OpCodes.Volatile Field

Definition

Namespace:

System.Reflection.Emit

Assembly:

System.Reflection.Primitives.dll

Source:

OpCodes.cs

Specifies that an address currently atop the evaluation stack might be volatile, and the results of reading that location cannot be cached or that multiple stores to that location cannot be suppressed.

public: static initonly System::Reflection::Emit::OpCode Volatile;

public static readonly System.Reflection.Emit.OpCode Volatile;

 staticval mutable Volatile : System.Reflection.Emit.OpCode

Public Shared ReadOnly Volatile As OpCode 

Field Value

OpCode

Remarks

The following table lists the instruction's hexadecimal and Microsoft Intermediate Language (MSIL) assembly format, along with a brief reference summary:

Format	Assembly Format	Description
FE 13	volatile.	Indicates that the subsequent pointer reference is volatile.

The stack transitional behavior, in sequential order, is:

1. An address is pushed onto the stack.

volatile. specifies that the address is a volatile address (that is, it can be referenced externally to the current thread of execution) and the results of reading that location cannot be cached or that multiple stores to that location cannot be suppressed. Marking an access as volatile affects only that single access; other accesses to the same location must be marked separately. Access to volatile locations need not be performed atomically.

The Unaligned and volatile prefixes can be combined in either order. They must immediately precede a ldind, stind, ldfld, stfld, ldobj, stobj, initblk, or cpblk instruction. Only the volatile prefix is allowed for the Ldsfld and Stsfld instructions.

The following Emit method overload can use the volatile opcode:

• ILGenerator.Emit(OpCode)