#include "shm_socket.h"
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#include "hashtable.h"
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#include "logger_factory.h"
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#include <map>
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#include <cassert>
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#include "bus_error.h"
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#include "sole.h"
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#include "shm_mm.h"
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#include "key_def.h"
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static Logger *logger = LoggerFactory::getLogger();
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ShmQueueStMap * shmQueueStMap ;
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static void print_msg(char *head, shm_packet_t &msg) {
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// err_msg(0, "%s: key=%d, type=%d\n", head, msg.key, msg.type);
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}
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static pthread_once_t _once_ = PTHREAD_ONCE_INIT;
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static pthread_key_t _localthread_socket_key_;
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static void _destrory_threadlocal_socket_(void *tmp_socket);
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static void _create_threadlocal_socket_key_(void);
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static int shm_recvpakfrom(shm_socket_t *sockt, shm_packet_t *recvpak , const struct timespec *timeout, int flag);
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static int shm_sendpakto(shm_socket_t *sockt, shm_packet_t *sendpak,
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const int key, const struct timespec *timeout, const int flag);
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static int _shm_sendandrecv_uuid(shm_socket_t *sockt, const void *send_buf,
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const int send_size, const int key, void **recv_buf,
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int *recv_size, const struct timespec *timeout, int flags);
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static int _shm_sendandrecv_thread_local(shm_socket_t *sockt, const void *send_buf,
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const int send_size, const int send_key, void **recv_buf,
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int *recv_size, const struct timespec *timeout, int flags) ;
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// 检查key是否已经被使用， 未被使用则绑定key
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static LockFreeQueue<shm_packet_t> * shm_socket_bind_queue(int key, bool force) {
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hashtable_t *hashtable = mm_get_hashtable();
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LockFreeQueue<shm_packet_t> *queue;
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void *tmp_ptr = hashtable_get(hashtable, key);
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if (tmp_ptr == NULL || tmp_ptr == (void *)1 ) {
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queue = new LockFreeQueue<shm_packet_t>(32);
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hashtable_put(hashtable, key, (void *)queue);
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return queue;
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} else if(force) {
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return (LockFreeQueue<shm_packet_t> *) tmp_ptr;
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}
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return NULL;
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}
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/**
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* 绑定key到队列，但是并不会创建队列。
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*/
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static LockFreeQueue<shm_packet_t> * shm_socket_attach_queue(int key) {
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LockFreeQueue<shm_packet_t> * queue;
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hashtable_t *hashtable = mm_get_hashtable();
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void *tmp_ptr = hashtable_get(hashtable, key);
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if (tmp_ptr == NULL || tmp_ptr == (void *)1) {
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return NULL;
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}
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queue = ( LockFreeQueue<shm_packet_t> *)tmp_ptr;
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// hashtable_unlock(hashtable);
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return queue;
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}
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shm_socket_t *shm_socket_open(shm_socket_type_t socket_type) {
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int s, type;
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pthread_mutexattr_t mtxAttr;
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logger->debug("shm_socket_open\n");
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// shm_socket_t *socket = (shm_socket_t *)calloc(1, sizeof(shm_socket_t));
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shm_socket_t *sockt = new shm_socket_t;
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sockt->socket_type = socket_type;
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sockt->key = 0;
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sockt->force_bind = false;
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sockt->queue = NULL;
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s = pthread_mutexattr_init(&mtxAttr);
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if (s != 0)
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err_exit(s, "pthread_mutexattr_init");
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s = pthread_mutexattr_settype(&mtxAttr, PTHREAD_MUTEX_ERRORCHECK);
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if (s != 0)
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err_exit(s, "pthread_mutexattr_settype");
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s = pthread_mutex_init(&(sockt->mutex), &mtxAttr);
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if (s != 0)
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err_exit(s, "pthread_mutex_init");
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s = pthread_mutexattr_destroy(&mtxAttr);
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if (s != 0)
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err_exit(s, "pthread_mutexattr_destroy");
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shmQueueStMap = shm_mm_attach<ShmQueueStMap>(SHM_QUEUE_ST_KEY);
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return sockt;
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}
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static int _shm_socket_close_(shm_socket_t *sockt) {
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int rv, i;
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hashtable_t *hashtable = mm_get_hashtable();
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logger->debug("shm_socket_close\n");
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// if(sockt->key != 0) {
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// auto it = shmQueueStMap->find(sockt->key);
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// if(it != shmQueueStMap->end()) {
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// it->second.status = SHM_QUEUE_ST_CLOSED;
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// it->second.closeTime = time(NULL);
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// }
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// }
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if(sockt->queue != NULL) {
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sockt->queue->close();
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for( i = 0; i < sockt->queue->size(); i++) {
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mm_free((*(sockt->queue))[i].buf);
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logger->info("======= %d free queue element buf\n", sockt->key);
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}
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sleep(1);
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hashtable_remove(hashtable, sockt->key);
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// sockt->queue = NULL;
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}
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pthread_mutex_destroy(&(sockt->mutex) );
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free(sockt);
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return 0;
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}
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int shm_socket_close(shm_socket_t *sockt) {
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shm_socket_t * threadlocal_socket = (shm_socket_t *)pthread_getspecific(_localthread_socket_key_);
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if(threadlocal_socket != NULL) {
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_destrory_threadlocal_socket_(threadlocal_socket);
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}
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return _shm_socket_close_(sockt);
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}
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int shm_socket_stop(shm_socket_t *sockt) {
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struct timespec timeout = {5, 0};
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shm_packet_t sendpak = {0};
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sendpak.key = sockt->key;
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sendpak.action = BUS_ACTION_STOP;
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sendpak.size = 0;
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return shm_sendpakto(sockt, &sendpak, sockt->key, &timeout, BUS_TIMEOUT_FLAG);
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}
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int shm_socket_bind(shm_socket_t *sockt, int key) {
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sockt->key = key;
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return 0;
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}
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int shm_socket_force_bind(shm_socket_t *sockt, int key) {
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sockt->force_bind = true;
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sockt->key = key;
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return 0;
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}
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int shm_socket_get_key(shm_socket_t *sockt){
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return sockt->key;
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}
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// 短连接方式发送
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int shm_sendto(shm_socket_t *sockt, const void *buf, const int size,
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const int key, const struct timespec *timeout, const int flag) {
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int rv;
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shm_packet_t sendpak = {0};
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sendpak.key = sockt->key;
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sendpak.size = size;
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if(buf != NULL) {
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sendpak.buf = mm_malloc(size);
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memcpy(sendpak.buf, buf, size);
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}
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rv = shm_sendpakto(sockt, &sendpak, key, timeout, flag);
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return rv;
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}
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int shm_sendandrecv(shm_socket_t *sockt, const void *send_buf,
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const int send_size, const int key, void **recv_buf,
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int *recv_size, const struct timespec *timeout, int flags) {
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// return _shm_sendandrecv_uuid(sockt, send_buf, send_size, key, recv_buf, recv_size, timeout, flags);
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return _shm_sendandrecv_thread_local(sockt, send_buf, send_size, key, recv_buf, recv_size, timeout, flags);
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}
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/**
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* @callback void (*recvandsend_callback_fn)(void *recvbuf, int recvsize, int key, 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, recvandsend_callback_fn callback,
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const struct timespec *timeout, int flag, void *user_data) {
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int rv;
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void *sendbuf, *recvbuf = NULL;
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int sendsize = 0;
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shm_packet_t recvpak = {0};
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rv = shm_recvpakfrom(sockt , &recvpak, timeout, flag);
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if (rv != 0) {
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if(rv == ETIMEDOUT){
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logger->debug("%d shm_recvandsend failed %s", shm_socket_get_key(sockt), bus_strerror(EBUS_TIMEOUT));
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return EBUS_TIMEOUT;
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}
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logger->error("%d shm_recvandsend failed %s", shm_socket_get_key(sockt), bus_strerror(rv));
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return rv;
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}
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if(recvpak.buf != NULL) {
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recvbuf = malloc(recvpak.size);
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memcpy(recvbuf, recvpak.buf, recvpak.size);
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mm_free(recvpak.buf);
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}
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callback(recvbuf, recvpak.size, recvpak.key, &sendbuf, &sendsize, user_data);
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shm_packet_t sendpak = {0};
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sendpak.key = sockt->key;
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sendpak.size = sendsize;
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memcpy(sendpak.uuid, recvpak.uuid, sizeof(sendpak.uuid));
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if(sendbuf !=NULL && sendsize > 0) {
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sendpak.buf = mm_malloc(sendsize);
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memcpy(sendpak.buf, sendbuf, sendsize);
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} else {
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logger->warn("%d shm_recvandsend : sendbuf is null", shm_socket_get_key(sockt));
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// return -1;
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}
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rv = shm_sendpakto(sockt, &sendpak, recvpak.key, timeout, flag);
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return 0;
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}
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// 短连接方式接受
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int shm_recvfrom(shm_socket_t *sockt, void **buf, int *size, int *key, const struct timespec *timeout, int flag) {
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int rv;
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shm_packet_t recvpak;
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rv = shm_recvpakfrom(sockt , &recvpak, timeout, flag);
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if (rv != 0) {
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logger->debug("%d shm_recvfrom failed %s", shm_socket_get_key(sockt), bus_strerror(rv));
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return rv;
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}
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if(recvpak.buf != NULL) {
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if (buf == NULL) {
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logger->warn("!!!Alert: buf should be not NULL!\n");
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} else {
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void *_buf = malloc(recvpak.size);
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memcpy(_buf, recvpak.buf, recvpak.size);
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*buf = _buf;
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}
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}
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if(size != NULL)
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*size = recvpak.size;
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if(key != NULL)
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*key = recvpak.key;
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if(recvpak.key == 0) {
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err_exit(0, "key = %d, pid= %d, recvpak.key == 0", shm_socket_get_key(sockt), getpid());
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}
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mm_free(recvpak.buf);
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return 0;
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}
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// =================================================================================================
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/* Free thread-specific data buffer */
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static void _destrory_threadlocal_socket_(void *tmp_socket)
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{
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int rv;
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logger->debug("%lu destroy threadlocal socket\n", pthread_self());
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if(tmp_socket == NULL)
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return;
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_shm_socket_close_((shm_socket_t *)tmp_socket);
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rv = pthread_setspecific(_localthread_socket_key_, NULL);
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if ( rv != 0) {
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logger->error(rv, "shm_sendandrecv : pthread_setspecific");
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exit(1);
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}
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}
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/* One-time key creation function */
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static void _create_threadlocal_socket_key_(void)
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{
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int s;
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/* Allocate a unique thread-specific data key and save the address
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of the destructor for thread-specific data buffers */
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s = pthread_key_create(&_localthread_socket_key_, _destrory_threadlocal_socket_);
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//s = pthread_key_create(&_localthread_socket_key_, NULL);
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if (s != 0) {
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logger->error(s, "pthread_key_create");
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exit(1);
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}
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}
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static int _shm_sendandrecv_uuid(shm_socket_t *sockt, const void *send_buf,
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const int send_size, const int key, void **recv_buf,
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int *recv_size, const struct timespec *timeout, int flags) {
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int rv, tryn = 16;
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shm_packet_t sendpak;
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shm_packet_t recvpak;
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std::map<std::string, shm_packet_t>::iterator recvbufIter;
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std::string uuid = sole::uuid4().str();
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sendpak.key = sockt->key;
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sendpak.size = send_size;
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if(send_buf != NULL) {
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sendpak.buf = mm_malloc(send_size);
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memcpy(sendpak.buf, send_buf, send_size);
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}
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memcpy(sendpak.uuid, uuid.c_str(), uuid.length() + 1);
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// uuid.copy(sendpak.uuid, sizeof sendpak.uuid);
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rv = shm_sendpakto(sockt, &sendpak, key, timeout, flags);
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if(rv != 0) {
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return rv;
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}
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while(tryn > 0) {
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tryn--;
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recvbufIter = sockt->recvbuf.find(uuid);
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if(recvbufIter != sockt->recvbuf.end()) {
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// 在缓存里查到了UUID匹配成功的
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logger->debug("get from recvbuf: %s", uuid.c_str());
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recvpak = recvbufIter->second;
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sockt->recvbuf.erase(recvbufIter);
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goto LABLE_SUC;
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}
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rv = shm_recvpakfrom(sockt, &recvpak, timeout, flags);
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if (rv != 0) {
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if(rv == ETIMEDOUT) {
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return EBUS_TIMEOUT;
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}
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logger->debug("%d shm_recvfrom failed %s", shm_socket_get_key(sockt), bus_strerror(rv));
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return rv;
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}
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logger->debug("send uuid:%s, recv uuid: %s", uuid.c_str(), recvpak.uuid);
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if(strlen(recvpak.uuid) == 0) {
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continue;
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} else if (strncmp(uuid.c_str(), recvpak.uuid, sizeof(recvpak.uuid)) == 0) {
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// 发送与接受的UUID匹配成功
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goto LABLE_SUC;
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} else {
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// 答非所问，放到缓存里
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sockt->recvbuf.insert({recvpak.uuid, recvpak});
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continue;
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}
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}
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LABLE_FAIL:
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return EBUS_RECVFROM_WRONG_END;
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LABLE_SUC:
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if(recv_buf != NULL) {
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void *_buf = malloc(recvpak.size);
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memcpy(_buf, recvpak.buf, recvpak.size);
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*recv_buf = _buf;
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mm_free(recvpak.buf);
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}
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if(recv_size != NULL)
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*recv_size = recvpak.size;
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return 0;
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}
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// use thread local
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static int _shm_sendandrecv_thread_local(shm_socket_t *sockt, const void *send_buf,
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const int send_size, const int key, void **recv_buf,
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int *recv_size, const struct timespec *timeout, int flags) {
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|
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int rv = 0, tryn = 16;
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static int Counter_suc = 0;
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static int Counter_fail = 0;
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shm_packet_t sendpak;
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shm_packet_t recvpak;
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std::map<int, shm_packet_t>::iterator recvbufIter;
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// 用thread local 保证每个线程用一个独占的socket接受对方返回的信息
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shm_socket_t *tmp_socket = NULL;
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rv = pthread_once(&_once_, _create_threadlocal_socket_key_);
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if (rv != 0) {
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logger->error(rv, "shm_sendandrecv pthread_once");
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exit(1);
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}
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tmp_socket = (shm_socket_t *)pthread_getspecific(_localthread_socket_key_);
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if (tmp_socket == NULL)
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{
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/* If first call from this thread, allocate buffer for thread, and save its location */
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tmp_socket = shm_socket_open(SHM_SOCKET_DGRAM);
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rv = pthread_setspecific(_localthread_socket_key_, tmp_socket);
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if ( rv != 0) {
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logger->error(rv, "shm_sendandrecv : pthread_setspecific");
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exit(1);
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}
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}
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sendpak.key = tmp_socket->key;
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sendpak.size = send_size;
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if(send_buf != NULL) {
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sendpak.buf = mm_malloc(send_size);
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memcpy(sendpak.buf, send_buf, send_size);
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}
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rv = shm_sendpakto(tmp_socket, &sendpak, key, timeout, flags);
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|
if(rv != 0) {
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return rv;
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}
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while(tryn > 0) {
|
tryn--;
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recvbufIter = tmp_socket->recvbuf2.find(key);
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if(recvbufIter != tmp_socket->recvbuf2.end()) {
|
// 在缓存里查到了key匹配成功的
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recvpak = recvbufIter->second;
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tmp_socket->recvbuf2.erase(recvbufIter);
|
goto LABLE_SUC;
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}
|
|
rv = shm_recvpakfrom(tmp_socket, &recvpak, timeout, flags);
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|
if (rv != 0) {
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logger->debug("%d shm_recvfrom failed %s", shm_socket_get_key(tmp_socket), bus_strerror(rv));
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return rv;
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}
|
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if (key == recvpak.key) {
|
// 发送与接受的UUID匹配成功
|
goto LABLE_SUC;
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} else {
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// 答非所问，放到缓存里
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tmp_socket->recvbuf2.insert({recvpak.key, recvpak});
|
continue;
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}
|
}
|
|
LABLE_FAIL:
|
return EBUS_RECVFROM_WRONG_END;
|
|
LABLE_SUC:
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if(recv_buf != NULL) {
|
void *_buf = malloc(recvpak.size);
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memcpy(_buf, recvpak.buf, recvpak.size);
|
*recv_buf = _buf;
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mm_free(recvpak.buf);
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}
|
|
if(recv_size != NULL)
|
*recv_size = recvpak.size;
|
|
|
return 0;
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}
|
|
static int _shm_sendandrecv_alloc_new(shm_socket_t *sockt, const void *send_buf,
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const int send_size, const int send_key, void **recv_buf,
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int *recv_size, const struct timespec *timeout, int flags) {
|
int recv_key;
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int rv;
|
|
int tryn = 0;
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shm_socket_t *tmp_socket;
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|
|
tmp_socket = shm_socket_open(SHM_SOCKET_DGRAM);
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|
if ((rv = shm_sendto(tmp_socket, send_buf, send_size, send_key, timeout, flags)) == 0) {
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rv = shm_recvfrom(tmp_socket, recv_buf, recv_size, &recv_key, timeout, flags);
|
|
while(tryn < 3) {
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tryn++;
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rv = shm_recvfrom(tmp_socket, recv_buf, recv_size, &recv_key, timeout, flags);
|
if(rv != 0) {
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logger->error("_shm_sendandrecv_alloc_new : %s\n", bus_strerror(rv));
|
return rv;
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}
|
|
// 超时导致接发送对象，与返回对象不对应的情况
|
if(send_key != recv_key) {
|
// logger->debug("======%d use tmp_socket %d, send to %d, receive from %d\n", shm_socket_get_key(sockt), shm_socket_get_key(tmp_socket), send_key, recv_key);
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// logger->error( "_shm_sendandrecv_alloc_new: send key expect to equal to recv key! send key =%d , recv key=%d", send_key, recv_key);
|
|
continue;
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}
|
return 0;
|
}
|
|
return EBUS_RECVFROM_WRONG_END;
|
}
|
|
_shm_socket_close_(tmp_socket);
|
return rv;
|
|
}
|
|
|
|
static int shm_sendpakto(shm_socket_t *sockt, shm_packet_t *sendpak,
|
const int key, const struct timespec *timeout, const int flag) {
|
|
int rv;
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shm_queue_status_t stRecord;
|
LockFreeQueue<shm_packet_t> *remoteQueue;
|
hashtable_t *hashtable = mm_get_hashtable();
|
|
if( sockt->queue != NULL)
|
goto LABEL_PUSH;
|
|
// if(hashtable_get_queue_count(hashtable) > QUEUE_COUNT_LIMIT) {
|
// return EBUS_EXCEED_LIMIT;
|
// }
|
|
{
|
if ((rv = pthread_mutex_lock(&(sockt->mutex))) != 0)
|
err_exit(rv, "shm_sendto : pthread_mutex_lock");
|
|
if (sockt->queue == NULL) {
|
if (sockt->key == 0) {
|
sockt->key = hashtable_alloc_key(hashtable);
|
}
|
sockt->queue = shm_socket_bind_queue( sockt->key, sockt->force_bind);
|
if(sockt->queue == NULL ) {
|
logger->error("%s. key = %d", bus_strerror(EBUS_KEY_INUSED), sockt->key);
|
if ((rv = pthread_mutex_unlock(&(sockt->mutex))) != 0)
|
err_exit(rv, "shm_sendto : pthread_mutex_unlock");
|
return EBUS_KEY_INUSED;
|
}
|
|
// 标记key对应的状态 ，为opened
|
stRecord.status = SHM_QUEUE_ST_OPENED;
|
stRecord.createTime = time(NULL);
|
shmQueueStMap->insert({sockt->key, stRecord});
|
|
}
|
|
if ((rv = pthread_mutex_unlock(&(sockt->mutex))) != 0)
|
err_exit(rv, "shm_sendto : pthread_mutex_unlock");
|
|
}
|
|
|
LABEL_PUSH:
|
if (sendpak->action != BUS_ACTION_STOP && key == sockt->key) {
|
logger->error( "can not send to your self!");
|
return EBUS_SENDTO_SELF;
|
}
|
|
// 检查key标记的状态
|
auto it = shmQueueStMap->find(key);
|
if(it != shmQueueStMap->end()) {
|
if(it->second.status == SHM_QUEUE_ST_CLOSED) {
|
// key对应的状态是关闭的
|
goto ERR_CLOSED;
|
}
|
}
|
|
remoteQueue = shm_socket_attach_queue(key);
|
|
if (remoteQueue == NULL ) {
|
goto ERR_CLOSED;
|
} else if(remoteQueue->isClosed()) {
|
goto ERR_CLOSED;
|
}
|
|
sendpak->key = sockt->key;
|
rv = remoteQueue->push(*sendpak, timeout, flag);
|
|
if(rv != 0) {
|
mm_free(sendpak->buf);
|
}
|
if(rv == ETIMEDOUT) {
|
return EBUS_TIMEOUT;
|
}
|
return rv;
|
|
ERR_CLOSED:
|
logger->error("sendto key %d failed, %s", key, bus_strerror(EBUS_CLOSED));
|
return EBUS_CLOSED;
|
|
}
|
|
// 短连接方式接受
|
static int shm_recvpakfrom(shm_socket_t *sockt, shm_packet_t *_recvpak , const struct timespec *timeout, int flag) {
|
int rv;
|
shm_queue_status_t stRecord;
|
hashtable_t *hashtable = mm_get_hashtable();
|
shm_packet_t recvpak;
|
|
if( sockt->queue != NULL)
|
goto LABEL_POP;
|
|
// if(hashtable_get_queue_count(hashtable) > QUEUE_COUNT_LIMIT) {
|
// return EBUS_EXCEED_LIMIT;
|
// }
|
|
{
|
if ((rv = pthread_mutex_lock(&(sockt->mutex))) != 0)
|
err_exit(rv, "shm_recvfrom : pthread_mutex_lock");
|
|
|
if (sockt->key == 0) {
|
sockt->key = hashtable_alloc_key(hashtable);
|
}
|
sockt->queue = shm_socket_bind_queue( sockt->key, sockt->force_bind);
|
if(sockt->queue == NULL ) {
|
logger->error("%s. key = %d", bus_strerror(EBUS_KEY_INUSED), sockt->key);
|
if ((rv = pthread_mutex_unlock(&(sockt->mutex))) != 0)
|
err_exit(rv, "shm_recvfrom : pthread_mutex_unlock");
|
return EBUS_KEY_INUSED;
|
}
|
|
// 标记key对应的状态 ，为opened
|
stRecord.status = SHM_QUEUE_ST_OPENED;
|
stRecord.createTime = time(NULL);
|
shmQueueStMap->insert({sockt->key, stRecord});
|
|
if ((rv = pthread_mutex_unlock(&(sockt->mutex))) != 0)
|
err_exit(rv, "shm_recvfrom : pthread_mutex_unlock");
|
|
}
|
|
LABEL_POP:
|
|
|
rv = sockt->queue->pop(recvpak, timeout, flag);
|
if(rv != 0) {
|
if(rv == ETIMEDOUT) {
|
return EBUS_TIMEOUT;
|
}
|
return rv;
|
}
|
|
|
if(recvpak.action == BUS_ACTION_STOP) {
|
return EBUS_STOPED;
|
}
|
*_recvpak = recvpak;
|
return 0;
|
}
|
|
