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/************************************************************************************************************ */
/*****Copyright: 2014 Spreatrum. All Right Reserved */
/*****File: mdbg_ring.h */
/*****Description: Marlin Debug System ring buffer definition. */
/*****Developer: fan.kou@spreadtrum.com */
/*****Date: 06/01/2014 */
/************************************************************************************************************ */
#ifndef _MDBG_RING_H
#define _MDBG_RING_H
/*******************************************************/
/*********************INCLUDING********************/
/*******************************************************/
#include "mdbg_type.h"
#include <linux/mutex.h>
/*******************************************************/
/******************Macor Definitions****************/
/*******************************************************/
#define MDBG_RING_R 0
#define MDBG_RING_W 1
#define MDBG_RING_MIN_SIZE (1024 * 4)
#define MDBG_RING_LOCK_SIZE (sizeof(mdbg_ring_lock))
/*******************************************************/
/******************Type Definitions*****************/
/*******************************************************/
typedef struct mutex mdbg_ring_lock;
typedef struct mdbg_ring_t {
MDBG_SIZE_T size;
char * pbuff;
char* rp;
char* wp;
char* end;
mdbg_ring_lock* plock;
}MDBG_RING_T;
/*******************************************************/
/***********Public Interface Declaration************/
/*******************************************************/
MDBG_RING_T* mdbg_ring(MDBG_SIZE_T size);
void mdbg_ring_destroy(MDBG_RING_T* pRing);
int mdbg_ring_read(MDBG_RING_T* pRing, char* buf, int len);
int mdbg_ring_write(MDBG_RING_T* pRing, char* buf, int len);
char* mdbg_ring_write_ext(MDBG_RING_T* pRing, MDBG_SIZE_T len);
bool mdbg_ring_will_full(MDBG_RING_T* pRing, int len);
#endif
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