FMallocFrameProfiler Class Reference

#include <MallocFrameProfiler.h>

Inheritance diagram for FMallocFrameProfiler:

Classes
struct	FCallStackStats

Public Member Functions
CORE_API	FMallocFrameProfiler (FMalloc *InMalloc)
virtual CORE_API void	Init () override
virtual CORE_API void	UpdateStats () override
Public Member Functions inherited from FMallocCallstackHandler
CORE_API	FMallocCallstackHandler (FMalloc *InMalloc)
virtual CORE_API void *	Malloc (SIZE_T Count, uint32 Alignment=DEFAULT_ALIGNMENT) override
virtual CORE_API void *	Realloc (void *Original, SIZE_T Count, uint32 Alignment=DEFAULT_ALIGNMENT) override
virtual CORE_API void	Free (void *Original) override
virtual SIZE_T	QuantizeSize (SIZE_T Count, uint32 Alignment) override
virtual bool	GetAllocationSize (void *Original, SIZE_T &SizeOut) override
virtual void	Trim (bool bTrimThreadCaches) override
virtual void	SetupTLSCachesOnCurrentThread () override
virtual void	MarkTLSCachesAsUsedOnCurrentThread () override
virtual void	MarkTLSCachesAsUnusedOnCurrentThread ()
virtual void	ClearAndDisableTLSCachesOnCurrentThread () override
virtual void	InitializeStatsMetadata () override
virtual void	GetAllocatorStats (FGenericMemoryStats &out_Stats) override
virtual void	DumpAllocatorStats (class FOutputDevice &Ar) override
virtual bool	IsInternallyThreadSafe () const override
virtual bool	ValidateHeap () override
virtual const TCHAR *	GetDescriptiveName () override
virtual void	OnMallocInitialized () override
virtual void	OnPreFork () override
virtual void	OnPostFork () override
void	DumpStackTraceToLog (int32 StackIndex)
Public Member Functions inherited from FMalloc
virtual CORE_API void *	TryMalloc (SIZE_T Count, uint32 Alignment=DEFAULT_ALIGNMENT)
virtual CORE_API void *	TryRealloc (void *Original, SIZE_T Count, uint32 Alignment=DEFAULT_ALIGNMENT)
virtual CORE_API void *	MallocZeroed (SIZE_T Count, uint32 Alignment=DEFAULT_ALIGNMENT)
virtual CORE_API void *	TryMallocZeroed (SIZE_T Count, uint32 Alignment=DEFAULT_ALIGNMENT)
virtual uint64	GetImmediatelyFreeableCachedMemorySize () const
virtual uint64	GetTotalFreeCachedMemorySize () const
Public Member Functions inherited from FUseSystemMallocForNew
CORE_API void *	operator new (size_t Size)
CORE_API void	operator delete (void *Ptr)
void *	operator new[] (size_t Size)
void	operator delete[] (void *Ptr)
Public Member Functions inherited from FExec
virtual CORE_API	~FExec ()
virtual CORE_API bool	Exec (UWorld *InWorld, const TCHAR *Cmd, FOutputDevice &Ar)

Static Public Member Functions
static CORE_API FMalloc *	OverrideIfEnabled (FMalloc *InUsedAlloc)

Protected Member Functions
virtual CORE_API bool	IsDisabled () override
virtual CORE_API void	TrackMalloc (void *Ptr, uint32 Size, int32 CallStackIndex)
virtual CORE_API void	TrackFree (void *Ptr, uint32 OldSize, int32 CallStackIndex)
virtual CORE_API void	TrackRealloc (void *OldPtr, void *NewPtr, uint32 NewSize, uint32 OldSize, int32 CallStackIndex)
Protected Member Functions inherited from FMallocCallstackHandler
void	IncDisabled ()
void	DecDisabled ()
virtual int32	GetCallStackIndex ()
Protected Member Functions inherited from FExec
virtual bool	Exec_Runtime (UWorld *InWorld, const TCHAR *Cmd, FOutputDevice &Ar)
virtual bool	Exec_Dev (UWorld *InWorld, const TCHAR *Cmd, FOutputDevice &Ar)
virtual bool	Exec_Editor (UWorld *InWorld, const TCHAR *Cmd, FOutputDevice &Ar)

Protected Attributes
bool	bEnabled
uint32	FrameCount
uint32	EntriesToOutput
TMap< void *, int32 >	TrackedCurrentAllocations
TArray< FCallStackStats >	CallStackStatsArray
Protected Attributes inherited from FMallocCallstackHandler
FMalloc *	UsedMalloc
bool	Initialized
FCriticalSection	CriticalSection
uint32	DisabledTLS
FRWLock	RWLock
TMap< FCallStackMapKey, int32 >	CallStackMapKeyToCallStackIndexMap
TArray< FCallStackInfo >	CallStackInfoArray

Additional Inherited Members
Static Public Attributes inherited from FMallocCallstackHandler
static constexpr SIZE_T	MaxCallStackDepth = 64
static constexpr SIZE_T	CallStackEntriesToSkipCount = 2
Static Public Attributes inherited from FMalloc
static CORE_API TAtomic< uint64 >	MaxSingleAlloc

Constructor & Destructor Documentation

FMallocFrameProfiler()

FMallocFrameProfiler::FMallocFrameProfiler

(

FMalloc *

InMalloc

)

Member Function Documentation

Init()

void FMallocFrameProfiler::Init ( )

overridevirtual

Reimplemented from FMallocCallstackHandler.

IsDisabled()

bool FMallocFrameProfiler::IsDisabled ( )

overrideprotectedvirtual

Reimplemented from FMallocCallstackHandler.

OverrideIfEnabled()

FMalloc * FMallocFrameProfiler::OverrideIfEnabled ( FMalloc *  InUsedAlloc )

static

TrackFree()

void FMallocFrameProfiler::TrackFree ( void *  Ptr, uint32  OldSize, int32  CallStackIndex  )

protectedvirtual

Implements FMallocCallstackHandler.

TrackMalloc()

void FMallocFrameProfiler::TrackMalloc ( void *  Ptr, uint32  Size, int32  CallStackIndex  )

protectedvirtual

Implements FMallocCallstackHandler.

TrackRealloc()

void FMallocFrameProfiler::TrackRealloc ( void *  OldPtr, void *  NewPtr, uint32  NewSize, uint32  OldSize, int32  CallStackIndex  )

protectedvirtual

Reimplemented from FMallocCallstackHandler.

UpdateStats()

void FMallocFrameProfiler::UpdateStats ( )

overridevirtual

Called once per frame, gathers and sets all memory allocator statistics into the corresponding stats. MUST BE THREAD SAFE.

Reimplemented from FMallocCallstackHandler.

Member Data Documentation

bEnabled

bool FMallocFrameProfiler::bEnabled

protected

CallStackStatsArray

TArray<FCallStackStats> FMallocFrameProfiler::CallStackStatsArray

protected

EntriesToOutput

uint32 FMallocFrameProfiler::EntriesToOutput

protected

FrameCount

uint32 FMallocFrameProfiler::FrameCount

protected

TrackedCurrentAllocations

TMap<void*, int32> FMallocFrameProfiler::TrackedCurrentAllocations

protected

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The documentation for this class was generated from the following files:

• Engine/Source/Runtime/Core/Public/HAL/MallocFrameProfiler.h
• Engine/Source/Runtime/Core/Private/HAL/MallocFrameProfiler.cpp