Annotation of src/usr.bin/tmux/session.c, Revision 1.84
1.84 ! nicm 1: /* $OpenBSD: session.c,v 1.83 2019/03/16 17:14:07 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;
1.80 nicm 32: struct session_groups session_groups = RB_INITIALIZER(&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 *);
1.72 nicm 42: static void session_group_synchronize1(struct session *, struct session *);
43:
1.25 nicm 44: int
45: session_cmp(struct session *s1, struct session *s2)
46: {
47: return (strcmp(s1->name, s2->name));
48: }
1.80 nicm 49: RB_GENERATE(sessions, session, entry, session_cmp);
1.25 nicm 50:
1.80 nicm 51: static int
1.72 nicm 52: session_group_cmp(struct session_group *s1, struct session_group *s2)
53: {
54: return (strcmp(s1->name, s2->name));
55: }
1.80 nicm 56: RB_GENERATE_STATIC(session_groups, session_group, entry, session_group_cmp);
1.72 nicm 57:
1.21 nicm 58: /*
59: * Find if session is still alive. This is true if it is still on the global
60: * sessions list.
61: */
62: int
63: session_alive(struct session *s)
64: {
1.25 nicm 65: struct session *s_loop;
1.21 nicm 66:
1.25 nicm 67: RB_FOREACH(s_loop, sessions, &sessions) {
68: if (s_loop == s)
69: return (1);
70: }
71: return (0);
1.21 nicm 72: }
1.1 nicm 73:
74: /* Find session by name. */
75: struct session *
76: session_find(const char *name)
77: {
1.25 nicm 78: struct session s;
79:
80: s.name = (char *) name;
81: return (RB_FIND(sessions, &sessions, &s));
1.48 nicm 82: }
83:
84: /* Find session by id parsed from a string. */
85: struct session *
86: session_find_by_id_str(const char *s)
87: {
88: const char *errstr;
89: u_int id;
90:
91: if (*s != '$')
92: return (NULL);
93:
94: id = strtonum(s + 1, 0, UINT_MAX, &errstr);
95: if (errstr != NULL)
96: return (NULL);
97: return (session_find_by_id(id));
1.25 nicm 98: }
99:
1.38 nicm 100: /* Find session by id. */
1.25 nicm 101: struct session *
1.38 nicm 102: session_find_by_id(u_int id)
1.25 nicm 103: {
1.1 nicm 104: struct session *s;
105:
1.25 nicm 106: RB_FOREACH(s, sessions, &sessions) {
1.38 nicm 107: if (s->id == id)
1.1 nicm 108: return (s);
109: }
110: return (NULL);
111: }
112:
113: /* Create a new session. */
114: struct session *
1.84 ! nicm 115: session_create(const char *prefix, const char *name, const char *cwd,
! 116: struct environ *env, struct options *oo, struct termios *tio)
1.1 nicm 117: {
118: struct session *s;
119:
1.52 nicm 120: s = xcalloc(1, sizeof *s);
1.50 nicm 121: s->references = 1;
1.1 nicm 122: s->flags = 0;
1.7 nicm 123:
1.58 nicm 124: s->cwd = xstrdup(cwd);
1.19 nicm 125:
1.1 nicm 126: s->curw = NULL;
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;
1.61 nicm 132: s->hooks = hooks_create(global_hooks);
1.71 nicm 133:
1.83 nicm 134: status_update_cache(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:
1.32 nicm 142: if (name != NULL) {
1.1 nicm 143: s->name = xstrdup(name);
1.38 nicm 144: s->id = next_session_id++;
1.32 nicm 145: } else {
146: s->name = NULL;
147: do {
1.38 nicm 148: s->id = next_session_id++;
1.46 nicm 149: free(s->name);
1.72 nicm 150: if (prefix != NULL)
151: xasprintf(&s->name, "%s-%u", prefix, s->id);
152: else
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:
1.1 nicm 164: return (s);
165: }
166:
1.75 nicm 167: /* Add a reference to a session. */
168: void
169: session_add_ref(struct session *s, const char *from)
170: {
171: s->references++;
172: log_debug("%s: %s %s, now %d", __func__, s->name, from, s->references);
173: }
174:
1.50 nicm 175: /* Remove a reference from a session. */
176: void
1.75 nicm 177: session_remove_ref(struct session *s, const char *from)
1.50 nicm 178: {
1.75 nicm 179: s->references--;
180: log_debug("%s: %s %s, now %d", __func__, s->name, from, s->references);
1.50 nicm 181:
182: if (s->references == 0)
183: event_once(-1, EV_TIMEOUT, session_free, s, NULL);
184: }
185:
186: /* Free session. */
1.63 nicm 187: static void
1.60 nicm 188: session_free(__unused int fd, __unused short events, void *arg)
1.50 nicm 189: {
190: struct session *s = arg;
191:
1.55 nicm 192: log_debug("session %s freed (%d references)", s->name, s->references);
1.50 nicm 193:
1.53 nicm 194: if (s->references == 0) {
1.57 nicm 195: environ_free(s->environ);
1.61 nicm 196:
1.56 nicm 197: options_free(s->options);
1.61 nicm 198: hooks_free(s->hooks);
1.56 nicm 199:
1.53 nicm 200: free(s->name);
1.50 nicm 201: free(s);
1.53 nicm 202: }
1.50 nicm 203: }
204:
1.1 nicm 205: /* Destroy a session. */
206: void
1.84 ! nicm 207: session_destroy(struct session *s, int notify, const char *from)
1.1 nicm 208: {
1.33 nicm 209: struct winlink *wl;
1.39 nicm 210:
1.77 nicm 211: log_debug("session %s destroyed (%s)", s->name, from);
1.66 nicm 212: s->curw = NULL;
1.1 nicm 213:
1.25 nicm 214: RB_REMOVE(sessions, &sessions, s);
1.84 ! nicm 215: if (notify)
! 216: notify_session("session-closed", s);
1.1 nicm 217:
1.36 nicm 218: free(s->tio);
1.8 nicm 219:
1.52 nicm 220: if (event_initialized(&s->lock_timer))
221: event_del(&s->lock_timer);
222:
1.11 nicm 223: session_group_remove(s);
1.1 nicm 224:
1.11 nicm 225: while (!TAILQ_EMPTY(&s->lastw))
226: winlink_stack_remove(&s->lastw, TAILQ_FIRST(&s->lastw));
1.33 nicm 227: while (!RB_EMPTY(&s->windows)) {
228: wl = RB_ROOT(&s->windows);
1.68 nicm 229: notify_session_window("window-unlinked", s, wl->window);
1.33 nicm 230: winlink_remove(&s->windows, wl);
231: }
1.1 nicm 232:
1.58 nicm 233: free((void *)s->cwd);
1.15 nicm 234:
1.75 nicm 235: session_remove_ref(s, __func__);
1.31 nicm 236: }
237:
1.42 nicm 238: /* Check a session name is valid: not empty and no colons or periods. */
1.31 nicm 239: int
240: session_check_name(const char *name)
241: {
1.42 nicm 242: return (*name != '\0' && name[strcspn(name, ":.")] == '\0');
1.27 nicm 243: }
244:
1.52 nicm 245: /* Lock session if it has timed out. */
1.63 nicm 246: static void
1.60 nicm 247: session_lock_timer(__unused int fd, __unused short events, void *arg)
1.52 nicm 248: {
249: struct session *s = arg;
250:
1.81 nicm 251: if (s->attached == 0)
1.52 nicm 252: return;
253:
254: log_debug("session %s locked, activity time %lld", s->name,
255: (long long)s->activity_time.tv_sec);
256:
257: server_lock_session(s);
258: recalculate_sizes();
259: }
260:
1.51 nicm 261: /* Update activity time. */
1.27 nicm 262: void
1.51 nicm 263: session_update_activity(struct session *s, struct timeval *from)
1.27 nicm 264: {
1.51 nicm 265: struct timeval *last = &s->last_activity_time;
1.52 nicm 266: struct timeval tv;
1.51 nicm 267:
268: memcpy(last, &s->activity_time, sizeof *last);
269: if (from == NULL)
270: gettimeofday(&s->activity_time, NULL);
271: else
272: memcpy(&s->activity_time, from, sizeof s->activity_time);
1.59 nicm 273:
1.79 nicm 274: log_debug("session $%u %s activity %lld.%06d (last %lld.%06d)", s->id,
275: s->name, (long long)s->activity_time.tv_sec,
276: (int)s->activity_time.tv_usec, (long long)last->tv_sec,
277: (int)last->tv_usec);
1.52 nicm 278:
279: if (evtimer_initialized(&s->lock_timer))
280: evtimer_del(&s->lock_timer);
281: else
282: evtimer_set(&s->lock_timer, session_lock_timer, s);
283:
1.81 nicm 284: if (s->attached != 0) {
1.52 nicm 285: timerclear(&tv);
1.56 nicm 286: tv.tv_sec = options_get_number(s->options, "lock-after-time");
1.52 nicm 287: if (tv.tv_sec != 0)
288: evtimer_add(&s->lock_timer, &tv);
289: }
1.20 nicm 290: }
291:
292: /* Find the next usable session. */
293: struct session *
294: session_next_session(struct session *s)
295: {
296: struct session *s2;
297:
1.25 nicm 298: if (RB_EMPTY(&sessions) || !session_alive(s))
1.20 nicm 299: return (NULL);
300:
1.29 nicm 301: s2 = RB_NEXT(sessions, &sessions, s);
1.28 nicm 302: if (s2 == NULL)
303: s2 = RB_MIN(sessions, &sessions);
1.25 nicm 304: if (s2 == s)
305: return (NULL);
1.20 nicm 306: return (s2);
307: }
308:
309: /* Find the previous usable session. */
310: struct session *
311: session_previous_session(struct session *s)
312: {
313: struct session *s2;
314:
1.25 nicm 315: if (RB_EMPTY(&sessions) || !session_alive(s))
1.20 nicm 316: return (NULL);
317:
1.29 nicm 318: s2 = RB_PREV(sessions, &sessions, s);
1.28 nicm 319: if (s2 == NULL)
320: s2 = RB_MAX(sessions, &sessions);
1.25 nicm 321: if (s2 == s)
322: return (NULL);
1.20 nicm 323: return (s2);
1.1 nicm 324: }
325:
326: /* Attach a window to a session. */
327: struct winlink *
328: session_attach(struct session *s, struct window *w, int idx, char **cause)
329: {
330: struct winlink *wl;
331:
1.30 nicm 332: if ((wl = winlink_add(&s->windows, idx)) == NULL) {
1.1 nicm 333: xasprintf(cause, "index in use: %d", idx);
1.30 nicm 334: return (NULL);
335: }
1.70 nicm 336: wl->session = s;
1.30 nicm 337: winlink_set_window(wl, w);
1.68 nicm 338: notify_session_window("window-linked", s, w);
1.30 nicm 339:
1.11 nicm 340: session_group_synchronize_from(s);
1.1 nicm 341: return (wl);
342: }
343:
344: /* Detach a window from a session. */
345: int
346: session_detach(struct session *s, struct winlink *wl)
347: {
348: if (s->curw == wl &&
1.66 nicm 349: session_last(s) != 0 &&
350: session_previous(s, 0) != 0)
1.1 nicm 351: session_next(s, 0);
352:
1.18 nicm 353: wl->flags &= ~WINLINK_ALERTFLAGS;
1.68 nicm 354: notify_session_window("window-unlinked", s, wl->window);
1.1 nicm 355: winlink_stack_remove(&s->lastw, wl);
356: winlink_remove(&s->windows, wl);
1.66 nicm 357:
1.11 nicm 358: session_group_synchronize_from(s);
1.66 nicm 359:
1.1 nicm 360: if (RB_EMPTY(&s->windows)) {
1.84 ! nicm 361: session_destroy(s, 1, __func__);
1.1 nicm 362: return (1);
363: }
364: return (0);
365: }
366:
367: /* Return if session has window. */
1.47 nicm 368: int
1.1 nicm 369: session_has(struct session *s, struct window *w)
370: {
371: struct winlink *wl;
372:
1.70 nicm 373: TAILQ_FOREACH(wl, &w->winlinks, wentry) {
374: if (wl->session == s)
1.47 nicm 375: return (1);
1.1 nicm 376: }
1.47 nicm 377: return (0);
1.49 nicm 378: }
379:
380: /*
381: * Return 1 if a window is linked outside this session (not including session
382: * groups). The window must be in this session!
383: */
384: int
385: session_is_linked(struct session *s, struct window *w)
386: {
387: struct session_group *sg;
388:
1.72 nicm 389: if ((sg = session_group_contains(s)) != NULL)
1.49 nicm 390: return (w->references != session_group_count(sg));
391: return (w->references != 1);
1.1 nicm 392: }
393:
1.63 nicm 394: static struct winlink *
1.18 nicm 395: session_next_alert(struct winlink *wl)
1.1 nicm 396: {
397: while (wl != NULL) {
1.18 nicm 398: if (wl->flags & WINLINK_ALERTFLAGS)
1.1 nicm 399: break;
1.14 nicm 400: wl = winlink_next(wl);
1.1 nicm 401: }
402: return (wl);
403: }
404:
405: /* Move session to next window. */
406: int
1.17 nicm 407: session_next(struct session *s, int alert)
1.1 nicm 408: {
409: struct winlink *wl;
410:
411: if (s->curw == NULL)
412: return (-1);
413:
1.14 nicm 414: wl = winlink_next(s->curw);
1.17 nicm 415: if (alert)
1.18 nicm 416: wl = session_next_alert(wl);
1.1 nicm 417: if (wl == NULL) {
418: wl = RB_MIN(winlinks, &s->windows);
1.18 nicm 419: if (alert && ((wl = session_next_alert(wl)) == NULL))
1.1 nicm 420: return (-1);
421: }
1.37 nicm 422: return (session_set_current(s, wl));
1.1 nicm 423: }
424:
1.63 nicm 425: static struct winlink *
1.18 nicm 426: session_previous_alert(struct winlink *wl)
1.1 nicm 427: {
428: while (wl != NULL) {
1.18 nicm 429: if (wl->flags & WINLINK_ALERTFLAGS)
1.1 nicm 430: break;
1.14 nicm 431: wl = winlink_previous(wl);
1.1 nicm 432: }
433: return (wl);
434: }
435:
436: /* Move session to previous window. */
437: int
1.17 nicm 438: session_previous(struct session *s, int alert)
1.1 nicm 439: {
440: struct winlink *wl;
441:
442: if (s->curw == NULL)
443: return (-1);
444:
1.14 nicm 445: wl = winlink_previous(s->curw);
1.17 nicm 446: if (alert)
1.18 nicm 447: wl = session_previous_alert(wl);
1.1 nicm 448: if (wl == NULL) {
449: wl = RB_MAX(winlinks, &s->windows);
1.18 nicm 450: if (alert && (wl = session_previous_alert(wl)) == NULL)
1.1 nicm 451: return (-1);
452: }
1.37 nicm 453: return (session_set_current(s, wl));
1.1 nicm 454: }
455:
456: /* Move session to specific window. */
457: int
458: session_select(struct session *s, int idx)
459: {
460: struct winlink *wl;
461:
462: wl = winlink_find_by_index(&s->windows, idx);
1.37 nicm 463: return (session_set_current(s, wl));
1.1 nicm 464: }
465:
466: /* Move session to last used window. */
467: int
468: session_last(struct session *s)
469: {
470: struct winlink *wl;
471:
1.11 nicm 472: wl = TAILQ_FIRST(&s->lastw);
1.37 nicm 473: if (wl == NULL)
474: return (-1);
475: if (wl == s->curw)
476: return (1);
477:
478: return (session_set_current(s, wl));
479: }
480:
481: /* Set current winlink to wl .*/
482: int
483: session_set_current(struct session *s, struct winlink *wl)
484: {
1.1 nicm 485: if (wl == NULL)
486: return (-1);
487: if (wl == s->curw)
488: return (1);
489:
490: winlink_stack_remove(&s->lastw, wl);
491: winlink_stack_push(&s->lastw, s->curw);
492: s->curw = wl;
1.35 nicm 493: winlink_clear_flags(wl);
1.54 nicm 494: window_update_activity(wl->window);
1.82 nicm 495: tty_update_window_offset(wl->window);
1.76 nicm 496: notify_session("session-window-changed", s);
1.1 nicm 497: return (0);
1.11 nicm 498: }
499:
500: /* Find the session group containing a session. */
501: struct session_group *
1.72 nicm 502: session_group_contains(struct session *target)
1.11 nicm 503: {
504: struct session_group *sg;
505: struct session *s;
506:
1.72 nicm 507: RB_FOREACH(sg, session_groups, &session_groups) {
1.11 nicm 508: TAILQ_FOREACH(s, &sg->sessions, gentry) {
509: if (s == target)
510: return (sg);
511: }
512: }
513: return (NULL);
514: }
515:
1.72 nicm 516: /* Find session group by name. */
517: struct session_group *
518: session_group_find(const char *name)
1.11 nicm 519: {
1.72 nicm 520: struct session_group sg;
521:
522: sg.name = name;
523: return (RB_FIND(session_groups, &session_groups, &sg));
524: }
1.11 nicm 525:
1.72 nicm 526: /* Create a new session group. */
527: struct session_group *
528: session_group_new(const char *name)
529: {
530: struct session_group *sg;
531:
532: if ((sg = session_group_find(name)) != NULL)
533: return (sg);
534:
535: sg = xcalloc(1, sizeof *sg);
536: sg->name = xstrdup(name);
537: TAILQ_INIT(&sg->sessions);
1.11 nicm 538:
1.72 nicm 539: RB_INSERT(session_groups, &session_groups, sg);
540: return (sg);
1.11 nicm 541: }
542:
1.72 nicm 543: /* Add a session to a session group. */
1.11 nicm 544: void
1.72 nicm 545: session_group_add(struct session_group *sg, struct session *s)
1.11 nicm 546: {
1.72 nicm 547: if (session_group_contains(s) == NULL)
548: TAILQ_INSERT_TAIL(&sg->sessions, s, gentry);
1.11 nicm 549: }
550:
551: /* Remove a session from its group and destroy the group if empty. */
1.64 nicm 552: static void
1.11 nicm 553: session_group_remove(struct session *s)
554: {
555: struct session_group *sg;
556:
1.72 nicm 557: if ((sg = session_group_contains(s)) == NULL)
1.11 nicm 558: return;
559: TAILQ_REMOVE(&sg->sessions, s, gentry);
560: if (TAILQ_EMPTY(&sg->sessions)) {
1.72 nicm 561: RB_REMOVE(session_groups, &session_groups, sg);
1.36 nicm 562: free(sg);
1.11 nicm 563: }
564: }
565:
1.45 nicm 566: /* Count number of sessions in session group. */
1.78 nicm 567: u_int
1.45 nicm 568: session_group_count(struct session_group *sg)
569: {
570: struct session *s;
571: u_int n;
572:
573: n = 0;
574: TAILQ_FOREACH(s, &sg->sessions, gentry)
575: n++;
576: return (n);
577: }
578:
1.11 nicm 579: /* Synchronize a session to its session group. */
580: void
581: session_group_synchronize_to(struct session *s)
582: {
583: struct session_group *sg;
584: struct session *target;
585:
1.72 nicm 586: if ((sg = session_group_contains(s)) == NULL)
1.11 nicm 587: return;
588:
589: target = NULL;
590: TAILQ_FOREACH(target, &sg->sessions, gentry) {
591: if (target != s)
592: break;
593: }
1.72 nicm 594: if (target != NULL)
595: session_group_synchronize1(target, s);
1.11 nicm 596: }
597:
598: /* Synchronize a session group to a session. */
599: void
600: session_group_synchronize_from(struct session *target)
601: {
602: struct session_group *sg;
603: struct session *s;
604:
1.72 nicm 605: if ((sg = session_group_contains(target)) == NULL)
1.11 nicm 606: return;
607:
608: TAILQ_FOREACH(s, &sg->sessions, gentry) {
609: if (s != target)
610: session_group_synchronize1(target, s);
611: }
612: }
613:
614: /*
615: * Synchronize a session with a target session. This means destroying all
616: * winlinks then recreating them, then updating the current window, last window
617: * stack and alerts.
618: */
1.64 nicm 619: static void
1.11 nicm 620: session_group_synchronize1(struct session *target, struct session *s)
621: {
622: struct winlinks old_windows, *ww;
623: struct winlink_stack old_lastw;
624: struct winlink *wl, *wl2;
625:
626: /* Don't do anything if the session is empty (it'll be destroyed). */
627: ww = &target->windows;
628: if (RB_EMPTY(ww))
629: return;
630:
631: /* If the current window has vanished, move to the next now. */
1.16 nicm 632: if (s->curw != NULL &&
633: winlink_find_by_index(ww, s->curw->idx) == NULL &&
634: session_last(s) != 0 && session_previous(s, 0) != 0)
635: session_next(s, 0);
1.11 nicm 636:
637: /* Save the old pointer and reset it. */
638: memcpy(&old_windows, &s->windows, sizeof old_windows);
639: RB_INIT(&s->windows);
640:
641: /* Link all the windows from the target. */
1.18 nicm 642: RB_FOREACH(wl, winlinks, ww) {
1.30 nicm 643: wl2 = winlink_add(&s->windows, wl->idx);
1.70 nicm 644: wl2->session = s;
1.30 nicm 645: winlink_set_window(wl2, wl->window);
1.68 nicm 646: notify_session_window("window-linked", s, wl2->window);
1.18 nicm 647: wl2->flags |= wl->flags & WINLINK_ALERTFLAGS;
648: }
1.11 nicm 649:
650: /* Fix up the current window. */
651: if (s->curw != NULL)
652: s->curw = winlink_find_by_index(&s->windows, s->curw->idx);
653: else
654: s->curw = winlink_find_by_index(&s->windows, target->curw->idx);
655:
656: /* Fix up the last window stack. */
657: memcpy(&old_lastw, &s->lastw, sizeof old_lastw);
658: TAILQ_INIT(&s->lastw);
659: TAILQ_FOREACH(wl, &old_lastw, sentry) {
660: wl2 = winlink_find_by_index(&s->windows, wl->idx);
661: if (wl2 != NULL)
662: TAILQ_INSERT_TAIL(&s->lastw, wl2, sentry);
663: }
664:
665: /* Then free the old winlinks list. */
666: while (!RB_EMPTY(&old_windows)) {
667: wl = RB_ROOT(&old_windows);
1.45 nicm 668: wl2 = winlink_find_by_window_id(&s->windows, wl->window->id);
669: if (wl2 == NULL)
1.68 nicm 670: notify_session_window("window-unlinked", s, wl->window);
1.13 nicm 671: winlink_remove(&old_windows, wl);
1.11 nicm 672: }
1.34 nicm 673: }
674:
675: /* Renumber the windows across winlinks attached to a specific session. */
676: void
677: session_renumber_windows(struct session *s)
678: {
679: struct winlink *wl, *wl1, *wl_new;
680: struct winlinks old_wins;
681: struct winlink_stack old_lastw;
682: int new_idx, new_curw_idx;
683:
684: /* Save and replace old window list. */
685: memcpy(&old_wins, &s->windows, sizeof old_wins);
686: RB_INIT(&s->windows);
687:
688: /* Start renumbering from the base-index if it's set. */
1.56 nicm 689: new_idx = options_get_number(s->options, "base-index");
1.34 nicm 690: new_curw_idx = 0;
691:
692: /* Go through the winlinks and assign new indexes. */
693: RB_FOREACH(wl, winlinks, &old_wins) {
694: wl_new = winlink_add(&s->windows, new_idx);
1.70 nicm 695: wl_new->session = s;
1.34 nicm 696: winlink_set_window(wl_new, wl->window);
697: wl_new->flags |= wl->flags & WINLINK_ALERTFLAGS;
698:
699: if (wl == s->curw)
700: new_curw_idx = wl_new->idx;
701:
702: new_idx++;
703: }
704:
705: /* Fix the stack of last windows now. */
706: memcpy(&old_lastw, &s->lastw, sizeof old_lastw);
707: TAILQ_INIT(&s->lastw);
708: TAILQ_FOREACH(wl, &old_lastw, sentry) {
1.40 nicm 709: wl_new = winlink_find_by_window(&s->windows, wl->window);
1.34 nicm 710: if (wl_new != NULL)
711: TAILQ_INSERT_TAIL(&s->lastw, wl_new, sentry);
712: }
713:
714: /* Set the current window. */
715: s->curw = winlink_find_by_index(&s->windows, new_curw_idx);
716:
717: /* Free the old winlinks (reducing window references too). */
718: RB_FOREACH_SAFE(wl, winlinks, &old_wins, wl1)
719: winlink_remove(&old_wins, wl);
1.1 nicm 720: }
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