[iOS] Wait a few seconds before release network activity assertion after a load
https://bugs.webkit.org/show_bug.cgi?id=160975
<rdar://problem/27910964>
Reviewed by Darin Adler.
Some apps do several loads one after the other in a non-visible view.
This causes us to release the background assertion every time a load
completes and then take one again less than a second after. Every
time we release the assertion, we send a PrepareToSuspend IPC to the
WebContent process, which does all the clean up to get ready to
suspend, only to get a CancelPrepareReadyToSuspend later on because
the next load has started. To work around this problem, we now wait
a few seconds before releasing the background activity after a load.
* UIProcess/Cocoa/NavigationState.h:
* UIProcess/Cocoa/NavigationState.mm:
(WebKit::NavigationState::NavigationState):
(WebKit::NavigationState::releaseNetworkActivityToken):
(WebKit::NavigationState::didChangeIsLoading):
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@204716 268f45cc-cd09-0410-ab3c-d52691b4dbfc
3 files changed
