Class MappedAccessor<T>

Abstract representation of a memory-mapped accessor: Provides random access to unmanaged blocks of memory from managed code.
Inheritance
System.Object
MappedAccessor<T>
MappedAccessorByte
MappedAccessorDouble
MappedAccessorInt16
MappedAccessorInt32
MappedAccessorInt64
MappedAccessorSingle
MappedAccessorUInt16
MappedAccessorUInt32
MappedAccessorUInt64
MappedAccessorVariable<T>
Implements
System.IDisposable
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
Namespace: Mars.Common.IO.Mapped
Assembly: Mars.IO.dll
Syntax
public abstract class MappedAccessor<T> : IDisposable
Type Parameters
Name Description
T

Constructors

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MappedAccessor(MemoryMap, Stream, Int32)

Creates a new mapped accessor.
Declaration
protected MappedAccessor(MemoryMap file, Stream stream, int singleElementSize)
Parameters
Type Name Description
MemoryMap file
System.IO.Stream stream
System.Int32 singleElementSize

Fields

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SingleElementSize

The size of a single element if constant.
Declaration
protected readonly int SingleElementSize
Field Value
Type Description
System.Int32
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Stream

Holds the stream.
Declaration
protected readonly Stream Stream
Field Value
Type Description
System.IO.Stream

Properties

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CanWrite

Determines whether the accessory is writable.
Declaration
public virtual bool CanWrite { get; }
Property Value
Type Description
System.Boolean
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Capacity

Gets the capacity of this memory mapped file in bytes.
Declaration
public long Capacity { get; }
Property Value
Type Description
System.Int64
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CapacityElements

Gets the capacity of this memory mapped file in the number of structs it can store.
Declaration
public long CapacityElements { get; }
Property Value
Type Description
System.Int64
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ElementSize

Gets the size in bytes of one element.
Declaration
public int ElementSize { get; }
Property Value
Type Description
System.Int32
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ElementSizeFixed

Returns true if this accessor is for elements of a fixed size.
Declaration
public virtual bool ElementSizeFixed { get; }
Property Value
Type Description
System.Boolean

Methods

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CopyTo(Stream, Int64, Int32, Byte[])

Copies the data in this accessor to the given stream starting at the given position until position + length.
Declaration
public void CopyTo(Stream stream, long position, int length, byte[] buffer)
Parameters
Type Name Description
System.IO.Stream stream
System.Int64 position
System.Int32 length
System.Byte[] buffer
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CopyTo(Stream, Int64, Int32)

Copies the data in this accessor to the given stream starting at the given position until position + length.
Declaration
public void CopyTo(Stream stream, long position, int length)
Parameters
Type Name Description
System.IO.Stream stream
System.Int64 position
System.Int32 length
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CopyTo(Stream)

Copies the data in this accessor to the given stream.
Declaration
public void CopyTo(Stream stream)
Parameters
Type Name Description
System.IO.Stream stream
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Dispose()

Disposes of all native resources associated with this object.
Declaration
public virtual void Dispose()
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ReadArray(Int64, T[], Int32, Int32)

Reads elements starting at the given position.
Declaration
public virtual int ReadArray(long position, T[] array, int offset, int count)
Parameters
Type Name Description
System.Int64 position
T[] array
System.Int32 offset
System.Int32 count
Returns
Type Description
System.Int32
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ReadFrom(Int64, ref T)

Reads appropriate amount of bytes from the default stream at the given position and returns the structure.
Declaration
public virtual long ReadFrom(long position, ref T structure)
Parameters
Type Name Description
System.Int64 position
T structure
Returns
Type Description
System.Int64
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ReadFrom(Stream, Int64, ref T)

Reads appropriate amount of bytes from the given stream at the given position and returns the structure.
Declaration
public abstract long ReadFrom(Stream stream, long position, ref T structure)
Parameters
Type Name Description
System.IO.Stream stream
System.Int64 position
T structure
Returns
Type Description
System.Int64
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WriteArray(Int64, T[], Int32, Int32)

Writes an array of elements at the given position.
Declaration
public virtual long WriteArray(long position, T[] array, int offset, int count)
Parameters
Type Name Description
System.Int64 position
T[] array
System.Int32 offset
System.Int32 count
Returns
Type Description
System.Int64
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WriteTo(Int64, ref T)

Converts the structure to bytes and writes them to the stream default.
Declaration
public virtual long WriteTo(long position, ref T structure)
Parameters
Type Name Description
System.Int64 position
T structure
Returns
Type Description
System.Int64
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WriteTo(Stream, Int64, ref T)

Converts the structure to bytes and writes them to the given stream.
Declaration
public abstract long WriteTo(Stream stream, long position, ref T structure)
Parameters
Type Name Description
System.IO.Stream stream
System.Int64 position
T structure
Returns
Type Description
System.Int64

Implements

System.IDisposable

Extension Methods