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Shibu's Diary: JavaScriptã®ãƒ¡ãƒ¢ãƒªãƒªãƒ¼ã‚¯ã‚’10å€é€Ÿã§ç™ºè¦‹ã™ã‚‹
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svartalfheim.jp - iPhoneWebアプリã§ã®ãƒ¡ãƒ¢ãƒªãƒªãƒ¼ã‚¯ã®èª¿ã¹æ–¹
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ClassLoader Leak Patterns
1. クラスãƒãƒ¼ãƒ€ リークパターン ãªã«ãã‚ŒãŠã„ã—ã„ã®ï¼Ÿ Takayoshi Kimura Senior Software Maintenance Engineer, JBoss Global Support Service Red Hat
メモリーリークパターンをç†è§£ã™ã‚‹ - babu_babu_babooã®ã‚´ãƒŸç®±
メモリーリークã«é–¢ã™ã‚‹è¦šãˆæ›¸ã メモリーリークã¨ã¯ コンピュータã®å‹•ä½œä¸ã«ã€ä½¿ç”¨å¯èƒ½ãªãƒ¡ãƒ¢ãƒªå®¹é‡ãŒã€ã ã‚“ã ん減ã£ã¦ã„ãç¾è±¡ã€‚ OSやアプリケーションソフトãŒã€å‡¦ç†ã®ãŸã‚ã«å 有ã—ãŸãƒ¡ãƒ¢ãƒªé ˜åŸŸã‚’ã€è§£æ”¾ã—ãªã„ã¾ã¾æ”¾ç½®ã—ã¦ã—ã¾ã†ãŸã‚ã«èµ·ãる。 メモリーリークパターン（以下ã®ã‚¿ã‚¤ãƒ—を考察） ドã‚ュメントツリーã«å±žã•ãªã„ノードã«ã€ã‚¤ãƒ™ãƒ³ãƒˆã‚’貼り付ã‘ãŸå ´åˆã€‚ DOM プãƒã‚»ãƒƒã‚µãŒç®¡ç†ã—ã¦ã„るオブジェクトã¨ã€ã‚¹ã‚¯ãƒªãƒ—トエンジンãŒç®¡ç†ã—ã¦ã„るオブジェクトã€ãŒæ··åœ¨ã—ãŸå ´åˆ ã„ã‚ゆるクãƒãƒ¼ã‚¸ãƒ£ãŒã€ãã®æ··åœ¨ã‚’æ‹›ãパターン（ã“ã‚ŒãŒé›£è§£ï¼‰ メモリーリークã«è©²å½“ã—ãªã„ã‚‚ã® DOM プãƒã‚»ãƒƒã‚µãŒç®¡ç†ã—ã¦ã„る変数ãŒã€ã‚°ãƒãƒ¼ãƒãƒ«å¤‰æ•°ã§ã‚ã‚‹ window, document ã¯ã€ã‚°ãƒãƒ¼ãƒãƒ«å¤‰æ•°ãªã®ã§ã€è©²å½“ã—ãªã„。 ドã‚ュメントツリーã«å±žã•ãªã„ノードã«ã€ã‚¤ãƒ™ãƒ³ãƒˆã‚’貼り付ã‘ãŸå ´åˆ ãƒšãƒ¼ã‚¸ã‚’ç ´æ£„ã™ã‚‹ã¨ãã«ã€ãƒ‰ã‚ュメントツリーã®ãƒŽãƒ¼ãƒ‰
Perl5.10.0ã§ã¯ã‚¯ãƒãƒ¼ã‚¸ãƒ£ã‚’ãƒã‚¹ãƒˆã—ãŸã¨ãã®ãƒ¡ãƒ¢ãƒªãƒªãƒ¼ã‚¯ãŒè§£æ¶ˆã•ã‚Œã¦ã„ã‚‹ã¿ãŸã„ - sub usuilog;
Perl5.8ã¾ã§ã¯ã‚¯ãƒãƒ¼ã‚¸ãƒ£ã‚’ãƒã‚¹ãƒˆã—ãŸå ´åˆã«ãƒ¡ãƒ¢ãƒªãƒ¼ãƒªãƒ¼ã‚¯ãŒç™ºç”Ÿã™ã‚‹ã¨ã„ã†å•é¡ŒãŒã‚ã‚Šã¾ã—ãŸãŒã€5.10.0ã§ã¯è§£æ¶ˆã•ã‚Œã¦ã„るよã†ã§ã™ã€‚ 例ãˆã°ä»¥ä¸‹ã®ã‚ˆã†ãªã‚½ãƒ¼ã‚¹ã‚’実行ã™ã‚‹ã¨ use strict; use Devel::Leak::Object qw(GLOBAL_bless); package Foo; sub new { my $class = shift; return bless { id => shift }, $class; } sub DESTROY { my $self = shift; print "Destroy @{[$self->{id}]} $self\n"; } package main; sub main ($) { my $j = shift; print "# MAIN BLOCK START\n"; my $foo = Foo->new( $j );
Ext JS 3.1ã€IEã«ãŠã‘る動作ã®æ”¹å–„ã¨DOMリークã®é™¤åŽ» | エンタープライズ | マイコミジャーナル
Ext - A foundation you can build on Extã¯17æ—¥(米国時間)ã€Ext JSã®æœ€æ–°ç‰ˆã¨ãªã‚‹Ext JS 3.1を公開ã—ãŸã€‚Ext JSã¯JavaScriptã§é–‹ç™ºã•ã‚ŒãŸWebアプリケーションフレームワーク。軽é‡ã§é«˜ã„拡張性をæä¾›ã—ãªãŒã‚‰ã€ãƒ‡ã‚¹ã‚¯ãƒˆãƒƒãƒ—エクスペリエンスã¨è¿‘ã„滑らã‹ãªå‹•ä½œã‚’実ç¾ã—ã¦ã„る。 3.1ã¯æ–°æ©Ÿèƒ½ã®æ供以外ã«ãƒ‘フォーマンスを改善ã™ã‚‹ã“ã¨ã«åŠ›ãŒç½®ã‹ã‚Œã¦ã„る点ãŒæ³¨ç›®ã•ã‚Œã‚‹ã€‚ã™ã¹ã¦ã®ã‚³ãƒ³ãƒãƒ¼ãƒãƒ³ãƒˆã§DOMå‚照をé©åˆ‡ã«å‰Šé™¤ã™ã‚‹ã‚ˆã†ã«ãƒªãƒ•ã‚¡ã‚¯ã‚¿ãƒªãƒ³ã‚°ã‚’実施ã•ã‚ŒãŸã»ã‹ã€IEã«å˜åœ¨ã—ã¦ã„ã‚‹JavaScriptオブジェクトã®æ‰±ã„ã«é–¢ã™ã‚‹å•é¡Œã‚’回é¿ã™ã‚‹å‡¦ç†ãŒè¿½åŠ ã•ã‚Œã¦ã„る。長期ã«æ¸¡ã£ã¦Webアプリを実行ã—ãŸã‚±ãƒ¼ã‚¹ã§50å€ã‚’越ãˆã‚‹ãƒ¡ãƒ¢ãƒªå®¹é‡ã®æ¶ˆè²»å‰Šæ¸›ãŒç¢ºèªã•ã‚ŒãŸã¨è¨˜è¼‰ãŒã‚る。 500æ“作後ã®DOMè¦ç´ æ•°ã®é•ã„ Ext JS 3.0 vs 3.1 on IE
GPDE Team Blog : JavaScript Memory Leak Detector
Archived MSDN and TechNet Blogs 2/7/2020 2 minutes to read MSDN and TechNet blog sites have been retired, and blog content has been migrated and archived here. Archived blogs are grouped alphabetically by the initial letter of the blog name. Blogs and blog posts can be searched by their names, using the Search box at the top of the page. Actively updated blogs have been moved to other blog sites,
Webアプリケーション開発ã«å½¹ç«‹ã¤ã‚¢ãƒ‰ã‚ªãƒ³å¼ãƒ¡ãƒ¢ãƒªãƒ—ãƒãƒ•ã‚¡ã‚¤ãƒ©ãƒ¼ - Mozilla Flux
Memory Profilerã¯Mozilla Labsã®å®Ÿé¨“çš„ãªãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆã®ä¸€ã¤ã§ã€Webページã®ãƒ¡ãƒ¢ãƒªä½¿ç”¨çŠ¶æ³ã‚’調査ã™ã‚‹ãƒ„ールをæä¾›ã™ã‚‹ã‚‚ã®ã 。 é•·ã„時間ã«ã‚ãŸã£ã¦Webブラウザã«å¸¸é§ã•ã›ã¦ãŠãタイプã®WebアプリケーションãŒå¢—ãˆã¤ã¤ã‚る昨今ã€ã“ã†ã—ãŸãƒ„ールã«å¯¾ã™ã‚‹éœ€è¦ã‚‚高ã¾ã£ã¦ã„ã‚‹ã¨ã„ãˆã‚‹ã ã‚ã†ã€‚ã ãŒã€Atul Varmaæ°ãŒã€ŽWeb Application Memory Profiling, Take Twoã€ã§èª¬æ˜Žã—ã¦ã„るよã†ã«ã€ä»Šå¹´7月ã«å…¬é–‹ã•ã‚ŒãŸæœ€åˆã®ãƒ—ãƒãƒˆã‚¿ã‚¤ãƒ—ã«ã¯æ¬¡ã®ã‚ˆã†ãªæ¬ 点ãŒã‚ã£ãŸã€‚ 動作ãŒé…ã„ Firefoxã®JSヒープ全体を表示ã—ã¦ã„ãŸãŒã€ãã“ã«ã¯Web開発者ã«ã¨ã£ã¦ã•ã»ã©å½¹ã«ç«‹ãŸãªã„Firefoxã®å†…部オブジェクトãŒãŸãã•ã‚“å«ã¾ã‚Œã¦ã„㟠FirefoxãŒãƒ•ãƒªãƒ¼ã‚ºã—ã€åˆ¥ã®ãƒ–ラウザã‹ã‚‰ãƒãƒ¼ã‚«ãƒ«ã®Webサーãƒãƒ¼ã«ã‚¢ã‚¯ã‚»ã‚¹ã™ã‚‹ã“ã¨ã‚‚å«ã‚ã€ã‚»ãƒƒãƒˆã‚¢ãƒƒãƒ—ãŒã‚„や大変ã ã£ãŸ
Neil Fraser: News: JSONP Memory Leak
27 July 2009 [Sorry, this is a technical post. Non-programmers should probably skip this and listen to some nice accordion music instead.] Occasionally one has to defeat the same-origin policy and exchange data from a 3rd party server. The least ugly hack is the badly named JSONP technique. Basically you create a script tag, append it to head, then it will fetch a remote JavaScript file and execut
IEã§ãƒ¡ãƒ¢ãƒªãƒªãƒ¼ã‚¯ã—ã¦ã‚‹ç®‡æ‰€ã‚’検出ã—ã¾ãる方法 - hagino3000's blog
JavaScript Memory Leak Detectorã®ver. 2ãŒå‡ºã¦ãŸã®ã§ãƒªãƒ³ã‚¯ä¿®æ£ å‰ã‹ã‚‰æ°—ã«ãªã£ã¦ã„ãŸãƒ„ールを実際ã«ä½¿ã£ã¦ã¿ãŸã®ã§ãƒ¡ãƒ¢ã€‚ javascriptã§ãƒ¡ãƒ¢ãƒªãƒªãƒ¼ã‚¯ã—ã¦ã„る箇所ã®æ¤œå‡ºã¯JavaScript Memory Leak Detectorã€IEã®ä½¿ç”¨ãƒ¡ãƒ¢ãƒªã®ãƒã‚§ãƒƒã‚¯ã¯Process Explorerを使ã†ã€‚インストールã¯ãã‚Œãžã‚Œæ¬¡ã®ãƒªãƒ³ã‚¯ã‚’å‚照。ã©ã¡ã‚‰ã‚‚windowsã®å†èµ·å‹•ã¯ã„らãªã„ã£ã¦æ›¸ã„ã¦ã‚ã‚‹ã‘ã©ã€ç§ã¯å†èµ·å‹•ã—ãªã„ã¨ä½¿ãˆã¾ã›ã‚“ã§ã—ãŸã€‚ GPDE Team Blog : JavaScript Memory Leak Detector (v2) http://blogs.msdn.com/gpde/pages/javascript-memory-leak-detector_v2.aspx GPDE Team Blog : JavaScript Memor
IEメモリリークã®æœ€å¾Œã®å£ã¯Ajaxã®onreadystatechangeã‚„ã£ãŸï¼ï¼ - SEã®è¡Œãç€ãã¨ã“ã‚…
今日ã¯IEã®ãƒ¡ãƒ¢ãƒªãƒªãƒ¼ã‚¯å¯¾ç–ã«æ³¨åŠ›ã—㟠- SEã®è¡Œãç€ãã¨ã“ã‚…ã®ç¶šã。ã¤ã„ã«ã¤ã„ã«è§£æ±ºã—ãŸã€‚解決ã®ç³¸å£(ã¨ã„ã†ã‹ç”ãˆ)ã¯Prototype.jsã«ã—ã£ã‹ã‚Šã¨æ›¸ã„ã¦ãŸã‚„ã‚“ã‹ï¼ // avoid memory leak in MSIE: clean up this.transport. onreadystatechange = Prototype.emptyFunction; ã©ã†ã‚„らDOMオブジェクトã ã‘ã§ãªãã€new ActiveXObject('Msxml2.XMLHTTP')もメモリリークã™ã‚‹æ¨¡æ§˜ã€‚(確ã‹ã«è€ƒãˆã¦ã¿ã‚Šã‚ƒãã£ã¡ã®æ–¹ãŒãƒªãƒ¼ã‚¯ã—ãã†ãƒ»ãƒ») ã“ã“ã§ãƒã‚¤ãƒ³ãƒˆã ã£ãŸã®ã¯onreadystatechangeã«ã€Œnullã€ã‚’入れã¦ã‚‚効果ãŒãªãã€é–¢æ•°å¤–ã§å®šç¾©ã•ã‚ŒãŸ(ã§ãã‚Œã°ã‚°ãƒãƒ¼ãƒãƒ«ã‚¹ã‚³ãƒ¼ãƒ—ã®)空関数を定義ã™ã‚‹ã€ã¨ã„ã†ã¨ã“ã‚ã‚„ã£ãŸã€‚（上ã®ã‚³ãƒ¼ãƒ‰ã§ã„ã†ã¨Prototype.emptyF
Finally, the alternative fix for IE6's memory leak is available
Finally, the alternative fix for IE6's memory leak is available Update:6/9/2008 One of my fellows, Chris Heilmann helped to post this page to AJAXIAN.com and had got a lot of comments and feedbacks, which I really appreciate it. Before you start to read this page, I assume that you do have a IE6 browser available and test these cases your self like I always did. Of course, you should know memor
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» WebKit leaks data URIs Waldheinz
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