mirror of
https://github.com/mongodb/mongo.git
synced 2024-11-30 00:56:44 +01:00
51 lines
1.4 KiB
C++
51 lines
1.4 KiB
C++
// @file logfile.h simple file log writing / journaling
|
|
|
|
/**
|
|
* Copyright (C) 2010 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/>.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
namespace mongo {
|
|
|
|
class LogFile {
|
|
public:
|
|
/** create the file and open. must not already exist.
|
|
throws UserAssertion on i/o error
|
|
*/
|
|
LogFile(string name);
|
|
|
|
/** closes */
|
|
~LogFile();
|
|
|
|
/** append to file. does not return until sync'd. uses direct i/o when possible.
|
|
throws UserAssertion on an i/o error
|
|
note direct i/o may have alignment requirements
|
|
*/
|
|
void synchronousAppend(const void *buf, size_t len);
|
|
|
|
const string _name;
|
|
|
|
private:
|
|
#if defined(_WIN32)
|
|
typedef HANDLE fd_type;
|
|
#else
|
|
typedef int fd_type;
|
|
#endif
|
|
fd_type _fd;
|
|
};
|
|
|
|
}
|