60 lines
2.3 KiB
C
60 lines
2.3 KiB
C
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// Retainable.h -- Retainable class declaration
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// (c) Copyright Schlumberger Technology Corp., unpublished work, created
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// 1999. This computer program includes Confidential, Proprietary
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// Information and is a Trade Secret of Schlumberger Technology Corp. All
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// use, disclosure, and/or reproduction is prohibited unless authorized
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// in writing. All Rights Reserved.
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#if !defined(SLBCSP_RETAINABLE_H)
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#define SLBCSP_RETAINABLE_H
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// Abstract base class mixin (interface) used by derived classes to
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// define the interface to retain an object (block all other
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// applications from access until interactions with that resource are
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// complete). See the companion Retained template class to manage the
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// resources derived from Retainable.
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class Retainable
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{
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public:
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// Types
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// C'tors/D'tors
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Retainable();
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virtual
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~Retainable() = 0;
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// Operators
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// Operations
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// Give up control of the resource.
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virtual void
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Relinquish() = 0;
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// Obtain control of the resource, blocking all others from use.
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virtual void
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Retain() = 0;
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// Access
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// Predicates
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protected:
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// Types
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// C'tors/D'tors
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// Operators
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// Operations
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// Access
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// Predicates
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// Variables
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private:
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// Types
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// C'tors/D'tors
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// Operators
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// Operations
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// Access
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// Predicates
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// Variables
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};
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#endif // SLBCSP_RETAINABLE_H
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