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Check dcb->status and set new state with writeqlock on.

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This commit is contained in:
vraatikka 2013-08-19 19:41:47 +03:00
parent c5ed473ab7
commit 2ad0b12d79
1 changed files with 22 additions and 7 deletions
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29
server/modules/protocol/mysql_client.c
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@ -491,6 +491,16 @@ int gw_read_client_event(DCB* dcb) {
MySQLProtocol *protocol = NULL;
int b = -1;
spinlock_acquire(&dcb->writeqlock);
if (dcb->state == DCB_STATE_DISCONNECTED ||
dcb->state == DCB_STATE_FREED ||
dcb->state == DCB_STATE_ZOMBIE)
{
spinlock_release(&dcb->writeqlock);
return 1;
}
if (dcb) {
protocol = DCB_PROTOCOL(dcb, MySQLProtocol);
}
@ -500,24 +510,29 @@ int gw_read_client_event(DCB* dcb) {
errno = 0;
skygw_log_write(
LOGFILE_ERROR,
"%lu [gw_read_client_event] Setting FIONREAD for %d failed. "
"errno %d, %s",
"%lu [gw_read_client_event] Setting FIONREAD for fd "
"%d failed. errno %d, %s. dcb->state = %d",
pthread_self(),
dcb->fd,
eno ,
strerror(eno));
eno,
strerror(eno),
dcb->state);
skygw_log_write(
LOGFILE_TRACE,
"%lu [gw_read_client_event] Setting FIONREAD for %d failed. "
"errno %d, %s",
"%lu [gw_read_client_event] Setting FIONREAD for fd %d "
"failed. errno %d, %s. dcb->state = %d",
pthread_self(),
dcb->fd,
eno ,
strerror(eno));
strerror(eno),
dcb->state);
spinlock_release(&dcb->writeqlock);
return 1;
} else {
//fprintf(stderr, "Client IOCTL FIONREAD bytes to read = %i\n", b);
}
spinlock_release(&dcb->writeqlock);
switch (protocol->state) {
case MYSQL_AUTH_SENT: