DevTools: Support asynchronous call stacks on backend.

Source/core/inspector/InspectorDebuggerAgent.cpp

 /*
  * Copyright (C) 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010-2011 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.
@@ skipping 430 matching lines @@
         return;
     }
 
     injectedScript.getStepInPositions(errorString, m_currentCallStack, callFrameId, positions);
 }
 
 void InspectorDebuggerAgent::getBacktrace(ErrorString* errorString, RefPtr<Array<CallFrame> >& callFrames, RefPtr<StackTrace>& asyncStackTrace)
 {
     if (!assertPaused(errorString))
         return;
-    scriptDebugServer().updateCallStack(&m_currentCallStack);
+    m_currentCallStack = scriptDebugServer().currentCallFrames();
     callFrames = currentCallFrames();
     asyncStackTrace = currentAsyncStackTrace();
 }
 
 String InspectorDebuggerAgent::scriptURL(JavaScriptCallFrame* frame)
 {
     String scriptIdString = String::number(frame->sourceID());
     ScriptsMap::iterator it = m_scripts.find(scriptIdString);
     if (it == m_scripts.end())
         return String();
@@ skipping 150 matching lines @@
         *errorString = "Attempt to access callframe when debugger is not on pause";
         return;
     }
     InjectedScript injectedScript = m_injectedScriptManager->injectedScriptForObjectId(callFrameId);
     if (injectedScript.hasNoValue()) {
         *errorString = "Inspected frame has gone";
         return;
     }
 
     injectedScript.restartFrame(errorString, m_currentCallStack, callFrameId, &result);
-    scriptDebugServer().updateCallStack(&m_currentCallStack);
+    m_currentCallStack = scriptDebugServer().currentCallFrames();
     newCallFrames = currentCallFrames();
     asyncStackTrace = currentAsyncStackTrace();
 }
 
 void InspectorDebuggerAgent::getScriptSource(ErrorString* error, const String& scriptId, String* scriptSource)
 {
     ScriptsMap::iterator it = m_scripts.find(scriptId);
     if (it != m_scripts.end())
         *scriptSource = it->value.source;
     else
@@ skipping 20 matching lines @@
 }
 
 void InspectorDebuggerAgent::cancelPauseOnNextStatement()
 {
     if (m_javaScriptPauseScheduled)
         return;
     clearBreakDetails();
     scriptDebugServer().setPauseOnNextStatement(false);
 }
 
+void InspectorDebuggerAgent::didInstallTimer(ExecutionContext*, int timerId, int timeout, bool singleShot)
+{
+    if (m_asyncCallStackTracker.isEnabled())
+        m_asyncCallStackTracker.didInstallTimer(timerId, singleShot, scriptDebugServer().currentCallFrames());
+}
+
+void InspectorDebuggerAgent::didRemoveTimer(ExecutionContext*, int timerId)
+{
+    m_asyncCallStackTracker.didRemoveTimer(timerId);
+}
+
+bool InspectorDebuggerAgent::willFireTimer(ExecutionContext*, int timerId)
+{
+    m_asyncCallStackTracker.willFireTimer(timerId);
+    return true;
+}
+
 void InspectorDebuggerAgent::didFireTimer()
 {
+    m_asyncCallStackTracker.didFireAsyncCall();
     cancelPauseOnNextStatement();
 }
 
+void InspectorDebuggerAgent::didRequestAnimationFrame(Document*, int callbackId)
+{
+    if (m_asyncCallStackTracker.isEnabled())
+        m_asyncCallStackTracker.didRequestAnimationFrame(callbackId, scriptDebugServer().currentCallFrames());
+}
+
+void InspectorDebuggerAgent::didCancelAnimationFrame(Document*, int callbackId)
+{
+    m_asyncCallStackTracker.didCancelAnimationFrame(callbackId);
+}
+
+bool InspectorDebuggerAgent::willFireAnimationFrame(Document*, int callbackId)
+{
+    m_asyncCallStackTracker.willFireAnimationFrame(callbackId);
+    return true;
+}
+
+void InspectorDebuggerAgent::didFireAnimationFrame()
+{
+    m_asyncCallStackTracker.didFireAsyncCall();
+}
+
 void InspectorDebuggerAgent::didHandleEvent()
 {
     cancelPauseOnNextStatement();
 }
 
 void InspectorDebuggerAgent::pause(ErrorString*)
 {
     if (m_javaScriptPauseScheduled)
         return;
     clearBreakDetails();
@@ skipping 204 matching lines @@
         compiled = compileSkipCallFramePattern(patternValue);
         if (!compiled) {
             *errorString = "Invalid regular expression";
             return;
         }
     }
     m_state->setString(DebuggerAgentState::skipStackPattern, patternValue);
     m_cachedSkipStackRegExp = compiled.release();
 }
 
+void InspectorDebuggerAgent::setAsyncCallStackDepth(ErrorString*, int depth)
+{
+    m_asyncCallStackTracker.setAsyncCallStackDepth(depth);
+}
+
 void InspectorDebuggerAgent::scriptExecutionBlockedByCSP(const String& directiveText)
 {
     if (scriptDebugServer().pauseOnExceptionsState() != ScriptDebugServer::DontPauseOnExceptions) {
         RefPtr<JSONObject> directive = JSONObject::create();
         directive->setString("directiveText", directiveText);
         breakProgram(InspectorFrontend::Debugger::Reason::CSPViolation, directive.release());
     }
 }
 
 PassRefPtr<Array<CallFrame> > InspectorDebuggerAgent::currentCallFrames()
 {
     if (!m_pausedScriptState)
         return Array<CallFrame>::create();
     InjectedScript injectedScript = m_injectedScriptManager->injectedScriptFor(m_pausedScriptState);
     if (injectedScript.hasNoValue()) {
         ASSERT_NOT_REACHED();
         return Array<CallFrame>::create();
     }
     return injectedScript.wrapCallFrames(m_currentCallStack);
 }
 
 PassRefPtr<StackTrace> InspectorDebuggerAgent::currentAsyncStackTrace()
 {
-    // FIXME: Implement async stack traces.
-    return 0;
+    if (!m_pausedScriptState || !m_asyncCallStackTracker.isEnabled())
+        return 0;
+    InjectedScript injectedScript = m_injectedScriptManager->injectedScriptFor(m_pausedScriptState);
+    if (injectedScript.hasNoValue()) {
+        ASSERT_NOT_REACHED();
+        return 0;
+    }
+    const AsyncCallStackTracker::AsyncCallChain* chain = m_asyncCallStackTracker.currentAsyncCallChain();
+    if (!chain)
+        return 0;
+    const AsyncCallStackTracker::AsyncCallStackVector& callStacks = chain->callStacks();
+    if (callStacks.isEmpty())
+        return 0;
+    RefPtr<StackTrace> result;
+    for (AsyncCallStackTracker::AsyncCallStackVector::const_reverse_iterator it = callStacks.rbegin(); it != callStacks.rend(); ++it) {
+        RefPtr<StackTrace> next = StackTrace::create()
+            .setCallFrames(injectedScript.wrapCallFrames((*it)->callFrames()))
+            .release();
+        if (result)
+            next->setAsyncStackTrace(result.release());
+        result.swap(next);
+    }
+    return result.release();
 }
 
 String InspectorDebuggerAgent::sourceMapURLForScript(const Script& script)
 {
     bool deprecated;
     String sourceMapURL = ContentSearchUtils::findSourceMapURL(script.source, ContentSearchUtils::JavaScriptMagicComment, &deprecated);
     if (!sourceMapURL.isEmpty()) {
         // FIXME: add deprecated console message here.
         return sourceMapURL;
     }
@@ skipping 64 matching lines @@
     ASSERT(scriptState && !m_pausedScriptState);
     m_pausedScriptState = scriptState;
     m_currentCallStack = callFrames;
 
     m_skipStepInCount = numberOfStepsBeforeStepOut;
 
     if (!exception.hasNoValue()) {
         InjectedScript injectedScript = m_injectedScriptManager->injectedScriptFor(scriptState);
         if (!injectedScript.hasNoValue()) {
             m_breakReason = InspectorFrontend::Debugger::Reason::Exception;
-            m_breakAuxData = injectedScript.wrapObject(exception, "backtrace")->openAccessors();
+            m_breakAuxData = injectedScript.wrapObject(exception, InspectorDebuggerAgent::backtraceObjectGroup)->openAccessors();
             // m_breakAuxData might be null after this.
         }
     }
 
     RefPtr<Array<String> > hitBreakpointIds = Array<String>::create();
 
     for (Vector<String>::const_iterator i = hitBreakpoints.begin(); i != hitBreakpoints.end(); ++i) {
         DebugServerBreakpointToBreakpointIdAndSourceMap::iterator breakpointIterator = m_serverBreakpoints.find(*i);
         if (breakpointIterator != m_serverBreakpoints.end()) {
             const String& localId = breakpointIterator->value.first;
@@ skipping 37 matching lines @@
     m_breakAuxData = data;
     scriptDebugServer().breakProgram();
 }
 
 void InspectorDebuggerAgent::clear()
 {
     m_pausedScriptState = 0;
     m_currentCallStack = ScriptValue();
     m_scripts.clear();
     m_breakpointIdToDebugServerBreakpointIds.clear();
+    m_asyncCallStackTracker.clear();
     m_continueToLocationBreakpointId = String();
     clearBreakDetails();
     m_javaScriptPauseScheduled = false;
     ErrorString error;
     setOverlayMessage(&error, 0);
 }
 
 bool InspectorDebuggerAgent::assertPaused(ErrorString* errorString)
 {
     if (!m_pausedScriptState) {
@@ skipping 18 matching lines @@
 
 void InspectorDebuggerAgent::removeBreakpoint(const String& scriptId, int lineNumber, int columnNumber, BreakpointSource source)
 {
     removeBreakpoint(generateBreakpointId(scriptId, lineNumber, columnNumber, source));
 }
 
 void InspectorDebuggerAgent::reset()
 {
     m_scripts.clear();
     m_breakpointIdToDebugServerBreakpointIds.clear();
+    m_asyncCallStackTracker.clear();
     if (m_frontend)
         m_frontend->globalObjectCleared();
 }
 
 } // namespace WebCore