#ifndef THREAD_H
#define THREAD_H

#include "system_global.h"
#include <QThread>

namespace paysages
{
namespace system
{

typedef void* (*ThreadFunction)(void* data);

/**
 * System thread
 */
class SYSTEMSHARED_EXPORT Thread: private QThread
{
public:
    /**
     * Create a new thread.
     *
     * The thread is not started automatically. A call to method start() needs to be done.
     *
     * Either the *function* argument should be provided (with the function to call from the
     * thread), or the *run* method overridden.
     */
    Thread(ThreadFunction function=0);

    /**
     * Start the thread, with custom data.
     */
    void start(void* data=0);

    /**
     * Wait for the thread to end, and collect its result.
     *
     * Returns the value returned by the threaded function.
     */
    void* join();

    /**
     * Return true if the thread is currently running.
     */
    inline bool isWorking() const {return not isFinished();}

    static inline void timeSleepMs(unsigned long ms){ QThread::msleep(ms); }

protected:
    /**
     * Function to reimplement if no ThreadFunction has been passed to the constructor.
     */
    virtual void run();

    void* data;
    void* result;

private:
    ThreadFunction function;
};

}
}

#endif // THREAD_H