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Cache mach_base_info

This commit is contained in:
Richard Jenkins 2017-05-04 22:33:32 +01:00
parent 3d6f13da13
commit f8b79a4a3f
1 changed files with 13 additions and 7 deletions
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20
src/openrct2/platform/shared.c
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@ -81,6 +81,11 @@ static float _gestureRadius;
static void platform_create_window();
#if defined(__APPLE__) && !defined(MACOS_SIERRA_ONWARDS)
mach_timebase_info_data_t mach_base_info = { 0 };
bool mach_info_initialised = false;
#endif
static sint32 resolution_sort_func(const void *pa, const void *pb)
{
const resolution_t *a = (resolution_t*)pa;
@ -776,14 +781,15 @@ uint32 platform_get_ticks()
#ifdef _WIN32
return GetTickCount();
#elif defined(__APPLE__) && !defined(MACOS_SIERRA_ONWARDS)
mach_timebase_info_data_t mach_base_info;
kern_return_t ret = mach_timebase_info(&mach_base_info);
if (ret == 0) {
return (uint32)(((mach_absolute_time() * mach_base_info.numer) / mach_base_info.denom) / 1000000);
} else {
log_fatal("Unable to get mach_timebase_info.");
exit(-1);
if (!mach_info_initialised) {
kern_return_t ret = mach_timebase_info(&mach_base_info);
if (ret != 0) {
log_fatal("Unable to get mach_timebase_info.");
exit(-1);
}
mach_info_initialised = true;
}
return (uint32)(((mach_absolute_time() * mach_base_info.numer) / mach_base_info.denom) / 1000000);
#else
struct timespec ts;
if (clock_gettime(CLOCK_MONOTONIC, &ts) != 0) {