Class Memory

Represents methods to work with memory pools and buffers.

Inheritance

object

Memory

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: DotNext.Buffers

Assembly: DotNext.dll

Syntax

public static class Memory

Methods

AllocateAtLeast<T>(MemoryAllocator<T>?, int)

Allocates memory of at least length size.

Declaration

public static MemoryOwner<T> AllocateAtLeast<T>(this MemoryAllocator<T>? allocator, int length)

Parameters

Type	Name	Description
MemoryAllocator<T>	allocator	The memory allocator.
int	length	The number of items in the rented memory.

Returns

Type	Description
MemoryOwner<T>	The allocated memory.

Type Parameters

Name	Description
T	The type of the items in the memory pool.

AllocateAtLeast<T>(int)

Rents a block of memory of at least length size from Shared pool.

Declaration

public static MemoryOwner<T> AllocateAtLeast<T>(int length)

Parameters

Type	Name	Description
int	length	The number of items in the rented memory.

Returns

Type	Description
MemoryOwner<T>	The allocated memory.

Type Parameters

Name	Description
T	The type of the items in the memory pool.

AllocateExactly<T>(MemoryAllocator<T>?, int)

Allocates memory of length size.

Declaration

public static MemoryOwner<T> AllocateExactly<T>(this MemoryAllocator<T>? allocator, int length)

Parameters

Type	Name	Description
MemoryAllocator<T>	allocator	The memory allocator.
int	length	The number of items in the rented memory.

Returns

Type	Description
MemoryOwner<T>	The allocated memory.

Type Parameters

Name	Description
T	The type of the items in the memory pool.

AllocateExactly<T>(int)

Rents a block of memory of the specified size from Shared pool.

Declaration

public static MemoryOwner<T> AllocateExactly<T>(int length)

Parameters

Type	Name	Description
int	length	The number of items in the rented memory.

Returns

Type	Description
MemoryOwner<T>	The allocated memory.

Type Parameters

Name	Description
T	The type of the items in the memory pool.

Concat<T>(ReadOnlyMemory<T>, ReadOnlyMemory<T>)

Converts two memory blocks to ReadOnlySequence<T> data type.

Declaration

public static ReadOnlySequence<T> Concat<T>(this ReadOnlyMemory<T> first, ReadOnlyMemory<T> second)

Parameters

Type	Name	Description
ReadOnlyMemory<T>	first	The first memory block.
ReadOnlyMemory<T>	second	The second memory block.

Returns

Type	Description
ReadOnlySequence<T>	The constructed ReadOnlySequence<T> instance containing memory blocks.

Type Parameters

Name	Description
T	The type of elements in the memory blocks.

CopyTo<T>(in ReadOnlySequence<T>, scoped Span<T>, out int)

Copies the contents from the source sequence into a destination span.

Declaration

public static void CopyTo<T>(this in ReadOnlySequence<T> source, scoped Span<T> destination, out int writtenCount)

Parameters

Type	Name	Description
ReadOnlySequence<T>	source	Source sequence.
Span<T>	destination	Destination memory.
int	writtenCount	The number of copied elements.

Type Parameters

Name	Description
T	The type of the elements in the sequence.

GetArrayAllocator<T>()

Returns array allocator.

Declaration

public static MemoryAllocator<T> GetArrayAllocator<T>()

Returns

Type	Description
MemoryAllocator<T>	The array allocator.

Type Parameters

Name	Description
T	The type of elements in the array.

GetPinnedArrayAllocator<T>()

Returns an allocator of pinned arrays.

Declaration

public static MemoryAllocator<T> GetPinnedArrayAllocator<T>() where T : unmanaged

Returns

Type	Description
MemoryAllocator<T>	The array allocator.

Type Parameters

Name	Description
T	The type of elements in the array.

GetReference<T>(in MemoryOwner<T>)

Gets managed pointer to the first element in the rented memory block.

Declaration

public static ref T GetReference<T>(in MemoryOwner<T> owner)

Parameters

Type	Name	Description
MemoryOwner<T>	owner	The rented memory block.

Returns

Type	Description
T	A managed pointer to the first element; or NullRef<T>() if memory block is empty.

Type Parameters

Name	Description
T	The type of the elements in the memory block.

ReleaseAll<T>(ref MemoryOwner<T>)

Releases all resources encapsulated by the container.

Declaration

public static void ReleaseAll<T>(this ref MemoryOwner<T> owner) where T : notnull, IDisposable

Parameters

Type	Name	Description
MemoryOwner<T>	owner	The rented memory.

Type Parameters

Name	Description
T	The type of items in the rented memory.

Remarks

This method calls Dispose() for each object in the rented block.

Resize<T>(ref MemoryOwner<T>, int, MemoryAllocator<T>?)

Resizes the buffer.

Declaration

public static void Resize<T>(this ref MemoryOwner<T> owner, int newLength, MemoryAllocator<T>? allocator = null)

Parameters

Type	Name	Description
MemoryOwner<T>	owner	The buffer owner to resize.
int	newLength	A new length of the buffer.
MemoryAllocator<T>	allocator	The allocator to be called if the requested length is larger than the requested length.

Type Parameters

Name	Description
T	The type of the elements in the buffer.

Exceptions

Type	Condition
ArgumentOutOfRangeException	newLength is less than zero.

ToAllocator<T>(ArrayPool<T>)

Converts array pool to the memory allocator.

Declaration

public static MemoryAllocator<T> ToAllocator<T>(this ArrayPool<T> pool)

Parameters

Type	Name	Description
ArrayPool<T>	pool	The array pool.

Returns

Type	Description
MemoryAllocator<T>	The array allocator.

Type Parameters

Name	Description
T	The type of the items in the memory pool.

ToAllocator<T>(MemoryPool<T>)

Converts memory pool to the memory allocator.

Declaration

public static MemoryAllocator<T> ToAllocator<T>(this MemoryPool<T> pool)

Parameters

Type	Name	Description
MemoryPool<T>	pool	The memory pool.

Returns

Type	Description
MemoryAllocator<T>	The memory allocator.

Type Parameters

Name	Description
T	The type of the items in the memory pool.

ToAllocator<T>(Func<int, IMemoryOwner<T>>)

Converts memory provider to the memory allocator.

Declaration

public static MemoryAllocator<T> ToAllocator<T>(this Func<int, IMemoryOwner<T>> provider)

Parameters

Type	Name	Description
Func<int, IMemoryOwner<T>>	provider	The memory provider.

Returns

Type	Description
MemoryAllocator<T>	The memory allocator.

Type Parameters

Name	Description
T	The type of the items in the memory pool.

ToReadOnlySequence(IEnumerable<string?>)

Constructs a sequence of characters from a collection of strings.

Declaration

public static ReadOnlySequence<char> ToReadOnlySequence(this IEnumerable<string?> strings)

Parameters

Type	Name	Description
IEnumerable<string>	strings	A collection of strings.

Returns

Type	Description
ReadOnlySequence<char>	A sequence of characters representing concatenated strings.

ToReadOnlySequence(StringBuilder)

Gets a sequence of characters written to the builder.

Declaration

public static ReadOnlySequence<char> ToReadOnlySequence(this StringBuilder builder)

Parameters

Type	Name	Description
StringBuilder	builder	A string builder.

Returns

Type	Description
ReadOnlySequence<char>	A sequence of characters written to the builder.

ToReadOnlySequence<T>(IEnumerable<ReadOnlyMemory<T>>)

Converts the sequence of memory blocks to ReadOnlySequence<T> data type.

Declaration

public static ReadOnlySequence<T> ToReadOnlySequence<T>(this IEnumerable<ReadOnlyMemory<T>> chunks)

Parameters

Type	Name	Description
IEnumerable<ReadOnlyMemory<T>>	chunks	The sequence of memory blocks.

Returns

Type	Description
ReadOnlySequence<T>	The constructed ReadOnlySequence<T> instance containing memory blocks.

Type Parameters

Name	Description
T	The type of elements in the memory blocks.

TrimLength<T>(Memory<T>, int)

Trims the memory block to specified length if it exceeds it. If length is less that maxLength then the original block returned.

Declaration

public static Memory<T> TrimLength<T>(this Memory<T> memory, int maxLength)

Parameters

Type	Name	Description
Memory<T>	memory	A contiguous region of arbitrary memory.
int	maxLength	Maximum length.

Returns

Type	Description
Memory<T>	Trimmed memory block.

Type Parameters

Name	Description
T	The type of items in the span.

TrimLength<T>(ReadOnlyMemory<T>, int)

Trims the memory block to specified length if it exceeds it. If length is less that maxLength then the original block returned.

Declaration

public static ReadOnlyMemory<T> TrimLength<T>(this ReadOnlyMemory<T> memory, int maxLength)

Parameters

Type	Name	Description
ReadOnlyMemory<T>	memory	A contiguous region of arbitrary memory.
int	maxLength	Maximum length.

Returns

Type	Description
ReadOnlyMemory<T>	Trimmed memory block.

Type Parameters

Name	Description
T	The type of items in the span.

TryGetBlock<T>(in ReadOnlySequence<T>, int, out ReadOnlyMemory<T>)

Tries to get a contiguous block of memory from the specified sequence of elements.

Declaration

public static bool TryGetBlock<T>(this in ReadOnlySequence<T> sequence, int count, out ReadOnlyMemory<T> span)

Parameters

Type	Name	Description
ReadOnlySequence<T>	sequence	The sequence of elements to read from.
int	count	The size of contiguous block.
ReadOnlyMemory<T>	span	The contiguous block of elements.

Returns

Type	Description
bool	true if contiguous block of elements is obtained successfully; otherwise, false.

Type Parameters

Name	Description
T	The type of the elements in the block.