[lldb-mi] Simplify CMICmnLLDBDebugSessionInfo::Shutdown.

[brucem]

Summary

• SharedDataDestroy couldn't fail, so no need to return a status.
• No need for status, so can remove error message. The error message wasn't displayed or used anywhere anyway.

[abidh]

LGTM.

lldb/trunk/tools/lldb-mi/MICmnLLDBDebugSessionInfo.h

public:
     // Methods:
   public:
     bool Initialize() override;
     bool Shutdown() override;
 
     // Variant type data which can be assigned and retrieved across all command instances
     template <typename T> bool SharedDataAdd(const CMIUtilString &vKey, const T &vData);
     template <typename T> bool SharedDataRetrieve(const CMIUtilString &vKey, T &vwData);
-    bool SharedDataDestroy();
+    void SharedDataDestroy();
 
     //  Common command required functionality
     bool AccessPath(const CMIUtilString &vPath, bool &vwbYesAccessible);
     bool ResolvePath(const SMICmdData &vCmdData, const CMIUtilString &vPath, CMIUtilString &vwrResolvedPath);
     bool ResolvePath(const CMIUtilString &vstrUnknown, CMIUtilString &vwrResolvedPath);
     bool MIResponseFormFrameInfo(const lldb::SBThread &vrThread, const MIuint vnLevel,
                                  const FrameInfoFormat_e veFrameInfoFormat, CMICmnMIValueTuple &vwrMiValueTuple);
     bool MIResponseFormThreadInfo(const SMICmdData &vCmdData, const lldb::SBThread &vrThread,

lldb/trunk/tools/lldb-mi/MICmnLLDBDebugSessionInfo.cpp

 CMICmnLLDBDebugSessionInfo::Shutdown()
 {
     if (--m_clientUsageRefCnt > 0)
         return MIstatus::success;
 
     if (!m_bInitialized)
         return MIstatus::success;
 
-    bool bOk = MIstatus::success;
-    CMIUtilString errMsg;
-
     // Tidy up
-    bOk = SharedDataDestroy();
-    if (!bOk)
-    {
-        errMsg = MIRSRC(IDS_DBGSESSION_ERR_SHARED_DATA_RELEASE);
-        errMsg += "\n";
-    }
+    SharedDataDestroy();
+
     m_vecActiveThreadId.clear();
     CMICmnLLDBDebugSessionInfoVarObj::VarObjClear();
 
     m_bInitialized = false;
 
     return MIstatus::success;
 }
 
 //++ ------------------------------------------------------------------------------------
 // Details: Command instances can create and share data between other instances of commands.
 //          Data can also be assigned by a command and retrieved by LLDB event handler.
 //          This function takes down those resources build up over the use of the commands.
 //          This function should be called when the creation and running of command has
 //          stopped i.e. application shutdown.
 // Type:    Method.
 // Args:    None.
-// Return:  MIstatus::success - Functional succeeded.
-//          MIstatus::failure - Functional failed.
+// Return:  None.
 // Throws:  None.
 //--
-bool
+void
 CMICmnLLDBDebugSessionInfo::SharedDataDestroy()
 {
     m_mapIdToSessionData.Clear();
     m_vecVarObj.clear();
     m_mapBrkPtIdToBrkPtInfo.clear();
-
-    return MIstatus::success;
 }
 
 //++ ------------------------------------------------------------------------------------
 // Details: Record information about a LLDB break point so that is can be recalled in other
 //          commands or LLDB event handling functions.
 // Type:    Method.
 // Args:    vBrkPtId        - (R) LLDB break point ID.
 //          vrBrkPtInfo     - (R) Break point information object.

lldb/trunk/tools/lldb-mi/MICmnResources.h

enum
     IDS_LLDBOUTOFBAND_ERR_BRKPT_NOTFOUND,
     IDS_LLDBOUTOFBAND_ERR_BRKPT_INFO_GET,
     IDS_LLDBOUTOFBAND_ERR_BRKPT_INFO_SET,
     IDS_LLDBOUTOFBAND_ERR_FORM_MI_RESPONSE,
     IDS_LLDBOUTOFBAND_ERR_FRAME_INFO_GET,
     IDS_LLDBOUTOFBAND_ERR_SETNEWDRIVERSTATE,
     IDS_LLDBOUTOFBAND_ERR_BRKPT_CNT_EXCEEDED,
 
-    IDS_DBGSESSION_ERR_SHARED_DATA_RELEASE,
     IDS_DBGSESSION_ERR_SHARED_DATA_ADD,
 
     IDS_MI_SHTDWN_ERR_LOG,
     IDS_MI_SHUTDOWN_ERR,
     IDE_MI_SHTDWN_ERR_RESOURCES,
     IDE_MI_SHTDWN_ERR_STREAMSTDIN,
     IDS_MI_SHTDWN_ERR_OS_STDIN_HANDLER,
     IDS_MI_SHTDWN_ERR_STREAMSTDOUT,

lldb/trunk/tools/lldb-mi/MICmnResources.cpp

const CMICmnResources::SRsrcTextData CMICmnResources::ms_pResourceId2TextData[] = {
     {IDS_LLDBOUTOFBAND_ERR_BRKPT_INFO_GET, "LLDB Out-of-band. %s. Failed to retrieve breakpoint information for for breakpoint ID %d"},
     {IDS_LLDBOUTOFBAND_ERR_BRKPT_INFO_SET, "LLDB Out-of-band. %s. Failed to set breakpoint information for for breakpoint ID %d"},
     {IDS_LLDBOUTOFBAND_ERR_FORM_MI_RESPONSE, "LLDB Out-of-band. %s. Failed to form the MI Out-of-band response"},
     {IDS_LLDBOUTOFBAND_ERR_FRAME_INFO_GET, "LLDB Out-of-band. %s. Failed to retrieve frame information"},
     {IDS_LLDBOUTOFBAND_ERR_SETNEWDRIVERSTATE,
      "LLDB Out-of-band. %s. Event handler tried to set new MI Driver running state and failed. %s"},
     {IDS_LLDBOUTOFBAND_ERR_BRKPT_CNT_EXCEEDED,
      "LLDB Out-of-band. '%s'. Number of valid breakpoint exceeded %d. Cannot create new breakpoint with ID %d"},
-    {IDS_DBGSESSION_ERR_SHARED_DATA_RELEASE,
-     "LLDB debug session info. Release some or all of the data shared across command instances failed"},
     {IDS_DBGSESSION_ERR_SHARED_DATA_ADD, "LLDB debug session info. Failed to add '%s' data to the shared data command container"},
     {IDS_MI_SHTDWN_ERR_LOG, "Log. Error occurred during shutdown. %s"},
     {IDS_MI_SHUTDOWN_ERR, "Server shutdown failure. %s"},
     {IDE_MI_SHTDWN_ERR_RESOURCES, "Resources. Error occurred during shutdown. %s"},
     {IDE_MI_SHTDWN_ERR_STREAMSTDIN, "Stdin. Error occurred during shutdown. %s"},
     {IDS_MI_SHTDWN_ERR_OS_STDIN_HANDLER, "Stdin handler. Error occurred during shutdown. %s"},
     {IDS_MI_SHTDWN_ERR_STREAMSTDOUT, "Stdout. Error occurred during shutdown. %s"},
     {IDS_MI_SHTDWN_ERR_STREAMSTDERR, "Stderr. Error occurred during shutdown. %s"},