1. roque.h
2. roque.c
3. roque_test.c
4. makefile
5. output
/*
* * Copyright (c) 2006 * chenzhixin, [email protected] 2006.12.7 * * Permission to use,copy,modify,distribute and sell this software * and its documentation for any purpose is hereby granted without fee, * provided that the above copyright notice appear in all copies and * that both that copyright notice and this permission notice appear * in supporting documentation. chenzhixin makes no * representations about the suitability of this software for any * purpose. It is provided "as is" without express or implied warranty.
*/
#ifndef __ROQUE_H#define __ROQUE_H/* * this round-robin queue is implement with a static array * */#ifdef _cplusplusextern "C" {#endiftypedef int node_t;
typedef struct __roque_t{
typedef node_t* base; int max_size;/*max length of queue*/ int head; int tail;
}roque_t;/*init a roque with the max length of queue,per node's size*/int roque_init(roque_t* roque,int length);void roque_destory(roque_t* roque);void roque_clear(roque_t* roque);int roque_size(roque_t* roque);int roque_max_size(roque_t* roque);int roque_is_empty(roque_t* roque);/*get the head of roque*/node_t* roque_peek_head(roque_t* roque);node_t* roque_peek_tail(roque_t* roque);node_t* roque_find(roque_t* roque,node_t* node);int roque_push(roque_t* roque,node_t* node);int roque_pop(roque_t* roque,node_t* node);void roque_traverse(roque_t* roque,void (*visit)(node_t* node));#ifdef _cplusplus}#endif#endif//__ROQUE_H/* * * Copyright (c) 2006 * chenzhixin, [email protected] 2006.12.7 * * Permission to use,copy,modify,distribute and sell this software * and its documentation for any purpose is hereby granted without fee, * provided that the above copyright notice appear in all copies and * that both that copyright notice and this permission notice appear * in supporting documentation. chenzhixin makes no * representations about the suitability of this software for any * purpose. It is provided "as is" without express or implied warranty. */#include <stdlib.h>#include <stdio.h>#include "roque.h"int roque_init(roque_t* roque,int length){ roque->max_size=length+1; roque->base=(node_t*)malloc((roque->max_size)*sizeof(node_t)); if(!roque->base)return -1; roque->head=roque->tail=0; return 0; }void roque_distroy(roque_t* roque){ free(roque); }void roque_clear(roque_t* roque){ roque->head=roque->tail=0;}int roque_size(roque_t* roque){ return (roque->tail-roque->head+roque->max_size)%roque->max_size;}int roque_max_size(roque_t* roque){ return roque->max_size-1;}int roque_is_empty(roque_t* roque){ return roque->head==roque->tail;}node_t* roque_peek_head(roque_t* roque){ return &(roque->base[roque->head]);}node_t* roque_peek_tail(roque_t* roque){ return &(roque->base[roque->tail]);}node_t* roque_find(roque_t* roque,node_t* node){ int index=roque->head; while(index<roque->tail){ if(*node==roque->base[index])return &(roque->base[index]); index++; } return NULL; }int roque_push(roque_t* roque,node_t* node){ if((roque->tail+1)%roque->max_size==roque->head)return -1;/*the queue is full*/ roque->base[roque->tail]=*node; roque->tail++; return 0;}int roque_pop(roque_t* roque,node_t* node){ if(roque_is_empty(roque))return -1; if(node)*node=roque->base[roque->head++]; else roque->head++; return 0;}void roque_traverse(roque_t* roque,void (*visit)(node_t* node)){ int index=roque->head; while(index<roque->tail){ visit(&(roque->base[index])); index++; }}/* * * Copyright (c) 2006 * chenzhixin, [email protected] 2006.12.7 * * Permission to use,copy,modify,distribute and sell this software * and its documentation for any purpose is hereby granted without fee, * provided that the above copyright notice appear in all copies and * that both that copyright notice and this permission notice appear * in supporting documentation. chenzhixin makes no * representations about the suitability of this software for any * purpose. It is provided "as is" without express or implied warranty. */#include <stdlib.h>#include <stdio.h>#include <string.h>#include "roque.h"/* * roque_test.c * make a mode for : * i have 10 ubuntu dapper disks ,i can borrow one to anyone need it, * first come first borrow and return to me after install the ubuntu */void roque_print(node_t* node);static roque_t roque;static int disk_count=10;int main(int argc, char** argv){ int i=0; char name[20]="ubuntuer"; roque_init(&roque,disk_count); /*borrow disks to someone need it*/ for(i=1;i<=12;i++){ sprintf(name,"ubuntuer%d",i); printf("%s want to borrow one ubuntu disk : ",name); if(roque_push(&roque,&i)==0)printf(" ok "); else printf(" no more disk!!! "); } printf("borrowed disk number is : %d ",roque_size(&roque)); printf("max count of disks can been borrowed: %d ",roque_max_size(&roque)); printf("==================ubuntu disk borrow status============ "); roque_traverse(&roque,roque_print); printf("============================================= "); printf("ubuntuer1 and ubuntuer2 has been return the disks... "); roque_pop(&roque,NULL); roque_pop(&roque,NULL); printf("now has %d disks can been borrowed " ,roque_max_size(&roque)-roque_size(&roque)); printf("==================ubuntu disk borrow status============ "); roque_traverse(&roque,roque_print); printf("============================================= "); printf("ubuntuer 11 want to borrow a disk : "); i=11; if(roque_push(&roque,&i)==0)printf(" ok "); else printf(" error !!! "); printf("ubuntuer 12 want to borrow a disk : "); i=12; if(roque_push(&roque,&i)==0)printf(" ok "); else printf(" error !!! "); printf("ubuntuer 13 want to borrow a disk : "); i=13; if(roque_push(&roque,&i)==0)printf(" ok "); else printf(" error !!! "); printf("==================ubuntu disk borrow status============ "); roque_traverse(&roque,roque_print); printf("============================================= "); return 0;}void roque_print(node_t* node){ printf("ubuntu disk %d had been borrowed ",disk_number(node));}int disk_number(node_t* node){ int index=0; index=*node%disk_count; if(index==0)index=disk_count; return index;}this is the make file :
#Makefile#!/bin/bashCC=gccall: roque_testroque_test: roque.o roque_test.o $(CC) -g $^ -o $@ -O -Wall%.o:%.c $(CC) -g -c $< -Wallclean: rm -r *.othis is the output :
newlad@ubuntu:~/workspace/algorithms/learn/queue/roque$ ./roque_test ubuntuer1 want to borrow one ubuntu disk : ok ubuntuer2 want to borrow one ubuntu disk : ok ubuntuer3 want to borrow one ubuntu disk : ok ubuntuer4 want to borrow one ubuntu disk : ok ubuntuer5 want to borrow one ubuntu disk : ok ubuntuer6 want to borrow one ubuntu disk : ok ubuntuer7 want to borrow one ubuntu disk : ok ubuntuer8 want to borrow one ubuntu disk : ok ubuntuer9 want to borrow one ubuntu disk : ok ubuntuer10 want to borrow one ubuntu disk : ok ubuntuer11 want to borrow one ubuntu disk : no more disk!!! ubuntuer12 want to borrow one ubuntu disk : no more disk!!! borrowed disk number is : 10max count of disks can been borrowed: 10==================ubuntu disk borrow status============ubuntu disk 1 had been borrowed ubuntu disk 2 had been borrowed ubuntu disk 3 had been borrowed ubuntu disk 4 had been borrowed ubuntu disk 5 had been borrowed ubuntu disk 6 had been borrowed ubuntu disk 7 had been borrowed ubuntu disk 8 had been borrowed ubuntu disk 9 had been borrowed ubuntu disk 10 had been borrowed =============================================ubuntuer1 and ubuntuer2 has been return the disks...now has 2 disks can been borrowed==================ubuntu disk borrow status============ubuntu disk 3 had been borrowed ubuntu disk 4 had been borrowed ubuntu disk 5 had been borrowed ubuntu disk 6 had been borrowed ubuntu disk 7 had been borrowed ubuntu disk 8 had been borrowed ubuntu disk 9 had been borrowed ubuntu disk 10 had been borrowed =============================================ubuntuer 11 want to borrow a disk : ok ubuntuer 12 want to borrow a disk : ok ubuntuer 13 want to borrow a disk : error !!! ==================ubuntu disk borrow status============ubuntu disk 3 had been borrowed ubuntu disk 4 had been borrowed ubuntu disk 5 had been borrowed ubuntu disk 6 had been borrowed ubuntu disk 7 had been borrowed ubuntu disk 8 had been borrowed ubuntu disk 9 had been borrowed ubuntu disk 10 had been borrowed ubuntu disk 1 had been borrowed ubuntu disk 2 had been borrowed =============================================