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  3. FMallocBinned

FMallocBinned

Malloc binned allocator specific stats. Optimized virtual memory allocator.

Unreal Engine C++ API Reference > Runtime > Core > HAL

Inheritance Hierarchy

References

   
Module Core
Header /Engine/Source/Runtime/Core/Public/HAL/MallocBinned.h
Include #include "HAL/MallocBinned.h"

Syntax

class FMallocBinned : public FMalloc

Remarks

Malloc binned allocator specific stats. Optimized virtual memory allocator.

Constructors

  Type Name Description
Public function  

FMallocBinned ( uint32 InPageSize,
uint64 AddressLimit
)

 InPageSize - First parameter is page size, all allocs from BinnedAllocFromOS() MUST be aligned to this size AddressLimit - Second parameter is estimate of the range of addresses expected to be returns by BinnedAllocFromOS().

Destructors

  Type Name Description
Public function Virtual    

Overridden from FMalloc

  Type Name Description
Public function Virtual void Dumps allocator stats to an output device. Subclasses should override to add additional info
Public function Virtual void

Free ( void* Ptr
)

 Free
Public function Virtual bool

GetAllocationSize ( void* Original,
SIZE_T& SizeOut
)

 If possible determine the size of the memory allocated at the given address
Public function Virtual void Writes allocator stats from the last update into the specified destination.
Public function Virtual const TCHAR * Gets descriptive name for logging purposes.
Public function Virtual void Initializes stats metadata.
Public function Virtual Const bool Returns if the allocator is guaranteed to be thread-safe and therefore doesn't need a unnecessary thread-safety wrapper around it.
Public function Virtual void *

Malloc ( SIZE_T Size,
uint32 Alignment
)

 Malloc
Public function Virtual SIZE_T

QuantizeSize ( SIZE_T Count,
uint32 Alignment
)

 For some allocators this will return the actual size that should be requested to eliminate internal fragmentation.
Public function Virtual void *

Realloc ( void* Ptr,
SIZE_T NewSize,
uint32 Alignment
)

 Realloc
Public function Virtual void Called once per frame, gathers and sets all memory allocator statistics into the corresponding stats.
Public function Virtual bool Validates the allocator's heap

Classes

  Type Name Description
Public struct FFreeMem Information about a piece of free memory. 16 bytes  
Public struct FPoolInfo    
Public struct PoolHashBucket Hash table struct for retrieving allocation book keeping information  
Public struct Private    

Constants

Name Description
EXTENDED_PAGE_POOL_ALLOCATION_COUNT Maximum allocation for the pooled allocator
MAX_POOLED_ALLOCATION_SIZE  
POOL_COUNT Counts.

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