basic.%wait
Waits for termination of child process.
Syntax
variable=%wait( &status)
Description
returns the exit code of the child process(es) created by the current process.
The 'status' is returned in the integer 'status', passed by its address.
Note that even though 'status' is an integer, only the lower 16 bits are updated by the system call. See the Unix Programmer's Reference Manual for more details on the format of the returned status.
Example
status=0
(void)%wait( &status )
high$status=int(status/256)
low$status=mod(status,256)
begin case
case low$status=255
* Child stopped due to a signal
case low$status=0
* Child stopped by calling exit()
case high$status=0
* Child was terminated due to a signal
end case
See Also
Command Name
Type
Description
basic.cfunc
Definition
can be called from a Pick/BASIC program or subroutine in AP/DOS and AP/Unix implementations using a syntax similar to that of normal C.
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