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Commit 8cd793e6 authored by toyoshim's avatar toyoshim Committed by Commit bot
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FasterLocationReload: use ReloadMainResource for JS exposed reloads 

Now all reloads triggered by user interfaces are replaced by
ReloadMainResource, but Location.reload() and History.go() still call
the traditional Reload.

This patch changes them to call ReloadMainResource insteads under a
runtime flag. This flag will be wired to a field study flag later.

This is discussed at loading-dev@ in the following thread.
https://groups.google.com/a/chromium.org/d/topic/loading-dev/gD-MPRcfwVA/discussion

BUG=670237

Review-Url: https://codereview.chromium.org/2555963003
Cr-Commit-Position: refs/heads/master@{#438766}
parent 967340a9
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Showing with 114 additions and 10 deletions
third_party/WebKit/LayoutTests/http/tests/cache/location-reload.html 0 → 100644
View file @ 8cd793e6
<!DOCYUPE html>
<script src="../resources/testharness.js"></script>
<script src="../resources/testharnessreport.js"></script>
<script>
async_test(t => {
let testWindow = null;
let messageCount = 0;
// Test will run on testWindow that is opened below.
// This page just received messages to confirm if tests run expectedly.
const checkReady = e => {
t.step(() => {
// Will receive "READY" twice because of a reload, then receive "PASS".
assert_equals(e.data, "READY", "received message is " + e.data);
messageCount++;
if (messageCount == 2) {
window.removeEventListener("message", checkReady, false);
window.addEventListener("message", e => {
assert_equals(e.data, "PASS", "received message is " + e.data);
t.done();
}, { once: true });
}
// Send back "START" message for "READY".
assert_class_string(testWindow, "Window", "testWindow is invalid");
testWindow.postMessage("START", location.origin);
});
};
window.addEventListener("message", checkReady, false);
// Start a test in a dedicated window because we can not track navigations
// within a test harness.
t.step(() => {
testWindow = open("./resources/location-reload-window.html", "testWindow");
assert_class_string(testWindow, "Window", "window.open() failed");
});
}, "Test location.reload() cache behaviors");
</script>
third_party/WebKit/LayoutTests/http/tests/cache/resources/location-reload-window.html 0 → 100644
View file @ 8cd793e6
<!DOCTYPE html>
<html>
<body>
<h1>random</h1>
<script src="./random-cached.cgi"></script>
<script>
const lastRandomNumberKey = "lastRandomNumber";
window.addEventListener("message", e => {
if (e.data != "START") {
window.opener.postMessage("FAIL: unknown; " + e.data, location.origin);
} else {
// window.top.randomNumber should be set by random-cached.cgi.
if (window.top === undefined || window.top.randomNumber === undefined) {
window.opener.postMessage("FAIL: randomNumber isn't defined",
location.origin);
return;
}
// If location.reload() is already triggered, lastRandomNumberKey should be
// stored in the sessionStorage. Otherwise, this is the first load.
const lastRandomNumberString = sessionStorage.getItem(lastRandomNumberKey);
if (lastRandomNumberString !== null) {
// sessionStorage returns DOMString and need to be converted to Number.
const lastRandomNumber = Number(lastRandomNumberString);
// Because the random-cached.cgi is a sub-resource, and set HTTP headers
// to allow caching, location.reload() should follow the cache-protocol to
// reuse the cached resource. That is to say the randomNumber should not
// be changed on the reload.
window.opener.postMessage(lastRandomNumber == top.randomNumber
? "PASS"
: "FAIL: randomNumber was changed",
location.origin);
} else {
// Store the first randomNumber to the sessionStorage, and call reload().
// This window will send "READY" again, then receive "START".
sessionStorage.setItem(lastRandomNumberKey, top.randomNumber);
location.reload();
}
}
}, false);
// Send "READY" message first so that parent window can ensure to send messages.
window.opener.postMessage("READY", location.origin);
</script>
</body>
</html>
third_party/WebKit/Source/core/frame/History.cpp
View file @ 8cd793e6
......@@ -145,14 +145,19 @@ void History::go(ExecutionContext* context, int delta) {
if (!NavigationDisablerForUnload::isNavigationAllowed())
return;
// We intentionally call reload() for the current frame if delta is zero.
// Otherwise, navigation happens on the root frame.
// This behavior is designed in the following spec.
// https://html.spec.whatwg.org/multipage/browsers.html#dom-history-go
if (delta)
if (delta) {
frame()->loader().client()->navigateBackForward(delta);
else
frame()->reload(FrameLoadTypeReload, ClientRedirectPolicy::ClientRedirect);
} else {
// We intentionally call reload() for the current frame if delta is zero.
// Otherwise, navigation happens on the root frame.
// This behavior is designed in the following spec.
// https://html.spec.whatwg.org/multipage/browsers.html#dom-history-go
FrameLoadType reloadType =
RuntimeEnabledFeatures::fasterLocationReloadEnabled()
? FrameLoadTypeReloadMainResource
: FrameLoadTypeReload;
frame()->reload(reloadType, ClientRedirectPolicy::ClientRedirect);
}
}
KURL History::urlForState(const String& urlString) {
......
third_party/WebKit/Source/core/frame/LocalFrame.cpp
View file @ 8cd793e6
......@@ -377,7 +377,10 @@ void LocalFrame::reload(FrameLoadType loadType,
request.setClientRedirect(clientRedirectPolicy);
m_loader.load(request, loadType);
} else {
DCHECK_EQ(FrameLoadTypeReload, loadType);
if (RuntimeEnabledFeatures::fasterLocationReloadEnabled())
DCHECK_EQ(FrameLoadTypeReloadMainResource, loadType);
else
DCHECK_EQ(FrameLoadTypeReload, loadType);
m_navigationScheduler->scheduleReload();
}
}
......
third_party/WebKit/Source/core/frame/Location.cpp
View file @ 8cd793e6
......@@ -248,7 +248,11 @@ void Location::reload(LocalDOMWindow* currentWindow) {
return;
if (protocolIsJavaScript(toLocalFrame(m_frame)->document()->url()))
return;
m_frame->reload(FrameLoadTypeReload, ClientRedirectPolicy::ClientRedirect);
FrameLoadType reloadType =
RuntimeEnabledFeatures::fasterLocationReloadEnabled()
? FrameLoadTypeReloadMainResource
: FrameLoadTypeReload;
m_frame->reload(reloadType, ClientRedirectPolicy::ClientRedirect);
}
void Location::setLocation(const String& url,
......
third_party/WebKit/Source/core/loader/NavigationScheduler.cpp
View file @ 8cd793e6
......@@ -271,7 +271,10 @@ class ScheduledReload final : public ScheduledNavigation {
request.setClientRedirect(ClientRedirectPolicy::ClientRedirect);
maybeLogScheduledNavigationClobber(ScheduledNavigationType::ScheduledReload,
frame);
frame->loader().load(request, FrameLoadTypeReload);
if (RuntimeEnabledFeatures::fasterLocationReloadEnabled())
frame->loader().load(request, FrameLoadTypeReloadMainResource);
else
frame->loader().load(request, FrameLoadTypeReload);
}
private:
......
third_party/WebKit/Source/platform/RuntimeEnabledFeatures.in
View file @ 8cd793e6
......@@ -95,6 +95,7 @@ DocumentWriteEvaluator
DOMConvenienceAPI status=stable
DurableStorage status=stable
ExpensiveBackgroundTimerThrottling status=experimental
FasterLocationReload status=experimental
FontCacheScaling status=test
ForceDisplayList2dCanvas
// See crbug.com/585250.
......
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