OpCodes.Localloc Field

Definition

Namespace:

System.Reflection.Emit

Assembly:

System.Reflection.Primitives.dll

Source:

OpCodes.cs

Allocates a certain number of bytes from the local dynamic memory pool and pushes the address (a transient pointer, type *) of the first allocated byte onto the evaluation stack.

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

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

 staticval mutable Localloc : System.Reflection.Emit.OpCode

Public Shared ReadOnly Localloc 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 0F	localloc	Allocate space from the local heap.

The stack transitional behavior, in sequential order, is:

1. The number of bytes to be allocated is pushed onto the stack.

2. The number of bytes is popped from the stack; an amount of memory corresponding to the size is allocated from the local heap.

3. A pointer to the first byte of the allocated memory is pushed onto the stack.

The localloc instruction allocates size (type natural unsigned int) bytes from the local dynamic memory pool and returns the address (a transient pointer, type *) of the first allocated byte. The block of memory returned is initialized to 0 only if the initialize flag on the method is true. When the current method executes a Ret, the local memory pool is made available for reuse.

The resulting address is aligned so that any primitive data type can be stored there using the stind instructions (such as Stind_I4) and loaded using the ldind instructions (such as Ldind_I4).

The localloc instruction cannot occur within a filter, catch, finally, or fault block.

StackOverflowException is thrown if there is insufficient memory to service the request.

The following Emit method overload can use the localloc opcode:

• ILGenerator.Emit(OpCode)