mirror of
https://github.com/MariaDB/server.git
synced 2025-11-03 14:33:32 +03:00
b1dcf448ea
In order to allow thread schedulers to be dynamically loaded, it is necessary to make the following changes to the server: - Two new service interfaces - Modifications to InnoDB to inform the thread scheduler of state changes. - Changes to the VIO subsystem for checking if data is available on a socket. - Elimination of remains of the old thread pool implementation. The two new service interfaces introduces are: my_thread_scheduler A service interface to register a thread scheduler. thd_wait A service interface to inform thread scheduler that the thread is about to start waiting. In addition, the patch adds code that: - Add a call to thd_wait for table locks in mysys thd_lock.c by introducing a set function that can be used to set a callback to be used when waiting on a lock and resuming from waiting. - Calling the mysys set function from the server to set the callbacks correctly.
59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
/* Copyright (C) 2009 Sun Microsystems, Inc.
|
|
|
|
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 */
|
|
|
|
/* support for Services */
|
|
#include <service_versions.h>
|
|
|
|
struct st_service_ref {
|
|
const char *name;
|
|
uint version;
|
|
void *service;
|
|
};
|
|
|
|
static struct my_snprintf_service_st my_snprintf_handler = {
|
|
my_snprintf,
|
|
my_vsnprintf
|
|
};
|
|
|
|
static struct thd_alloc_service_st thd_alloc_handler= {
|
|
thd_alloc,
|
|
thd_calloc,
|
|
thd_strdup,
|
|
thd_strmake,
|
|
thd_memdup,
|
|
thd_make_lex_string
|
|
};
|
|
|
|
static struct thd_wait_service_st thd_wait_handler= {
|
|
thd_wait_begin,
|
|
thd_wait_end
|
|
};
|
|
|
|
static struct my_thread_scheduler_service my_thread_scheduler_handler= {
|
|
my_thread_scheduler_set,
|
|
my_thread_scheduler_reset,
|
|
};
|
|
|
|
|
|
static struct st_service_ref list_of_services[]=
|
|
{
|
|
{ "my_snprintf_service", VERSION_my_snprintf, &my_snprintf_handler },
|
|
{ "thd_alloc_service", VERSION_thd_alloc, &thd_alloc_handler },
|
|
{ "thd_wait_service", VERSION_thd_wait, &thd_wait_handler },
|
|
{ "my_thread_scheduler_service",
|
|
VERSION_my_thread_scheduler, &my_thread_scheduler_handler },
|
|
};
|
|
|