MVS Jan 2005.p65 - CBT Tape

SYSLIN DD *
INCLUDE OBJECT(TESTATT) OBJ MODULE FOR TESTATT AFTER PRELINK
INCLUDE OBJECT(ATTACH) OBJ MODULE FOR ATTACH FUNCTION
INCLUDE OBJECT(DETACH) OBJ MODULE FOR DETACH FUNCTION
ENTRY CEESTART
NAME TESTATT(R)
INCLUDE OBJECT(ATTPGM1) OBJ MODULE FOR ATTPGM1 PROGRAM
NAME ATTPGM1(R)
Here is sample JCL for running a test:
//TESTATT EXEC PGM=TESTATT
//STEPLIB DD DSN=load.library,DISP=SHR
//SYSPRINT DD SYSOUT=*
CONCLUSION
Using the ATTACH()/DETACH() function pair in a C or C++
program environment provides much more control over a
multi-tasking environment than any of the inherent methods
provided for IBM C/C++ programs. If you have the need for
multi-tasking C/C++ applications, I’m confident that you will
see the benefit of using these functions.
ATTACH ASM
*---------------------------------------------------------------------*
* This program provides support for a C/C++ ATTACH() function. *
* It is designed to function similarly to the ATTACH macro for *
* Assembler programs. The ATTACH() function supports a basic *
* program ATTACH with parameter passing support. This version *
* of the function does not support the more esoteric ATTACH macro *
* parameters, but does provide for specifying the address of a DCB *
* for an open TASKLIB DD. As well, for tasks that need to be *
* waited on for completion, the ATTACH() function supports the *
* passing of an ECB area address and a return area for the TCB *
* address. *
* *
* For this program the following register usage is in effect: *
* *
* RØ - R1 : work registers, but generally available for use *
* by calls to system functions *
* R2 : used to save the incoming parameter address *
* R3 - R7 : work registers *
* R8 : used as base register for the required incoming *
* workarea *
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