Hi Pete, I'm not having much luck on Linux with multiple IUP threads. Under Windows it seems to be working fine with the testing I have done so far. Script BASIC uses the MT extension module to share static variables (lockable R/W) among threads. I can set a variable in one thread and check its status in another.
It's too early in my testing to say if I could use this in a production environment or not. John On Mon, 2017-02-20 at 15:01 +0000, Pete Lomax wrote: > What you have shown is two threads having entirely independent GUIs > with no overlap, either in terms of > responsibility, or time - it would be extremely difficult for a user > to click on two elements sufficiently > quickly for any un-thread-safe code in the back end to execute > simultaneously. If you want to test whether > something is thread-safe, you need to run things on a busy loop > basis, rather than user input. > > As a quick example, in iup_table.c you can find the iTableRemoveItem > routine which contains > > /* re-order the remaining items */ > for (i = itemIndex; i < entry->nextItemIndex-1; i++) > entry->items[i] = entry->items[i+1]; > > Were two threads to attempt that on the same entry simultaneously, > utter mayhem would ensue. Even worse > things might happen if two reallocs overlapped. I am not saying the > above is bad or wrong, just a cause > for concern in a multi-threaded sense, and there will be plenty of > similar examples in kernel32.dll and > gtk.so, etc. > > What would be more interesting to me is a background thread managing > to inform the main gui thread that > it has completed some requested task, in a non-polling manner, > especially on gtk. > > Pete > > > -------------------------------------------- > On Sat, 18/2/17, John Spikowski <supp...@scriptbasic.org> wrote: > > I don't think IUP would take much to support threading. > > > > > I thought I would share my success with multi-threading IUP > on > > > > > Windows > > > > > 10 with Script BASIC. I'm still early on with testing but so > > > > > far things look promising. > > ------------------------------------------------------------------- > ----------- > Check out the vibrant tech community on one of the world's most > engaging tech sites, SlashDot.org! http://sdm.link/slashdot > _______________________________________________ > Iup-users mailing list > Iup-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/iup-users ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Iup-users mailing list Iup-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/iup-users
