不定個數的C++函數指針

關於多線程下利用vector保存函數指針並調用的方法，這是一個最簡單的函數指針調用實例，大家可以看到這樣對於處理一些第一時間處理數據的業務非常合適，這樣處理的實時性非常好，當然而且可以多個處理函數來處理數據，也可以將mytest這個class 封裝起來，是外部使用的人不必關心內部如何產生數據的。外部直接

1. struct mystuct
2. {
3. int myInt;
4. char myStr[100];
5. };
8. class mytest
9. {
10. private:
11. static unsigned long WINAPI TestThread(LPVOID lpvoid);
14. volatile unsigned long threadRun;
15. int CreateTestThread();
16. vector<void (*)(mystuct *pdata)> functionvector;
17. HANDLE m_ExitEvent;
18. public:
19. mytest(void){}
20. ~mytest(void){}
21. int AddFunctionAddr(void (*_ProcesseFunction)(mystuct *pdata));
22. void initialize();
23. void shutdown();
26. };
29. void mytest::initialize()
30. {
31. CreateTestThread();
32. }
33. void mytest::shutdown()
34. {
35. InterlockedExchange(&threadRun,0);
36. WaitForSingleObject(m_ExitEvent,INFINITE);
37. ResetEvent(m_ExitEvent);
38. CloseHandle(m_ExitEvent);
39. }
40. int mytest::AddFunctionAddr(void (*_ProcesseFunction)(mystuct *pdata))
41. {
42. functionvector.push_back(_ProcesseFunction);
43. return 0;
44. }
47. unsigned long WINAPI mytest::TestThread(LPVOID lpvoid)
48. {
49. mytest* pMytest = (mytest*)lpvoid;
50. int i =15;
51. while(1)
52. {
53. mystuct _mystuct;
54. memset(_mystuct.myStr,0,100);
55. memcpy(_mystuct.myStr,"月·小軒",sizeof("月·小軒"));
56. _mystuct.myInt=i;
59. if (0==pMytest->threadRun)
60. {
61. break;
62. }
65. for (int i=0;i<(int)(pMytest->functionvector.size());i++)
66. {
67. if (NULL!=(pMytest->functionvector[i]))
68. {
69. (*(pMytest->functionvector[i]))(&_mystuct);
70. }
71. }
72. i++;
73. Sleep(1000);
74. }
75. SetEvent(pMytest->m_ExitEvent);
76. return 0;
77. }
80. int mytest::CreateTestThread()
81. {
82. m_ExitEvent= CreateEvent(NULL,TRUE,FALSE,L"test_Eixt");
83. InterlockedExchange(&threadRun,1);
88. DWORD dwthreadID;
89. HANDLE h_Handle= CreateThread(NULL,NULL,TestThread,this,0,&dwthreadID);
90. if (NULL==h_Handle)
91. {
92. CloseHandle(h_Handle);
93. return 1;
94. }
95. CloseHandle(h_Handle);
96. return 0;
97. }
100. void printFunction1(mystuct* data)
101. {
102. int resultNumber = data->myInt;
103. printf("%d\t",resultNumber);
104. }
105. void printFunction2(mystuct* data)
106. {
107. printf("%s\t",data->myStr);
108. }
111. void main()
112. {
113. mytest* _mytest = new mytest();
114. _mytest->AddFunctionAddr(printFunction1);
115. _mytest->AddFunctionAddr(printFunction2);
116. _mytest->initialize();
119. system("pause");
120. _mytest->shutdown();
121. }