Annotation of src/usr.bin/tmux/session.c, Revision 1.71
1.71 ! nicm 1: /* $OpenBSD: session.c,v 1.70 2016/10/19 09:22:07 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>
1.10 nicm 26: #include <time.h>
1.1 nicm 27:
28: #include "tmux.h"
29:
1.63 nicm 30: struct sessions sessions;
31: static u_int next_session_id;
32: struct session_groups session_groups;
1.1 nicm 33:
1.63 nicm 34: static void session_free(int, short, void *);
1.50 nicm 35:
1.63 nicm 36: static void session_lock_timer(int, short, void *);
1.52 nicm 37:
1.63 nicm 38: static struct winlink *session_next_alert(struct winlink *);
39: static struct winlink *session_previous_alert(struct winlink *);
1.21 nicm 40:
1.64 nicm 41: static void session_group_remove(struct session *);
42: static u_int session_group_count(struct session_group *);
43: static void session_group_synchronize1(struct session *, struct session *);
44:
1.25 nicm 45: RB_GENERATE(sessions, session, entry, session_cmp);
46:
47: int
48: session_cmp(struct session *s1, struct session *s2)
49: {
50: return (strcmp(s1->name, s2->name));
51: }
52:
1.21 nicm 53: /*
54: * Find if session is still alive. This is true if it is still on the global
55: * sessions list.
56: */
57: int
58: session_alive(struct session *s)
59: {
1.25 nicm 60: struct session *s_loop;
1.21 nicm 61:
1.25 nicm 62: RB_FOREACH(s_loop, sessions, &sessions) {
63: if (s_loop == s)
64: return (1);
65: }
66: return (0);
1.21 nicm 67: }
1.1 nicm 68:
69: /* Find session by name. */
70: struct session *
71: session_find(const char *name)
72: {
1.25 nicm 73: struct session s;
74:
75: s.name = (char *) name;
76: return (RB_FIND(sessions, &sessions, &s));
1.48 nicm 77: }
78:
79: /* Find session by id parsed from a string. */
80: struct session *
81: session_find_by_id_str(const char *s)
82: {
83: const char *errstr;
84: u_int id;
85:
86: if (*s != '$')
87: return (NULL);
88:
89: id = strtonum(s + 1, 0, UINT_MAX, &errstr);
90: if (errstr != NULL)
91: return (NULL);
92: return (session_find_by_id(id));
1.25 nicm 93: }
94:
1.38 nicm 95: /* Find session by id. */
1.25 nicm 96: struct session *
1.38 nicm 97: session_find_by_id(u_int id)
1.25 nicm 98: {
1.1 nicm 99: struct session *s;
100:
1.25 nicm 101: RB_FOREACH(s, sessions, &sessions) {
1.38 nicm 102: if (s->id == id)
1.1 nicm 103: return (s);
104: }
105: return (NULL);
106: }
107:
108: /* Create a new session. */
109: struct session *
1.44 nicm 110: session_create(const char *name, int argc, char **argv, const char *path,
1.58 nicm 111: const char *cwd, struct environ *env, struct termios *tio, int idx,
112: u_int sx, u_int sy, char **cause)
1.1 nicm 113: {
114: struct session *s;
1.44 nicm 115: struct winlink *wl;
1.1 nicm 116:
1.52 nicm 117: s = xcalloc(1, sizeof *s);
1.50 nicm 118: s->references = 1;
1.1 nicm 119: s->flags = 0;
1.7 nicm 120:
1.58 nicm 121: s->cwd = xstrdup(cwd);
1.19 nicm 122:
1.1 nicm 123: s->curw = NULL;
1.11 nicm 124: TAILQ_INIT(&s->lastw);
1.1 nicm 125: RB_INIT(&s->windows);
1.7 nicm 126:
1.57 nicm 127: s->environ = environ_create();
1.3 nicm 128: if (env != NULL)
1.57 nicm 129: environ_copy(env, s->environ);
1.61 nicm 130:
1.56 nicm 131: s->options = options_create(global_s_options);
1.61 nicm 132: s->hooks = hooks_create(global_hooks);
1.71 ! nicm 133:
! 134: status_update_saved(s);
1.8 nicm 135:
136: s->tio = NULL;
137: if (tio != NULL) {
138: s->tio = xmalloc(sizeof *s->tio);
139: memcpy(s->tio, tio, sizeof *s->tio);
140: }
1.1 nicm 141:
142: s->sx = sx;
143: s->sy = sy;
144:
1.32 nicm 145: if (name != NULL) {
1.1 nicm 146: s->name = xstrdup(name);
1.38 nicm 147: s->id = next_session_id++;
1.32 nicm 148: } else {
149: s->name = NULL;
150: do {
1.38 nicm 151: s->id = next_session_id++;
1.46 nicm 152: free(s->name);
1.38 nicm 153: xasprintf(&s->name, "%u", s->id);
1.32 nicm 154: } while (RB_FIND(sessions, &sessions, s) != NULL);
155: }
1.25 nicm 156: RB_INSERT(sessions, &sessions, s);
1.15 nicm 157:
1.59 nicm 158: log_debug("new session %s $%u", s->name, s->id);
159:
1.52 nicm 160: if (gettimeofday(&s->creation_time, NULL) != 0)
161: fatal("gettimeofday failed");
162: session_update_activity(s, &s->creation_time);
163:
1.44 nicm 164: if (argc >= 0) {
165: wl = session_new(s, NULL, argc, argv, path, cwd, idx, cause);
166: if (wl == NULL) {
1.11 nicm 167: session_destroy(s);
168: return (NULL);
169: }
170: session_select(s, RB_ROOT(&s->windows)->idx);
1.1 nicm 171: }
172:
173: log_debug("session %s created", s->name);
174:
175: return (s);
176: }
177:
1.50 nicm 178: /* Remove a reference from a session. */
179: void
180: session_unref(struct session *s)
181: {
182: log_debug("session %s has %d references", s->name, s->references);
183:
184: s->references--;
185: if (s->references == 0)
186: event_once(-1, EV_TIMEOUT, session_free, s, NULL);
187: }
188:
189: /* Free session. */
1.63 nicm 190: static void
1.60 nicm 191: session_free(__unused int fd, __unused short events, void *arg)
1.50 nicm 192: {
193: struct session *s = arg;
194:
1.55 nicm 195: log_debug("session %s freed (%d references)", s->name, s->references);
1.50 nicm 196:
1.53 nicm 197: if (s->references == 0) {
1.57 nicm 198: environ_free(s->environ);
1.61 nicm 199:
1.56 nicm 200: options_free(s->options);
1.61 nicm 201: hooks_free(s->hooks);
1.56 nicm 202:
1.53 nicm 203: free(s->name);
1.50 nicm 204: free(s);
1.53 nicm 205: }
1.50 nicm 206: }
207:
1.1 nicm 208: /* Destroy a session. */
209: void
210: session_destroy(struct session *s)
211: {
1.33 nicm 212: struct winlink *wl;
1.39 nicm 213:
1.1 nicm 214: log_debug("session %s destroyed", s->name);
1.66 nicm 215: s->curw = NULL;
1.1 nicm 216:
1.25 nicm 217: RB_REMOVE(sessions, &sessions, s);
1.68 nicm 218: notify_session("session-closed", s);
1.1 nicm 219:
1.36 nicm 220: free(s->tio);
1.8 nicm 221:
1.52 nicm 222: if (event_initialized(&s->lock_timer))
223: event_del(&s->lock_timer);
224:
1.11 nicm 225: session_group_remove(s);
1.1 nicm 226:
1.11 nicm 227: while (!TAILQ_EMPTY(&s->lastw))
228: winlink_stack_remove(&s->lastw, TAILQ_FIRST(&s->lastw));
1.33 nicm 229: while (!RB_EMPTY(&s->windows)) {
230: wl = RB_ROOT(&s->windows);
1.68 nicm 231: notify_session_window("window-unlinked", s, wl->window);
1.33 nicm 232: winlink_remove(&s->windows, wl);
233: }
1.1 nicm 234:
1.58 nicm 235: free((void *)s->cwd);
1.15 nicm 236:
1.50 nicm 237: session_unref(s);
1.31 nicm 238: }
239:
1.42 nicm 240: /* Check a session name is valid: not empty and no colons or periods. */
1.31 nicm 241: int
242: session_check_name(const char *name)
243: {
1.42 nicm 244: return (*name != '\0' && name[strcspn(name, ":.")] == '\0');
1.27 nicm 245: }
246:
1.52 nicm 247: /* Lock session if it has timed out. */
1.63 nicm 248: static void
1.60 nicm 249: session_lock_timer(__unused int fd, __unused short events, void *arg)
1.52 nicm 250: {
251: struct session *s = arg;
252:
253: if (s->flags & SESSION_UNATTACHED)
254: return;
255:
256: log_debug("session %s locked, activity time %lld", s->name,
257: (long long)s->activity_time.tv_sec);
258:
259: server_lock_session(s);
260: recalculate_sizes();
261: }
262:
1.51 nicm 263: /* Update activity time. */
1.27 nicm 264: void
1.51 nicm 265: session_update_activity(struct session *s, struct timeval *from)
1.27 nicm 266: {
1.51 nicm 267: struct timeval *last = &s->last_activity_time;
1.52 nicm 268: struct timeval tv;
1.51 nicm 269:
270: memcpy(last, &s->activity_time, sizeof *last);
271: if (from == NULL)
272: gettimeofday(&s->activity_time, NULL);
273: else
274: memcpy(&s->activity_time, from, sizeof s->activity_time);
1.59 nicm 275:
276: log_debug("session %s activity %lld.%06d (last %lld.%06d)", s->name,
277: (long long)s->activity_time.tv_sec, (int)s->activity_time.tv_usec,
278: (long long)last->tv_sec, (int)last->tv_usec);
1.52 nicm 279:
280: if (evtimer_initialized(&s->lock_timer))
281: evtimer_del(&s->lock_timer);
282: else
283: evtimer_set(&s->lock_timer, session_lock_timer, s);
284:
285: if (~s->flags & SESSION_UNATTACHED) {
286: timerclear(&tv);
1.56 nicm 287: tv.tv_sec = options_get_number(s->options, "lock-after-time");
1.52 nicm 288: if (tv.tv_sec != 0)
289: evtimer_add(&s->lock_timer, &tv);
290: }
1.20 nicm 291: }
292:
293: /* Find the next usable session. */
294: struct session *
295: session_next_session(struct session *s)
296: {
297: struct session *s2;
298:
1.25 nicm 299: if (RB_EMPTY(&sessions) || !session_alive(s))
1.20 nicm 300: return (NULL);
301:
1.29 nicm 302: s2 = RB_NEXT(sessions, &sessions, s);
1.28 nicm 303: if (s2 == NULL)
304: s2 = RB_MIN(sessions, &sessions);
1.25 nicm 305: if (s2 == s)
306: return (NULL);
1.20 nicm 307: return (s2);
308: }
309:
310: /* Find the previous usable session. */
311: struct session *
312: session_previous_session(struct session *s)
313: {
314: struct session *s2;
315:
1.25 nicm 316: if (RB_EMPTY(&sessions) || !session_alive(s))
1.20 nicm 317: return (NULL);
318:
1.29 nicm 319: s2 = RB_PREV(sessions, &sessions, s);
1.28 nicm 320: if (s2 == NULL)
321: s2 = RB_MAX(sessions, &sessions);
1.25 nicm 322: if (s2 == s)
323: return (NULL);
1.20 nicm 324: return (s2);
1.1 nicm 325: }
326:
327: /* Create a new window on a session. */
328: struct winlink *
1.44 nicm 329: session_new(struct session *s, const char *name, int argc, char **argv,
1.58 nicm 330: const char *path, const char *cwd, int idx, char **cause)
1.1 nicm 331: {
332: struct window *w;
1.30 nicm 333: struct winlink *wl;
1.57 nicm 334: struct environ *env;
1.6 nicm 335: const char *shell;
1.1 nicm 336: u_int hlimit;
337:
1.30 nicm 338: if ((wl = winlink_add(&s->windows, idx)) == NULL) {
339: xasprintf(cause, "index in use: %d", idx);
340: return (NULL);
341: }
1.70 nicm 342: wl->session = s;
1.30 nicm 343:
1.57 nicm 344: env = environ_create();
345: environ_copy(global_environ, env);
346: environ_copy(s->environ, env);
347: server_fill_environ(s, env);
1.1 nicm 348:
1.56 nicm 349: shell = options_get_string(s->options, "default-shell");
1.6 nicm 350: if (*shell == '\0' || areshell(shell))
351: shell = _PATH_BSHELL;
352:
1.56 nicm 353: hlimit = options_get_number(s->options, "history-limit");
1.67 nicm 354: w = window_create_spawn(name, argc, argv, path, shell, cwd, env, s->tio,
1.44 nicm 355: s->sx, s->sy, hlimit, cause);
1.3 nicm 356: if (w == NULL) {
1.30 nicm 357: winlink_remove(&s->windows, wl);
1.57 nicm 358: environ_free(env);
1.1 nicm 359: return (NULL);
1.3 nicm 360: }
1.30 nicm 361: winlink_set_window(wl, w);
1.68 nicm 362: notify_session_window("window-linked", s, w);
1.57 nicm 363: environ_free(env);
1.1 nicm 364:
1.30 nicm 365: session_group_synchronize_from(s);
366: return (wl);
1.1 nicm 367: }
368:
369: /* Attach a window to a session. */
370: struct winlink *
371: session_attach(struct session *s, struct window *w, int idx, char **cause)
372: {
373: struct winlink *wl;
374:
1.30 nicm 375: if ((wl = winlink_add(&s->windows, idx)) == NULL) {
1.1 nicm 376: xasprintf(cause, "index in use: %d", idx);
1.30 nicm 377: return (NULL);
378: }
1.70 nicm 379: wl->session = s;
1.30 nicm 380: winlink_set_window(wl, w);
1.68 nicm 381: notify_session_window("window-linked", s, w);
1.30 nicm 382:
1.11 nicm 383: session_group_synchronize_from(s);
1.1 nicm 384: return (wl);
385: }
386:
387: /* Detach a window from a session. */
388: int
389: session_detach(struct session *s, struct winlink *wl)
390: {
391: if (s->curw == wl &&
1.66 nicm 392: session_last(s) != 0 &&
393: session_previous(s, 0) != 0)
1.1 nicm 394: session_next(s, 0);
395:
1.18 nicm 396: wl->flags &= ~WINLINK_ALERTFLAGS;
1.68 nicm 397: notify_session_window("window-unlinked", s, wl->window);
1.1 nicm 398: winlink_stack_remove(&s->lastw, wl);
399: winlink_remove(&s->windows, wl);
1.66 nicm 400:
1.11 nicm 401: session_group_synchronize_from(s);
1.66 nicm 402:
1.1 nicm 403: if (RB_EMPTY(&s->windows)) {
404: session_destroy(s);
405: return (1);
406: }
407: return (0);
408: }
409:
410: /* Return if session has window. */
1.47 nicm 411: int
1.1 nicm 412: session_has(struct session *s, struct window *w)
413: {
414: struct winlink *wl;
415:
1.70 nicm 416: TAILQ_FOREACH(wl, &w->winlinks, wentry) {
417: if (wl->session == s)
1.47 nicm 418: return (1);
1.1 nicm 419: }
1.47 nicm 420: return (0);
1.49 nicm 421: }
422:
423: /*
424: * Return 1 if a window is linked outside this session (not including session
425: * groups). The window must be in this session!
426: */
427: int
428: session_is_linked(struct session *s, struct window *w)
429: {
430: struct session_group *sg;
431:
432: if ((sg = session_group_find(s)) != NULL)
433: return (w->references != session_group_count(sg));
434: return (w->references != 1);
1.1 nicm 435: }
436:
1.63 nicm 437: static struct winlink *
1.18 nicm 438: session_next_alert(struct winlink *wl)
1.1 nicm 439: {
440: while (wl != NULL) {
1.18 nicm 441: if (wl->flags & WINLINK_ALERTFLAGS)
1.1 nicm 442: break;
1.14 nicm 443: wl = winlink_next(wl);
1.1 nicm 444: }
445: return (wl);
446: }
447:
448: /* Move session to next window. */
449: int
1.17 nicm 450: session_next(struct session *s, int alert)
1.1 nicm 451: {
452: struct winlink *wl;
453:
454: if (s->curw == NULL)
455: return (-1);
456:
1.14 nicm 457: wl = winlink_next(s->curw);
1.17 nicm 458: if (alert)
1.18 nicm 459: wl = session_next_alert(wl);
1.1 nicm 460: if (wl == NULL) {
461: wl = RB_MIN(winlinks, &s->windows);
1.18 nicm 462: if (alert && ((wl = session_next_alert(wl)) == NULL))
1.1 nicm 463: return (-1);
464: }
1.37 nicm 465: return (session_set_current(s, wl));
1.1 nicm 466: }
467:
1.63 nicm 468: static struct winlink *
1.18 nicm 469: session_previous_alert(struct winlink *wl)
1.1 nicm 470: {
471: while (wl != NULL) {
1.18 nicm 472: if (wl->flags & WINLINK_ALERTFLAGS)
1.1 nicm 473: break;
1.14 nicm 474: wl = winlink_previous(wl);
1.1 nicm 475: }
476: return (wl);
477: }
478:
479: /* Move session to previous window. */
480: int
1.17 nicm 481: session_previous(struct session *s, int alert)
1.1 nicm 482: {
483: struct winlink *wl;
484:
485: if (s->curw == NULL)
486: return (-1);
487:
1.14 nicm 488: wl = winlink_previous(s->curw);
1.17 nicm 489: if (alert)
1.18 nicm 490: wl = session_previous_alert(wl);
1.1 nicm 491: if (wl == NULL) {
492: wl = RB_MAX(winlinks, &s->windows);
1.18 nicm 493: if (alert && (wl = session_previous_alert(wl)) == NULL)
1.1 nicm 494: return (-1);
495: }
1.37 nicm 496: return (session_set_current(s, wl));
1.1 nicm 497: }
498:
499: /* Move session to specific window. */
500: int
501: session_select(struct session *s, int idx)
502: {
503: struct winlink *wl;
504:
505: wl = winlink_find_by_index(&s->windows, idx);
1.37 nicm 506: return (session_set_current(s, wl));
1.1 nicm 507: }
508:
509: /* Move session to last used window. */
510: int
511: session_last(struct session *s)
512: {
513: struct winlink *wl;
514:
1.11 nicm 515: wl = TAILQ_FIRST(&s->lastw);
1.37 nicm 516: if (wl == NULL)
517: return (-1);
518: if (wl == s->curw)
519: return (1);
520:
521: return (session_set_current(s, wl));
522: }
523:
524: /* Set current winlink to wl .*/
525: int
526: session_set_current(struct session *s, struct winlink *wl)
527: {
1.1 nicm 528: if (wl == NULL)
529: return (-1);
530: if (wl == s->curw)
531: return (1);
532:
533: winlink_stack_remove(&s->lastw, wl);
534: winlink_stack_push(&s->lastw, s->curw);
535: s->curw = wl;
1.35 nicm 536: winlink_clear_flags(wl);
1.54 nicm 537: window_update_activity(wl->window);
1.1 nicm 538: return (0);
1.11 nicm 539: }
540:
541: /* Find the session group containing a session. */
542: struct session_group *
543: session_group_find(struct session *target)
544: {
545: struct session_group *sg;
546: struct session *s;
547:
548: TAILQ_FOREACH(sg, &session_groups, entry) {
549: TAILQ_FOREACH(s, &sg->sessions, gentry) {
550: if (s == target)
551: return (sg);
552: }
553: }
554: return (NULL);
555: }
556:
557: /* Find session group index. */
558: u_int
559: session_group_index(struct session_group *sg)
560: {
561: struct session_group *sg2;
562: u_int i;
563:
564: i = 0;
565: TAILQ_FOREACH(sg2, &session_groups, entry) {
566: if (sg == sg2)
567: return (i);
568: i++;
569: }
570:
571: fatalx("session group not found");
572: }
573:
574: /*
575: * Add a session to the session group containing target, creating it if
1.15 nicm 576: * necessary.
1.11 nicm 577: */
578: void
579: session_group_add(struct session *target, struct session *s)
580: {
581: struct session_group *sg;
582:
583: if ((sg = session_group_find(target)) == NULL) {
584: sg = xmalloc(sizeof *sg);
585: TAILQ_INSERT_TAIL(&session_groups, sg, entry);
586: TAILQ_INIT(&sg->sessions);
587: TAILQ_INSERT_TAIL(&sg->sessions, target, gentry);
588: }
589: TAILQ_INSERT_TAIL(&sg->sessions, s, gentry);
590: }
591:
592: /* Remove a session from its group and destroy the group if empty. */
1.64 nicm 593: static void
1.11 nicm 594: session_group_remove(struct session *s)
595: {
596: struct session_group *sg;
597:
598: if ((sg = session_group_find(s)) == NULL)
599: return;
600: TAILQ_REMOVE(&sg->sessions, s, gentry);
601: if (TAILQ_NEXT(TAILQ_FIRST(&sg->sessions), gentry) == NULL)
602: TAILQ_REMOVE(&sg->sessions, TAILQ_FIRST(&sg->sessions), gentry);
603: if (TAILQ_EMPTY(&sg->sessions)) {
604: TAILQ_REMOVE(&session_groups, sg, entry);
1.36 nicm 605: free(sg);
1.11 nicm 606: }
607: }
608:
1.45 nicm 609: /* Count number of sessions in session group. */
1.64 nicm 610: static u_int
1.45 nicm 611: session_group_count(struct session_group *sg)
612: {
613: struct session *s;
614: u_int n;
615:
616: n = 0;
617: TAILQ_FOREACH(s, &sg->sessions, gentry)
618: n++;
619: return (n);
620: }
621:
1.11 nicm 622: /* Synchronize a session to its session group. */
623: void
624: session_group_synchronize_to(struct session *s)
625: {
626: struct session_group *sg;
627: struct session *target;
628:
629: if ((sg = session_group_find(s)) == NULL)
630: return;
631:
632: target = NULL;
633: TAILQ_FOREACH(target, &sg->sessions, gentry) {
634: if (target != s)
635: break;
636: }
637: session_group_synchronize1(target, s);
638: }
639:
640: /* Synchronize a session group to a session. */
641: void
642: session_group_synchronize_from(struct session *target)
643: {
644: struct session_group *sg;
645: struct session *s;
646:
647: if ((sg = session_group_find(target)) == NULL)
648: return;
649:
650: TAILQ_FOREACH(s, &sg->sessions, gentry) {
651: if (s != target)
652: session_group_synchronize1(target, s);
653: }
654: }
655:
656: /*
657: * Synchronize a session with a target session. This means destroying all
658: * winlinks then recreating them, then updating the current window, last window
659: * stack and alerts.
660: */
1.64 nicm 661: static void
1.11 nicm 662: session_group_synchronize1(struct session *target, struct session *s)
663: {
664: struct winlinks old_windows, *ww;
665: struct winlink_stack old_lastw;
666: struct winlink *wl, *wl2;
667:
668: /* Don't do anything if the session is empty (it'll be destroyed). */
669: ww = &target->windows;
670: if (RB_EMPTY(ww))
671: return;
672:
673: /* If the current window has vanished, move to the next now. */
1.16 nicm 674: if (s->curw != NULL &&
675: winlink_find_by_index(ww, s->curw->idx) == NULL &&
676: session_last(s) != 0 && session_previous(s, 0) != 0)
677: session_next(s, 0);
1.11 nicm 678:
679: /* Save the old pointer and reset it. */
680: memcpy(&old_windows, &s->windows, sizeof old_windows);
681: RB_INIT(&s->windows);
682:
683: /* Link all the windows from the target. */
1.18 nicm 684: RB_FOREACH(wl, winlinks, ww) {
1.30 nicm 685: wl2 = winlink_add(&s->windows, wl->idx);
1.70 nicm 686: wl2->session = s;
1.30 nicm 687: winlink_set_window(wl2, wl->window);
1.68 nicm 688: notify_session_window("window-linked", s, wl2->window);
1.18 nicm 689: wl2->flags |= wl->flags & WINLINK_ALERTFLAGS;
690: }
1.11 nicm 691:
692: /* Fix up the current window. */
693: if (s->curw != NULL)
694: s->curw = winlink_find_by_index(&s->windows, s->curw->idx);
695: else
696: s->curw = winlink_find_by_index(&s->windows, target->curw->idx);
697:
698: /* Fix up the last window stack. */
699: memcpy(&old_lastw, &s->lastw, sizeof old_lastw);
700: TAILQ_INIT(&s->lastw);
701: TAILQ_FOREACH(wl, &old_lastw, sentry) {
702: wl2 = winlink_find_by_index(&s->windows, wl->idx);
703: if (wl2 != NULL)
704: TAILQ_INSERT_TAIL(&s->lastw, wl2, sentry);
705: }
706:
707: /* Then free the old winlinks list. */
708: while (!RB_EMPTY(&old_windows)) {
709: wl = RB_ROOT(&old_windows);
1.45 nicm 710: wl2 = winlink_find_by_window_id(&s->windows, wl->window->id);
711: if (wl2 == NULL)
1.68 nicm 712: notify_session_window("window-unlinked", s, wl->window);
1.13 nicm 713: winlink_remove(&old_windows, wl);
1.11 nicm 714: }
1.34 nicm 715: }
716:
717: /* Renumber the windows across winlinks attached to a specific session. */
718: void
719: session_renumber_windows(struct session *s)
720: {
721: struct winlink *wl, *wl1, *wl_new;
722: struct winlinks old_wins;
723: struct winlink_stack old_lastw;
724: int new_idx, new_curw_idx;
725:
726: /* Save and replace old window list. */
727: memcpy(&old_wins, &s->windows, sizeof old_wins);
728: RB_INIT(&s->windows);
729:
730: /* Start renumbering from the base-index if it's set. */
1.56 nicm 731: new_idx = options_get_number(s->options, "base-index");
1.34 nicm 732: new_curw_idx = 0;
733:
734: /* Go through the winlinks and assign new indexes. */
735: RB_FOREACH(wl, winlinks, &old_wins) {
736: wl_new = winlink_add(&s->windows, new_idx);
1.70 nicm 737: wl_new->session = s;
1.34 nicm 738: winlink_set_window(wl_new, wl->window);
739: wl_new->flags |= wl->flags & WINLINK_ALERTFLAGS;
740:
741: if (wl == s->curw)
742: new_curw_idx = wl_new->idx;
743:
744: new_idx++;
745: }
746:
747: /* Fix the stack of last windows now. */
748: memcpy(&old_lastw, &s->lastw, sizeof old_lastw);
749: TAILQ_INIT(&s->lastw);
750: TAILQ_FOREACH(wl, &old_lastw, sentry) {
1.40 nicm 751: wl_new = winlink_find_by_window(&s->windows, wl->window);
1.34 nicm 752: if (wl_new != NULL)
753: TAILQ_INSERT_TAIL(&s->lastw, wl_new, sentry);
754: }
755:
756: /* Set the current window. */
757: s->curw = winlink_find_by_index(&s->windows, new_curw_idx);
758:
759: /* Free the old winlinks (reducing window references too). */
760: RB_FOREACH_SAFE(wl, winlinks, &old_wins, wl1)
761: winlink_remove(&old_wins, wl);
1.1 nicm 762: }
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