Annotation of src/usr.bin/tmux/session.c, Revision 1.72
1.72 ! nicm 1: /* $OpenBSD: session.c,v 1.71 2017/02/03 21:01:02 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:
1.72 ! nicm 45: static u_int session_group_count(struct session_group *);
! 46: static void session_group_synchronize1(struct session *, struct session *);
! 47:
1.25 nicm 48: RB_GENERATE(sessions, session, entry, session_cmp);
49:
50: int
51: session_cmp(struct session *s1, struct session *s2)
52: {
53: return (strcmp(s1->name, s2->name));
54: }
55:
1.72 ! nicm 56: RB_GENERATE(session_groups, session_group, entry, session_group_cmp);
! 57:
! 58: int
! 59: session_group_cmp(struct session_group *s1, struct session_group *s2)
! 60: {
! 61: return (strcmp(s1->name, s2->name));
! 62: }
! 63:
1.21 nicm 64: /*
65: * Find if session is still alive. This is true if it is still on the global
66: * sessions list.
67: */
68: int
69: session_alive(struct session *s)
70: {
1.25 nicm 71: struct session *s_loop;
1.21 nicm 72:
1.25 nicm 73: RB_FOREACH(s_loop, sessions, &sessions) {
74: if (s_loop == s)
75: return (1);
76: }
77: return (0);
1.21 nicm 78: }
1.1 nicm 79:
80: /* Find session by name. */
81: struct session *
82: session_find(const char *name)
83: {
1.25 nicm 84: struct session s;
85:
86: s.name = (char *) name;
87: return (RB_FIND(sessions, &sessions, &s));
1.48 nicm 88: }
89:
90: /* Find session by id parsed from a string. */
91: struct session *
92: session_find_by_id_str(const char *s)
93: {
94: const char *errstr;
95: u_int id;
96:
97: if (*s != '$')
98: return (NULL);
99:
100: id = strtonum(s + 1, 0, UINT_MAX, &errstr);
101: if (errstr != NULL)
102: return (NULL);
103: return (session_find_by_id(id));
1.25 nicm 104: }
105:
1.38 nicm 106: /* Find session by id. */
1.25 nicm 107: struct session *
1.38 nicm 108: session_find_by_id(u_int id)
1.25 nicm 109: {
1.1 nicm 110: struct session *s;
111:
1.25 nicm 112: RB_FOREACH(s, sessions, &sessions) {
1.38 nicm 113: if (s->id == id)
1.1 nicm 114: return (s);
115: }
116: return (NULL);
117: }
118:
119: /* Create a new session. */
120: struct session *
1.72 ! nicm 121: session_create(const char *prefix, const char *name, int argc, char **argv,
! 122: const char *path, const char *cwd, struct environ *env, struct termios *tio,
! 123: int idx, u_int sx, u_int sy, char **cause)
1.1 nicm 124: {
125: struct session *s;
1.44 nicm 126: struct winlink *wl;
1.1 nicm 127:
1.52 nicm 128: s = xcalloc(1, sizeof *s);
1.50 nicm 129: s->references = 1;
1.1 nicm 130: s->flags = 0;
1.7 nicm 131:
1.58 nicm 132: s->cwd = xstrdup(cwd);
1.19 nicm 133:
1.1 nicm 134: s->curw = NULL;
1.11 nicm 135: TAILQ_INIT(&s->lastw);
1.1 nicm 136: RB_INIT(&s->windows);
1.7 nicm 137:
1.57 nicm 138: s->environ = environ_create();
1.3 nicm 139: if (env != NULL)
1.57 nicm 140: environ_copy(env, s->environ);
1.61 nicm 141:
1.56 nicm 142: s->options = options_create(global_s_options);
1.61 nicm 143: s->hooks = hooks_create(global_hooks);
1.71 nicm 144:
145: status_update_saved(s);
1.8 nicm 146:
147: s->tio = NULL;
148: if (tio != NULL) {
149: s->tio = xmalloc(sizeof *s->tio);
150: memcpy(s->tio, tio, sizeof *s->tio);
151: }
1.1 nicm 152:
153: s->sx = sx;
154: s->sy = sy;
155:
1.32 nicm 156: if (name != NULL) {
1.1 nicm 157: s->name = xstrdup(name);
1.38 nicm 158: s->id = next_session_id++;
1.32 nicm 159: } else {
160: s->name = NULL;
161: do {
1.38 nicm 162: s->id = next_session_id++;
1.46 nicm 163: free(s->name);
1.72 ! nicm 164: if (prefix != NULL)
! 165: xasprintf(&s->name, "%s-%u", prefix, s->id);
! 166: else
! 167: xasprintf(&s->name, "%u", s->id);
1.32 nicm 168: } while (RB_FIND(sessions, &sessions, s) != NULL);
169: }
1.25 nicm 170: RB_INSERT(sessions, &sessions, s);
1.15 nicm 171:
1.59 nicm 172: log_debug("new session %s $%u", s->name, s->id);
173:
1.52 nicm 174: if (gettimeofday(&s->creation_time, NULL) != 0)
175: fatal("gettimeofday failed");
176: session_update_activity(s, &s->creation_time);
177:
1.44 nicm 178: if (argc >= 0) {
179: wl = session_new(s, NULL, argc, argv, path, cwd, idx, cause);
180: if (wl == NULL) {
1.11 nicm 181: session_destroy(s);
182: return (NULL);
183: }
184: session_select(s, RB_ROOT(&s->windows)->idx);
1.1 nicm 185: }
186:
187: log_debug("session %s created", s->name);
188:
189: return (s);
190: }
191:
1.50 nicm 192: /* Remove a reference from a session. */
193: void
194: session_unref(struct session *s)
195: {
196: log_debug("session %s has %d references", s->name, s->references);
197:
198: s->references--;
199: if (s->references == 0)
200: event_once(-1, EV_TIMEOUT, session_free, s, NULL);
201: }
202:
203: /* Free session. */
1.63 nicm 204: static void
1.60 nicm 205: session_free(__unused int fd, __unused short events, void *arg)
1.50 nicm 206: {
207: struct session *s = arg;
208:
1.55 nicm 209: log_debug("session %s freed (%d references)", s->name, s->references);
1.50 nicm 210:
1.53 nicm 211: if (s->references == 0) {
1.57 nicm 212: environ_free(s->environ);
1.61 nicm 213:
1.56 nicm 214: options_free(s->options);
1.61 nicm 215: hooks_free(s->hooks);
1.56 nicm 216:
1.53 nicm 217: free(s->name);
1.50 nicm 218: free(s);
1.53 nicm 219: }
1.50 nicm 220: }
221:
1.1 nicm 222: /* Destroy a session. */
223: void
224: session_destroy(struct session *s)
225: {
1.33 nicm 226: struct winlink *wl;
1.39 nicm 227:
1.1 nicm 228: log_debug("session %s destroyed", s->name);
1.66 nicm 229: s->curw = NULL;
1.1 nicm 230:
1.25 nicm 231: RB_REMOVE(sessions, &sessions, s);
1.68 nicm 232: notify_session("session-closed", s);
1.1 nicm 233:
1.36 nicm 234: free(s->tio);
1.8 nicm 235:
1.52 nicm 236: if (event_initialized(&s->lock_timer))
237: event_del(&s->lock_timer);
238:
1.11 nicm 239: session_group_remove(s);
1.1 nicm 240:
1.11 nicm 241: while (!TAILQ_EMPTY(&s->lastw))
242: winlink_stack_remove(&s->lastw, TAILQ_FIRST(&s->lastw));
1.33 nicm 243: while (!RB_EMPTY(&s->windows)) {
244: wl = RB_ROOT(&s->windows);
1.68 nicm 245: notify_session_window("window-unlinked", s, wl->window);
1.33 nicm 246: winlink_remove(&s->windows, wl);
247: }
1.1 nicm 248:
1.58 nicm 249: free((void *)s->cwd);
1.15 nicm 250:
1.50 nicm 251: session_unref(s);
1.31 nicm 252: }
253:
1.42 nicm 254: /* Check a session name is valid: not empty and no colons or periods. */
1.31 nicm 255: int
256: session_check_name(const char *name)
257: {
1.42 nicm 258: return (*name != '\0' && name[strcspn(name, ":.")] == '\0');
1.27 nicm 259: }
260:
1.52 nicm 261: /* Lock session if it has timed out. */
1.63 nicm 262: static void
1.60 nicm 263: session_lock_timer(__unused int fd, __unused short events, void *arg)
1.52 nicm 264: {
265: struct session *s = arg;
266:
267: if (s->flags & SESSION_UNATTACHED)
268: return;
269:
270: log_debug("session %s locked, activity time %lld", s->name,
271: (long long)s->activity_time.tv_sec);
272:
273: server_lock_session(s);
274: recalculate_sizes();
275: }
276:
1.51 nicm 277: /* Update activity time. */
1.27 nicm 278: void
1.51 nicm 279: session_update_activity(struct session *s, struct timeval *from)
1.27 nicm 280: {
1.51 nicm 281: struct timeval *last = &s->last_activity_time;
1.52 nicm 282: struct timeval tv;
1.51 nicm 283:
284: memcpy(last, &s->activity_time, sizeof *last);
285: if (from == NULL)
286: gettimeofday(&s->activity_time, NULL);
287: else
288: memcpy(&s->activity_time, from, sizeof s->activity_time);
1.59 nicm 289:
290: log_debug("session %s activity %lld.%06d (last %lld.%06d)", s->name,
291: (long long)s->activity_time.tv_sec, (int)s->activity_time.tv_usec,
292: (long long)last->tv_sec, (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:
299: if (~s->flags & SESSION_UNATTACHED) {
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;
1.1 nicm 350: u_int hlimit;
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:
1.57 nicm 358: env = environ_create();
359: environ_copy(global_environ, env);
360: environ_copy(s->environ, env);
361: server_fill_environ(s, env);
1.1 nicm 362:
1.56 nicm 363: shell = options_get_string(s->options, "default-shell");
1.6 nicm 364: if (*shell == '\0' || areshell(shell))
365: shell = _PATH_BSHELL;
366:
1.56 nicm 367: hlimit = options_get_number(s->options, "history-limit");
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);
1.68 nicm 376: notify_session_window("window-linked", s, w);
1.57 nicm 377: environ_free(env);
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)) {
418: session_destroy(s);
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);
1.1 nicm 552: return (0);
1.11 nicm 553: }
554:
555: /* Find the session group containing a session. */
556: struct session_group *
1.72 ! nicm 557: session_group_contains(struct session *target)
1.11 nicm 558: {
559: struct session_group *sg;
560: struct session *s;
561:
1.72 ! nicm 562: RB_FOREACH(sg, session_groups, &session_groups) {
1.11 nicm 563: TAILQ_FOREACH(s, &sg->sessions, gentry) {
564: if (s == target)
565: return (sg);
566: }
567: }
568: return (NULL);
569: }
570:
1.72 ! nicm 571: /* Find session group by name. */
! 572: struct session_group *
! 573: session_group_find(const char *name)
1.11 nicm 574: {
1.72 ! nicm 575: struct session_group sg;
! 576:
! 577: sg.name = name;
! 578: return (RB_FIND(session_groups, &session_groups, &sg));
! 579: }
1.11 nicm 580:
1.72 ! nicm 581: /* Create a new session group. */
! 582: struct session_group *
! 583: session_group_new(const char *name)
! 584: {
! 585: struct session_group *sg;
! 586:
! 587: if ((sg = session_group_find(name)) != NULL)
! 588: return (sg);
! 589:
! 590: sg = xcalloc(1, sizeof *sg);
! 591: sg->name = xstrdup(name);
! 592: TAILQ_INIT(&sg->sessions);
1.11 nicm 593:
1.72 ! nicm 594: RB_INSERT(session_groups, &session_groups, sg);
! 595: return (sg);
1.11 nicm 596: }
597:
1.72 ! nicm 598: /* Add a session to a session group. */
1.11 nicm 599: void
1.72 ! nicm 600: session_group_add(struct session_group *sg, struct session *s)
1.11 nicm 601: {
1.72 ! nicm 602: if (session_group_contains(s) == NULL)
! 603: TAILQ_INSERT_TAIL(&sg->sessions, s, gentry);
1.11 nicm 604: }
605:
606: /* Remove a session from its group and destroy the group if empty. */
1.64 nicm 607: static void
1.11 nicm 608: session_group_remove(struct session *s)
609: {
610: struct session_group *sg;
611:
1.72 ! nicm 612: if ((sg = session_group_contains(s)) == NULL)
1.11 nicm 613: return;
614: TAILQ_REMOVE(&sg->sessions, s, gentry);
615: if (TAILQ_EMPTY(&sg->sessions)) {
1.72 ! nicm 616: RB_REMOVE(session_groups, &session_groups, sg);
1.36 nicm 617: free(sg);
1.11 nicm 618: }
619: }
620:
1.45 nicm 621: /* Count number of sessions in session group. */
1.64 nicm 622: static u_int
1.45 nicm 623: session_group_count(struct session_group *sg)
624: {
625: struct session *s;
626: u_int n;
627:
628: n = 0;
629: TAILQ_FOREACH(s, &sg->sessions, gentry)
630: n++;
631: return (n);
632: }
633:
1.11 nicm 634: /* Synchronize a session to its session group. */
635: void
636: session_group_synchronize_to(struct session *s)
637: {
638: struct session_group *sg;
639: struct session *target;
640:
1.72 ! nicm 641: if ((sg = session_group_contains(s)) == NULL)
1.11 nicm 642: return;
643:
644: target = NULL;
645: TAILQ_FOREACH(target, &sg->sessions, gentry) {
646: if (target != s)
647: break;
648: }
1.72 ! nicm 649: if (target != NULL)
! 650: session_group_synchronize1(target, s);
1.11 nicm 651: }
652:
653: /* Synchronize a session group to a session. */
654: void
655: session_group_synchronize_from(struct session *target)
656: {
657: struct session_group *sg;
658: struct session *s;
659:
1.72 ! nicm 660: if ((sg = session_group_contains(target)) == NULL)
1.11 nicm 661: return;
662:
663: TAILQ_FOREACH(s, &sg->sessions, gentry) {
664: if (s != target)
665: session_group_synchronize1(target, s);
666: }
667: }
668:
669: /*
670: * Synchronize a session with a target session. This means destroying all
671: * winlinks then recreating them, then updating the current window, last window
672: * stack and alerts.
673: */
1.64 nicm 674: static void
1.11 nicm 675: session_group_synchronize1(struct session *target, struct session *s)
676: {
677: struct winlinks old_windows, *ww;
678: struct winlink_stack old_lastw;
679: struct winlink *wl, *wl2;
680:
681: /* Don't do anything if the session is empty (it'll be destroyed). */
682: ww = &target->windows;
683: if (RB_EMPTY(ww))
684: return;
685:
686: /* If the current window has vanished, move to the next now. */
1.16 nicm 687: if (s->curw != NULL &&
688: winlink_find_by_index(ww, s->curw->idx) == NULL &&
689: session_last(s) != 0 && session_previous(s, 0) != 0)
690: session_next(s, 0);
1.11 nicm 691:
692: /* Save the old pointer and reset it. */
693: memcpy(&old_windows, &s->windows, sizeof old_windows);
694: RB_INIT(&s->windows);
695:
696: /* Link all the windows from the target. */
1.18 nicm 697: RB_FOREACH(wl, winlinks, ww) {
1.30 nicm 698: wl2 = winlink_add(&s->windows, wl->idx);
1.70 nicm 699: wl2->session = s;
1.30 nicm 700: winlink_set_window(wl2, wl->window);
1.68 nicm 701: notify_session_window("window-linked", s, wl2->window);
1.18 nicm 702: wl2->flags |= wl->flags & WINLINK_ALERTFLAGS;
703: }
1.11 nicm 704:
705: /* Fix up the current window. */
706: if (s->curw != NULL)
707: s->curw = winlink_find_by_index(&s->windows, s->curw->idx);
708: else
709: s->curw = winlink_find_by_index(&s->windows, target->curw->idx);
710:
711: /* Fix up the last window stack. */
712: memcpy(&old_lastw, &s->lastw, sizeof old_lastw);
713: TAILQ_INIT(&s->lastw);
714: TAILQ_FOREACH(wl, &old_lastw, sentry) {
715: wl2 = winlink_find_by_index(&s->windows, wl->idx);
716: if (wl2 != NULL)
717: TAILQ_INSERT_TAIL(&s->lastw, wl2, sentry);
718: }
719:
720: /* Then free the old winlinks list. */
721: while (!RB_EMPTY(&old_windows)) {
722: wl = RB_ROOT(&old_windows);
1.45 nicm 723: wl2 = winlink_find_by_window_id(&s->windows, wl->window->id);
724: if (wl2 == NULL)
1.68 nicm 725: notify_session_window("window-unlinked", s, wl->window);
1.13 nicm 726: winlink_remove(&old_windows, wl);
1.11 nicm 727: }
1.34 nicm 728: }
729:
730: /* Renumber the windows across winlinks attached to a specific session. */
731: void
732: session_renumber_windows(struct session *s)
733: {
734: struct winlink *wl, *wl1, *wl_new;
735: struct winlinks old_wins;
736: struct winlink_stack old_lastw;
737: int new_idx, new_curw_idx;
738:
739: /* Save and replace old window list. */
740: memcpy(&old_wins, &s->windows, sizeof old_wins);
741: RB_INIT(&s->windows);
742:
743: /* Start renumbering from the base-index if it's set. */
1.56 nicm 744: new_idx = options_get_number(s->options, "base-index");
1.34 nicm 745: new_curw_idx = 0;
746:
747: /* Go through the winlinks and assign new indexes. */
748: RB_FOREACH(wl, winlinks, &old_wins) {
749: wl_new = winlink_add(&s->windows, new_idx);
1.70 nicm 750: wl_new->session = s;
1.34 nicm 751: winlink_set_window(wl_new, wl->window);
752: wl_new->flags |= wl->flags & WINLINK_ALERTFLAGS;
753:
754: if (wl == s->curw)
755: new_curw_idx = wl_new->idx;
756:
757: new_idx++;
758: }
759:
760: /* Fix the stack of last windows now. */
761: memcpy(&old_lastw, &s->lastw, sizeof old_lastw);
762: TAILQ_INIT(&s->lastw);
763: TAILQ_FOREACH(wl, &old_lastw, sentry) {
1.40 nicm 764: wl_new = winlink_find_by_window(&s->windows, wl->window);
1.34 nicm 765: if (wl_new != NULL)
766: TAILQ_INSERT_TAIL(&s->lastw, wl_new, sentry);
767: }
768:
769: /* Set the current window. */
770: s->curw = winlink_find_by_index(&s->windows, new_curw_idx);
771:
772: /* Free the old winlinks (reducing window references too). */
773: RB_FOREACH_SAFE(wl, winlinks, &old_wins, wl1)
774: winlink_remove(&old_wins, wl);
1.1 nicm 775: }
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