Inside Macintosh: Memory /

Chapter 2 - Memory Manager / Memory Manager Reference

Memory Manager Routines / Grow-Zone Operations

GZSaveHnd

Your grow-zone function must call the GZSaveHnd function to obtain a handle to a protected relocatable block that the grow-zone function must not move, purge, or delete.

FUNCTION GZSaveHnd: Handle;

DESCRIPTION

The GZSaveHnd function returns a handle to a relocatable block that the grow-zone function must not move, purge, or delete. It returns NIL if there is no such block.
The returned handle is a handle to the block of memory being manipulated by the Memory Manager at the time that the grow-zone function is called.

ASSEMBLY-LANGUAGE INFORMATION

You can find the same handle in the global variable GZRootHnd.