Fix handling of CommandInterpreter's events in lldb-mi

Summary:
Previously lldb-mi contains a stub for that but it didn't work and all CommanInterpreter's events were ignored.
This commit adds a handling of CommandInterpreter's events in lldb-mi.

Steps:
# Fix CMICmnLLDBDebugger::InitSBListener
# Add SBCommandInterpreter::EventIsCommandInterpreterEvent
# Exit on lldb::SBCommandInterpreter::eBroadcastBitQuitCommandReceived

All tests pass on OS X.

In further we can remove "quit" hack in lldb-mi.

Test Plan:
# Create start_script file:
```
target create ~/p/hello
b main
r
quit
```

# Run lldb-mi --interpreter
# Execute start_script file by following command:
```
-interpreter-exec console "command source start_script"
```

Log:
```
$ bin/lldb-mi --interpreter
(gdb)
-interpreter-exec console "command source start_script"
Executing commands in '/Users/IliaK/p/llvm/build_ninja/start_script'.
(lldb) target create ~/p/hello
Current executable set to '~/p/hello' (x86_64).
(lldb) b main
Breakpoint 1: where = hello`main + 29 at hello.cpp:12, address = 0x0000000100000e2d
(lldb) r
Process 1582 launched: '/Users/IliaK/p/hello' (x86_64)
(lldb) quit
^done
(gdb)
=thread-created,id="1",group-id="i1"
=thread-selected,id="1"
(gdb)
=shlibs-added,shlib-info=[num="1",name="hello",dyld-addr="-",reason="dyld",path="/Users/IliaK/p/hello",loaded_addr="-",dsym-objpath="/Users/IliaK/p/hello.dSYM/Contents/Resources/DWARF/hello"]
...
=shlibs-added,shlib-info=[num="132",name="libDiagnosticMessagesClient.dylib",dyld-addr="0x7fff91705000",reason="dyld",path="/usr/lib/libDiagnosticMessagesClient.dylib",loaded_addr="0x7fff91705000"]
(gdb)
*stopped,reason="breakpoint-hit",disp="del",bkptno="1",frame={addr="0x100000e2d",func="main",args=[{name="argc",value="1"},{name="argv",value="0x00007fff5fbffc88"}],file="hello.cpp",fullname="/Users/IliaK/p/hello.cpp",line="12"},thread-id="1",stopped-threads="all"
(gdb)<press Enter>



MI: Program exited OK
```

Reviewers: abidh, clayborg

Reviewed By: abidh

Subscribers: jingham, lldb-commits, clayborg, abidh

Differential Revision: http://reviews.llvm.org/D8382

llvm-svn: 232891

lldb/include/lldb/API/SBCommandInterpreter.h

@@ -94,6 +94,9 @@ public:
     
     static const char *
     GetArgumentDescriptionAsCString (const lldb::CommandArgumentType arg_type);
+
+    static bool
+    EventIsCommandInterpreterEvent (const lldb::SBEvent &event);
     
     bool
     IsValid() const;

lldb/source/API/SBCommandInterpreter.cpp

@@ -20,6 +20,7 @@
 #include "lldb/API/SBBroadcaster.h"
 #include "lldb/API/SBCommandReturnObject.h"
 #include "lldb/API/SBCommandInterpreter.h"
+#include "lldb/API/SBEvent.h"
 #include "lldb/API/SBExecutionContext.h"
 #include "lldb/API/SBProcess.h"
 #include "lldb/API/SBTarget.h"
@@ -547,6 +548,12 @@ SBCommandInterpreter::GetArgumentDescriptionAsCString (const lldb::CommandArgume
     return CommandObject::GetArgumentDescriptionAsCString (arg_type);
 }
 
+bool
+SBCommandInterpreter::EventIsCommandInterpreterEvent (const lldb::SBEvent &event)
+{
+    return strcmp (event.GetBroadcasterClass(), SBCommandInterpreter::GetBroadcasterClass()) == 0;
+}
+
 bool
 SBCommandInterpreter::SetCommandOverrideCallback (const char *command_name,
                                                   lldb::CommandOverrideCallback callback,

lldb/tools/lldb-mi/MICmnLLDBDebugger.cpp

@@ -296,7 +296,7 @@ CMICmnLLDBDebugger::InitSBListener(void)
     eventMask = lldb::SBCommandInterpreter::eBroadcastBitQuitCommandReceived | lldb::SBCommandInterpreter::eBroadcastBitThreadShouldExit |
                 lldb::SBCommandInterpreter::eBroadcastBitAsynchronousOutputData |
                 lldb::SBCommandInterpreter::eBroadcastBitAsynchronousErrorData;
-    bOk = bOk && RegisterForEvent(strDbgId, CMIUtilString(lldb::SBCommandInterpreter::GetBroadcasterClass()), eventMask);
+    bOk = bOk && RegisterForEvent(strDbgId, m_lldbDebugger.GetCommandInterpreter().GetBroadcaster(), eventMask);
 
     return bOk;
 }

lldb/tools/lldb-mi/MICmnLLDBDebuggerHandleEvents.cpp

@@ -28,6 +28,7 @@
 #include "MICmnLLDBDebuggerHandleEvents.h"
 #include "MICmnResources.h"
 #include "MICmnLog.h"
+#include "MICmnLLDBDebugger.h"
 #include "MICmnLLDBDebugSessionInfo.h"
 #include "MICmnMIResultRecord.h"
 #include "MICmnMIValueConst.h"
@@ -146,6 +147,11 @@ CMICmnLLDBDebuggerHandleEvents::HandleEvent(const lldb::SBEvent &vEvent, bool &v
         vrbHandledEvent = true;
         bOk = HandleEventSBTarget(vEvent);
     }
+    else if (lldb::SBCommandInterpreter::EventIsCommandInterpreterEvent(vEvent))
+    {
+        vrbHandledEvent = true;
+        bOk = HandleEventSBCommandInterpreter(vEvent);
+    }
 
     return bOk;
 }
@@ -756,8 +762,12 @@ CMICmnLLDBDebuggerHandleEvents::HandleEventSBCommandInterpreter(const lldb::SBEv
             pEventType = "eBroadcastBitResetPrompt";
             break;
         case lldb::SBCommandInterpreter::eBroadcastBitQuitCommandReceived:
+        {
             pEventType = "eBroadcastBitQuitCommandReceived";
+            const bool bForceExit = true;
+            CMICmnLLDBDebugger::Instance().GetDriver().SetExitApplicationFlag(bForceExit);
             break;
+        }
         case lldb::SBCommandInterpreter::eBroadcastBitAsynchronousOutputData:
             pEventType = "eBroadcastBitAsynchronousOutputData";
             break;