線程的創(chuàng)建和撤銷(xiāo)

1、精選優(yōu)質(zhì)文檔-傾情為你奉上實(shí)驗(yàn) 1 線程的創(chuàng)建與撤銷(xiāo)一、設(shè)計(jì)人員相關(guān)信息1. 設(shè)計(jì)者姓名： 學(xué)號(hào)： 班級(jí)： 通過(guò)本實(shí)驗(yàn)熟悉 Windows 系統(tǒng)提供的線程創(chuàng)建與撤銷(xiāo)等系統(tǒng)調(diào)用，掌握 Windows 系統(tǒng)環(huán)境下線程的創(chuàng)建與撤銷(xiāo)方法。三、實(shí)驗(yàn)內(nèi)容 1熟悉開(kāi)發(fā)環(huán)境 Visual C+ 6.0； 2Windows系統(tǒng)環(huán)境下線程的創(chuàng)建與撤銷(xiāo)方法； 3利用 2 個(gè)線程模擬火車(chē)票銷(xiāo)售系統(tǒng)。四、實(shí)驗(yàn)準(zhǔn)備知識(shí)1線程創(chuàng)建函數(shù)HANDLE CreateThread( LPSECURITY_ATTRIBUTES lpThreadAttrib SIZE_T dwStackSize, LPTHREAD_START_ROU

2、TINE lpStartAddr LPVOID lpParameter, DWORD dwCreationFlags, LPDWORD lpThreadId );2線程撤銷(xiāo)函數(shù)VOID ExitThread( DWORD dwExitCode );3線程終止函數(shù)BOOL TerminateThread( HANDLE hThread, DWORD dwExitCode );4. 線程掛起函數(shù)VOID Sleep( DWORD dwMilliseconds );5. 關(guān)閉句柄函數(shù)BOOL CloseHandle( HANDLE hObject );五、實(shí)驗(yàn)步驟及結(jié)果1. Windows系統(tǒng)環(huán)境下

3、線程的創(chuàng)建與撤銷(xiāo)方法。該程序段在主線程中調(diào)用 CreateThread( )創(chuàng)建 2 個(gè)子線程，并在子線程中顯示類(lèi)似“Thread is running !”等字樣。其主要代碼如下：#include <windows.h> #include <iostream.h> int index = 0; DWORD WINAPI Thread1Proc( LPVOID lpParameter ); DWORD WINAPI Thread2Proc( LPVOID lpParameter ); int main() / 主線程 HANDLE hThread1; HANDLE hT

4、hread2; hThread1 = CreateThread(NULL,0,Thread1Proc,NULL,0,NULL); / 創(chuàng)建線程1 hThread2 = CreateThread(NULL,0,Thread2Proc,NULL,0,NULL); / 創(chuàng)建線程2CloseHandle(hThread1); / 關(guān)閉句柄 CloseHandle(hThread2); while(index+<1000) cout<<"main thread is running!"<<endl; ExitThread(0); / 撤銷(xiāo)線程，參數(shù)0表示

5、要撤銷(xiāo)進(jìn)程中的所有線程;缺省亦可 return 0; DWORD WINAPI Thread1Proc( LPVOID lpParameter ) while(index+<1000) cout<<"Thread 1 is running!"<<endl; return 0; DWORD WINAPI Thread2Proc( LPVOID lpParameter ) while(index+<1000) cout<<"Thread 2 is running!"<<endl; return 0;

6、 2.利用 2 個(gè)線程模擬火車(chē)票銷(xiāo)售系統(tǒng) 1。該程序段利用上例代碼實(shí)現(xiàn)2個(gè)線程模擬火車(chē)票銷(xiāo)售系統(tǒng)，其主要代碼如下所示：#include <windows.h> #include <iostream.h> int tickets = 100;DWORD WINAPI Thread1Proc( LPVOID lpParameter ); DWORD WINAPI Thread2Proc( LPVOID lpParameter ); int main() / 主線程 HANDLE hThread1; HANDLE hThread2; hThread1 = CreateThre

7、ad(NULL,0,Thread1Proc,NULL,0,NULL); / 創(chuàng)建線程1 hThread2 = CreateThread(NULL,0,Thread2Proc,NULL,0,NULL); / 創(chuàng)建線程2 CloseHandle(hThread1); / 關(guān)閉句柄 CloseHandle(hThread2); Sleep(5000); ExitThread(0); / 撤銷(xiāo)線程，參數(shù)0表示要撤銷(xiāo)進(jìn)程中的所有線程;缺省亦可return 0; DWORD WINAPI Thread1Proc( LPVOID lpParameter ) while(TRUE) if(tickets>

8、;0) cout<<"Thread 1 sell ticket : "<< tickets- <<endl; else break; return 0; DWORD WINAPI Thread2Proc( LPVOID lpParameter ) while(TRUE) if(tickets>0) cout<<"Thread 2 sell ticket : "<< tickets- <<endl; else break; return 0; 上圖結(jié)果顯示Thread 1售出了兩

9、張代號(hào)為98的票，所以存在隱患，需要改進(jìn)。3.利用 2 個(gè)線程模擬火車(chē)票銷(xiāo)售系統(tǒng) 2。該段程序亦是實(shí)現(xiàn)利用 2 個(gè)線程模擬火車(chē)票銷(xiāo)售系統(tǒng)，其主要代碼如下所示。其主要作用在于將上例中可能出現(xiàn)的隱患展現(xiàn)出來(lái)。#include <windows.h> #include <iostream.h> int tickets = 100; DWORD WINAPI Thread1Proc( LPVOID lpParameter ); DWORD WINAPI Thread2Proc( LPVOID lpParameter ); int main() / 主線程 HANDLE hThr

10、ead1; HANDLE hThread2; hThread1 = CreateThread(NULL, 0, Thread1Proc, NULL, 0, NULL); / 創(chuàng)建線程1 hThread2 = CreateThread(NULL, 0, Thread2Proc, NULL, 0, NULL); / 創(chuàng)建線程2 CloseHandle(hThread1); / 關(guān)閉句柄 CloseHandle(hThread2); Sleep(5000); ExitThread(0); / 撤銷(xiāo)線程，參數(shù)0表示要撤銷(xiāo)進(jìn)程中的所有線程;缺省亦可 return 0; DWORD WINAPI Thre

11、ad1Proc( LPVOID lpParameter ) while(TRUE) if(tickets>0) Sleep(1); cout<<"Thread 1 sell ticket : "<< tickets- <<endl; else break; return 0; DWORD WINAPI Thread2Proc( LPVOID lpParameter ) while(TRUE) if(tickets>0) Sleep(1); cout<<"Thread 2 sell ticket : "<< tickets- <<