Cdb: Store pending commands in an Hash.

Use the command token as the key. Simplifies the CdbCommand,
because the command token doesn't need to be stored in the class.

Change-Id: Ic43ba16529db6e11ce00db1db49b384a627a4941
Reviewed-by: Niels Weber <niels.weber@theqtcompany.com>

src/plugins/debugger/cdb/cdbengine.cpp

@@ -197,28 +197,12 @@ static inline bool isCreatorConsole(const DebuggerRunParameters &sp)
 class CdbCommand
 {
 public:
-    CdbCommand()
-        : token(0)
-    {}
-
-    CdbCommand(int token, CdbEngine::CommandHandler h)
-        : token(token), handler(h)
-    {}
-
-    int token;
+    CdbCommand() {}
+    CdbCommand(CdbEngine::CommandHandler h) : handler(h) {}
 
     CdbEngine::CommandHandler handler;
 };
 
-int indexOfCommand(const QList<QSharedPointer<CdbCommand> > &l, int token)
-{
-    const int count = l.size();
-    for (int i = 0; i < count; i++)
-        if (l.at(i)->token == token)
-            return i;
-    return -1;
-}
-
 static inline bool validMode(DebuggerStartMode sm)
 {
     return sm != NoStartMode;
@@ -306,7 +290,7 @@ void CdbEngine::init()
     m_wow64State = wow64Uninitialized;
 
     m_outputBuffer.clear();
-    m_commandQueue.clear();
+    m_commandForToken.clear();
     m_currentBuiltinResponse.clear();
     m_extensionMessageBuffer.clear();
     m_pendingBreakpointMap.clear();
@@ -780,7 +764,7 @@ void CdbEngine::runEngine()
 
 bool CdbEngine::commandsPending() const
 {
-    return !m_commandQueue.isEmpty();
+    return !m_commandForToken.isEmpty();
 }
 
 void CdbEngine::shutdownInferior()
@@ -1193,9 +1177,9 @@ void CdbEngine::postBuiltinCommand(const QByteArray &cmd,
         return;
     }
     const int token = m_nextCommandToken++;
-    CdbCommandPtr pendingCommand(new CdbCommand(token, handler));
+    CdbCommandPtr pendingCommand(new CdbCommand(handler));
 
-    m_commandQueue.push_back(pendingCommand);
+    m_commandForToken.insert(token, pendingCommand);
     // Enclose command in echo-commands for token
     QByteArray fullCmd;
     ByteArrayInputStream str(fullCmd);
@@ -1204,7 +1188,7 @@ void CdbEngine::postBuiltinCommand(const QByteArray &cmd,
     if (debug)
         qDebug("CdbEngine::postBuiltinCommand %dms '%s' token=%d %s, pending=%d",
                elapsedLogTime(), cmd.constData(), token, stateName(state()),
-               m_commandQueue.size());
+               m_commandForToken.size());
     if (debug > 1)
         qDebug("CdbEngine::postBuiltinCommand: resulting command '%s'\n",
                fullCmd.constData());
@@ -1233,14 +1217,14 @@ void CdbEngine::postExtensionCommand(const QByteArray &cmd,
     if (!arguments.isEmpty())
         str <<  ' ' << arguments;
 
-    CdbCommandPtr pendingCommand(new CdbCommand(token, handler));
+    CdbCommandPtr pendingCommand(new CdbCommand(handler));
 
-    m_commandQueue.push_back(pendingCommand);
+    m_commandForToken.insert(token, pendingCommand);
     // Enclose command in echo-commands for token
     if (debug)
         qDebug("CdbEngine::postExtensionCommand %dms '%s' token=%d %s, pending=%d",
                elapsedLogTime(), fullCmd.constData(), token, stateName(state()),
-               m_commandQueue.size());
+               m_commandForToken.size());
     postCommand(fullCmd);
 }
 
@@ -2254,13 +2238,12 @@ void CdbEngine::handleExtensionMessage(char t, int token, const QByteArray &what
             showMessage(QString::fromLatin1(message), LogMisc);
             return;
         }
-        const int index = indexOfCommand(m_commandQueue, token);
-        if (index != -1) {
         // Did the command finish? Take off queue and complete, invoke CB
-            const CdbCommandPtr command = m_commandQueue.takeAt(index);
+        const CdbCommandPtr command = m_commandForToken.take(token);
+        if (!command.isNull()) {
             if (debug)
                 qDebug("### Completed extension command for token=%d, pending=%d",
-                       command->token, m_commandQueue.size());
+                       token, m_commandForToken.size());
 
             if (!command->handler)
                 return;
@@ -2441,13 +2424,12 @@ void CdbEngine::parseOutputLine(QByteArray line)
             if (debug)
                 qDebug("### Completed builtin command for token=%d, %d lines, pending=%d",
                        m_currentBuiltinResponseToken, m_currentBuiltinResponse.count('\n'),
-                       m_commandQueue.size() - 1);
+                       m_commandForToken.size() - 1);
             QTC_ASSERT(token == m_currentBuiltinResponseToken, return);
             if (boolSetting(VerboseLog))
                 showMessage(QLatin1String(m_currentBuiltinResponse), LogMisc);
-            const int commandIndex = indexOfCommand(m_commandQueue, m_currentBuiltinResponseToken);
-            QTC_ASSERT(commandIndex >= 0 && commandIndex < m_commandQueue.size(), return);
-            const CdbCommandPtr &currentCommand = m_commandQueue.at(commandIndex);
+            const CdbCommandPtr &currentCommand = m_commandForToken.take(token);
+            QTC_ASSERT(!currentCommand.isNull(), return);
             DebuggerResponse response;
             response.token = token;
             response.data.m_name = "data";
@@ -2456,7 +2438,6 @@ void CdbEngine::parseOutputLine(QByteArray line)
             response.resultClass = ResultDone;
             if (currentCommand->handler)
                 currentCommand->handler(response);
-            m_commandQueue.removeAt(commandIndex);
             m_currentBuiltinResponseToken = -1;
             m_currentBuiltinResponse.clear();
         } else {

src/plugins/debugger/cdb/cdbengine.h

@@ -245,7 +245,7 @@ private:
     SpecialStopMode m_specialStopMode;
     ProjectExplorer::DeviceProcessSignalOperation::Ptr m_signalOperation;
     int m_nextCommandToken;
-    QList<CdbCommandPtr> m_commandQueue;
+    QHash<int, CdbCommandPtr> m_commandForToken;
     QByteArray m_currentBuiltinResponse;
     int m_currentBuiltinResponseToken;
     QMap<QString, NormalizedSourceFileName> m_normalizedFileCache;