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/**
* Copyright (C) 2008 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "stdafx.h"
#include "goodies.h"
#include "background.h"
namespace mongo {
BackgroundJob *BackgroundJob::grab = 0;
boost::mutex BackgroundJob::mutex;
/* static */
void BackgroundJob::thr() {
assert( grab );
BackgroundJob *us = grab;
assert( us->state == NotStarted );
us->state = Running;
grab = 0;
us->run();
us->state = Done;
if ( us->deleteSelf )
delete us;
}
BackgroundJob& BackgroundJob::go() {
boostlock bl(mutex);
assert( grab == 0 );
grab = this;
boost::thread t(thr);
while ( grab )
sleepmillis(2);
return *this;
}
bool BackgroundJob::wait(int msMax) {
assert( state != NotStarted );
int ms = 1;
unsigned long long start = jsTime();
while ( state != Done ) {
sleepmillis(ms);
if ( ms < 1000 )
ms = ms * 2;
if ( msMax && ( int( jsTime() - start ) > msMax) )
return false;
}
return true;
}
} // namespace mongo
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