I have DocumentLoadListener working for the file:/// URL case, but I'm
running into the following problem with the LoadFromStream case.
The problem is that nsLoadGroup.mForegroundCount never goes to zero in
the Stream case. I've illustrated the incrementing and decrementing
of
mForegroundCount in the file:/// URL case (case 1) and the
LoadFromStream case (case 2). Can anyone give any clues about this?
Case 1: Load a file:/// URL
mForegroundCount == 0
mForegroundCount += 1 when
nsLoadGroup::AddRequest() line 607
nsFileChannel::AsyncOpen() line 506
nsDocumentOpenInfo::Open() line 221 + 18 bytes
nsURILoader::OpenURI() line 791 + 19 bytes
nsDocShell::DoChannelLoad() line 5662 + 39 bytes
nsDocShell::DoURILoad() line 5435 + 38 bytes
nsDocShell::InternalLoad() line 5225 + 55 bytes
nsDocShell::LoadURI() line 734 + 82 bytes
nsDocShell::LoadURI() line 2478 + 38 bytes
nsWebBrowser::LoadURI() line 668
Java_org_mozilla_webclient_impl_wrapper_1native_NavigationImpl_nativeLoadURL()
line 81 + 38 bytes
mForegroundCount == 1
mForegroundCount += 1 when
nsLoadGroup::AddRequest() line 607
HTMLContentSink::AddDummyParserRequest() line 4718 + 40 bytes
HTMLContentSink::WillBuildModel() line 2300 + 11 bytes
CNavDTD::WillBuildModel() line 398 + 12 bytes
nsParser::WillBuildModel() line 1227 + 62 bytes
nsParser::ResumeParse() line 1732 + 23 bytes
nsParser::OnDataAvailable() line 2426 + 21 bytes
nsDocumentOpenInfo::OnDataAvailable() line 308 + 46 bytes
nsFileChannel::OnDataAvailable() line 595
nsInputStreamPump::OnStateTransfer() line 433 + 65 bytes
nsInputStreamPump::OnInputStreamReady() line 336 + 11 bytes
nsInputStreamReadyEvent::EventHandler() line 117
PL_HandleEvent() line 671 + 10 bytes
PL_ProcessPendingEvents() line 606 + 9 bytes
_md_TimerProc() line 977 + 9 bytes
USER32! 77e11ef0()
USER32! 77e120d5()
USER32! 77e15f69()
Java_org_mozilla_webclient_impl_wrapper_1native_NativeEventThread_nativeProcessEvents()
line 133
mForegroundCount == 2
mForegroundCount += 1 when
nsLoadGroup::AddRequest() line 607
PresShell::AddDummyLayoutRequest() line 6704 + 40 bytes
PresShell::ReflowCommandAdded() line 6659
PresShell::AppendReflowCommand() line 3770
nsFrame::CreateAndPostReflowCommand() line 4590
nsBlockFrame::ReflowDirtyChild() line 5830 + 21 bytes
nsBlockFrame::AppendFrames() line 4506
FrameManager::AppendFrames() line 935
nsCSSFrameConstructor::AppendFrames() line 7565 + 22 bytes
nsCSSFrameConstructor::ContentAppended() line 8393
StyleSetImpl::ContentAppended() line 1629
PresShell::ContentAppended() line 5316 + 36 bytes
nsDocument::ContentAppended() line 1863
nsHTMLDocument::ContentAppended() line 1365
HTMLContentSink::NotifyAppend() line 4240
SinkContext::FlushTags() line 1870
SinkContext::DidAddContent() line 1257
SinkContext::FlushText() line 1966
SinkContext::FlushTags() line 1817
HTMLContentSink::WillInterrupt() line 2506 + 16 bytes
CNavDTD::WillInterruptParse() line 3929 + 18 bytes
nsParser::ResumeParse() line 1852
nsParser::OnDataAvailable() line 2426 + 21 bytes
nsDocumentOpenInfo::OnDataAvailable() line 308 + 46 bytes
nsFileChannel::OnDataAvailable() line 595
nsInputStreamPump::OnStateTransfer() line 433 + 65 bytes
nsInputStreamPump::OnInputStreamReady() line 336 + 11 bytes
nsInputStreamReadyEvent::EventHandler() line 117
PL_HandleEvent() line 671 + 10 bytes
PL_ProcessPendingEvents() line 606 + 9 bytes
_md_TimerProc() line 977 + 9 bytes
USER32! 77e11ef0()
USER32! 77e120d5()
USER32! 77e15f69()
Java_org_mozilla_webclient_impl_wrapper_1native_NativeEventThread_nativeProcessEvents()
line 133
mForegroundCount == 3
mForegroundCount -= 1 when
nsLoadGroup::RemoveRequest() line 687
HTMLContentSink::RemoveDummyParserRequest() line 4735 + 42 bytes
HTMLContentSink::DidBuildModel() line 2440
CNavDTD::DidBuildModel() line 705
nsParser::DidBuildModel() line 1245 + 46 bytes
nsParser::ResumeParse() line 1820
nsParser::OnStopRequest() line 2472 + 21 bytes
nsDocumentOpenInfo::OnStopRequest() line 326
nsFileChannel::OnStopRequest() line 578
nsInputStreamPump::OnStateStop() line 499
nsInputStreamPump::OnInputStreamReady() line 339 + 11 bytes
nsInputStreamReadyEvent::EventHandler() line 117
PL_HandleEvent() line 671 + 10 bytes
PL_ProcessPendingEvents() line 606 + 9 bytes
_md_TimerProc() line 977 + 9 bytes
USER32! 77e11ef0()
USER32! 77e120d5()
USER32! 77e15f69()
Java_org_mozilla_webclient_impl_wrapper_1native_NativeEventThread_nativeProcessEvents()
line 133
mForegroundCount == 2
mForegroundCount -= 1 when
nsLoadGroup::RemoveRequest() line 687
nsFileChannel::OnStopRequest() line 584
nsInputStreamPump::OnStateStop() line 499
nsInputStreamPump::OnInputStreamReady() line 339 + 11 bytes
nsInputStreamReadyEvent::EventHandler() line 117
PL_HandleEvent() line 671 + 10 bytes
PL_ProcessPendingEvents() line 606 + 9 bytes
_md_TimerProc() line 977 + 9 bytes
USER32! 77e11ef0()
USER32! 77e120d5()
USER32! 77e15f69()
Java_org_mozilla_webclient_impl_wrapper_1native_NativeEventThread_nativeProcessEvents()
line 133
mForegroundCount == 1
mForegroundCount -= 1 when
nsLoadGroup::RemoveRequest() line 687
PresShell::RemoveDummyLayoutRequest() line 6725 + 42 bytes
PresShell::DoneRemovingReflowCommands() line 6686
PresShell::ProcessReflowCommands() line 6546
ReflowEvent::HandleEvent() line 6321
HandlePLEvent() line 6335
PL_HandleEvent() line 671 + 10 bytes
PL_ProcessPendingEvents() line 606 + 9 bytes
_md_EventReceiverProc() line 1412 + 9 bytes
USER32! 77e11ef0()
USER32! 77e120d5()
USER32! 77e15f69()
Java_org_mozilla_webclient_impl_wrapper_1native_NativeEventThread_nativeProcessEvents()
line 133
NOW mForegroundCount == 0. This ultimately causes the
END_DOCUMENT_LOAD event to be sent to my nsIWebProgressListener.
Case 2: nsDocShell->LoadStream()
mForegroundCount == 0
mForegroundCount += 1 when
nsLoadGroup::AddRequest() line 607
nsDocShell::CreateContentViewer() line 4527
nsDSURIContentListener::DoContent() line 109 + 33 bytes
nsDocumentOpenInfo::TryContentListener() line 673 + 70 bytes
nsDocumentOpenInfo::DispatchContent() line 413 + 57 bytes
nsDocumentOpenInfo::OnStartRequest() line 287 + 16 bytes
nsInputStreamChannel::OnStartRequest() line 356
nsInputStreamPump::OnStateStart() line 377 + 42 bytes
nsInputStreamPump::OnInputStreamReady() line 333 + 11 bytes
nsInputStreamReadyEvent::EventHandler() line 117
PL_HandleEvent() line 671 + 10 bytes
NativeWrapperFactory::ProcessEventLoop() line 205 + 9 bytes
Java_org_mozilla_webclient_impl_wrapper_1native_NativeEventThread_nativeProcessEvent()
line 133
mForegroundCount == 1
mForegroundCount += 1 when
nsLoadGroup::AddRequest() line 607
HTMLContentSink::AddDummyParserRequest() line 4718 + 40 bytes
HTMLContentSink::WillBuildModel() line 2300 + 11 bytes
CNavDTD::WillBuildModel() line 398 + 12 bytes
nsParser::WillBuildModel() line 1227 + 62 bytes
nsParser::ResumeParse() line 1732 + 23 bytes
nsParser::OnDataAvailable() line 2426 + 21 bytes
nsDocumentOpenInfo::OnDataAvailable() line 308 + 46 bytes
nsInputStreamChannel::OnDataAvailable() line 383 + 57 bytes
nsInputStreamPump::OnStateTransfer() line 433 + 65 bytes
nsInputStreamPump::OnInputStreamReady() line 336 + 11 bytes
nsInputStreamReadyEvent::EventHandler() line 117
PL_HandleEvent() line 671 + 10 bytes
NativeWrapperFactory::ProcessEventLoop() line 205 + 9 bytes
Java_org_mozilla_webclient_impl_wrapper_1native_NativeEventThread_nativeProcessEvents()
line 133
NOW, we go into an infinite loop of adding the dummy request then
removing it.
mForegroundCount == 2
mForegroundCount += 1 when
nsLoadGroup::AddRequest() line 607
PresShell::AddDummyLayoutRequest() line 6704 + 40 bytes
PresShell::ReflowCommandAdded() line 6659
PresShell::AppendReflowCommand() line 3770
nsFrame::CreateAndPostReflowCommand() line 4590
nsBlockFrame::ReflowDirtyChild() line 5830 + 21 bytes
nsBlockFrame::AppendFrames() line 4506
FrameManager::AppendFrames() line 935
nsCSSFrameConstructor::AppendFrames() line 7565 + 22 bytes
nsCSSFrameConstructor::ContentAppended() line 8393
StyleSetImpl::ContentAppended() line 1629
PresShell::ContentAppended() line 5316 + 36 bytes
nsDocument::ContentAppended() line 1863
nsHTMLDocument::ContentAppended() line 1365
HTMLContentSink::NotifyAppend() line 4240
SinkContext::FlushTags() line 1870
SinkContext::DidAddContent() line 1257
SinkContext::FlushText() line 1966
SinkContext::FlushTags() line 1817
HTMLContentSink::Notify() line 2475
nsTimerImpl::Fire() line 386
handleTimerEvent() line 449
PL_HandleEvent() line 671 + 10 bytes
PL_ProcessPendingEvents() line 606 + 9 bytes
_md_TimerProc() line 977 + 9 bytes
USER32! 77e11ef0()
USER32! 77e120d5()
USER32! 77e15f69()
Java_org_mozilla_webclient_impl_wrapper_1native_NativeEventThread_nativeProcessEvents()
line 133
mForegroundCount == 3
mForegroundCount -= 1 when
nsLoadGroup::RemoveRequest() line 687
PresShell::RemoveDummyLayoutRequest() line 6725 + 42 bytes
PresShell::DoneRemovingReflowCommands() line 6686
PresShell::ProcessReflowCommands() line 6546
ReflowEvent::HandleEvent() line 6321
HandlePLEvent() line 6335
PL_HandleEvent() line 671 + 10 bytes
PL_ProcessPendingEvents() line 606 + 9 bytes
_md_EventReceiverProc() line 1412 + 9 bytes
USER32! 77e11ef0()
USER32! 77e1204c()
USER32! 77e15f69()
Java_org_mozilla_webclient_impl_wrapper_1native_NativeEventThread_nativeProcessEvents()
line 133
Also, the
nsLoadGroup::RemoveRequest() line 687
nsFileChannel::OnStopRequest() line 584
nsInputStreamPump::OnStateStop() line 499
nsInputStreamPump::OnInputStreamReady() line 339 + 11 bytes
scenario never happens for the LoadFromStream case, even though the
nsIInputStream does indeed close.
Thanks,
Ed
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