Inside Macintosh: Memory /

Chapter 2 - Memory Manager / Memory Manager Reference

Memory Manager Routines / Allocating Temporary Memory

TempMaxMem

To find the size of the largest contiguous block available for temporary allocation, use the TempMaxMem function.

FUNCTION TempMaxMem (VAR grow: Size): Size;

grow

On exit, this parameter always contains 0 after the function call because temporary memory does not come from the application's heap zone, and only that zone can grow. Ignore this parameter.

DESCRIPTION

The TempMaxMem function compacts the current heap zone and returns the size of the largest contiguous block available for temporary allocation.

ASSEMBLY-LANGUAGE INFORMATION

The trap macro and routine selector for TempMaxMem are

Trap macro	Selector
_OSDispatch	$0015

SPECIAL CONSIDERATIONS

Because TempMaxMem could move memory, you should not call it at interrupt time.