#include?
#include?
#include?
#include?
#include?

#define?SEM_EMPTY?0
#define?SEM_FULL?1
#define?SEM_MUTEX?2
#define?KEY?3
#define?SEM_KEY?4

void?P（int?semid?int?sem_num）;
void?V（int?semid?int?sem_num）;

int?main（int?argcchar?*?argv[]）
{
????int?i;
????int?shmidsemid;
????int?*pBuf?=?NULL*output;

????//打開共享內存
????shmid?=?shmget（KEY?sizeof（int）*4?0）;
????pBuf?=?（int*）shmat（shmid?0?0）;
????output?=?pBuf;

????if（pBuf==NULL）
????????printf（“共享內存附加失敗!\n“）;

????//創建信號量
????semid?=?semget（SEM_KEY3?IPC_CREAT|0660）;

????for（i=0;?i<4;?i++）
????{
????????P（semidSEM_FULL）;?????//相當于P（SEM_FULL）申請讀取緩沖區的數據
????????P（semidSEM_MUTEX）;????//相當于P（SEM_MUTEX）申請訪問緩沖區

????????//在緩沖區中讀取數據將1置為0
????????output?=?pBuf;
		while（（*output）==0）
		{
			output++;
		}
		（*output）=0;

		//獲取當前系統時間
????????struct?timeval?curtime;
		gettimeofday（&curtimeNULL）;

????????printf（“消費者%s在緩沖區中讀取數據，讀取時間為：%ld:%ld\n“
			argv[0]curtime.tv_seccurtime.tv_usec）;
		printf（“此時，緩沖區的狀態為:\n“）;
		printf（“[?%d?][?%d?][?%d?]\n“*（pBuf）*（pBuf+1）*（pBuf+2））;


		V（semidSEM_MUTEX）;?????//相當于V（SEM_MUTEX）釋放信號量SEM_MUTEX
		V（semidSEM_EMPTY）;?????//相當于V（SEM_EMPTY）釋放信號量SEM_EMPTY

		//隨機等待一段時間
		int?time?=?random（）%5;
		sleep（time）;
????}
????return?0;
}

//P操作
void?P（int?semid?int?sem_num）
{
????struct?sembuf?sops;
????sops.sem_num=sem_num;
????sops.sem_op=-1;
	sops.sem_flg=0;
????semop（semid?&sops?1）;
}

//V操作
void?V（int?semid?int?sem_num）
{
????struct?sembuf?sops;
????sops.sem_num=sem_num;
????sops.sem_op=1;
	sops.sem_flg=0;
????semop（semid?&sops?1）;
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????1810??2011-04-07?19:21??消費者生產者\Linux\consumer.c

?????文件???????1192??2011-04-07?19:35??消費者生產者\Linux\main.c

?????文件???????1778??2011-04-07?19:19??消費者生產者\Linux\producer.c

?????文件???????7764??2011-04-11?08:39??消費者生產者\Windows\ConsumerAndProducer.cpp

?????文件??????32768??2011-04-07?19:56??消費者生產者\Windows\ConsumerAndProducer.exe

?????文件?????799232??2011-04-14?19:06??消費者生產者\實驗報告.doc

?????目錄??????????0??2011-04-14?19:06??消費者生產者\Linux

?????目錄??????????0??2011-04-14?19:06??消費者生產者\Windows

?????目錄??????????0??2011-04-14?19:07??消費者生產者

-----------?---------??----------?-----??----

???????????????844544????????????????????9