I need to run multiple (up to 50 or more) Qt Script Functions concurrently. Running two or three Threads with Script Functions works just fine, but as soon as I run around 50 Threads, I get an Error and my Program crashes.
ASSERTION FAILED: globalData().dynamicGlobalObject (..\3rdparty\javascriptcore\JavaScriptCore\runtime/JSGlobalObject.h:411 QTJSC::JSGlobalObject* QTJSC::ExecState::dynamicGlobalObject())
My main.cpp looks like this:
#include <QCoreApplication>
#include <QScriptEngine>
#include <threadworker.h>
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
QScriptEngine engine;
QScriptValue val = engine.evaluate("(function() {var r = Math.random(); while(1>0) print(r);})");
ThreadWorker *worker[50];
for(int i=0;i<50;i++) {
worker[i] = new ThreadWorker(val);
QObject::connect(worker[i], SIGNAL(needsStarting()), worker[i], SLOT(startScript()));
emit worker[i]->needsStarting();
}
return a.exec();
}
This is my threadworker.h:
#ifndef THREADWORKER_H
#define THREADWORKER_H
#include <QObject>
#include <QScriptValue>
#include <QThread>
class ThreadWorker : public QObject
{
Q_OBJECT
public:
explicit ThreadWorker(QObject *parent = 0);
explicit ThreadWorker(QScriptValue function);
signals:
needsStarting();
public slots:
void startScript();
private:
QScriptValue value;
QThread thread;
};
#endif // THREADWORKER_H
This is my threadworker.cpp:
#include "threadworker.h"
#include <QDebug>
ThreadWorker::ThreadWorker(QObject *parent) : QObject(parent)
{
}
ThreadWorker::ThreadWorker(QScriptValue function)
{
value = function;
this->moveToThread(&thread);
thread.start();
}
void ThreadWorker::startScript()
{
value.call();
}
I expected, that independently of the amount, the Qt Script Threads would run just fine and I can't understand what is causing this contrary behaviour.