xwords/xwords4/relay/permid.h

53 lines
2.2 KiB
C

/* -*-mode: C; fill-column: 78; c-basic-offset: 4; -*- */
/*
* Copyright 2005 by Eric House (xwords@eehouse.org). All rights reserved.
*
* 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; either version 2
* 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _PERMID_H
#define _PERMID_H
#include <string>
#include <pthread.h>
/* Able to get a unique ID for every game ever started. A simple file
* somewhere stores an ascii string representing a number. That's
* incremented, saved and returned each time. In a world with multiple relays
* (multiple machines) the ID could include a host identifier to guarantee
* uniqueness.
*/
class PermID {
public:
static void SetServerName( const char* name );
static void SetStartTime( time_t startTime );
static std::string GetNextUniqueID();
private:
static pthread_mutex_t s_guard; /* guard access to the whole
process */
static std::string s_serverName; /* All ID's generated start with
this, which is supposed to be
unique to this relay
instance. */
static int s_nextId; /* numeric part of ID */
static time_t s_startTime; /* allows multiple servers per
host to have uniquie names
and to ensure no duplications
after a crash. */
};
#endif