《操作系統概念》第七版中的實驗項目：生產者消費者問題。本程序中，main()函數需要三個參數：主線程休眠時間;生產者線程數；消費者線程數。各線程的休眠等待時間是隨機的。程序代碼：#include〈stdioh>#〉o#include<timeh>#include〈windows.h>#defineBUFFER_SIZE5typedefintbuffer_;itemstructv{int；i)；buffer_itembuffer[BUFFER_SIZE+1buffer_itemfront=0,re;ar=0HANDLEmutex，empty,full;intinsert_i(ebuffer_itemitem){/*insertitemintobufferreturn0ifsuccessful,otherwisereturn-1indicatinganerrorcond/tionif((rear+1弘(BUFFER_SIZE+1)==front)return1;buffer[rear=itemrear=(rear+1)%(BUFFER_SIZE+1);return0;}intremove_item(buffer_item*item){/*removeanobjectfrombufferplacingitinitemreturn0ifsuccessful,otherwisereutrn-1indicationanerrorcondition*/if(front==r)earreturn；1*item=buffeffront];front=(front+)%(BUFFER_SIZE+1);return0;DWORDWINAPIproducer(PVOIDParam){intrandlstructvdata=*(struct)Waram;srand((unsigned)time0))；while(1{Sleep(rand()%101*10WaitForSingleObjectempty,INFINITE);WaitForSingleObject(mutexINFINITE);rand1=ran();printf"producerhasproducerd%dByn%drand1datai);if(insert_itemrand1))printf("insertdatan’rrb;r!\ReleaseMutex(mutex)ReleaseSemaphore(full,NULL);}}DWORDWINAPIconsumer(PVOIDParam){intrand1;structvdat<a=structv)Param;srand((unsign)edtime(0));while(1){Sleep(rand()%101*10);WaitForSingleObject(f,ulIlNFINITE);WaitForSingleObjectmutex,INFINITE);if(remove_item&rand1))printf("removedataerr\f,);elseprintf"consumerconsumed^dBy%d\nn,rand1,data);<ReleaseMutex(mutex);ReleaseSemaphore(empty,1,NULL);}}intmain(intargxhar*argv[]{/*Getcommandlineargumentsargv)1(thenumberofproducerthreads),argtAh/numberofconsumerthread,sargv[3](sleepti)e*//*Initializebufferintsleeptime,pnun$num;int*ThreadIdP*ThreadIdS,i;struct*countp*counts;HANDLE*ThreadHandleP,*ThreadHandleS;sleeptime=atoi(argv)[[]pnum=atoi(argv[2]);snum=atoi(argv[3]);/*srand(time(NULL));sleeptime=9;0pnum=3;snum=3;*/ThreadHandleP=(HANDLE*)malloc(pnum*sizeof(HANDLE));ThreadHandleS=(HANDLE*)malloc(snum*sizeof(HANDLE));ThreadIdP=(int*)mallOpnum*sizeofin));ThreadIdS=(int*)malloc(pnum*sizeoffint));mutex=CreateMutex(NULL,FALSE,NULL);empty=CreateSemaphore(NULL,BUFFER_SIZE,BUFFER_SIZE,NULL);full=CreateSemaphore(NULL0,BUFFER_SIZE+1,NULL);/*Createproducerthread(s)countp=(structv)malloc((pnum+1)*sizeof(struqtv))counts=(structv*)malloc((sn)um*+1sizeo(fstruct))v;for(i=0i<pnum;i++){countp[i+L]i=i+1ThreadHandleP[i]=CreateThreaNULL,0,producer&countpi+1],0,&ThreadIdP[i;])}/*Createconsumerthread(s)*/for(i=0;i〈snum;i++){counts[i+1]。i=i+1;ThreadHandleS[i]=CreateThreaNULL,0,consumer,&count[i+1],0,&ThreadIdS[i])}/*Sleep*/Sleep(sleepti)m;e/*Exi*t/return0;#include"stdafx.h"#include〈stdio。h〉#include〈stdlib.h>#include〈time。h>#include<windows。h>#defineBUFFER-SIZE5typedefintbuffer-item;structv{inti;)；buffer-itembuffer[BUFFER-SIZE+1];buffer-itemfront=0,rear=0;HANDLEmutex,empty,full;intinsert-item(buffer-itemitem)(/*insertitemintobufferreturn0ifsuccessful,otherwisereturn-1indicatinganerrorcondition*/if((rear+1)%(BUFFER-SIZE+1)==front)return1；buffer[rear]=item;rear=(rear+1)%(BUFFER-SIZE+1);return0;}intremove-item(buffer-item*item){/*removeanobjectfrombufferplacingitinitemreturn0ifsuccessful,otherwisereutrn-1indicationanerrorcondition*/if(front==rear)return1;*item=buffer[front];front=(front+1)%(BUFFER-SIZE+1);return0;)DWORDWINAPIproducer(PVOIDParam){intrandl;structvdata=*(structv*)Param;srand((unsigned)time(0));while(1){Sleep(rand()%101*10);WaitForSingleObject(empty,INFINITE);WaitForSingleObject(mutex,INFINITE);rand1=rand();printf("producerhasproducerd%dBy%d\n”，rand1,data.i);if(insert_item(rand1))printf("insertdataerror!\n");ReleaseMutex(mutex);ReleaseSemaphore(full,1,NULL);})DWORDWINAPIconsumer(PVOIDParam)(intrand1;structvdata=*(structv*)Param;srand((unsigned)time(0));while(1){Sleep(rand()%101*10);WaitForSingleObject(full,INFINITE);WaitForSingleObject(mutex,INFINITE);if(remove_item(&rand1))printf("removedataerror!\n");elseprintf("consumerconsumed%dBy%d\n",rand1,data。i);ReleaseMutex(mutex);ReleaseSemaphore(empty,1,NULL);)}intmain(intargc,char*argv[])(/*Getcommandlineargumentsargv[1])(thenumberofproducerthreads),argv[2](thenumberofconsumerthreads),argv[3](sleeptime)*//*Initializebuffer*/intsleeptime,pnum,snum;DWORD*ThreadIdP,*ThreadIdS,i;structv*countp,*counts;HANDLE*ThreadHandleP,*ThreadHandleS;/*sleeptime=atoi(argv[1]);pnum=atoi(argv[2]);snum=atoi(argv[3]);*///srand(time(NULL));sleeptime=90;pnum=3;snum=3;ThreadHandleP=(HANDLE*)malloc(pnum*sizeof(HANDLE));ThreadHandleS=(HANDLE*)malloc(snum*sizeof(HANDLE));ThreadIdP=(DWORD*)malloc(pnum*sizeof(DWORD));ThreadIdS=(DWORD*)malloc(pnum*sizeof(DWORD));mutex=CreateMutex(NULL,FALSE,NULL);empty=CreateSemaphore(NULL,BUFFER_SIZE,BUFFER_SIZE,NULL);full=CreateSemaphore(NULL,0,BUFFER_SIZE+1,NULL);/*Createproducerthread(s)*/countp=(structv*)malloc((pnum+1)*sizeof(structv));counts=(structv*)malloc((snum+1)*sizeof(structv));for(i=0;i<pnum;i++){countp[i+1].i=i+1;ThreadHandleP[i]=CreateThread(NULL,0,producer,&countp[i+1],0,&ThreadIdP[i]);)/*Createconsumerthread(s)*/for(i=0;i〈snum;i++){counts[i+1].i=i+1;ThreadHandleS[i]=CreateThread(NULL,0,consumer,&counts[i+1],0,&ThreadIdS[i]);)/*Sleep*/Sleep(sleeptime);/*Exit*/return0;consitmepconBunecl32240By2pi'oclucephasprortucei'rt12873By3consnmcrconsuniccl31438B