#ifndef __SHM_SOCKET_H__
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#define __SHM_SOCKET_H__
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#include "usg_common.h"
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#include "usg_typedef.h"
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#include "shm_queue.h"
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#include "lock_free_queue.h"
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#include <functional>
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enum shm_socket_type_t
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{
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SHM_SOCKET_STREAM = 1,
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SHM_SOCKET_DGRAM = 2
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};
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typedef struct shm_packet_t {
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int key;
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size_t size;
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void * buf;
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char uuid[64];
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} shm_packet_t;
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typedef struct shm_socket_t {
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shm_socket_type_t socket_type;
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// 本地key
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int key;
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bool force_bind;
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pthread_mutex_t mutex;
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LockFreeQueue<shm_packet_t> *queue; //self queue
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LockFreeQueue<shm_packet_t> *remoteQueue; // peer queue
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std::map<std::string, shm_packet_t> recvbuf;
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} shm_socket_t;
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// typedef void (*recv_callback_fn)(void **sendbuf, int *sendsize);
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typedef std::function<void(void **sendbuf, int *sendsize)> recv_callback_fn;
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size_t shm_socket_remove_keys(int keys[], size_t length);
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shm_socket_t *shm_open_socket(shm_socket_type_t socket_type);
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int shm_close_socket(shm_socket_t * socket) ;
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int shm_socket_bind(shm_socket_t * socket, int key) ;
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int shm_socket_force_bind(shm_socket_t * socket, int key) ;
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/**
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* @flags : BUS_NOWAIT_FLAG
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*/
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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);
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int shm_recvfrom(shm_socket_t *socket, void **buf, int *size, int *key, const struct timespec * timeout = NULL, int flags=0);
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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,
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const struct timespec * timeout = NULL, int flags = 0);
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/**
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* @callback void (*recv_callback_fn)(void **sendbuf, int *sendsize)
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* sendbuf 和 sendsize是callbak_fn回调函数的返回值, 分别表示发送数据，和发送数据的大小。
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*
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*/
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int shm_recvandsend(shm_socket_t *sockt, void **recvbuf, int *recvsize, int *key, recv_callback_fn callback,
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const struct timespec *timeout = NULL, int flag = 0);
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#endif
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