threads.h

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#ifdef _WIN32
#include <process.h>
#else
#include <pthread.h>
#endif
namespace pfc {
    t_size getOptimalWorkerThreadCount();
    t_size getOptimalWorkerThreadCountEx(t_size taskCountLimit);

    class thread {
    public:
        PFC_DECLARE_EXCEPTION(exception_creation, exception, "Could not create thread");
        thread();
        ~thread() {PFC_ASSERT(!isActive()); waitTillDone();}
        void startWithPriority(int priority);
        void setPriority(int priority);
        int getPriority();
        void start();
        bool isActive() const;
        void waitTillDone() {close();}
        static int currentPriority();
#ifdef _WINDOWS
        void winStart(int priority, DWORD * outThreadID); 
        HANDLE winThreadHandle() { return m_thread; }
#endif
    protected:
        virtual void threadProc() {PFC_ASSERT(!"Stub thread entry - should not get here");}
    private:
        void close();
#ifdef _WINDOWS
        static unsigned CALLBACK g_entry(void* p_instance);
#else
        static void * g_entry( void * arg );
#endif
        void entry();
        
#ifdef _WINDOWS
        HANDLE m_thread;
#else
        pthread_t m_thread;
        bool m_threadValid; // there is no invalid pthread_t, so we keep a separate 'valid' flag
#endif

#ifdef __APPLE__
        static void appleStartThreadPrologue();
#endif
        PFC_CLASS_NOT_COPYABLE_EX(thread)
    };
}