#include?“windows.h“
#include?
#include?
#include?

const?unsigned?short????size_of_buffer?=?1;?//緩沖區(qū)長(zhǎng)度不能是10，為了滿(mǎn)足讀者全讀完了寫(xiě)者才能寫(xiě)的要求
?short?WriteID?=?1;			
?short?ReadID?=?1;			
?short?in?=?0;	//產(chǎn)品進(jìn)緩沖區(qū)時(shí)的緩沖區(qū)下標(biāo)			
?short?out?=?0;	//產(chǎn)品出緩沖區(qū)時(shí)的緩沖區(qū)下標(biāo)		

int?gData[??size_of_buffer];//緩沖區(qū)是個(gè)循環(huán)隊(duì)列
bool?continu?=?true;??//控制程序結(jié)束
HANDLE?g_hMutex;		//用于線(xiàn)程間的互斥
HANDLE?g_hFullSemaphore;//當(dāng)緩沖區(qū)滿(mǎn)時(shí)使寫(xiě)者等待
HANDLE?g_hEmptySemaphore;//當(dāng)緩沖區(qū)空時(shí)使讀者等待

double?eRandom（int?upLimit）;
typedef?struct
{	int?data;
}INTEGER;

//寫(xiě)者
DWORD?WINAPI?Writer（LPVOID?lppara）
{
????while（continu）{
????????WaitForSingleobject（g_hFullSemaphoreINFINITE）;//可在指定時(shí)間內(nèi)等待指定對(duì)象為可用
????????WaitForSingleobject（g_hMutexINFINITE）;
		int?tNo=（（INTEGER*）lppara）->data;
????????if（WriteID?<=?10）{
			//cout?<			printf（“?寫(xiě)者?%d?寫(xiě)入?%d??\n“tNo+1WriteID）;
			gData[in]?=?WriteID;
			in?=?（in+1）%??size_of_buffer;
			WriteID++;
		}else?return?-1;
???????int?sleepTime=20*（int）eRandom（50+tNo）;
	???Sleep（sleepTime）;
????????ReleaseMutex（g_hMutex）;
????????ReleaseSemaphore（g_hEmptySemaphore1NULL）;
????}
????return?0;
}

//讀者
DWORD?WINAPI?Reader（LPVOID?lppara）
{
????while（continu）{
????????WaitForSingleobject（g_hEmptySemaphoreINFINITE）;
????????WaitForSingleobject（g_hMutexINFINITE）;
		int?tNo=（（INTEGER*）lppara）->data;
????????ReadID?=?gData[out];
		out?=?（out+1）%??size_of_buffer;
		//cout?<		printf（“?讀者?%d?讀取?%d??\n“tNo+1ReadID）;
???????int?sleepTime=10*（int）eRandom（50+tNo）;
		Sleep（sleepTime）;
????????ReleaseMutex（g_hMutex）;
????????ReleaseSemaphore（g_hFullSemaphore1NULL）;
????}
????return?0;
}

int?main（）{
	//創(chuàng)建各個(gè)互斥信號(hào)
????g_hMutex?=?CreateMutex（NULLFALSENULL）;
????g_hFullSemaphore?=?CreateSemaphore（NULL??size_of_buffer??size_of_bufferNULL）;
????g_hEmptySemaphore?=?CreateSemaphore（NULL0??size_of_bufferNULL）;

	const?unsigned?short?WRITER_COUNT?=?5;			//寫(xiě)者的個(gè)數(shù)
????const?unsigned?short?READER_COUNT?=?3;			//讀者的個(gè)數(shù)

	const?unsigned?short?THREADS_COUNT?=?WRITER_COUNT?+?READER_COUNT;		//線(xiàn)程總數(shù)

	HANDLE?hThreads[THREADS_COUNT];					//各線(xiàn)程的handle
????DWORD?writerID[WRITER_COUNT];					//寫(xiě)者線(xiàn)程的標(biāo)識(shí)符
????DWORD?readerID[READER_COUNT];					//讀者線(xiàn)程的標(biāo)識(shí)符

	//創(chuàng)建寫(xiě)者線(xiàn)程
	INTEGER*?tmpInt;
????for?（int?i=1;i?		tmpInt=（INTEGER*）malloc（sizeof（INTEGER））;
		tmpInt->data=i;
????????hThreads[i]=CreateThread（NULL0WritertmpInt0&writerID[i]）;
		//CreateThread（）:在調(diào)用進(jìn)程的地址空間上創(chuàng)建一個(gè)線(xiàn)程
????????if?（hThreads[i]==NULL）
			return?-1;
????}

	//創(chuàng)建消費(fèi)者線(xiàn)程
????for?（int?i=1;i?		tmpInt=（INTEGER*）malloc（sizeof（INTEGER））;
		tmpInt->data=i;
????????hThreads[WRITER_COUNT+i]=CreateThread（NULL0ReadertmpInt0&readerID[i]）;
????????if?（hThreads[i]==NULL）
			return?-1;
????}

	while（continu）{
????????if（getchar（））{?
			//按回車(chē)后終止程序運(yùn)行
????????????continu?=?false;
????????}
????}

????re

?屬性????????????大小?????日期????時(shí)間???名稱(chēng)
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?????文件???????3413??2010-10-09?22:03??操作系統(tǒng)實(shí)驗(yàn)一實(shí)驗(yàn)報(bào)告-李旦蘭\w_and_r.cpp

?????文件?????261632??2010-10-10?13:57??操作系統(tǒng)實(shí)驗(yàn)一實(shí)驗(yàn)報(bào)告-李旦蘭\操作系統(tǒng)實(shí)驗(yàn)一實(shí)驗(yàn)報(bào)告.doc

?????目錄??????????0??2010-10-10?13:59??操作系統(tǒng)實(shí)驗(yàn)一實(shí)驗(yàn)報(bào)告-李旦蘭

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???????????????265045????????????????????3