Burger::MemoryManagerGlobalHandle Class Reference

Global Handle Memory Manager helper class. More...

Inheritance diagram for Burger::MemoryManagerGlobalHandle:

Collaboration diagram for Burger::MemoryManagerGlobalHandle:

Public Member Functions
	MemoryManagerGlobalHandle (uintptr_t uDefaultMemorySize=kSystemMemoryChuckSize, uint_t uDefaultHandleCount=kDefaultHandleCount, uintptr_t uMinReserveSize=kSystemMemoryReservedSize) noexcept
	Attaches a Burger::MemoryManagerHandle class to the global memory manager.
	~MemoryManagerGlobalHandle ()
	Releases a Burger::MemoryManagerGlobalHandle class from the global memory manager.
Public Member Functions inherited from Burger::MemoryManagerHandle
	MemoryManagerHandle (uintptr_t uDefaultMemorySize=kSystemMemoryChuckSize, uint_t uDefaultHandleCount=kDefaultHandleCount, uintptr_t uMinReserveSize=kSystemMemoryReservedSize) noexcept
	Initialize the Handle based Memory Manager.
	~MemoryManagerHandle ()
	The destructor for the Handle based Memory Manager.
uintptr_t	GetTotalAllocatedMemory (void) const noexcept
	Returns the total allocated memory used by pointers and handles in bytes.
void *	alloc (uintptr_t uSize) noexcept
	Allocate fixed memory.
void	free (const void *pInput) noexcept
	Release fixed memory.
void *	realloc (const void *pInput, uintptr_t uSize) noexcept
	Resize a preexisting allocated block of memory.
void	shutdown (void) noexcept
	Shutdown the handle based Memory Manager.
void **	alloc_handle (uintptr_t uSize, uint_t uFlags=0) noexcept
	Allocates a block of memory.
void	free_handle (void **ppInput) noexcept
	Dispose of a memory handle into the free handle pool.
void **	ReallocHandle (void **ppInput, uintptr_t uSize) noexcept
	Resize a handle.
void **	RefreshHandle (void **ppInput) noexcept
	If the handle was purged, reallocate memory to it.
void **	FindHandle (const void *pInput) noexcept
	Search the handle tree for a pointer.
uintptr_t	GetTotalFreeMemory (void) noexcept
	Returns the total free space with purging.
void	clear_purge_flag (void **ppInput) noexcept
void	set_purge_flag (void **ppInput) noexcept
	Set the purge flag to a given handle.
void	SetLockedState (void **ppInput, uint_t uFlag) noexcept
	Set the current purge and lock flags of the handle.
void	Purge (void **ppInput) noexcept
	Move a handle into the purged list.
uint_t	PurgeHandles (uintptr_t uSize) noexcept
	Purges handles until the amount of memory requested is freed.
void	CompactHandles (void) noexcept
	Compact all of the movable blocks together.
void	dump_handles (void) noexcept
	Display all the memory.
Public Member Functions inherited from Burger::MemoryManager
void *	alloc (uintptr_t uSize) noexcept
	Allocate memory.
void	free (const void *pInput) noexcept
	Release memory.
void *	realloc (const void *pInput, uintptr_t uSize) noexcept
	Reallocate memory.
void	shutdown (void) noexcept
	Shut down the memory manager.
void *	alloc_clear (uintptr_t uSize) noexcept
	Allocate a block of pre-zeroed memory.

Private Member Functions
	MemoryManagerGlobalHandle (const MemoryManagerGlobalHandle &)=delete
MemoryManagerGlobalHandle &	operator= (const MemoryManagerGlobalHandle &)=delete
	MemoryManagerGlobalHandle (MemoryManagerGlobalHandle &&)=delete
MemoryManagerGlobalHandle &	operator= (MemoryManagerGlobalHandle &&)=delete

Private Attributes
MemoryManager *	m_pPrevious
	Pointer to the previous memory manager.

Additional Inherited Members
Public Types inherited from Burger::MemoryManagerHandle
enum	eMemoryStage { kStageCompact , kStagePurge , kStageHailMary , kStageGiveup }
typedef void(*	MemPurgeProc) (void *pThis, eMemoryStage uStage)
	Function prototype for user supplied garbage collection subroutine.
Public Types inherited from Burger::MemoryManager
typedef void *(*	ProcAlloc) (MemoryManager *pThis, uintptr_t uSize)
	Function prototype for allocating memory.
typedef void(*	ProcFree) (MemoryManager *pThis, const void *pInput)
	Function prototype for releasing memory.
typedef void *(*	ProcRealloc) (MemoryManager *pThis, const void *pInput, uintptr_t uSize)
	Function prototype for reallocating memory.
typedef void(*	ProcShutdown) (MemoryManager *pThis)
	Function prototype for destructor.
Static Public Member Functions inherited from Burger::MemoryManagerHandle
static uintptr_t	GetSize (void **ppInput) noexcept
	Returns the size of a memory handle.
static uintptr_t	GetSize (const void *pInput) noexcept
	Returns the size of a memory pointer.
static void *	lock (void **ppInput) noexcept
	Set the lock flag to a given handle and return the data pointer.
static void	unlock (void **ppInput) noexcept
	Clear the lock flag to a given handle.
static void	set_ID (void **ppInput, uint_t uID) noexcept
	Set a user supplied ID value for a handle.
static uint_t	GetLockedState (void **ppInput) noexcept
	Get the current purge and lock flags of the handle.
Static Public Member Functions inherited from Burger::MemoryManager
static void	shutdown (MemoryManager *pThis) noexcept
	Default memory manager destructor.
Public Attributes inherited from Burger::MemoryManager
ProcAlloc	m_pAlloc
	Pointer to allocation function.
ProcFree	m_pFree
	Pointer to memory release function.
ProcRealloc	m_pRealloc
	Pointer to the memory reallocation function.
ProcShutdown	m_pShutdown
	Pointer to the shutdown function.
Static Public Attributes inherited from Burger::MemoryManagerHandle
static const uint32_t	kFlagLocked = 0x80
	Set if the memory handle is temporarily locked.
static const uint32_t	kFlagFixed = 0x40
	Set if the memory cannot be moved (High memory)
static const uint32_t	kFlagMalloc = 0x20
	Set if the memory was allocated with malloc()
static const uint32_t	kFlagPurgable = 0x01
	Set if the handle is purgable.
static const uintptr_t	kAlignment = 16
	Memory alignment, power of 2, larger or equal to sizeof(void*)
static const uint32_t	kDefaultHandleCount = 512
	Default starting number of memory handles.
static const uintptr_t	kSystemMemoryChuckSize = 0x1000000
	Default memory chunk allocation size from system.
static const uintptr_t	kSystemMemoryReservedSize = 0x40000
	Default reserved system memory size.
static const uint32_t	kMemoryIDUnused = UINT32_MAX - 2
	Unused handle memory ID.
static const uint32_t	kMemoryIDFree = UINT32_MAX - 1
	Free handle memory ID.
static const uint32_t	kMemoryIDReserved = UINT32_MAX
	Reserved handle memory ID.

Detailed Description

Global Handle Memory Manager helper class.

---

This class is a helper that attaches a Burger::MemoryManagerHandle class to the global memory manager. When this instance shuts down, it will remove itself from the global memory manager.

See also

Burger::GlobalMemoryManager and Burger::MemoryManagerHandle

Constructor & Destructor Documentation

MemoryManagerGlobalHandle() [1/3]

Burger::MemoryManagerGlobalHandle::MemoryManagerGlobalHandle ( const MemoryManagerGlobalHandle & )

privatedelete

MemoryManagerGlobalHandle() [2/3]

Burger::MemoryManagerGlobalHandle::MemoryManagerGlobalHandle ( MemoryManagerGlobalHandle && )

privatedelete

MemoryManagerGlobalHandle() [3/3]

Burger::MemoryManagerGlobalHandle::MemoryManagerGlobalHandle ( uintptr_t uDefaultMemorySize = kSystemMemoryChuckSize, uint_t uDefaultHandleCount = kDefaultHandleCount, uintptr_t uMinReserveSize = kSystemMemoryReservedSize )

noexcept

Attaches a Burger::MemoryManagerHandle class to the global memory manager.

---

When this class is created, it will automatically attach itself to the global memory manager.

~MemoryManagerGlobalHandle()

Burger::MemoryManagerGlobalHandle::~MemoryManagerGlobalHandle

(

)

Releases a Burger::MemoryManagerGlobalHandle class from the global memory manager.

---

When this class is released, it will automatically remove itself to the global memory manager.

Member Function Documentation

operator=() [1/2]

MemoryManagerGlobalHandle & Burger::MemoryManagerGlobalHandle::operator= ( const MemoryManagerGlobalHandle & )

privatedelete

operator=() [2/2]

MemoryManagerGlobalHandle & Burger::MemoryManagerGlobalHandle::operator= ( MemoryManagerGlobalHandle && )

privatedelete

Member Data Documentation

m_pPrevious

MemoryManager* Burger::MemoryManagerGlobalHandle::m_pPrevious

private

Pointer to the previous memory manager.