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Modified dcb_read return: n = 0 means 0 bytes read without errors

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if (rc < 0) is now used testing dcb_read() return, instead of if (rc <= 0)
This commit is contained in:
Massimiliano Pinto
2013-09-27 19:24:23 +02:00
parent e03d2b3ffe
commit c48dd6028f
2 changed files with 9 additions and 7 deletions
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9
server/modules/protocol/mysql_backend.c
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@ -40,6 +40,7 @@
server replies to client via router->clientReply
* 04/09/2013 Massimiliano Pinto Added dcb->session and dcb->session->client checks for NULL
* 12/09/2013 Massimiliano Pinto Added checks in gw_read_backend_event() for gw_read_backend_handshake
* 27/09/2013 Massimiliano Pinto Changed in gw_read_backend_event the check for dcb_read(), now is if rc < 0
*
*/
@ -312,12 +313,10 @@ static int gw_read_backend_event(DCB *dcb) {
/* read available backend data */
rc = dcb_read(dcb, &head);
if (rc <= 0) {
if (rc < 0) {
/**
* Backend generated EPOLLIN event and if there is
* nothing to read or backend failed, connection
* must be closed to avoid backend dcb from getting
* hanged.
* Backend generated EPOLLIN event and if backend has failed, connection
* must be closed to avoid backend dcb from getting hanged.
*/
(dcb->func).close(dcb);
rc = 0;