sdrangel/sdrbase/util/uid.h

51 wiersze
2.3 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
// written by Christian Daniel //
// Copyright (C) 2015-2019 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
// Copyright (C) 2015 John Greb <hexameron@spam.no> //
// //
// Object unique id calculator loosely inspired by MongoDB object id //
// //
// 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 as version 3 of the License, or //
// (at your option) any later version. //
// //
// 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 V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#ifndef SDRBASE_UTIL_UID_H_
#define SDRBASE_UTIL_UID_H_
#include <stdint.h>
#include "export.h"
class SDRBASE_API UidCalculator
{
public:
/**
* Get a new object unique Id. It is the addition of:
* - 6 digit microseconds in current second
* - 4 byte Unix epoch multiplied by 1000000
*/
static uint64_t getNewObjectId();
/**
* Get a new instance unique Id. It is made of from LSB to MSB:
* - 2 byte process id
* - 2 byte hashed host name
*/
static uint32_t getNewInstanceId();
private:
static uint64_t getCurrentMiroseconds();
};
#endif /* SDRBASE_UTIL_UID_H_ */