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dynamically malloc/free arrays to avoid stack overflow on windows.

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starting with 0 for array index will give a reasonable value for 'first'.
This commit is contained in:
Kai Ludwig 2014-06-03 19:11:53 +02:00
parent 6f5d2ba233
commit 162939fda1
1 changed files with 10 additions and 7 deletions
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17
interface/src/Util.cpp
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@ -400,9 +400,9 @@ bool closeEnoughForGovernmentWork(float a, float b) {
void runTimingTests() { void runTimingTests() {
// How long does it take to make a call to get the time? // How long does it take to make a call to get the time?
const int numTests = 1000000; const int numTests = 1000000;
int iResults[numTests]; int* iResults = (int*)malloc(sizeof(int) * numTests);
float fTest = 1.0; float fTest = 1.0;
float fResults[numTests]; float* fResults = (float*)malloc(sizeof(float) * numTests);
QElapsedTimer startTime; QElapsedTimer startTime;
startTime.start(); startTime.start();
float elapsedUsecs; float elapsedUsecs;
@ -413,7 +413,7 @@ void runTimingTests() {
// Random number generation // Random number generation
startTime.start(); startTime.start();
for (int i = 1; i < numTests; i++) { for (int i = 0; i < numTests; i++) {
iResults[i] = rand(); iResults[i] = rand();
} }
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC; elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
@ -421,16 +421,19 @@ void runTimingTests() {
// Random number generation using randFloat() // Random number generation using randFloat()
startTime.start(); startTime.start();
for (int i = 1; i < numTests; i++) { for (int i = 0; i < numTests; i++) {
fResults[i] = randFloat(); fResults[i] = randFloat();
} }
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC; elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
qDebug("randFloat() stored in array usecs: %f, first result: %f", elapsedUsecs / (float) numTests, fResults[0]); qDebug("randFloat() stored in array usecs: %f, first result: %f", elapsedUsecs / (float) numTests, fResults[0]);
free(iResults);
free(fResults);
// PowF function // PowF function
fTest = 1145323.2342f; fTest = 1145323.2342f;
startTime.start(); startTime.start();
for (int i = 1; i < numTests; i++) { for (int i = 0; i < numTests; i++) {
fTest = powf(fTest, 0.5f); fTest = powf(fTest, 0.5f);
} }
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC; elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
@ -440,7 +443,7 @@ void runTimingTests() {
float distance; float distance;
glm::vec3 pointA(randVector()), pointB(randVector()); glm::vec3 pointA(randVector()), pointB(randVector());
startTime.start(); startTime.start();
for (int i = 1; i < numTests; i++) { for (int i = 0; i < numTests; i++) {
//glm::vec3 temp = pointA - pointB; //glm::vec3 temp = pointA - pointB;
//float distanceSquared = glm::dot(temp, temp); //float distanceSquared = glm::dot(temp, temp);
distance = glm::distance(pointA, pointB); distance = glm::distance(pointA, pointB);
@ -454,7 +457,7 @@ void runTimingTests() {
float result; float result;
startTime.start(); startTime.start();
for (int i = 1; i < numTests; i++) { for (int i = 0; i < numTests; i++) {
glm::vec3 temp = vecA-vecB; glm::vec3 temp = vecA-vecB;
result = glm::dot(temp,temp); result = glm::dot(temp,temp);
} }