Thank you, Marc, for your input. This is my first time using such a library, so I guess I don't get your point.
My main program should only receive a list of relevant events from inotify and process them through a callback function of the main program. I want libev++ to watch a directory of files and call the callback function as soon as inotify gives at least one relevant event. And I don't want libev++ to block my main program, that's why I tried to use it with NOWAIT. Am I doing it totally wrong? Is libev++ a right tool for the task? If I add ev_run(EV_A_ 0); to engage_watcher() I get use of undeclared identifier 'loop'. If I also add ev::default_loop loop; then I can build and run the program but it gets blocked until I change a file in the directory being watched. And even after that the program's window doesn't show up. If I replace 0 with EVRUN_NOWAIT then the window shows up but io_callback() is never invoked again. How can I get it working? On Mon, Oct 12, 2020 at 2:51 PM Marc Lehmann <schm...@schmorp.de> wrote: > On Sun, Oct 11, 2020 at 04:51:09PM +0500, rustahm <rust...@gmail.com> > wrote: > > Please find attached the source code. Could anyone explain why the > callback > > is never invoked when I do change the files? > > You probably never call ev's mainloop: you only call ev::run once with > NOWAIT, so unless any change happens before that call, libev code is never > invoked and therefore does not have a chance of calling your callback. > > You would need to put something like ev_run (EV_A_ 0) into your main > program > (which you haven't shown). > > Also, ev::get_default_loop() (and .run) is internal undocumented > functionality which you should not call if you want your program to > continue to work with future versions. > > -- > The choice of a Deliantra, the free code+content > MORPG > -----==- _GNU_ http://www.deliantra.net > ----==-- _ generation > ---==---(_)__ __ ____ __ Marc Lehmann > --==---/ / _ \/ // /\ \/ / schm...@schmorp.de > -=====/_/_//_/\_,_/ /_/\_\ >
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