/* * Copyright (C) 2014-2019 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 "JSGlobalObjectScriptDebugServer.h" #include "JSGlobalObject.h" #include "JSLock.h" #include <wtf/RunLoop.h> namespace Inspector { using namespace JSC; JSGlobalObjectScriptDebugServer::JSGlobalObjectScriptDebugServer(JSGlobalObject& globalObject) : ScriptDebugServer(globalObject.vm()) , m_globalObject(globalObject) { } void JSGlobalObjectScriptDebugServer::attachDebugger() { attach(&m_globalObject); } void JSGlobalObjectScriptDebugServer::detachDebugger(bool isBeingDestroyed) { detach(&m_globalObject, isBeingDestroyed ? Debugger::GlobalObjectIsDestructing : Debugger::TerminatingDebuggingSession); if (!isBeingDestroyed) recompileAllJSFunctions(); } void JSGlobalObjectScriptDebugServer::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(JSGlobalObjectScriptDebugServer::runLoopMode()) == RunLoop::CycleResult::Stop) break; } } RunLoopMode JSGlobalObjectScriptDebugServer::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