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1.9 ! nicm 1: /* $OpenBSD: server-window.c,v 1.8 2009/11/04 22:02:38 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/types.h>
20:
1.5 nicm 21: #include <event.h>
1.1 nicm 22: #include <unistd.h>
23:
24: #include "tmux.h"
25:
1.3 nicm 26: int server_window_backoff(struct window_pane *);
1.1 nicm 27: int server_window_check_bell(struct session *, struct window *);
28: int server_window_check_activity(struct session *, struct window *);
29: int server_window_check_content(
30: struct session *, struct window *, struct window_pane *);
31: void server_window_check_alive(struct window *);
1.2 nicm 32:
1.3 nicm 33: /* Check if this window should suspend reading. */
34: int
35: server_window_backoff(struct window_pane *wp)
36: {
37: struct client *c;
38: u_int i;
39:
40: if (!window_pane_visible(wp))
41: return (0);
42:
43: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
44: c = ARRAY_ITEM(&clients, i);
45: if (c == NULL || c->session == NULL)
1.4 nicm 46: continue;
47: if ((c->flags & (CLIENT_SUSPENDED|CLIENT_DEAD)) != 0)
1.3 nicm 48: continue;
49: if (c->session->curw->window != wp->window)
50: continue;
1.7 nicm 51:
52: if (EVBUFFER_LENGTH(c->tty.event->output) > BACKOFF_THRESHOLD)
1.3 nicm 53: return (1);
54: }
55: return (0);
1.2 nicm 56: }
1.1 nicm 57:
58: /* Window functions that need to happen every loop. */
59: void
60: server_window_loop(void)
61: {
62: struct window *w;
63: struct window_pane *wp;
64: struct session *s;
65: u_int i, j;
66:
67: for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
68: w = ARRAY_ITEM(&windows, i);
69: if (w == NULL)
70: continue;
1.9 ! nicm 71:
! 72: TAILQ_FOREACH(wp, &w->panes, entry) {
! 73: if (server_window_backoff(wp))
! 74: bufferevent_disable(wp->event, EV_READ);
! 75: else
! 76: bufferevent_enable(wp->event, EV_READ);
! 77: }
1.1 nicm 78:
79: for (j = 0; j < ARRAY_LENGTH(&sessions); j++) {
80: s = ARRAY_ITEM(&sessions, j);
81: if (s == NULL || !session_has(s, w))
82: continue;
83:
84: if (server_window_check_bell(s, w) ||
85: server_window_check_activity(s, w))
86: server_status_session(s);
87: TAILQ_FOREACH(wp, &w->panes, entry)
88: server_window_check_content(s, w, wp);
89: }
90: w->flags &= ~(WINDOW_BELL|WINDOW_ACTIVITY|WINDOW_CONTENT);
91:
92: server_window_check_alive(w);
93: }
94:
95: set_window_names();
96: }
97:
98: /* Check for bell in window. */
99: int
100: server_window_check_bell(struct session *s, struct window *w)
101: {
102: struct client *c;
103: u_int i;
104: int action, visual;
105:
106: if (!(w->flags & WINDOW_BELL))
107: return (0);
108:
109: if (session_alert_has_window(s, w, WINDOW_BELL))
110: return (0);
111: session_alert_add(s, w, WINDOW_BELL);
112:
113: action = options_get_number(&s->options, "bell-action");
114: switch (action) {
115: case BELL_ANY:
116: if (s->flags & SESSION_UNATTACHED)
117: break;
118: visual = options_get_number(&s->options, "visual-bell");
119: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
120: c = ARRAY_ITEM(&clients, i);
121: if (c == NULL || c->session != s)
122: continue;
123: if (!visual) {
124: tty_putcode(&c->tty, TTYC_BEL);
125: continue;
126: }
127: if (c->session->curw->window == w) {
128: status_message_set(c, "Bell in current window");
129: continue;
130: }
131: status_message_set(c, "Bell in window %u",
132: winlink_find_by_window(&s->windows, w)->idx);
133: }
134: break;
135: case BELL_CURRENT:
136: if (s->flags & SESSION_UNATTACHED)
137: break;
138: visual = options_get_number(&s->options, "visual-bell");
139: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
140: c = ARRAY_ITEM(&clients, i);
141: if (c == NULL || c->session != s)
142: continue;
143: if (c->session->curw->window != w)
144: continue;
145: if (!visual) {
146: tty_putcode(&c->tty, TTYC_BEL);
147: continue;
148: }
149: status_message_set(c, "Bell in current window");
150: }
151: break;
152: }
153:
154: return (1);
155: }
156:
157: /* Check for activity in window. */
158: int
159: server_window_check_activity(struct session *s, struct window *w)
160: {
161: struct client *c;
162: u_int i;
163:
164: if (!(w->flags & WINDOW_ACTIVITY))
165: return (0);
166: if (s->curw->window == w)
167: return (0);
168:
169: if (!options_get_number(&w->options, "monitor-activity"))
170: return (0);
171:
172: if (session_alert_has_window(s, w, WINDOW_ACTIVITY))
173: return (0);
174: session_alert_add(s, w, WINDOW_ACTIVITY);
175:
176: if (s->flags & SESSION_UNATTACHED)
177: return (0);
178: if (options_get_number(&s->options, "visual-activity")) {
179: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
180: c = ARRAY_ITEM(&clients, i);
181: if (c == NULL || c->session != s)
182: continue;
183: status_message_set(c, "Activity in window %u",
184: winlink_find_by_window(&s->windows, w)->idx);
185: }
186: }
187:
188: return (1);
189: }
190:
191: /* Check for content change in window. */
192: int
193: server_window_check_content(
194: struct session *s, struct window *w, struct window_pane *wp)
195: {
196: struct client *c;
197: u_int i;
198: char *found, *ptr;
199:
200: if (!(w->flags & WINDOW_ACTIVITY)) /* activity for new content */
201: return (0);
202: if (s->curw->window == w)
203: return (0);
204:
205: ptr = options_get_string(&w->options, "monitor-content");
206: if (ptr == NULL || *ptr == '\0')
207: return (0);
208:
209: if (session_alert_has_window(s, w, WINDOW_CONTENT))
210: return (0);
211:
212: if ((found = window_pane_search(wp, ptr, NULL)) == NULL)
213: return (0);
214: xfree(found);
215:
216: session_alert_add(s, w, WINDOW_CONTENT);
217: if (s->flags & SESSION_UNATTACHED)
218: return (0);
219: if (options_get_number(&s->options, "visual-content")) {
220: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
221: c = ARRAY_ITEM(&clients, i);
222: if (c == NULL || c->session != s)
223: continue;
224: status_message_set(c, "Content in window %u",
225: winlink_find_by_window(&s->windows, w)->idx);
226: }
227: }
228:
229: return (1);
230: }
231:
232: /* Check if window still exists. */
233: void
234: server_window_check_alive(struct window *w)
235: {
236: struct window_pane *wp, *wq;
237: struct options *oo = &w->options;
238: struct session *s;
239: struct winlink *wl;
240: u_int i;
241: int destroyed;
242:
243: destroyed = 1;
244:
245: wp = TAILQ_FIRST(&w->panes);
246: while (wp != NULL) {
247: wq = TAILQ_NEXT(wp, entry);
248: /*
249: * If the pane has died and the remain-on-exit flag is not set,
250: * remove the pane; otherwise, if the flag is set, don't allow
251: * the window to be destroyed (or it'll close when the last
252: * pane dies).
253: */
254: if (wp->fd == -1 && !options_get_number(oo, "remain-on-exit")) {
255: layout_close_pane(wp);
256: window_remove_pane(w, wp);
257: server_redraw_window(w);
258: } else
259: destroyed = 0;
260: wp = wq;
261: }
262:
263: if (!destroyed)
264: return;
265:
266: for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
267: s = ARRAY_ITEM(&sessions, i);
268: if (s == NULL)
269: continue;
270: if (!session_has(s, w))
271: continue;
272:
273: restart:
274: /* Detach window and either redraw or kill clients. */
275: RB_FOREACH(wl, winlinks, &s->windows) {
276: if (wl->window != w)
277: continue;
278: if (session_detach(s, wl)) {
279: server_destroy_session_group(s);
280: break;
281: }
282: server_redraw_session(s);
283: server_status_session_group(s);
284: goto restart;
285: }
286: }
287:
288: recalculate_sizes();
289: }