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//===-- MICmdInvoker.h ------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#pragma once
// Third party headers
#include <map>
// In-house headers:
#include "MICmnBase.h"
#include "MICmdData.h"
#include "MICmdMgrSetCmdDeleteCallback.h"
#include "MIUtilSingletonBase.h"
// Declarations:
class CMICmdBase;
class CMICmnStreamStdout;
//++ ============================================================================
// Details: MI Command Invoker. The Invoker works on the command pattern design.
// There two main jobs; action command Execute() function, followed by
// the command's Acknowledge() function. When a command has finished its
// execute function it returns to the invoker. The invoker then calls the
// command's Acknowledge() function to do more work, form and give
// back a MI result. In the meantime the Command Monitor is monitoring
// the each command doing their Execute() function work so they do not
// exceed a time limit which if it exceeds informs the command(s) to
// stop work.
// The work by the Invoker is carried out in the main thread.
// The Invoker takes ownership of any commands created which means it
// is the only object to delete them when a command is finished working.
// A singleton class.
// Gotchas: None.
// Authors: Illya Rudkin 19/02/2014.
// Changes: None.
//--
class CMICmdInvoker : public CMICmnBase, public CMICmdMgrSetCmdDeleteCallback::ICallback, public MI::ISingleton<CMICmdInvoker>
{
friend class MI::ISingleton<CMICmdInvoker>;
// Class:
public:
//++
// Description: Invoker's interface for commands to implement.
//--
class ICmd
{
public:
virtual bool Acknowledge(void) = 0;
virtual bool Execute(void) = 0;
virtual bool ParseArgs(void) = 0;
virtual bool SetCmdData(const SMICmdData &vCmdData) = 0;
virtual const SMICmdData &GetCmdData(void) const = 0;
virtual const CMIUtilString &GetErrorDescription(void) const = 0;
virtual void CmdFinishedTellInvoker(void) const = 0;
virtual const CMIUtilString &GetMIResultRecord(void) const = 0;
virtual const CMIUtilString &GetMIResultRecordExtra(void) const = 0;
virtual bool HasMIResultRecordExtra(void) const = 0;
/* dtor */ virtual ~ICmd(void){};
};
// Methods:
public:
bool Initialize(void) override;
bool Shutdown(void) override;
bool CmdExecute(CMICmdBase &vCmd);
bool CmdExecuteFinished(CMICmdBase &vCmd);
// Typedefs:
private:
typedef std::map<MIuint, CMICmdBase *> MapCmdIdToCmd_t;
typedef std::pair<MIuint, CMICmdBase *> MapPairCmdIdToCmd_t;
// Methods:
private:
/* ctor */ CMICmdInvoker(void);
/* ctor */ CMICmdInvoker(const CMICmdInvoker &);
void operator=(const CMICmdInvoker &);
void CmdDeleteAll(void);
bool CmdDelete(const MIuint vCmdId, const bool vbYesDeleteCmd = false);
bool CmdAdd(const CMICmdBase &vCmd);
bool CmdStdout(const SMICmdData &vCmdData) const;
void CmdCauseAppExit(const CMICmdBase &vCmd) const;
// Overridden:
private:
// From CMICmnBase
/* dtor */ ~CMICmdInvoker(void) override;
// From CMICmdMgrSetCmdDeleteCallback::ICallback
void Delete(SMICmdData &vCmd) override;
// Attributes:
private:
MapCmdIdToCmd_t m_mapCmdIdToCmd;
CMICmnStreamStdout &m_rStreamOut;
};
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