wangzhengquan
2020-07-16 4892aa7927086988e96918293272693a65d049b7
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#include "socket.h"
#include <map>
 
 
 
 
void print_msg(char *head, shm_msg_t& msg) {
    err_msg(0, "%s: port=%d, type=%d\n", head, msg.port, msg.type);
}
 
void * _server_run_msg_rev(void* _socket);
 
void * _client_run_msg_rev(void* _socket);
 
SHMQueue<shm_msg_t> * _attach_remote_queue(int port) ;
 
void shm_init(int size) {
    mem_pool_init(size);
}
 
void shm_destroy() {
    mem_pool_destroy();
}
 
void shm_free(void *buf) {
    free(buf);
}
 
shm_socket_t *shm_open_socket() {
    shm_socket_t *socket = (shm_socket_t *)calloc(1, sizeof(shm_socket_t));
    
    socket->port = -1;
    socket->dispatch_thread = 0;
    
    return socket;
}
 
 
int shm_close_socket(shm_socket_t *socket) {
    //给对方发送一个关闭连接的消息
    struct timespec timeout = {1, 0};
    shm_msg_t close_msg;
    close_msg.port = socket->port;
    close_msg.size = 0;
    close_msg.type=SHM_SOCKET_CLOSE;
    if(socket->remoteQueue != NULL) {
        socket->remoteQueue->push_timeout(close_msg, &timeout);
    }
    
 
 
    if(socket->queue != NULL)
        delete socket->queue;
    if(socket->remoteQueue != NULL)
        delete socket->remoteQueue;
 
    if(socket->messageQueue != NULL)
        delete socket->messageQueue;
 
    if(socket->acceptQueue != NULL)
        delete socket->acceptQueue;
 
    if(socket->clientSocketMap != NULL) {
        shm_socket_t *client_socket;
        for(auto iter = socket->clientSocketMap->begin(); iter != socket->clientSocketMap->end(); iter++) {
            client_socket= iter->second;
 
            client_socket->remoteQueue->push_timeout(close_msg, &timeout);
            delete client_socket->remoteQueue;
            delete client_socket->messageQueue;
            socket->clientSocketMap->erase(iter);
            free((void *)client_socket);
        }
        delete socket->clientSocketMap;
    }
 
 
    if(socket->dispatch_thread != 0)
        pthread_cancel(socket->dispatch_thread);
 
 
     
    free(socket);
    return 0;
 
}
 
 
int shm_bind(shm_socket_t * socket, int port) {
    shm_socket_t * _socket = (shm_socket_t *) socket;
    _socket -> port = port;
    return 0;
}
 
int shm_listen(shm_socket_t* socket) {
    int  port;
    hashtable_t *hashtable = mm_get_hashtable();
    if(socket -> port == -1) {
        port = hashtable_alloc_key(hashtable);
        socket -> port = port;
    } else {
         
        if(hashtable_get(hashtable, socket->port)!= NULL) {
            err_exit(0, "key %d has already been in used!", socket->port);
        }
    }
 
    socket->queue = new SHMQueue<shm_msg_t>(socket->port, 16);
    socket->acceptQueue = new LockFreeQueue<shm_msg_t, DM_Allocator>(16);
    socket->clientSocketMap = new std::map<int, shm_socket_t* >;
    
    pthread_create(&(socket->dispatch_thread), NULL, _server_run_msg_rev , (void *)socket);
 
    return 0;
}
 
void _server_close_conn_to_client(shm_socket_t* socket, int port) {
    shm_socket_t *client_socket;
    auto iter = socket->clientSocketMap->find(port);
    if( iter !=  socket->clientSocketMap->end() ) {
        client_socket= iter->second;
        delete client_socket->remoteQueue;
        delete client_socket->messageQueue;
        socket->clientSocketMap->erase(iter);
    }
    free((void *)client_socket);
 
}
 
/**
 * server端各种类型消息()在这里进程分拣
 */
void * _server_run_msg_rev(void* _socket) {
    pthread_detach(pthread_self());
    shm_socket_t* socket = (shm_socket_t*) _socket;
    struct timespec timeout = {1, 0};
    shm_msg_t src;
    shm_socket_t *client_socket;
    std::map<int, shm_socket_t* >::iterator iter;
    while(socket->queue->pop(src)) {
print_msg("=====_server_run_msg_rev:", src);
        switch (src.type) {
            case SHM_SOCKET_OPEN : 
                socket->acceptQueue->push_timeout(src, &timeout);
                break;
            case SHM_SOCKET_CLOSE :
                _server_close_conn_to_client(socket, src.port);
                break;
            case SHM_COMMON_MSG :
err_msg(0, "===_server_run_msg_rev 1");                
                iter = socket->clientSocketMap->find(src.port);
                if( iter !=  socket->clientSocketMap->end()) {
                    client_socket= iter->second;
err_msg(0, "===_server_run_msg_rev client_socket->messageQueue=%p", client_socket->messageQueue);    
                    client_socket->messageQueue->push_timeout(src, &timeout);
                }
                
                break;
 
            default:
                err_msg(0, "socket.__shm_rev__: undefined message type.");
        }
    }
 
    return NULL;
}
 
 
 
 
 
shm_socket_t* shm_accept(shm_socket_t* socket) {
    hashtable_t *hashtable = mm_get_hashtable();
    int client_port;
    shm_socket_t *client_socket;
    shm_msg_t src;
 
    if (socket->acceptQueue->pop(src) ) {
 
print_msg("===accept:", src);
        client_port = src.port;
        client_socket = (shm_socket_t *)malloc(sizeof(shm_socket_t));
        client_socket->port = socket->port;
        // client_socket->queue= socket->queue;
        //初始化消息queue
        client_socket->messageQueue = new LockFreeQueue<shm_msg_t, DM_Allocator>(16); 
        //连接到对方queue
        client_socket->remoteQueue = _attach_remote_queue(client_port);
 
        socket->clientSocketMap->insert({client_port, client_socket});
 
        return client_socket;
    } else {
        err_exit(errno, "shm_accept");
    }
    
}
 
 
int shm_connect(shm_socket_t* socket, int port) {
    hashtable_t *hashtable = mm_get_hashtable();
    if(hashtable_get(hashtable, port)== NULL) {
        err_exit(0, "shm_connect:connect at port %d  failed!", port);
    }
    if(socket->port == -1) {
        socket->port = hashtable_alloc_key(hashtable);
    } else {
         
        if(hashtable_get(hashtable, socket->port)!= NULL) {
            err_exit(0, "key %d has already been in used!", socket->port);
        }
    }
 
    socket->queue = new SHMQueue<shm_msg_t>(socket->port, 16);
    socket->remoteQueue = new SHMQueue<shm_msg_t>(port, 0);
    socket->messageQueue = new LockFreeQueue<shm_msg_t, DM_Allocator>(16); 
    struct timespec timeout = {1, 0};
 
    shm_msg_t open_msg;
    open_msg.port = socket->port;
    open_msg.size = 0;
    open_msg.type=SHM_SOCKET_OPEN;
    socket->remoteQueue->push_timeout(open_msg, &timeout);
 
    pthread_create(&(socket->dispatch_thread), NULL, _client_run_msg_rev , (void *)socket);
    return 0;
}
 
void _client_close_conn_to_server(shm_socket_t* socket) {
    if(socket->queue != NULL)
        delete socket->queue;
    if(socket->remoteQueue != NULL)
        delete socket->remoteQueue;
 
    if(socket->messageQueue != NULL)
        delete socket->messageQueue;
 
    if(socket->acceptQueue != NULL)
        delete socket->acceptQueue;
 
    if(socket->dispatch_thread != 0)
        pthread_cancel(socket->dispatch_thread);
 
}
 
 
/**
 * client端的各种类型消息()在这里进程分拣
 */
void * _client_run_msg_rev(void* _socket) {
    pthread_detach(pthread_self());
    shm_socket_t* socket = (shm_socket_t*) _socket;
    struct timespec timeout = {1, 0};
    shm_msg_t src;
    
    while(socket->queue->pop(src)) {
        switch (src.type) {
             
            case SHM_SOCKET_CLOSE :
                _client_close_conn_to_server(socket);
                break;
            case SHM_COMMON_MSG :
                socket->messageQueue->push_timeout(src, &timeout);
                break;
            default:
                err_msg(0, "socket.__shm_rev__: undefined message type.");
        }
    }
 
    return NULL;
}
 
 
 
 
 
int shm_send(shm_socket_t *socket, void *buf, int size) {
    // hashtable_t *hashtable = mm_get_hashtable();
    shm_msg_t dest;
    dest.type=SHM_COMMON_MSG;
    dest.port = socket->port;
    dest.size = size;
    dest.buf = mm_malloc(size);
    memcpy(dest.buf, buf, size);
 
    socket->remoteQueue->push(dest);
    return 0;
}
 
int shm_recv(shm_socket_t* socket, void **buf, int *size) {
    shm_msg_t src;
err_msg(0, "====shm_recv socket ==%p", socket);
    bool rv = socket->messageQueue->pop(src);
    if (rv) {
        void * _buf = malloc(src.size);
        memcpy(_buf, src.buf, src.size);
        *buf = _buf;
        *size = src.size;
        mm_free(src.buf);
    }
    
    return 0;
    
}
 
 
/**
 * 绑定key到队列,但是并不会创建队列。如果没有对应指定key的队列提示错误并退出
 */
SHMQueue<shm_msg_t> * _attach_remote_queue(int port) {
    hashtable_t *hashtable = mm_get_hashtable();
    if(hashtable_get(hashtable, port)== NULL) {
        err_exit(0, "_remote_queue_attach:connet at port %d  failed!", port);
        return NULL;
    }
     
    SHMQueue<shm_msg_t> *queue = new SHMQueue<shm_msg_t>(port, 0);
    return queue;
}