Legacy Document

Inside Macintosh: Processes

Chapter 2 - Process Manager / Process Manager Reference

Routines / Getting Process Information

GetCurrentProcess

Use the GetCurrentProcess function to get information about the current process,
if any.

FUNCTION GetCurrentProcess (VAR PSN: ProcessSerialNumber): OSErr;

PSN

On output, the process serial number of the current process.

DESCRIPTION

The GetCurrentProcess function returns, in the PSN parameter, the process serial number of the process that is currently running, that is, the one currently accessing the CPU. This is the application associated with the CurrentA5 global variable. This application can be running in either the foreground or the background.

Applications can use this function to find their own process serial number. Drivers can use this function to find the process serial number of the current process. You can use the returned process serial number in other Process Manager routines.

ASSEMBLY-LANGUAGE INFORMATION

The trap macro and routine selector for the GetCurrentProcess function are

Trap macro	Selector
_OSDispatch	$0037

RESULT CODE

noErr

0

No error