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This is now a shared private app_server header

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3971 a95241bf-73f2-0310-859d-f6bbb57e9c96
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DarkWyrm 2003-07-14 14:43:11 +00:00
parent f1b45a54bb
commit 512df4993d
1 changed files with 0 additions and 55 deletions
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src/servers/app/server/SharedObject.h
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//------------------------------------------------------------------------------
// Copyright (c) 2001-2002, OpenBeOS
//
// 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: SharedObject.h
// Author: DarkWyrm <bpmagic@columbus.rr.com>
// Description: This class is used as a base class for other objects which
// must be shared. By using this, objects which depend on its
// existence can be somewhat sure that the shared object will
// not be deleted until nothing depends on it.
//
//------------------------------------------------------------------------------
#ifndef SHAREDOBJ_H_
#define SHAREDOBJ_H_
#include <SupportDefs.h>
/*!
\class SharedObject SharedObject.h
\brief Base class for shared objects
SharedObjects track dependencies upon a particular object. In this way, is is
possible to ensure that a shared resource is not deleted if something else
needs it. How the dependency tracking is done largely depends on the child class.
*/
class SharedObject
{
public:
SharedObject(void) { dependents=0; }
virtual ~SharedObject(void){}
virtual void AddDependent(void) { dependents++; }
virtual void RemoveDependent(void) { dependents--; }
virtual bool HasDependents(void) { return (dependents>0)?true:false; }
private:
uint32 dependents;
};
#endif