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92 lines
4.0 KiB
C++
Executable File
92 lines
4.0 KiB
C++
Executable File
// Created on: 2002-04-12
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// Created by: Alexander KARTOMIN (akm)
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// Copyright (c) 2002-2012 OPEN CASCADE SAS
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//
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// The content of this file is subject to the Open CASCADE Technology Public
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// License Version 6.5 (the "License"). You may not use the content of this file
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// except in compliance with the License. Please obtain a copy of the License
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// at http://www.opencascade.org and read it completely before using this file.
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//
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// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
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// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
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//
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// The Original Code and all software distributed under the License is
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// distributed on an "AS IS" basis, without warranty of any kind, and the
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// Initial Developer hereby disclaims all such warranties, including without
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// limitation, any warranties of merchantability, fitness for a particular
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// purpose or non-infringement. Please see the License for the specific terms
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// and conditions governing the rights and limitations under the License.
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// Purpose: Basic class for memory allocation wizards.
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// Defines the interface for devising different allocators
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// firstly to be used by collections of NCollection, though it
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// it is not deferred. It allocates/frees the memory through
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// Standard procedures, thus it is unnecessary (and sometimes
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// injurious) to have more than one such allocator. To avoid
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// creation of multiple objects the constructors were maid
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// inaccessible. To create the BaseAllocator use the method
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// CommonBaseAllocator.
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// Note that this object is managed by Handle.
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#ifndef NCollection_BaseAllocator_HeaderFile
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#define NCollection_BaseAllocator_HeaderFile
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#include <MMgt_TShared.hxx>
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#include <Standard_DefineHandle.hxx>
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#include <NCollection_TypeDef.hxx>
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class Handle(NCollection_BaseAllocator);
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/**
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* Purpose: Basic class for memory allocation wizards.
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* Defines the interface for devising different allocators
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* firstly to be used by collections of NCollection, though it
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* it is not deferred. It allocates/frees the memory through
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* Standard procedures, thus it is unnecessary (and sometimes
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* injurious) to have more than one such allocator. To avoid
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* creation of multiple objects the constructors were maid
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* inaccessible. To create the BaseAllocator use the method
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* CommonBaseAllocator.
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* Note that this object is managed by Handle.
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*/
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class NCollection_BaseAllocator : public MMgt_TShared
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{
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public:
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// ---------- PUBLIC METHODS ------------
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Standard_EXPORT virtual void* Allocate (const size_t size);
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Standard_EXPORT virtual void Free (void * anAddress);
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//! CommonBaseAllocator
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//! This method is designed to have the only one BaseAllocator (to avoid
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//! useless copying of collections). However one can use operator new to
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//! create more BaseAllocators, but it is injurious.
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Standard_EXPORT static const Handle(NCollection_BaseAllocator)&
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CommonBaseAllocator(void);
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//! Callback function to register alloc/free calls
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Standard_EXPORT static void StandardCallBack
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(const Standard_Boolean theIsAlloc,
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const Standard_Address theStorage,
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const Standard_Size theRoundSize,
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const Standard_Size theSize);
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//! Prints memory usage statistics cumulated by StandardCallBack
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Standard_EXPORT static void PrintMemUsageStatistics();
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protected:
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//! Constructor - prohibited
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NCollection_BaseAllocator(void) {};
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private:
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//! Copy constructor - prohibited
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NCollection_BaseAllocator(const NCollection_BaseAllocator&);
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public:
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// ---------- CasCade RunTime Type Information
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DEFINE_STANDARD_RTTI(NCollection_BaseAllocator)
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};
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DEFINE_STANDARD_HANDLE(NCollection_BaseAllocator,MMgt_TShared)
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#endif
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