Added an extra parameter to all calls to timeout().
1 means we want to set the write timeout
0 means we wnat to set the read timeout
viossl.c:
Add which parameter to ssl timeout routine
vio_priv.h:
Added which parameter to vio_ignore_timeout and vio_ssl_timeout
violite.h:
Add which parameter to vio_timeout sigs
net_serv.cc:
Use proper which code in call to vio_timeout to set the proper timeout
viosocket.c:
Set the appropriate timeout in vio_timeout
The patch implements the idea suggested by Olaf van der Spek in
thread "Client: many small reads?" (internals@lists.mysql.com).
Now small reads performed by the client library are buffered.
The buffering gives up to 2 times speedup when retrieving
one-column tables.
it's crucial to disable Nagle algorithm on client for no-reply commands
(like mysql_stmt_free) to always work fast.
Nagle algorithm instructs the sender to buffer (store) data if any
unacknowledged data is outstanding and the size of to-send data is less than
the network segment. It was exactly the case with COM_STMT_CLOSE after
COM_STMT_PREPARE, so the client was waiting for Nagle timer to expire or
for ACK from the server, while the server was holding up ACK because of
delayed acknowledgement algorithm.
The tricky part is that we have been already disabling Nagle
algorithm (by setting TCP_NODELAY)
almost everywhere except Windows (and maybe Netware).
It is the reason why the bug was repeatable only with Windows client.
Add support for VARCHAR with 1 or 2 length bytes
Enable VARCHAR packing in MyISAM files (previous patch didn't pack data properly)
Give error if we got problems in temporary tables during a SELECT
Don't use new table generated by ALTER TABLE if index generation fails
Fixed wrong call by range_end() (Could cause an ASSERT in debug mode)
(continue)
added event_conn_closed
replaced WaitForSingleObject on WaitForMultipleObjects
inserted a check in vio_close()
added SetEvent() for event_conn_closed
Signed auto_increment keys for HASH tables (like for MyISAM tables in 4.0)
nitialize system_charset_info() early. Fixes core dump when starting windows service
