UnmanagedMemoryStream

UnmanagedMemoryStream class

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.

class UnmanagedMemoryStream : public System::IO::Stream

Methods

MethodDescription
virtual System::SharedPtr<System::IAsyncResult> BeginRead(System::ArrayPtr<uint8_t>, int, int, System::AsyncCallback, System::SharedPtr<System::Object>)Initiates an asynchronous read operation.
virtual System::SharedPtr<System::IAsyncResult> BeginWrite(System::ArrayPtr<uint8_t>, int, int, System::AsyncCallback, System::SharedPtr<System::Object>)Initiates an asynchronous write operation.
virtual void Close()Closes the stream.
void CopyTo(const SharedPtr<Stream>&)Copies bytes to the specified stream.
void CopyTo(const SharedPtr<Stream>&, int32_t)Copies bytes to the specified stream, using the specified buffer size.
void Dispose() overrideReleases all resources used by the current object and closes the stream.
virtual int EndRead(System::SharedPtr<System::IAsyncResult>)Waits until the specified asynchronous read operation completes.
virtual void EndWrite(System::SharedPtr<System::IAsyncResult>)Ends an asynchronous write operation. Waits until the specified asynchronous write operation completes.
virtual bool Equals(ptr)Compares objects using C# Object.Equals semantics.
static std::enable_if<IsSmartPtr<T1>::value&&IsSmartPtr<T2>::value, bool>::type Equals(T1 const&, T2 const&)Compares reference type objects in C# style.
static std::enable_if<!IsSmartPtr<T1>::value&&!IsSmartPtr<T2>::value, bool>::type Equals(T1 const&, T2 const&)Compares value type objects in C# style.
static bool Equals(float const&, float const&)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.
static bool Equals(double const&, double const&)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.
virtual bool FastCast(const Details::FastRttiBase&, void **) constFor internal purposes only.
void Flush() overrideDoes nothing.
bool get_CanRead() const overrideDetermines if the stream is readable.
bool get_CanSeek() const overrideDetermines if the stream supports seeking.
virtual bool get_CanTimeout() constGets a value that determines whether the current stream can time out.
bool get_CanWrite() const overrideDetermines if the stream is writable.
virtual int64_t get_Capacity() constReturns the current capacity of the underlying memory buffer.
int64_t get_Length() const overrideReturns the length of the stream in bytes.
int64_t get_Position() const overrideReturns the current position of the stream.
uint8_t * get_PositionPointer()NOT IMPLEMENTED.
virtual int get_ReadTimeout() constGets a value, in milliseconds, that determines how long the stream will attempt to read before timing out.
virtual int get_WriteTimeout() constGets a value, in milliseconds, that determines how long the stream will attempt to write before timing out.
Detail::SmartPtrCounter * GetCounter()Gets reference counter data structure associated with the object.
virtual int32_t GetHashCode() constAnalog of C# Object.GetHashCode() method. Enables hashing of custom objects.
virtual const TypeInfo& GetType() constGets actual type of object. Analog of C# System.Object.GetType() call.
virtual bool Is(const TypeInfo&) constCheck if object represents an instance of type described by targetType. Analog of C# ‘is’ operator.
void Lock()Implements C# lock() statement locking. Call directly or use LockContext sentry object.
virtual ptr MemberwiseClone() constAnalog of C# Object.MemberwiseClone() method. Enables cloning custom types.
Object()Creates object. Initializes all internal data structures.
Object(Object const&)Copy constructor. Doesn’t copy anything, really, just initializes new object and enables copy constructing subclasses.
Object& operator=(Object const&)Assignment operator. Doesn’t copy anything, really, just initializes new object and enables copy constructing subclasses.
int32_t Read(const ArrayPtr<uint8_t>&, int32_t, int32_t) overrideReads the specified number of bytes from the stream and writes them to the specified byte array.
int32_t Read(const System::Details::ArrayView<uint8_t>&, int32_t, int32_t) overrideReads the specified number of bytes from the stream and writes them to the specified byte array.
int32_t Read(const System::Details::StackArray<uint8_t, N>&, int32_t, int32_t)Reads the specified number of bytes from the stream and writes them to the specified byte array.
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.
static bool ReferenceEquals(ptr const&, ptr const&)Compares objects by reference.
static std::enable_if<!IsSmartPtr<T>::value, bool>::type ReferenceEquals(T const&, T const&)Compares objects by reference.
static std::enable_if<!IsSmartPtr<T>::value, bool>::type ReferenceEquals(T const&, std::nullptr_t)Reference-compares value type object with nullptr.
bool ReferenceEquals(String const&, std::nullptr_t)Specialization of Object::ReferenceEquals for case of string and nullptr.
bool ReferenceEquals(String const&, String const&)Specialization of Object::ReferenceEquals for case of strings.
int RemovedSharedRefs(int)Decreases shared reference count by specified value.
int64_t Seek(int64_t, SeekOrigin) overrideSets the position of the stream represented by the current object.
void set_Position(int64_t) overrideSets the stream’s position.
void set_PositionPointer(uint8_t *)NOT IMPLEMENTED.
virtual void set_ReadTimeout(int)Sets a value that determines whether the current stream can time out.
virtual void set_WriteTimeout(int)Sets a value, in milliseconds, that determines how long the stream will attempt to read before timing out.
void SetLength(int64_t) overrideNOT IMPLEMENTED.
virtual void SetTemplateWeakPtr(uint32_t)Set n’th template argument a weak pointer (rather than shared). Allows switching pointers in containers to weak mode.
int SharedCount() constGets current value of shared reference counter.
Object * SharedRefAdded()Increments shared reference count. Shouldn’t be called directly; instead, use smart pointers or ThisProtector.
int SharedRefRemovedSafe()Decrements and returns shared reference count. Shouldn’t be called directly; instead, use smart pointers or ThisProtector.
virtual String ToString() constAnalog of C# Object.ToString() method. Enables converting custom objects to string.
static const TypeInfo& Type()Implements C# typeof(System.Object) construct.
void Unlock()Implements C# lock() statement unlocking. Call directly or use LockContext sentry object.
UnmanagedMemoryStream(uint8_t *, int64_t)Constructs a new instance of UnmanagedMemoryStream.
UnmanagedMemoryStream(uint8_t *, int64_t, int64_t, FileAccess)Constructs a new instance of UnmanagedMemoryStream.
Detail::SmartPtrCounter * WeakRefAdded()Increments weak reference count. Shouldn’t be called directly; instead, use smart pointers or ThisProtector.
void WeakRefRemoved()Decrements weak reference count. Shouldn’t be called directly; instead, use smart pointers or ThisProtector.
void Write(const ArrayPtr<uint8_t>&, int32_t, int32_t) overrideNOT IMPLEMENTED.
void Write(const System::Details::ArrayView<uint8_t>&, int32_t, int32_t) overrideNOT IMPLEMENTED.
void Write(const System::Details::StackArray<uint8_t, N>&, int32_t, int32_t)Writes the specified subrange of bytes from the specified byte array to the stream.
virtual void WriteByte(uint8_t)Writes the specified unsigned 8-bit integer value to the stream.
virtual ~Object()Destroys object. Frees all internal data structures.

Fields

FieldDescription
static NullA stream with no underlying storage.

See Also