Annotation of src/usr.bin/tmux/session.c, Revision 1.89
1.89 ! nicm 1: /* $OpenBSD: session.c,v 1.88 2021/07/06 08:18:38 nicm Exp $ */
1.1 nicm 2:
3: /*
1.62 nicm 4: * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1 nicm 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>
1.87 nicm 26: #include <vis.h>
1.10 nicm 27: #include <time.h>
1.1 nicm 28:
29: #include "tmux.h"
30:
1.63 nicm 31: struct sessions sessions;
32: static u_int next_session_id;
1.80 nicm 33: struct session_groups session_groups = RB_INITIALIZER(&session_groups);
1.1 nicm 34:
1.63 nicm 35: static void session_free(int, short, void *);
1.50 nicm 36:
1.63 nicm 37: static void session_lock_timer(int, short, void *);
1.52 nicm 38:
1.63 nicm 39: static struct winlink *session_next_alert(struct winlink *);
40: static struct winlink *session_previous_alert(struct winlink *);
1.21 nicm 41:
1.64 nicm 42: static void session_group_remove(struct session *);
1.72 nicm 43: static void session_group_synchronize1(struct session *, struct session *);
44:
1.25 nicm 45: int
46: session_cmp(struct session *s1, struct session *s2)
47: {
48: return (strcmp(s1->name, s2->name));
49: }
1.80 nicm 50: RB_GENERATE(sessions, session, entry, session_cmp);
1.25 nicm 51:
1.80 nicm 52: static int
1.72 nicm 53: session_group_cmp(struct session_group *s1, struct session_group *s2)
54: {
55: return (strcmp(s1->name, s2->name));
56: }
1.80 nicm 57: RB_GENERATE_STATIC(session_groups, session_group, entry, session_group_cmp);
1.72 nicm 58:
1.21 nicm 59: /*
60: * Find if session is still alive. This is true if it is still on the global
61: * sessions list.
62: */
63: int
64: session_alive(struct session *s)
65: {
1.25 nicm 66: struct session *s_loop;
1.21 nicm 67:
1.25 nicm 68: RB_FOREACH(s_loop, sessions, &sessions) {
69: if (s_loop == s)
70: return (1);
71: }
72: return (0);
1.21 nicm 73: }
1.1 nicm 74:
75: /* Find session by name. */
76: struct session *
77: session_find(const char *name)
78: {
1.25 nicm 79: struct session s;
80:
81: s.name = (char *) name;
82: return (RB_FIND(sessions, &sessions, &s));
1.48 nicm 83: }
84:
85: /* Find session by id parsed from a string. */
86: struct session *
87: session_find_by_id_str(const char *s)
88: {
89: const char *errstr;
90: u_int id;
91:
92: if (*s != '$')
93: return (NULL);
94:
95: id = strtonum(s + 1, 0, UINT_MAX, &errstr);
96: if (errstr != NULL)
97: return (NULL);
98: return (session_find_by_id(id));
1.25 nicm 99: }
100:
1.38 nicm 101: /* Find session by id. */
1.25 nicm 102: struct session *
1.38 nicm 103: session_find_by_id(u_int id)
1.25 nicm 104: {
1.1 nicm 105: struct session *s;
106:
1.25 nicm 107: RB_FOREACH(s, sessions, &sessions) {
1.38 nicm 108: if (s->id == id)
1.1 nicm 109: return (s);
110: }
111: return (NULL);
112: }
113:
114: /* Create a new session. */
115: struct session *
1.84 nicm 116: session_create(const char *prefix, const char *name, const char *cwd,
117: struct environ *env, struct options *oo, struct termios *tio)
1.1 nicm 118: {
119: struct session *s;
120:
1.52 nicm 121: s = xcalloc(1, sizeof *s);
1.50 nicm 122: s->references = 1;
1.1 nicm 123: s->flags = 0;
1.7 nicm 124:
1.58 nicm 125: s->cwd = xstrdup(cwd);
1.19 nicm 126:
1.11 nicm 127: TAILQ_INIT(&s->lastw);
1.1 nicm 128: RB_INIT(&s->windows);
1.7 nicm 129:
1.84 nicm 130: s->environ = env;
1.82 nicm 131: s->options = oo;
1.71 nicm 132:
1.83 nicm 133: status_update_cache(s);
1.8 nicm 134:
135: s->tio = NULL;
136: if (tio != NULL) {
137: s->tio = xmalloc(sizeof *s->tio);
138: memcpy(s->tio, tio, sizeof *s->tio);
139: }
1.1 nicm 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: do {
1.38 nicm 146: s->id = next_session_id++;
1.46 nicm 147: free(s->name);
1.72 nicm 148: if (prefix != NULL)
149: xasprintf(&s->name, "%s-%u", prefix, s->id);
150: else
151: xasprintf(&s->name, "%u", s->id);
1.32 nicm 152: } while (RB_FIND(sessions, &sessions, s) != NULL);
153: }
1.25 nicm 154: RB_INSERT(sessions, &sessions, s);
1.15 nicm 155:
1.59 nicm 156: log_debug("new session %s $%u", s->name, s->id);
157:
1.52 nicm 158: if (gettimeofday(&s->creation_time, NULL) != 0)
159: fatal("gettimeofday failed");
160: session_update_activity(s, &s->creation_time);
161:
1.1 nicm 162: return (s);
163: }
164:
1.75 nicm 165: /* Add a reference to a session. */
166: void
167: session_add_ref(struct session *s, const char *from)
168: {
169: s->references++;
170: log_debug("%s: %s %s, now %d", __func__, s->name, from, s->references);
171: }
172:
1.50 nicm 173: /* Remove a reference from a session. */
174: void
1.75 nicm 175: session_remove_ref(struct session *s, const char *from)
1.50 nicm 176: {
1.75 nicm 177: s->references--;
178: log_debug("%s: %s %s, now %d", __func__, s->name, from, s->references);
1.50 nicm 179:
180: if (s->references == 0)
181: event_once(-1, EV_TIMEOUT, session_free, s, NULL);
182: }
183:
184: /* Free session. */
1.63 nicm 185: static void
1.60 nicm 186: session_free(__unused int fd, __unused short events, void *arg)
1.50 nicm 187: {
188: struct session *s = arg;
189:
1.55 nicm 190: log_debug("session %s freed (%d references)", s->name, s->references);
1.50 nicm 191:
1.53 nicm 192: if (s->references == 0) {
1.57 nicm 193: environ_free(s->environ);
1.56 nicm 194: options_free(s->options);
195:
1.53 nicm 196: free(s->name);
1.50 nicm 197: free(s);
1.53 nicm 198: }
1.50 nicm 199: }
200:
1.1 nicm 201: /* Destroy a session. */
202: void
1.84 nicm 203: session_destroy(struct session *s, int notify, const char *from)
1.1 nicm 204: {
1.33 nicm 205: struct winlink *wl;
1.39 nicm 206:
1.77 nicm 207: log_debug("session %s destroyed (%s)", s->name, from);
1.66 nicm 208: s->curw = NULL;
1.1 nicm 209:
1.25 nicm 210: RB_REMOVE(sessions, &sessions, s);
1.84 nicm 211: if (notify)
212: notify_session("session-closed", s);
1.1 nicm 213:
1.36 nicm 214: free(s->tio);
1.8 nicm 215:
1.52 nicm 216: if (event_initialized(&s->lock_timer))
217: event_del(&s->lock_timer);
218:
1.11 nicm 219: session_group_remove(s);
1.1 nicm 220:
1.11 nicm 221: while (!TAILQ_EMPTY(&s->lastw))
222: winlink_stack_remove(&s->lastw, TAILQ_FIRST(&s->lastw));
1.33 nicm 223: while (!RB_EMPTY(&s->windows)) {
224: wl = RB_ROOT(&s->windows);
1.68 nicm 225: notify_session_window("window-unlinked", s, wl->window);
1.33 nicm 226: winlink_remove(&s->windows, wl);
227: }
1.1 nicm 228:
1.58 nicm 229: free((void *)s->cwd);
1.15 nicm 230:
1.75 nicm 231: session_remove_ref(s, __func__);
1.31 nicm 232: }
233:
1.87 nicm 234: /* Sanitize session name. */
235: char *
1.31 nicm 236: session_check_name(const char *name)
237: {
1.87 nicm 238: char *copy, *cp, *new_name;
239:
1.88 nicm 240: if (*name == '\0')
241: return (NULL);
1.87 nicm 242: copy = xstrdup(name);
243: for (cp = copy; *cp != '\0'; cp++) {
244: if (*cp == ':' || *cp == '.')
245: *cp = '_';
246: }
247: utf8_stravis(&new_name, copy, VIS_OCTAL|VIS_CSTYLE|VIS_TAB|VIS_NL);
248: free(copy);
249: return (new_name);
1.27 nicm 250: }
251:
1.52 nicm 252: /* Lock session if it has timed out. */
1.63 nicm 253: static void
1.60 nicm 254: session_lock_timer(__unused int fd, __unused short events, void *arg)
1.52 nicm 255: {
256: struct session *s = arg;
257:
1.81 nicm 258: if (s->attached == 0)
1.52 nicm 259: return;
260:
261: log_debug("session %s locked, activity time %lld", s->name,
262: (long long)s->activity_time.tv_sec);
263:
264: server_lock_session(s);
265: recalculate_sizes();
266: }
267:
1.51 nicm 268: /* Update activity time. */
1.27 nicm 269: void
1.51 nicm 270: session_update_activity(struct session *s, struct timeval *from)
1.27 nicm 271: {
1.51 nicm 272: struct timeval *last = &s->last_activity_time;
1.52 nicm 273: struct timeval tv;
1.51 nicm 274:
275: memcpy(last, &s->activity_time, sizeof *last);
276: if (from == NULL)
277: gettimeofday(&s->activity_time, NULL);
278: else
279: memcpy(&s->activity_time, from, sizeof s->activity_time);
1.59 nicm 280:
1.79 nicm 281: log_debug("session $%u %s activity %lld.%06d (last %lld.%06d)", s->id,
282: s->name, (long long)s->activity_time.tv_sec,
283: (int)s->activity_time.tv_usec, (long long)last->tv_sec,
284: (int)last->tv_usec);
1.52 nicm 285:
286: if (evtimer_initialized(&s->lock_timer))
287: evtimer_del(&s->lock_timer);
288: else
289: evtimer_set(&s->lock_timer, session_lock_timer, s);
290:
1.81 nicm 291: if (s->attached != 0) {
1.52 nicm 292: timerclear(&tv);
1.56 nicm 293: tv.tv_sec = options_get_number(s->options, "lock-after-time");
1.52 nicm 294: if (tv.tv_sec != 0)
295: evtimer_add(&s->lock_timer, &tv);
296: }
1.20 nicm 297: }
298:
299: /* Find the next usable session. */
300: struct session *
301: session_next_session(struct session *s)
302: {
303: struct session *s2;
304:
1.25 nicm 305: if (RB_EMPTY(&sessions) || !session_alive(s))
1.20 nicm 306: return (NULL);
307:
1.29 nicm 308: s2 = RB_NEXT(sessions, &sessions, s);
1.28 nicm 309: if (s2 == NULL)
310: s2 = RB_MIN(sessions, &sessions);
1.25 nicm 311: if (s2 == s)
312: return (NULL);
1.20 nicm 313: return (s2);
314: }
315:
316: /* Find the previous usable session. */
317: struct session *
318: session_previous_session(struct session *s)
319: {
320: struct session *s2;
321:
1.25 nicm 322: if (RB_EMPTY(&sessions) || !session_alive(s))
1.20 nicm 323: return (NULL);
324:
1.29 nicm 325: s2 = RB_PREV(sessions, &sessions, s);
1.28 nicm 326: if (s2 == NULL)
327: s2 = RB_MAX(sessions, &sessions);
1.25 nicm 328: if (s2 == s)
329: return (NULL);
1.20 nicm 330: return (s2);
1.1 nicm 331: }
332:
333: /* Attach a window to a session. */
334: struct winlink *
335: session_attach(struct session *s, struct window *w, int idx, char **cause)
336: {
337: struct winlink *wl;
338:
1.30 nicm 339: if ((wl = winlink_add(&s->windows, idx)) == NULL) {
1.1 nicm 340: xasprintf(cause, "index in use: %d", idx);
1.30 nicm 341: return (NULL);
342: }
1.70 nicm 343: wl->session = s;
1.30 nicm 344: winlink_set_window(wl, w);
1.68 nicm 345: notify_session_window("window-linked", s, w);
1.30 nicm 346:
1.11 nicm 347: session_group_synchronize_from(s);
1.1 nicm 348: return (wl);
349: }
350:
351: /* Detach a window from a session. */
352: int
353: session_detach(struct session *s, struct winlink *wl)
354: {
355: if (s->curw == wl &&
1.66 nicm 356: session_last(s) != 0 &&
357: session_previous(s, 0) != 0)
1.1 nicm 358: session_next(s, 0);
359:
1.18 nicm 360: wl->flags &= ~WINLINK_ALERTFLAGS;
1.68 nicm 361: notify_session_window("window-unlinked", s, wl->window);
1.1 nicm 362: winlink_stack_remove(&s->lastw, wl);
363: winlink_remove(&s->windows, wl);
1.66 nicm 364:
1.11 nicm 365: session_group_synchronize_from(s);
1.66 nicm 366:
1.1 nicm 367: if (RB_EMPTY(&s->windows)) {
1.84 nicm 368: session_destroy(s, 1, __func__);
1.1 nicm 369: return (1);
370: }
371: return (0);
372: }
373:
374: /* Return if session has window. */
1.47 nicm 375: int
1.1 nicm 376: session_has(struct session *s, struct window *w)
377: {
378: struct winlink *wl;
379:
1.70 nicm 380: TAILQ_FOREACH(wl, &w->winlinks, wentry) {
381: if (wl->session == s)
1.47 nicm 382: return (1);
1.1 nicm 383: }
1.47 nicm 384: return (0);
1.49 nicm 385: }
386:
387: /*
388: * Return 1 if a window is linked outside this session (not including session
389: * groups). The window must be in this session!
390: */
391: int
392: session_is_linked(struct session *s, struct window *w)
393: {
394: struct session_group *sg;
395:
1.72 nicm 396: if ((sg = session_group_contains(s)) != NULL)
1.49 nicm 397: return (w->references != session_group_count(sg));
398: return (w->references != 1);
1.1 nicm 399: }
400:
1.63 nicm 401: static struct winlink *
1.18 nicm 402: session_next_alert(struct winlink *wl)
1.1 nicm 403: {
404: while (wl != NULL) {
1.18 nicm 405: if (wl->flags & WINLINK_ALERTFLAGS)
1.1 nicm 406: break;
1.14 nicm 407: wl = winlink_next(wl);
1.1 nicm 408: }
409: return (wl);
410: }
411:
412: /* Move session to next window. */
413: int
1.17 nicm 414: session_next(struct session *s, int alert)
1.1 nicm 415: {
416: struct winlink *wl;
417:
418: if (s->curw == NULL)
419: return (-1);
420:
1.14 nicm 421: wl = winlink_next(s->curw);
1.17 nicm 422: if (alert)
1.18 nicm 423: wl = session_next_alert(wl);
1.1 nicm 424: if (wl == NULL) {
425: wl = RB_MIN(winlinks, &s->windows);
1.18 nicm 426: if (alert && ((wl = session_next_alert(wl)) == NULL))
1.1 nicm 427: return (-1);
428: }
1.37 nicm 429: return (session_set_current(s, wl));
1.1 nicm 430: }
431:
1.63 nicm 432: static struct winlink *
1.18 nicm 433: session_previous_alert(struct winlink *wl)
1.1 nicm 434: {
435: while (wl != NULL) {
1.18 nicm 436: if (wl->flags & WINLINK_ALERTFLAGS)
1.1 nicm 437: break;
1.14 nicm 438: wl = winlink_previous(wl);
1.1 nicm 439: }
440: return (wl);
441: }
442:
443: /* Move session to previous window. */
444: int
1.17 nicm 445: session_previous(struct session *s, int alert)
1.1 nicm 446: {
447: struct winlink *wl;
448:
449: if (s->curw == NULL)
450: return (-1);
451:
1.14 nicm 452: wl = winlink_previous(s->curw);
1.17 nicm 453: if (alert)
1.18 nicm 454: wl = session_previous_alert(wl);
1.1 nicm 455: if (wl == NULL) {
456: wl = RB_MAX(winlinks, &s->windows);
1.18 nicm 457: if (alert && (wl = session_previous_alert(wl)) == NULL)
1.1 nicm 458: return (-1);
459: }
1.37 nicm 460: return (session_set_current(s, wl));
1.1 nicm 461: }
462:
463: /* Move session to specific window. */
464: int
465: session_select(struct session *s, int idx)
466: {
467: struct winlink *wl;
468:
469: wl = winlink_find_by_index(&s->windows, idx);
1.37 nicm 470: return (session_set_current(s, wl));
1.1 nicm 471: }
472:
473: /* Move session to last used window. */
474: int
475: session_last(struct session *s)
476: {
477: struct winlink *wl;
478:
1.11 nicm 479: wl = TAILQ_FIRST(&s->lastw);
1.37 nicm 480: if (wl == NULL)
481: return (-1);
482: if (wl == s->curw)
483: return (1);
484:
485: return (session_set_current(s, wl));
486: }
487:
488: /* Set current winlink to wl .*/
489: int
490: session_set_current(struct session *s, struct winlink *wl)
491: {
1.89 ! nicm 492: struct winlink *old = s->curw;
! 493:
1.1 nicm 494: if (wl == NULL)
495: return (-1);
496: if (wl == s->curw)
497: return (1);
498:
499: winlink_stack_remove(&s->lastw, wl);
500: winlink_stack_push(&s->lastw, s->curw);
501: s->curw = wl;
1.89 ! nicm 502: if (options_get_number(global_options, "focus-events")) {
! 503: window_update_focus(old->window);
! 504: window_update_focus(wl->window);
! 505: }
1.35 nicm 506: winlink_clear_flags(wl);
1.54 nicm 507: window_update_activity(wl->window);
1.82 nicm 508: tty_update_window_offset(wl->window);
1.76 nicm 509: notify_session("session-window-changed", s);
1.1 nicm 510: return (0);
1.11 nicm 511: }
512:
513: /* Find the session group containing a session. */
514: struct session_group *
1.72 nicm 515: session_group_contains(struct session *target)
1.11 nicm 516: {
517: struct session_group *sg;
518: struct session *s;
519:
1.72 nicm 520: RB_FOREACH(sg, session_groups, &session_groups) {
1.11 nicm 521: TAILQ_FOREACH(s, &sg->sessions, gentry) {
522: if (s == target)
523: return (sg);
524: }
525: }
526: return (NULL);
527: }
528:
1.72 nicm 529: /* Find session group by name. */
530: struct session_group *
531: session_group_find(const char *name)
1.11 nicm 532: {
1.72 nicm 533: struct session_group sg;
534:
535: sg.name = name;
536: return (RB_FIND(session_groups, &session_groups, &sg));
537: }
1.11 nicm 538:
1.72 nicm 539: /* Create a new session group. */
540: struct session_group *
541: session_group_new(const char *name)
542: {
543: struct session_group *sg;
544:
545: if ((sg = session_group_find(name)) != NULL)
546: return (sg);
547:
548: sg = xcalloc(1, sizeof *sg);
549: sg->name = xstrdup(name);
550: TAILQ_INIT(&sg->sessions);
1.11 nicm 551:
1.72 nicm 552: RB_INSERT(session_groups, &session_groups, sg);
553: return (sg);
1.11 nicm 554: }
555:
1.72 nicm 556: /* Add a session to a session group. */
1.11 nicm 557: void
1.72 nicm 558: session_group_add(struct session_group *sg, struct session *s)
1.11 nicm 559: {
1.72 nicm 560: if (session_group_contains(s) == NULL)
561: TAILQ_INSERT_TAIL(&sg->sessions, s, gentry);
1.11 nicm 562: }
563:
564: /* Remove a session from its group and destroy the group if empty. */
1.64 nicm 565: static void
1.11 nicm 566: session_group_remove(struct session *s)
567: {
568: struct session_group *sg;
569:
1.72 nicm 570: if ((sg = session_group_contains(s)) == NULL)
1.11 nicm 571: return;
572: TAILQ_REMOVE(&sg->sessions, s, gentry);
573: if (TAILQ_EMPTY(&sg->sessions)) {
1.72 nicm 574: RB_REMOVE(session_groups, &session_groups, sg);
1.87 nicm 575: free((void *)sg->name);
1.36 nicm 576: free(sg);
1.11 nicm 577: }
578: }
579:
1.45 nicm 580: /* Count number of sessions in session group. */
1.78 nicm 581: u_int
1.45 nicm 582: session_group_count(struct session_group *sg)
583: {
584: struct session *s;
585: u_int n;
586:
587: n = 0;
588: TAILQ_FOREACH(s, &sg->sessions, gentry)
1.86 nicm 589: n++;
590: return (n);
591: }
592:
593: /* Count number of clients attached to sessions in session group. */
594: u_int
595: session_group_attached_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 += s->attached;
1.45 nicm 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:
1.72 nicm 613: if ((sg = session_group_contains(s)) == NULL)
1.11 nicm 614: return;
615:
616: target = NULL;
617: TAILQ_FOREACH(target, &sg->sessions, gentry) {
618: if (target != s)
619: break;
620: }
1.72 nicm 621: if (target != NULL)
622: session_group_synchronize1(target, s);
1.11 nicm 623: }
624:
625: /* Synchronize a session group to a session. */
626: void
627: session_group_synchronize_from(struct session *target)
628: {
629: struct session_group *sg;
630: struct session *s;
631:
1.72 nicm 632: if ((sg = session_group_contains(target)) == NULL)
1.11 nicm 633: return;
634:
635: TAILQ_FOREACH(s, &sg->sessions, gentry) {
636: if (s != target)
637: session_group_synchronize1(target, s);
638: }
639: }
640:
641: /*
642: * Synchronize a session with a target session. This means destroying all
643: * winlinks then recreating them, then updating the current window, last window
644: * stack and alerts.
645: */
1.64 nicm 646: static void
1.11 nicm 647: session_group_synchronize1(struct session *target, struct session *s)
648: {
649: struct winlinks old_windows, *ww;
650: struct winlink_stack old_lastw;
651: struct winlink *wl, *wl2;
652:
653: /* Don't do anything if the session is empty (it'll be destroyed). */
654: ww = &target->windows;
655: if (RB_EMPTY(ww))
656: return;
657:
658: /* If the current window has vanished, move to the next now. */
1.16 nicm 659: if (s->curw != NULL &&
660: winlink_find_by_index(ww, s->curw->idx) == NULL &&
661: session_last(s) != 0 && session_previous(s, 0) != 0)
662: session_next(s, 0);
1.11 nicm 663:
664: /* Save the old pointer and reset it. */
665: memcpy(&old_windows, &s->windows, sizeof old_windows);
666: RB_INIT(&s->windows);
667:
668: /* Link all the windows from the target. */
1.18 nicm 669: RB_FOREACH(wl, winlinks, ww) {
1.30 nicm 670: wl2 = winlink_add(&s->windows, wl->idx);
1.70 nicm 671: wl2->session = s;
1.30 nicm 672: winlink_set_window(wl2, wl->window);
1.68 nicm 673: notify_session_window("window-linked", s, wl2->window);
1.18 nicm 674: wl2->flags |= wl->flags & WINLINK_ALERTFLAGS;
675: }
1.11 nicm 676:
677: /* Fix up the current window. */
678: if (s->curw != NULL)
679: s->curw = winlink_find_by_index(&s->windows, s->curw->idx);
680: else
681: s->curw = winlink_find_by_index(&s->windows, target->curw->idx);
682:
683: /* Fix up the last window stack. */
684: memcpy(&old_lastw, &s->lastw, sizeof old_lastw);
685: TAILQ_INIT(&s->lastw);
686: TAILQ_FOREACH(wl, &old_lastw, sentry) {
687: wl2 = winlink_find_by_index(&s->windows, wl->idx);
688: if (wl2 != NULL)
689: TAILQ_INSERT_TAIL(&s->lastw, wl2, sentry);
690: }
691:
692: /* Then free the old winlinks list. */
693: while (!RB_EMPTY(&old_windows)) {
694: wl = RB_ROOT(&old_windows);
1.45 nicm 695: wl2 = winlink_find_by_window_id(&s->windows, wl->window->id);
696: if (wl2 == NULL)
1.68 nicm 697: notify_session_window("window-unlinked", s, wl->window);
1.13 nicm 698: winlink_remove(&old_windows, wl);
1.11 nicm 699: }
1.34 nicm 700: }
701:
702: /* Renumber the windows across winlinks attached to a specific session. */
703: void
704: session_renumber_windows(struct session *s)
705: {
706: struct winlink *wl, *wl1, *wl_new;
707: struct winlinks old_wins;
708: struct winlink_stack old_lastw;
709: int new_idx, new_curw_idx;
710:
711: /* Save and replace old window list. */
712: memcpy(&old_wins, &s->windows, sizeof old_wins);
713: RB_INIT(&s->windows);
714:
715: /* Start renumbering from the base-index if it's set. */
1.56 nicm 716: new_idx = options_get_number(s->options, "base-index");
1.34 nicm 717: new_curw_idx = 0;
718:
719: /* Go through the winlinks and assign new indexes. */
720: RB_FOREACH(wl, winlinks, &old_wins) {
721: wl_new = winlink_add(&s->windows, new_idx);
1.70 nicm 722: wl_new->session = s;
1.34 nicm 723: winlink_set_window(wl_new, wl->window);
724: wl_new->flags |= wl->flags & WINLINK_ALERTFLAGS;
725:
726: if (wl == s->curw)
727: new_curw_idx = wl_new->idx;
728:
729: new_idx++;
730: }
731:
732: /* Fix the stack of last windows now. */
733: memcpy(&old_lastw, &s->lastw, sizeof old_lastw);
734: TAILQ_INIT(&s->lastw);
735: TAILQ_FOREACH(wl, &old_lastw, sentry) {
1.40 nicm 736: wl_new = winlink_find_by_window(&s->windows, wl->window);
1.34 nicm 737: if (wl_new != NULL)
738: TAILQ_INSERT_TAIL(&s->lastw, wl_new, sentry);
739: }
740:
741: /* Set the current window. */
742: s->curw = winlink_find_by_index(&s->windows, new_curw_idx);
743:
744: /* Free the old winlinks (reducing window references too). */
745: RB_FOREACH_SAFE(wl, winlinks, &old_wins, wl1)
746: winlink_remove(&old_wins, wl);
1.1 nicm 747: }
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