#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#define?N_SEC?20

struct?sembuf?sops[4];
	static?union?semun?
		{
?????????	int?val;
?????????	struct?semid_ds?*buf;
?????????	ushort?*?array;
?????		}init_v;

int?BeginWaiter（int?semsint?num）
{
??	?int?id=-1;
??	?if（!（id=fork（）））//child
	{
	???while（1）
		{
	????struct?sembuf?op={2-10};
	?????if（-1==semop（sems&op1））
			?exit（0）;
		?op.sem_num=3;op.sem_op=1;
		?if（-1==semop（sems&op1））
			?exit（0）;
		?///service
		?int?random=1+（int）（20.0*rand（）/（RAND_MAX*1.0））;
		?printf（“\n*****\n%d?is?on?dutyserve?time=%d\n***********\n“num20+random）;
		?sleep（10+random）;
	???}
	}else
		return?id;
}

int?main（int?argc?char?*argv[]）
{
	printf（“parent?id=%d\n“getpid（））;
	int?sems=semget（IPC_PRIVATE50666）;
	union?semun?arg;
	unsigned?short?init_v[5]={120000};
	arg.array=init_v;
	semctl（sems0SETALLarg）;
	char?custom[100]=““;
	////////////////////////
	srand（0）;
	int?s1=BeginWaiter（sems0）;
	int?s2=BeginWaiter（sems1）;
	printf（“Waiters?are:%d%d“s1s2）;
	//////////////
	while（1）
	{
		printf（“Welcome!please?input?you?name:“）;
		scanf（“%s“custom）;
		if（!strcmp（custom“exit“））
		{
		???semctl（sems0IPC_RMIDarg）;
		???kill（SIGKILLs1）;
		???kill（SIGKILLs2）;
		???exit（0）;
		}
		if（!fork（））//child
		{
		??struct?sembuf?ops={0-10};
??????????semop（sems&ops1）;//p?mutexalternative
		??ops.sem_num=4ops.sem_op=1;
		??semop（sems&ops/*（struct?sembuf*）&{410}*/1）;//get?ticket
		??ops.sem_num=0;ops.sem_op=1;
		??semop（sems&ops/*（struct?sembuf*）&{010}*/1）;//V?mutex.alternative
		??/////////////////////
		???ops.sem_num=1;ops.sem_op=-1;
		??semop（sems&ops/*（struct?sembuf*）&{1-10}*/1）;//compete?for?seat
		??int?seats=semctl（sems1GETVALarg）;
		??printf（“\nThere?are?%d?seates?remained\n“seats）;
		??////////////////
		???ops.sem_num=2;ops.sem_op=1;
		??semop（sems&ops/*（struct?sembuf*）&{210}*/1）;//wake?waiter?up
		???ops.sem_num=3;ops.sem_op=-1;
		??semop（sems&ops/*（struct?sembuf*）&{3-10}*/1）;//wait?for?called?for
???????????ops.sem_num=1;ops.sem_op=1;
		??semop（sems&ops/*（struct?sembuf*）&{110}*/1）;//release?seat;
		??//get?service
		??printf（“\n**********\ncustom:%s\n**************\\n“custom）;
		??exit（0）;
		?
		}
	}
	

}

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

?????文件???????2506??2012-09-08?17:11??源程序\bb.c

?????文件???????2506??2012-09-08?18:16??源程序\借鑒版.txt

?????文件???????3035??2012-09-08?18:27??源程序\真我版.txt

?????文件???????2488??2012-06-18?14:58??bb.c

?????文件???????2968??2012-06-12?12:56??shiley.txt.txt

?????文件???????3214??2012-06-18?11:23??shiley-updated.txt

?????文件??????35840??2012-06-12?17:07??UNIX高級編程公開答辯記錄表.doc

?????文件??????20148??2012-06-18?11:36??流程圖.doc

?????文件??????14336??2018-08-08?14:56??人員分工描述模板.doc

?????文件?????194048??2018-08-08?14:55??銀行叫號排隊系統-答辯.ppt

?????文件?????109056??2018-08-08?14:48??銀行排隊叫號模擬系統_實驗報告及模版-b.doc

?????文件??????28899??2012-06-19?13:19??銀行排隊系統需求分析.doc

?????目錄??????????0??2012-07-01?16:12??源程序

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

???????????????419044????????????????????13