File: session.c

package info (click to toggle)
tmux 2.8-3
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 2,728 kB
  • sloc: ansic: 41,224; sh: 4,188; awk: 339; makefile: 181
file content (774 lines) | stat: -rw-r--r-- 17,952 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
/* $OpenBSD$ */

/*
 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>
#include <sys/time.h>

#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>

#include "tmux.h"

struct sessions		sessions;
static u_int		next_session_id;
struct session_groups	session_groups = RB_INITIALIZER(&session_groups);

static void	session_free(int, short, void *);

static void	session_lock_timer(int, short, void *);

static struct winlink *session_next_alert(struct winlink *);
static struct winlink *session_previous_alert(struct winlink *);

static void	session_group_remove(struct session *);
static void	session_group_synchronize1(struct session *, struct session *);

int
session_cmp(struct session *s1, struct session *s2)
{
	return (strcmp(s1->name, s2->name));
}
RB_GENERATE(sessions, session, entry, session_cmp);

static int
session_group_cmp(struct session_group *s1, struct session_group *s2)
{
	return (strcmp(s1->name, s2->name));
}
RB_GENERATE_STATIC(session_groups, session_group, entry, session_group_cmp);

/*
 * Find if session is still alive. This is true if it is still on the global
 * sessions list.
 */
int
session_alive(struct session *s)
{
	struct session *s_loop;

	RB_FOREACH(s_loop, sessions, &sessions) {
		if (s_loop == s)
			return (1);
	}
	return (0);
}

/* Find session by name. */
struct session *
session_find(const char *name)
{
	struct session	s;

	s.name = (char *) name;
	return (RB_FIND(sessions, &sessions, &s));
}

/* Find session by id parsed from a string. */
struct session *
session_find_by_id_str(const char *s)
{
	const char	*errstr;
	u_int		 id;

	if (*s != '$')
		return (NULL);

	id = strtonum(s + 1, 0, UINT_MAX, &errstr);
	if (errstr != NULL)
		return (NULL);
	return (session_find_by_id(id));
}

/* Find session by id. */
struct session *
session_find_by_id(u_int id)
{
	struct session	*s;

	RB_FOREACH(s, sessions, &sessions) {
		if (s->id == id)
			return (s);
	}
	return (NULL);
}

/* Create a new session. */
struct session *
session_create(const char *prefix, const char *name, int argc, char **argv,
    const char *path, const char *cwd, struct environ *env, struct termios *tio,
    int idx, u_int sx, u_int sy, char **cause)
{
	struct session	*s;
	struct winlink	*wl;

	s = xcalloc(1, sizeof *s);
	s->references = 1;
	s->flags = 0;

	s->cwd = xstrdup(cwd);

	s->curw = NULL;
	TAILQ_INIT(&s->lastw);
	RB_INIT(&s->windows);

	s->environ = environ_create();
	if (env != NULL)
		environ_copy(env, s->environ);

	s->options = options_create(global_s_options);
	s->hooks = hooks_create(global_hooks);

	status_update_saved(s);

	s->tio = NULL;
	if (tio != NULL) {
		s->tio = xmalloc(sizeof *s->tio);
		memcpy(s->tio, tio, sizeof *s->tio);
	}

	s->sx = sx;
	s->sy = sy;

	if (name != NULL) {
		s->name = xstrdup(name);
		s->id = next_session_id++;
	} else {
		s->name = NULL;
		do {
			s->id = next_session_id++;
			free(s->name);
			if (prefix != NULL)
				xasprintf(&s->name, "%s-%u", prefix, s->id);
			else
				xasprintf(&s->name, "%u", s->id);
		} while (RB_FIND(sessions, &sessions, s) != NULL);
	}
	RB_INSERT(sessions, &sessions, s);

	log_debug("new session %s $%u", s->name, s->id);

	if (gettimeofday(&s->creation_time, NULL) != 0)
		fatal("gettimeofday failed");
	session_update_activity(s, &s->creation_time);

	if (argc >= 0) {
		wl = session_new(s, NULL, argc, argv, path, cwd, idx, cause);
		if (wl == NULL) {
			session_destroy(s, __func__);
			return (NULL);
		}
		session_select(s, RB_ROOT(&s->windows)->idx);
	}

	log_debug("session %s created", s->name);

	return (s);
}

/* Add a reference to a session. */
void
session_add_ref(struct session *s, const char *from)
{
	s->references++;
	log_debug("%s: %s %s, now %d", __func__, s->name, from, s->references);
}

/* Remove a reference from a session. */
void
session_remove_ref(struct session *s, const char *from)
{
	s->references--;
	log_debug("%s: %s %s, now %d", __func__, s->name, from, s->references);

	if (s->references == 0)
		event_once(-1, EV_TIMEOUT, session_free, s, NULL);
}

/* Free session. */
static void
session_free(__unused int fd, __unused short events, void *arg)
{
	struct session	*s = arg;

	log_debug("session %s freed (%d references)", s->name, s->references);

	if (s->references == 0) {
		environ_free(s->environ);

		options_free(s->options);
		hooks_free(s->hooks);

		free(s->name);
		free(s);
	}
}

/* Destroy a session. */
void
session_destroy(struct session *s, const char *from)
{
	struct winlink	*wl;

	log_debug("session %s destroyed (%s)", s->name, from);
	s->curw = NULL;

	RB_REMOVE(sessions, &sessions, s);
	notify_session("session-closed", s);

	free(s->tio);

	if (event_initialized(&s->lock_timer))
		event_del(&s->lock_timer);

	session_group_remove(s);

	while (!TAILQ_EMPTY(&s->lastw))
		winlink_stack_remove(&s->lastw, TAILQ_FIRST(&s->lastw));
	while (!RB_EMPTY(&s->windows)) {
		wl = RB_ROOT(&s->windows);
		notify_session_window("window-unlinked", s, wl->window);
		winlink_remove(&s->windows, wl);
	}

	free((void *)s->cwd);

	session_remove_ref(s, __func__);
}

/* Check a session name is valid: not empty and no colons or periods. */
int
session_check_name(const char *name)
{
	return (*name != '\0' && name[strcspn(name, ":.")] == '\0');
}

/* Lock session if it has timed out. */
static void
session_lock_timer(__unused int fd, __unused short events, void *arg)
{
	struct session	*s = arg;

	if (s->flags & SESSION_UNATTACHED)
		return;

	log_debug("session %s locked, activity time %lld", s->name,
	    (long long)s->activity_time.tv_sec);

	server_lock_session(s);
	recalculate_sizes();
}

/* Update activity time. */
void
session_update_activity(struct session *s, struct timeval *from)
{
	struct timeval	*last = &s->last_activity_time;
	struct timeval	 tv;

	memcpy(last, &s->activity_time, sizeof *last);
	if (from == NULL)
		gettimeofday(&s->activity_time, NULL);
	else
		memcpy(&s->activity_time, from, sizeof s->activity_time);

	log_debug("session $%u %s activity %lld.%06d (last %lld.%06d)", s->id,
	    s->name, (long long)s->activity_time.tv_sec,
	    (int)s->activity_time.tv_usec, (long long)last->tv_sec,
	    (int)last->tv_usec);

	if (evtimer_initialized(&s->lock_timer))
		evtimer_del(&s->lock_timer);
	else
		evtimer_set(&s->lock_timer, session_lock_timer, s);

	if (~s->flags & SESSION_UNATTACHED) {
		timerclear(&tv);
		tv.tv_sec = options_get_number(s->options, "lock-after-time");
		if (tv.tv_sec != 0)
			evtimer_add(&s->lock_timer, &tv);
	}
}

/* Find the next usable session. */
struct session *
session_next_session(struct session *s)
{
	struct session *s2;

	if (RB_EMPTY(&sessions) || !session_alive(s))
		return (NULL);

	s2 = RB_NEXT(sessions, &sessions, s);
	if (s2 == NULL)
		s2 = RB_MIN(sessions, &sessions);
	if (s2 == s)
		return (NULL);
	return (s2);
}

/* Find the previous usable session. */
struct session *
session_previous_session(struct session *s)
{
	struct session *s2;

	if (RB_EMPTY(&sessions) || !session_alive(s))
		return (NULL);

	s2 = RB_PREV(sessions, &sessions, s);
	if (s2 == NULL)
		s2 = RB_MAX(sessions, &sessions);
	if (s2 == s)
		return (NULL);
	return (s2);
}

/* Create a new window on a session. */
struct winlink *
session_new(struct session *s, const char *name, int argc, char **argv,
    const char *path, const char *cwd, int idx, char **cause)
{
	struct window	*w;
	struct winlink	*wl;
	struct environ	*env;
	const char	*shell;
	u_int		 hlimit;

	if ((wl = winlink_add(&s->windows, idx)) == NULL) {
		xasprintf(cause, "index in use: %d", idx);
		return (NULL);
	}
	wl->session = s;

	shell = options_get_string(s->options, "default-shell");
	if (*shell == '\0' || areshell(shell))
		shell = _PATH_BSHELL;

	hlimit = options_get_number(s->options, "history-limit");
	env = environ_for_session(s, 0);
	w = window_create_spawn(name, argc, argv, path, shell, cwd, env, s->tio,
	    s->sx, s->sy, hlimit, cause);
	if (w == NULL) {
		winlink_remove(&s->windows, wl);
		environ_free(env);
		return (NULL);
	}
	winlink_set_window(wl, w);
	environ_free(env);
	notify_session_window("window-linked", s, w);

	session_group_synchronize_from(s);
	return (wl);
}

/* Attach a window to a session. */
struct winlink *
session_attach(struct session *s, struct window *w, int idx, char **cause)
{
	struct winlink	*wl;

	if ((wl = winlink_add(&s->windows, idx)) == NULL) {
		xasprintf(cause, "index in use: %d", idx);
		return (NULL);
	}
	wl->session = s;
	winlink_set_window(wl, w);
	notify_session_window("window-linked", s, w);

	session_group_synchronize_from(s);
	return (wl);
}

/* Detach a window from a session. */
int
session_detach(struct session *s, struct winlink *wl)
{
	if (s->curw == wl &&
	    session_last(s) != 0 &&
	    session_previous(s, 0) != 0)
		session_next(s, 0);

	wl->flags &= ~WINLINK_ALERTFLAGS;
	notify_session_window("window-unlinked", s, wl->window);
	winlink_stack_remove(&s->lastw, wl);
	winlink_remove(&s->windows, wl);

	session_group_synchronize_from(s);

	if (RB_EMPTY(&s->windows)) {
		session_destroy(s, __func__);
		return (1);
	}
	return (0);
}

/* Return if session has window. */
int
session_has(struct session *s, struct window *w)
{
	struct winlink	*wl;

	TAILQ_FOREACH(wl, &w->winlinks, wentry) {
		if (wl->session == s)
			return (1);
	}
	return (0);
}

/*
 * Return 1 if a window is linked outside this session (not including session
 * groups). The window must be in this session!
 */
int
session_is_linked(struct session *s, struct window *w)
{
	struct session_group	*sg;

	if ((sg = session_group_contains(s)) != NULL)
		return (w->references != session_group_count(sg));
	return (w->references != 1);
}

static struct winlink *
session_next_alert(struct winlink *wl)
{
	while (wl != NULL) {
		if (wl->flags & WINLINK_ALERTFLAGS)
			break;
		wl = winlink_next(wl);
	}
	return (wl);
}

/* Move session to next window. */
int
session_next(struct session *s, int alert)
{
	struct winlink	*wl;

	if (s->curw == NULL)
		return (-1);

	wl = winlink_next(s->curw);
	if (alert)
		wl = session_next_alert(wl);
	if (wl == NULL) {
		wl = RB_MIN(winlinks, &s->windows);
		if (alert && ((wl = session_next_alert(wl)) == NULL))
			return (-1);
	}
	return (session_set_current(s, wl));
}

static struct winlink *
session_previous_alert(struct winlink *wl)
{
	while (wl != NULL) {
		if (wl->flags & WINLINK_ALERTFLAGS)
			break;
		wl = winlink_previous(wl);
	}
	return (wl);
}

/* Move session to previous window. */
int
session_previous(struct session *s, int alert)
{
	struct winlink	*wl;

	if (s->curw == NULL)
		return (-1);

	wl = winlink_previous(s->curw);
	if (alert)
		wl = session_previous_alert(wl);
	if (wl == NULL) {
		wl = RB_MAX(winlinks, &s->windows);
		if (alert && (wl = session_previous_alert(wl)) == NULL)
			return (-1);
	}
	return (session_set_current(s, wl));
}

/* Move session to specific window. */
int
session_select(struct session *s, int idx)
{
	struct winlink	*wl;

	wl = winlink_find_by_index(&s->windows, idx);
	return (session_set_current(s, wl));
}

/* Move session to last used window. */
int
session_last(struct session *s)
{
	struct winlink	*wl;

	wl = TAILQ_FIRST(&s->lastw);
	if (wl == NULL)
		return (-1);
	if (wl == s->curw)
		return (1);

	return (session_set_current(s, wl));
}

/* Set current winlink to wl .*/
int
session_set_current(struct session *s, struct winlink *wl)
{
	if (wl == NULL)
		return (-1);
	if (wl == s->curw)
		return (1);

	winlink_stack_remove(&s->lastw, wl);
	winlink_stack_push(&s->lastw, s->curw);
	s->curw = wl;
	winlink_clear_flags(wl);
	window_update_activity(wl->window);
	notify_session("session-window-changed", s);
	return (0);
}

/* Find the session group containing a session. */
struct session_group *
session_group_contains(struct session *target)
{
	struct session_group	*sg;
	struct session		*s;

	RB_FOREACH(sg, session_groups, &session_groups) {
		TAILQ_FOREACH(s, &sg->sessions, gentry) {
			if (s == target)
				return (sg);
		}
	}
	return (NULL);
}

/* Find session group by name. */
struct session_group *
session_group_find(const char *name)
{
	struct session_group	sg;

	sg.name = name;
	return (RB_FIND(session_groups, &session_groups, &sg));
}

/* Create a new session group. */
struct session_group *
session_group_new(const char *name)
{
	struct session_group	*sg;

	if ((sg = session_group_find(name)) != NULL)
		return (sg);

	sg = xcalloc(1, sizeof *sg);
	sg->name = xstrdup(name);
	TAILQ_INIT(&sg->sessions);

	RB_INSERT(session_groups, &session_groups, sg);
	return (sg);
}

/* Add a session to a session group. */
void
session_group_add(struct session_group *sg, struct session *s)
{
	if (session_group_contains(s) == NULL)
		TAILQ_INSERT_TAIL(&sg->sessions, s, gentry);
}

/* Remove a session from its group and destroy the group if empty. */
static void
session_group_remove(struct session *s)
{
	struct session_group	*sg;

	if ((sg = session_group_contains(s)) == NULL)
		return;
	TAILQ_REMOVE(&sg->sessions, s, gentry);
	if (TAILQ_EMPTY(&sg->sessions)) {
		RB_REMOVE(session_groups, &session_groups, sg);
		free(sg);
	}
}

/* Count number of sessions in session group. */
u_int
session_group_count(struct session_group *sg)
{
	struct session	*s;
	u_int		 n;

	n = 0;
	TAILQ_FOREACH(s, &sg->sessions, gentry)
	    n++;
	return (n);
}

/* Synchronize a session to its session group. */
void
session_group_synchronize_to(struct session *s)
{
	struct session_group	*sg;
	struct session		*target;

	if ((sg = session_group_contains(s)) == NULL)
		return;

	target = NULL;
	TAILQ_FOREACH(target, &sg->sessions, gentry) {
		if (target != s)
			break;
	}
	if (target != NULL)
		session_group_synchronize1(target, s);
}

/* Synchronize a session group to a session. */
void
session_group_synchronize_from(struct session *target)
{
	struct session_group	*sg;
	struct session		*s;

	if ((sg = session_group_contains(target)) == NULL)
		return;

	TAILQ_FOREACH(s, &sg->sessions, gentry) {
		if (s != target)
			session_group_synchronize1(target, s);
	}
}

/*
 * Synchronize a session with a target session. This means destroying all
 * winlinks then recreating them, then updating the current window, last window
 * stack and alerts.
 */
static void
session_group_synchronize1(struct session *target, struct session *s)
{
	struct winlinks		 old_windows, *ww;
	struct winlink_stack	 old_lastw;
	struct winlink		*wl, *wl2;

	/* Don't do anything if the session is empty (it'll be destroyed). */
	ww = &target->windows;
	if (RB_EMPTY(ww))
		return;

	/* If the current window has vanished, move to the next now. */
	if (s->curw != NULL &&
	    winlink_find_by_index(ww, s->curw->idx) == NULL &&
	    session_last(s) != 0 && session_previous(s, 0) != 0)
		session_next(s, 0);

	/* Save the old pointer and reset it. */
	memcpy(&old_windows, &s->windows, sizeof old_windows);
	RB_INIT(&s->windows);

	/* Link all the windows from the target. */
	RB_FOREACH(wl, winlinks, ww) {
		wl2 = winlink_add(&s->windows, wl->idx);
		wl2->session = s;
		winlink_set_window(wl2, wl->window);
		notify_session_window("window-linked", s, wl2->window);
		wl2->flags |= wl->flags & WINLINK_ALERTFLAGS;
	}

	/* Fix up the current window. */
	if (s->curw != NULL)
		s->curw = winlink_find_by_index(&s->windows, s->curw->idx);
	else
		s->curw = winlink_find_by_index(&s->windows, target->curw->idx);

	/* Fix up the last window stack. */
	memcpy(&old_lastw, &s->lastw, sizeof old_lastw);
	TAILQ_INIT(&s->lastw);
	TAILQ_FOREACH(wl, &old_lastw, sentry) {
		wl2 = winlink_find_by_index(&s->windows, wl->idx);
		if (wl2 != NULL)
			TAILQ_INSERT_TAIL(&s->lastw, wl2, sentry);
	}

	/* Then free the old winlinks list. */
	while (!RB_EMPTY(&old_windows)) {
		wl = RB_ROOT(&old_windows);
		wl2 = winlink_find_by_window_id(&s->windows, wl->window->id);
		if (wl2 == NULL)
			notify_session_window("window-unlinked", s, wl->window);
		winlink_remove(&old_windows, wl);
	}
}

/* Renumber the windows across winlinks attached to a specific session. */
void
session_renumber_windows(struct session *s)
{
	struct winlink		*wl, *wl1, *wl_new;
	struct winlinks		 old_wins;
	struct winlink_stack	 old_lastw;
	int			 new_idx, new_curw_idx;

	/* Save and replace old window list. */
	memcpy(&old_wins, &s->windows, sizeof old_wins);
	RB_INIT(&s->windows);

	/* Start renumbering from the base-index if it's set. */
	new_idx = options_get_number(s->options, "base-index");
	new_curw_idx = 0;

	/* Go through the winlinks and assign new indexes. */
	RB_FOREACH(wl, winlinks, &old_wins) {
		wl_new = winlink_add(&s->windows, new_idx);
		wl_new->session = s;
		winlink_set_window(wl_new, wl->window);
		wl_new->flags |= wl->flags & WINLINK_ALERTFLAGS;

		if (wl == s->curw)
			new_curw_idx = wl_new->idx;

		new_idx++;
	}

	/* Fix the stack of last windows now. */
	memcpy(&old_lastw, &s->lastw, sizeof old_lastw);
	TAILQ_INIT(&s->lastw);
	TAILQ_FOREACH(wl, &old_lastw, sentry) {
		wl_new = winlink_find_by_window(&s->windows, wl->window);
		if (wl_new != NULL)
			TAILQ_INSERT_TAIL(&s->lastw, wl_new, sentry);
	}

	/* Set the current window. */
	s->curw = winlink_find_by_index(&s->windows, new_curw_idx);

	/* Free the old winlinks (reducing window references too). */
	RB_FOREACH_SAFE(wl, winlinks, &old_wins, wl1)
		winlink_remove(&old_wins, wl);
}