server-window.c - tmux - Rivoreo Source Code Repositories

 /* $Id: server-window.c,v 1.8 2009-11-08 22:59:53 tcunha Exp $ */

 /*
  * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */

 #include <sys/types.h>

 #include <event.h>
 #include <unistd.h>

 #include "tmux.h"

 int	server_window_backoff(struct window_pane *);
 int	server_window_check_bell(struct session *, struct window *);
 int	server_window_check_activity(struct session *, struct window *);
 int	server_window_check_content(
 	    struct session *, struct window *, struct window_pane *);
 void	server_window_check_alive(struct window *);

 /* Register windows for poll. */
 void
 server_window_prepare(void)
 {
 	struct window		*w;
 	struct window_pane	*wp;
 	u_int		 	 i;
 	int			 events;

 	for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
 		if ((w = ARRAY_ITEM(&windows, i)) == NULL)
 			continue;

 		TAILQ_FOREACH(wp, &w->panes, entry) {
 			if (wp->fd == -1)
 				continue;
 			events = 0;
 			if (!server_window_backoff(wp))
 				events |= EV_READ;
 			if (BUFFER_USED(wp->out) > 0)
 				events |= EV_WRITE;
 			event_del(&wp->event);
 			event_set(&wp->event,
 			    wp->fd, events, server_window_callback, wp);
 			event_add(&wp->event, NULL);
 		}
 	}
 }

 /* Check if this window should suspend reading. */
 int
 server_window_backoff(struct window_pane *wp)
 {
 	struct client	*c;
 	u_int		 i;

 	if (!window_pane_visible(wp))
 		return (0);

 	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
 		c = ARRAY_ITEM(&clients, i);
 		if (c == NULL || c->session == NULL)
 			continue;
 		if ((c->flags & (CLIENT_SUSPENDED|CLIENT_DEAD)) != 0)
 			continue;
 		if (c->session->curw->window != wp->window)
 			continue;

 		if (EVBUFFER_LENGTH(c->tty.event->output) > BACKOFF_THRESHOLD)
 			return (1);
 	}
 	return (0);
 }

 /* Process a single window pane event. */
 void
 server_window_callback(int fd, short events, void *data)
 {
 	struct window_pane	*wp = data;

 	if (wp->fd == -1)
 		return;

 	if (fd == wp->fd) {
 		if (buffer_poll(fd, events, wp->in, wp->out) != 0) {
 			close(wp->fd);
 			wp->fd = -1;
 		} else
 			window_pane_parse(wp);
 	}
 }

 /* Window functions that need to happen every loop. */
 void
 server_window_loop(void)
 {
 	struct window		*w;
 	struct window_pane	*wp;
 	struct session		*s;
 	u_int		 	 i, j;

 	for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
 		w = ARRAY_ITEM(&windows, i);
 		if (w == NULL)
 			continue;

 		for (j = 0; j < ARRAY_LENGTH(&sessions); j++) {
 			s = ARRAY_ITEM(&sessions, j);
 			if (s == NULL || !session_has(s, w))
 				continue;

 			if (server_window_check_bell(s, w) ||
 			    server_window_check_activity(s, w))
 				server_status_session(s);
 			TAILQ_FOREACH(wp, &w->panes, entry)
 				server_window_check_content(s, w, wp);
 		}
 		w->flags &= ~(WINDOW_BELL|WINDOW_ACTIVITY|WINDOW_CONTENT);

 		server_window_check_alive(w);
 	}

 	set_window_names();
 }

 /* Check for bell in window. */
 int
 server_window_check_bell(struct session *s, struct window *w)
 {
 	struct client	*c;
 	u_int		 i;
 	int		 action, visual;

 	if (!(w->flags & WINDOW_BELL))
 		return (0);

 	if (session_alert_has_window(s, w, WINDOW_BELL))
 		return (0);
 	session_alert_add(s, w, WINDOW_BELL);

 	action = options_get_number(&s->options, "bell-action");
 	switch (action) {
 	case BELL_ANY:
 		if (s->flags & SESSION_UNATTACHED)
 			break;
 		visual = options_get_number(&s->options, "visual-bell");
 		for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
 			c = ARRAY_ITEM(&clients, i);
 			if (c == NULL || c->session != s)
 				continue;
 			if (!visual) {
 				tty_putcode(&c->tty, TTYC_BEL);
 				continue;
 			}
  			if (c->session->curw->window == w) {
 				status_message_set(c, "Bell in current window");
 				continue;
 			}
 			status_message_set(c, "Bell in window %u",
 			    winlink_find_by_window(&s->windows, w)->idx);
 		}
 		break;
 	case BELL_CURRENT:
 		if (s->flags & SESSION_UNATTACHED)
 			break;
 		visual = options_get_number(&s->options, "visual-bell");
 		for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
 			c = ARRAY_ITEM(&clients, i);
 			if (c == NULL || c->session != s)
 				continue;
  			if (c->session->curw->window != w)
 				continue;
 			if (!visual) {
 				tty_putcode(&c->tty, TTYC_BEL);
 				continue;
 			}
 			status_message_set(c, "Bell in current window");
 		}
 		break;
 	}

 	return (1);
 }

 /* Check for activity in window. */
 int
 server_window_check_activity(struct session *s, struct window *w)
 {
 	struct client	*c;
 	u_int		 i;

 	if (!(w->flags & WINDOW_ACTIVITY))
 		return (0);
 	if (s->curw->window == w)
 		return (0);

  	if (!options_get_number(&w->options, "monitor-activity"))
 		return (0);

 	if (session_alert_has_window(s, w, WINDOW_ACTIVITY))
 		return (0);
 	session_alert_add(s, w, WINDOW_ACTIVITY);

 	if (s->flags & SESSION_UNATTACHED)
 		return (0);
  	if (options_get_number(&s->options, "visual-activity")) {
 		for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
 			c = ARRAY_ITEM(&clients, i);
 			if (c == NULL || c->session != s)
 				continue;
 			status_message_set(c, "Activity in window %u",
 			    winlink_find_by_window(&s->windows, w)->idx);
 		}
 	}

 	return (1);
 }

 /* Check for content change in window. */
 int
 server_window_check_content(
     struct session *s, struct window *w, struct window_pane *wp)
 {
 	struct client	*c;
 	u_int		 i;
 	char		*found, *ptr;

 	if (!(w->flags & WINDOW_ACTIVITY))	/* activity for new content */
 		return (0);
 	if (s->curw->window == w)
 		return (0);

 	ptr = options_get_string(&w->options, "monitor-content");
 	if (ptr == NULL || *ptr == '\0')
 		return (0);

 	if (session_alert_has_window(s, w, WINDOW_CONTENT))
 		return (0);

 	if ((found = window_pane_search(wp, ptr, NULL)) == NULL)
 		return (0);
     	xfree(found);

 	session_alert_add(s, w, WINDOW_CONTENT);
 	if (s->flags & SESSION_UNATTACHED)
 		return (0);
  	if (options_get_number(&s->options, "visual-content")) {
 		for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
 			c = ARRAY_ITEM(&clients, i);
 			if (c == NULL || c->session != s)
 				continue;
 			status_message_set(c, "Content in window %u",
 			    winlink_find_by_window(&s->windows, w)->idx);
 		}
 	}

 	return (1);
 }

 /* Check if window still exists. */
 void
 server_window_check_alive(struct window *w)
 {
 	struct window_pane	*wp, *wq;
 	struct options		*oo = &w->options;
 	struct session		*s;
 	struct winlink		*wl;
 	u_int		 	 i;
 	int		 	 destroyed;

 	destroyed = 1;

 	wp = TAILQ_FIRST(&w->panes);
 	while (wp != NULL) {
 		wq = TAILQ_NEXT(wp, entry);
 		/*
 		 * If the pane has died and the remain-on-exit flag is not set,
 		 * remove the pane; otherwise, if the flag is set, don't allow
 		 * the window to be destroyed (or it'll close when the last
 		 * pane dies).
 		 */
 		if (wp->fd == -1 && !options_get_number(oo, "remain-on-exit")) {
 			layout_close_pane(wp);
 			window_remove_pane(w, wp);
 			server_redraw_window(w);
 		} else
 			destroyed = 0;
 		wp = wq;
 	}

 	if (!destroyed)
 		return;

 	for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
 		s = ARRAY_ITEM(&sessions, i);
 		if (s == NULL)
 			continue;
 		if (!session_has(s, w))
 			continue;

 	restart:
 		/* Detach window and either redraw or kill clients. */
 		RB_FOREACH(wl, winlinks, &s->windows) {
 			if (wl->window != w)
 				continue;
 			if (session_detach(s, wl)) {
 				server_destroy_session_group(s);
 				break;
 			}
 			server_redraw_session(s);
 			server_status_session_group(s);
 			goto restart;
 		}
 	}

 	recalculate_sizes();
 }
	/* $Id: server-window.c,v 1.8 2009-11-08 22:59:53 tcunha Exp $ */

	/*
	* Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
	*
	* Permission to use, copy, modify, and distribute this software for any
	* purpose with or without fee is hereby granted, provided that the above
	* copyright notice and this permission notice appear in all copies.
	*
	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
	* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
	* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	*/

	#include <sys/types.h>

	#include <event.h>
	#include <unistd.h>

	#include "tmux.h"

	int server_window_backoff(struct window_pane *);
	int server_window_check_bell(struct session , struct window );
	int server_window_check_activity(struct session , struct window );
	int server_window_check_content(
	struct session , struct window , struct window_pane *);
	void server_window_check_alive(struct window *);

	/* Register windows for poll. */
	void
	server_window_prepare(void)
	{
	struct window *w;
	struct window_pane *wp;
	u_int i;
	int events;

	for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
	if ((w = ARRAY_ITEM(&windows, i)) == NULL)
	continue;

	TAILQ_FOREACH(wp, &w->panes, entry) {
	if (wp->fd == -1)
	continue;
	events = 0;
	if (!server_window_backoff(wp))
	events \|= EV_READ;
	if (BUFFER_USED(wp->out) > 0)
	events \|= EV_WRITE;
	event_del(&wp->event);
	event_set(&wp->event,
	wp->fd, events, server_window_callback, wp);
	event_add(&wp->event, NULL);
	}
	}
	}

	/* Check if this window should suspend reading. */
	int
	server_window_backoff(struct window_pane *wp)
	{
	struct client *c;
	u_int i;

	if (!window_pane_visible(wp))
	return (0);

	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
	c = ARRAY_ITEM(&clients, i);
	if (c == NULL \|\| c->session == NULL)
	continue;
	if ((c->flags & (CLIENT_SUSPENDED\|CLIENT_DEAD)) != 0)
	continue;
	if (c->session->curw->window != wp->window)
	continue;

	if (EVBUFFER_LENGTH(c->tty.event->output) > BACKOFF_THRESHOLD)
	return (1);
	}
	return (0);
	}

	/* Process a single window pane event. */
	void
	server_window_callback(int fd, short events, void *data)
	{
	struct window_pane *wp = data;

	if (wp->fd == -1)
	return;

	if (fd == wp->fd) {
	if (buffer_poll(fd, events, wp->in, wp->out) != 0) {
	close(wp->fd);
	wp->fd = -1;
	} else
	window_pane_parse(wp);
	}
	}

	/* Window functions that need to happen every loop. */
	void
	server_window_loop(void)
	{
	struct window *w;
	struct window_pane *wp;
	struct session *s;
	u_int i, j;

	for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
	w = ARRAY_ITEM(&windows, i);
	if (w == NULL)
	continue;

	for (j = 0; j < ARRAY_LENGTH(&sessions); j++) {
	s = ARRAY_ITEM(&sessions, j);
	if (s == NULL \|\| !session_has(s, w))
	continue;

	if (server_window_check_bell(s, w) \|\|
	server_window_check_activity(s, w))
	server_status_session(s);
	TAILQ_FOREACH(wp, &w->panes, entry)
	server_window_check_content(s, w, wp);
	}
	w->flags &= ~(WINDOW_BELL\|WINDOW_ACTIVITY\|WINDOW_CONTENT);

	server_window_check_alive(w);
	}

	set_window_names();
	}

	/* Check for bell in window. */
	int
	server_window_check_bell(struct session s, struct window w)
	{
	struct client *c;
	u_int i;
	int action, visual;

	if (!(w->flags & WINDOW_BELL))
	return (0);

	if (session_alert_has_window(s, w, WINDOW_BELL))
	return (0);
	session_alert_add(s, w, WINDOW_BELL);

	action = options_get_number(&s->options, "bell-action");
	switch (action) {
	case BELL_ANY:
	if (s->flags & SESSION_UNATTACHED)
	break;
	visual = options_get_number(&s->options, "visual-bell");
	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
	c = ARRAY_ITEM(&clients, i);
	if (c == NULL \|\| c->session != s)
	continue;
	if (!visual) {
	tty_putcode(&c->tty, TTYC_BEL);
	continue;
	}
	if (c->session->curw->window == w) {
	status_message_set(c, "Bell in current window");
	continue;
	}
	status_message_set(c, "Bell in window %u",
	winlink_find_by_window(&s->windows, w)->idx);
	}
	break;
	case BELL_CURRENT:
	if (s->flags & SESSION_UNATTACHED)
	break;
	visual = options_get_number(&s->options, "visual-bell");
	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
	c = ARRAY_ITEM(&clients, i);
	if (c == NULL \|\| c->session != s)
	continue;
	if (c->session->curw->window != w)
	continue;
	if (!visual) {
	tty_putcode(&c->tty, TTYC_BEL);
	continue;
	}
	status_message_set(c, "Bell in current window");
	}
	break;
	}

	return (1);
	}

	/* Check for activity in window. */
	int
	server_window_check_activity(struct session s, struct window w)
	{
	struct client *c;
	u_int i;

	if (!(w->flags & WINDOW_ACTIVITY))
	return (0);
	if (s->curw->window == w)
	return (0);

	if (!options_get_number(&w->options, "monitor-activity"))
	return (0);

	if (session_alert_has_window(s, w, WINDOW_ACTIVITY))
	return (0);
	session_alert_add(s, w, WINDOW_ACTIVITY);

	if (s->flags & SESSION_UNATTACHED)
	return (0);
	if (options_get_number(&s->options, "visual-activity")) {
	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
	c = ARRAY_ITEM(&clients, i);
	if (c == NULL \|\| c->session != s)
	continue;
	status_message_set(c, "Activity in window %u",
	winlink_find_by_window(&s->windows, w)->idx);
	}
	}

	return (1);
	}

	/* Check for content change in window. */
	int
	server_window_check_content(
	struct session s, struct window w, struct window_pane *wp)
	{
	struct client *c;
	u_int i;
	char found, ptr;

	if (!(w->flags & WINDOW_ACTIVITY)) /* activity for new content */
	return (0);
	if (s->curw->window == w)
	return (0);

	ptr = options_get_string(&w->options, "monitor-content");
	if (ptr == NULL \|\| *ptr == '\0')
	return (0);

	if (session_alert_has_window(s, w, WINDOW_CONTENT))
	return (0);

	if ((found = window_pane_search(wp, ptr, NULL)) == NULL)
	return (0);
	xfree(found);

	session_alert_add(s, w, WINDOW_CONTENT);
	if (s->flags & SESSION_UNATTACHED)
	return (0);
	if (options_get_number(&s->options, "visual-content")) {
	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
	c = ARRAY_ITEM(&clients, i);
	if (c == NULL \|\| c->session != s)
	continue;
	status_message_set(c, "Content in window %u",
	winlink_find_by_window(&s->windows, w)->idx);
	}
	}

	return (1);
	}

	/* Check if window still exists. */
	void
	server_window_check_alive(struct window *w)
	{
	struct window_pane wp, wq;
	struct options *oo = &w->options;
	struct session *s;
	struct winlink *wl;
	u_int i;
	int destroyed;

	destroyed = 1;

	wp = TAILQ_FIRST(&w->panes);
	while (wp != NULL) {
	wq = TAILQ_NEXT(wp, entry);
	/*
	* If the pane has died and the remain-on-exit flag is not set,
	* remove the pane; otherwise, if the flag is set, don't allow
	* the window to be destroyed (or it'll close when the last
	* pane dies).
	*/
	if (wp->fd == -1 && !options_get_number(oo, "remain-on-exit")) {
	layout_close_pane(wp);
	window_remove_pane(w, wp);
	server_redraw_window(w);
	} else
	destroyed = 0;
	wp = wq;
	}

	if (!destroyed)
	return;

	for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
	s = ARRAY_ITEM(&sessions, i);
	if (s == NULL)
	continue;
	if (!session_has(s, w))
	continue;

	restart:
	/* Detach window and either redraw or kill clients. */
	RB_FOREACH(wl, winlinks, &s->windows) {
	if (wl->window != w)
	continue;
	if (session_detach(s, wl)) {
	server_destroy_session_group(s);
	break;
	}
	server_redraw_session(s);
	server_status_session_group(s);
	goto restart;
	}
	}

	recalculate_sizes();
	}