First commit

src/common/capwap_event.c

@@ -0,0 +1,99 @@
+#include "capwap.h"
+#include "capwap_event.h"
+
+#ifndef CAPWAP_MULTITHREADING_ENABLE
+#error "Warning: multithreading is disabled\n"
+#endif
+
+/* */
+int capwap_event_init(capwap_event_t* e) {
+	ASSERT(e != NULL);
+
+	e->set = 0;
+	
+    if (pthread_cond_init(&e->event, NULL) != 0) {
+    	return 0;
+    }
+    	
+    if (pthread_mutex_init(&e->mutex, NULL) != 0) {
+    	pthread_cond_destroy(&e->event);
+    	return 0;
+    }
+    	
+    return 1;
+}
+
+/* */
+void capwap_event_destroy(capwap_event_t* e) {
+	ASSERT(e != NULL);
+	
+	pthread_cond_destroy(&e->event);
+	pthread_mutex_destroy(&e->mutex);
+}
+
+/* */
+void capwap_event_signal(capwap_event_t* e) {
+	ASSERT(e != NULL);
+
+	pthread_mutex_lock(&e->mutex);
+	
+	e->set = 1;
+	pthread_cond_signal(&e->event);
+	
+	pthread_mutex_unlock(&e->mutex);
+}
+
+/* */
+void capwap_event_reset(capwap_event_t* e) {
+	ASSERT(e != NULL);
+
+	pthread_mutex_lock(&e->mutex);
+	
+	e->set = 0;
+
+	pthread_mutex_unlock(&e->mutex);
+}
+
+/* */
+void capwap_event_wait(capwap_event_t* e) {
+	capwap_event_wait_timeout(e, -1);
+}
+
+/* */
+int capwap_event_wait_timeout(capwap_event_t* e, long timeout) {
+	int result = 0;
+	
+	ASSERT(e != NULL);
+	
+	pthread_mutex_lock(&e->mutex);
+	
+	if (e->set) {
+		result = 1;
+	} else if (timeout < 0) {
+		if (!pthread_cond_wait(&e->event, &e->mutex)) {
+			result = 1;
+		}
+	} else {
+		struct timeval tp;
+			
+		gettimeofday(&tp, NULL);
+		tp.tv_sec += timeout / 1000;
+		tp.tv_usec += ((timeout % 1000) * 1000);
+		if (tp.tv_usec > 1000000) {
+			tp.tv_sec++;
+			tp.tv_usec -= 1000000;
+		}
+
+		struct timespec ts;
+		ts.tv_sec  = tp.tv_sec;
+		ts.tv_nsec = tp.tv_usec * 1000;
+		if (!pthread_cond_timedwait(&e->event, &e->mutex, &ts)) {
+			result = 1;
+		}
+	}
+	
+	e->set = 0;
+	pthread_mutex_unlock(&e->mutex);
+	
+	return result;
+}