-
Notifications
You must be signed in to change notification settings - Fork 5
/
ev.c
5097 lines (4199 loc) · 126 KB
/
ev.c
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
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* libev event processing core, watcher management
*
* Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modifica-
* tion, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Alternatively, the contents of this file may be used under the terms of
* the GNU General Public License ("GPL") version 2 or any later version,
* in which case the provisions of the GPL are applicable instead of
* the above. If you wish to allow the use of your version of this file
* only under the terms of the GPL and not to allow others to use your
* version of this file under the BSD license, indicate your decision
* by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL. If you do not delete the
* provisions above, a recipient may use your version of this file under
* either the BSD or the GPL.
*/
/* this big block deduces configuration from config.h */
#ifndef EV_STANDALONE
# ifdef EV_CONFIG_H
# include EV_CONFIG_H
# else
# include "config.h"
# endif
# if HAVE_FLOOR
# ifndef EV_USE_FLOOR
# define EV_USE_FLOOR 1
# endif
# endif
# if HAVE_CLOCK_SYSCALL
# ifndef EV_USE_CLOCK_SYSCALL
# define EV_USE_CLOCK_SYSCALL 1
# ifndef EV_USE_REALTIME
# define EV_USE_REALTIME 0
# endif
# ifndef EV_USE_MONOTONIC
# define EV_USE_MONOTONIC 1
# endif
# endif
# elif !defined EV_USE_CLOCK_SYSCALL
# define EV_USE_CLOCK_SYSCALL 0
# endif
# if HAVE_CLOCK_GETTIME
# ifndef EV_USE_MONOTONIC
# define EV_USE_MONOTONIC 1
# endif
# ifndef EV_USE_REALTIME
# define EV_USE_REALTIME 0
# endif
# else
# ifndef EV_USE_MONOTONIC
# define EV_USE_MONOTONIC 0
# endif
# ifndef EV_USE_REALTIME
# define EV_USE_REALTIME 0
# endif
# endif
# if HAVE_NANOSLEEP
# ifndef EV_USE_NANOSLEEP
# define EV_USE_NANOSLEEP EV_FEATURE_OS
# endif
# else
# undef EV_USE_NANOSLEEP
# define EV_USE_NANOSLEEP 0
# endif
# if HAVE_SELECT && HAVE_SYS_SELECT_H
# ifndef EV_USE_SELECT
# define EV_USE_SELECT EV_FEATURE_BACKENDS
# endif
# else
# undef EV_USE_SELECT
# define EV_USE_SELECT 0
# endif
# if HAVE_POLL && HAVE_POLL_H
# ifndef EV_USE_POLL
# define EV_USE_POLL EV_FEATURE_BACKENDS
# endif
# else
# undef EV_USE_POLL
# define EV_USE_POLL 0
# endif
# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
# ifndef EV_USE_EPOLL
# define EV_USE_EPOLL EV_FEATURE_BACKENDS
# endif
# else
# undef EV_USE_EPOLL
# define EV_USE_EPOLL 0
# endif
# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
# ifndef EV_USE_KQUEUE
# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
# endif
# else
# undef EV_USE_KQUEUE
# define EV_USE_KQUEUE 0
# endif
# if HAVE_PORT_H && HAVE_PORT_CREATE
# ifndef EV_USE_PORT
# define EV_USE_PORT EV_FEATURE_BACKENDS
# endif
# else
# undef EV_USE_PORT
# define EV_USE_PORT 0
# endif
# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
# ifndef EV_USE_INOTIFY
# define EV_USE_INOTIFY EV_FEATURE_OS
# endif
# else
# undef EV_USE_INOTIFY
# define EV_USE_INOTIFY 0
# endif
# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
# ifndef EV_USE_SIGNALFD
# define EV_USE_SIGNALFD EV_FEATURE_OS
# endif
# else
# undef EV_USE_SIGNALFD
# define EV_USE_SIGNALFD 0
# endif
# if HAVE_EVENTFD
# ifndef EV_USE_EVENTFD
# define EV_USE_EVENTFD EV_FEATURE_OS
# endif
# else
# undef EV_USE_EVENTFD
# define EV_USE_EVENTFD 0
# endif
#endif
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <stddef.h>
#include <stdio.h>
#include <assert.h>
#include <errno.h>
#include <sys/types.h>
#include <time.h>
#include <limits.h>
#include <signal.h>
#ifdef EV_H
# include EV_H
#else
# include "ev.h"
#endif
#if EV_NO_THREADS
# undef EV_NO_SMP
# define EV_NO_SMP 1
# undef ECB_NO_THREADS
# define ECB_NO_THREADS 1
#endif
#if EV_NO_SMP
# undef EV_NO_SMP
# define ECB_NO_SMP 1
#endif
#ifndef _WIN32
# include <sys/time.h>
# include <sys/wait.h>
# include <unistd.h>
#else
# include <io.h>
# define WIN32_LEAN_AND_MEAN
# include <winsock2.h>
# include <windows.h>
# ifndef EV_SELECT_IS_WINSOCKET
# define EV_SELECT_IS_WINSOCKET 1
# endif
# undef EV_AVOID_STDIO
#endif
/* OS X, in its infinite idiocy, actually HARDCODES
* a limit of 1024 into their select. Where people have brains,
* OS X engineers apparently have a vacuum. Or maybe they were
* ordered to have a vacuum, or they do anything for money.
* This might help. Or not.
*/
#define _DARWIN_UNLIMITED_SELECT 1
/* this block tries to deduce configuration from header-defined symbols and defaults */
/* try to deduce the maximum number of signals on this platform */
#if defined EV_NSIG
/* use what's provided */
#elif defined NSIG
# define EV_NSIG (NSIG)
#elif defined _NSIG
# define EV_NSIG (_NSIG)
#elif defined SIGMAX
# define EV_NSIG (SIGMAX+1)
#elif defined SIG_MAX
# define EV_NSIG (SIG_MAX+1)
#elif defined _SIG_MAX
# define EV_NSIG (_SIG_MAX+1)
#elif defined MAXSIG
# define EV_NSIG (MAXSIG+1)
#elif defined MAX_SIG
# define EV_NSIG (MAX_SIG+1)
#elif defined SIGARRAYSIZE
# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
#elif defined _sys_nsig
# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
#else
# define EV_NSIG (8 * sizeof (sigset_t) + 1)
#endif
#ifndef EV_USE_FLOOR
# define EV_USE_FLOOR 0
#endif
#ifndef EV_USE_CLOCK_SYSCALL
# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
# else
# define EV_USE_CLOCK_SYSCALL 0
# endif
#endif
#if !(_POSIX_TIMERS > 0)
# ifndef EV_USE_MONOTONIC
# define EV_USE_MONOTONIC 0
# endif
# ifndef EV_USE_REALTIME
# define EV_USE_REALTIME 0
# endif
#endif
#ifndef EV_USE_MONOTONIC
# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
# define EV_USE_MONOTONIC EV_FEATURE_OS
# else
# define EV_USE_MONOTONIC 0
# endif
#endif
#ifndef EV_USE_REALTIME
# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
#endif
#ifndef EV_USE_NANOSLEEP
# if _POSIX_C_SOURCE >= 199309L
# define EV_USE_NANOSLEEP EV_FEATURE_OS
# else
# define EV_USE_NANOSLEEP 0
# endif
#endif
#ifndef EV_USE_SELECT
# define EV_USE_SELECT EV_FEATURE_BACKENDS
#endif
#ifndef EV_USE_POLL
# ifdef _WIN32
# define EV_USE_POLL 0
# else
# define EV_USE_POLL EV_FEATURE_BACKENDS
# endif
#endif
#ifndef EV_USE_EPOLL
# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
# define EV_USE_EPOLL EV_FEATURE_BACKENDS
# else
# define EV_USE_EPOLL 0
# endif
#endif
#ifndef EV_USE_KQUEUE
# define EV_USE_KQUEUE 0
#endif
#ifndef EV_USE_PORT
# define EV_USE_PORT 0
#endif
#ifndef EV_USE_INOTIFY
# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
# define EV_USE_INOTIFY EV_FEATURE_OS
# else
# define EV_USE_INOTIFY 0
# endif
#endif
#ifndef EV_PID_HASHSIZE
# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
#endif
#ifndef EV_INOTIFY_HASHSIZE
# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
#endif
#ifndef EV_USE_EVENTFD
# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
# define EV_USE_EVENTFD EV_FEATURE_OS
# else
# define EV_USE_EVENTFD 0
# endif
#endif
#ifndef EV_USE_SIGNALFD
# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
# define EV_USE_SIGNALFD EV_FEATURE_OS
# else
# define EV_USE_SIGNALFD 0
# endif
#endif
#if 0 /* debugging */
# define EV_VERIFY 3
# define EV_USE_4HEAP 1
# define EV_HEAP_CACHE_AT 1
#endif
#ifndef EV_VERIFY
# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
#endif
#ifndef EV_USE_4HEAP
# define EV_USE_4HEAP EV_FEATURE_DATA
#endif
#ifndef EV_HEAP_CACHE_AT
# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
#endif
#ifdef ANDROID
/* supposedly, android doesn't typedef fd_mask */
# undef EV_USE_SELECT
# define EV_USE_SELECT 0
/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
# undef EV_USE_CLOCK_SYSCALL
# define EV_USE_CLOCK_SYSCALL 0
#endif
/* aix's poll.h seems to cause lots of trouble */
#ifdef _AIX
/* AIX has a completely broken poll.h header */
# undef EV_USE_POLL
# define EV_USE_POLL 0
#endif
/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
/* which makes programs even slower. might work on other unices, too. */
#if EV_USE_CLOCK_SYSCALL
# include <sys/syscall.h>
# ifdef SYS_clock_gettime
# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
# undef EV_USE_MONOTONIC
# define EV_USE_MONOTONIC 1
# else
# undef EV_USE_CLOCK_SYSCALL
# define EV_USE_CLOCK_SYSCALL 0
# endif
#endif
/* this block fixes any misconfiguration where we know we run into trouble otherwise */
#ifndef CLOCK_MONOTONIC
# undef EV_USE_MONOTONIC
# define EV_USE_MONOTONIC 0
#endif
#ifndef CLOCK_REALTIME
# undef EV_USE_REALTIME
# define EV_USE_REALTIME 0
#endif
#if !EV_STAT_ENABLE
# undef EV_USE_INOTIFY
# define EV_USE_INOTIFY 0
#endif
#if !EV_USE_NANOSLEEP
/* hp-ux has it in sys/time.h, which we unconditionally include above */
# if !defined _WIN32 && !defined __hpux
# include <sys/select.h>
# endif
#endif
#if EV_USE_INOTIFY
# include <sys/statfs.h>
# include <sys/inotify.h>
/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
# ifndef IN_DONT_FOLLOW
# undef EV_USE_INOTIFY
# define EV_USE_INOTIFY 0
# endif
#endif
#if EV_USE_EVENTFD
/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
# include <stdint.h>
# ifndef EFD_NONBLOCK
# define EFD_NONBLOCK O_NONBLOCK
# endif
# ifndef EFD_CLOEXEC
# ifdef O_CLOEXEC
# define EFD_CLOEXEC O_CLOEXEC
# else
# define EFD_CLOEXEC 02000000
# endif
# endif
EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
#endif
#if EV_USE_SIGNALFD
/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
# include <stdint.h>
# ifndef SFD_NONBLOCK
# define SFD_NONBLOCK O_NONBLOCK
# endif
# ifndef SFD_CLOEXEC
# ifdef O_CLOEXEC
# define SFD_CLOEXEC O_CLOEXEC
# else
# define SFD_CLOEXEC 02000000
# endif
# endif
EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
struct signalfd_siginfo
{
uint32_t ssi_signo;
char pad[128 - sizeof (uint32_t)];
};
#endif
/**/
#if EV_VERIFY >= 3
# define EV_FREQUENT_CHECK ev_verify (EV_A)
#else
# define EV_FREQUENT_CHECK do { } while (0)
#endif
/*
* This is used to work around floating point rounding problems.
* This value is good at least till the year 4000.
*/
#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
/* ECB.H BEGIN */
/*
* libecb - http://software.schmorp.de/pkg/libecb
*
* Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
* Copyright (©) 2011 Emanuele Giaquinta
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modifica-
* tion, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Alternatively, the contents of this file may be used under the terms of
* the GNU General Public License ("GPL") version 2 or any later version,
* in which case the provisions of the GPL are applicable instead of
* the above. If you wish to allow the use of your version of this file
* only under the terms of the GPL and not to allow others to use your
* version of this file under the BSD license, indicate your decision
* by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL. If you do not delete the
* provisions above, a recipient may use your version of this file under
* either the BSD or the GPL.
*/
#ifndef ECB_H
#define ECB_H
/* 16 bits major, 16 bits minor */
#define ECB_VERSION 0x00010005
#ifdef _WIN32
typedef signed char int8_t;
typedef unsigned char uint8_t;
typedef signed short int16_t;
typedef unsigned short uint16_t;
typedef signed int int32_t;
typedef unsigned int uint32_t;
#if __GNUC__
typedef signed long long int64_t;
typedef unsigned long long uint64_t;
#else /* _MSC_VER || __BORLANDC__ */
typedef signed __int64 int64_t;
typedef unsigned __int64 uint64_t;
#endif
#ifdef _WIN64
#define ECB_PTRSIZE 8
typedef uint64_t uintptr_t;
typedef int64_t intptr_t;
#else
#define ECB_PTRSIZE 4
typedef uint32_t uintptr_t;
typedef int32_t intptr_t;
#endif
#else
#include <inttypes.h>
#if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
#define ECB_PTRSIZE 8
#else
#define ECB_PTRSIZE 4
#endif
#endif
#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
/* work around x32 idiocy by defining proper macros */
#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
#if _ILP32
#define ECB_AMD64_X32 1
#else
#define ECB_AMD64 1
#endif
#endif
/* many compilers define _GNUC_ to some versions but then only implement
* what their idiot authors think are the "more important" extensions,
* causing enormous grief in return for some better fake benchmark numbers.
* or so.
* we try to detect these and simply assume they are not gcc - if they have
* an issue with that they should have done it right in the first place.
*/
#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
#define ECB_GCC_VERSION(major,minor) 0
#else
#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
#endif
#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
#if __clang__ && defined __has_builtin
#define ECB_CLANG_BUILTIN(x) __has_builtin (x)
#else
#define ECB_CLANG_BUILTIN(x) 0
#endif
#if __clang__ && defined __has_extension
#define ECB_CLANG_EXTENSION(x) __has_extension (x)
#else
#define ECB_CLANG_EXTENSION(x) 0
#endif
#define ECB_CPP (__cplusplus+0)
#define ECB_CPP11 (__cplusplus >= 201103L)
#if ECB_CPP
#define ECB_C 0
#define ECB_STDC_VERSION 0
#else
#define ECB_C 1
#define ECB_STDC_VERSION __STDC_VERSION__
#endif
#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
#if ECB_CPP
#define ECB_EXTERN_C extern "C"
#define ECB_EXTERN_C_BEG ECB_EXTERN_C {
#define ECB_EXTERN_C_END }
#else
#define ECB_EXTERN_C extern
#define ECB_EXTERN_C_BEG
#define ECB_EXTERN_C_END
#endif
/*****************************************************************************/
/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
#if ECB_NO_THREADS
#define ECB_NO_SMP 1
#endif
#if ECB_NO_SMP
#define ECB_MEMORY_FENCE do { } while (0)
#endif
/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
#if __xlC__ && ECB_CPP
#include <builtins.h>
#endif
#if 1400 <= _MSC_VER
#include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
#endif
#ifndef ECB_MEMORY_FENCE
#if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
#if __i386 || __i386__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
#elif ECB_GCC_AMD64
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
#elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
#elif defined __ARM_ARCH_2__ \
|| defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
|| defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
|| defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
|| defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
|| defined __ARM_ARCH_5TEJ__
/* should not need any, unless running old code on newer cpu - arm doesn't support that */
#elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
|| defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
|| defined __ARM_ARCH_6T2__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
#elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
|| defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
#elif __aarch64__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
#elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
#elif defined __s390__ || defined __s390x__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
#elif defined __mips__
/* GNU/Linux emulates sync on mips1 architectures, so we force its use */
/* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
#define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
#elif defined __alpha__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
#elif defined __hppa__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
#elif defined __ia64__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
#elif defined __m68k__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
#elif defined __m88k__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
#elif defined __sh__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
#endif
#endif
#endif
#ifndef ECB_MEMORY_FENCE
#if ECB_GCC_VERSION(4,7)
/* see comment below (stdatomic.h) about the C11 memory model. */
#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
#define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
#define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
#elif ECB_CLANG_EXTENSION(c_atomic)
/* see comment below (stdatomic.h) about the C11 memory model. */
#define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
#define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
#define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
#elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
#define ECB_MEMORY_FENCE __sync_synchronize ()
#elif _MSC_VER >= 1500 /* VC++ 2008 */
/* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
#define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
#elif _MSC_VER >= 1400 /* VC++ 2005 */
#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
#elif defined _WIN32
#include <WinNT.h>
#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
#elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
#include <mbarrier.h>
#define ECB_MEMORY_FENCE __machine_rw_barrier ()
#define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
#define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
#elif __xlC__
#define ECB_MEMORY_FENCE __sync ()
#endif
#endif
#ifndef ECB_MEMORY_FENCE
#if ECB_C11 && !defined __STDC_NO_ATOMICS__
/* we assume that these memory fences work on all variables/all memory accesses, */
/* not just C11 atomics and atomic accesses */
#include <stdatomic.h>
/* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
/* any fence other than seq_cst, which isn't very efficient for us. */
/* Why that is, we don't know - either the C11 memory model is quite useless */
/* for most usages, or gcc and clang have a bug */
/* I *currently* lean towards the latter, and inefficiently implement */
/* all three of ecb's fences as a seq_cst fence */
/* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
/* for all __atomic_thread_fence's except seq_cst */
#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
#endif
#endif
#ifndef ECB_MEMORY_FENCE
#if !ECB_AVOID_PTHREADS
/*
* if you get undefined symbol references to pthread_mutex_lock,
* or failure to find pthread.h, then you should implement
* the ECB_MEMORY_FENCE operations for your cpu/compiler
* OR provide pthread.h and link against the posix thread library
* of your system.
*/
#include <pthread.h>
#define ECB_NEEDS_PTHREADS 1
#define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
#define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
#endif
#endif
#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
#endif
#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
#endif
/*****************************************************************************/
#if ECB_CPP
#define ecb_inline static inline
#elif ECB_GCC_VERSION(2,5)
#define ecb_inline static __inline__
#elif ECB_C99
#define ecb_inline static inline
#else
#define ecb_inline static
#endif
#if ECB_GCC_VERSION(3,3)
#define ecb_restrict __restrict__
#elif ECB_C99
#define ecb_restrict restrict
#else
#define ecb_restrict
#endif
typedef int ecb_bool;
#define ECB_CONCAT_(a, b) a ## b
#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
#define ECB_STRINGIFY_(a) # a
#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
#define ecb_function_ ecb_inline
#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
#define ecb_attribute(attrlist) __attribute__ (attrlist)
#else
#define ecb_attribute(attrlist)
#endif
#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
#define ecb_is_constant(expr) __builtin_constant_p (expr)
#else
/* possible C11 impl for integral types
typedef struct ecb_is_constant_struct ecb_is_constant_struct;
#define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
#define ecb_is_constant(expr) 0
#endif
#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
#else
#define ecb_expect(expr,value) (expr)
#endif
#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
#else
#define ecb_prefetch(addr,rw,locality)
#endif
/* no emulation for ecb_decltype */
#if ECB_CPP11
// older implementations might have problems with decltype(x)::type, work around it
template<class T> struct ecb_decltype_t { typedef T type; };
#define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
#define ecb_decltype(x) __typeof__ (x)
#endif
#if _MSC_VER >= 1300
#define ecb_deprecated __declspec (deprecated)
#else
#define ecb_deprecated ecb_attribute ((__deprecated__))
#endif
#if _MSC_VER >= 1500
#define ecb_deprecated_message(msg) __declspec (deprecated (msg))
#elif ECB_GCC_VERSION(4,5)
#define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
#else
#define ecb_deprecated_message(msg) ecb_deprecated
#endif
#if _MSC_VER >= 1400
#define ecb_noinline __declspec (noinline)
#else
#define ecb_noinline ecb_attribute ((__noinline__))
#endif
#define ecb_unused ecb_attribute ((__unused__))
#define ecb_const ecb_attribute ((__const__))
#define ecb_pure ecb_attribute ((__pure__))
#if ECB_C11 || __IBMC_NORETURN
/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
#define ecb_noreturn _Noreturn
#elif ECB_CPP11
#define ecb_noreturn [[noreturn]]
#elif _MSC_VER >= 1200
/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
#define ecb_noreturn __declspec (noreturn)
#else
#define ecb_noreturn ecb_attribute ((__noreturn__))
#endif
#if ECB_GCC_VERSION(4,3)
#define ecb_artificial ecb_attribute ((__artificial__))
#define ecb_hot ecb_attribute ((__hot__))
#define ecb_cold ecb_attribute ((__cold__))
#else
#define ecb_artificial
#define ecb_hot
#define ecb_cold
#endif
/* put around conditional expressions if you are very sure that the */
/* expression is mostly true or mostly false. note that these return */
/* booleans, not the expression. */
#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
/* for compatibility to the rest of the world */
#define ecb_likely(expr) ecb_expect_true (expr)
#define ecb_unlikely(expr) ecb_expect_false (expr)
/* count trailing zero bits and count # of one bits */
#if ECB_GCC_VERSION(3,4) \
|| (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
&& ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
&& ECB_CLANG_BUILTIN(__builtin_popcount))
/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
#define ecb_ld32(x) (__builtin_clz (x) ^ 31)
#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
#define ecb_ctz32(x) __builtin_ctz (x)
#define ecb_ctz64(x) __builtin_ctzll (x)
#define ecb_popcount32(x) __builtin_popcount (x)
/* no popcountll */
#else
ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
ecb_function_ ecb_const int
ecb_ctz32 (uint32_t x)
{
#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
unsigned long r;
_BitScanForward (&r, x);
return (int)r;
#else
int r = 0;
x &= ~x + 1; /* this isolates the lowest bit */
#if ECB_branchless_on_i386
r += !!(x & 0xaaaaaaaa) << 0;
r += !!(x & 0xcccccccc) << 1;
r += !!(x & 0xf0f0f0f0) << 2;
r += !!(x & 0xff00ff00) << 3;
r += !!(x & 0xffff0000) << 4;
#else
if (x & 0xaaaaaaaa) r += 1;
if (x & 0xcccccccc) r += 2;
if (x & 0xf0f0f0f0) r += 4;
if (x & 0xff00ff00) r += 8;
if (x & 0xffff0000) r += 16;
#endif
return r;
#endif
}
ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
ecb_function_ ecb_const int
ecb_ctz64 (uint64_t x)
{
#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
unsigned long r;
_BitScanForward64 (&r, x);
return (int)r;
#else
int shift = x & 0xffffffff ? 0 : 32;
return ecb_ctz32 (x >> shift) + shift;
#endif
}
ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
ecb_function_ ecb_const int
ecb_popcount32 (uint32_t x)
{
x -= (x >> 1) & 0x55555555;
x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
x = ((x >> 4) + x) & 0x0f0f0f0f;
x *= 0x01010101;
return x >> 24;
}
ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
{
#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
unsigned long r;
_BitScanReverse (&r, x);
return (int)r;
#else
int r = 0;
if (x >> 16) { x >>= 16; r += 16; }
if (x >> 8) { x >>= 8; r += 8; }
if (x >> 4) { x >>= 4; r += 4; }
if (x >> 2) { x >>= 2; r += 2; }
if (x >> 1) { r += 1; }