etbasic.h

Go to the documentation of this file.

/*
* Copyright (c) 2019 Sprint
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*    http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

#ifndef __ETBASIC_H
#define __ETBASIC_H

#include "ebase.h"
#include "eerror.h"
#include "esynch.h"


class EThreadError_AlreadyInitialized : public EError
{
};

class EThreadError_UnableToInitialize : public EError
{
public:
   EThreadError_UnableToInitialize();
};


class EThreadBasic;

typedef list<EThreadBasic *> EThreadPtrList;

class EThreadBasic
{
   friend class EThreadBase;
   friend class EpcTools;

public:
   enum RunState
   {
      rsWaitingToRun,
      rsRunning,
      rsDoneRunning
   };

   EThreadBasic();
   virtual ~EThreadBasic();

   virtual Dword threadProc(pVoid arg) = 0;

   Void init(pVoid arg, size_t stackSize = 0);
   Void join();

   static Void sleep(Int milliseconds);
   static Void yield();

   Bool isInitialized();

   RunState getRunState() { return m_state; }

   Bool isWaitingToRun() { return m_state == EThreadBasic::rsWaitingToRun; }
   Bool isRunning() { return m_state == EThreadBasic::rsRunning; }
   Bool isDoneRunning() { return m_state == EThreadBasic::rsDoneRunning; }

   Int cancelWait();

   Void signal(Int sig) { pthread_kill(m_thread, sig); }

protected:
   static Void Initialize();
   static Void UnInitialize();

private:
   Bool m_initialized;
   pthread_t m_thread;
   static pVoid _threadProc(pVoid arg);
   static EThreadBasic *findCurrentThread();
   static EThreadPtrList m_thrdCtl;
   static EMutexPrivate m_thrdCtlMutex;

   Void _shutdown();

   EMutexPrivate m_mutex;
   RunState m_state;
   pVoid m_arg;
   Dword m_exitCode;
};

#endif // #ifndef __ETBASIC_H