builtin function ALLOCATE vs CEEGTST program

shashi1026 · New User Joined: 18 Nov 2008 Posts: 3 Location: Chennai

Hi

could you please tell the differences between the PL/1 builtin function ALLOCATE and the routine CEEGTST used for dynamic memory allocation.

Thanks.
Shashi

enrico-sorichetti · Posted: Sat Apr 25, 2009 12:40 pm

reading the manual and considering the parameters used for the invocation
should have already told You the difference...
have You looked at the manual yet ?

1) from a formal point of view
ALLOCATE is a PL/I statement ( the form should clarify what I mean )
GEEGTST is an external subroutin/function to get a generic chunk of storage from he heap

given point 1

DCL something CONTROLLED
ALLOCATE something
PL1 takes care of everything

CEEGTST ( see the proper parameters )
You MUST care of everything
- pointers and all the stuff

shashi1026 · New User Joined: 18 Nov 2008 Posts: 3 Location: Chennai

Hi Enrico Sorichetti ,

Thanks for the reply.

I think my question was too generic.

I would like to know whether both ALLOCATE & CEEGTST will do same kind of operation ie. allocating a block of memory from heap.

Could you please tell if a program MAIN calls a service program ABC dynamically, and in ABC we are allocating a block of memory and populates it and returning the pointer to the allocated memory to the MAIN program. Then whether the memory block be available in MAIN program or will it be lost as ABC is called dynamically ?

Will allocating memory block using ALLOCATE , behave the same as allocating it using CEEGTST ?

enrico-sorichetti · Posted: Sat Apr 25, 2009 10:56 pm

looks like You didn' t read carefully my answer,
and You did not look at the manual

You had another topic on the same subject and You got good answers
why keep asking ???