void punsubscribeCommand(redisClient *c) {
if (c->argc == 1) {
pubsubUnsubscribeAllPatterns(c,1);
} else {
int j;
for (j = 1; j < c->argc; j++)
pubsubUnsubscribePattern(c,c->argv[j],1);
}
}
void punsubscribeCommand(client *c) {
if (c->argc == 1) {
pubsubUnsubscribeAllPatterns(c,1);
} else {
int j;
for (j = 1; j < c->argc; j++)
pubsubUnsubscribePattern(c,c->argv[j],1);
}
if (clientSubscriptionsCount(c) == 0) c->flags &= ~CLIENT_PUBSUB;
}
void freeClient(redisClient *c) {
listNode *ln;
/* Note that if the client we are freeing is blocked into a blocking
* call, we have to set querybuf to NULL *before* to call
* unblockClientWaitingData() to avoid processInputBuffer() will get
* called. Also it is important to remove the file events after
* this, because this call adds the READABLE event. */
sdsfree(c->querybuf);
c->querybuf = NULL;
if (c->flags & REDIS_BLOCKED)
unblockClientWaitingData(c);
/* UNWATCH all the keys */
unwatchAllKeys(c);
listRelease(c->watched_keys);
/* Unsubscribe from all the pubsub channels */
pubsubUnsubscribeAllChannels(c,0);
pubsubUnsubscribeAllPatterns(c,0);
dictRelease(c->pubsub_channels);
listRelease(c->pubsub_patterns);
/* Obvious cleanup */
aeDeleteFileEvent(server.el,c->fd,AE_READABLE);
aeDeleteFileEvent(server.el,c->fd,AE_WRITABLE);
listRelease(c->reply);
freeClientArgv(c);
close(c->fd);
/* Remove from the list of clients */
ln = listSearchKey(server.clients,c);
redisAssert(ln != NULL);
listDelNode(server.clients,ln);
/* Remove from the list of clients waiting for swapped keys, or ready
* to be restarted, but not yet woken up again. */
if (c->flags & REDIS_IO_WAIT) {
redisAssert(server.vm_enabled);
if (listLength(c->io_keys) == 0) {
ln = listSearchKey(server.io_ready_clients,c);
/* When this client is waiting to be woken up (REDIS_IO_WAIT),
* it should be present in the list io_ready_clients */
redisAssert(ln != NULL);
listDelNode(server.io_ready_clients,ln);
} else {
while (listLength(c->io_keys)) {
ln = listFirst(c->io_keys);
dontWaitForSwappedKey(c,ln->value);
}
}
server.vm_blocked_clients--;
}
listRelease(c->io_keys);
/* Master/slave cleanup.
* Case 1: we lost the connection with a slave. */
if (c->flags & REDIS_SLAVE) {
if (c->replstate == REDIS_REPL_SEND_BULK && c->repldbfd != -1)
close(c->repldbfd);
list *l = (c->flags & REDIS_MONITOR) ? server.monitors : server.slaves;
ln = listSearchKey(l,c);
redisAssert(ln != NULL);
listDelNode(l,ln);
}
/* Case 2: we lost the connection with the master. */
if (c->flags & REDIS_MASTER) {
server.master = NULL;
server.replstate = REDIS_REPL_CONNECT;
/* Since we lost the connection with the master, we should also
* close the connection with all our slaves if we have any, so
* when we'll resync with the master the other slaves will sync again
* with us as well. Note that also when the slave is not connected
* to the master it will keep refusing connections by other slaves. */
while (listLength(server.slaves)) {
ln = listFirst(server.slaves);
freeClient((redisClient*)ln->value);
}
}
/* Release memory */
zfree(c->argv);
zfree(c->mbargv);
freeClientMultiState(c);
zfree(c);
}
void freeClient(redisClient *c) {
listNode *ln;
/* Note that if the client we are freeing is blocked into a blocking
* call, we have to set querybuf to NULL *before* to call
* unblockClientWaitingData() to avoid processInputBuffer() will get
* called. Also it is important to remove the file events after
* this, because this call adds the READABLE event. */
sdsfree(c->querybuf);
c->querybuf = NULL;
if (c->flags & REDIS_BLOCKED)
unblockClientWaitingData(c);
/* UNWATCH all the keys */
unwatchAllKeys(c);
listRelease(c->watched_keys);
/* Unsubscribe from all the pubsub channels */
pubsubUnsubscribeAllChannels(c,0);
pubsubUnsubscribeAllPatterns(c,0);
dictRelease(c->pubsub_channels);
listRelease(c->pubsub_patterns);
/* Obvious cleanup */
aeDeleteFileEvent(server.el,c->fd,AE_READABLE);
aeDeleteFileEvent(server.el,c->fd,AE_WRITABLE);
listRelease(c->reply);
freeClientArgv(c);
close(c->fd);
/* Remove from the list of clients */
ln = listSearchKey(server.clients,c);
redisAssert(ln != NULL);
listDelNode(server.clients,ln);
/* Remove from the list of clients that are now ready to be restarted
* after waiting for swapped keys */
if (c->flags & REDIS_IO_WAIT && listLength(c->io_keys) == 0) {
ln = listSearchKey(server.io_ready_clients,c);
if (ln) {
listDelNode(server.io_ready_clients,ln);
server.vm_blocked_clients--;
}
}
/* Remove from the list of clients waiting for swapped keys */
while (server.vm_enabled && listLength(c->io_keys)) {
ln = listFirst(c->io_keys);
dontWaitForSwappedKey(c,ln->value);
}
listRelease(c->io_keys);
/* Master/slave cleanup */
if (c->flags & REDIS_SLAVE) {
if (c->replstate == REDIS_REPL_SEND_BULK && c->repldbfd != -1)
close(c->repldbfd);
list *l = (c->flags & REDIS_MONITOR) ? server.monitors : server.slaves;
ln = listSearchKey(l,c);
redisAssert(ln != NULL);
listDelNode(l,ln);
}
if (c->flags & REDIS_MASTER) {
server.master = NULL;
server.replstate = REDIS_REPL_CONNECT;
}
/* Release memory */
zfree(c->argv);
zfree(c->mbargv);
freeClientMultiState(c);
zfree(c);
}