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Switch OSX timer to real-time too.

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This commit is contained in:
Pavel Krajcevski 2012-08-31 18:26:59 -04:00
parent f2b9c39801
commit 7b69c38da5
1 changed files with 13 additions and 17 deletions
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30
Core/src/StopWatchOSX.cpp
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@ -3,24 +3,20 @@
#include <stdlib.h>
#include <string.h>
#include <mach/mach_time.h>
#include <sys/time.h>
class StopWatchImpl {
public:
uint64 start;
double resolution;
double duration;
StopWatchImpl() {
mach_timebase_info_data_t info;
mach_timebase_info(&info);
resolution = double(info.numer) / double(info.denom);
resolution *= 1e-9;
}
uint64 duration;
};
static uint64 Now() {
timeval tv;
gettimeofday(&tv, NULL);
return tv.tv_usec + (1e6 * tv.tv_sec);
}
StopWatch::StopWatch(const StopWatch &other) {
impl = new StopWatchImpl();
memcpy(impl, other.impl, sizeof(StopWatchImpl));
@ -43,11 +39,11 @@ StopWatch::StopWatch() : impl(new StopWatchImpl) {
}
void StopWatch::Start() {
impl->start = mach_absolute_time();
impl->start = Now();
}
void StopWatch::Stop() {
impl->duration = impl->resolution * (double(mach_absolute_time()) - impl->start);
impl->duration = Now() - impl->start;
}
void StopWatch::Reset() {
@ -55,13 +51,13 @@ void StopWatch::Reset() {
}
double StopWatch::TimeInSeconds() const {
return impl->duration;
return double(impl->duration) / 1e6;
}
double StopWatch::TimeInMilliseconds() const {
return impl->duration * 1000;
return double(impl->duration) / 1e3;
}
double StopWatch::TimeInMicroseconds() const {
return impl->duration * 1000000;
return double(impl->duration);
}