mariadb/include/mysql_async.h
unknown 52c84d144d MDEV-3802: Millisecond timeout support in non-blocking client library + fix incorrect blocking.
After the merge of VIO stuff from MySQL 5.6, there were some bugs left
in the non-blocking client library:

 - vio_io_wait() was introduced without any support for non-blocking operation,
   so async queries could turn into sync.

 - Timeouts were changed to milliseconds, but this was not reflected in the
   non-blocking API, also semantics was changed so signed -1 was used for
   "no timeout" rather than unsigned 0.

Fix by implementing and using my_io_wait_async() in the non-blocking case. And
by introducing a new mysql_get_timeout_value_ms() API function that provides
the timeout with millisecond granularity. The old mysql_get_timeout_value()
is kept and fixed to work correctly, converting the timeout to whole seconds.
2012-10-12 11:00:01 +02:00

38 lines
1.8 KiB
C

/* Copyright (C) 2012 MariaDB Services and Kristian Nielsen
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/* Common definitions for MariaDB non-blocking client library. */
#ifndef MYSQL_ASYNC_H
#define MYSQL_ASYNC_H
extern int my_connect_async(struct mysql_async_context *b, my_socket fd,
const struct sockaddr *name, uint namelen,
int vio_timeout);
extern ssize_t my_recv_async(struct mysql_async_context *b, int fd,
unsigned char *buf, size_t size, int timeout);
extern ssize_t my_send_async(struct mysql_async_context *b, int fd,
const unsigned char *buf, size_t size,
int timeout);
extern my_bool my_io_wait_async(struct mysql_async_context *b,
enum enum_vio_io_event event, int timeout);
#ifdef HAVE_OPENSSL
extern int my_ssl_read_async(struct mysql_async_context *b, SSL *ssl,
void *buf, int size);
extern int my_ssl_write_async(struct mysql_async_context *b, SSL *ssl,
const void *buf, int size);
#endif
#endif /* MYSQL_ASYNC_H */