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server.current_client fix and minor refactoring.

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Thanks to @codeslinger (Toby DiPasquale) for identifying the issue.

Related to issue #2409.
This commit is contained in:
antirez 2015-02-26 18:31:06 +01:00
parent 832b0c7cce
commit 7e6b4ea67b
2 changed files with 11 additions and 17 deletions
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2
src/blocked.c
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@ -118,9 +118,7 @@ void processUnblockedClients(void) {
/* Process remaining data in the input buffer. */
if (c->querybuf && sdslen(c->querybuf) > 0) {
server.current_client = c;
processInputBuffer(c);
server.current_client = NULL;
}
}
}

26
src/networking.c
View File

@ -1106,18 +1106,19 @@ int processMultibulkBuffer(redisClient *c) {
}
void processInputBuffer(redisClient *c) {
server.current_client = c;
/* Keep processing while there is something in the input buffer */
while(sdslen(c->querybuf)) {
/* Return if clients are paused. */
if (!(c->flags & REDIS_SLAVE) && clientsArePaused()) return;
if (!(c->flags & REDIS_SLAVE) && clientsArePaused()) break;
/* Immediately abort if the client is in the middle of something. */
if (c->flags & REDIS_BLOCKED) return;
if (c->flags & REDIS_BLOCKED) break;
/* REDIS_CLOSE_AFTER_REPLY closes the connection once the reply is
* written to the client. Make sure to not let the reply grow after
* this flag has been set (i.e. don't process more commands). */
if (c->flags & REDIS_CLOSE_AFTER_REPLY) return;
if (c->flags & REDIS_CLOSE_AFTER_REPLY) break;
/* Determine request type when unknown. */
if (!c->reqtype) {
@ -1145,6 +1146,7 @@ void processInputBuffer(redisClient *c) {
resetClient(c);
}
}
server.current_client = NULL;
}
void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask) {
@ -1154,7 +1156,6 @@ void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask) {
REDIS_NOTUSED(el);
REDIS_NOTUSED(mask);
server.current_client = c;
readlen = REDIS_IOBUF_LEN;
/* If this is a multi bulk request, and we are processing a bulk reply
* that is large enough, try to maximize the probability that the query
@ -1176,7 +1177,7 @@ void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask) {
nread = read(fd, c->querybuf+qblen, readlen);
if (nread == -1) {
if (errno == EAGAIN) {
nread = 0;
return;
} else {
redisLog(REDIS_VERBOSE, "Reading from client: %s",strerror(errno));
freeClient(c);
@ -1187,15 +1188,11 @@ void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask) {
freeClient(c);
return;
}
if (nread) {
sdsIncrLen(c->querybuf,nread);
c->lastinteraction = server.unixtime;
if (c->flags & REDIS_MASTER) c->reploff += nread;
server.stat_net_input_bytes += nread;
} else {
server.current_client = NULL;
return;
}
sdsIncrLen(c->querybuf,nread);
c->lastinteraction = server.unixtime;
if (c->flags & REDIS_MASTER) c->reploff += nread;
server.stat_net_input_bytes += nread;
if (sdslen(c->querybuf) > server.client_max_querybuf_len) {
sds ci = catClientInfoString(sdsempty(),c), bytes = sdsempty();
@ -1207,7 +1204,6 @@ void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask) {
return;
}
processInputBuffer(c);
server.current_client = NULL;
}
void getClientsMaxBuffers(unsigned long *longest_output_list,