C語言資料結構（環形緩衝區）

3.1、環形緩衝區初始化

int ringbufferinit(ringbuffer_t *ringbuf)

int isringbufferempty(ringbuffer_t *ringbuf)

int isringbufferfull(ringbuffer_t *ringbuf)

int ringbufferproduce(ringbuffer_t *ringbuf,char *buffer,int buffer_len)

int ringbufferconsum(ringbuffer_t *ringbuf,char *buffer,int buffer_len)

int ringbufferlength(ringbuffer_t *ringbuf)

int ringbufferfreespace(ringbuffer_t *ringbuf)

#ifndef _ringbuffer_h

#define _ringbuffer_h
#define max_buffer_len 1024
typedef enum;
typedef struct _ring_buf_ringbuffer_t;
int ringbufferinit(ringbuffer_t *ringbuf);
int isringbufferfull(ringbuffer_t *ringbuf);
int isringbufferempty(ringbuffer_t *ringbuf);
int ringbufferlength(ringbuffer_t *ringbuf);
int ringbufferfreespace(ringbuffer_t *ringbuf);
int ringbufferproduce(ringbuffer_t *ringbuf,char *buffer,int buffer_len);
int ringbufferconsum(ringbuffer_t *ringbuf,char *buffer,int buffer_len);
#endif

#include #include #include #include #include #include #include "ringbuffer.h"

typedef structmem_data_t;
int main(int arcv,char *ar**)
shmid = shmget(key,4096,0666|ipc_creat);
if(shmid < 0)
data = shmat(shmid,null,0);
if(null == data)
printf("key:%x,shmid:%d,addr:%p\r\n",key,shmid,data);
if(0 == strncmp(ar**[1],"read",4))//出隊
sleep(1);
}	}else
while(1)
}ret = shmctl(shmid,0,ipc_rmid);//刪除共享記憶體
if(ret<0)
return 0;
}

c 環形緩衝區

public class circularbuffer icollection,ienumerable,icollection,ienumerable public circularbuffer int capacity,bool allowoverflow public bool allowove...

環形緩衝區

include include include include include define buffsize 1024 1024 define min x,y x y x y pthread mutex t lock pthread mutex initializer struct cycle b...

環形緩衝區

define print buf size 16 1024 static char g pcnetprintbuf 環形緩衝區的首位址 static int g ireadpos 0 環形緩衝區讀的位置 static int g iwritepos 0 環形緩衝區寫的位置 intinit 判斷環形緩...