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// @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);
private:
#if defined(_WIN32)
typedef HANDLE fd_type;
#else
typedef int fd_type;
#endif
fd_type _fd;
};
}
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