version 4.6.0

PIThreadNotifier::waitFor() new method
PIThread::waitForFinish() now use condvar to exit as soon as possible

libs/main/thread/pithread.h

@@ -26,6 +26,7 @@
 #ifndef PITHREAD_H
 #define PITHREAD_H
 
+#include "piconditionvar.h"
 #include "piinit.h"
 #include "pimutex.h"
 #include "piobject.h"
@@ -286,10 +287,11 @@ protected:
 	PISystemTime delay_;
 	llong tid_   = -1;
 	void * data_ = nullptr;
-	mutable PIMutex thread_mutex;
+	mutable PIMutex thread_mutex, state_mutex;
 	PITimeMeasurer tmf_, tms_, tmr_;
 	PIThread::Priority priority_ = piNormal;
 	ThreadFunc ret_func          = nullptr;
+	PIConditionVariable state_var;
 	PRIVATE_DECLARATION(PIP_EXPORT)
 
 private:
@@ -297,6 +299,7 @@ private:
 	void _beginThread();
 	void _runThread();
 	void _endThread();
+	bool _waitForFinish(PISystemTime max_tm);
 
 	PIByteArray createThreadName(int size = 16) const;
 	void setThreadName();