Provides access to unmanaged memory. Objects of this class should only be allocated using System::MakeObject() function. Never create instance of this type on stack or using operator new, as it will result in runtime errors and/or assertion faults. Always wrap this class into System::SmartPtr pointer and use this pointer to pass it to functions as argument. More...

#include <unmanaged_memory_stream.h>

Inherits System::IO::Stream.

Public Member Functions
virtual bool	get_CanRead () const override
	Determines if the stream is readable. More...

virtual bool	get_CanSeek () const override
	Determines if the stream supports seeking. More...

virtual bool	get_CanWrite () const override
	Determines if the stream is writable. More...

virtual int64_t	get_Length () const override
	Returns the length of the stream in bytes. More...

virtual int64_t	get_Capacity () const
	Returns the current capacity of the underlying memory buffer. More...

virtual int64_t	get_Position () const override
	Returns the current position of the stream. More...

virtual void	set_Position (int64_t value) override
	Sets the stream's position. More...

uint8_t *	get_PositionPointer ()
	NOT IMPLEMENTED. More...

void	set_PositionPointer (uint8_t *value)
	NOT IMPLEMENTED. More...

	UnmanagedMemoryStream (uint8_t *pointer, int64_t length)
	Constructs a new instance of UnmanagedMemoryStream. More...

	UnmanagedMemoryStream (uint8_t *pointer, int64_t length, int64_t capacity, FileAccess access)
	Constructs a new instance of UnmanagedMemoryStream. More...

virtual void	Flush () override
	Does nothing. More...

virtual int32_t	Read (const ArrayPtr< uint8_t > &buffer, int32_t offset, int32_t count) override
	Reads the specified number of bytes from the stream and writes them to the specified byte array. More...

virtual int64_t	Seek (int64_t offset, SeekOrigin loc) override
	Sets the position of the stream represented by the current object. More...

virtual void	SetLength (int64_t value) override
	NOT IMPLEMENTED. More...

virtual void	Write (const ArrayPtr< uint8_t > &buffer, int32_t offset, int32_t count) override
	NOT IMPLEMENTED. More...

virtual int32_t	Read (const System::Details::ArrayView< uint8_t > &buffer, int32_t offset, int32_t count) override
	Reads the specified number of bytes from the stream and writes them to the specified byte array. More...

virtual void	Write (const System::Details::ArrayView< uint8_t > &buffer, int32_t offset, int32_t count) override
	NOT IMPLEMENTED. More...

Public Member Functions inherited from System::IO::Stream
virtual int	ReadByte ()
	Reads a single byte from the stream and returns a 32-bit integer value equivalent to the value of the read byte. More...

virtual void	WriteByte (uint8_t value)
	Writes the specified unsigned 8-bit integer value to the stream. More...

virtual int32_t	Read (const ArrayPtr< uint8_t > &buffer, int32_t offset, int32_t count)=0
	Reads the specified number of bytes from the stream and writes them to the specified byte array. More...

virtual void	Write (const ArrayPtr< uint8_t > &buffer, int32_t offset, int32_t count)=0
	Writes the specified subrange of bytes from the specified byte array to the stream. More...

virtual int32_t	Read (const System::Details::ArrayView< uint8_t > &buffer, int32_t offset, int32_t count)
	Reads the specified number of bytes from the stream and writes them to the specified byte array. More...

virtual void	Write (const System::Details::ArrayView< uint8_t > &buffer, int32_t offset, int32_t count)
	Writes the specified subrange of bytes from the specified byte array to the stream. More...

template<std::size_t N>
int32_t	Read (const System::Details::StackArray< uint8_t, N > &buffer, int32_t offset, int32_t count)
	Reads the specified number of bytes from the stream and writes them to the specified byte array. More...

template<std::size_t N>
void	Write (const System::Details::StackArray< uint8_t, N > &buffer, int32_t offset, int32_t count)
	Writes the specified subrange of bytes from the specified byte array to the stream. More...

virtual int64_t	Seek (int64_t offset, SeekOrigin origin)=0
	Sets the position of the stream represented by the current object. More...

virtual void	SetLength (int64_t value)=0
	Sets the length of the stream represented by the current object. More...

virtual void	Flush ()=0
	Clears this stream's buffers and writes all buffered data to the underlying storage. More...

virtual void	Close ()
	Closes the stream. More...

void	Dispose () override
	Releases all resources used by the current object and closes the stream. More...

virtual System::SharedPtr< System::IAsyncResult >	BeginRead (System::ArrayPtr< uint8_t > buffer, int offset, int count, System::AsyncCallback callback, System::SharedPtr< System::Object > state)
	Initiates an asynchronous read operation. More...

virtual System::SharedPtr< System::IAsyncResult >	BeginWrite (System::ArrayPtr< uint8_t > buffer, int offset, int count, System::AsyncCallback callback, System::SharedPtr< System::Object > state)
	Initiates an asynchronous write operation. More...

virtual int	EndRead (System::SharedPtr< System::IAsyncResult > asyncResult)
	Waits until the specified asynchronous read operation completes. More...

virtual void	EndWrite (System::SharedPtr< System::IAsyncResult > asyncResult)
	Ends an asynchronous write operation. Waits until the specified asynchronous write operation completes. More...

void	CopyTo (const SharedPtr< Stream > &destination)
	Copies bytes to the specified stream. More...

void	CopyTo (const SharedPtr< Stream > &destination, int32_t buffer_size)
	Copies bytes to the specified stream, using the specified buffer size. More...

virtual void	set_Position (int64_t value)=0
	Sets the stream's position. More...

virtual int64_t	get_Position () const =0
	Returns the current position of the stream. More...

virtual int64_t	get_Length () const =0
	Returns the length of the stream in bytes. More...

virtual bool	get_CanRead () const =0
	Determines if the stream is readable. More...

virtual bool	get_CanSeek () const =0
	Determines if the stream supports seeking. More...

virtual bool	get_CanWrite () const =0
	Determines if the stream is writable. More...

virtual bool	get_CanTimeout () const
	Gets a value that determines whether the current stream can time out. More...

virtual void	set_ReadTimeout (int timeout)
	Sets a value that determines whether the current stream can time out. More...

virtual int	get_ReadTimeout () const
	Gets a value, in milliseconds, that determines how long the stream will attempt to read before timing out. More...

virtual void	set_WriteTimeout (int timeout)
	Sets a value, in milliseconds, that determines how long the stream will attempt to read before timing out. More...

virtual int	get_WriteTimeout () const
	Gets a value, in milliseconds, that determines how long the stream will attempt to write before timing out. More...

virtual void	Dispose ()
	Does nothing. More...

Public Member Functions inherited from System::Object
	Object ()
	Creates object. Initializes all internal data structures. More...

virtual	~Object ()
	Destroys object. Frees all internal data structures. More...

	Object (Object const &x)
	Copy constructor. Doesn't copy anything, really, just initializes new object and enables copy constructing subclasses. More...

Object &	operator= (Object const &x)
	Assignment operator. Doesn't copy anything, really, just initializes new object and enables copy constructing subclasses. More...

Object *	SharedRefAdded ()
	Increments shared reference count. Shouldn't be called directly; instead, use smart pointers or ThisProtector. More...

int	SharedRefRemovedSafe ()
	Decrements and returns shared reference count. Shouldn't be called directly; instead, use smart pointers or ThisProtector. More...

int	RemovedSharedRefs (int count)
	Decreases shared reference count by specified value. More...

Detail::SmartPtrCounter *	WeakRefAdded ()
	Increments weak reference count. Shouldn't be called directly; instead, use smart pointers or ThisProtector. More...

void	WeakRefRemoved ()
	Decrements weak reference count. Shouldn't be called directly; instead, use smart pointers or ThisProtector. More...

Detail::SmartPtrCounter *	GetCounter ()
	Gets reference counter data structure associated with the object. More...

int	SharedCount () const
	Gets current value of shared reference counter. More...

void	Lock ()
	Implements C# lock() statement locking. Call directly or use LockContext sentry object. More...

void	Unlock ()
	Implements C# lock() statement unlocking. Call directly or use LockContext sentry object. More...

virtual bool	Equals (ptr obj)
	Compares objects using C# Object.Equals semantics. More...

virtual int32_t	GetHashCode () const
	Analog of C# Object.GetHashCode() method. Enables hashing of custom objects. More...

virtual String	ToString () const
	Analog of C# Object.ToString() method. Enables converting custom objects to string. More...

virtual ptr	MemberwiseClone () const
	Analog of C# Object.MemberwiseClone() method. Enables cloning custom types. More...

virtual const TypeInfo &	GetType () const
	Gets actual type of object. Analog of C# System.Object.GetType() call. More...

virtual bool	Is (const TypeInfo &targetType) const
	Check if object represents an instance of type described by targetType. Analog of C# 'is' operator. More...

virtual void	SetTemplateWeakPtr (uint32_t argument)
	Set n'th template argument a weak pointer (rather than shared). Allows switching pointers in containers to weak mode. More...

virtual bool	FastCast (const Details::FastRttiBase &helper, void **out_ptr) const
	For internal purposes only. More...

template<>
bool	ReferenceEquals (String const &str, std::nullptr_t)
	Specialization of Object::ReferenceEquals for case of string and nullptr. More...

template<>
bool	ReferenceEquals (String const &str1, String const &str2)
	Specialization of Object::ReferenceEquals for case of strings. More...

Protected Member Functions
uint8_t *	get_Pointer ()
	NOT IMPLEMENTED. More...

	UnmanagedMemoryStream ()
	Constructs a new instnace of UnmanagedMemoryStream class. More...

	UnmanagedMemoryStream (uint8_t *pointer, int64_t length, int64_t capacity, FileAccess access, bool skipSecurityCheck)
	Constructs a new instance of UnmanagedMemoryStream. More...

void	Initialize (uint8_t *pointer, int64_t length, int64_t capacity, FileAccess access)
	Initializes a newly created instance of UnmanagedMemoryStream class. More...

void	Initialize (uint8_t *pointer, int64_t length, int64_t capacity, FileAccess access, bool skipSecurityCheck)
	Initializes a newly created instance of UnmanagedMemoryStream class. More...

virtual void	Dispose (bool disposing) override
	Releases all resources used by the current object and closes the stream. More...

virtual void	Dispose (bool disposing)
	Releases all resources used by the current object and closes the stream. More...

Static Protected Member Functions
static void	Memcpy (const System::Details::ArrayView< uint8_t > &dest, int destIndex, uint8_t *src, int srcIndex, int len)
	Copies bytes from the specified source buffer starting to the specified byte array. More...

Protected Attributes
bool	_isOpen
	Indicates if the stream is in open state. More...

Additional Inherited Members
Public Types inherited from System::IO::Stream
typedef SharedPtr< Stream >	Ptr
	An alias for a shared pointer to this class. More...

Public Types inherited from System::Object
typedef SmartPtr< Object >	ptr
	Alias for smart pointer type. More...

Static Public Member Functions inherited from System::Object
static bool	ReferenceEquals (ptr const &objA, ptr const &objB)
	Compares objects by reference. More...

template<typename T >
static std::enable_if<!IsSmartPtr< T >::value, bool >::type	ReferenceEquals (T const &objA, T const &objB)
	Compares objects by reference. More...

template<typename T >
static std::enable_if<!IsSmartPtr< T >::value, bool >::type	ReferenceEquals (T const &objA, std::nullptr_t)
	Reference-compares value type object with nullptr. More...

template<typename T1 , typename T2 >
static std::enable_if< IsSmartPtr< T1 >::value &&IsSmartPtr< T2 >::value, bool >::type	Equals (T1 const &objA, T2 const &objB)
	Compares reference type objects in C# style. More...

template<typename T1 , typename T2 >
static std::enable_if<!IsSmartPtr< T1 >::value &&!IsSmartPtr< T2 >::value, bool >::type	Equals (T1 const &objA, T2 const &objB)
	Compares value type objects in C# style. More...

static const TypeInfo &	Type ()
	Implements C# typeof(System.Object) construct. More...

template<>
bool	Equals (float const &objA, float const &objB)
	Emulates C#-style floating point comparison where two NaNs are considered equal even though according to IEC 60559:1989 NaN is not equal to any value, including NaN. More...

template<>
bool	Equals (double const &objA, double const &objB)
	Emulates C#-style floating point comparison where two NaNs are considered equal even though according to IEC 60559:1989 NaN is not equal to any value, including NaN. More...

Static Public Attributes inherited from System::IO::Stream
static const System::SharedPtr< Stream >	Null
	A stream with no underlying storage. More...

Detailed Description

Provides access to unmanaged memory. Objects of this class should only be allocated using System::MakeObject() function. Never create instance of this type on stack or using operator new, as it will result in runtime errors and/or assertion faults. Always wrap this class into System::SmartPtr pointer and use this pointer to pass it to functions as argument.

Constructor & Destructor Documentation

◆ UnmanagedMemoryStream() [1/4]

System::IO::UnmanagedMemoryStream::UnmanagedMemoryStream	(	uint8_t *	pointer,
		int64_t	length
	)

Constructs a new instance of UnmanagedMemoryStream.

Parameters

pointer	A pointer to unmanaged buffer
length	The size of unmanaged buffer in bytes

◆ UnmanagedMemoryStream() [2/4]

System::IO::UnmanagedMemoryStream::UnmanagedMemoryStream	(	uint8_t *	pointer,
		int64_t	length,
		int64_t	capacity,
		FileAccess	access
	)

Constructs a new instance of UnmanagedMemoryStream.

Parameters

pointer	A pointer to unmanaged buffer
length	The size of unmanaged buffer in bytes
capacity	The total amount of memory assigned to the stream
access	Specifies if the stream should be read-only, write-onle or both

◆ UnmanagedMemoryStream() [3/4]

System::IO::UnmanagedMemoryStream::UnmanagedMemoryStream ( )

protected

Constructs a new instnace of UnmanagedMemoryStream class.

◆ UnmanagedMemoryStream() [4/4]

System::IO::UnmanagedMemoryStream::UnmanagedMemoryStream	(	uint8_t *	pointer,
		int64_t	length,
		int64_t	capacity,
		FileAccess	access,
		bool	skipSecurityCheck
	)

protected

Constructs a new instance of UnmanagedMemoryStream.

Parameters

pointer	A pointer to unmanaged buffer
length	The size of unmanaged buffer in bytes
capacity	The total amount of memory assigned to the stream
access	Specifies if the stream should be read-only, write-onle or both
skipSecurityCheck	IGNORED

Member Function Documentation

◆ Dispose()

virtual void System::IO::UnmanagedMemoryStream::Dispose ( bool disposing )

overrideprotectedvirtual

Releases all resources used by the current object and closes the stream.

Parameters

disposing IGNORED

Reimplemented from System::IO::Stream.

◆ Flush()

virtual void System::IO::UnmanagedMemoryStream::Flush ( )

overridevirtual

Does nothing.

Implements System::IO::Stream.

◆ get_CanRead()

virtual bool System::IO::UnmanagedMemoryStream::get_CanRead ( ) const

overridevirtual

Determines if the stream is readable.

Returns: True if the stream is readable; otherwise - false

Implements System::IO::Stream.

◆ get_CanSeek()

virtual bool System::IO::UnmanagedMemoryStream::get_CanSeek ( ) const

overridevirtual

Determines if the stream supports seeking.

Returns: True if the stream supports seeking; otherwise - false

Implements System::IO::Stream.

◆ get_CanWrite()

virtual bool System::IO::UnmanagedMemoryStream::get_CanWrite ( ) const

overridevirtual

Determines if the stream is writable.

Returns: True if the stream is writable; otherwise - false

Implements System::IO::Stream.

◆ get_Capacity()

virtual int64_t System::IO::UnmanagedMemoryStream::get_Capacity ( ) const

virtual

Returns the current capacity of the underlying memory buffer.

◆ get_Length()

virtual int64_t System::IO::UnmanagedMemoryStream::get_Length ( ) const

overridevirtual

Returns the length of the stream in bytes.

Implements System::IO::Stream.

◆ get_Pointer()

uint8_t * System::IO::UnmanagedMemoryStream::get_Pointer ( )

protected

NOT IMPLEMENTED.

◆ get_Position()

virtual int64_t System::IO::UnmanagedMemoryStream::get_Position ( ) const

overridevirtual

Returns the current position of the stream.

Implements System::IO::Stream.

◆ get_PositionPointer()

uint8_t * System::IO::UnmanagedMemoryStream::get_PositionPointer ( )

NOT IMPLEMENTED.

◆ Initialize() [1/2]

void System::IO::UnmanagedMemoryStream::Initialize	(	uint8_t *	pointer,
		int64_t	length,
		int64_t	capacity,
		FileAccess	access
	)

protected

Initializes a newly created instance of UnmanagedMemoryStream class.

Parameters

pointer	A pointer to unmanaged buffer
length	The size of unmanaged buffer in bytes
capacity	The total amount of memory assigned to the stream
access	Specifies if the stream should be read-only, write-onle or both

◆ Initialize() [2/2]

void System::IO::UnmanagedMemoryStream::Initialize	(	uint8_t *	pointer,
		int64_t	length,
		int64_t	capacity,
		FileAccess	access,
		bool	skipSecurityCheck
	)

protected

Initializes a newly created instance of UnmanagedMemoryStream class.

Parameters

pointer	A pointer to unmanaged buffer
length	The size of unmanaged buffer in bytes
capacity	The total amount of memory assigned to the stream
access	Specifies if the stream should be read-only, write-onle or both
skipSecurityCheck	IGNORED

◆ Memcpy()

static void System::IO::UnmanagedMemoryStream::Memcpy	(	const System::Details::ArrayView< uint8_t > &	dest,
		int	destIndex,
		uint8_t *	src,
		int	srcIndex,
		int	len
	)

staticprotected

Copies bytes from the specified source buffer starting to the specified byte array.

Parameters

dest	A byte array view to copy to
destIndex	A 0-based index in `dest` at which to start writing
src	A pointer to the buffer to copy from
srcIndex	A 0-based index in `src` to start copying from
len	The number of bytes to copy

◆ Read() [1/2]

virtual int32_t System::IO::UnmanagedMemoryStream::Read	(	const ArrayPtr< uint8_t > &	buffer,
		int32_t	offset,
		int32_t	count
	)

overridevirtual

Reads the specified number of bytes from the stream and writes them to the specified byte array.

Parameters

buffer	The byte array to write the read bytes to
offset	A 0-based position in `buffer` to start writing at
count	The number of bytes to read

Returns: The number of bytes read

Implements System::IO::Stream.

◆ Read() [2/2]

virtual int32_t System::IO::UnmanagedMemoryStream::Read	(	const System::Details::ArrayView< uint8_t > &	buffer,
		int32_t	offset,
		int32_t	count
	)

overridevirtual

Reads the specified number of bytes from the stream and writes them to the specified byte array.

Parameters

buffer	The byte array view to write the read bytes to
offset	A 0-based position in `buffer` to start writing at
count	The number of bytes to read

Returns: The number of bytes read

Reimplemented from System::IO::Stream.

◆ Seek()

virtual int64_t System::IO::UnmanagedMemoryStream::Seek	(	int64_t	offset,
		SeekOrigin	loc
	)

overridevirtual

Sets the position of the stream represented by the current object.

Parameters

offset	The byte offset relative to a position specified by `origin`
loc	Specifies the position from which and the direction toward which the offset is calculated

Returns: The new position of the stream

Implements System::IO::Stream.

◆ set_Position()

virtual void System::IO::UnmanagedMemoryStream::set_Position ( int64_t value )

overridevirtual

Sets the stream's position.

Parameters

value The byte offset to set the stream's position to

Implements System::IO::Stream.

◆ set_PositionPointer()

void System::IO::UnmanagedMemoryStream::set_PositionPointer ( uint8_t * value )

NOT IMPLEMENTED.

◆ SetLength()

virtual void System::IO::UnmanagedMemoryStream::SetLength ( int64_t value )

overridevirtual

NOT IMPLEMENTED.

Exceptions

NotImplementedException Always

Implements System::IO::Stream.

◆ Write() [1/2]

virtual void System::IO::UnmanagedMemoryStream::Write	(	const ArrayPtr< uint8_t > &	buffer,
		int32_t	offset,
		int32_t	count
	)

overridevirtual

NOT IMPLEMENTED.

Exceptions

NotImplementedException Always

Implements System::IO::Stream.

◆ Write() [2/2]

virtual void System::IO::UnmanagedMemoryStream::Write	(	const System::Details::ArrayView< uint8_t > &	buffer,
		int32_t	offset,
		int32_t	count
	)

overridevirtual

NOT IMPLEMENTED.

Exceptions

NotImplementedException Always

Reimplemented from System::IO::Stream.

Member Data Documentation

◆ _isOpen

bool System::IO::UnmanagedMemoryStream::_isOpen

protected

Indicates if the stream is in open state.

Public Member Functions

Protected Member Functions

Static Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ UnmanagedMemoryStream() [1/4]

◆ UnmanagedMemoryStream() [2/4]

◆ UnmanagedMemoryStream() [3/4]

◆ UnmanagedMemoryStream() [4/4]

Member Function Documentation

◆ Dispose()

◆ Flush()

◆ get_CanRead()

◆ get_CanSeek()

◆ get_CanWrite()

◆ get_Capacity()

◆ get_Length()

◆ get_Pointer()

◆ get_Position()

◆ get_PositionPointer()

◆ Initialize() [1/2]

◆ Initialize() [2/2]

◆ Memcpy()

◆ Read() [1/2]

◆ Read() [2/2]

◆ Seek()

◆ set_Position()

◆ set_PositionPointer()

◆ SetLength()

◆ Write() [1/2]

◆ Write() [2/2]

Member Data Documentation

◆ _isOpen