最简单的windows 多线程代码

//mingw 3.02编译通过

1 #include <>

2 #include <>

3 #include <>

4 #include <>

5

6 typedef void * PVOID;

7 typedef void * LPVOID;

8

9

10 DWORD WINAPI ThreadFunc(LPVOID);

11

12 int main() {

13 HANDLE hThrd1;

14 HANDLE hThrd2;

15 DWORD exitCode1 = 0 ;

16 DWORD exitCode2 = 0 ;

17 DWORD threadId;

18

19

20 /* hThread = CreateThread (&security_attributes, dwStackSize, ThreadProc,pParam, dwFlags, &idThread)

21 WINBASEAPI HANDLE WINAPI CreateThread(LPSECURITY_ATTRIBUTES,DWORD,LPTHREAD_START_ROUTINE,PVOID,DWORD,PDWORD);

22 第一个参数是指向SECURITY_ATTRIBUTES型态的结构的指针。在Windows 98中忽略该参数。在Windows NT中，它被设为NULL。

23 第二个参数是用于新线程的初始堆栈大小，默认值为0。在任何情况下，Windows根据需要动态延长堆栈的大小。

24 第三个参数是指向线程函数的指标。函数名称没有限制，但是必须以下列形式声明:DWORD WINAPI ThreadProc (PVOID pParam) ;

25 第四个参数为传递给ThreadProc的参数。这样主线程和从属线程就可以共享数据。

26 第五个参数通常为0，但当建立的线程不马上执行时为旗标

27 第六个参数是一个指针，指向接受执行绪ID值的变量

28 */

29 hThrd1 = CreateThread(NULL, 0 , ThreadFunc, (LPVOID) 1 , 0 , & threadId ); // 建立第一个线程

30 if (hThrd1)

31 printf( " Thread 1 执行\n " );

32

33 hThrd2 = CreateThread(NULL, 0 , ThreadFunc, (LPVOID) 2 , 0 , & threadId );

34 if (hThrd2)

35 printf( " Thread 2 执行\n " );

36

37 // Keep waiting until both calls to GetExitCodeThread succeed AND

38 // neither of them returns STILL_ACTIVE.

39 for (;;) {

40 printf( " 按任意键退出..\n " );

41 getchar();

42 // WaitForSingleObject();

43 GetExitCodeThread(hThrd1, & exitCode1); // 取得线程函数的返回值

44 GetExitCodeThread(hThrd2, & exitCode2);

45 if ( exitCode1 == STILL_ACTIVE )

46 puts( " Thread 1 正在执行状态! " );

47 if ( exitCode2 == STILL_ACTIVE )

48 puts( " Thread 2 正在执行状态! " );

49

50 if ( exitCode1 != STILL_ACTIVE && exitCode2 != STILL_ACTIVE )

51 break ;

52 }

53

54 CloseHandle(hThrd1);

55 CloseHandle(hThrd2);

56

57 printf( " Thread 1 returned %d\n " , exitCode1);

58 printf( " Thread 2 returned %d\n " , exitCode2);

59 getchar();

60 return 0 ; // EXIT_SUCCESS;

61 }

62

63 /*

64 * Take the startup value, do some simple math on it,

65 * and return the calculated value.

66 */

67 DWORD WINAPI ThreadFunc(LPVOID n) {

68 Sleep((DWORD)n * 1000 * 2 );

69 printf( " Thread %d 正在执行\n " ,n);

70 return (DWORD)n * 10 ;

71 }