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* Copyright (C) 2010 Google Inc.
* 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
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
* locks.h: locks are used to preserve atomicity of operations.
#ifndef LOCKS_H__
#define LOCKS_H__
/* this is the base key, since we have to pick something global */
#define IPC_LOCK_KEY (0x67736c00 & 0xfffffc00) /* 22 bits "gsl" */
/* The ordering of the following keys matters a lot. We don't want to reorder
* keys and have a new binary dependent on deployed/used because it will break
* atomicity of existing users and binaries. In other words, DO NOT REORDER. */
/* this is the "big lock". */
#define BIGLOCK (IPC_LOCK_KEY + 0)
#endif /* LOCKS_H__ */