RtAllocateLocalMemoryEx

RtAllocateLocalMemoryEx allocates memory from the external memory allocation space (MSpace) of the current process. RtAllocateLocalMemoryEx allows you to allocate memory without zero-initializing the memory region.

Syntax

PVOID RtAllocateLocalMemoryEx(
    ULONG Size,
    ULONG Flags
);

Parameters

Size

An unsigned long specifying the number of bytes to allocate.

Flags

The memory allocation option. This parameter can be one or more of the following values:

Return Value

If the function succeeds, it returns a pointer to the memory. If the function fails, it returns a NULL pointer.

Remarks

RtAllocateLocalMemoryEx is a deterministic memory allocation call, provided the MSpace contains the requested memory.

Note: If the local pool is not created, or if the amount of free memory in the pool is not enough for the requested Size, calls to RtAllocateLocalMemory involve Windows interaction, resulting in loss of determinism. To avoid this, call RtQueryProcessMSpace first to make sure there is enough free memory in the MSpace.

See Also:

• RtAllocateLocalMemory
• RtQueryProcessMSpace
• RtExpandMSpace
• RtShrinkMSpace