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// *************************************************************************
// gdbcommandqueue.cpp
// -------------------
// begin : Wed Dec 5, 2007
// copyright : (C) 2007 by Hamish Rodda
// email : rodda@kde.org
// **************************************************************************
//
// **************************************************************************
// * *
// * This program is free software; you can redistribute it and/or modify *
// * it under the terms of the GNU General Public License as published by *
// * the Free Software Foundation; either version 2 of the License, or *
// * (at your option) any later version. *
// * *
// **************************************************************************
#include "micommandqueue.h"
#include "mi.h"
#include "micommand.h"
#include "debuglog.h"
using namespace KDevMI::MI;
CommandQueue::CommandQueue()
{
}
CommandQueue::~CommandQueue()
{
qDeleteAll(m_commandList);
}
void CommandQueue::enqueue(MICommand* command)
{
++m_tokenCounter;
if (m_tokenCounter == 0)
m_tokenCounter = 1;
command->setToken(m_tokenCounter);
// take the time when this command was added to the command queue
command->markAsEnqueued();
m_commandList.append(command);
if (command->flags() & (CmdImmediately | CmdInterrupt))
++m_immediatelyCounter;
rationalizeQueue(command);
dumpQueue();
}
void CommandQueue::dumpQueue() const
{
qCDebug(DEBUGGERCOMMON) << "Pending commands" << m_commandList.count();
unsigned commandNum = 0;
for (const MICommand* command : m_commandList) {
qCDebug(DEBUGGERCOMMON) << "Command" << commandNum << command->initialString();
++commandNum;
}
}
void CommandQueue::rationalizeQueue(MICommand* command)
{
if ((command->type() >= ExecAbort && command->type() <= ExecUntil) &&
command->type() != ExecArguments ) {
// Changing execution location, abort any variable updates
removeVariableUpdates();
// ... and stack list updates
removeStackListUpdates();
}
}
void CommandQueue::removeVariableUpdates()
{
QMutableListIterator<MICommand*> it = m_commandList;
while (it.hasNext()) {
MICommand* command = it.next();
CommandType type = command->type();
if ((type >= VarEvaluateExpression && type <= VarListChildren) || type == VarUpdate) {
if (command->flags() & (CmdImmediately | CmdInterrupt))
--m_immediatelyCounter;
it.remove();
delete command;
}
}
}
void CommandQueue::removeStackListUpdates()
{
QMutableListIterator<MICommand*> it = m_commandList;
while (it.hasNext()) {
MICommand* command = it.next();
CommandType type = command->type();
if (type >= StackListArguments && type <= StackListLocals) {
if (command->flags() & (CmdImmediately | CmdInterrupt))
--m_immediatelyCounter;
it.remove();
delete command;
}
}
}
void CommandQueue::clear()
{
qDeleteAll(m_commandList);
m_commandList.clear();
m_immediatelyCounter = 0;
}
int CommandQueue::count() const
{
return m_commandList.count();
}
bool CommandQueue::isEmpty() const
{
return m_commandList.isEmpty();
}
bool CommandQueue::haveImmediateCommand() const
{
return m_immediatelyCounter > 0;
}
MICommand* CommandQueue::nextCommand()
{
if (m_commandList.isEmpty())
return nullptr;
MICommand* command = m_commandList.takeAt(0);
if (command->flags() & (CmdImmediately | CmdInterrupt))
--m_immediatelyCounter;
return command;
}
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