41 windows_41_Thread_Semaphore 线程 - 信号

windows_41_Thread_Semaphore 线程 - 信号 


  1. // windows_41_Thread_Semaphore.cpp : 定义控制台应用程序的入口点。
  2. //
  4. #include "stdafx.h"
  5. #include "windows.h"
  6. /*
  7.   效果：前面很快出五个，后面一秒出一个
  8. */
  9. //1、创建信号量
  10. //CreateSemaphore
  11. //2、等候信号量
  12. //WaitForSingleObject
  13. //WaitForMultipleObjects
  14. //3、释放信号
  15. //ReleaseSemaphore
  16. //4、关闭信号量
  17. //CloseHandle
  18. HANDLE g_hSemaphore = NULL;
  20. //输入1或者5发送1或者5个信号量
  21. DWORD WINAPI ThreadSend3( LPVOID pParam )
  22. {
  23.   while (true)
  24.   {
  25.     //3、释放信号
  26.     //ReleaseSemaphore
  27.     Sleep( 1000 );
  28.     CHAR ch = getchar( );
  29.     switch (ch)
  30.     {
  31.     case '1':
  32.       //释放信号
  33.       ReleaseSemaphore( g_hSemaphore, 1, NULL );
  34.       break;
  35.     case '5':
  36.       ReleaseSemaphore( g_hSemaphore, 5, NULL );
  37.       break;
  38.     }
  39.   }
  40.   return 0;
  41. }
  43. DWORD WINAPI ThreadSend( LPVOID pParam )
  44. {
  45.   while (true)
  46.   {
  47. //3、释放信号
  48. //ReleaseSemaphore
  49.     ReleaseSemaphore( g_hSemaphore, 1, NULL );
  50.     Sleep( 1000 );
  51.   }
  52.   return 0;
  53. }
  55. DWORD WINAPI ThreadRecv( LPVOID pParam )
  56. {
  57.   while (true)
  58.   {
  59.     WaitForSingleObject( g_hSemaphore, INFINITE );
  60.     printf( "Hello Semaphore\n" );
  61.     Sleep( 100 );
  62.   }
  63.   return 0;
  64. }
  65. void Create( )
  66. {
  67.   DWORD nThreadID = 0;
  68.   HANDLE hThread[2] = { 0 };
  70.   hThread[0] = CreateThread( NULL, 0, ThreadSend, NULL, 0 ,&nThreadID);
  71.   hThread[1] = CreateThread( NULL, 0, ThreadRecv, NULL, 0 ,&nThreadID);
  73.   // 等候两个线程的结束
  74.   WaitForMultipleObjects( 2, hThread, TRUE, INFINITE );
  75. }
  76. int _tmain(int argc, _TCHAR* argv[])
  77. {
  79. //1、创建信号量
  80. //CreateSemaphore
  81.   g_hSemaphore = CreateSemaphore( NULL, 5, 10, NULL );
  82.   Create( );
  84. //4、关闭信号量
  85. //CloseHandle
  86.   CloseHandle( g_hSemaphore );
  87. 	return 0;
  88. }





posted @ 2016-06-10 20:45  -刀狂剑痴-  阅读(224)  评论(0)  编辑  收藏  举报