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Merge branch '2.3' into develop

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This commit is contained in:
Markus Mäkelä
2019-01-17 10:55:27 +02:00
parent a3fa2f8111 92b50196ed
commit ebbb8a771c
2 changed files with 31 additions and 35 deletions
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62
server/modules/protocol/MySQL/mariadbclient/mysql_client.cc
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@ -1399,44 +1399,40 @@ int gw_MySQLAccept(DCB* client_dcb)
static void gw_process_one_new_client(DCB* client_dcb)
{
/**
* Set new descriptor to event set. At the same time,
* change state to DCB_STATE_POLLING so that
* thread which wakes up sees correct state.
* The worker who owns the DCB is chosen here, before any epoll events for it can be processed.
* This guarantees that the first event for the DCB is processed only after the following
* task has been processed by the owning thread.
*/
if (poll_add_dcb(client_dcb) == -1)
{
/* Send a custom error as MySQL command reply */
mysql_send_custom_error(client_dcb,
1,
0,
"MaxScale encountered system limit while "
"attempting to register on an epoll instance.");
mxs::RoutingWorker* worker = mxs::RoutingWorker::pick_worker();
/** close client_dcb */
dcb_close(client_dcb);
worker->execute([=]() {
client_dcb->protocol = mysql_protocol_init(client_dcb, client_dcb->fd);
MXS_ABORT_IF_NULL(client_dcb->protocol);
/** Previous state is recovered in poll_add_dcb. */
MXS_ERROR("Failed to add dcb %p for fd %d to epoll set.",
client_dcb,
client_dcb->fd);
return;
}
else
{
// Move the rest of the initialization process to the owning worker
mxs::RoutingWorker* worker = static_cast<mxs::RoutingWorker*>(client_dcb->owner);
/**
* Set new descriptor to event set. At the same time,
* change state to DCB_STATE_POLLING so that
* thread which wakes up sees correct state.
*/
if (poll_add_dcb(client_dcb) == -1)
{
/* Send a custom error as MySQL command reply */
mysql_send_custom_error(client_dcb, 1, 0,
"MaxScale encountered system limit while "
"attempting to register on an epoll instance.");
worker->execute([=]() {
client_dcb->protocol = mysql_protocol_init(client_dcb, client_dcb->fd);
MXS_ABORT_IF_NULL(client_dcb->protocol);
/** close client_dcb */
dcb_close(client_dcb);
/** Previous state is recovered in poll_add_dcb. */
MXS_ERROR("Failed to add dcb %p for fd %d to epoll set.",
client_dcb, client_dcb->fd);
}
else
{
MySQLSendHandshake(client_dcb);
}, mxs::RoutingWorker::EXECUTE_AUTO);
MXS_DEBUG("Added dcb %p for fd %d to epoll set.",
client_dcb,
client_dcb->fd);
}
return;
}
}, mxs::RoutingWorker::EXECUTE_AUTO);
}
static int gw_error_client_event(DCB* dcb)