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Added functions to test usleep, msleep and sleep for accuracy.

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This commit is contained in:
Kai Ludwig 2014-06-15 21:05:23 +02:00
parent 3c42e31b4f
commit 3fbde70f96
1 changed files with 11 additions and 7 deletions
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18
libraries/shared/src/SharedUtil.cpp
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@ -26,6 +26,7 @@
#include <QtCore/QDebug> #include <QtCore/QDebug>
#include <QDateTime> #include <QDateTime>
#include <QElapsedTimer> #include <QElapsedTimer>
#include <QThread>
#include "OctalCode.h" #include "OctalCode.h"
#include "SharedUtil.h" #include "SharedUtil.h"
@ -415,13 +416,16 @@ void printVoxelCode(unsigned char* voxelCode) {
#ifdef _WIN32 #ifdef _WIN32
void usleep(int waitTime) { void usleep(int waitTime) {
__int64 time1 = 0, time2 = 0, sysFreq = 0; quint64 compTime = waitTime + usecTimestampNow();
quint64 compTimeSleep = compTime - 2000;
QueryPerformanceCounter((LARGE_INTEGER *)&time1); while (true) {
QueryPerformanceFrequency((LARGE_INTEGER *)&sysFreq); if (usecTimestampNow() < compTimeSleep) {
do { QThread::msleep(1);
QueryPerformanceCounter((LARGE_INTEGER *)&time2); }
} while( (time2 - time1) < waitTime); if (usecTimestampNow() >= compTime) {
break;
}
}
} }
#endif #endif