On Tue, 10 Jul 2018 13:08:44 -0400, Thomas David Rivers wrote: >In a program, you can issue the BPX LOAD service to load a program >into memory... and similar to the LOAD macro, this returns the address >where the module was loaded, and the starting address. > >Now - is there any guarantee that if you then do a BPX FORK and then >a BPX EXEC to execute the module, that the module will be loaded at the same >address in the child? > exec() loads a new execution image, probably overlaying the image in the child of the code that did the fork(), andprobably *not* at the same address used by BPX LOAD in the parent process space. I think.
(But I don't think the child inherits the parent's TCB structure.) But since fork() completely replicates the parent process space, couldn't you just branch to the child's image of that module? -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
