blob: 67037b0dc0d941ec7150e69cccce28d008be9734 [file] [log] [blame]
/*
* Copyright (C) 2013-2014 Apple Inc. All rights reserved.
* Copyright (c) 2011 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "PageDebugger.h"
#include "CommonVM.h"
#include "Document.h"
#include "Frame.h"
#include "FrameView.h"
#include "InspectorController.h"
#include "InspectorFrontendClient.h"
#include "JSDOMExceptionHandling.h"
#include "JSDOMWindowCustom.h"
#include "Page.h"
#include "PageGroup.h"
#include "ScriptController.h"
#include "Timer.h"
#include <JavaScriptCore/JSLock.h>
#include <wtf/MainThread.h>
#include <wtf/StdLibExtras.h>
#if PLATFORM(IOS_FAMILY)
#include "WebCoreThreadInternal.h"
#endif
namespace WebCore {
using namespace JSC;
using namespace Inspector;
PageDebugger::PageDebugger(Page& page)
: Debugger(WebCore::commonVM())
, m_page(page)
{
}
void PageDebugger::attachDebugger()
{
JSC::Debugger::attachDebugger();
m_page.setDebugger(this);
}
void PageDebugger::detachDebugger(bool isBeingDestroyed)
{
JSC::Debugger::detachDebugger(isBeingDestroyed);
m_page.setDebugger(nullptr);
if (!isBeingDestroyed)
recompileAllJSFunctions();
}
void PageDebugger::recompileAllJSFunctions()
{
JSLockHolder lock(vm());
Debugger::recompileAllJSFunctions();
}
void PageDebugger::didPause(JSGlobalObject* globalObject)
{
JSC::Debugger::didPause(globalObject);
setJavaScriptPaused(m_page.group(), true);
}
void PageDebugger::didContinue(JSGlobalObject* globalObject)
{
JSC::Debugger::didContinue(globalObject);
setJavaScriptPaused(m_page.group(), false);
}
void PageDebugger::runEventLoopWhilePaused()
{
JSC::Debugger::runEventLoopWhilePaused();
#if PLATFORM(IOS_FAMILY)
// On iOS, running an EventLoop causes us to run a nested WebRunLoop.
// Since the WebThread is autoreleased at the end of run loop iterations
// we need to gracefully handle releasing and reacquiring the lock.
if (WebThreadIsEnabled()) {
ASSERT(WebThreadIsLockedOrDisabled());
JSC::JSLock::DropAllLocks dropAllLocks(vm());
WebRunLoopEnableNested();
runEventLoopWhilePausedInternal();
WebRunLoopDisableNested();
ASSERT(WebThreadIsLockedOrDisabled());
return;
}
#endif
runEventLoopWhilePausedInternal();
}
void PageDebugger::runEventLoopWhilePausedInternal()
{
TimerBase::fireTimersInNestedEventLoop();
m_page.incrementNestedRunLoopCount();
while (!doneProcessingDebuggerEvents()) {
if (!platformShouldContinueRunningEventLoopWhilePaused())
break;
}
m_page.decrementNestedRunLoopCount();
}
bool PageDebugger::isContentScript(JSGlobalObject* state) const
{
return &currentWorld(*state) != &mainThreadNormalWorld() || JSC::Debugger::isContentScript(state);
}
void PageDebugger::reportException(JSGlobalObject* state, JSC::Exception* exception) const
{
JSC::Debugger::reportException(state, exception);
WebCore::reportException(state, exception);
}
void PageDebugger::setJavaScriptPaused(const PageGroup& pageGroup, bool paused)
{
for (auto& page : pageGroup.pages()) {
for (auto* frame = &page.mainFrame(); frame; frame = frame->tree().traverseNext())
setJavaScriptPaused(*frame, paused);
if (auto* frontendClient = page.inspectorController().inspectorFrontendClient()) {
if (paused)
frontendClient->pagePaused();
else
frontendClient->pageUnpaused();
}
}
}
void PageDebugger::setJavaScriptPaused(Frame& frame, bool paused)
{
if (!frame.script().canExecuteScripts(NotAboutToExecuteScript))
return;
frame.script().setPaused(paused);
ASSERT(frame.document());
auto& document = *frame.document();
if (paused) {
document.suspendScriptedAnimationControllerCallbacks();
document.suspendActiveDOMObjects(ReasonForSuspension::JavaScriptDebuggerPaused);
} else {
document.resumeActiveDOMObjects(ReasonForSuspension::JavaScriptDebuggerPaused);
document.resumeScriptedAnimationControllerCallbacks();
}
}
#if !PLATFORM(MAC)
bool PageDebugger::platformShouldContinueRunningEventLoopWhilePaused()
{
return RunLoop::cycle() != RunLoop::CycleResult::Stop;
}
#endif // !PLATFORM(MAC)
} // namespace WebCore