I mean the same underlying file description of course, they are naturally different file descriptors.
On Wed, Nov 16, 2016 at 12:24:39AM +0000, Nicholas Marriott wrote: > stdin and stdout and stderr are probably all the same file descriptor. > > > > On Wed, Nov 16, 2016 at 05:53:52AM +0530, Prabhuram K wrote: > > Hi Nicholas, > > Thanks a lot for the patch. But it's not just STDIN. setting to blocking. > > Even STDOUT and STDERR also going back to blocking state. Do I need to > > add > > similar code for other fds? > > > > BTW: Your question on why reinitialize back, I am running with a real > > time > > system and I run my application multiple instances under tmux and > > sometimes simultaneously. So I don't want this to be done from my > > application rather from tmux itself. > > > > Thanks a lot for your help > > > > Regards, > > Prabhu > > > > On Nov 16, 2016 5:17 AM, "Nicholas Marriott" > > <[1][email protected]> wrote: > > > > You could try this: > > > > Index: client.c > > =================================================================== > > RCS file: /cvs/src/usr.bin/tmux/client.c,v > > retrieving revision 1.114 > > diff -u -p -r1.114 client.c > > --- client.c** ** 3 Oct 2016 22:52:11 -0000** ** ** **1.114 > > +++ client.c** ** 15 Nov 2016 23:47:22 -0000 > > @@ -38,6 +38,7 @@ static struct tmuxproc** ** ** ** *client_proc; > > **static struct tmuxpeer *client_peer; > > **static int** ** ** ** ** ** ** client_flags; > > **static struct event** ** **client_stdin; > > +static int** ** ** ** ** ** ** client_stdin_blocking; > > **static enum { > > ** ** ** ** CLIENT_EXIT_NONE, > > ** ** ** ** CLIENT_EXIT_DETACHED, > > @@ -306,10 +307,12 @@ client_main(struct event_base *base, int > > ** ** ** ** options_free(global_w_options); > > ** ** ** ** environ_free(global_environ); > > > > -** ** ** **/* Create stdin handler. */ > > -** ** ** **setblocking(STDIN_FILENO, 0); > > +** ** ** **/* Create stdin event. */ > > ** ** ** ** event_set(&client_stdin, STDIN_FILENO, EV_READ|EV_PERSIST, > > ** ** ** ** ** ** client_stdin_callback, NULL); > > +** ** ** **client_stdin_blocking = getblocking(STDIN_FILENO); > > + > > +** ** ** **/* Configure terminal for control mode. */ > > ** ** ** ** if (client_flags & CLIENT_CONTROLCONTROL) { > > ** ** ** ** ** ** ** ** if (tcgetattr(STDIN_FILENO, &saved_tio) != 0) > > ** ** ** ** ** ** ** ** ** ** ** ** fatal("tcgetattr failed"); > > @@ -375,7 +378,7 @@ client_main(struct event_base *base, int > > ** ** ** ** ** ** ** ** tcsetattr(STDOUT_FILENO, TCSAFLUSH, > > &saved_tio); > > ** ** ** ** } else if (client_exitreason != CLIENT_EXIT_NONE) > > ** ** ** ** ** ** ** ** fprintf(stderr, "%s\n", client_exit_message()); > > -** ** ** **setblocking(STDIN_FILENO, 1); > > +** ** ** **setblocking(STDIN_FILENO, client_stdin_blocking); > > ** ** ** ** return (client_exitval); > > **} > > > > @@ -585,6 +588,7 @@ client_dispatch_wait(struct imsg *imsg, > > ** ** ** ** ** ** ** ** if (datalen != 0) > > ** ** ** ** ** ** ** ** ** ** ** ** fatalx("bad MSG_STDIN size"); > > > > +** ** ** ** ** ** ** **setblocking(STDIN_FILENO, 0); > > ** ** ** ** ** ** ** ** event_add(&client_stdin, NULL); > > ** ** ** ** ** ** ** ** break; > > ** ** ** ** case MSG_STDOUT: > > Index: tmux.c > > =================================================================== > > RCS file: /cvs/src/usr.bin/tmux/tmux.c,v > > retrieving revision 1.172 > > diff -u -p -r1.172 tmux.c > > --- tmux.c** ** ** 11 Oct 2016 13:21:59 -0000** ** ** 1.172 > > +++ tmux.c** ** ** 15 Nov 2016 23:47:22 -0000 > > @@ -150,18 +150,31 @@ fail: > > ** ** ** ** return (NULL); > > **} > > > > +int > > +getblocking(int fd) > > +{ > > +** ** ** **int** ** **mode; > > + > > +** ** ** **if ((mode = fcntl(fd, F_GETFL)) == -1) > > +** ** ** ** ** ** ** **return (-1); > > +** ** ** **if (mode & O_NONBLOCK) > > +** ** ** ** ** ** ** **return (0); > > +** ** ** **return (1); > > +} > > + > > **void > > **setblocking(int fd, int state) > > **{ > > -** ** ** **int mode; > > +** ** ** **int** ** **mode, new_mode; > > > > -** ** ** **if ((mode = fcntl(fd, F_GETFL)) != -1) { > > -** ** ** ** ** ** ** **if (!state) > > -** ** ** ** ** ** ** ** ** ** ** **mode |= O_NONBLOCK; > > -** ** ** ** ** ** ** **else > > -** ** ** ** ** ** ** ** ** ** ** **mode &= ~O_NONBLOCK; > > +** ** ** **if (state == -1 || (mode = fcntl(fd, F_GETFL)) == -1) > > +** ** ** ** ** ** ** **return; > > +** ** ** **if (state) > > +** ** ** ** ** ** ** **new_mode = (mode | O_NONBLOCK); > > +** ** ** **else > > +** ** ** ** ** ** ** **new_mode = (mode & ~O_NONBLOCK); > > +** ** ** **if (new_mode != mode) > > ** ** ** ** ** ** ** ** fcntl(fd, F_SETFL, mode); > > -** ** ** **} > > **} > > > > **const char * > > Index: tmux.h > > =================================================================== > > RCS file: /cvs/src/usr.bin/tmux/tmux.h,v > > retrieving revision 1.677 > > diff -u -p -r1.677 tmux.h > > --- tmux.h** ** ** 15 Nov 2016 15:17:28 -0000** ** ** 1.677 > > +++ tmux.h** ** ** 15 Nov 2016 23:47:23 -0000 > > @@ -1105,6 +1105,7 @@ struct tty { > > ** ** ** ** struct tty_term *term; > > > > ** ** ** ** int** ** ** ** ** ** ** fd; > > +** ** ** **int** ** ** ** ** ** ** blocking; > > ** ** ** ** struct bufferevent *event; > > > > ** ** ** ** struct termios** **tio; > > @@ -1512,6 +1513,7 @@ extern struct environ** ** ***global_environ; > > **extern struct timeval** **start_time; > > **extern const char** ** ** *socket_path; > > **int** ** ** ** ** ** **areshell(const char *); > > +int** ** ** ** ** ** **getblocking(int); > > **void** ** ** ** ** ** setblocking(int, int); > > **const char** ** ***find_home(void); > > > > Index: tty.c > > =================================================================== > > RCS file: /cvs/src/usr.bin/tmux/tty.c,v > > retrieving revision 1.214 > > diff -u -p -r1.214 tty.c > > --- tty.c** ** ** **15 Nov 2016 15:17:28 -0000** ** ** 1.214 > > +++ tty.c** ** ** **15 Nov 2016 23:47:23 -0000 > > @@ -237,6 +237,7 @@ tty_init_termios(int fd, struct termios > > **void > > **tty_start_tty(struct tty *tty) > > **{ > > +** ** ** **tty->blocking = getblocking(tty->fd); > > ** ** ** ** tty_init_termios(tty->fd, &tty->tio, tty->event); > > > > ** ** ** ** tty_putcode(tty, TTYC_SMCUP); > > @@ -330,7 +331,7 @@ tty_stop_tty(struct tty *tty) > > ** ** ** ** ** ** ** ** tty_raw(tty, "\033[?69l"); /* DECLRMM */ > > ** ** ** ** tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP)); > > > > -** ** ** **setblocking(tty->fd, 1); > > +** ** ** **setblocking(tty->fd, tty->blocking); > > **} > > > > **void > > > > On Tue, Nov 15, 2016 at 11:33:02PM +0000, Nicholas Marriott wrote: > > > tmux sets stdin nonblocking then sets it blocking again on exit, we > > > could probably not do that unless we are going to use it, and restore > > > it only if it wasn't already nonblocking. But TBH does it matter that > > > much? Why not just set it nonblocking yourself after you run tmux? > > > > > > > > > On Tue, Nov 15, 2016 at 11:01:54PM +0530, Prabhuram K wrote: > > > >** ** Hi, > > > >** ** I have an application and run it under tmux. > > > >** ** The application sets** STDIN_FILENO, STDOUT_FILENO and > > STDERR_FILENO to > > > >** ** nonblocking using fcntl calls. > > > >** ** The application internally loads the tmux configuration file > > using system > > > >** ** command (tmux source-file xxx). Soon after this is executed > > inside from my > > > >** ** application, all the STDIN/STDOUT/STDERR fds sets back to > > blocking state. > > > >** ** Not sure what is the problem here. Why tmux always sets the > > fds > > to > > > >** ** blocking state. Is there a way to always set to non-blocking. > > > >** ** Any help is highly appreciated. > > > > > > > >** ** Thanks, > > > >** ** Prabhu > > > > > > > >** ** -- > > > >** ** You received this message because you are subscribed to the > > Google Groups > > > >** ** "tmux-users" group. > > > >** ** To unsubscribe from this group and stop receiving emails from > > it, send an > > > >** ** email to [1][2][email protected]. > > > >** ** To post to this group, send email to > > [2][3][email protected]. > > > >** ** For more options, visit > > [3][4]https://groups.google.com/d/optout. > > > > > > > > References > > > > > > > >** ** Visible links > > > >** ** 1. mailto:[5][email protected] > > > >** ** 2. mailto:[6][email protected] > > > >** ** 3. [7]https://groups.google.com/d/optout > > > > References > > > > Visible links > > 1. mailto:[email protected] > > 2. mailto:tmux-users%[email protected] > > 3. mailto:[email protected] > > 4. https://groups.google.com/d/optout > > 5. mailto:tmux-users%[email protected] > > 6. mailto:[email protected] > > 7. https://groups.google.com/d/optout -- You received this message because you are subscribed to the Google Groups "tmux-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
