> Can you provide some type of call hierarchy diagram (labeling the various > levels with Language/Run time environment used) so we can see how program > flow from top to bottom? > Thanks.
C main: Declare a suitable C variable, say a char[8] Call ISPLINK to VDEFINE the variable to ISPF setting type as USER and the user exit entry point to the address of a function declared extern "OS" (#pragma linkage(,OS)) Call ISPLINK to do, say, TBCREATE then a TBADD. The act of doing a TBADD will require the string value of the VDEFINEd variable, hence call the user exit. In the user exit I want to call a C function to be run in the same LE environment as my main and the C function is to do the formatting of the variable (it has to access a body of code that provides the formatting services I want access to). Specifically I want the same "static" memory area so that global variables have the same values as they did in the C main. The user exit gets called on a separate subtask (http://www-01.ibm.com/support/docview.wss?uid=swg21023983 ), so the issue is to "connect" up the subtask to the original LE environment. The C main is to be run either from TSO environment "interactively" or from batch using the ISPSTART PGM= method. Logically, my C main calls ISPF, and ISPF calls my user exit in the same logical "thread". The C main calls ISPF and blocks until ISPF returns. During that period ISPF may then call the user exit. Since the C main has blocked there is should be no issue running the user exit within the same LE environment as if it where run on the same physical thread/task as a nested function call. I want it to appear as if C main -> ISPF -> user exit as nested function calls. __________ Information from ESET NOD32 Antivirus, version of virus signature database 4759 (20100110) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
