forked from mirrors/gecko-dev
d9df20222c
DOM Storage is a pretty inefficient and memory-hungry storage mechanism. Session Store attempts to record DOM Storage for each tab, which leads to (possibly very large) objects being serialized once to be sent from frame/content to parent and once to be sent from the main thread to the I/O thread. This is a suspect behind a number of crashes (see bug 1106264 for a discussion on the topic). This patch limits the amount of DOM Storage that Session Restore attempts to store. We perform a quick estimate on the amount of memory needed to serialize DOM Storage and prevent storage larger than ~10M chars being sent from frame/content to the parent. Once this patch has landed, we will need to watch FX_SESSION_RESTORE_DOM_STORAGE_SIZE_ESTIMATE_CHARS to find out whether our threshold is meaningful. --HG-- extra : transplant_source : %26%07%ADzjT%A9%E3%B9%B9%EC%9D%97n%23%B5%F2%DAZ%CD
27 lines
846 B
HTML
27 lines
846 B
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<title>browser_sessionStorage.html</title>
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</head>
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<body>
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<script type="text/javascript;version=1.8">
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let isOuter = window == window.top;
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let args = window.location.search.slice(1).split("&");
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let rand = args[0];
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if (isOuter) {
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let iframe = document.createElement("iframe");
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let isSecure = args.indexOf("secure") > -1;
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let scheme = isSecure ? "https" : "http";
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iframe.setAttribute("src", scheme + "://example.com" + location.pathname + "?" + rand);
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document.body.appendChild(iframe);
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}
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if (sessionStorage.length === 0) {
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sessionStorage.test = (isOuter ? "outer" : "inner") + "-value-" + rand;
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document.title = sessionStorage.test;
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}
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</script>
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</body>
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</html>
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