30.11.2010 - initial commit

pithread.cpp

@@ -0,0 +1,61 @@
+#include "pithread.h"
+
+
+PIThread::PIThread(bool startNow, int timer_delay) {
+	running = lockRun = false;
+	priority_ = piNormal;
+	timer = timer_delay;
+	if (startNow) start(timer_delay);
+}
+
+
+PIThread::~PIThread() {
+	if (!running) return;
+	pthread_cancel(thread);
+}
+
+
+bool PIThread::start(int timer_delay) {
+	pthread_attr_t attr;
+	terminating = false;
+	timer = timer_delay;
+	pthread_attr_init(&attr);
+	pthread_attr_setschedparam(&attr, &sparam);
+	if (pthread_create(&thread, &attr, thread_function, this) == 0) {
+		running = true;
+		return true;
+	}
+	return false;
+}
+
+
+void * PIThread::thread_function(void * t) {
+	PIThread * ct = (PIThread * )t;
+	ct->begin();
+	while (!ct->terminating) {
+		if (ct->lockRun) ct->mutex_.lock();
+		ct->run();
+		if (ct->lockRun) ct->mutex_.unlock();;
+		if (ct->timer > 0) msleep(ct->timer);
+	}
+	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__
+	sparam.sched_priority = (int)priority_;
+#else
+	sparam.__sched_priority = (int)priority_;
+#endif
+	if (!running) return;
+	pthread_getschedparam(thread, &policy, &sparam);
+	pthread_setschedparam(thread, policy, &sparam);
+}
+
+