Add support for rwlock

src/common/capwap_rwlock.c

@@ -0,0 +1,45 @@
+#include "capwap.h"
+#include "capwap_rwlock.h"
+
+#ifndef CAPWAP_MULTITHREADING_ENABLE
+#error "Warning: multithreading is disabled\n"
+#endif
+
+/* */
+int capwap_rwlock_init(capwap_rwlock_t* lock) {
+	ASSERT(lock != NULL);
+
+	if (pthread_rwlock_init(&lock->rwlock, NULL)) {
+		return 0;
+	}
+
+	return 1;
+}
+
+/* */
+void capwap_rwlock_destroy(capwap_rwlock_t* lock) {
+	ASSERT(lock != NULL);
+
+	pthread_rwlock_destroy(&lock->rwlock);
+}
+
+/* */
+void capwap_rwlock_rdlock(capwap_rwlock_t* lock) {
+	ASSERT(lock != NULL);
+
+	pthread_rwlock_rdlock(&lock->rwlock);
+}
+
+/* */
+void capwap_rwlock_wrlock(capwap_rwlock_t* lock) {
+	ASSERT(lock != NULL);
+
+	pthread_rwlock_wrlock(&lock->rwlock);
+}
+
+/* */
+void capwap_rwlock_exit(capwap_rwlock_t* lock) {
+	ASSERT(lock != NULL);
+
+	pthread_rwlock_unlock(&lock->rwlock);
+}