145291 2015-05-21 20:06:49 -0700 Networking process sometimes suspended while WebContent runnable 2015-05-23 04:56:34 -0700 1 1 1 Unclassified WebKit WebKit2 528+ (Nightly build) Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 barraclough barraclough ddkilzer oldest_to_newest 1096763 0 barraclough 2015-05-21 20:06:49 -0700 There is an asymetry is how the Networking process suspension is managed. We drop the assertion (& suspend the process) whenever the WebProcess says it is ready to suspend, but we only take the assertion (& resume execution) when the WebContent process is actually resumed. This leaves a race – where the WebContent process was willing to be suspended, but the UI app cahnged its mind suspending it. Since the WebContent process never actually suspended (we only prepared it to), we never send a resume, and since we never resume, we never wake the Networking process. 1096764 1 253574 barraclough 2015-05-21 20:14:31 -0700 Created attachment 253574 Fix 1096776 2 253574 kling 2015-05-21 21:15:34 -0700 Comment on attachment 253574 Fix View in context: https://bugs.webkit.org/attachment.cgi?id=253574&action=review r=me > Source/WebKit2/ChangeLog:9 > + There is an asymetry is how the Networking process suspension is managed. asymmetry is -> asymmetry in > Source/WebKit2/ChangeLog:13 > + the WebContent process was willing to be suspended, but the UI app cahnged cahnged -> changed > Source/WebKit2/UIProcess/WebProcessProxy.cpp:918 > +void WebProcessProxy::didSetAssertionState(AssertionState state) I feel like some build will break because "state" is unused unless PLATFORM(IOS) && ENABLE(NETWORK_PROCESS). 1096883 3 barraclough 2015-05-22 10:19:56 -0700 Committed revision 184774. 1097087 4 ddkilzer 2015-05-23 04:56:34 -0700 <rdar://problem/21033029> 253574 2015-05-21 20:14:31 -0700 2015-05-21 21:15:34 -0700 Fix 145291.1.patch text/plain 10144 barraclough SW5kZXg6IFNvdXJjZS9XZWJLaXQyL0NoYW5nZUxvZwo9PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09Ci0tLSBTb3VyY2UvV2Vi S2l0Mi9DaGFuZ2VMb2cJKHJldmlzaW9uIDE4NDc0OCkKKysrIFNvdXJjZS9XZWJLaXQyL0NoYW5n ZUxvZwkod29ya2luZyBjb3B5KQpAQCAtMSwzICsxLDUyIEBACisyMDE1LTA1LTIxICBHYXZpbiBC YXJyYWNsb3VnaCAgPGJhcnJhY2xvdWdoQGFwcGxlLmNvbT4KKworICAgICAgICBOZXR3b3JraW5n IHByb2Nlc3Mgc29tZXRpbWVzIHN1c3BlbmRlZCB3aGlsZSBXZWJDb250ZW50IHJ1bm5hYmxlCisg ICAgICAgIGh0dHBzOi8vYnVncy53ZWJraXQub3JnL3Nob3dfYnVnLmNnaT9pZD0xNDUyOTEKKyAg ICAgICAgPHJkYXI6Ly9wcm9ibGVtLzIxMDMzMDI5PgorCisgICAgICAgIFJldmlld2VkIGJ5IE5P Qk9EWSAoT09QUyEpLgorCisgICAgICAgIFRoZXJlIGlzIGFuIGFzeW1ldHJ5IGlzIGhvdyB0aGUg TmV0d29ya2luZyBwcm9jZXNzIHN1c3BlbnNpb24gaXMgbWFuYWdlZC4KKyAgICAgICAgV2UgZHJv 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