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Bug 1647433 - Fix use of GetTopLevelContentDocument in HangMonitorChild::InterruptCallback, r=peterv

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No need to access top level doc. Disabling bfcaching on any subframe prevents bfcaching of the top level page.

(There may be other issues around stopping slow scripts in Fission.)

Differential Revision: https://phabricator.services.mozilla.com/D109400
This commit is contained in:
Olli Pettay 2021-03-26 19:13:22 +00:00
parent 6a26ece73c
commit d1b5dfa384
1 changed files with 1 additions and 3 deletions
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4
dom/ipc/ProcessHangMonitor.cpp
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@ -449,9 +449,7 @@ bool HangMonitorChild::InterruptCallback() {
if (NS_SUCCEEDED(rv) && canCancel) {
// Don't add this page to the BF cache, since we're cancelling its JS.
if (Document* doc = win->GetExtantDoc()) {
if (Document* topLevelDoc = doc->GetTopLevelContentDocument()) {
topLevelDoc->DisallowBFCaching();
}
doc->DisallowBFCaching();
}
return false;