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/* Copyright (C) 2009 Sun Microsystems
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 */
#ifndef PLUGIN_MULTI_THREAD_MULTI_THREAD_H
#define PLUGIN_MULTI_THREAD_MULTI_THREAD_H
#include <drizzled/atomics.h>
#include <drizzled/gettext.h>
#include <drizzled/error.h>
#include <drizzled/plugin/scheduler.h>
#include "drizzled/internal/my_sys.h"
#include <drizzled/sql_parse.h>
#include <drizzled/session.h>
#include <string>
class MultiThreadScheduler: public drizzled::plugin::Scheduler
{
private:
drizzled::atomic<uint32_t> thread_count;
pthread_attr_t attr;
public:
MultiThreadScheduler(const char *name_arg):
Scheduler(name_arg)
{
struct sched_param tmp_sched_param;
memset(&tmp_sched_param, 0, sizeof(struct sched_param));
/* Setup attribute parameter for session threads. */
(void) pthread_attr_init(&attr);
(void) pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM);
tmp_sched_param.sched_priority= WAIT_PRIOR;
(void) pthread_attr_setschedparam(&attr, &tmp_sched_param);
thread_count= 0;
}
~MultiThreadScheduler();
bool addSession(drizzled::Session *session);
void killSessionNow(drizzled::Session *session);
void runSession(drizzled::Session *session)
{
if (drizzled::internal::my_thread_init())
{
session->disconnect(drizzled::ER_OUT_OF_RESOURCES, true);
statistic_increment(drizzled::aborted_connects, &LOCK_status);
killSessionNow(session);
}
session->thread_stack= (char*) &session;
session->run();
killSessionNow(session);
}
};
#endif /* PLUGIN_MULTI_THREAD_MULTI_THREAD_H */
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