etbasic.h

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/*
* 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