Inside Macintosh: Memory /

Chapter 2 - Memory Manager / Memory Manager Reference

Memory Manager Routines / Manipulating Heap Zones

SetApplBase

The Process Manager calls the SetApplBase procedure when it starts up your application. You should never need to call it. It is documented for completeness only.

PROCEDURE SetApplBase (startPtr: Ptr);

startPtr

The starting address for the application heap zone to be initialized.

DESCRIPTION

The SetApplBase procedure sets the starting address of the application heap zone
for the application being initialized to the address designated by startPtr, and
then calls the InitApplZone procedure.

WARNING

Like InitApplZone, SetApplBase is a potentially dangerous operation, because the program's code itself normally resides in the application heap zone. To do so safely, you must make sure that the code containing the SetApplBase call is not in the application zone.

SPECIAL CONSIDERATIONS

You should not call SetApplBase at all, but, if you must, be sure not to call it at interrupt time because it affects memory.

ASSEMBLY-LANGUAGE INFORMATION

The registers on exit for SetApplBase are

Registers on exit
D0	Result code

RESULT CODES

noErr

0

No error