Interlocked.Read(Int64) Method
Definition
Important
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Returns a 64-bit value, loaded as an atomic operation.
public:
static long Read(long % location);public static long Read(ref long location);static member Read : int64 -> int64Public Shared Function Read (ByRef location As Long) As LongParameters
- location
- Int64
The 64-bit value to be loaded.
Returns
The loaded value.
Remarks
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.
Important
On 32-bit platforms, despite taking a readonly reference parameter, this method requires write access to the memory location because it uses CompareExchange internally to ensure atomicity. Attempting to read from read-only memory (such as memory-mapped files opened with read-only access) can result in an AccessViolationException.