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Interlocked.Read Method

Note: This method is new in the .NET Framework version 2.0.

Returns a 64-bit value, loaded as an atomic operation.

Namespace: System.Threading
Assembly: mscorlib (in mscorlib.dll)

public static long Read (
	ref long location
)
public static long Read (
	/** @ref */ long location
)
JScript does not support passing value-type arguments by reference.

Parameters

location

The 64-bit value to be loaded.

Return Value

The loaded value.

The Read method is unnecessary on 64-bit systems, because 64-bit read operations are already atomic. On 32-bit systems, 64-bit read operations are not atomic unless performed using Read.

The Read method and the 64-bit overloads of the Increment, Decrement, and Add methods are truly atomic only on systems where a System.IntPtr is 64 bits long. On other systems, these methods are atomic with respect to each other, but not with respect to other means of accessing the data. Thus, to be thread safe on 32-bit systems, any access to a 64-bit value must be made through the members of the Interlocked class.

NoteNote

IntPtr is a platform-specific type.

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0

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