Annotation of src/usr.bin/tmux/session.c, Revision 1.53
1.53 ! nicm 1: /* $OpenBSD: session.c,v 1.52 2015/08/28 13:12:20 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2007 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: #include <sys/time.h>
21:
1.6 nicm 22: #include <paths.h>
1.1 nicm 23: #include <string.h>
24: #include <stdlib.h>
25: #include <unistd.h>
1.10 nicm 26: #include <time.h>
1.1 nicm 27:
28: #include "tmux.h"
29:
30: struct sessions sessions;
1.38 nicm 31: u_int next_session_id;
1.11 nicm 32: struct session_groups session_groups;
1.1 nicm 33:
1.50 nicm 34: void session_free(int, short, void *);
35:
1.52 nicm 36: void session_lock_timer(int, short, void *);
37:
1.18 nicm 38: struct winlink *session_next_alert(struct winlink *);
39: struct winlink *session_previous_alert(struct winlink *);
1.21 nicm 40:
1.25 nicm 41: RB_GENERATE(sessions, session, entry, session_cmp);
42:
43: int
44: session_cmp(struct session *s1, struct session *s2)
45: {
46: return (strcmp(s1->name, s2->name));
47: }
48:
1.21 nicm 49: /*
50: * Find if session is still alive. This is true if it is still on the global
51: * sessions list.
52: */
53: int
54: session_alive(struct session *s)
55: {
1.25 nicm 56: struct session *s_loop;
1.21 nicm 57:
1.25 nicm 58: RB_FOREACH(s_loop, sessions, &sessions) {
59: if (s_loop == s)
60: return (1);
61: }
62: return (0);
1.21 nicm 63: }
1.1 nicm 64:
65: /* Find session by name. */
66: struct session *
67: session_find(const char *name)
68: {
1.25 nicm 69: struct session s;
70:
71: s.name = (char *) name;
72: return (RB_FIND(sessions, &sessions, &s));
1.48 nicm 73: }
74:
75: /* Find session by id parsed from a string. */
76: struct session *
77: session_find_by_id_str(const char *s)
78: {
79: const char *errstr;
80: u_int id;
81:
82: if (*s != '$')
83: return (NULL);
84:
85: id = strtonum(s + 1, 0, UINT_MAX, &errstr);
86: if (errstr != NULL)
87: return (NULL);
88: return (session_find_by_id(id));
1.25 nicm 89: }
90:
1.38 nicm 91: /* Find session by id. */
1.25 nicm 92: struct session *
1.38 nicm 93: session_find_by_id(u_int id)
1.25 nicm 94: {
1.1 nicm 95: struct session *s;
96:
1.25 nicm 97: RB_FOREACH(s, sessions, &sessions) {
1.38 nicm 98: if (s->id == id)
1.1 nicm 99: return (s);
100: }
101: return (NULL);
102: }
103:
104: /* Create a new session. */
105: struct session *
1.44 nicm 106: session_create(const char *name, int argc, char **argv, const char *path,
107: int cwd, struct environ *env, struct termios *tio, int idx, u_int sx,
108: u_int sy, char **cause)
1.1 nicm 109: {
110: struct session *s;
1.44 nicm 111: struct winlink *wl;
1.1 nicm 112:
1.52 nicm 113: s = xcalloc(1, sizeof *s);
1.50 nicm 114: s->references = 1;
1.1 nicm 115: s->flags = 0;
1.7 nicm 116:
1.41 nicm 117: s->cwd = dup(cwd);
1.19 nicm 118:
1.1 nicm 119: s->curw = NULL;
1.11 nicm 120: TAILQ_INIT(&s->lastw);
1.1 nicm 121: RB_INIT(&s->windows);
1.7 nicm 122:
1.2 nicm 123: options_init(&s->options, &global_s_options);
1.3 nicm 124: environ_init(&s->environ);
125: if (env != NULL)
126: environ_copy(env, &s->environ);
1.8 nicm 127:
128: s->tio = NULL;
129: if (tio != NULL) {
130: s->tio = xmalloc(sizeof *s->tio);
131: memcpy(s->tio, tio, sizeof *s->tio);
132: }
1.1 nicm 133:
1.51 nicm 134: if (gettimeofday(&s->creation_time, NULL) != 0)
135: fatal("gettimeofday failed");
136: session_update_activity(s, &s->creation_time);
137:
1.1 nicm 138: s->sx = sx;
139: s->sy = sy;
140:
1.32 nicm 141: if (name != NULL) {
1.1 nicm 142: s->name = xstrdup(name);
1.38 nicm 143: s->id = next_session_id++;
1.32 nicm 144: } else {
145: s->name = NULL;
146: do {
1.38 nicm 147: s->id = next_session_id++;
1.46 nicm 148: free(s->name);
1.38 nicm 149: xasprintf(&s->name, "%u", s->id);
1.32 nicm 150: } while (RB_FIND(sessions, &sessions, s) != NULL);
151: }
1.25 nicm 152: RB_INSERT(sessions, &sessions, s);
1.15 nicm 153:
1.52 nicm 154: if (gettimeofday(&s->creation_time, NULL) != 0)
155: fatal("gettimeofday failed");
156: session_update_activity(s, &s->creation_time);
157:
1.44 nicm 158: if (argc >= 0) {
159: wl = session_new(s, NULL, argc, argv, path, cwd, idx, cause);
160: if (wl == NULL) {
1.11 nicm 161: session_destroy(s);
162: return (NULL);
163: }
164: session_select(s, RB_ROOT(&s->windows)->idx);
1.1 nicm 165: }
166:
167: log_debug("session %s created", s->name);
1.33 nicm 168: notify_session_created(s);
1.1 nicm 169:
170: return (s);
171: }
172:
1.50 nicm 173: /* Remove a reference from a session. */
174: void
175: session_unref(struct session *s)
176: {
177: log_debug("session %s has %d references", s->name, s->references);
178:
179: s->references--;
180: if (s->references == 0)
181: event_once(-1, EV_TIMEOUT, session_free, s, NULL);
182: }
183:
184: /* Free session. */
185: void
186: session_free(unused int fd, unused short events, void *arg)
187: {
188: struct session *s = arg;
189:
190: log_debug("sesson %s freed (%d references)", s->name, s->references);
191:
1.53 ! nicm 192: if (s->references == 0) {
! 193: free(s->name);
1.50 nicm 194: free(s);
1.53 ! nicm 195: }
1.50 nicm 196: }
197:
1.1 nicm 198: /* Destroy a session. */
199: void
200: session_destroy(struct session *s)
201: {
1.33 nicm 202: struct winlink *wl;
1.39 nicm 203:
1.1 nicm 204: log_debug("session %s destroyed", s->name);
205:
1.25 nicm 206: RB_REMOVE(sessions, &sessions, s);
1.33 nicm 207: notify_session_closed(s);
1.1 nicm 208:
1.36 nicm 209: free(s->tio);
1.8 nicm 210:
1.52 nicm 211: if (event_initialized(&s->lock_timer))
212: event_del(&s->lock_timer);
213:
1.11 nicm 214: session_group_remove(s);
1.3 nicm 215: environ_free(&s->environ);
1.1 nicm 216: options_free(&s->options);
217:
1.11 nicm 218: while (!TAILQ_EMPTY(&s->lastw))
219: winlink_stack_remove(&s->lastw, TAILQ_FIRST(&s->lastw));
1.33 nicm 220: while (!RB_EMPTY(&s->windows)) {
221: wl = RB_ROOT(&s->windows);
222: notify_window_unlinked(s, wl->window);
223: winlink_remove(&s->windows, wl);
224: }
1.1 nicm 225:
1.41 nicm 226: close(s->cwd);
1.15 nicm 227:
1.50 nicm 228: session_unref(s);
1.31 nicm 229: }
230:
1.42 nicm 231: /* Check a session name is valid: not empty and no colons or periods. */
1.31 nicm 232: int
233: session_check_name(const char *name)
234: {
1.42 nicm 235: return (*name != '\0' && name[strcspn(name, ":.")] == '\0');
1.27 nicm 236: }
237:
1.52 nicm 238: /* Lock session if it has timed out. */
239: void
240: session_lock_timer(unused int fd, unused short events, void *arg)
241: {
242: struct session *s = arg;
243:
244: if (s->flags & SESSION_UNATTACHED)
245: return;
246:
247: log_debug("session %s locked, activity time %lld", s->name,
248: (long long)s->activity_time.tv_sec);
249:
250: server_lock_session(s);
251: recalculate_sizes();
252: }
253:
1.51 nicm 254: /* Update activity time. */
1.27 nicm 255: void
1.51 nicm 256: session_update_activity(struct session *s, struct timeval *from)
1.27 nicm 257: {
1.51 nicm 258: struct timeval *last = &s->last_activity_time;
1.52 nicm 259: struct timeval tv;
1.51 nicm 260:
261: memcpy(last, &s->activity_time, sizeof *last);
262: if (from == NULL)
263: gettimeofday(&s->activity_time, NULL);
264: else
265: memcpy(&s->activity_time, from, sizeof s->activity_time);
1.52 nicm 266:
267: if (evtimer_initialized(&s->lock_timer))
268: evtimer_del(&s->lock_timer);
269: else
270: evtimer_set(&s->lock_timer, session_lock_timer, s);
271:
272: if (~s->flags & SESSION_UNATTACHED) {
273: timerclear(&tv);
274: tv.tv_sec = options_get_number(&s->options, "lock-after-time");
275: if (tv.tv_sec != 0)
276: evtimer_add(&s->lock_timer, &tv);
277: }
1.20 nicm 278: }
279:
280: /* Find the next usable session. */
281: struct session *
282: session_next_session(struct session *s)
283: {
284: struct session *s2;
285:
1.25 nicm 286: if (RB_EMPTY(&sessions) || !session_alive(s))
1.20 nicm 287: return (NULL);
288:
1.29 nicm 289: s2 = RB_NEXT(sessions, &sessions, s);
1.28 nicm 290: if (s2 == NULL)
291: s2 = RB_MIN(sessions, &sessions);
1.25 nicm 292: if (s2 == s)
293: return (NULL);
1.20 nicm 294: return (s2);
295: }
296:
297: /* Find the previous usable session. */
298: struct session *
299: session_previous_session(struct session *s)
300: {
301: struct session *s2;
302:
1.25 nicm 303: if (RB_EMPTY(&sessions) || !session_alive(s))
1.20 nicm 304: return (NULL);
305:
1.29 nicm 306: s2 = RB_PREV(sessions, &sessions, s);
1.28 nicm 307: if (s2 == NULL)
308: s2 = RB_MAX(sessions, &sessions);
1.25 nicm 309: if (s2 == s)
310: return (NULL);
1.20 nicm 311: return (s2);
1.1 nicm 312: }
313:
314: /* Create a new window on a session. */
315: struct winlink *
1.44 nicm 316: session_new(struct session *s, const char *name, int argc, char **argv,
1.43 nicm 317: const char *path, int cwd, int idx, char **cause)
1.1 nicm 318: {
319: struct window *w;
1.30 nicm 320: struct winlink *wl;
1.3 nicm 321: struct environ env;
1.6 nicm 322: const char *shell;
1.1 nicm 323: u_int hlimit;
324:
1.30 nicm 325: if ((wl = winlink_add(&s->windows, idx)) == NULL) {
326: xasprintf(cause, "index in use: %d", idx);
327: return (NULL);
328: }
329:
1.3 nicm 330: environ_init(&env);
331: environ_copy(&global_environ, &env);
332: environ_copy(&s->environ, &env);
333: server_fill_environ(s, &env);
1.1 nicm 334:
1.6 nicm 335: shell = options_get_string(&s->options, "default-shell");
336: if (*shell == '\0' || areshell(shell))
337: shell = _PATH_BSHELL;
338:
1.1 nicm 339: hlimit = options_get_number(&s->options, "history-limit");
1.44 nicm 340: w = window_create(name, argc, argv, path, shell, cwd, &env, s->tio,
341: s->sx, s->sy, hlimit, cause);
1.3 nicm 342: if (w == NULL) {
1.30 nicm 343: winlink_remove(&s->windows, wl);
1.3 nicm 344: environ_free(&env);
1.1 nicm 345: return (NULL);
1.3 nicm 346: }
1.30 nicm 347: winlink_set_window(wl, w);
1.33 nicm 348: notify_window_linked(s, w);
1.3 nicm 349: environ_free(&env);
1.1 nicm 350:
351: if (options_get_number(&s->options, "set-remain-on-exit"))
352: options_set_number(&w->options, "remain-on-exit", 1);
353:
1.30 nicm 354: session_group_synchronize_from(s);
355: return (wl);
1.1 nicm 356: }
357:
358: /* Attach a window to a session. */
359: struct winlink *
360: session_attach(struct session *s, struct window *w, int idx, char **cause)
361: {
362: struct winlink *wl;
363:
1.30 nicm 364: if ((wl = winlink_add(&s->windows, idx)) == NULL) {
1.1 nicm 365: xasprintf(cause, "index in use: %d", idx);
1.30 nicm 366: return (NULL);
367: }
368: winlink_set_window(wl, w);
1.33 nicm 369: notify_window_linked(s, w);
1.30 nicm 370:
1.11 nicm 371: session_group_synchronize_from(s);
1.1 nicm 372: return (wl);
373: }
374:
375: /* Detach a window from a session. */
376: int
377: session_detach(struct session *s, struct winlink *wl)
378: {
379: if (s->curw == wl &&
380: session_last(s) != 0 && session_previous(s, 0) != 0)
381: session_next(s, 0);
382:
1.18 nicm 383: wl->flags &= ~WINLINK_ALERTFLAGS;
1.33 nicm 384: notify_window_unlinked(s, wl->window);
1.1 nicm 385: winlink_stack_remove(&s->lastw, wl);
386: winlink_remove(&s->windows, wl);
1.11 nicm 387: session_group_synchronize_from(s);
1.1 nicm 388: if (RB_EMPTY(&s->windows)) {
389: session_destroy(s);
390: return (1);
391: }
392: return (0);
393: }
394:
395: /* Return if session has window. */
1.47 nicm 396: int
1.1 nicm 397: session_has(struct session *s, struct window *w)
398: {
399: struct winlink *wl;
400:
401: RB_FOREACH(wl, winlinks, &s->windows) {
402: if (wl->window == w)
1.47 nicm 403: return (1);
1.1 nicm 404: }
1.47 nicm 405: return (0);
1.49 nicm 406: }
407:
408: /*
409: * Return 1 if a window is linked outside this session (not including session
410: * groups). The window must be in this session!
411: */
412: int
413: session_is_linked(struct session *s, struct window *w)
414: {
415: struct session_group *sg;
416:
417: if ((sg = session_group_find(s)) != NULL)
418: return (w->references != session_group_count(sg));
419: return (w->references != 1);
1.1 nicm 420: }
421:
422: struct winlink *
1.18 nicm 423: session_next_alert(struct winlink *wl)
1.1 nicm 424: {
425: while (wl != NULL) {
1.18 nicm 426: if (wl->flags & WINLINK_ALERTFLAGS)
1.1 nicm 427: break;
1.14 nicm 428: wl = winlink_next(wl);
1.1 nicm 429: }
430: return (wl);
431: }
432:
433: /* Move session to next window. */
434: int
1.17 nicm 435: session_next(struct session *s, int alert)
1.1 nicm 436: {
437: struct winlink *wl;
438:
439: if (s->curw == NULL)
440: return (-1);
441:
1.14 nicm 442: wl = winlink_next(s->curw);
1.17 nicm 443: if (alert)
1.18 nicm 444: wl = session_next_alert(wl);
1.1 nicm 445: if (wl == NULL) {
446: wl = RB_MIN(winlinks, &s->windows);
1.18 nicm 447: if (alert && ((wl = session_next_alert(wl)) == NULL))
1.1 nicm 448: return (-1);
449: }
1.37 nicm 450: return (session_set_current(s, wl));
1.1 nicm 451: }
452:
453: struct winlink *
1.18 nicm 454: session_previous_alert(struct winlink *wl)
1.1 nicm 455: {
456: while (wl != NULL) {
1.18 nicm 457: if (wl->flags & WINLINK_ALERTFLAGS)
1.1 nicm 458: break;
1.14 nicm 459: wl = winlink_previous(wl);
1.1 nicm 460: }
461: return (wl);
462: }
463:
464: /* Move session to previous window. */
465: int
1.17 nicm 466: session_previous(struct session *s, int alert)
1.1 nicm 467: {
468: struct winlink *wl;
469:
470: if (s->curw == NULL)
471: return (-1);
472:
1.14 nicm 473: wl = winlink_previous(s->curw);
1.17 nicm 474: if (alert)
1.18 nicm 475: wl = session_previous_alert(wl);
1.1 nicm 476: if (wl == NULL) {
477: wl = RB_MAX(winlinks, &s->windows);
1.18 nicm 478: if (alert && (wl = session_previous_alert(wl)) == NULL)
1.1 nicm 479: return (-1);
480: }
1.37 nicm 481: return (session_set_current(s, wl));
1.1 nicm 482: }
483:
484: /* Move session to specific window. */
485: int
486: session_select(struct session *s, int idx)
487: {
488: struct winlink *wl;
489:
490: wl = winlink_find_by_index(&s->windows, idx);
1.37 nicm 491: return (session_set_current(s, wl));
1.1 nicm 492: }
493:
494: /* Move session to last used window. */
495: int
496: session_last(struct session *s)
497: {
498: struct winlink *wl;
499:
1.11 nicm 500: wl = TAILQ_FIRST(&s->lastw);
1.37 nicm 501: if (wl == NULL)
502: return (-1);
503: if (wl == s->curw)
504: return (1);
505:
506: return (session_set_current(s, wl));
507: }
508:
509: /* Set current winlink to wl .*/
510: int
511: session_set_current(struct session *s, struct winlink *wl)
512: {
1.1 nicm 513: if (wl == NULL)
514: return (-1);
515: if (wl == s->curw)
516: return (1);
517:
518: winlink_stack_remove(&s->lastw, wl);
519: winlink_stack_push(&s->lastw, s->curw);
520: s->curw = wl;
1.35 nicm 521: winlink_clear_flags(wl);
1.1 nicm 522: return (0);
1.11 nicm 523: }
524:
525: /* Find the session group containing a session. */
526: struct session_group *
527: session_group_find(struct session *target)
528: {
529: struct session_group *sg;
530: struct session *s;
531:
532: TAILQ_FOREACH(sg, &session_groups, entry) {
533: TAILQ_FOREACH(s, &sg->sessions, gentry) {
534: if (s == target)
535: return (sg);
536: }
537: }
538: return (NULL);
539: }
540:
541: /* Find session group index. */
542: u_int
543: session_group_index(struct session_group *sg)
544: {
545: struct session_group *sg2;
546: u_int i;
547:
548: i = 0;
549: TAILQ_FOREACH(sg2, &session_groups, entry) {
550: if (sg == sg2)
551: return (i);
552: i++;
553: }
554:
555: fatalx("session group not found");
556: }
557:
558: /*
559: * Add a session to the session group containing target, creating it if
1.15 nicm 560: * necessary.
1.11 nicm 561: */
562: void
563: session_group_add(struct session *target, struct session *s)
564: {
565: struct session_group *sg;
566:
567: if ((sg = session_group_find(target)) == NULL) {
568: sg = xmalloc(sizeof *sg);
569: TAILQ_INSERT_TAIL(&session_groups, sg, entry);
570: TAILQ_INIT(&sg->sessions);
571: TAILQ_INSERT_TAIL(&sg->sessions, target, gentry);
572: }
573: TAILQ_INSERT_TAIL(&sg->sessions, s, gentry);
574: }
575:
576: /* Remove a session from its group and destroy the group if empty. */
577: void
578: session_group_remove(struct session *s)
579: {
580: struct session_group *sg;
581:
582: if ((sg = session_group_find(s)) == NULL)
583: return;
584: TAILQ_REMOVE(&sg->sessions, s, gentry);
585: if (TAILQ_NEXT(TAILQ_FIRST(&sg->sessions), gentry) == NULL)
586: TAILQ_REMOVE(&sg->sessions, TAILQ_FIRST(&sg->sessions), gentry);
587: if (TAILQ_EMPTY(&sg->sessions)) {
588: TAILQ_REMOVE(&session_groups, sg, entry);
1.36 nicm 589: free(sg);
1.11 nicm 590: }
591: }
592:
1.45 nicm 593: /* Count number of sessions in session group. */
594: u_int
595: session_group_count(struct session_group *sg)
596: {
597: struct session *s;
598: u_int n;
599:
600: n = 0;
601: TAILQ_FOREACH(s, &sg->sessions, gentry)
602: n++;
603: return (n);
604: }
605:
1.11 nicm 606: /* Synchronize a session to its session group. */
607: void
608: session_group_synchronize_to(struct session *s)
609: {
610: struct session_group *sg;
611: struct session *target;
612:
613: if ((sg = session_group_find(s)) == NULL)
614: return;
615:
616: target = NULL;
617: TAILQ_FOREACH(target, &sg->sessions, gentry) {
618: if (target != s)
619: break;
620: }
621: session_group_synchronize1(target, s);
622: }
623:
624: /* Synchronize a session group to a session. */
625: void
626: session_group_synchronize_from(struct session *target)
627: {
628: struct session_group *sg;
629: struct session *s;
630:
631: if ((sg = session_group_find(target)) == NULL)
632: return;
633:
634: TAILQ_FOREACH(s, &sg->sessions, gentry) {
635: if (s != target)
636: session_group_synchronize1(target, s);
637: }
638: }
639:
640: /*
641: * Synchronize a session with a target session. This means destroying all
642: * winlinks then recreating them, then updating the current window, last window
643: * stack and alerts.
644: */
645: void
646: session_group_synchronize1(struct session *target, struct session *s)
647: {
648: struct winlinks old_windows, *ww;
649: struct winlink_stack old_lastw;
650: struct winlink *wl, *wl2;
651:
652: /* Don't do anything if the session is empty (it'll be destroyed). */
653: ww = &target->windows;
654: if (RB_EMPTY(ww))
655: return;
656:
657: /* If the current window has vanished, move to the next now. */
1.16 nicm 658: if (s->curw != NULL &&
659: winlink_find_by_index(ww, s->curw->idx) == NULL &&
660: session_last(s) != 0 && session_previous(s, 0) != 0)
661: session_next(s, 0);
1.11 nicm 662:
663: /* Save the old pointer and reset it. */
664: memcpy(&old_windows, &s->windows, sizeof old_windows);
665: RB_INIT(&s->windows);
666:
667: /* Link all the windows from the target. */
1.18 nicm 668: RB_FOREACH(wl, winlinks, ww) {
1.30 nicm 669: wl2 = winlink_add(&s->windows, wl->idx);
670: winlink_set_window(wl2, wl->window);
1.33 nicm 671: notify_window_linked(s, wl2->window);
1.18 nicm 672: wl2->flags |= wl->flags & WINLINK_ALERTFLAGS;
673: }
1.11 nicm 674:
675: /* Fix up the current window. */
676: if (s->curw != NULL)
677: s->curw = winlink_find_by_index(&s->windows, s->curw->idx);
678: else
679: s->curw = winlink_find_by_index(&s->windows, target->curw->idx);
680:
681: /* Fix up the last window stack. */
682: memcpy(&old_lastw, &s->lastw, sizeof old_lastw);
683: TAILQ_INIT(&s->lastw);
684: TAILQ_FOREACH(wl, &old_lastw, sentry) {
685: wl2 = winlink_find_by_index(&s->windows, wl->idx);
686: if (wl2 != NULL)
687: TAILQ_INSERT_TAIL(&s->lastw, wl2, sentry);
688: }
689:
690: /* Then free the old winlinks list. */
691: while (!RB_EMPTY(&old_windows)) {
692: wl = RB_ROOT(&old_windows);
1.45 nicm 693: wl2 = winlink_find_by_window_id(&s->windows, wl->window->id);
694: if (wl2 == NULL)
695: notify_window_unlinked(s, wl->window);
1.13 nicm 696: winlink_remove(&old_windows, wl);
1.11 nicm 697: }
1.34 nicm 698: }
699:
700: /* Renumber the windows across winlinks attached to a specific session. */
701: void
702: session_renumber_windows(struct session *s)
703: {
704: struct winlink *wl, *wl1, *wl_new;
705: struct winlinks old_wins;
706: struct winlink_stack old_lastw;
707: int new_idx, new_curw_idx;
708:
709: /* Save and replace old window list. */
710: memcpy(&old_wins, &s->windows, sizeof old_wins);
711: RB_INIT(&s->windows);
712:
713: /* Start renumbering from the base-index if it's set. */
714: new_idx = options_get_number(&s->options, "base-index");
715: new_curw_idx = 0;
716:
717: /* Go through the winlinks and assign new indexes. */
718: RB_FOREACH(wl, winlinks, &old_wins) {
719: wl_new = winlink_add(&s->windows, new_idx);
720: winlink_set_window(wl_new, wl->window);
721: wl_new->flags |= wl->flags & WINLINK_ALERTFLAGS;
722:
723: if (wl == s->curw)
724: new_curw_idx = wl_new->idx;
725:
726: new_idx++;
727: }
728:
729: /* Fix the stack of last windows now. */
730: memcpy(&old_lastw, &s->lastw, sizeof old_lastw);
731: TAILQ_INIT(&s->lastw);
732: TAILQ_FOREACH(wl, &old_lastw, sentry) {
1.40 nicm 733: wl_new = winlink_find_by_window(&s->windows, wl->window);
1.34 nicm 734: if (wl_new != NULL)
735: TAILQ_INSERT_TAIL(&s->lastw, wl_new, sentry);
736: }
737:
738: /* Set the current window. */
739: s->curw = winlink_find_by_index(&s->windows, new_curw_idx);
740:
741: /* Free the old winlinks (reducing window references too). */
742: RB_FOREACH_SAFE(wl, winlinks, &old_wins, wl1)
743: winlink_remove(&old_wins, wl);
1.1 nicm 744: }
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