操作系統(tǒng)原理實(shí)驗(yàn)報(bào)告05

學(xué)號(hào)姓名專(zhuān)業(yè)、班實(shí)驗(yàn)地點(diǎn)指導(dǎo)教師實(shí)驗(yàn)時(shí)間實(shí)驗(yàn)序號(hào)：5操作系統(tǒng)原理》實(shí)驗(yàn)報(bào)告實(shí)驗(yàn)項(xiàng)目名稱(chēng)：線(xiàn)程的同步一、實(shí)驗(yàn)?zāi)康募耙筮M(jìn)一步掌握Windows系統(tǒng)環(huán)境下線(xiàn)程的創(chuàng)建與撤銷(xiāo)。熟悉Windows系統(tǒng)提供的線(xiàn)程同步API。使用Windows系統(tǒng)提供的線(xiàn)程同步API解決實(shí)際問(wèn)題。二、實(shí)驗(yàn)設(shè)備(環(huán)境)及要求Windows操作系統(tǒng)與VisualC++開(kāi)發(fā)環(huán)境三、實(shí)驗(yàn)內(nèi)容與步驟完成主、子兩個(gè)線(xiàn)程之間的同步，要求子線(xiàn)程先執(zhí)行。在主線(xiàn)程中使用系統(tǒng)調(diào)用CreateThread()創(chuàng)建一個(gè)子線(xiàn)程。主線(xiàn)程創(chuàng)建子線(xiàn)程后進(jìn)入阻塞狀態(tài)，直到子線(xiàn)程運(yùn)行完畢后喚醒主線(xiàn)程。<參考程序>#include"stdafx.h"#includevstdio?h>#includevwindows.h>staticHANDLEhi;〃線(xiàn)程句柄staticHANDLEhHandle1=NULL;〃信號(hào)量句柄voidfunc();intmain(intargc,char*argv[]){intnRetCode=0;DWORDdwThreadID1;DWORDdRes,err;hHandlel=代碼1〃創(chuàng)建一個(gè)信號(hào)量if(hHandle1==NULL)printf("SemaphoreCreateFail!\n");elseprintf("SemaphoreCreateSuccess!\n");hHandlel=代碼2〃打開(kāi)信號(hào)量if(hHandle1==NULL)printf("SemaphoreOpenFail!\n");elseprintf("SemaphoreOpenSuccess!\n");h1=CreateThread((LPSECURITY_ATTRIBUTES)NULL,0,(LPTHREAD_START_ROUTINE)func,(LPVOID)NULL,0,&dwThreadID1);〃創(chuàng)建子線(xiàn)程if(h1==NULL)printf("Thread1createFail!\n");elseprintf("Thread1createSuccess!\n");dRes=代碼3〃主線(xiàn)程等待子線(xiàn)程結(jié)束err=GetLastError();printf("WaitForSingleObjecterr=%d\n",err);if(dRes==WAIT_TIMEOUT)printf("TIMEOUT!dRes=%d\n",dRes);elseif(dRes==WAIT_OBJECT_0)printf("WAIT_OBJECT!dRes=%d\n",dRes);elseif(dRes==WAIT_ABANDONED)printf("WAIT_ABANDONED!dRes=%d\n",dRes);elseprintf("dRes=%d\n",dRes);CloseHandle(h1);CloseHandle(hHandle1);ExitThread(0);returnnRetCode;

voidfunc(){BOOLrc;DWORDerr;printf("NowInThread!\n");rc=代碼4〃子線(xiàn)程喚醒主線(xiàn)程err=GetLastError();printf("ReleaseSemaphoreerr=%d\n",err);if(rc==0)printf("SemaphoreReleaseFail!\n");elseprintf("SemaphoreReleaseSuccess!rc=%d\n",rc);}以上程序完成了主、子兩個(gè)線(xiàn)程執(zhí)行先后順序的同步關(guān)系，填充代碼并思考以下問(wèn)題：如何實(shí)現(xiàn)多個(gè)線(xiàn)程的同步？若允許子線(xiàn)程執(zhí)行多次后主線(xiàn)程再執(zhí)行，又如何設(shè)置信號(hào)量的初值。四、實(shí)驗(yàn)結(jié)果與數(shù)據(jù)處理dwukdawlnreaaiDi;DWORDdRes,err;c「*C:\vc\t2\Debug\1.exe*SemaphoreCreateSuccess*SemaphoreOpenSuccess*ThreadlcreateSuccess*NowInThread*ReleaseSemaphoreerr=6SemaphoreReleaseFail*WaitForSingleObjecterr=0WAIT_OBJEGT?dRes=0c「*C:\vc\t2\Debug\1.exe*SemaphoreCreateSuccess*SemaphoreOpenSuccess*ThreadlcreateSuccess*NowInThread*ReleaseSemaphoreerr=6SemaphoreReleaseFail*WaitForSingleObjecterr=0WAIT_OBJEGT?dRes=0Pressanykeytocontinue,elseprintf("SemaphoreCreateSuccess?\n");hHandlel=OpenSemaphore(SEMAPHORE_MODIFV_STATE,if(hHandle1==NULL)printf("SemaphoreOpenFaielseprintf("SemaphoreOpenSuccess?\n");h1=CreateThread((LPSECURITY_ATTRIBUTES)NULL,0,(LPTHREADSTARTROUTINE)Func,(LPUOID)NULL,—0,&dwThreadID1);iF(h1==NULL)printF("Thread1createFail?\n");elseprintF("Thread1createSuccess?\n");dRes=WaitForSingle0bject(h1,100000);err=GetLastError();printF("WaitForSingleObjecterr=^d\n",err);if(dRes==WAITTIMEOUT)printF("TIMEOUT?dReelseif(dRes==WAIT_OBJECT_O)printF("WfiIT_OBJEe