// Semaphore.cpp : 定义控制台应用程序的入口点。  //    #include "stdafx.h"  #include <Windows.h>  #include <process.h>     HANDLE g_hSemaphore;  DWORD g_nConut1 = 0;  DWORD g_nConut2 = 0;  unsigned __stdcall ThreadProc1( void* pArguments )  {      ::WaitForSingleObject(g_hSemaphore, INFINITE);      for (int i=0;i<10000;i++)      {          g_nConut1++;          g_nConut2++;      }      ::ReleaseSemaphore(g_hSemaphore, 1, NULL);      printf("ThreadProc1\n");      return 0;  }    unsigned __stdcall ThreadProc2( void* pArguments )  {      ::WaitForSingleObject(g_hSemaphore, INFINITE);      for (int i=0;i<10000;i++)      {          g_nConut1++;          g_nConut2++;      }      ::ReleaseSemaphore(g_hSemaphore, 1, NULL);      printf("ThreadProc2\n");      return 0;  }    unsigned __stdcall ThreadProc3( void* pArguments )  {      ::WaitForSingleObject(g_hSemaphore, INFINITE);      for (int i=0;i<10000;i++)      {          g_nConut1++;          g_nConut2++;      }      ::ReleaseSemaphore(g_hSemaphore, 1, NULL);      printf("ThreadProc3\n");      return 0;  }  int _tmain(int argc, _TCHAR* argv[])  {      g_hSemaphore = ::CreateSemaphore(NULL, 2, 2, NULL);      HANDLE hThread[3];      hThread[0] = (HANDLE)::_beginthreadex(NULL, 0, ThreadProc1, NULL, 0, NULL);      hThread[1] = (HANDLE)::_beginthreadex(NULL, 0, ThreadProc2, NULL, 0, NULL);      hThread[2] = (HANDLE)::_beginthreadex(NULL, 0, ThreadProc3, NULL, 0, NULL);        ::WaitForMultipleObjects(2,hThread,TRUE, INFINITE);      printf("g_count1=%d\n", g_nConut1);      printf("g_count2=%d\n", g_nConut2);      printf("main finished.\n");      return 0;  }