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issue #374 cap cached frames for cachedframeprocessor to 100

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This commit is contained in:
juliandescottes 2016-11-20 01:10:05 +01:00
parent 4b50dfdb5b
commit d08c101b11
1 changed files with 13 additions and 6 deletions
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19
src/js/model/frame/CachedFrameProcessor.js
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@ -1,8 +1,8 @@
(function () {
var ns = $.namespace('pskl.model.frame');
// 10 * 60 * 1000 = 10 minutes
var DEFAULT_CLEAR_INTERVAL = 10 * 60 * 1000;
// Maximum number of cache entries
var MAX_CACHE_ENTRIES = 100;
var DEFAULT_FRAME_PROCESSOR = function (frame) {
return pskl.utils.FrameUtils.toImage(frame);
@ -12,14 +12,16 @@
var DEFAULT_NAMESPACE = '__cache_default__';
ns.CachedFrameProcessor = function (cacheResetInterval) {
ns.CachedFrameProcessor = function () {
// Cache object.
this.cache_ = {};
this.cacheResetInterval = cacheResetInterval || DEFAULT_CLEAR_INTERVAL;
// Array of [namespace, key] for each cached frame.
this.cacheQueue_ = [];
this.frameProcessor = DEFAULT_FRAME_PROCESSOR;
this.outputCloner = DEFAULT_OUTPUT_CLONER;
this.defaultNamespace = DEFAULT_NAMESPACE;
window.setInterval(this.clear.bind(this), this.cacheResetInterval);
};
ns.CachedFrameProcessor.prototype.clear = function () {
@ -69,6 +71,11 @@
} else {
processedFrame = this.frameProcessor(frame);
cache[cacheKey] = processedFrame;
this.cacheQueue_.unshift([namespace, cacheKey]);
if (this.cacheQueue_.length > MAX_CACHE_ENTRIES) {
var oldestItem = this.cacheQueue_.pop();
this.cache_[oldestItem[0]][oldestItem[1]] = null;
}
}
return processedFrame;