#include
#include



typedef?struct?pcb{
	char?name[10];
	char?state;
	int?ntime;
	int?rtime;
	int?atime;
	struct?pcb?*next;
}PcbNode?*Pcb;

int?Time;
int?flag2flag3flag4tag;


void?insert_out（Pcb?headPcb?p1）;
void?execute（Pcb?*link）;
void?print（Pcb?*link）;

void?insert_out（Pcb?head?Pcb?p1）{
	Pcb?p2;
	p2?=?head;?
	while（p2->next!=NULL?&&?p1->atime>p2->next->atime）{
		p2?=?p2->next;?
	}?
	p1->next?=?p2->next;
	p2->next?=?p1;	
}

void?read（Pcb?headPcb?p1FILE?*fp）
{
fscanf（fp“%s\t%c\t%d\t%d\t%d\n“p1->name&p1->state&p1->ntime&p1->rtime&p1->atime）;	
insert_out（headp1）;
}


void?print（Pcb?*link）{
	int?k;
	Pcb?p;
	printf（“時(shí)間片：%d\n“Time）;
????for（k?=?0;k<4;k++）{
????	printf（“第%d隊(duì)列的情況:\n“k+1）;
????	p?=?link[k];
????	while（p->next!=NULL）{
	????	p?=?p->next;
	????	printf（“進(jìn)程:%s????運(yùn)行時(shí)間:%d?????服務(wù)時(shí)間:%d????狀態(tài):%c?????到達(dá)時(shí)間:%d\n“p->namep->rtimep->ntimep->statep->atime）;
????	}
	????
????}
	printf（“==============================================================\n\n“）;?
	
}


void?execute（Pcb?*link）{
	Pcb?pqq1tt1t2;

????if（link[0]->next!=NULL）{//第一隊(duì)列有進(jìn)程?

????if（flag2!=0）{//第2隊(duì)列有進(jìn)程在服務(wù)?
?????????????t1?=?link[1]->next;
?	?????????t?=?link[1];
?	?????????t2?=?link[1]->next->next;
	????	while（t->next!=NULL）{
	????	t=t->next;
	????	}
	????	t1->next?=?t->next;
	????	t->next?=?t1;
	????	link[1]->next?=?t2;
	????	flag2?=?0;
	????	t1->state?=?‘w‘;
	}//第2隊(duì)列有進(jìn)程在服務(wù)?
	
	else?if（flag3!=0）{//第3隊(duì)列有進(jìn)程在服務(wù)?
		??t1?=?link[2]->next;
????????????t?=?link[2];
????????????t2?=?link[2]->next->next;
	????	while（t->next!=NULL）{
	????	t=t->next;
	????	}
	????	t1->next?=?t->next;
	????	t->next?=?t1;
	????	link[2]->next?=?t2;
	????	t1->state?=?‘w‘;
	????	flag3?=?0;
		
	}?//第3隊(duì)列有進(jìn)程在服務(wù)
	
	else?if（flag4!=0）{//第4隊(duì)列有進(jìn)程在服務(wù)?
		??t1?=?link[3]->next;
????????????t2?=?link[3]->next->next;
	????	t?=?link[3];
	????	while（t->next!=NULL）{
	????	t=t->next;
	????	}
	????	t1->next?=?t->next;
	????	t->next?=?t1;

	????	link[3]->next?=?t2;
	????	t1->state?=?‘w‘;
	????	flag4?=?0;
	}//第4隊(duì)列有進(jìn)程在服務(wù)
	
????	q?=?link[0]->next;
????	link[0]->next?=?q->next;
????	if（q->rtime?ntime）{
	????	q->rtime++;
	????	q->state=‘w‘;
	????	
	????	if（q->rtime?==?q->ntime）{
	????????q->state?=?‘f‘;
	????????tag--;
	????	}
	????????
	????????else?if（q->rtime?ntime）{
	????	p?=?link[1];
	????	while（p->next!=NULL）{
	????	???p?=?p->next;
			}
	????	q->next?=?p->next;
	????	p->next?=?q;
	????????}
	????}

????}
	
	else?if（link[0]->next?==?NULL&&link[1]->next!=NULL）{//第1隊(duì)列無進(jìn)程，第2隊(duì)列有進(jìn)程?
		q?=?link[1]->next;
		
		if（q->rtime?ntime）{
			q->rtime++;
			
			if（flag2==0）
			q->state=‘r‘;
			else?if（flag2?==?1）
			q->state=‘w‘;
			
			if（q->rtime?==?q->ntime）{
				q->state?=?‘f‘;
				tag--;
				link[1]->next?=?q->next;
				if（flag2?==?1）
				flag2?=?0;				
			}
			
			else?if（q->rtime?ntime）{
				if（flag2?==?0）
				flag2?=?1;
				
				els

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????文件??????????68??2016-11-19?18:59??操作系統(tǒng)第4次實(shí)驗(yàn)\test_example.txt
?????文件????????6020??2016-12-29?22:11??操作系統(tǒng)第4次實(shí)驗(yàn)\多級(jí)反饋隊(duì)列.cpp
?????文件??????159390??2017-01-02?18:22??操作系統(tǒng)第4次實(shí)驗(yàn)\多級(jí)反饋隊(duì)列.docx
?????目錄???????????0??2017-01-02?21:09??操作系統(tǒng)第4次實(shí)驗(yàn)\