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SafeBuffer Class

.NET Framework (current version)
 

Provides a controlled memory buffer that can be used for reading and writing. Attempts to access memory outside the controlled buffer (underruns and overruns) raise exceptions.

Namespace:   System.Runtime.InteropServices
Assembly:  mscorlib (in mscorlib.dll)


[SecurityCriticalAttribute]
public abstract class SafeBuffer : SafeHandleZeroOrMinusOneIsInvalid

NameDescription
System_CAPS_protmethodSafeBuffer(Boolean)

Creates a new instance of the SafeBuffer class, and specifies whether the buffer handle is to be reliably released.

NameDescription
System_CAPS_pubpropertyByteLength

Gets the size of the buffer, in bytes.

System_CAPS_pubpropertyIsClosed

Gets a value indicating whether the handle is closed.(Inherited from SafeHandle.)

System_CAPS_pubpropertyIsInvalid

Gets a value that indicates whether the handle is invalid.(Inherited from SafeHandleZeroOrMinusOneIsInvalid.)

NameDescription
System_CAPS_pubmethodAcquirePointer(Byte*)

Obtains a pointer from a SafeBuffer object for a block of memory.

System_CAPS_pubmethodClose()

Marks the handle for releasing and freeing resources.(Inherited from SafeHandle.)

System_CAPS_pubmethodDangerousAddRef(Boolean)

Manually increments the reference counter on SafeHandle instances.(Inherited from SafeHandle.)

System_CAPS_pubmethodDangerousGetHandle()

Returns the value of the handle field.(Inherited from SafeHandle.)

System_CAPS_pubmethodDangerousRelease()

Manually decrements the reference counter on a SafeHandle instance.(Inherited from SafeHandle.)

System_CAPS_pubmethodDispose()

Releases all resources used by the SafeHandle class.(Inherited from SafeHandle.)

System_CAPS_protmethodDispose(Boolean)

Releases the unmanaged resources used by the SafeHandle class specifying whether to perform a normal dispose operation.(Inherited from SafeHandle.)

System_CAPS_pubmethodEquals(Object)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_protmethodFinalize()

Frees all resources associated with the handle.(Inherited from SafeHandle.)

System_CAPS_pubmethodGetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_pubmethodInitialize(UInt32, UInt32)

Specifies the allocation size of the memory buffer by using the specified number of elements and element size. You must call this method before you use the SafeBuffer instance.

System_CAPS_pubmethodInitialize(UInt64)

Defines the allocation size of the memory region in bytes. You must call this method before you use the SafeBuffer instance.

System_CAPS_pubmethodInitialize<T>(UInt32)

Defines the allocation size of the memory region by specifying the number of value types. You must call this method before you use the SafeBuffer instance.

System_CAPS_protmethodMemberwiseClone()

Creates a shallow copy of the current Object.(Inherited from Object.)

System_CAPS_pubmethodRead<T>(UInt64)

Reads a value type from memory at the specified offset.

System_CAPS_pubmethodReadArray<T>(UInt64, T[], Int32, Int32)

Reads the specified number of value types from memory starting at the offset, and writes them into an array starting at the index.

System_CAPS_protmethodReleaseHandle()

When overridden in a derived class, executes the code required to free the handle.(Inherited from SafeHandle.)

System_CAPS_pubmethodReleasePointer()

Releases a pointer that was obtained by the AcquirePointer method.

System_CAPS_protmethodSetHandle(IntPtr)

Sets the handle to the specified pre-existing handle.(Inherited from SafeHandle.)

System_CAPS_pubmethodSetHandleAsInvalid()

Marks a handle as no longer used.(Inherited from SafeHandle.)

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

System_CAPS_pubmethodWrite<T>(UInt64, T)

Writes a value type to memory at the given location.

System_CAPS_pubmethodWriteArray<T>(UInt64, T[], Int32, Int32)

Writes the specified number of value types to a memory location by reading bytes starting from the specified location in the input array.

NameDescription
System_CAPS_protfieldhandle

Specifies the handle to be wrapped.(Inherited from SafeHandle.)

You must call the SafeBuffer.Initialize method before you use any instance of SafeBuffer. To avoid races when you store an instance of a SafeBuffer object in a static variable, you should use one of the following approaches:

  • Create a lock when publishing the SafeBuffer.

  • Create a local variable, initialize the SafeBuffer, and then assign the SafeBuffer to the static variable, for example, by using the Interlocked.CompareExchange<T> method.

System_CAPS_noteNote

Assignments in a static class constructor are implicitly locked.

SecurityCriticalAttribute

requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.

Universal Windows Platform
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Windows Phone
Available since 8.1

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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