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<head>
    <title>GC Heap Inspector</title>
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    </style>

    <script src="script/interface.js"></script>
    <script src="heap-analysis/HeapSnapshot.js"></script>
</head>
<body>
    <header>
    <div id="dropTarget">Drop GC heap JSON file here to load.</div>
    </header>

    <section id="description">
        <h1>GC heap debugger</h2>
        <p>This page is for analyzing JSON dumps of the GC heap. To debug an issue that you think might be a leaked or abandoned object (often a Document or JSGlobalObject), load the test page, then navigate to about:blank or other simple page. Now simulate a memory warning (to clear the page cache) by issuing the following command in a Terminal window:
        <code>notifyutil -p org.WebKit.lowMemory</code>
        
        You can now inspect the list of live documents via:
        <code>notifyutil -p com.apple.WebKit.showAllDocuments</code>
        
        which prints its output to the system log. If this lists documents other than the current page, you may have a leaked or abandoned Document. To see if the GC heap is referencing that Document, obtain a GC heap dump:
        <code>notifyutil -p com.apple.WebKit.dumpGCHeap</code>
        
        That command will generate a JSON file in /tmp (or equivalent); the file path is dumped to the system log. Drag that file onto the drop target in the top right (or use the ?filename= URL parameter).
        </p>
        <p>
        For more information, see the wiki page on <a href="https://trac.webkit.org/wiki/Inspecting%20the%20GC%20heap">Inspecting the GC heap</a>.
        </p>
    </section>

    <section id="uiContainer">

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        <h1>All paths to…</h1>
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        <h1>Objects</h1>
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        </section>

        <h1>Roots</h1>
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        </section>
    </section>
    
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