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/*
* Copyright (C) 2014-2023 Apple 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 "JSGlobalObjectDebugger.h"
#include "JSGlobalObject.h"
#include "JSLock.h"
#include <wtf/RunLoop.h>
#include <wtf/TZoneMallocInlines.h>
namespace Inspector {
using namespace JSC;
WTF_MAKE_TZONE_ALLOCATED_IMPL(JSGlobalObjectDebugger);
JSGlobalObjectDebugger::JSGlobalObjectDebugger(JSGlobalObject& globalObject)
: Debugger(globalObject.vm())
, m_globalObject(globalObject)
{
}
void JSGlobalObjectDebugger::attachDebugger()
{
JSC::Debugger::attachDebugger();
attach(&m_globalObject);
}
void JSGlobalObjectDebugger::detachDebugger(bool isBeingDestroyed)
{
JSC::Debugger::detachDebugger(isBeingDestroyed);
detach(&m_globalObject, isBeingDestroyed ? Debugger::GlobalObjectIsDestructing : Debugger::TerminatingDebuggingSession);
if (!isBeingDestroyed)
recompileAllJSFunctions();
}
void JSGlobalObjectDebugger::runEventLoopWhilePaused()
{
JSC::Debugger::runEventLoopWhilePaused();
// Drop all locks so another thread can work in the VM while we are nested.
JSC::JSLock::DropAllLocks dropAllLocks(&m_globalObject.vm());
while (!m_doneProcessingDebuggerEvents) {
if (RunLoop::cycle(JSGlobalObjectDebugger::runLoopMode()) == RunLoop::CycleResult::Stop)
break;
}
}
RunLoopMode JSGlobalObjectDebugger::runLoopMode()
{
#if USE(CF) && !PLATFORM(WATCHOS)
// Run the RunLoop in a custom run loop mode to prevent default observers
// to run and potentially evaluate JavaScript in this context while we are
// nested. Only the debugger should control things until we continue.
// FIXME: This is not a perfect solution, as background threads are not
// paused and can still access and evalute script in the JSContext.
// FIXME: <rdar://problem/25972777>. On watchOS, in order for auto-attach to work,
// we need to run in the default run loop mode otherwise we do not receive the XPC messages
// necessary to setup the relay connection and negotiate an auto-attach debugger.
return CFSTR("com.apple.JavaScriptCore.remote-inspector-runloop-mode");
#else
return DefaultRunLoopMode;
#endif
}
} // namespace Inspector
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