Method Touch

src/CacheDisk.cpp:338–361

Move frame to front of queue (so it lasts longer)

// Move frame to front of queue (so it lasts longer)
void CacheDisk::Touch(int64_t frame_number)
{
	// Does frame exists in cache?
	if (frames.count(frame_number))
	{
		// 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;
		for(itr = frame_numbers.begin(); itr != frame_numbers.end(); ++itr)
		{
			if (*itr == frame_number)
			{
				// erase frame number
				frame_numbers.erase(itr);

				// add frame number to 'front' of queue
				frame_numbers.push_front(frame_number);
				break;
			}
		}
	}
}

// Clear the cache of all frames
void CacheDisk::Clear()