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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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
#ifndef PLUGIN_SINGLE_THREAD_SINGLE_THREAD_H
#define PLUGIN_SINGLE_THREAD_SINGLE_THREAD_H
#include <drizzled/gettext.h>
#include <drizzled/error.h>
#include <drizzled/plugin/scheduler.h>
#include <drizzled/sql_parse.h>
#include <drizzled/session.h>
#include <string>
/**
* Simple scheduler that uses the main thread to handle the request. This
* should only be used for debugging.
*/
class SingleThreadScheduler : public drizzled::plugin::Scheduler
{
public:
SingleThreadScheduler(const char *name_arg) :
Scheduler(name_arg) {}
/* When we enter this function, LOCK_thread_count is held! */
virtual bool addSession(Session *session)
{
if (my_thread_init())
{
session->disconnect(ER_OUT_OF_RESOURCES, true);
statistic_increment(aborted_connects, &LOCK_status);
return true;
}
/*
This is not the real thread start beginning, but there is not an easy
way to find it.
*/
session->thread_stack= (char *)&session;
session->run();
killSessionNow(session);
return false;
}
virtual void killSessionNow(Session *session)
{
unlink_session(session);
my_thread_end();
}
};
#endif /* PLUGIN_SINGLE_THREAD_SINGLE_THREAD_H */
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