Annotation of src/usr.bin/tmux/session.c, Revision 1.90
1.90 ! nicm 1: /* $OpenBSD: session.c,v 1.89 2021/08/13 06:52:51 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);
1.90 ! nicm 208:
! 209: if (s->curw == NULL)
! 210: return;
1.66 nicm 211: s->curw = NULL;
1.1 nicm 212:
1.25 nicm 213: RB_REMOVE(sessions, &sessions, s);
1.84 nicm 214: if (notify)
215: notify_session("session-closed", s);
1.1 nicm 216:
1.36 nicm 217: free(s->tio);
1.8 nicm 218:
1.52 nicm 219: if (event_initialized(&s->lock_timer))
220: event_del(&s->lock_timer);
221:
1.11 nicm 222: session_group_remove(s);
1.1 nicm 223:
1.11 nicm 224: while (!TAILQ_EMPTY(&s->lastw))
225: winlink_stack_remove(&s->lastw, TAILQ_FIRST(&s->lastw));
1.33 nicm 226: while (!RB_EMPTY(&s->windows)) {
227: wl = RB_ROOT(&s->windows);
1.68 nicm 228: notify_session_window("window-unlinked", s, wl->window);
1.33 nicm 229: winlink_remove(&s->windows, wl);
230: }
1.1 nicm 231:
1.58 nicm 232: free((void *)s->cwd);
1.15 nicm 233:
1.75 nicm 234: session_remove_ref(s, __func__);
1.31 nicm 235: }
236:
1.87 nicm 237: /* Sanitize session name. */
238: char *
1.31 nicm 239: session_check_name(const char *name)
240: {
1.87 nicm 241: char *copy, *cp, *new_name;
242:
1.88 nicm 243: if (*name == '\0')
244: return (NULL);
1.87 nicm 245: copy = xstrdup(name);
246: for (cp = copy; *cp != '\0'; cp++) {
247: if (*cp == ':' || *cp == '.')
248: *cp = '_';
249: }
250: utf8_stravis(&new_name, copy, VIS_OCTAL|VIS_CSTYLE|VIS_TAB|VIS_NL);
251: free(copy);
252: return (new_name);
1.27 nicm 253: }
254:
1.52 nicm 255: /* Lock session if it has timed out. */
1.63 nicm 256: static void
1.60 nicm 257: session_lock_timer(__unused int fd, __unused short events, void *arg)
1.52 nicm 258: {
259: struct session *s = arg;
260:
1.81 nicm 261: if (s->attached == 0)
1.52 nicm 262: return;
263:
264: log_debug("session %s locked, activity time %lld", s->name,
265: (long long)s->activity_time.tv_sec);
266:
267: server_lock_session(s);
268: recalculate_sizes();
269: }
270:
1.51 nicm 271: /* Update activity time. */
1.27 nicm 272: void
1.51 nicm 273: session_update_activity(struct session *s, struct timeval *from)
1.27 nicm 274: {
1.51 nicm 275: struct timeval *last = &s->last_activity_time;
1.52 nicm 276: struct timeval tv;
1.51 nicm 277:
278: memcpy(last, &s->activity_time, sizeof *last);
279: if (from == NULL)
280: gettimeofday(&s->activity_time, NULL);
281: else
282: memcpy(&s->activity_time, from, sizeof s->activity_time);
1.59 nicm 283:
1.79 nicm 284: log_debug("session $%u %s activity %lld.%06d (last %lld.%06d)", s->id,
285: s->name, (long long)s->activity_time.tv_sec,
286: (int)s->activity_time.tv_usec, (long long)last->tv_sec,
287: (int)last->tv_usec);
1.52 nicm 288:
289: if (evtimer_initialized(&s->lock_timer))
290: evtimer_del(&s->lock_timer);
291: else
292: evtimer_set(&s->lock_timer, session_lock_timer, s);
293:
1.81 nicm 294: if (s->attached != 0) {
1.52 nicm 295: timerclear(&tv);
1.56 nicm 296: tv.tv_sec = options_get_number(s->options, "lock-after-time");
1.52 nicm 297: if (tv.tv_sec != 0)
298: evtimer_add(&s->lock_timer, &tv);
299: }
1.20 nicm 300: }
301:
302: /* Find the next usable session. */
303: struct session *
304: session_next_session(struct session *s)
305: {
306: struct session *s2;
307:
1.25 nicm 308: if (RB_EMPTY(&sessions) || !session_alive(s))
1.20 nicm 309: return (NULL);
310:
1.29 nicm 311: s2 = RB_NEXT(sessions, &sessions, s);
1.28 nicm 312: if (s2 == NULL)
313: s2 = RB_MIN(sessions, &sessions);
1.25 nicm 314: if (s2 == s)
315: return (NULL);
1.20 nicm 316: return (s2);
317: }
318:
319: /* Find the previous usable session. */
320: struct session *
321: session_previous_session(struct session *s)
322: {
323: struct session *s2;
324:
1.25 nicm 325: if (RB_EMPTY(&sessions) || !session_alive(s))
1.20 nicm 326: return (NULL);
327:
1.29 nicm 328: s2 = RB_PREV(sessions, &sessions, s);
1.28 nicm 329: if (s2 == NULL)
330: s2 = RB_MAX(sessions, &sessions);
1.25 nicm 331: if (s2 == s)
332: return (NULL);
1.20 nicm 333: return (s2);
1.1 nicm 334: }
335:
336: /* Attach a window to a session. */
337: struct winlink *
338: session_attach(struct session *s, struct window *w, int idx, char **cause)
339: {
340: struct winlink *wl;
341:
1.30 nicm 342: if ((wl = winlink_add(&s->windows, idx)) == NULL) {
1.1 nicm 343: xasprintf(cause, "index in use: %d", idx);
1.30 nicm 344: return (NULL);
345: }
1.70 nicm 346: wl->session = s;
1.30 nicm 347: winlink_set_window(wl, w);
1.68 nicm 348: notify_session_window("window-linked", s, w);
1.30 nicm 349:
1.11 nicm 350: session_group_synchronize_from(s);
1.1 nicm 351: return (wl);
352: }
353:
354: /* Detach a window from a session. */
355: int
356: session_detach(struct session *s, struct winlink *wl)
357: {
358: if (s->curw == wl &&
1.66 nicm 359: session_last(s) != 0 &&
360: session_previous(s, 0) != 0)
1.1 nicm 361: session_next(s, 0);
362:
1.18 nicm 363: wl->flags &= ~WINLINK_ALERTFLAGS;
1.68 nicm 364: notify_session_window("window-unlinked", s, wl->window);
1.1 nicm 365: winlink_stack_remove(&s->lastw, wl);
366: winlink_remove(&s->windows, wl);
1.66 nicm 367:
1.11 nicm 368: session_group_synchronize_from(s);
1.66 nicm 369:
1.1 nicm 370: if (RB_EMPTY(&s->windows)) {
1.84 nicm 371: session_destroy(s, 1, __func__);
1.1 nicm 372: return (1);
373: }
374: return (0);
375: }
376:
377: /* Return if session has window. */
1.47 nicm 378: int
1.1 nicm 379: session_has(struct session *s, struct window *w)
380: {
381: struct winlink *wl;
382:
1.70 nicm 383: TAILQ_FOREACH(wl, &w->winlinks, wentry) {
384: if (wl->session == s)
1.47 nicm 385: return (1);
1.1 nicm 386: }
1.47 nicm 387: return (0);
1.49 nicm 388: }
389:
390: /*
391: * Return 1 if a window is linked outside this session (not including session
392: * groups). The window must be in this session!
393: */
394: int
395: session_is_linked(struct session *s, struct window *w)
396: {
397: struct session_group *sg;
398:
1.72 nicm 399: if ((sg = session_group_contains(s)) != NULL)
1.49 nicm 400: return (w->references != session_group_count(sg));
401: return (w->references != 1);
1.1 nicm 402: }
403:
1.63 nicm 404: static struct winlink *
1.18 nicm 405: session_next_alert(struct winlink *wl)
1.1 nicm 406: {
407: while (wl != NULL) {
1.18 nicm 408: if (wl->flags & WINLINK_ALERTFLAGS)
1.1 nicm 409: break;
1.14 nicm 410: wl = winlink_next(wl);
1.1 nicm 411: }
412: return (wl);
413: }
414:
415: /* Move session to next window. */
416: int
1.17 nicm 417: session_next(struct session *s, int alert)
1.1 nicm 418: {
419: struct winlink *wl;
420:
421: if (s->curw == NULL)
422: return (-1);
423:
1.14 nicm 424: wl = winlink_next(s->curw);
1.17 nicm 425: if (alert)
1.18 nicm 426: wl = session_next_alert(wl);
1.1 nicm 427: if (wl == NULL) {
428: wl = RB_MIN(winlinks, &s->windows);
1.18 nicm 429: if (alert && ((wl = session_next_alert(wl)) == NULL))
1.1 nicm 430: return (-1);
431: }
1.37 nicm 432: return (session_set_current(s, wl));
1.1 nicm 433: }
434:
1.63 nicm 435: static struct winlink *
1.18 nicm 436: session_previous_alert(struct winlink *wl)
1.1 nicm 437: {
438: while (wl != NULL) {
1.18 nicm 439: if (wl->flags & WINLINK_ALERTFLAGS)
1.1 nicm 440: break;
1.14 nicm 441: wl = winlink_previous(wl);
1.1 nicm 442: }
443: return (wl);
444: }
445:
446: /* Move session to previous window. */
447: int
1.17 nicm 448: session_previous(struct session *s, int alert)
1.1 nicm 449: {
450: struct winlink *wl;
451:
452: if (s->curw == NULL)
453: return (-1);
454:
1.14 nicm 455: wl = winlink_previous(s->curw);
1.17 nicm 456: if (alert)
1.18 nicm 457: wl = session_previous_alert(wl);
1.1 nicm 458: if (wl == NULL) {
459: wl = RB_MAX(winlinks, &s->windows);
1.18 nicm 460: if (alert && (wl = session_previous_alert(wl)) == NULL)
1.1 nicm 461: return (-1);
462: }
1.37 nicm 463: return (session_set_current(s, wl));
1.1 nicm 464: }
465:
466: /* Move session to specific window. */
467: int
468: session_select(struct session *s, int idx)
469: {
470: struct winlink *wl;
471:
472: wl = winlink_find_by_index(&s->windows, idx);
1.37 nicm 473: return (session_set_current(s, wl));
1.1 nicm 474: }
475:
476: /* Move session to last used window. */
477: int
478: session_last(struct session *s)
479: {
480: struct winlink *wl;
481:
1.11 nicm 482: wl = TAILQ_FIRST(&s->lastw);
1.37 nicm 483: if (wl == NULL)
484: return (-1);
485: if (wl == s->curw)
486: return (1);
487:
488: return (session_set_current(s, wl));
489: }
490:
491: /* Set current winlink to wl .*/
492: int
493: session_set_current(struct session *s, struct winlink *wl)
494: {
1.89 nicm 495: struct winlink *old = s->curw;
496:
1.1 nicm 497: if (wl == NULL)
498: return (-1);
499: if (wl == s->curw)
500: return (1);
501:
502: winlink_stack_remove(&s->lastw, wl);
503: winlink_stack_push(&s->lastw, s->curw);
504: s->curw = wl;
1.89 nicm 505: if (options_get_number(global_options, "focus-events")) {
506: window_update_focus(old->window);
507: window_update_focus(wl->window);
508: }
1.35 nicm 509: winlink_clear_flags(wl);
1.54 nicm 510: window_update_activity(wl->window);
1.82 nicm 511: tty_update_window_offset(wl->window);
1.76 nicm 512: notify_session("session-window-changed", s);
1.1 nicm 513: return (0);
1.11 nicm 514: }
515:
516: /* Find the session group containing a session. */
517: struct session_group *
1.72 nicm 518: session_group_contains(struct session *target)
1.11 nicm 519: {
520: struct session_group *sg;
521: struct session *s;
522:
1.72 nicm 523: RB_FOREACH(sg, session_groups, &session_groups) {
1.11 nicm 524: TAILQ_FOREACH(s, &sg->sessions, gentry) {
525: if (s == target)
526: return (sg);
527: }
528: }
529: return (NULL);
530: }
531:
1.72 nicm 532: /* Find session group by name. */
533: struct session_group *
534: session_group_find(const char *name)
1.11 nicm 535: {
1.72 nicm 536: struct session_group sg;
537:
538: sg.name = name;
539: return (RB_FIND(session_groups, &session_groups, &sg));
540: }
1.11 nicm 541:
1.72 nicm 542: /* Create a new session group. */
543: struct session_group *
544: session_group_new(const char *name)
545: {
546: struct session_group *sg;
547:
548: if ((sg = session_group_find(name)) != NULL)
549: return (sg);
550:
551: sg = xcalloc(1, sizeof *sg);
552: sg->name = xstrdup(name);
553: TAILQ_INIT(&sg->sessions);
1.11 nicm 554:
1.72 nicm 555: RB_INSERT(session_groups, &session_groups, sg);
556: return (sg);
1.11 nicm 557: }
558:
1.72 nicm 559: /* Add a session to a session group. */
1.11 nicm 560: void
1.72 nicm 561: session_group_add(struct session_group *sg, struct session *s)
1.11 nicm 562: {
1.72 nicm 563: if (session_group_contains(s) == NULL)
564: TAILQ_INSERT_TAIL(&sg->sessions, s, gentry);
1.11 nicm 565: }
566:
567: /* Remove a session from its group and destroy the group if empty. */
1.64 nicm 568: static void
1.11 nicm 569: session_group_remove(struct session *s)
570: {
571: struct session_group *sg;
572:
1.72 nicm 573: if ((sg = session_group_contains(s)) == NULL)
1.11 nicm 574: return;
575: TAILQ_REMOVE(&sg->sessions, s, gentry);
576: if (TAILQ_EMPTY(&sg->sessions)) {
1.72 nicm 577: RB_REMOVE(session_groups, &session_groups, sg);
1.87 nicm 578: free((void *)sg->name);
1.36 nicm 579: free(sg);
1.11 nicm 580: }
581: }
582:
1.45 nicm 583: /* Count number of sessions in session group. */
1.78 nicm 584: u_int
1.45 nicm 585: session_group_count(struct session_group *sg)
586: {
587: struct session *s;
588: u_int n;
589:
590: n = 0;
591: TAILQ_FOREACH(s, &sg->sessions, gentry)
1.86 nicm 592: n++;
593: return (n);
594: }
595:
596: /* Count number of clients attached to sessions in session group. */
597: u_int
598: session_group_attached_count(struct session_group *sg)
599: {
600: struct session *s;
601: u_int n;
602:
603: n = 0;
604: TAILQ_FOREACH(s, &sg->sessions, gentry)
605: n += s->attached;
1.45 nicm 606: return (n);
607: }
608:
1.11 nicm 609: /* Synchronize a session to its session group. */
610: void
611: session_group_synchronize_to(struct session *s)
612: {
613: struct session_group *sg;
614: struct session *target;
615:
1.72 nicm 616: if ((sg = session_group_contains(s)) == NULL)
1.11 nicm 617: return;
618:
619: target = NULL;
620: TAILQ_FOREACH(target, &sg->sessions, gentry) {
621: if (target != s)
622: break;
623: }
1.72 nicm 624: if (target != NULL)
625: session_group_synchronize1(target, s);
1.11 nicm 626: }
627:
628: /* Synchronize a session group to a session. */
629: void
630: session_group_synchronize_from(struct session *target)
631: {
632: struct session_group *sg;
633: struct session *s;
634:
1.72 nicm 635: if ((sg = session_group_contains(target)) == NULL)
1.11 nicm 636: return;
637:
638: TAILQ_FOREACH(s, &sg->sessions, gentry) {
639: if (s != target)
640: session_group_synchronize1(target, s);
641: }
642: }
643:
644: /*
645: * Synchronize a session with a target session. This means destroying all
646: * winlinks then recreating them, then updating the current window, last window
647: * stack and alerts.
648: */
1.64 nicm 649: static void
1.11 nicm 650: session_group_synchronize1(struct session *target, struct session *s)
651: {
652: struct winlinks old_windows, *ww;
653: struct winlink_stack old_lastw;
654: struct winlink *wl, *wl2;
655:
656: /* Don't do anything if the session is empty (it'll be destroyed). */
657: ww = &target->windows;
658: if (RB_EMPTY(ww))
659: return;
660:
661: /* If the current window has vanished, move to the next now. */
1.16 nicm 662: if (s->curw != NULL &&
663: winlink_find_by_index(ww, s->curw->idx) == NULL &&
664: session_last(s) != 0 && session_previous(s, 0) != 0)
665: session_next(s, 0);
1.11 nicm 666:
667: /* Save the old pointer and reset it. */
668: memcpy(&old_windows, &s->windows, sizeof old_windows);
669: RB_INIT(&s->windows);
670:
671: /* Link all the windows from the target. */
1.18 nicm 672: RB_FOREACH(wl, winlinks, ww) {
1.30 nicm 673: wl2 = winlink_add(&s->windows, wl->idx);
1.70 nicm 674: wl2->session = s;
1.30 nicm 675: winlink_set_window(wl2, wl->window);
1.68 nicm 676: notify_session_window("window-linked", s, wl2->window);
1.18 nicm 677: wl2->flags |= wl->flags & WINLINK_ALERTFLAGS;
678: }
1.11 nicm 679:
680: /* Fix up the current window. */
681: if (s->curw != NULL)
682: s->curw = winlink_find_by_index(&s->windows, s->curw->idx);
683: else
684: s->curw = winlink_find_by_index(&s->windows, target->curw->idx);
685:
686: /* Fix up the last window stack. */
687: memcpy(&old_lastw, &s->lastw, sizeof old_lastw);
688: TAILQ_INIT(&s->lastw);
689: TAILQ_FOREACH(wl, &old_lastw, sentry) {
690: wl2 = winlink_find_by_index(&s->windows, wl->idx);
691: if (wl2 != NULL)
692: TAILQ_INSERT_TAIL(&s->lastw, wl2, sentry);
693: }
694:
695: /* Then free the old winlinks list. */
696: while (!RB_EMPTY(&old_windows)) {
697: wl = RB_ROOT(&old_windows);
1.45 nicm 698: wl2 = winlink_find_by_window_id(&s->windows, wl->window->id);
699: if (wl2 == NULL)
1.68 nicm 700: notify_session_window("window-unlinked", s, wl->window);
1.13 nicm 701: winlink_remove(&old_windows, wl);
1.11 nicm 702: }
1.34 nicm 703: }
704:
705: /* Renumber the windows across winlinks attached to a specific session. */
706: void
707: session_renumber_windows(struct session *s)
708: {
709: struct winlink *wl, *wl1, *wl_new;
710: struct winlinks old_wins;
711: struct winlink_stack old_lastw;
712: int new_idx, new_curw_idx;
713:
714: /* Save and replace old window list. */
715: memcpy(&old_wins, &s->windows, sizeof old_wins);
716: RB_INIT(&s->windows);
717:
718: /* Start renumbering from the base-index if it's set. */
1.56 nicm 719: new_idx = options_get_number(s->options, "base-index");
1.34 nicm 720: new_curw_idx = 0;
721:
722: /* Go through the winlinks and assign new indexes. */
723: RB_FOREACH(wl, winlinks, &old_wins) {
724: wl_new = winlink_add(&s->windows, new_idx);
1.70 nicm 725: wl_new->session = s;
1.34 nicm 726: winlink_set_window(wl_new, wl->window);
727: wl_new->flags |= wl->flags & WINLINK_ALERTFLAGS;
728:
729: if (wl == s->curw)
730: new_curw_idx = wl_new->idx;
731:
732: new_idx++;
733: }
734:
735: /* Fix the stack of last windows now. */
736: memcpy(&old_lastw, &s->lastw, sizeof old_lastw);
737: TAILQ_INIT(&s->lastw);
738: TAILQ_FOREACH(wl, &old_lastw, sentry) {
1.40 nicm 739: wl_new = winlink_find_by_window(&s->windows, wl->window);
1.34 nicm 740: if (wl_new != NULL)
741: TAILQ_INSERT_TAIL(&s->lastw, wl_new, sentry);
742: }
743:
744: /* Set the current window. */
745: s->curw = winlink_find_by_index(&s->windows, new_curw_idx);
746:
747: /* Free the old winlinks (reducing window references too). */
748: RB_FOREACH_SAFE(wl, winlinks, &old_wins, wl1)
749: winlink_remove(&old_wins, wl);
1.1 nicm 750: }
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