Annotation of src/usr.bin/tmux/session.c, Revision 1.83
1.83 ! nicm 1: /* $OpenBSD: session.c,v 1.82 2018/10/18 08:38:01 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 *
1.72 nicm 115: session_create(const char *prefix, const char *name, int argc, char **argv,
1.82 nicm 116: const char *path, const char *cwd, struct environ *env, struct options *oo,
117: struct termios *tio, int idx, char **cause)
1.1 nicm 118: {
119: struct session *s;
1.44 nicm 120: struct winlink *wl;
1.1 nicm 121:
1.52 nicm 122: s = xcalloc(1, sizeof *s);
1.50 nicm 123: s->references = 1;
1.1 nicm 124: s->flags = 0;
1.7 nicm 125:
1.58 nicm 126: s->cwd = xstrdup(cwd);
1.19 nicm 127:
1.1 nicm 128: s->curw = NULL;
1.11 nicm 129: TAILQ_INIT(&s->lastw);
1.1 nicm 130: RB_INIT(&s->windows);
1.7 nicm 131:
1.57 nicm 132: s->environ = environ_create();
1.3 nicm 133: if (env != NULL)
1.57 nicm 134: environ_copy(env, s->environ);
1.61 nicm 135:
1.82 nicm 136: s->options = oo;
1.61 nicm 137: s->hooks = hooks_create(global_hooks);
1.71 nicm 138:
1.83 ! nicm 139: status_update_cache(s);
1.8 nicm 140:
141: s->tio = NULL;
142: if (tio != NULL) {
143: s->tio = xmalloc(sizeof *s->tio);
144: memcpy(s->tio, tio, sizeof *s->tio);
145: }
1.1 nicm 146:
1.32 nicm 147: if (name != NULL) {
1.1 nicm 148: s->name = xstrdup(name);
1.38 nicm 149: s->id = next_session_id++;
1.32 nicm 150: } else {
151: s->name = NULL;
152: do {
1.38 nicm 153: s->id = next_session_id++;
1.46 nicm 154: free(s->name);
1.72 nicm 155: if (prefix != NULL)
156: xasprintf(&s->name, "%s-%u", prefix, s->id);
157: else
158: xasprintf(&s->name, "%u", s->id);
1.32 nicm 159: } while (RB_FIND(sessions, &sessions, s) != NULL);
160: }
1.25 nicm 161: RB_INSERT(sessions, &sessions, s);
1.15 nicm 162:
1.59 nicm 163: log_debug("new session %s $%u", s->name, s->id);
164:
1.52 nicm 165: if (gettimeofday(&s->creation_time, NULL) != 0)
166: fatal("gettimeofday failed");
167: session_update_activity(s, &s->creation_time);
168:
1.44 nicm 169: if (argc >= 0) {
170: wl = session_new(s, NULL, argc, argv, path, cwd, idx, cause);
171: if (wl == NULL) {
1.77 nicm 172: session_destroy(s, __func__);
1.11 nicm 173: return (NULL);
174: }
175: session_select(s, RB_ROOT(&s->windows)->idx);
1.1 nicm 176: }
177:
178: log_debug("session %s created", s->name);
179:
180: return (s);
181: }
182:
1.75 nicm 183: /* Add a reference to a session. */
184: void
185: session_add_ref(struct session *s, const char *from)
186: {
187: s->references++;
188: log_debug("%s: %s %s, now %d", __func__, s->name, from, s->references);
189: }
190:
1.50 nicm 191: /* Remove a reference from a session. */
192: void
1.75 nicm 193: session_remove_ref(struct session *s, const char *from)
1.50 nicm 194: {
1.75 nicm 195: s->references--;
196: log_debug("%s: %s %s, now %d", __func__, s->name, from, s->references);
1.50 nicm 197:
198: if (s->references == 0)
199: event_once(-1, EV_TIMEOUT, session_free, s, NULL);
200: }
201:
202: /* Free session. */
1.63 nicm 203: static void
1.60 nicm 204: session_free(__unused int fd, __unused short events, void *arg)
1.50 nicm 205: {
206: struct session *s = arg;
207:
1.55 nicm 208: log_debug("session %s freed (%d references)", s->name, s->references);
1.50 nicm 209:
1.53 nicm 210: if (s->references == 0) {
1.57 nicm 211: environ_free(s->environ);
1.61 nicm 212:
1.56 nicm 213: options_free(s->options);
1.61 nicm 214: hooks_free(s->hooks);
1.56 nicm 215:
1.53 nicm 216: free(s->name);
1.50 nicm 217: free(s);
1.53 nicm 218: }
1.50 nicm 219: }
220:
1.1 nicm 221: /* Destroy a session. */
222: void
1.77 nicm 223: session_destroy(struct session *s, const char *from)
1.1 nicm 224: {
1.33 nicm 225: struct winlink *wl;
1.39 nicm 226:
1.77 nicm 227: log_debug("session %s destroyed (%s)", s->name, from);
1.66 nicm 228: s->curw = NULL;
1.1 nicm 229:
1.25 nicm 230: RB_REMOVE(sessions, &sessions, s);
1.68 nicm 231: notify_session("session-closed", s);
1.1 nicm 232:
1.36 nicm 233: free(s->tio);
1.8 nicm 234:
1.52 nicm 235: if (event_initialized(&s->lock_timer))
236: event_del(&s->lock_timer);
237:
1.11 nicm 238: session_group_remove(s);
1.1 nicm 239:
1.11 nicm 240: while (!TAILQ_EMPTY(&s->lastw))
241: winlink_stack_remove(&s->lastw, TAILQ_FIRST(&s->lastw));
1.33 nicm 242: while (!RB_EMPTY(&s->windows)) {
243: wl = RB_ROOT(&s->windows);
1.68 nicm 244: notify_session_window("window-unlinked", s, wl->window);
1.33 nicm 245: winlink_remove(&s->windows, wl);
246: }
1.1 nicm 247:
1.58 nicm 248: free((void *)s->cwd);
1.15 nicm 249:
1.75 nicm 250: session_remove_ref(s, __func__);
1.31 nicm 251: }
252:
1.42 nicm 253: /* Check a session name is valid: not empty and no colons or periods. */
1.31 nicm 254: int
255: session_check_name(const char *name)
256: {
1.42 nicm 257: return (*name != '\0' && name[strcspn(name, ":.")] == '\0');
1.27 nicm 258: }
259:
1.52 nicm 260: /* Lock session if it has timed out. */
1.63 nicm 261: static void
1.60 nicm 262: session_lock_timer(__unused int fd, __unused short events, void *arg)
1.52 nicm 263: {
264: struct session *s = arg;
265:
1.81 nicm 266: if (s->attached == 0)
1.52 nicm 267: return;
268:
269: log_debug("session %s locked, activity time %lld", s->name,
270: (long long)s->activity_time.tv_sec);
271:
272: server_lock_session(s);
273: recalculate_sizes();
274: }
275:
1.51 nicm 276: /* Update activity time. */
1.27 nicm 277: void
1.51 nicm 278: session_update_activity(struct session *s, struct timeval *from)
1.27 nicm 279: {
1.51 nicm 280: struct timeval *last = &s->last_activity_time;
1.52 nicm 281: struct timeval tv;
1.51 nicm 282:
283: memcpy(last, &s->activity_time, sizeof *last);
284: if (from == NULL)
285: gettimeofday(&s->activity_time, NULL);
286: else
287: memcpy(&s->activity_time, from, sizeof s->activity_time);
1.59 nicm 288:
1.79 nicm 289: log_debug("session $%u %s activity %lld.%06d (last %lld.%06d)", s->id,
290: s->name, (long long)s->activity_time.tv_sec,
291: (int)s->activity_time.tv_usec, (long long)last->tv_sec,
292: (int)last->tv_usec);
1.52 nicm 293:
294: if (evtimer_initialized(&s->lock_timer))
295: evtimer_del(&s->lock_timer);
296: else
297: evtimer_set(&s->lock_timer, session_lock_timer, s);
298:
1.81 nicm 299: if (s->attached != 0) {
1.52 nicm 300: timerclear(&tv);
1.56 nicm 301: tv.tv_sec = options_get_number(s->options, "lock-after-time");
1.52 nicm 302: if (tv.tv_sec != 0)
303: evtimer_add(&s->lock_timer, &tv);
304: }
1.20 nicm 305: }
306:
307: /* Find the next usable session. */
308: struct session *
309: session_next_session(struct session *s)
310: {
311: struct session *s2;
312:
1.25 nicm 313: if (RB_EMPTY(&sessions) || !session_alive(s))
1.20 nicm 314: return (NULL);
315:
1.29 nicm 316: s2 = RB_NEXT(sessions, &sessions, s);
1.28 nicm 317: if (s2 == NULL)
318: s2 = RB_MIN(sessions, &sessions);
1.25 nicm 319: if (s2 == s)
320: return (NULL);
1.20 nicm 321: return (s2);
322: }
323:
324: /* Find the previous usable session. */
325: struct session *
326: session_previous_session(struct session *s)
327: {
328: struct session *s2;
329:
1.25 nicm 330: if (RB_EMPTY(&sessions) || !session_alive(s))
1.20 nicm 331: return (NULL);
332:
1.29 nicm 333: s2 = RB_PREV(sessions, &sessions, s);
1.28 nicm 334: if (s2 == NULL)
335: s2 = RB_MAX(sessions, &sessions);
1.25 nicm 336: if (s2 == s)
337: return (NULL);
1.20 nicm 338: return (s2);
1.1 nicm 339: }
340:
341: /* Create a new window on a session. */
342: struct winlink *
1.44 nicm 343: session_new(struct session *s, const char *name, int argc, char **argv,
1.58 nicm 344: const char *path, const char *cwd, int idx, char **cause)
1.1 nicm 345: {
346: struct window *w;
1.30 nicm 347: struct winlink *wl;
1.57 nicm 348: struct environ *env;
1.6 nicm 349: const char *shell;
1.82 nicm 350: u_int hlimit, sx, sy;
1.1 nicm 351:
1.30 nicm 352: if ((wl = winlink_add(&s->windows, idx)) == NULL) {
353: xasprintf(cause, "index in use: %d", idx);
354: return (NULL);
355: }
1.70 nicm 356: wl->session = s;
1.30 nicm 357:
1.56 nicm 358: shell = options_get_string(s->options, "default-shell");
1.6 nicm 359: if (*shell == '\0' || areshell(shell))
360: shell = _PATH_BSHELL;
361:
1.82 nicm 362: default_window_size(s, NULL, &sx, &sy, -1);
1.56 nicm 363: hlimit = options_get_number(s->options, "history-limit");
1.74 nicm 364: env = environ_for_session(s, 0);
1.67 nicm 365: w = window_create_spawn(name, argc, argv, path, shell, cwd, env, s->tio,
1.82 nicm 366: sx, sy, hlimit, cause);
1.3 nicm 367: if (w == NULL) {
1.30 nicm 368: winlink_remove(&s->windows, wl);
1.57 nicm 369: environ_free(env);
1.1 nicm 370: return (NULL);
1.3 nicm 371: }
1.30 nicm 372: winlink_set_window(wl, w);
1.73 nicm 373: environ_free(env);
1.68 nicm 374: notify_session_window("window-linked", s, w);
1.1 nicm 375:
1.30 nicm 376: session_group_synchronize_from(s);
377: return (wl);
1.1 nicm 378: }
379:
380: /* Attach a window to a session. */
381: struct winlink *
382: session_attach(struct session *s, struct window *w, int idx, char **cause)
383: {
384: struct winlink *wl;
385:
1.30 nicm 386: if ((wl = winlink_add(&s->windows, idx)) == NULL) {
1.1 nicm 387: xasprintf(cause, "index in use: %d", idx);
1.30 nicm 388: return (NULL);
389: }
1.70 nicm 390: wl->session = s;
1.30 nicm 391: winlink_set_window(wl, w);
1.68 nicm 392: notify_session_window("window-linked", s, w);
1.30 nicm 393:
1.11 nicm 394: session_group_synchronize_from(s);
1.1 nicm 395: return (wl);
396: }
397:
398: /* Detach a window from a session. */
399: int
400: session_detach(struct session *s, struct winlink *wl)
401: {
402: if (s->curw == wl &&
1.66 nicm 403: session_last(s) != 0 &&
404: session_previous(s, 0) != 0)
1.1 nicm 405: session_next(s, 0);
406:
1.18 nicm 407: wl->flags &= ~WINLINK_ALERTFLAGS;
1.68 nicm 408: notify_session_window("window-unlinked", s, wl->window);
1.1 nicm 409: winlink_stack_remove(&s->lastw, wl);
410: winlink_remove(&s->windows, wl);
1.66 nicm 411:
1.11 nicm 412: session_group_synchronize_from(s);
1.66 nicm 413:
1.1 nicm 414: if (RB_EMPTY(&s->windows)) {
1.77 nicm 415: session_destroy(s, __func__);
1.1 nicm 416: return (1);
417: }
418: return (0);
419: }
420:
421: /* Return if session has window. */
1.47 nicm 422: int
1.1 nicm 423: session_has(struct session *s, struct window *w)
424: {
425: struct winlink *wl;
426:
1.70 nicm 427: TAILQ_FOREACH(wl, &w->winlinks, wentry) {
428: if (wl->session == s)
1.47 nicm 429: return (1);
1.1 nicm 430: }
1.47 nicm 431: return (0);
1.49 nicm 432: }
433:
434: /*
435: * Return 1 if a window is linked outside this session (not including session
436: * groups). The window must be in this session!
437: */
438: int
439: session_is_linked(struct session *s, struct window *w)
440: {
441: struct session_group *sg;
442:
1.72 nicm 443: if ((sg = session_group_contains(s)) != NULL)
1.49 nicm 444: return (w->references != session_group_count(sg));
445: return (w->references != 1);
1.1 nicm 446: }
447:
1.63 nicm 448: static struct winlink *
1.18 nicm 449: session_next_alert(struct winlink *wl)
1.1 nicm 450: {
451: while (wl != NULL) {
1.18 nicm 452: if (wl->flags & WINLINK_ALERTFLAGS)
1.1 nicm 453: break;
1.14 nicm 454: wl = winlink_next(wl);
1.1 nicm 455: }
456: return (wl);
457: }
458:
459: /* Move session to next window. */
460: int
1.17 nicm 461: session_next(struct session *s, int alert)
1.1 nicm 462: {
463: struct winlink *wl;
464:
465: if (s->curw == NULL)
466: return (-1);
467:
1.14 nicm 468: wl = winlink_next(s->curw);
1.17 nicm 469: if (alert)
1.18 nicm 470: wl = session_next_alert(wl);
1.1 nicm 471: if (wl == NULL) {
472: wl = RB_MIN(winlinks, &s->windows);
1.18 nicm 473: if (alert && ((wl = session_next_alert(wl)) == NULL))
1.1 nicm 474: return (-1);
475: }
1.37 nicm 476: return (session_set_current(s, wl));
1.1 nicm 477: }
478:
1.63 nicm 479: static struct winlink *
1.18 nicm 480: session_previous_alert(struct winlink *wl)
1.1 nicm 481: {
482: while (wl != NULL) {
1.18 nicm 483: if (wl->flags & WINLINK_ALERTFLAGS)
1.1 nicm 484: break;
1.14 nicm 485: wl = winlink_previous(wl);
1.1 nicm 486: }
487: return (wl);
488: }
489:
490: /* Move session to previous window. */
491: int
1.17 nicm 492: session_previous(struct session *s, int alert)
1.1 nicm 493: {
494: struct winlink *wl;
495:
496: if (s->curw == NULL)
497: return (-1);
498:
1.14 nicm 499: wl = winlink_previous(s->curw);
1.17 nicm 500: if (alert)
1.18 nicm 501: wl = session_previous_alert(wl);
1.1 nicm 502: if (wl == NULL) {
503: wl = RB_MAX(winlinks, &s->windows);
1.18 nicm 504: if (alert && (wl = session_previous_alert(wl)) == NULL)
1.1 nicm 505: return (-1);
506: }
1.37 nicm 507: return (session_set_current(s, wl));
1.1 nicm 508: }
509:
510: /* Move session to specific window. */
511: int
512: session_select(struct session *s, int idx)
513: {
514: struct winlink *wl;
515:
516: wl = winlink_find_by_index(&s->windows, idx);
1.37 nicm 517: return (session_set_current(s, wl));
1.1 nicm 518: }
519:
520: /* Move session to last used window. */
521: int
522: session_last(struct session *s)
523: {
524: struct winlink *wl;
525:
1.11 nicm 526: wl = TAILQ_FIRST(&s->lastw);
1.37 nicm 527: if (wl == NULL)
528: return (-1);
529: if (wl == s->curw)
530: return (1);
531:
532: return (session_set_current(s, wl));
533: }
534:
535: /* Set current winlink to wl .*/
536: int
537: session_set_current(struct session *s, struct winlink *wl)
538: {
1.1 nicm 539: if (wl == NULL)
540: return (-1);
541: if (wl == s->curw)
542: return (1);
543:
544: winlink_stack_remove(&s->lastw, wl);
545: winlink_stack_push(&s->lastw, s->curw);
546: s->curw = wl;
1.35 nicm 547: winlink_clear_flags(wl);
1.54 nicm 548: window_update_activity(wl->window);
1.82 nicm 549: tty_update_window_offset(wl->window);
1.76 nicm 550: notify_session("session-window-changed", s);
1.1 nicm 551: return (0);
1.11 nicm 552: }
553:
554: /* Find the session group containing a session. */
555: struct session_group *
1.72 nicm 556: session_group_contains(struct session *target)
1.11 nicm 557: {
558: struct session_group *sg;
559: struct session *s;
560:
1.72 nicm 561: RB_FOREACH(sg, session_groups, &session_groups) {
1.11 nicm 562: TAILQ_FOREACH(s, &sg->sessions, gentry) {
563: if (s == target)
564: return (sg);
565: }
566: }
567: return (NULL);
568: }
569:
1.72 nicm 570: /* Find session group by name. */
571: struct session_group *
572: session_group_find(const char *name)
1.11 nicm 573: {
1.72 nicm 574: struct session_group sg;
575:
576: sg.name = name;
577: return (RB_FIND(session_groups, &session_groups, &sg));
578: }
1.11 nicm 579:
1.72 nicm 580: /* Create a new session group. */
581: struct session_group *
582: session_group_new(const char *name)
583: {
584: struct session_group *sg;
585:
586: if ((sg = session_group_find(name)) != NULL)
587: return (sg);
588:
589: sg = xcalloc(1, sizeof *sg);
590: sg->name = xstrdup(name);
591: TAILQ_INIT(&sg->sessions);
1.11 nicm 592:
1.72 nicm 593: RB_INSERT(session_groups, &session_groups, sg);
594: return (sg);
1.11 nicm 595: }
596:
1.72 nicm 597: /* Add a session to a session group. */
1.11 nicm 598: void
1.72 nicm 599: session_group_add(struct session_group *sg, struct session *s)
1.11 nicm 600: {
1.72 nicm 601: if (session_group_contains(s) == NULL)
602: TAILQ_INSERT_TAIL(&sg->sessions, s, gentry);
1.11 nicm 603: }
604:
605: /* Remove a session from its group and destroy the group if empty. */
1.64 nicm 606: static void
1.11 nicm 607: session_group_remove(struct session *s)
608: {
609: struct session_group *sg;
610:
1.72 nicm 611: if ((sg = session_group_contains(s)) == NULL)
1.11 nicm 612: return;
613: TAILQ_REMOVE(&sg->sessions, s, gentry);
614: if (TAILQ_EMPTY(&sg->sessions)) {
1.72 nicm 615: RB_REMOVE(session_groups, &session_groups, sg);
1.36 nicm 616: free(sg);
1.11 nicm 617: }
618: }
619:
1.45 nicm 620: /* Count number of sessions in session group. */
1.78 nicm 621: u_int
1.45 nicm 622: session_group_count(struct session_group *sg)
623: {
624: struct session *s;
625: u_int n;
626:
627: n = 0;
628: TAILQ_FOREACH(s, &sg->sessions, gentry)
629: n++;
630: return (n);
631: }
632:
1.11 nicm 633: /* Synchronize a session to its session group. */
634: void
635: session_group_synchronize_to(struct session *s)
636: {
637: struct session_group *sg;
638: struct session *target;
639:
1.72 nicm 640: if ((sg = session_group_contains(s)) == NULL)
1.11 nicm 641: return;
642:
643: target = NULL;
644: TAILQ_FOREACH(target, &sg->sessions, gentry) {
645: if (target != s)
646: break;
647: }
1.72 nicm 648: if (target != NULL)
649: session_group_synchronize1(target, s);
1.11 nicm 650: }
651:
652: /* Synchronize a session group to a session. */
653: void
654: session_group_synchronize_from(struct session *target)
655: {
656: struct session_group *sg;
657: struct session *s;
658:
1.72 nicm 659: if ((sg = session_group_contains(target)) == NULL)
1.11 nicm 660: return;
661:
662: TAILQ_FOREACH(s, &sg->sessions, gentry) {
663: if (s != target)
664: session_group_synchronize1(target, s);
665: }
666: }
667:
668: /*
669: * Synchronize a session with a target session. This means destroying all
670: * winlinks then recreating them, then updating the current window, last window
671: * stack and alerts.
672: */
1.64 nicm 673: static void
1.11 nicm 674: session_group_synchronize1(struct session *target, struct session *s)
675: {
676: struct winlinks old_windows, *ww;
677: struct winlink_stack old_lastw;
678: struct winlink *wl, *wl2;
679:
680: /* Don't do anything if the session is empty (it'll be destroyed). */
681: ww = &target->windows;
682: if (RB_EMPTY(ww))
683: return;
684:
685: /* If the current window has vanished, move to the next now. */
1.16 nicm 686: if (s->curw != NULL &&
687: winlink_find_by_index(ww, s->curw->idx) == NULL &&
688: session_last(s) != 0 && session_previous(s, 0) != 0)
689: session_next(s, 0);
1.11 nicm 690:
691: /* Save the old pointer and reset it. */
692: memcpy(&old_windows, &s->windows, sizeof old_windows);
693: RB_INIT(&s->windows);
694:
695: /* Link all the windows from the target. */
1.18 nicm 696: RB_FOREACH(wl, winlinks, ww) {
1.30 nicm 697: wl2 = winlink_add(&s->windows, wl->idx);
1.70 nicm 698: wl2->session = s;
1.30 nicm 699: winlink_set_window(wl2, wl->window);
1.68 nicm 700: notify_session_window("window-linked", s, wl2->window);
1.18 nicm 701: wl2->flags |= wl->flags & WINLINK_ALERTFLAGS;
702: }
1.11 nicm 703:
704: /* Fix up the current window. */
705: if (s->curw != NULL)
706: s->curw = winlink_find_by_index(&s->windows, s->curw->idx);
707: else
708: s->curw = winlink_find_by_index(&s->windows, target->curw->idx);
709:
710: /* Fix up the last window stack. */
711: memcpy(&old_lastw, &s->lastw, sizeof old_lastw);
712: TAILQ_INIT(&s->lastw);
713: TAILQ_FOREACH(wl, &old_lastw, sentry) {
714: wl2 = winlink_find_by_index(&s->windows, wl->idx);
715: if (wl2 != NULL)
716: TAILQ_INSERT_TAIL(&s->lastw, wl2, sentry);
717: }
718:
719: /* Then free the old winlinks list. */
720: while (!RB_EMPTY(&old_windows)) {
721: wl = RB_ROOT(&old_windows);
1.45 nicm 722: wl2 = winlink_find_by_window_id(&s->windows, wl->window->id);
723: if (wl2 == NULL)
1.68 nicm 724: notify_session_window("window-unlinked", s, wl->window);
1.13 nicm 725: winlink_remove(&old_windows, wl);
1.11 nicm 726: }
1.34 nicm 727: }
728:
729: /* Renumber the windows across winlinks attached to a specific session. */
730: void
731: session_renumber_windows(struct session *s)
732: {
733: struct winlink *wl, *wl1, *wl_new;
734: struct winlinks old_wins;
735: struct winlink_stack old_lastw;
736: int new_idx, new_curw_idx;
737:
738: /* Save and replace old window list. */
739: memcpy(&old_wins, &s->windows, sizeof old_wins);
740: RB_INIT(&s->windows);
741:
742: /* Start renumbering from the base-index if it's set. */
1.56 nicm 743: new_idx = options_get_number(s->options, "base-index");
1.34 nicm 744: new_curw_idx = 0;
745:
746: /* Go through the winlinks and assign new indexes. */
747: RB_FOREACH(wl, winlinks, &old_wins) {
748: wl_new = winlink_add(&s->windows, new_idx);
1.70 nicm 749: wl_new->session = s;
1.34 nicm 750: winlink_set_window(wl_new, wl->window);
751: wl_new->flags |= wl->flags & WINLINK_ALERTFLAGS;
752:
753: if (wl == s->curw)
754: new_curw_idx = wl_new->idx;
755:
756: new_idx++;
757: }
758:
759: /* Fix the stack of last windows now. */
760: memcpy(&old_lastw, &s->lastw, sizeof old_lastw);
761: TAILQ_INIT(&s->lastw);
762: TAILQ_FOREACH(wl, &old_lastw, sentry) {
1.40 nicm 763: wl_new = winlink_find_by_window(&s->windows, wl->window);
1.34 nicm 764: if (wl_new != NULL)
765: TAILQ_INSERT_TAIL(&s->lastw, wl_new, sentry);
766: }
767:
768: /* Set the current window. */
769: s->curw = winlink_find_by_index(&s->windows, new_curw_idx);
770:
771: /* Free the old winlinks (reducing window references too). */
772: RB_FOREACH_SAFE(wl, winlinks, &old_wins, wl1)
773: winlink_remove(&old_wins, wl);
1.1 nicm 774: }
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