haiku/headers/private/servers/app/TokenHandler.h

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//------------------------------------------------------------------------------
// Copyright (c) 2001-2002, Haiku
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
// File Name: TokenHandler.h
// Author: DarkWyrm <bpmagic@columbus.rr.com>
// Description: Class to provide tokens with excluded values possible.
//
//------------------------------------------------------------------------------
#ifndef TOKENHANDLER_H_
#define TOKENHANDLER_H_
#include <OS.h>
#include <List.h>
#include <Locker.h>
// Local Defines ---------------------------------------------------------------
#define B_PREFERRED_TOKEN -2 /* A little bird told me about this one */
#define B_NULL_TOKEN -1
#define B_ANY_TOKEN 0
#define B_HANDLER_TOKEN 1
/*!
\class TokenHandler TokenHandler.h
\brief Class to provide tokens with excluded values possible.
*/
class TokenHandler
{
public:
TokenHandler(void);
~TokenHandler(void);
int32 GetToken(void);
void ExcludeValue(int32 value);
void Reset(void);
void ResetExcludes(void);
bool IsExclude(int32 value);
private:
int32 _index;
BLocker _lock;
BList *_excludes;
};
#endif