29.07.2011 - fundamental new

pithread.cpp

@@ -17,7 +17,7 @@ PIThread::~PIThread() {
 
 bool PIThread::start(int timer_delay) {
 	pthread_attr_t attr;
-	terminating = false;
+	terminating = running = false;
 	timer = timer_delay;
 	pthread_attr_init(&attr);
 	pthread_attr_setschedparam(&attr, &sparam);
@@ -29,13 +29,25 @@ bool PIThread::start(int timer_delay) {
 }
 
 
+bool PIThread::startOnce() {
+	pthread_attr_t attr;
+	terminating = running = false;
+	pthread_attr_init(&attr);
+	pthread_attr_setschedparam(&attr, &sparam);
+	if (pthread_create(&thread, &attr, thread_function_once, this) == 0)
+		return true;
+	return false;
+}
+
+
 void * PIThread::thread_function(void * t) {
 	PIThread * ct = (PIThread * )t;
+	ct->running = true;
 	ct->begin();
 	while (!ct->terminating) {
 		if (ct->lockRun) ct->mutex_.lock();
 		ct->run();
-		if (ct->lockRun) ct->mutex_.unlock();;
+		if (ct->lockRun) ct->mutex_.unlock();
 		if (ct->timer > 0) msleep(ct->timer);
 	}
 	ct->end();
@@ -46,9 +58,24 @@ void * PIThread::thread_function(void * t) {
 }
 
 
+void * PIThread::thread_function_once(void * t) {
+	PIThread * ct = (PIThread * )t;
+	ct->running = true;
+	ct->begin();
+	if (ct->lockRun) ct->mutex_.lock();
+	ct->run();
+	if (ct->lockRun) ct->mutex_.unlock();
+	ct->end();
+	ct->running = false;
+	//cout << "thread " << t << " exiting ... " << endl;
+	pthread_exit(0);
+	return 0;
+}
+
+
 void PIThread::setPriority(PIThread::Priority prior) {
 	priority_ = prior;
-#if __QNX__ || __WIN32__
+#ifndef LINUX
 	sparam.sched_priority = (int)priority_;
 #else
 	sparam.__sched_priority = (int)priority_;
@@ -59,3 +86,31 @@ void PIThread::setPriority(PIThread::Priority prior) {
 }
 
 
+bool PIThread::waitForFinish(int timeout_msecs) {
+	if (timeout_msecs < 0) {
+		while (running)
+			msleep(1);
+		return true;
+	}
+	int cnt = 0;
+	while (running && cnt < timeout_msecs) {
+		msleep(1);
+		++cnt;
+	}
+	return cnt < timeout_msecs;
+}
+
+
+bool PIThread::waitForStart(int timeout_msecs) {
+	if (timeout_msecs < 0) {
+		while (!running)
+			msleep(1);
+		return true;
+	}
+	int cnt = 0;
+	while (!running && cnt < timeout_msecs) {
+		msleep(1);
+		++cnt;
+	}
+	return cnt < timeout_msecs;
+}