#ifndef __SHM_SOCKET_H__
#define __SHM_SOCKET_H__

#include "usg_common.h"
#include "usg_typedef.h"
#include "shm_queue.h"
#include "lock_free_queue.h"

enum shm_socket_type_t
{
	SHM_SOCKET_STREAM = 1,
	SHM_SOCKET_DGRAM = 2
	
};
 

typedef struct shm_packet_t {
	int key;
	size_t size;
	void * buf;

} shm_packet_t;




typedef struct shm_socket_t {
	shm_socket_type_t socket_type;
	// 本地key
	int key;
	bool force_bind;
	pthread_mutex_t mutex;

	LockFreeQueue<shm_packet_t> *queue;  //self queue
	LockFreeQueue<shm_packet_t> *remoteQueue; // peer queue
	

} shm_socket_t;



size_t shm_socket_remove_keys(int keys[], size_t length);

shm_socket_t *shm_open_socket(shm_socket_type_t socket_type);


int shm_close_socket(shm_socket_t * socket) ;


int shm_socket_bind(shm_socket_t * socket, int key) ;

int shm_socket_force_bind(shm_socket_t * socket, int key) ;
 
/**
 * @flags : BUS_NOWAIT_FLAG
 */
int shm_sendto(shm_socket_t *socket, const void *buf, const int size, const int key, const struct timespec * timeout = NULL, const int flags=0);

int shm_recvfrom(shm_socket_t *socket, void **buf, int *size, int *key,  const struct timespec * timeout = NULL,  int flags=0);

int shm_sendandrecv(shm_socket_t *socket, const void *send_buf, const int send_size, const int send_key, void **recv_buf, int *recv_size,  
	const struct timespec * timeout = NULL,  int flags=0);

/**
 * 功能同shm_sendandrecv, 但是不是线程安全的
 */
int shm_sendandrecv_unsafe(shm_socket_t *socket, const void *send_buf, const int send_size, const int send_key, void **recv_buf, int *recv_size,  
	const struct timespec * timeout = NULL,  int flags=0);




#endif