Struct VirtualMemoryUtility

Namespace: Unity.Collections.LowLevel.Unsafe

Syntax

public struct VirtualMemoryUtility

Properties

DefaultPageSizeInBytes

Gets the default virtual memory page size in bytes for this platform.

Declaration

public static uint DefaultPageSizeInBytes { get; }

Property Value

Type	Description
UInt32

Methods

BytesToPageCount(UInt32, UInt32)

Computes the number of pages required to cover a contiguous area of memory.

Declaration

public static uint BytesToPageCount(uint bytes, uint pageSizeInBytes)

Parameters

Type	Name	Description
UInt32	bytes	Bytes of the contiguous area of memory.
UInt32	pageSizeInBytes	Size of the virtual memory page in bytes.

Returns

Type	Description
UInt32	The page count required to cover the contiguous area of memory.

CommitMemory(VMRange, out BaselibErrorState)

Commits memory from reserved address space.

Declaration

public static void CommitMemory(VMRange rangeToCommit, out BaselibErrorState outErrorState)

Parameters

Type	Name	Description
VMRange	rangeToCommit	Reserved virtual address range from which to allocate memory.
BaselibErrorState	outErrorState	Wrapped copy of Baselib_ErrorState.

DecommitMemory(VMRange, out BaselibErrorState)

Decommits committed memory from reserved address space.

Declaration

public static void DecommitMemory(VMRange rangeToFree, out BaselibErrorState outErrorState)

Parameters

Type	Name	Description
VMRange	rangeToFree	Virtual address range from which to free allocated memory.
BaselibErrorState	outErrorState	Wrapped copy of Baselib_ErrorState.

FreeAddressSpace(VMRange, out BaselibErrorState)

Frees reserved address space.

Declaration

public static void FreeAddressSpace(VMRange reservedAddressRange, out BaselibErrorState outErrorState)

Parameters

Type	Name	Description
VMRange	reservedAddressRange	Virtual address range to release.
BaselibErrorState	outErrorState	Wrapped copy of Baselib_ErrorState.

ReportWrappedBaselibError(BaselibErrorState)

Logs baselib errors to the console.

Declaration

public static void ReportWrappedBaselibError(BaselibErrorState wrappedErrorState)

Parameters

Type	Name	Description
BaselibErrorState	wrappedErrorState	Wrapped copy of Baselib_ErrorState.

ReserveAddressSpace(UInt64, UInt64, out BaselibErrorState)

Reserves a contiguous range of address space.

Declaration

public static VMRange ReserveAddressSpace(ulong sizeOfAddressRangeInPages, ulong pageSizeInBytes, out BaselibErrorState outErrorState)

Parameters

Type	Name	Description
UInt64	sizeOfAddressRangeInPages	Size of a virtual address range to reserve, in pages.
UInt64	pageSizeInBytes	Size of a page of virtual memory, in bytes.
BaselibErrorState	outErrorState	Wrapped copy of Baselib_ErrorState.

Returns

Type	Description
VMRange	A VMRange. Upon failure, the returned VMRange will have a null pointer, 0 sized pages, and 0 page count.