1
/* Copyright (C) 2009 Sun Microsystems
3
This program is free software; you can redistribute it and/or modify
4
it under the terms of the GNU General Public License as published by
5
the Free Software Foundation; version 2 of the License.
7
This program is distributed in the hope that it will be useful,
8
but WITHOUT ANY WARRANTY; without even the implied warranty of
9
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10
GNU General Public License for more details.
12
You should have received a copy of the GNU General Public License
13
along with this program; if not, write to the Free Software
14
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
16
#include <drizzled/server_includes.h>
17
#include <drizzled/atomics.h>
18
#include <drizzled/gettext.h>
19
#include <drizzled/error.h>
20
#include <drizzled/plugin/scheduler.h>
21
#include <drizzled/sql_parse.h>
22
#include <drizzled/session.h>
25
class MultiThreadScheduler: public drizzled::plugin::Scheduler
28
drizzled::atomic<uint32_t> thread_count;
32
MultiThreadScheduler(const char *name_arg):
35
struct sched_param tmp_sched_param;
37
memset(&tmp_sched_param, 0, sizeof(struct sched_param));
39
/* Setup attribute parameter for session threads. */
40
(void) pthread_attr_init(&attr);
41
(void) pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
42
pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM);
44
tmp_sched_param.sched_priority= WAIT_PRIOR;
45
(void) pthread_attr_setschedparam(&attr, &tmp_sched_param);
50
~MultiThreadScheduler();
51
bool addSession(Session *session);
52
void killSessionNow(Session *session);
54
void runSession(Session *session)
58
session->disconnect(ER_OUT_OF_RESOURCES, true);
59
statistic_increment(aborted_connects, &LOCK_status);
60
killSessionNow(session);
63
session->thread_stack= (char*) &session;
65
killSessionNow(session);