Change the AppleObjCTrampolineHandler to always run all threads when resolving the target of an ObjC method call.

Add a StopOthers method to AppleThreadPlanStepThroughObjCTrampoline, don't rely on the setting in the ThreadPlanToCallFunction, since that
gets pushed too late to determine which threads will continue.

<rdar://problem/13447638>

llvm-svn: 177691

lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCTrampolineHandler.cpp

@@ -1106,12 +1106,16 @@ AppleObjCTrampolineHandler::GetStepThroughDispatchPlan (Thread &thread, bool sto
                 flag_value.GetScalar() = 0;  // FIXME - Set to 0 when debugging is done.
             dispatch_values.PushValue (flag_value);
             
+            
+            // The step through code might have to fill in the cache, so it is not safe to run only one thread.
+            // So we override the stop_others value passed in to us here:
+            const bool trampoline_stop_others = false;
             ret_plan_sp.reset (new AppleThreadPlanStepThroughObjCTrampoline (thread,
                                                                              this,
                                                                              dispatch_values,
                                                                              isa_addr,
                                                                              sel_addr,
-                                                                             stop_others));
+                                                                             trampoline_stop_others));
             if (log)
             {
                 StreamString s;

lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleThreadPlanStepThroughObjCTrampoline.h

@@ -54,6 +54,12 @@ public:
 
     virtual bool
     ShouldStop (Event *event_ptr);
+    
+    virtual bool
+    StopOthers()
+    {
+        return m_stop_others;
+    }
 
     // The base class MischiefManaged does some cleanup - so you have to call it
     // in your MischiefManaged derived class.