Annotation of src/usr.bin/tmux/session.c, Revision 1.78
1.78 ! nicm 1: /* $OpenBSD: session.c,v 1.77 2017/07/09 22:33:09 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 *);
1.72 nicm 42: static void session_group_synchronize1(struct session *, struct session *);
43:
1.25 nicm 44: RB_GENERATE(sessions, session, entry, session_cmp);
45:
46: int
47: session_cmp(struct session *s1, struct session *s2)
48: {
49: return (strcmp(s1->name, s2->name));
50: }
51:
1.72 nicm 52: RB_GENERATE(session_groups, session_group, entry, session_group_cmp);
53:
54: int
55: session_group_cmp(struct session_group *s1, struct session_group *s2)
56: {
57: return (strcmp(s1->name, s2->name));
58: }
59:
1.21 nicm 60: /*
61: * Find if session is still alive. This is true if it is still on the global
62: * sessions list.
63: */
64: int
65: session_alive(struct session *s)
66: {
1.25 nicm 67: struct session *s_loop;
1.21 nicm 68:
1.25 nicm 69: RB_FOREACH(s_loop, sessions, &sessions) {
70: if (s_loop == s)
71: return (1);
72: }
73: return (0);
1.21 nicm 74: }
1.1 nicm 75:
76: /* Find session by name. */
77: struct session *
78: session_find(const char *name)
79: {
1.25 nicm 80: struct session s;
81:
82: s.name = (char *) name;
83: return (RB_FIND(sessions, &sessions, &s));
1.48 nicm 84: }
85:
86: /* Find session by id parsed from a string. */
87: struct session *
88: session_find_by_id_str(const char *s)
89: {
90: const char *errstr;
91: u_int id;
92:
93: if (*s != '$')
94: return (NULL);
95:
96: id = strtonum(s + 1, 0, UINT_MAX, &errstr);
97: if (errstr != NULL)
98: return (NULL);
99: return (session_find_by_id(id));
1.25 nicm 100: }
101:
1.38 nicm 102: /* Find session by id. */
1.25 nicm 103: struct session *
1.38 nicm 104: session_find_by_id(u_int id)
1.25 nicm 105: {
1.1 nicm 106: struct session *s;
107:
1.25 nicm 108: RB_FOREACH(s, sessions, &sessions) {
1.38 nicm 109: if (s->id == id)
1.1 nicm 110: return (s);
111: }
112: return (NULL);
113: }
114:
115: /* Create a new session. */
116: struct session *
1.72 nicm 117: session_create(const char *prefix, const char *name, int argc, char **argv,
118: const char *path, const char *cwd, struct environ *env, struct termios *tio,
119: int idx, u_int sx, u_int sy, char **cause)
1.1 nicm 120: {
121: struct session *s;
1.44 nicm 122: struct winlink *wl;
1.1 nicm 123:
1.52 nicm 124: s = xcalloc(1, sizeof *s);
1.50 nicm 125: s->references = 1;
1.1 nicm 126: s->flags = 0;
1.7 nicm 127:
1.58 nicm 128: s->cwd = xstrdup(cwd);
1.19 nicm 129:
1.1 nicm 130: s->curw = NULL;
1.11 nicm 131: TAILQ_INIT(&s->lastw);
1.1 nicm 132: RB_INIT(&s->windows);
1.7 nicm 133:
1.57 nicm 134: s->environ = environ_create();
1.3 nicm 135: if (env != NULL)
1.57 nicm 136: environ_copy(env, s->environ);
1.61 nicm 137:
1.56 nicm 138: s->options = options_create(global_s_options);
1.61 nicm 139: s->hooks = hooks_create(global_hooks);
1.71 nicm 140:
141: status_update_saved(s);
1.8 nicm 142:
143: s->tio = NULL;
144: if (tio != NULL) {
145: s->tio = xmalloc(sizeof *s->tio);
146: memcpy(s->tio, tio, sizeof *s->tio);
147: }
1.1 nicm 148:
149: s->sx = sx;
150: s->sy = sy;
151:
1.32 nicm 152: if (name != NULL) {
1.1 nicm 153: s->name = xstrdup(name);
1.38 nicm 154: s->id = next_session_id++;
1.32 nicm 155: } else {
156: s->name = NULL;
157: do {
1.38 nicm 158: s->id = next_session_id++;
1.46 nicm 159: free(s->name);
1.72 nicm 160: if (prefix != NULL)
161: xasprintf(&s->name, "%s-%u", prefix, s->id);
162: else
163: xasprintf(&s->name, "%u", s->id);
1.32 nicm 164: } while (RB_FIND(sessions, &sessions, s) != NULL);
165: }
1.25 nicm 166: RB_INSERT(sessions, &sessions, s);
1.15 nicm 167:
1.59 nicm 168: log_debug("new session %s $%u", s->name, s->id);
169:
1.52 nicm 170: if (gettimeofday(&s->creation_time, NULL) != 0)
171: fatal("gettimeofday failed");
172: session_update_activity(s, &s->creation_time);
173:
1.44 nicm 174: if (argc >= 0) {
175: wl = session_new(s, NULL, argc, argv, path, cwd, idx, cause);
176: if (wl == NULL) {
1.77 nicm 177: session_destroy(s, __func__);
1.11 nicm 178: return (NULL);
179: }
180: session_select(s, RB_ROOT(&s->windows)->idx);
1.1 nicm 181: }
182:
183: log_debug("session %s created", s->name);
184:
185: return (s);
186: }
187:
1.75 nicm 188: /* Add a reference to a session. */
189: void
190: session_add_ref(struct session *s, const char *from)
191: {
192: s->references++;
193: log_debug("%s: %s %s, now %d", __func__, s->name, from, s->references);
194: }
195:
1.50 nicm 196: /* Remove a reference from a session. */
197: void
1.75 nicm 198: session_remove_ref(struct session *s, const char *from)
1.50 nicm 199: {
1.75 nicm 200: s->references--;
201: log_debug("%s: %s %s, now %d", __func__, s->name, from, s->references);
1.50 nicm 202:
203: if (s->references == 0)
204: event_once(-1, EV_TIMEOUT, session_free, s, NULL);
205: }
206:
207: /* Free session. */
1.63 nicm 208: static void
1.60 nicm 209: session_free(__unused int fd, __unused short events, void *arg)
1.50 nicm 210: {
211: struct session *s = arg;
212:
1.55 nicm 213: log_debug("session %s freed (%d references)", s->name, s->references);
1.50 nicm 214:
1.53 nicm 215: if (s->references == 0) {
1.57 nicm 216: environ_free(s->environ);
1.61 nicm 217:
1.56 nicm 218: options_free(s->options);
1.61 nicm 219: hooks_free(s->hooks);
1.56 nicm 220:
1.53 nicm 221: free(s->name);
1.50 nicm 222: free(s);
1.53 nicm 223: }
1.50 nicm 224: }
225:
1.1 nicm 226: /* Destroy a session. */
227: void
1.77 nicm 228: session_destroy(struct session *s, const char *from)
1.1 nicm 229: {
1.33 nicm 230: struct winlink *wl;
1.39 nicm 231:
1.77 nicm 232: log_debug("session %s destroyed (%s)", s->name, from);
1.66 nicm 233: s->curw = NULL;
1.1 nicm 234:
1.25 nicm 235: RB_REMOVE(sessions, &sessions, s);
1.68 nicm 236: notify_session("session-closed", s);
1.1 nicm 237:
1.36 nicm 238: free(s->tio);
1.8 nicm 239:
1.52 nicm 240: if (event_initialized(&s->lock_timer))
241: event_del(&s->lock_timer);
242:
1.11 nicm 243: session_group_remove(s);
1.1 nicm 244:
1.11 nicm 245: while (!TAILQ_EMPTY(&s->lastw))
246: winlink_stack_remove(&s->lastw, TAILQ_FIRST(&s->lastw));
1.33 nicm 247: while (!RB_EMPTY(&s->windows)) {
248: wl = RB_ROOT(&s->windows);
1.68 nicm 249: notify_session_window("window-unlinked", s, wl->window);
1.33 nicm 250: winlink_remove(&s->windows, wl);
251: }
1.1 nicm 252:
1.58 nicm 253: free((void *)s->cwd);
1.15 nicm 254:
1.75 nicm 255: session_remove_ref(s, __func__);
1.31 nicm 256: }
257:
1.42 nicm 258: /* Check a session name is valid: not empty and no colons or periods. */
1.31 nicm 259: int
260: session_check_name(const char *name)
261: {
1.42 nicm 262: return (*name != '\0' && name[strcspn(name, ":.")] == '\0');
1.27 nicm 263: }
264:
1.52 nicm 265: /* Lock session if it has timed out. */
1.63 nicm 266: static void
1.60 nicm 267: session_lock_timer(__unused int fd, __unused short events, void *arg)
1.52 nicm 268: {
269: struct session *s = arg;
270:
271: if (s->flags & SESSION_UNATTACHED)
272: return;
273:
274: log_debug("session %s locked, activity time %lld", s->name,
275: (long long)s->activity_time.tv_sec);
276:
277: server_lock_session(s);
278: recalculate_sizes();
279: }
280:
1.51 nicm 281: /* Update activity time. */
1.27 nicm 282: void
1.51 nicm 283: session_update_activity(struct session *s, struct timeval *from)
1.27 nicm 284: {
1.51 nicm 285: struct timeval *last = &s->last_activity_time;
1.52 nicm 286: struct timeval tv;
1.51 nicm 287:
288: memcpy(last, &s->activity_time, sizeof *last);
289: if (from == NULL)
290: gettimeofday(&s->activity_time, NULL);
291: else
292: memcpy(&s->activity_time, from, sizeof s->activity_time);
1.59 nicm 293:
294: log_debug("session %s activity %lld.%06d (last %lld.%06d)", s->name,
295: (long long)s->activity_time.tv_sec, (int)s->activity_time.tv_usec,
296: (long long)last->tv_sec, (int)last->tv_usec);
1.52 nicm 297:
298: if (evtimer_initialized(&s->lock_timer))
299: evtimer_del(&s->lock_timer);
300: else
301: evtimer_set(&s->lock_timer, session_lock_timer, s);
302:
303: if (~s->flags & SESSION_UNATTACHED) {
304: timerclear(&tv);
1.56 nicm 305: tv.tv_sec = options_get_number(s->options, "lock-after-time");
1.52 nicm 306: if (tv.tv_sec != 0)
307: evtimer_add(&s->lock_timer, &tv);
308: }
1.20 nicm 309: }
310:
311: /* Find the next usable session. */
312: struct session *
313: session_next_session(struct session *s)
314: {
315: struct session *s2;
316:
1.25 nicm 317: if (RB_EMPTY(&sessions) || !session_alive(s))
1.20 nicm 318: return (NULL);
319:
1.29 nicm 320: s2 = RB_NEXT(sessions, &sessions, s);
1.28 nicm 321: if (s2 == NULL)
322: s2 = RB_MIN(sessions, &sessions);
1.25 nicm 323: if (s2 == s)
324: return (NULL);
1.20 nicm 325: return (s2);
326: }
327:
328: /* Find the previous usable session. */
329: struct session *
330: session_previous_session(struct session *s)
331: {
332: struct session *s2;
333:
1.25 nicm 334: if (RB_EMPTY(&sessions) || !session_alive(s))
1.20 nicm 335: return (NULL);
336:
1.29 nicm 337: s2 = RB_PREV(sessions, &sessions, s);
1.28 nicm 338: if (s2 == NULL)
339: s2 = RB_MAX(sessions, &sessions);
1.25 nicm 340: if (s2 == s)
341: return (NULL);
1.20 nicm 342: return (s2);
1.1 nicm 343: }
344:
345: /* Create a new window on a session. */
346: struct winlink *
1.44 nicm 347: session_new(struct session *s, const char *name, int argc, char **argv,
1.58 nicm 348: const char *path, const char *cwd, int idx, char **cause)
1.1 nicm 349: {
350: struct window *w;
1.30 nicm 351: struct winlink *wl;
1.57 nicm 352: struct environ *env;
1.6 nicm 353: const char *shell;
1.1 nicm 354: u_int hlimit;
355:
1.30 nicm 356: if ((wl = winlink_add(&s->windows, idx)) == NULL) {
357: xasprintf(cause, "index in use: %d", idx);
358: return (NULL);
359: }
1.70 nicm 360: wl->session = s;
1.30 nicm 361:
1.56 nicm 362: shell = options_get_string(s->options, "default-shell");
1.6 nicm 363: if (*shell == '\0' || areshell(shell))
364: shell = _PATH_BSHELL;
365:
1.56 nicm 366: hlimit = options_get_number(s->options, "history-limit");
1.74 nicm 367: env = environ_for_session(s, 0);
1.67 nicm 368: w = window_create_spawn(name, argc, argv, path, shell, cwd, env, s->tio,
1.44 nicm 369: s->sx, s->sy, hlimit, cause);
1.3 nicm 370: if (w == NULL) {
1.30 nicm 371: winlink_remove(&s->windows, wl);
1.57 nicm 372: environ_free(env);
1.1 nicm 373: return (NULL);
1.3 nicm 374: }
1.30 nicm 375: winlink_set_window(wl, w);
1.73 nicm 376: environ_free(env);
1.68 nicm 377: notify_session_window("window-linked", s, w);
1.1 nicm 378:
1.30 nicm 379: session_group_synchronize_from(s);
380: return (wl);
1.1 nicm 381: }
382:
383: /* Attach a window to a session. */
384: struct winlink *
385: session_attach(struct session *s, struct window *w, int idx, char **cause)
386: {
387: struct winlink *wl;
388:
1.30 nicm 389: if ((wl = winlink_add(&s->windows, idx)) == NULL) {
1.1 nicm 390: xasprintf(cause, "index in use: %d", idx);
1.30 nicm 391: return (NULL);
392: }
1.70 nicm 393: wl->session = s;
1.30 nicm 394: winlink_set_window(wl, w);
1.68 nicm 395: notify_session_window("window-linked", s, w);
1.30 nicm 396:
1.11 nicm 397: session_group_synchronize_from(s);
1.1 nicm 398: return (wl);
399: }
400:
401: /* Detach a window from a session. */
402: int
403: session_detach(struct session *s, struct winlink *wl)
404: {
405: if (s->curw == wl &&
1.66 nicm 406: session_last(s) != 0 &&
407: session_previous(s, 0) != 0)
1.1 nicm 408: session_next(s, 0);
409:
1.18 nicm 410: wl->flags &= ~WINLINK_ALERTFLAGS;
1.68 nicm 411: notify_session_window("window-unlinked", s, wl->window);
1.1 nicm 412: winlink_stack_remove(&s->lastw, wl);
413: winlink_remove(&s->windows, wl);
1.66 nicm 414:
1.11 nicm 415: session_group_synchronize_from(s);
1.66 nicm 416:
1.1 nicm 417: if (RB_EMPTY(&s->windows)) {
1.77 nicm 418: session_destroy(s, __func__);
1.1 nicm 419: return (1);
420: }
421: return (0);
422: }
423:
424: /* Return if session has window. */
1.47 nicm 425: int
1.1 nicm 426: session_has(struct session *s, struct window *w)
427: {
428: struct winlink *wl;
429:
1.70 nicm 430: TAILQ_FOREACH(wl, &w->winlinks, wentry) {
431: if (wl->session == s)
1.47 nicm 432: return (1);
1.1 nicm 433: }
1.47 nicm 434: return (0);
1.49 nicm 435: }
436:
437: /*
438: * Return 1 if a window is linked outside this session (not including session
439: * groups). The window must be in this session!
440: */
441: int
442: session_is_linked(struct session *s, struct window *w)
443: {
444: struct session_group *sg;
445:
1.72 nicm 446: if ((sg = session_group_contains(s)) != NULL)
1.49 nicm 447: return (w->references != session_group_count(sg));
448: return (w->references != 1);
1.1 nicm 449: }
450:
1.63 nicm 451: static struct winlink *
1.18 nicm 452: session_next_alert(struct winlink *wl)
1.1 nicm 453: {
454: while (wl != NULL) {
1.18 nicm 455: if (wl->flags & WINLINK_ALERTFLAGS)
1.1 nicm 456: break;
1.14 nicm 457: wl = winlink_next(wl);
1.1 nicm 458: }
459: return (wl);
460: }
461:
462: /* Move session to next window. */
463: int
1.17 nicm 464: session_next(struct session *s, int alert)
1.1 nicm 465: {
466: struct winlink *wl;
467:
468: if (s->curw == NULL)
469: return (-1);
470:
1.14 nicm 471: wl = winlink_next(s->curw);
1.17 nicm 472: if (alert)
1.18 nicm 473: wl = session_next_alert(wl);
1.1 nicm 474: if (wl == NULL) {
475: wl = RB_MIN(winlinks, &s->windows);
1.18 nicm 476: if (alert && ((wl = session_next_alert(wl)) == NULL))
1.1 nicm 477: return (-1);
478: }
1.37 nicm 479: return (session_set_current(s, wl));
1.1 nicm 480: }
481:
1.63 nicm 482: static struct winlink *
1.18 nicm 483: session_previous_alert(struct winlink *wl)
1.1 nicm 484: {
485: while (wl != NULL) {
1.18 nicm 486: if (wl->flags & WINLINK_ALERTFLAGS)
1.1 nicm 487: break;
1.14 nicm 488: wl = winlink_previous(wl);
1.1 nicm 489: }
490: return (wl);
491: }
492:
493: /* Move session to previous window. */
494: int
1.17 nicm 495: session_previous(struct session *s, int alert)
1.1 nicm 496: {
497: struct winlink *wl;
498:
499: if (s->curw == NULL)
500: return (-1);
501:
1.14 nicm 502: wl = winlink_previous(s->curw);
1.17 nicm 503: if (alert)
1.18 nicm 504: wl = session_previous_alert(wl);
1.1 nicm 505: if (wl == NULL) {
506: wl = RB_MAX(winlinks, &s->windows);
1.18 nicm 507: if (alert && (wl = session_previous_alert(wl)) == NULL)
1.1 nicm 508: return (-1);
509: }
1.37 nicm 510: return (session_set_current(s, wl));
1.1 nicm 511: }
512:
513: /* Move session to specific window. */
514: int
515: session_select(struct session *s, int idx)
516: {
517: struct winlink *wl;
518:
519: wl = winlink_find_by_index(&s->windows, idx);
1.37 nicm 520: return (session_set_current(s, wl));
1.1 nicm 521: }
522:
523: /* Move session to last used window. */
524: int
525: session_last(struct session *s)
526: {
527: struct winlink *wl;
528:
1.11 nicm 529: wl = TAILQ_FIRST(&s->lastw);
1.37 nicm 530: if (wl == NULL)
531: return (-1);
532: if (wl == s->curw)
533: return (1);
534:
535: return (session_set_current(s, wl));
536: }
537:
538: /* Set current winlink to wl .*/
539: int
540: session_set_current(struct session *s, struct winlink *wl)
541: {
1.1 nicm 542: if (wl == NULL)
543: return (-1);
544: if (wl == s->curw)
545: return (1);
546:
547: winlink_stack_remove(&s->lastw, wl);
548: winlink_stack_push(&s->lastw, s->curw);
549: s->curw = wl;
1.35 nicm 550: winlink_clear_flags(wl);
1.54 nicm 551: window_update_activity(wl->window);
1.76 nicm 552: notify_session("session-window-changed", s);
1.1 nicm 553: return (0);
1.11 nicm 554: }
555:
556: /* Find the session group containing a session. */
557: struct session_group *
1.72 nicm 558: session_group_contains(struct session *target)
1.11 nicm 559: {
560: struct session_group *sg;
561: struct session *s;
562:
1.72 nicm 563: RB_FOREACH(sg, session_groups, &session_groups) {
1.11 nicm 564: TAILQ_FOREACH(s, &sg->sessions, gentry) {
565: if (s == target)
566: return (sg);
567: }
568: }
569: return (NULL);
570: }
571:
1.72 nicm 572: /* Find session group by name. */
573: struct session_group *
574: session_group_find(const char *name)
1.11 nicm 575: {
1.72 nicm 576: struct session_group sg;
577:
578: sg.name = name;
579: return (RB_FIND(session_groups, &session_groups, &sg));
580: }
1.11 nicm 581:
1.72 nicm 582: /* Create a new session group. */
583: struct session_group *
584: session_group_new(const char *name)
585: {
586: struct session_group *sg;
587:
588: if ((sg = session_group_find(name)) != NULL)
589: return (sg);
590:
591: sg = xcalloc(1, sizeof *sg);
592: sg->name = xstrdup(name);
593: TAILQ_INIT(&sg->sessions);
1.11 nicm 594:
1.72 nicm 595: RB_INSERT(session_groups, &session_groups, sg);
596: return (sg);
1.11 nicm 597: }
598:
1.72 nicm 599: /* Add a session to a session group. */
1.11 nicm 600: void
1.72 nicm 601: session_group_add(struct session_group *sg, struct session *s)
1.11 nicm 602: {
1.72 nicm 603: if (session_group_contains(s) == NULL)
604: TAILQ_INSERT_TAIL(&sg->sessions, s, gentry);
1.11 nicm 605: }
606:
607: /* Remove a session from its group and destroy the group if empty. */
1.64 nicm 608: static void
1.11 nicm 609: session_group_remove(struct session *s)
610: {
611: struct session_group *sg;
612:
1.72 nicm 613: if ((sg = session_group_contains(s)) == NULL)
1.11 nicm 614: return;
615: TAILQ_REMOVE(&sg->sessions, s, gentry);
616: if (TAILQ_EMPTY(&sg->sessions)) {
1.72 nicm 617: RB_REMOVE(session_groups, &session_groups, sg);
1.36 nicm 618: free(sg);
1.11 nicm 619: }
620: }
621:
1.45 nicm 622: /* Count number of sessions in session group. */
1.78 ! nicm 623: u_int
1.45 nicm 624: session_group_count(struct session_group *sg)
625: {
626: struct session *s;
627: u_int n;
628:
629: n = 0;
630: TAILQ_FOREACH(s, &sg->sessions, gentry)
631: n++;
632: return (n);
633: }
634:
1.11 nicm 635: /* Synchronize a session to its session group. */
636: void
637: session_group_synchronize_to(struct session *s)
638: {
639: struct session_group *sg;
640: struct session *target;
641:
1.72 nicm 642: if ((sg = session_group_contains(s)) == NULL)
1.11 nicm 643: return;
644:
645: target = NULL;
646: TAILQ_FOREACH(target, &sg->sessions, gentry) {
647: if (target != s)
648: break;
649: }
1.72 nicm 650: if (target != NULL)
651: session_group_synchronize1(target, s);
1.11 nicm 652: }
653:
654: /* Synchronize a session group to a session. */
655: void
656: session_group_synchronize_from(struct session *target)
657: {
658: struct session_group *sg;
659: struct session *s;
660:
1.72 nicm 661: if ((sg = session_group_contains(target)) == NULL)
1.11 nicm 662: return;
663:
664: TAILQ_FOREACH(s, &sg->sessions, gentry) {
665: if (s != target)
666: session_group_synchronize1(target, s);
667: }
668: }
669:
670: /*
671: * Synchronize a session with a target session. This means destroying all
672: * winlinks then recreating them, then updating the current window, last window
673: * stack and alerts.
674: */
1.64 nicm 675: static void
1.11 nicm 676: session_group_synchronize1(struct session *target, struct session *s)
677: {
678: struct winlinks old_windows, *ww;
679: struct winlink_stack old_lastw;
680: struct winlink *wl, *wl2;
681:
682: /* Don't do anything if the session is empty (it'll be destroyed). */
683: ww = &target->windows;
684: if (RB_EMPTY(ww))
685: return;
686:
687: /* If the current window has vanished, move to the next now. */
1.16 nicm 688: if (s->curw != NULL &&
689: winlink_find_by_index(ww, s->curw->idx) == NULL &&
690: session_last(s) != 0 && session_previous(s, 0) != 0)
691: session_next(s, 0);
1.11 nicm 692:
693: /* Save the old pointer and reset it. */
694: memcpy(&old_windows, &s->windows, sizeof old_windows);
695: RB_INIT(&s->windows);
696:
697: /* Link all the windows from the target. */
1.18 nicm 698: RB_FOREACH(wl, winlinks, ww) {
1.30 nicm 699: wl2 = winlink_add(&s->windows, wl->idx);
1.70 nicm 700: wl2->session = s;
1.30 nicm 701: winlink_set_window(wl2, wl->window);
1.68 nicm 702: notify_session_window("window-linked", s, wl2->window);
1.18 nicm 703: wl2->flags |= wl->flags & WINLINK_ALERTFLAGS;
704: }
1.11 nicm 705:
706: /* Fix up the current window. */
707: if (s->curw != NULL)
708: s->curw = winlink_find_by_index(&s->windows, s->curw->idx);
709: else
710: s->curw = winlink_find_by_index(&s->windows, target->curw->idx);
711:
712: /* Fix up the last window stack. */
713: memcpy(&old_lastw, &s->lastw, sizeof old_lastw);
714: TAILQ_INIT(&s->lastw);
715: TAILQ_FOREACH(wl, &old_lastw, sentry) {
716: wl2 = winlink_find_by_index(&s->windows, wl->idx);
717: if (wl2 != NULL)
718: TAILQ_INSERT_TAIL(&s->lastw, wl2, sentry);
719: }
720:
721: /* Then free the old winlinks list. */
722: while (!RB_EMPTY(&old_windows)) {
723: wl = RB_ROOT(&old_windows);
1.45 nicm 724: wl2 = winlink_find_by_window_id(&s->windows, wl->window->id);
725: if (wl2 == NULL)
1.68 nicm 726: notify_session_window("window-unlinked", s, wl->window);
1.13 nicm 727: winlink_remove(&old_windows, wl);
1.11 nicm 728: }
1.34 nicm 729: }
730:
731: /* Renumber the windows across winlinks attached to a specific session. */
732: void
733: session_renumber_windows(struct session *s)
734: {
735: struct winlink *wl, *wl1, *wl_new;
736: struct winlinks old_wins;
737: struct winlink_stack old_lastw;
738: int new_idx, new_curw_idx;
739:
740: /* Save and replace old window list. */
741: memcpy(&old_wins, &s->windows, sizeof old_wins);
742: RB_INIT(&s->windows);
743:
744: /* Start renumbering from the base-index if it's set. */
1.56 nicm 745: new_idx = options_get_number(s->options, "base-index");
1.34 nicm 746: new_curw_idx = 0;
747:
748: /* Go through the winlinks and assign new indexes. */
749: RB_FOREACH(wl, winlinks, &old_wins) {
750: wl_new = winlink_add(&s->windows, new_idx);
1.70 nicm 751: wl_new->session = s;
1.34 nicm 752: winlink_set_window(wl_new, wl->window);
753: wl_new->flags |= wl->flags & WINLINK_ALERTFLAGS;
754:
755: if (wl == s->curw)
756: new_curw_idx = wl_new->idx;
757:
758: new_idx++;
759: }
760:
761: /* Fix the stack of last windows now. */
762: memcpy(&old_lastw, &s->lastw, sizeof old_lastw);
763: TAILQ_INIT(&s->lastw);
764: TAILQ_FOREACH(wl, &old_lastw, sentry) {
1.40 nicm 765: wl_new = winlink_find_by_window(&s->windows, wl->window);
1.34 nicm 766: if (wl_new != NULL)
767: TAILQ_INSERT_TAIL(&s->lastw, wl_new, sentry);
768: }
769:
770: /* Set the current window. */
771: s->curw = winlink_find_by_index(&s->windows, new_curw_idx);
772:
773: /* Free the old winlinks (reducing window references too). */
774: RB_FOREACH_SAFE(wl, winlinks, &old_wins, wl1)
775: winlink_remove(&old_wins, wl);
1.1 nicm 776: }
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