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authorDaniel Wilhelm <daniel@wili.li>2014-04-18 17:15:16 +0200
committerDaniel Wilhelm <daniel@wili.li>2014-04-18 17:15:16 +0200
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-////////////////////////////////////////////////////////////////////////////////
-// The Loki Library
-// Copyright (c) 2001 by Andrei Alexandrescu
-// This code accompanies the book:
-// Alexandrescu, Andrei. "Modern C++ Design: Generic Programming and Design
-// Patterns Applied". Copyright (c) 2001. Addison-Wesley.
-// Permission to use, copy, modify, distribute and sell this software for any
-// purpose is hereby granted without fee, provided that the above copyright
-// notice appear in all copies and that both that copyright notice and this
-// permission notice appear in supporting documentation.
-// The author or Addison-Wesley Longman make no representations about the
-// suitability of this software for any purpose. It is provided "as is"
-// without express or implied warranty.
-////////////////////////////////////////////////////////////////////////////////
-#ifndef LOKI_SMALLOBJ_INC_
-#define LOKI_SMALLOBJ_INC_
-
-// $Id: SmallObj.h 806 2007-02-03 00:01:52Z rich_sposato $
-
-
-#include "LokiExport.h"
-#include "Threads.h"
-#include "Singleton.h"
-#include <cstddef>
-#include <new> // needed for std::nothrow_t parameter.
-
-#ifndef LOKI_DEFAULT_CHUNK_SIZE
-#define LOKI_DEFAULT_CHUNK_SIZE 4096
-#endif
-
-#ifndef LOKI_MAX_SMALL_OBJECT_SIZE
-#define LOKI_MAX_SMALL_OBJECT_SIZE 256
-#endif
-
-#ifndef LOKI_DEFAULT_OBJECT_ALIGNMENT
-#define LOKI_DEFAULT_OBJECT_ALIGNMENT 4
-#endif
-
-#ifndef LOKI_DEFAULT_SMALLOBJ_LIFETIME
-#define LOKI_DEFAULT_SMALLOBJ_LIFETIME ::Loki::LongevityLifetime::DieAsSmallObjectParent
-#endif
-
-#if defined(LOKI_SMALL_OBJECT_USE_NEW_ARRAY) && defined(_MSC_VER)
-#pragma message("Don't define LOKI_SMALL_OBJECT_USE_NEW_ARRAY when using a Microsoft compiler to prevent memory leaks.")
-#pragma message("now calling '#undef LOKI_SMALL_OBJECT_USE_NEW_ARRAY'")
-#undef LOKI_SMALL_OBJECT_USE_NEW_ARRAY
-#endif
-
-/// \defgroup SmallObjectGroup Small objects
-///
-/// \defgroup SmallObjectGroupInternal Internals
-/// \ingroup SmallObjectGroup
-
-namespace Loki
-{
-namespace LongevityLifetime
-{
-/** @struct DieAsSmallObjectParent
- @ingroup SmallObjectGroup
- Lifetime policy to manage lifetime dependencies of
- SmallObject base and child classes.
- The Base class should have this lifetime
-*/
-template <class T>
-struct DieAsSmallObjectParent : DieLast<T> {};
-
-/** @struct DieAsSmallObjectChild
- @ingroup SmallObjectGroup
- Lifetime policy to manage lifetime dependencies of
- SmallObject base and child classes.
- The Child class should have this lifetime
-*/
-template <class T>
-struct DieAsSmallObjectChild : DieDirectlyBeforeLast<T> {};
-
-}
-
-class FixedAllocator;
-
-/** @class SmallObjAllocator
- @ingroup SmallObjectGroupInternal
- Manages pool of fixed-size allocators.
- Designed to be a non-templated base class of AllocatorSingleton so that
- implementation details can be safely hidden in the source code file.
- */
-class LOKI_EXPORT SmallObjAllocator
-{
-protected:
- /** The only available constructor needs certain parameters in order to
- initialize all the FixedAllocator's. This throws only if
- @param pageSize # of bytes in a page of memory.
- @param maxObjectSize Max # of bytes which this may allocate.
- @param objectAlignSize # of bytes between alignment boundaries.
- */
- SmallObjAllocator( std::size_t pageSize, std::size_t maxObjectSize,
- std::size_t objectAlignSize );
-
- /** Destructor releases all blocks, all Chunks, and FixedAllocator's.
- Any outstanding blocks are unavailable, and should not be used after
- this destructor is called. The destructor is deliberately non-virtual
- because it is protected, not public.
- */
- ~SmallObjAllocator( void );
-
-public:
- /** Allocates a block of memory of requested size. Complexity is often
- constant-time, but might be O(C) where C is the number of Chunks in a
- FixedAllocator.
-
- @par Exception Safety Level
- Provides either strong-exception safety, or no-throw exception-safety
- level depending upon doThrow parameter. The reason it provides two
- levels of exception safety is because it is used by both the nothrow
- and throwing new operators. The underlying implementation will never
- throw of its own accord, but this can decide to throw if it does not
- allocate. The only exception it should emit is std::bad_alloc.
-
- @par Allocation Failure
- If it does not allocate, it will call TrimExcessMemory and attempt to
- allocate again, before it decides to throw or return NULL. Many
- allocators loop through several new_handler functions, and terminate
- if they can not allocate, but not this one. It only makes one attempt
- using its own implementation of the new_handler, and then returns NULL
- or throws so that the program can decide what to do at a higher level.
- (Side note: Even though the C++ Standard allows allocators and
- new_handlers to terminate if they fail, the Loki allocator does not do
- that since that policy is not polite to a host program.)
-
- @param size # of bytes needed for allocation.
- @param doThrow True if this should throw if unable to allocate, false
- if it should provide no-throw exception safety level.
- @return NULL if nothing allocated and doThrow is false. Else the
- pointer to an available block of memory.
- */
- void* Allocate( std::size_t size, bool doThrow );
-
- /** Deallocates a block of memory at a given place and of a specific
- size. Complexity is almost always constant-time, and is O(C) only if
- it has to search for which Chunk deallocates. This never throws.
- */
- void Deallocate( void* p, std::size_t size );
-
- /** Deallocates a block of memory at a given place but of unknown size
- size. Complexity is O(F + C) where F is the count of FixedAllocator's
- in the pool, and C is the number of Chunks in all FixedAllocator's. This
- does not throw exceptions. This overloaded version of Deallocate is
- called by the nothow delete operator - which is called when the nothrow
- new operator is used, but a constructor throws an exception.
- */
- void Deallocate( void* p );
-
- /// Returns max # of bytes which this can allocate.
- inline std::size_t GetMaxObjectSize() const
- { return maxSmallObjectSize_; }
-
- /// Returns # of bytes between allocation boundaries.
- inline std::size_t GetAlignment() const { return objectAlignSize_; }
-
- /** Releases empty Chunks from memory. Complexity is O(F + C) where F
- is the count of FixedAllocator's in the pool, and C is the number of
- Chunks in all FixedAllocator's. This will never throw. This is called
- by AllocatorSingleto::ClearExtraMemory, the new_handler function for
- Loki's allocator, and is called internally when an allocation fails.
- @return True if any memory released, or false if none released.
- */
- bool TrimExcessMemory( void );
-
- /** Returns true if anything in implementation is corrupt. Complexity
- is O(F + C + B) where F is the count of FixedAllocator's in the pool,
- C is the number of Chunks in all FixedAllocator's, and B is the number
- of blocks in all Chunks. If it determines any data is corrupted, this
- will return true in release version, but assert in debug version at
- the line where it detects the corrupted data. If it does not detect
- any corrupted data, it returns false.
- */
- bool IsCorrupt( void ) const;
-
-private:
- /// Default-constructor is not implemented.
- SmallObjAllocator( void );
- /// Copy-constructor is not implemented.
- SmallObjAllocator( const SmallObjAllocator& );
- /// Copy-assignment operator is not implemented.
- SmallObjAllocator& operator = ( const SmallObjAllocator& );
-
- /// Pointer to array of fixed-size allocators.
- Loki::FixedAllocator* pool_;
-
- /// Largest object size supported by allocators.
- const std::size_t maxSmallObjectSize_;
-
- /// Size of alignment boundaries.
- const std::size_t objectAlignSize_;
-};
-
-
-/** @class AllocatorSingleton
- @ingroup SmallObjectGroupInternal
- This template class is derived from
- SmallObjAllocator in order to pass template arguments into it, and still
- have a default constructor for the singleton. Each instance is a unique
- combination of all the template parameters, and hence is singleton only
- with respect to those parameters. The template parameters have default
- values and the class has typedefs identical to both SmallObject and
- SmallValueObject so that this class can be used directly instead of going
- through SmallObject or SmallValueObject. That design feature allows
- clients to use the new_handler without having the name of the new_handler
- function show up in classes derived from SmallObject or SmallValueObject.
- Thus, the only functions in the allocator which show up in SmallObject or
- SmallValueObject inheritance hierarchies are the new and delete
- operators.
-*/
-template
-<
-template <class, class> class ThreadingModel = LOKI_DEFAULT_THREADING_NO_OBJ_LEVEL,
- std::size_t chunkSize = LOKI_DEFAULT_CHUNK_SIZE,
- std::size_t maxSmallObjectSize = LOKI_MAX_SMALL_OBJECT_SIZE,
- std::size_t objectAlignSize = LOKI_DEFAULT_OBJECT_ALIGNMENT,
- template <class> class LifetimePolicy = LOKI_DEFAULT_SMALLOBJ_LIFETIME,
- class MutexPolicy = LOKI_DEFAULT_MUTEX
- >
-class AllocatorSingleton : public SmallObjAllocator
-{
-public:
-
- /// Defines type of allocator.
- typedef AllocatorSingleton < ThreadingModel, chunkSize,
- maxSmallObjectSize, objectAlignSize, LifetimePolicy > MyAllocator;
-
- /// Defines type for thread-safety locking mechanism.
- typedef ThreadingModel< MyAllocator, MutexPolicy > MyThreadingModel;
-
- /// Defines singleton made from allocator.
- typedef Loki::SingletonHolder < MyAllocator, Loki::CreateStatic,
- LifetimePolicy, ThreadingModel > MyAllocatorSingleton;
-
- /// Returns reference to the singleton.
- inline static AllocatorSingleton& Instance( void )
- {
- return MyAllocatorSingleton::Instance();
- }
-
- /// The default constructor is not meant to be called directly.
- inline AllocatorSingleton() :
- SmallObjAllocator( chunkSize, maxSmallObjectSize, objectAlignSize )
- {}
-
- /// The destructor is not meant to be called directly.
- inline ~AllocatorSingleton( void ) {}
-
- /** Clears any excess memory used by the allocator. Complexity is
- O(F + C) where F is the count of FixedAllocator's in the pool, and C
- is the number of Chunks in all FixedAllocator's. This never throws.
- @note This function can be used as a new_handler when Loki and other
- memory allocators can no longer allocate. Although the C++ Standard
- allows new_handler functions to terminate the program when they can
- not release any memory, this will not do so.
- */
- static void ClearExtraMemory( void );
-
- /** Returns true if anything in implementation is corrupt. Complexity
- is O(F + C + B) where F is the count of FixedAllocator's in the pool,
- C is the number of Chunks in all FixedAllocator's, and B is the number
- of blocks in all Chunks. If it determines any data is corrupted, this
- will return true in release version, but assert in debug version at
- the line where it detects the corrupted data. If it does not detect
- any corrupted data, it returns false.
- */
- static bool IsCorrupted( void );
-
-private:
- /// Copy-constructor is not implemented.
- AllocatorSingleton( const AllocatorSingleton& );
- /// Copy-assignment operator is not implemented.
- AllocatorSingleton& operator = ( const AllocatorSingleton& );
-};
-
-template
-<
-template <class, class> class T,
- std::size_t C,
- std::size_t M,
- std::size_t O,
- template <class> class L,
- class X
- >
-void AllocatorSingleton< T, C, M, O, L, X >::ClearExtraMemory( void )
-{
- typename MyThreadingModel::Lock lock;
- (void)lock; // get rid of warning
- Instance().TrimExcessMemory();
-}
-
-template
-<
-template <class, class> class T,
- std::size_t C,
- std::size_t M,
- std::size_t O,
- template <class> class L,
- class X
- >
-bool AllocatorSingleton< T, C, M, O, L, X >::IsCorrupted( void )
-{
- typename MyThreadingModel::Lock lock;
- (void)lock; // get rid of warning
- return Instance().IsCorrupt();
-}
-
-/** This standalone function provides the longevity level for Small-Object
- Allocators which use the Loki::SingletonWithLongevity policy. The
- SingletonWithLongevity class can find this function through argument-
- dependent lookup.
-
- @par Longevity Levels
- No Small-Object Allocator depends on any other Small-Object allocator, so
- this does not need to calculate dependency levels among allocators, and
- it returns just a constant. All allocators must live longer than the
- objects which use the allocators, it must return a longevity level higher
- than any such object.
- */
-template
-<
-template <class, class> class T,
- std::size_t C,
- std::size_t M,
- std::size_t O,
- template <class> class L,
- class X
- >
-inline unsigned int GetLongevity(
- AllocatorSingleton< T, C, M, O, L, X > * )
-{
- // Returns highest possible value.
- return 0xFFFFFFFF;
-}
-
-
-/** @class SmallObjectBase
- @ingroup SmallObjectGroup
- Base class for small object allocation classes.
- The shared implementation of the new and delete operators are here instead
- of being duplicated in both SmallObject or SmallValueObject, later just
- called Small-Objects. This class is not meant to be used directly by clients,
- or derived from by clients. Class has no data members so compilers can
- use Empty-Base-Optimization.
-
- @par ThreadingModel
- This class doesn't support ObjectLevelLockable policy for ThreadingModel.
- The allocator is a singleton, so a per-instance mutex is not necessary.
- Nor is using ObjectLevelLockable recommended with SingletonHolder since
- the SingletonHolder::MakeInstance function requires a mutex that exists
- prior to when the object is created - which is not possible if the mutex
- is inside the object, such as required for ObjectLevelLockable. If you
- attempt to use ObjectLevelLockable, the compiler will emit errors because
- it can't use the default constructor in ObjectLevelLockable. If you need
- a thread-safe allocator, use the ClassLevelLockable policy.
-
- @par Lifetime Policy
-
- The SmallObjectBase template needs a lifetime policy because it owns
- a singleton of SmallObjAllocator which does all the low level functions.
- When using a Small-Object in combination with the SingletonHolder template
- you have to choose two lifetimes, that of the Small-Object and that of
- the singleton. The rule is: The Small-Object lifetime must be greater than
- the lifetime of the singleton hosting the Small-Object. Violating this rule
- results in a crash on exit, because the hosting singleton tries to delete
- the Small-Object which is then already destroyed.
-
- The lifetime policies recommended for use with Small-Objects hosted
- by a SingletonHolder template are
- - LongevityLifetime::DieAsSmallObjectParent / LongevityLifetime::DieAsSmallObjectChild
- - SingletonWithLongevity
- - FollowIntoDeath (not supported by MSVC 7.1)
- - NoDestroy
-
- The default lifetime of Small-Objects is
- LongevityLifetime::DieAsSmallObjectParent to
- insure that memory is not released before a object with the lifetime
- LongevityLifetime::DieAsSmallObjectChild using that
- memory is destroyed. The LongevityLifetime::DieAsSmallObjectParent
- lifetime has the highest possible value of a SetLongevity lifetime, so
- you can use it in combination with your own lifetime not having also
- the highest possible value.
-
- The DefaultLifetime and PhoenixSingleton policies are *not* recommended
- since they can cause the allocator to be destroyed and release memory
- for singletons hosting a object which inherit from either SmallObject
- or SmallValueObject.
-
- @par Lifetime usage
-
- - LongevityLifetime: The Small-Object has
- LongevityLifetime::DieAsSmallObjectParent policy and the Singleton
- hosting the Small-Object has LongevityLifetime::DieAsSmallObjectChild.
- The child lifetime has a hard coded SetLongevity lifetime which is
- shorter than the lifetime of the parent, thus the child dies
- before the parent.
-
- - Both Small-Object and Singleton use SingletonWithLongevity policy.
- The longevity level for the singleton must be lower than that for the
- Small-Object. This is why the AllocatorSingleton's GetLongevity function
- returns the highest value.
-
- - FollowIntoDeath lifetime: The Small-Object has
- FollowIntoDeath::With<LIFETIME>::AsMasterLiftime
- policy and the Singleton has
- FollowIntoDeath::AfterMaster<MASTERSINGLETON>::IsDestroyed policy,
- where you could choose the LIFETIME.
-
- - Both Small-Object and Singleton use NoDestroy policy.
- Since neither is ever destroyed, the destruction order does not matter.
- Note: you will get memory leaks!
-
- - The Small-Object has NoDestroy policy but the Singleton has
- SingletonWithLongevity policy. Note: you will get memory leaks!
-
-
- You should *not* use NoDestroy for the singleton, and then use
- SingletonWithLongevity for the Small-Object.
-
- @par Examples:
-
- - test/SmallObj/SmallSingleton.cpp
- - test/Singleton/Dependencies.cpp
- */
-template
-<
-template <class, class> class ThreadingModel,
- std::size_t chunkSize,
- std::size_t maxSmallObjectSize,
- std::size_t objectAlignSize,
- template <class> class LifetimePolicy,
- class MutexPolicy
- >
-class SmallObjectBase
-{
-
-#if (LOKI_MAX_SMALL_OBJECT_SIZE != 0) && (LOKI_DEFAULT_CHUNK_SIZE != 0) && (LOKI_DEFAULT_OBJECT_ALIGNMENT != 0)
-
-public:
- /// Defines type of allocator singleton, must be public
- /// to handle singleton lifetime dependencies.
- typedef AllocatorSingleton < ThreadingModel, chunkSize,
- maxSmallObjectSize, objectAlignSize, LifetimePolicy > ObjAllocatorSingleton;
-
-private:
-
- /// Defines type for thread-safety locking mechanism.
- typedef ThreadingModel< ObjAllocatorSingleton, MutexPolicy > MyThreadingModel;
-
- /// Use singleton defined in AllocatorSingleton.
- typedef typename ObjAllocatorSingleton::MyAllocatorSingleton MyAllocatorSingleton;
-
-public:
-
- /// Throwing single-object new throws bad_alloc when allocation fails.
-#ifdef _MSC_VER
- /// @note MSVC complains about non-empty exception specification lists.
- static void* operator new ( std::size_t size )
-#else
- static void* operator new ( std::size_t size ) throw ( std::bad_alloc )
-#endif
- {
- typename MyThreadingModel::Lock lock;
- (void)lock; // get rid of warning
- return MyAllocatorSingleton::Instance().Allocate( size, true );
- }
-
- /// Non-throwing single-object new returns NULL if allocation fails.
- static void* operator new ( std::size_t size, const std::nothrow_t& ) throw ()
- {
- typename MyThreadingModel::Lock lock;
- (void)lock; // get rid of warning
- return MyAllocatorSingleton::Instance().Allocate( size, false );
- }
-
- /// Placement single-object new merely calls global placement new.
- inline static void* operator new ( std::size_t size, void* place )
- {
- return ::operator new( size, place );
- }
-
- /// Single-object delete.
- static void operator delete ( void* p, std::size_t size ) throw ()
- {
- typename MyThreadingModel::Lock lock;
- (void)lock; // get rid of warning
- MyAllocatorSingleton::Instance().Deallocate( p, size );
- }
-
- /** Non-throwing single-object delete is only called when nothrow
- new operator is used, and the constructor throws an exception.
- */
- static void operator delete ( void* p, const std::nothrow_t& ) throw()
- {
- typename MyThreadingModel::Lock lock;
- (void)lock; // get rid of warning
- MyAllocatorSingleton::Instance().Deallocate( p );
- }
-
- /// Placement single-object delete merely calls global placement delete.
- inline static void operator delete ( void* p, void* place )
- {
- ::operator delete ( p, place );
- }
-
-#ifdef LOKI_SMALL_OBJECT_USE_NEW_ARRAY
-
- /// Throwing array-object new throws bad_alloc when allocation fails.
-#ifdef _MSC_VER
- /// @note MSVC complains about non-empty exception specification lists.
- static void* operator new [] ( std::size_t size )
-#else
- static void* operator new [] ( std::size_t size )
- throw ( std::bad_alloc )
-#endif
- {
- typename MyThreadingModel::Lock lock;
- (void)lock; // get rid of warning
- return MyAllocatorSingleton::Instance().Allocate( size, true );
- }
-
- /// Non-throwing array-object new returns NULL if allocation fails.
- static void* operator new [] ( std::size_t size,
- const std::nothrow_t& ) throw ()
- {
- typename MyThreadingModel::Lock lock;
- (void)lock; // get rid of warning
- return MyAllocatorSingleton::Instance().Allocate( size, false );
- }
-
- /// Placement array-object new merely calls global placement new.
- inline static void* operator new [] ( std::size_t size, void* place )
- {
- return ::operator new( size, place );
- }
-
- /// Array-object delete.
- static void operator delete [] ( void* p, std::size_t size ) throw ()
- {
- typename MyThreadingModel::Lock lock;
- (void)lock; // get rid of warning
- MyAllocatorSingleton::Instance().Deallocate( p, size );
- }
-
- /** Non-throwing array-object delete is only called when nothrow
- new operator is used, and the constructor throws an exception.
- */
- static void operator delete [] ( void* p,
- const std::nothrow_t& ) throw()
- {
- typename MyThreadingModel::Lock lock;
- (void)lock; // get rid of warning
- MyAllocatorSingleton::Instance().Deallocate( p );
- }
-
- /// Placement array-object delete merely calls global placement delete.
- inline static void operator delete [] ( void* p, void* place )
- {
- ::operator delete ( p, place );
- }
-#endif // #if use new array functions.
-
-#endif // #if default template parameters are not zero
-
-protected:
- inline SmallObjectBase( void ) {}
- inline SmallObjectBase( const SmallObjectBase& ) {}
- inline SmallObjectBase& operator = ( const SmallObjectBase& )
- { return *this; }
- inline ~SmallObjectBase() {}
-}; // end class SmallObjectBase
-
-
-/** @class SmallObject
- @ingroup SmallObjectGroup
- SmallObject Base class for polymorphic small objects, offers fast
- allocations & deallocations. Destructor is virtual and public. Default
- constructor is trivial. Copy-constructor and copy-assignment operator are
- not implemented since polymorphic classes almost always disable those
- operations. Class has no data members so compilers can use
- Empty-Base-Optimization.
- */
-template
-<
-template <class, class> class ThreadingModel = LOKI_DEFAULT_THREADING_NO_OBJ_LEVEL,
- std::size_t chunkSize = LOKI_DEFAULT_CHUNK_SIZE,
- std::size_t maxSmallObjectSize = LOKI_MAX_SMALL_OBJECT_SIZE,
- std::size_t objectAlignSize = LOKI_DEFAULT_OBJECT_ALIGNMENT,
- template <class> class LifetimePolicy = LOKI_DEFAULT_SMALLOBJ_LIFETIME,
- class MutexPolicy = LOKI_DEFAULT_MUTEX
- >
-class SmallObject : public SmallObjectBase < ThreadingModel, chunkSize,
- maxSmallObjectSize, objectAlignSize, LifetimePolicy, MutexPolicy >
-{
-
-public:
- virtual ~SmallObject() {}
-protected:
- inline SmallObject( void ) {}
-
-private:
- /// Copy-constructor is not implemented.
- SmallObject( const SmallObject& );
- /// Copy-assignment operator is not implemented.
- SmallObject& operator = ( const SmallObject& );
-}; // end class SmallObject
-
-
-/** @class SmallValueObject
- @ingroup SmallObjectGroup
- SmallValueObject Base class for small objects with value-type
- semantics - offers fast allocations & deallocations. Destructor is
- non-virtual, inline, and protected to prevent unintentional destruction
- through base class. Default constructor is trivial. Copy-constructor
- and copy-assignment operator are trivial since value-types almost always
- need those operations. Class has no data members so compilers can use
- Empty-Base-Optimization.
- */
-template
-<
-template <class, class> class ThreadingModel = LOKI_DEFAULT_THREADING_NO_OBJ_LEVEL,
- std::size_t chunkSize = LOKI_DEFAULT_CHUNK_SIZE,
- std::size_t maxSmallObjectSize = LOKI_MAX_SMALL_OBJECT_SIZE,
- std::size_t objectAlignSize = LOKI_DEFAULT_OBJECT_ALIGNMENT,
- template <class> class LifetimePolicy = LOKI_DEFAULT_SMALLOBJ_LIFETIME,
- class MutexPolicy = LOKI_DEFAULT_MUTEX
- >
-class SmallValueObject : public SmallObjectBase < ThreadingModel, chunkSize,
- maxSmallObjectSize, objectAlignSize, LifetimePolicy, MutexPolicy >
-{
-protected:
- inline SmallValueObject( void ) {}
- inline SmallValueObject( const SmallValueObject& ) {}
- inline SmallValueObject& operator = ( const SmallValueObject& )
- { return *this; }
- inline ~SmallValueObject() {}
-}; // end class SmallValueObject
-
-} // namespace Loki
-
-#endif // end file guardian
-
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