38 windows_38_thread_CriticalSection 线程-临界区

Posted 2020-07-24 养老保险年审

windows_38_thread_CriticalSection 线程-临界区

// windows_38_thread_CriticalSection.cpp : 定义控制台应用程序的入口点。
//
#include "stdafx.h"
#include "windows.h"
CRITICAL_SECTION g_cs = { 0 };
long g_nValue = 0;
void Print( )
{
  //进入临界区 - 加锁
  EnterCriticalSection( &g_cs );
  for (int i = 0; i < 10000000;i++)
  {
    g_nValue++;
  }
  printf( "Long long long ...Long long%ld\n",g_nValue );
  //离开临界区 - 解锁
  LeaveCriticalSection( &g_cs );
}
DWORD WINAPI PrintProc( LPVOID pWparam )
{
  int i = 0;
  Print( );
  Sleep( 1 );
  return 0;
}
void Create( )
{
  DWORD nThreadID = 0;
  HANDLE hThread[2] = { 0 };
  hThread[0] = CreateThread( NULL, 0, PrintProc, NULL, 0, &nThreadID );
  hThread[1] = CreateThread( NULL, 0, PrintProc, NULL, 0, &nThreadID );
  getchar( );
}
int _tmain(int argc, _TCHAR* argv[])
{
  //初始化临界区
  InitializeCriticalSection( &g_cs );
  Create( );
  
  //删除临界区
  DeleteCriticalSection( &g_cs );
	return 0;
}

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