_get());