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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/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#pragma once
#include "mongo/pch.h"
#include "mongo/db/client.h"
#include "mongo/db/curop.h"
#include "mongo/db/catalog/database_holder.h"
#include "mongo/db/pdfile.h"
#include "mongo/util/net/message.h"
namespace mongo {
// todo: relocked is being called when there was no unlock below.
// that is weird.
/**
* Releases the current lock for the duration of its lifetime.
*
* WARNING: do not put in a smart pointer or any other class. If you absolutely must, you need
* to add the throw(DBException) annotation to it's destructor.
*/
struct dbtemprelease {
Client::Context * _context;
scoped_ptr<Lock::TempRelease> tr;
dbtemprelease(LockState* lockState) {
const Client& c = cc();
_context = c.getContext();
verify( Lock::isLocked() );
if( Lock::nested() ) {
massert(10298 , "can't temprelease nested lock", false);
}
if ( _context ) {
_context->unlocked();
}
tr.reset(new Lock::TempRelease(lockState));
verify( c.curop() );
c.curop()->yielded();
}
~dbtemprelease() throw(DBException) {
tr.reset();
if ( _context )
_context->relocked();
}
};
extern void (*snmpInit)();
} // namespace mongo
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