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KILL [CONNECTION | QUERY] support, part1

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Preparation for adding KILL syntax support.
Session id changed to uint32 everywhere. Added atomic op.
Session id can be acquired before session_alloc().
Added session_alloc_with_id(), which is given a session id number.
Worker object has a session_id->SESSION* mapping, not used yet.
This commit is contained in:
Esa Korhonen
2017-04-27 18:09:06 +03:00
parent 46da2d3ad2
commit bfd94c2b31
13 changed files with 120 additions and 53 deletions
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11
server/modules/protocol/MySQL/MySQLClient/mysql_client.c
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@ -229,7 +229,6 @@ int MySQLSendHandshake(DCB* dcb)
char server_scramble[GW_MYSQL_SCRAMBLE_SIZE + 1] = "";
char *version_string;
int len_version_string = 0;
int id_num;
bool is_maria = false;
@ -275,10 +274,9 @@ int MySQLSendHandshake(DCB* dcb)
memcpy(mysql_filler_ten + 6, &new_flags, sizeof(new_flags));
}
// thread id, now put thePID
id_num = getpid() + dcb->fd;
gw_mysql_set_byte4(mysql_thread_id_num, id_num);
// Get the equivalent of the server process id.
protocol->tid = session_get_next_id();
gw_mysql_set_byte4(mysql_thread_id_num, protocol->tid);
memcpy(mysql_scramble_buf, server_scramble, 8);
memcpy(mysql_plugin_data, server_scramble + 8, 12);
@ -702,7 +700,8 @@ gw_read_do_authentication(DCB *dcb, GWBUF *read_buffer, int nbytes_read)
* is changed so that future data will go through the
* normal data handling function instead of this one.
*/
MXS_SESSION *session = session_alloc(dcb->service, dcb);
MXS_SESSION *session =
session_alloc_with_id(dcb->service, dcb, protocol->tid);
if (session != NULL)
{