Method GetSmallestFrame

src/CacheDisk.cpp:244–264

Get the smallest frame number (or NULL shared_ptr if no frame is found)

// Get the smallest frame number (or NULL shared_ptr if no frame is found)
std::shared_ptr<Frame> CacheDisk::GetSmallestFrame()
{
	// Create a scoped lock, to protect the cache from multiple threads
	const std::lock_guard<std::recursive_mutex> lock(*cacheMutex);

	// Loop through frame numbers
	std::deque<int64_t>::iterator itr;
	int64_t smallest_frame = -1;
	for(itr = frame_numbers.begin(); itr != frame_numbers.end(); ++itr)
	{
		if (*itr < smallest_frame || smallest_frame == -1)
			smallest_frame = *itr;
	}

	// Return frame (if any)
	if (smallest_frame != -1) {
		return GetFrame(smallest_frame);
	} else {
		return NULL;
	}
}

// Gets the maximum bytes value
int64_t CacheDisk::GetBytes()