container/SharedRingBuffer.cpp

@@ -3,19 +3,26 @@
 #include <framework/ipc/MutexHelper.h>
 
 SharedRingBuffer::SharedRingBuffer(object_id_t objectId, const size_t size,
-		bool overwriteOld, dur_millis_t mutexTimeout):
-		SystemObject(objectId), SimpleRingBuffer(size, overwriteOld),
-		mutexTimeout(mutexTimeout) {
+		bool overwriteOld, size_t maxExcessBytes, dur_millis_t mutexTimeout):
+		SystemObject(objectId), SimpleRingBuffer(size, overwriteOld,
+		maxExcessBytes), mutexTimeout(mutexTimeout) {
 	mutex = MutexFactory::instance()->createMutex();
 }
 
 SharedRingBuffer::SharedRingBuffer(object_id_t objectId, uint8_t *buffer,
-		const size_t size, bool overwriteOld, dur_millis_t mutexTimeout):
-		SystemObject(objectId), SimpleRingBuffer(buffer, size, overwriteOld),
-		mutexTimeout(mutexTimeout) {
+		const size_t size, bool overwriteOld, size_t maxExcessBytes,
+		dur_millis_t mutexTimeout):
+		SystemObject(objectId), SimpleRingBuffer(buffer, size, overwriteOld,
+		maxExcessBytes), mutexTimeout(mutexTimeout) {
 	mutex = MutexFactory::instance()->createMutex();
 }
 
+ReturnValue_t SharedRingBuffer::getFreeElementProtected(uint8_t** writePtr,
+		size_t amount) {
+	MutexHelper(mutex, mutexTimeout);
+	return SimpleRingBuffer::getFreeElement(writePtr,amount);
+}
+
 ReturnValue_t SharedRingBuffer::writeDataProtected(const uint8_t *data,
 		size_t amount) {
 	MutexHelper(mutex, mutexTimeout);

container/SharedRingBuffer.h

@@ -17,7 +17,8 @@ public:
 	 * will be overwritten.
 	 */
 	SharedRingBuffer(object_id_t objectId, const size_t size,
-			bool overwriteOld, dur_millis_t mutexTimeout = 10);
+			bool overwriteOld, size_t maxExcessBytes,
+			dur_millis_t mutexTimeout = 10);
 
 	/**
 	 * This constructor takes an external buffer with the specified size.
@@ -28,10 +29,14 @@ public:
 	 * will be overwritten.
 	 */
 	SharedRingBuffer(object_id_t objectId, uint8_t* buffer, const size_t size,
-			bool overwriteOld, dur_millis_t mutexTimeout = 10);
+			bool overwriteOld, size_t maxExcessBytes,
+			dur_millis_t mutexTimeout = 10);
 
 	void setMutexTimeout(dur_millis_t newTimeout);
 
+	/** Performs mutex protected SimpleRingBuffer::getFreeElement call */
+	ReturnValue_t getFreeElementProtected(uint8_t** writePtr, size_t amount);
+
 	/** Performs mutex protected SimpleRingBuffer::writeData call */
 	ReturnValue_t writeDataProtected(const uint8_t* data, size_t amount);