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
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
|
# SOME DESCRIPTIVE TITLE
# Copyright (C) YEAR Free Software Foundation, Inc.
# This file is distributed under the same license as the PACKAGE package.
# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
#
#, fuzzy
msgid ""
msgstr ""
"Project-Id-Version: PACKAGE VERSION\n"
"POT-Creation-Date: 2024-03-01 17:04+0100\n"
"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
"Language-Team: LANGUAGE <LL@li.org>\n"
"Language: \n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
#. type: TH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "pthread_cleanup_push"
msgstr ""
#. type: TH
#: archlinux fedora-40 fedora-rawhide mageia-cauldron
#, no-wrap
msgid "2023-10-31"
msgstr ""
#. type: TH
#: archlinux fedora-40 fedora-rawhide mageia-cauldron
#, no-wrap
msgid "Linux man-pages 6.06"
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "NAME"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"pthread_cleanup_push, pthread_cleanup_pop - push and pop thread cancelation "
"clean-up handlers"
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "LIBRARY"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "POSIX threads library (I<libpthread>, I<-lpthread>)"
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "SYNOPSIS"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<#include E<lt>pthread.hE<gt>>\n"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid ""
"B<void pthread_cleanup_push(void (*>I<routine>B<)(void *), void *>I<arg>B<);>\n"
"B<void pthread_cleanup_pop(int >I<execute>B<);>\n"
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "DESCRIPTION"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"These functions manipulate the calling thread's stack of thread-cancelation "
"clean-up handlers. A clean-up handler is a function that is automatically "
"executed when a thread is canceled (or in various other circumstances "
"described below); it might, for example, unlock a mutex so that it becomes "
"available to other threads in the process."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The B<pthread_cleanup_push>() function pushes I<routine> onto the top of "
"the stack of clean-up handlers. When I<routine> is later invoked, it will "
"be given I<arg> as its argument."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The B<pthread_cleanup_pop>() function removes the routine at the top of the "
"stack of clean-up handlers, and optionally executes it if I<execute> is "
"nonzero."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"A cancelation clean-up handler is popped from the stack and executed in the "
"following circumstances:"
msgstr ""
#. type: IP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "\\[bu]"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"When a thread is canceled, all of the stacked clean-up handlers are popped "
"and executed in the reverse of the order in which they were pushed onto the "
"stack."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"When a thread terminates by calling B<pthread_exit>(3), all clean-up "
"handlers are executed as described in the preceding point. (Clean-up "
"handlers are I<not> called if the thread terminates by performing a "
"I<return> from the thread start function.)"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"When a thread calls B<pthread_cleanup_pop>() with a nonzero I<execute> "
"argument, the top-most clean-up handler is popped and executed."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"POSIX.1 permits B<pthread_cleanup_push>() and B<pthread_cleanup_pop>() to "
"be implemented as macros that expand to text containing \\[aq]B<{>\\[aq] and "
"\\[aq]B<}>\\[aq], respectively. For this reason, the caller must ensure "
"that calls to these functions are paired within the same function, and at "
"the same lexical nesting level. (In other words, a clean-up handler is "
"established only during the execution of a specified section of code.)"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Calling B<longjmp>(3) (B<siglongjmp>(3)) produces undefined results if any "
"call has been made to B<pthread_cleanup_push>() or "
"B<pthread_cleanup_pop>() without the matching call of the pair since the "
"jump buffer was filled by B<setjmp>(3) (B<sigsetjmp>(3)). Likewise, "
"calling B<longjmp>(3) (B<siglongjmp>(3)) from inside a clean-up handler "
"produces undefined results unless the jump buffer was also filled by "
"B<setjmp>(3) (B<sigsetjmp>(3)) inside the handler."
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "RETURN VALUE"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "These functions do not return a value."
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "ERRORS"
msgstr ""
#. #-#-#-#-# archlinux: pthread_cleanup_push.3.pot (PACKAGE VERSION) #-#-#-#-#
#. type: Plain text
#. #-#-#-#-# debian-bookworm: pthread_cleanup_push.3.pot (PACKAGE VERSION) #-#-#-#-#
#. SH VERSIONS
#. Available since glibc 2.0
#. type: Plain text
#. #-#-#-#-# debian-unstable: pthread_cleanup_push.3.pot (PACKAGE VERSION) #-#-#-#-#
#. type: Plain text
#. #-#-#-#-# fedora-40: pthread_cleanup_push.3.pot (PACKAGE VERSION) #-#-#-#-#
#. type: Plain text
#. #-#-#-#-# fedora-rawhide: pthread_cleanup_push.3.pot (PACKAGE VERSION) #-#-#-#-#
#. type: Plain text
#. #-#-#-#-# mageia-cauldron: pthread_cleanup_push.3.pot (PACKAGE VERSION) #-#-#-#-#
#. type: Plain text
#. #-#-#-#-# opensuse-leap-15-6: pthread_cleanup_push.3.pot (PACKAGE VERSION) #-#-#-#-#
#. type: Plain text
#. #-#-#-#-# opensuse-tumbleweed: pthread_cleanup_push.3.pot (PACKAGE VERSION) #-#-#-#-#
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "There are no errors."
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "ATTRIBUTES"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"For an explanation of the terms used in this section, see B<attributes>(7)."
msgstr ""
#. type: tbl table
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "Interface"
msgstr ""
#. type: tbl table
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "Attribute"
msgstr ""
#. type: tbl table
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "Value"
msgstr ""
#. type: tbl table
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-tumbleweed
#, no-wrap
msgid ".na\n"
msgstr ""
#. type: tbl table
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-tumbleweed
#, no-wrap
msgid ".nh\n"
msgstr ""
#. type: tbl table
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid ""
"B<pthread_cleanup_push>(),\n"
"B<pthread_cleanup_pop>()"
msgstr ""
#. type: tbl table
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "Thread safety"
msgstr ""
#. type: tbl table
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "MT-Safe"
msgstr ""
#. type: SH
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "VERSIONS"
msgstr ""
#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"On glibc, the B<pthread_cleanup_push>() and B<pthread_cleanup_pop>() "
"functions I<are> implemented as macros that expand to text containing "
"\\[aq]B<{>\\[aq] and \\[aq]B<}>\\[aq], respectively. This means that "
"variables declared within the scope of paired calls to these functions will "
"be visible within only that scope."
msgstr ""
#. The text was actually added in the 2004 TC2
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"POSIX.1 says that the effect of using I<return>, I<break>, I<continue>, or "
"I<goto> to prematurely leave a block bracketed B<pthread_cleanup_push>() "
"and B<pthread_cleanup_pop>() is undefined. Portable applications should "
"avoid doing this."
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "STANDARDS"
msgstr ""
#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
msgid "POSIX.1-2008."
msgstr ""
#. type: SH
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "HISTORY"
msgstr ""
#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
msgid "POSIX.1-2001. glibc 2.0."
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "EXAMPLES"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The program below provides a simple example of the use of the functions "
"described in this page. The program creates a thread that executes a loop "
"bracketed by B<pthread_cleanup_push>() and B<pthread_cleanup_pop>(). This "
"loop increments a global variable, I<cnt>, once each second. Depending on "
"what command-line arguments are supplied, the main thread sends the other "
"thread a cancelation request, or sets a global variable that causes the "
"other thread to exit its loop and terminate normally (by doing a I<return>)."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"In the following shell session, the main thread sends a cancelation request "
"to the other thread:"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid ""
"$ B<./a.out>\n"
"New thread started\n"
"cnt = 0\n"
"cnt = 1\n"
"Canceling thread\n"
"Called clean-up handler\n"
"Thread was canceled; cnt = 0\n"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"From the above, we see that the thread was canceled, and that the "
"cancelation clean-up handler was called and it reset the value of the global "
"variable I<cnt> to 0."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"In the next run, the main program sets a global variable that causes other "
"thread to terminate normally:"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid ""
"$ B<./a.out x>\n"
"New thread started\n"
"cnt = 0\n"
"cnt = 1\n"
"Thread terminated normally; cnt = 2\n"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"From the above, we see that the clean-up handler was not executed (because "
"I<cleanup_pop_arg> was 0), and therefore the value of I<cnt> was not reset."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"In the next run, the main program sets a global variable that causes the "
"other thread to terminate normally, and supplies a nonzero value for "
"I<cleanup_pop_arg>:"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid ""
"$ B<./a.out x 1>\n"
"New thread started\n"
"cnt = 0\n"
"cnt = 1\n"
"Called clean-up handler\n"
"Thread terminated normally; cnt = 0\n"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"In the above, we see that although the thread was not canceled, the clean-up "
"handler was executed, because the argument given to "
"B<pthread_cleanup_pop>() was nonzero."
msgstr ""
#. type: SS
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "Program source"
msgstr ""
#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-tumbleweed
#, no-wrap
msgid ""
"#include E<lt>errno.hE<gt>\n"
"#include E<lt>pthread.hE<gt>\n"
"#include E<lt>stdio.hE<gt>\n"
"#include E<lt>stdlib.hE<gt>\n"
"#include E<lt>sys/types.hE<gt>\n"
"#include E<lt>unistd.hE<gt>\n"
"\\&\n"
"#define handle_error_en(en, msg) \\e\n"
" do { errno = en; perror(msg); exit(EXIT_FAILURE); } while (0)\n"
"\\&\n"
"static int done = 0;\n"
"static int cleanup_pop_arg = 0;\n"
"static int cnt = 0;\n"
"\\&\n"
"static void\n"
"cleanup_handler(void *arg)\n"
"{\n"
" printf(\"Called clean-up handler\\en\");\n"
" cnt = 0;\n"
"}\n"
"\\&\n"
"static void *\n"
"thread_start(void *arg)\n"
"{\n"
" time_t curr;\n"
"\\&\n"
" printf(\"New thread started\\en\");\n"
"\\&\n"
" pthread_cleanup_push(cleanup_handler, NULL);\n"
"\\&\n"
" curr = time(NULL);\n"
"\\&\n"
" while (!done) {\n"
" pthread_testcancel(); /* A cancelation point */\n"
" if (curr E<lt> time(NULL)) {\n"
" curr = time(NULL);\n"
" printf(\"cnt = %d\\en\", cnt); /* A cancelation point */\n"
" cnt++;\n"
" }\n"
" }\n"
"\\&\n"
" pthread_cleanup_pop(cleanup_pop_arg);\n"
" return NULL;\n"
"}\n"
"\\&\n"
"int\n"
"main(int argc, char *argv[])\n"
"{\n"
" pthread_t thr;\n"
" int s;\n"
" void *res;\n"
"\\&\n"
" s = pthread_create(&thr, NULL, thread_start, NULL);\n"
" if (s != 0)\n"
" handle_error_en(s, \"pthread_create\");\n"
"\\&\n"
" sleep(2); /* Allow new thread to run a while */\n"
"\\&\n"
" if (argc E<gt> 1) {\n"
" if (argc E<gt> 2)\n"
" cleanup_pop_arg = atoi(argv[2]);\n"
" done = 1;\n"
"\\&\n"
" } else {\n"
" printf(\"Canceling thread\\en\");\n"
" s = pthread_cancel(thr);\n"
" if (s != 0)\n"
" handle_error_en(s, \"pthread_cancel\");\n"
" }\n"
"\\&\n"
" s = pthread_join(thr, &res);\n"
" if (s != 0)\n"
" handle_error_en(s, \"pthread_join\");\n"
"\\&\n"
" if (res == PTHREAD_CANCELED)\n"
" printf(\"Thread was canceled; cnt = %d\\en\", cnt);\n"
" else\n"
" printf(\"Thread terminated normally; cnt = %d\\en\", cnt);\n"
" exit(EXIT_SUCCESS);\n"
"}\n"
msgstr ""
#. SRC END
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "SEE ALSO"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"B<pthread_cancel>(3), B<pthread_cleanup_push_defer_np>(3), "
"B<pthread_setcancelstate>(3), B<pthread_testcancel>(3), B<pthreads>(7)"
msgstr ""
#. type: TH
#: debian-bookworm
#, no-wrap
msgid "2023-02-05"
msgstr ""
#. type: TH
#: debian-bookworm
#, no-wrap
msgid "Linux man-pages 6.03"
msgstr ""
#. type: Plain text
#: debian-bookworm
msgid "POSIX.1-2001, POSIX.1-2008."
msgstr ""
#. type: SH
#: debian-bookworm
#, no-wrap
msgid "NOTES"
msgstr ""
#. type: Plain text
#: debian-bookworm
msgid ""
"On Linux, the B<pthread_cleanup_push>() and B<pthread_cleanup_pop>() "
"functions I<are> implemented as macros that expand to text containing "
"\\[aq]B<{>\\[aq] and \\[aq]B<}>\\[aq], respectively. This means that "
"variables declared within the scope of paired calls to these functions will "
"be visible within only that scope."
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"#include E<lt>errno.hE<gt>\n"
"#include E<lt>pthread.hE<gt>\n"
"#include E<lt>stdio.hE<gt>\n"
"#include E<lt>stdlib.hE<gt>\n"
"#include E<lt>sys/types.hE<gt>\n"
"#include E<lt>unistd.hE<gt>\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"#define handle_error_en(en, msg) \\e\n"
" do { errno = en; perror(msg); exit(EXIT_FAILURE); } while (0)\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"static int done = 0;\n"
"static int cleanup_pop_arg = 0;\n"
"static int cnt = 0;\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"static void\n"
"cleanup_handler(void *arg)\n"
"{\n"
" printf(\"Called clean-up handler\\en\");\n"
" cnt = 0;\n"
"}\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"static void *\n"
"thread_start(void *arg)\n"
"{\n"
" time_t curr;\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid " printf(\"New thread started\\en\");\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid " pthread_cleanup_push(cleanup_handler, NULL);\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid " curr = time(NULL);\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" while (!done) {\n"
" pthread_testcancel(); /* A cancelation point */\n"
" if (curr E<lt> time(NULL)) {\n"
" curr = time(NULL);\n"
" printf(\"cnt = %d\\en\", cnt); /* A cancelation point */\n"
" cnt++;\n"
" }\n"
" }\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" pthread_cleanup_pop(cleanup_pop_arg);\n"
" return NULL;\n"
"}\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"int\n"
"main(int argc, char *argv[])\n"
"{\n"
" pthread_t thr;\n"
" int s;\n"
" void *res;\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" s = pthread_create(&thr, NULL, thread_start, NULL);\n"
" if (s != 0)\n"
" handle_error_en(s, \"pthread_create\");\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid " sleep(2); /* Allow new thread to run a while */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" if (argc E<gt> 1) {\n"
" if (argc E<gt> 2)\n"
" cleanup_pop_arg = atoi(argv[2]);\n"
" done = 1;\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" } else {\n"
" printf(\"Canceling thread\\en\");\n"
" s = pthread_cancel(thr);\n"
" if (s != 0)\n"
" handle_error_en(s, \"pthread_cancel\");\n"
" }\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" s = pthread_join(thr, &res);\n"
" if (s != 0)\n"
" handle_error_en(s, \"pthread_join\");\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" if (res == PTHREAD_CANCELED)\n"
" printf(\"Thread was canceled; cnt = %d\\en\", cnt);\n"
" else\n"
" printf(\"Thread terminated normally; cnt = %d\\en\", cnt);\n"
" exit(EXIT_SUCCESS);\n"
"}\n"
msgstr ""
#. type: TH
#: debian-unstable opensuse-tumbleweed
#, no-wrap
msgid "2023-07-20"
msgstr ""
#. type: TH
#: debian-unstable opensuse-tumbleweed
#, no-wrap
msgid "Linux man-pages 6.05.01"
msgstr ""
#. type: TH
#: opensuse-leap-15-6
#, no-wrap
msgid "2023-03-30"
msgstr ""
#. type: TH
#: opensuse-leap-15-6
#, no-wrap
msgid "Linux man-pages 6.04"
msgstr ""
|