#include <MallocDoubleFreeFinder.h>

Inheritance diagram for FMallocDoubleFreeFinder:

Classes
struct	TrackedAllocationData

Public Member Functions
CORE_API	FMallocDoubleFreeFinder (FMalloc *InMalloc)

CORE_API void	TrackSpecial (void *Ptr)

virtual CORE_API void	Init ()

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	UpdateStats () 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 void	TrackMalloc (void *Ptr, uint32 Size, int32 CallStackIndex)

virtual CORE_API void	TrackFree (void *Ptr, uint32 OldSize, int32 CallStackIndex)

Protected Member Functions inherited from FMallocCallstackHandler
void	IncDisabled ()

void	DecDisabled ()

virtual bool	IsDisabled ()

virtual CORE_API void	TrackRealloc (void OldPtr, void NewPtr, uint32 NewSize, uint32 OldSize, int32 CallStackIndex)

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
TMap< const void *const, TrackedAllocationData >	TrackedCurrentAllocations

TMap< const void *const, TrackedAllocationData >	TrackedFreeAllocations

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

◆ FMallocDoubleFreeFinder()

FMallocDoubleFreeFinder::FMallocDoubleFreeFinder ( FMalloc * InMalloc )

Member Function Documentation

◆ Init()

void FMallocDoubleFreeFinder::Init ( )

virtual

Reimplemented from FMallocCallstackHandler.

◆ OverrideIfEnabled()

FMalloc * FMallocDoubleFreeFinder::OverrideIfEnabled ( FMalloc * InUsedAlloc )

static

◆ TrackFree()

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

protectedvirtual

Implements FMallocCallstackHandler.

◆ TrackMalloc()

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

protectedvirtual

Implements FMallocCallstackHandler.

◆ TrackSpecial()

void FMallocDoubleFreeFinder::TrackSpecial ( void * Ptr )

If you get an allocation/memory error outside of the allocator you can call this directly It will dump a callstack of the last allocator free most likely to have caused the problem to the log, if you have symbols loaded Might be useful to pass an access violation ptr to this!

Member Data Documentation

◆ TrackedCurrentAllocations

TMap<const void* const, TrackedAllocationData> FMallocDoubleFreeFinder::TrackedCurrentAllocations

protected

◆ TrackedFreeAllocations

TMap<const void* const, TrackedAllocationData> FMallocDoubleFreeFinder::TrackedFreeAllocations

protected

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

Engine/Source/Runtime/Core/Public/HAL/MallocDoubleFreeFinder.h
Engine/Source/Runtime/Core/Private/HAL/MallocDoubleFreeFinder.cpp

Classes

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members