threadpriority.cpp

Visual_C++[1].NET_Bible1 Visual_C++宝典书中的全部源码

#include "stdafx.h"

#using <mscorlib.dll>
#include <tchar.h>
#include <math.h>

using namespace System;
using namespace System::Threading;

__gc class CWorkerThread
{
public:
  CWorkerThread(int iStart, int iEnd);

public: 
  void ThreadMethod();

public:
  Thread* m_pThread;

public:
  void Start();

protected:
  int m_iStart;
  int m_iEnd;
};

CWorkerThread::CWorkerThread(int iStart, int iEnd)
: m_iStart(iStart), m_iEnd(iEnd)
{
  m_pThread = new Thread(new ThreadStart(this, &CWorkerThread::ThreadMethod));
}

void CWorkerThread::Start()
{
  if (m_pThread)
  {
    m_pThread->Start();
  }
}

void CWorkerThread::ThreadMethod()
{
  Console::WriteLine("Worker thread started");

  Console::WriteLine("Worker thread - counting slowly from {0} to {1}",
    __box(m_iStart), __box(m_iEnd));

  for (int i = m_iStart; i < m_iEnd; i++) 
  {
    for (int j = 0; j < 50; j++) 
    {    
      Console::Write(".");

      // Code to imitate work being done. 
      int a;
      a = 15;
    }
    Console::Write("{0}", __box(i));
  }

  Console::WriteLine("Worker thread finished");
}

int _tmain(void)
{   
  CWorkerThread* p1 = new CWorkerThread(1, 10);
  CWorkerThread* p2 = new CWorkerThread(11, 20);

  Console::WriteLine("[_tmain] Creating worker threads");

  p1->m_pThread->Priority = ThreadPriority::Highest;
  p2->m_pThread->Priority = ThreadPriority::Lowest;

  p1->Start();
  p2->Start();

  Console::ReadLine();
}