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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/177585">177585</a></dd>
<dt>Author</dt> <dd>commit-queue@webkit.org</dd>
<dt>Date</dt> <dd>2014-12-19 11:37:19 -0800 (Fri, 19 Dec 2014)</dd>
</dl>

<h3>Log Message</h3>
<pre>Web Inspector: CRASH inspector-protocol/debugger/breakpoint-action-detach.html
https://bugs.webkit.org/show_bug.cgi?id=139797

Patch by Joseph Pecoraro &lt;pecoraro@apple.com&gt; on 2014-12-19
Reviewed by Mark Lam.

Source/JavaScriptCore:

* debugger/Debugger.h:
* debugger/Debugger.cpp:
(JSC::Debugger::isAttached):
Check if we are the debugger for a particular global object.
(JSC::Debugger::pauseIfNeeded):
Pass the global object on when hitting a brekapoint.

* inspector/ScriptDebugServer.h:
* inspector/ScriptDebugServer.cpp:
(Inspector::ScriptDebugServer::handleBreakpointHit):
Stop evaluting breakpoint actions if a previous action caused the
debugger to detach from this global object.
(Inspector::ScriptDebugServer::handlePause):
Standardize on passing JSGlobalObject parameter first.

Source/WebKit/mac:

* WebView/WebScriptDebugger.h:
* WebView/WebScriptDebugger.mm:
(WebScriptDebugger::handlePause):
Standardize on passing JSGlobalObject parameter first.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceJavaScriptCoreChangeLog">trunk/Source/JavaScriptCore/ChangeLog</a></li>
<li><a href="#trunkSourceJavaScriptCoredebuggerDebuggercpp">trunk/Source/JavaScriptCore/debugger/Debugger.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCoredebuggerDebuggerh">trunk/Source/JavaScriptCore/debugger/Debugger.h</a></li>
<li><a href="#trunkSourceJavaScriptCoreinspectorScriptDebugServercpp">trunk/Source/JavaScriptCore/inspector/ScriptDebugServer.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCoreinspectorScriptDebugServerh">trunk/Source/JavaScriptCore/inspector/ScriptDebugServer.h</a></li>
<li><a href="#trunkSourceWebKitmacChangeLog">trunk/Source/WebKit/mac/ChangeLog</a></li>
<li><a href="#trunkSourceWebKitmacWebViewWebScriptDebuggerh">trunk/Source/WebKit/mac/WebView/WebScriptDebugger.h</a></li>
<li><a href="#trunkSourceWebKitmacWebViewWebScriptDebuggermm">trunk/Source/WebKit/mac/WebView/WebScriptDebugger.mm</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceJavaScriptCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/ChangeLog (177584 => 177585)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/ChangeLog        2014-12-19 19:34:19 UTC (rev 177584)
+++ trunk/Source/JavaScriptCore/ChangeLog        2014-12-19 19:37:19 UTC (rev 177585)
</span><span class="lines">@@ -1,3 +1,25 @@
</span><ins>+2014-12-19  Joseph Pecoraro  &lt;pecoraro@apple.com&gt;
+
+        Web Inspector: CRASH inspector-protocol/debugger/breakpoint-action-detach.html
+        https://bugs.webkit.org/show_bug.cgi?id=139797
+
+        Reviewed by Mark Lam.
+
+        * debugger/Debugger.h:
+        * debugger/Debugger.cpp:
+        (JSC::Debugger::isAttached):
+        Check if we are the debugger for a particular global object.
+        (JSC::Debugger::pauseIfNeeded):
+        Pass the global object on when hitting a brekapoint.
+
+        * inspector/ScriptDebugServer.h:
+        * inspector/ScriptDebugServer.cpp:
+        (Inspector::ScriptDebugServer::handleBreakpointHit):
+        Stop evaluting breakpoint actions if a previous action caused the
+        debugger to detach from this global object.
+        (Inspector::ScriptDebugServer::handlePause):
+        Standardize on passing JSGlobalObject parameter first.
+
</ins><span class="cx"> 2014-12-19  Mark Lam  &lt;mark.lam@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         [Win] Endless compiler warnings created by DFGEdge.h.
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoredebuggerDebuggercpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/debugger/Debugger.cpp (177584 => 177585)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/debugger/Debugger.cpp        2014-12-19 19:34:19 UTC (rev 177584)
+++ trunk/Source/JavaScriptCore/debugger/Debugger.cpp        2014-12-19 19:37:19 UTC (rev 177585)
</span><span class="lines">@@ -206,6 +206,11 @@
</span><span class="cx">         m_vm = nullptr;
</span><span class="cx"> }
</span><span class="cx"> 
</span><ins>+bool Debugger::isAttached(JSGlobalObject* globalObject)
+{
+    return globalObject-&gt;debugger() == this;
+}
+
</ins><span class="cx"> class Debugger::SetSteppingModeFunctor {
</span><span class="cx"> public:
</span><span class="cx">     SetSteppingModeFunctor(Debugger* debugger, SteppingMode mode)
</span><span class="lines">@@ -660,14 +665,14 @@
</span><span class="cx">     m_pauseOnNextStatement = false;
</span><span class="cx"> 
</span><span class="cx">     if (didHitBreakpoint) {
</span><del>-        handleBreakpointHit(breakpoint);
</del><ins>+        handleBreakpointHit(vmEntryGlobalObject, breakpoint);
</ins><span class="cx">         // Note that the actions can potentially stop the debugger, so we need to check that
</span><span class="cx">         // we still have a current call frame when we get back.
</span><span class="cx">         if (breakpoint.autoContinue || !m_currentCallFrame)
</span><span class="cx">             return;
</span><span class="cx">     }
</span><span class="cx"> 
</span><del>-    handlePause(m_reasonForPause, vmEntryGlobalObject);
</del><ins>+    handlePause(vmEntryGlobalObject, m_reasonForPause);
</ins><span class="cx"> 
</span><span class="cx">     if (!m_pauseOnNextStatement &amp;&amp; !m_pauseOnCallFrame) {
</span><span class="cx">         setSteppingMode(SteppingModeDisabled);
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoredebuggerDebuggerh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/debugger/Debugger.h (177584 => 177585)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/debugger/Debugger.h        2014-12-19 19:34:19 UTC (rev 177584)
+++ trunk/Source/JavaScriptCore/debugger/Debugger.h        2014-12-19 19:37:19 UTC (rev 177585)
</span><span class="lines">@@ -60,12 +60,13 @@
</span><span class="cx"> 
</span><span class="cx">     bool needsExceptionCallbacks() const { return m_pauseOnExceptionsState != DontPauseOnExceptions; }
</span><span class="cx"> 
</span><del>-    void attach(JSGlobalObject*);
</del><span class="cx">     enum ReasonForDetach {
</span><span class="cx">         TerminatingDebuggingSession,
</span><span class="cx">         GlobalObjectIsDestructing
</span><span class="cx">     };
</span><del>-    virtual void detach(JSGlobalObject*, ReasonForDetach);
</del><ins>+    void attach(JSGlobalObject*);
+    void detach(JSGlobalObject*, ReasonForDetach);
+    bool isAttached(JSGlobalObject*);
</ins><span class="cx"> 
</span><span class="cx">     BreakpointID setBreakpoint(Breakpoint, unsigned&amp; actualLine, unsigned&amp; actualColumn);
</span><span class="cx">     void removeBreakpoint(BreakpointID);
</span><span class="lines">@@ -89,7 +90,7 @@
</span><span class="cx">     void stepOverStatement();
</span><span class="cx">     void stepOutOfFunction();
</span><span class="cx"> 
</span><del>-    bool isPaused() { return m_isPaused; }
</del><ins>+    bool isPaused() const { return m_isPaused; }
</ins><span class="cx">     bool isStepping() const { return m_steppingMode == SteppingModeEnabled; }
</span><span class="cx"> 
</span><span class="cx">     virtual void sourceParsed(ExecState*, SourceProvider*, int errorLineNumber, const WTF::String&amp; errorMessage) = 0;
</span><span class="lines">@@ -108,7 +109,7 @@
</span><span class="cx"> 
</span><span class="cx"> protected:
</span><span class="cx">     virtual bool needPauseHandling(JSGlobalObject*) { return false; }
</span><del>-    virtual void handleBreakpointHit(const Breakpoint&amp;) { }
</del><ins>+    virtual void handleBreakpointHit(JSGlobalObject*, const Breakpoint&amp;) { }
</ins><span class="cx">     virtual void handleExceptionInBreakpointCondition(ExecState*, JSValue exception) const { UNUSED_PARAM(exception); }
</span><span class="cx"> 
</span><span class="cx">     enum ReasonForPause {
</span><span class="lines">@@ -124,7 +125,7 @@
</span><span class="cx"> 
</span><span class="cx">     ReasonForPause reasonForPause() const { return m_reasonForPause; }
</span><span class="cx"> 
</span><del>-    virtual void handlePause(ReasonForPause, JSGlobalObject*) { }
</del><ins>+    virtual void handlePause(JSGlobalObject*, ReasonForPause) { }
</ins><span class="cx">     virtual void notifyDoneProcessingDebuggerEvents() { }
</span><span class="cx"> 
</span><span class="cx"> private:
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoreinspectorScriptDebugServercpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/inspector/ScriptDebugServer.cpp (177584 => 177585)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/inspector/ScriptDebugServer.cpp        2014-12-19 19:34:19 UTC (rev 177584)
+++ trunk/Source/JavaScriptCore/inspector/ScriptDebugServer.cpp        2014-12-19 19:37:19 UTC (rev 177585)
</span><span class="lines">@@ -286,15 +286,20 @@
</span><span class="cx">     m_doneProcessingDebuggerEvents = true;
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-void ScriptDebugServer::handleBreakpointHit(const JSC::Breakpoint&amp; breakpoint)
</del><ins>+void ScriptDebugServer::handleBreakpointHit(JSC::JSGlobalObject* globalObject, const JSC::Breakpoint&amp; breakpoint)
</ins><span class="cx"> {
</span><ins>+    ASSERT(isAttached(globalObject));
+
</ins><span class="cx">     m_currentProbeBatchId++;
</span><ins>+
</ins><span class="cx">     BreakpointIDToActionsMap::iterator it = m_breakpointIDToActions.find(breakpoint.id);
</span><span class="cx">     if (it != m_breakpointIDToActions.end()) {
</span><del>-        BreakpointActions&amp; actions = it-&gt;value;
</del><ins>+        BreakpointActions actions = it-&gt;value;
</ins><span class="cx">         for (size_t i = 0; i &lt; actions.size(); ++i) {
</span><span class="cx">             if (!evaluateBreakpointAction(actions[i]))
</span><span class="cx">                 return;
</span><ins>+            if (!isAttached(globalObject))
+                return;
</ins><span class="cx">         }
</span><span class="cx">     }
</span><span class="cx"> }
</span><span class="lines">@@ -304,7 +309,7 @@
</span><span class="cx">     reportException(exec, exception);
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-void ScriptDebugServer::handlePause(Debugger::ReasonForPause, JSGlobalObject* vmEntryGlobalObject)
</del><ins>+void ScriptDebugServer::handlePause(JSGlobalObject* vmEntryGlobalObject, Debugger::ReasonForPause)
</ins><span class="cx"> {
</span><span class="cx">     dispatchFunctionToListeners(&amp;ScriptDebugServer::dispatchDidPause);
</span><span class="cx">     didPause(vmEntryGlobalObject);
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoreinspectorScriptDebugServerh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/inspector/ScriptDebugServer.h (177584 => 177585)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/inspector/ScriptDebugServer.h        2014-12-19 19:34:19 UTC (rev 177584)
+++ trunk/Source/JavaScriptCore/inspector/ScriptDebugServer.h        2014-12-19 19:37:19 UTC (rev 177585)
</span><span class="lines">@@ -100,9 +100,9 @@
</span><span class="cx"> 
</span><span class="cx">     virtual void sourceParsed(JSC::ExecState*, JSC::SourceProvider*, int errorLine, const String&amp; errorMsg) override final;
</span><span class="cx">     virtual bool needPauseHandling(JSC::JSGlobalObject*) override final { return true; }
</span><del>-    virtual void handleBreakpointHit(const JSC::Breakpoint&amp;) override final;
</del><ins>+    virtual void handleBreakpointHit(JSC::JSGlobalObject*, const JSC::Breakpoint&amp;) override final;
</ins><span class="cx">     virtual void handleExceptionInBreakpointCondition(JSC::ExecState*, JSC::JSValue exception) const override final;
</span><del>-    virtual void handlePause(JSC::Debugger::ReasonForPause, JSC::JSGlobalObject*) override final;
</del><ins>+    virtual void handlePause(JSC::JSGlobalObject*, JSC::Debugger::ReasonForPause) override final;
</ins><span class="cx">     virtual void notifyDoneProcessingDebuggerEvents() override final;
</span><span class="cx"> 
</span><span class="cx">     Deprecated::ScriptValue exceptionOrCaughtValue(JSC::ExecState*);
</span></span></pre></div>
<a id="trunkSourceWebKitmacChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit/mac/ChangeLog (177584 => 177585)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit/mac/ChangeLog        2014-12-19 19:34:19 UTC (rev 177584)
+++ trunk/Source/WebKit/mac/ChangeLog        2014-12-19 19:37:19 UTC (rev 177585)
</span><span class="lines">@@ -1,3 +1,15 @@
</span><ins>+2014-12-19  Joseph Pecoraro  &lt;pecoraro@apple.com&gt;
+
+        Web Inspector: CRASH inspector-protocol/debugger/breakpoint-action-detach.html
+        https://bugs.webkit.org/show_bug.cgi?id=139797
+
+        Reviewed by Mark Lam.
+
+        * WebView/WebScriptDebugger.h:
+        * WebView/WebScriptDebugger.mm:
+        (WebScriptDebugger::handlePause):
+        Standardize on passing JSGlobalObject parameter first.
+
</ins><span class="cx"> 2014-12-19  Commit Queue  &lt;commit-queue@webkit.org&gt;
</span><span class="cx"> 
</span><span class="cx">         Unreviewed, rolling out r177574.
</span></span></pre></div>
<a id="trunkSourceWebKitmacWebViewWebScriptDebuggerh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit/mac/WebView/WebScriptDebugger.h (177584 => 177585)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit/mac/WebView/WebScriptDebugger.h        2014-12-19 19:34:19 UTC (rev 177584)
+++ trunk/Source/WebKit/mac/WebView/WebScriptDebugger.h        2014-12-19 19:37:19 UTC (rev 177585)
</span><span class="lines">@@ -56,7 +56,7 @@
</span><span class="cx"> 
</span><span class="cx"> private:
</span><span class="cx">     virtual void sourceParsed(JSC::ExecState*, JSC::SourceProvider*, int errorLine, const WTF::String&amp; errorMsg) override;
</span><del>-    virtual void handlePause(JSC::Debugger::ReasonForPause, JSC::JSGlobalObject*) override;
</del><ins>+    virtual void handlePause(JSC::JSGlobalObject*, JSC::Debugger::ReasonForPause) override;
</ins><span class="cx">     virtual bool needPauseHandling(JSC::JSGlobalObject*) override { return true; }
</span><span class="cx"> 
</span><span class="cx">     bool m_callingDelegate;
</span></span></pre></div>
<a id="trunkSourceWebKitmacWebViewWebScriptDebuggermm"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit/mac/WebView/WebScriptDebugger.mm (177584 => 177585)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit/mac/WebView/WebScriptDebugger.mm        2014-12-19 19:34:19 UTC (rev 177584)
+++ trunk/Source/WebKit/mac/WebView/WebScriptDebugger.mm        2014-12-19 19:37:19 UTC (rev 177585)
</span><span class="lines">@@ -118,7 +118,7 @@
</span><span class="cx">     m_callingDelegate = false;
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-void WebScriptDebugger::handlePause(Debugger::ReasonForPause reason, JSGlobalObject* globalObject)
</del><ins>+void WebScriptDebugger::handlePause(JSGlobalObject* globalObject, Debugger::ReasonForPause reason)
</ins><span class="cx"> {
</span><span class="cx">     if (m_callingDelegate)
</span><span class="cx">         return;
</span></span></pre>
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