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Added DCB_STATE_XXX in EPOLLIN/EPOLLOUT handlers and in accept()

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This commit is contained in:
Massimiliano Pinto
2013-08-27 10:08:03 +02:00
parent 49036894f5
commit d0d68a69ca
1 changed files with 22 additions and 10 deletions
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32
server/modules/protocol/mysql_client.c
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@ -501,9 +501,9 @@ int gw_read_client_event(DCB* dcb) {
return 1;
}
if (dcb) {
protocol = DCB_PROTOCOL(dcb, MySQLProtocol);
}
dcb->state = DCB_STATE_PROCESSING;
protocol = DCB_PROTOCOL(dcb, MySQLProtocol);
if (ioctl(dcb->fd, FIONREAD, &b)) {
int eno = errno;
@ -517,8 +517,10 @@ int gw_read_client_event(DCB* dcb) {
eno,
strerror(eno),
dcb->state);
spinlock_release(&dcb->writeqlock);
dcb->state = DCB_STATE_POLLING;
spinlock_release(&dcb->writeqlock);
return 1;
} else {
//fprintf(stderr, "Client IOCTL FIONREAD bytes to read = %i\n", b);
@ -543,8 +545,10 @@ int gw_read_client_event(DCB* dcb) {
// without closing
//////////////////////////////////////////////////////
if ((ret = gw_read_gwbuff(dcb, &gw_buffer, b)) != 0)
if ((ret = gw_read_gwbuff(dcb, &gw_buffer, b)) != 0) {
dcb->state = DCB_STATE_POLLING;
return ret;
}
// example with consume, assuming one buffer only ...
queue = gw_buffer;
@ -608,8 +612,10 @@ int gw_read_client_event(DCB* dcb) {
//////////////////////////////////////////////////////
// read and handle errors & close, or return if busy
//////////////////////////////////////////////////////
if ((ret = gw_read_gwbuff(dcb, &gw_buffer, b)) != 0)
if ((ret = gw_read_gwbuff(dcb, &gw_buffer, b)) != 0) {
dcb->state = DCB_STATE_POLLING;
return ret;
}
/* Now, we are assuming in the first buffer there is the information form mysql command */
@ -643,7 +649,7 @@ int gw_read_client_event(DCB* dcb) {
mysql_send_custom_error(dcb, 1, 0, "Connection to backend lost");
protocol->state = MYSQL_IDLE;
dcb->state = DCB_STATE_POLLING;
return 1;
}
}
@ -683,6 +689,8 @@ int gw_read_client_event(DCB* dcb) {
break;
}
dcb->state = DCB_STATE_POLLING;
return 0;
}
@ -701,10 +709,13 @@ int gw_write_client_event(DCB *dcb) {
return 1;
}
dcb->state = DCB_STATE_PROCESSING;
if (dcb->protocol) {
protocol = DCB_PROTOCOL(dcb, MySQLProtocol);
} else {
fprintf(stderr, "DCB protocol is NULL, return\n");
dcb->state = DCB_STATE_POLLING;
return 1;
}
@ -713,9 +724,11 @@ int gw_write_client_event(DCB *dcb) {
w = dcb_drain_writeq(dcb);
dcb->state = DCB_STATE_POLLING;
return 1;
}
dcb->state = DCB_STATE_POLLING;
return 1;
}
@ -862,12 +875,11 @@ int gw_MySQLAccept(DCB *listener) {
/**
* Set new descriptor to event set. Before that
* change state to DCB_STATE_PROCESSING so that
* change state to DCB_STATE_POLLING so that
* thread which wakes up sees correct state.
*
*/
client->state = DCB_STATE_POLLING;
client->state = DCB_STATE_PROCESSING;
if (poll_add_dcb(client) == -1)
{