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ruanhaishen
redis
Commits
fdb3be93
Commit
fdb3be93
authored
Sep 30, 2015
by
antirez
Browse files
Refactoring: new function to test if client has pending output.
parent
825f65d2
Changes
3
Hide whitespace changes
Inline
Side-by-side
src/networking.c
View file @
fdb3be93
...
...
@@ -163,9 +163,11 @@ int prepareClientToWrite(client *c) {
if (c->fd <= 0) return C_ERR; /* Fake client for AOF loading. */
/* Only install the handler if not already installed and, in case of
* slaves, if the client can actually receive writes. */
if (c->bufpos == 0 && listLength(c->reply) == 0 &&
/* Schedule the client to write the output buffers to the socket only
* if not already done (there were no pending writes alreday and the client
* was yet not flagged), and, for slaves, if the slave can actually
* receive writes at this stage. */
if (!clientHasPendingReplies(c) &&
!(c->flags & CLIENT_PENDING_WRITE) &&
(c->replstate == REPL_STATE_NONE ||
(c->replstate == SLAVE_STATE_ONLINE && !c->repl_put_online_on_ack)))
...
...
@@ -591,6 +593,12 @@ void copyClientOutputBuffer(client *dst, client *src) {
dst->reply_bytes = src->reply_bytes;
}
/* Return true if the specified client has pending reply buffers to write to
* the socket. */
int clientHasPendingReplies(client *c) {
return c->bufpos || listLength(c->reply);
}
#define MAX_ACCEPTS_PER_CALL 1000
static void acceptCommonHandler(int fd, int flags) {
client *c;
...
...
@@ -824,7 +832,7 @@ int writeToClient(int fd, client *c, int handler_installed) {
size_t objmem;
robj *o;
while(c
->bufpos > 0 || listLength(c->reply
)) {
while(c
lientHasPendingReplies(c
)) {
if (c->bufpos > 0) {
nwritten = write(fd,c->buf+c->sentlen,c->bufpos-c->sentlen);
if (nwritten <= 0) break;
...
...
@@ -890,7 +898,7 @@ int writeToClient(int fd, client *c, int handler_installed) {
* We just rely on data / pings received for timeout detection. */
if (!(c->flags & CLIENT_MASTER)) c->lastinteraction = server.unixtime;
}
if (
c->bufpos == 0 && listLength(c->reply) == 0
) {
if (
!clientHasPendingReplies(c)
) {
c->sentlen = 0;
if (handler_installed) aeDeleteFileEvent(server.el,c->fd,AE_WRITABLE);
...
...
@@ -929,7 +937,7 @@ void handleClientsWithPendingWrites(void) {
/* If there is nothing left, do nothing. Otherwise install
* the write handler. */
if (
(c->bufpos || listLength(c->reply)
) &&
if (
clientHasPendingReplies(c
) &&
aeCreateFileEvent(server.el, c->fd, AE_WRITABLE,
sendReplyToClient, c) == AE_ERR)
{
...
...
src/replication.c
View file @
fdb3be93
...
...
@@ -570,7 +570,7 @@ void syncCommand(client *c) {
* the client about already issued commands. We need a fresh reply
* buffer registering the differences between the BGSAVE and the current
* dataset, so that we can copy to other slaves if needed. */
if
(
li
stLength
(
c
->
reply
)
!=
0
||
c
->
bufpos
!=
0
)
{
if
(
c
li
entHasPendingReplies
(
c
)
)
{
addReplyError
(
c
,
"SYNC and PSYNC are invalid with pending output"
);
return
;
}
...
...
@@ -1924,7 +1924,7 @@ void replicationResurrectCachedMaster(int newfd) {
/* We may also need to install the write handler as well if there is
* pending data in the write buffers. */
if
(
server
.
master
->
bufpos
||
listLength
(
server
.
master
->
reply
))
{
if
(
clientHasPendingReplies
(
server
.
master
))
{
if
(
aeCreateFileEvent
(
server
.
el
,
newfd
,
AE_WRITABLE
,
sendReplyToClient
,
server
.
master
))
{
serverLog
(
LL_WARNING
,
"Error resurrecting the cached master, impossible to add the writable handler: %s"
,
strerror
(
errno
));
...
...
src/server.h
View file @
fdb3be93
...
...
@@ -1111,6 +1111,7 @@ void pauseClients(mstime_t duration);
int
clientsArePaused
(
void
);
int
processEventsWhileBlocked
(
void
);
void
handleClientsWithPendingWrites
(
void
);
int
clientHasPendingReplies
(
client
*
c
);
#ifdef __GNUC__
void
addReplyErrorFormat
(
client
*
c
,
const
char
*
fmt
,
...)
...
...
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