As for as I know STDIN STDOUT STDERR fds are defined with 0, 1 and 2. I can try the patch anyway. Thanks again.
On Nov 16, 2016 5:54 AM, "Nicholas Marriott" <[email protected]> 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.
