create sortable, linear list for cache clearing on demand, rather than trying to maintain it in parallel with the cache map
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@ -164,7 +164,6 @@ class LIBCANVAS_API WaveViewCache
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*/
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typedef std::pair<boost::shared_ptr<ARDOUR::AudioSource>,boost::shared_ptr<Entry> > ListEntry;
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typedef std::vector<ListEntry> CacheList;
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CacheList cache_list;
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struct SortByTimestamp {
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bool operator() (const WaveViewCache::ListEntry& a, const WaveViewCache::ListEntry& b) {
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@ -1704,7 +1704,6 @@ WaveViewCache::add (boost::shared_ptr<ARDOUR::AudioSource> src, boost::shared_pt
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ce->timestamp = g_get_monotonic_time ();
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cache_map[src].push_back (ce);
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cache_list.push_back (make_pair (src, ce));
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}
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uint64_t
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@ -1730,10 +1729,18 @@ WaveViewCache::cache_full()
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void
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WaveViewCache::cache_flush ()
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{
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SortByTimestamp sorter;
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/* Build a sortable list of all cache entries */
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CacheList cache_list;
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for (ImageCache::const_iterator cm = cache_map.begin(); cm != cache_map.end(); ++cm) {
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for (CacheLine::const_iterator cl = cm->second.begin(); cl != cm->second.end(); ++cl) {
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cache_list.push_back (make_pair (cm->first, *cl));
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}
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}
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/* sort list in LRU order */
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SortByTimestamp sorter;
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sort (cache_list.begin(), cache_list.end(), sorter);
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while (image_cache_size > _image_cache_threshold && !cache_map.empty() && !cache_list.empty()) {
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