1 | /* |
1 | /* |
2 | * libev event processing core, watcher management |
2 | * libev event processing core, watcher management |
3 | * |
3 | * |
4 | * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007-2020 Marc Alexander Lehmann <libev@schmorp.de> |
5 | * All rights reserved. |
5 | * All rights reserved. |
6 | * |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * tion, are permitted provided that the following conditions are met: |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * |
9 | * |
… | |
… | |
35 | * and other provisions required by the GPL. If you do not delete the |
35 | * and other provisions required by the GPL. If you do not delete the |
36 | * provisions above, a recipient may use your version of this file under |
36 | * provisions above, a recipient may use your version of this file under |
37 | * either the BSD or the GPL. |
37 | * either the BSD or the GPL. |
38 | */ |
38 | */ |
39 | |
39 | |
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|
40 | #pragma clang diagnostic ignored "-Wunused-value" |
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|
41 | #pragma clang diagnostic ignored "-Wcomment" |
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42 | #pragma clang diagnostic ignored "-Wextern-initializer" |
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|
43 | |
40 | /* this big block deduces configuration from config.h */ |
44 | /* this big block deduces configuration from config.h */ |
41 | #ifndef EV_STANDALONE |
45 | #ifndef EV_STANDALONE |
42 | # ifdef EV_CONFIG_H |
46 | # ifdef EV_CONFIG_H |
43 | # include EV_CONFIG_H |
47 | # include EV_CONFIG_H |
44 | # else |
48 | # else |
… | |
… | |
117 | # define EV_USE_EPOLL 0 |
121 | # define EV_USE_EPOLL 0 |
118 | # endif |
122 | # endif |
119 | |
123 | |
120 | # if HAVE_LINUX_AIO_ABI_H |
124 | # if HAVE_LINUX_AIO_ABI_H |
121 | # ifndef EV_USE_LINUXAIO |
125 | # ifndef EV_USE_LINUXAIO |
122 | # define EV_USE_LINUXAIO EV_FEATURE_BACKENDS |
126 | # define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */ |
123 | # endif |
127 | # endif |
124 | # else |
128 | # else |
125 | # undef EV_USE_LINUXAIO |
129 | # undef EV_USE_LINUXAIO |
126 | # define EV_USE_LINUXAIO 0 |
130 | # define EV_USE_LINUXAIO 0 |
127 | # endif |
131 | # endif |
… | |
… | |
178 | # else |
182 | # else |
179 | # undef EV_USE_EVENTFD |
183 | # undef EV_USE_EVENTFD |
180 | # define EV_USE_EVENTFD 0 |
184 | # define EV_USE_EVENTFD 0 |
181 | # endif |
185 | # endif |
182 | |
186 | |
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187 | # if HAVE_SYS_TIMERFD_H |
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|
188 | # ifndef EV_USE_TIMERFD |
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|
189 | # define EV_USE_TIMERFD EV_FEATURE_OS |
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|
190 | # endif |
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191 | # else |
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192 | # undef EV_USE_TIMERFD |
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193 | # define EV_USE_TIMERFD 0 |
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|
194 | # endif |
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|
195 | |
183 | #endif |
196 | #endif |
184 | |
197 | |
185 | /* OS X, in its infinite idiocy, actually HARDCODES |
198 | /* OS X, in its infinite idiocy, actually HARDCODES |
186 | * a limit of 1024 into their select. Where people have brains, |
199 | * a limit of 1024 into their select. Where people have brains, |
187 | * OS X engineers apparently have a vacuum. Or maybe they were |
200 | * OS X engineers apparently have a vacuum. Or maybe they were |
… | |
… | |
335 | # define EV_USE_PORT 0 |
348 | # define EV_USE_PORT 0 |
336 | #endif |
349 | #endif |
337 | |
350 | |
338 | #ifndef EV_USE_LINUXAIO |
351 | #ifndef EV_USE_LINUXAIO |
339 | # if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */ |
352 | # if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */ |
340 | # define EV_USE_LINUXAIO 1 |
353 | # define EV_USE_LINUXAIO 0 /* was: 1, always off by default */ |
341 | # else |
354 | # else |
342 | # define EV_USE_LINUXAIO 0 |
355 | # define EV_USE_LINUXAIO 0 |
343 | # endif |
356 | # endif |
344 | #endif |
357 | #endif |
345 | |
358 | |
… | |
… | |
378 | #ifndef EV_USE_SIGNALFD |
391 | #ifndef EV_USE_SIGNALFD |
379 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
392 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
380 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
393 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
381 | # else |
394 | # else |
382 | # define EV_USE_SIGNALFD 0 |
395 | # define EV_USE_SIGNALFD 0 |
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|
396 | # endif |
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|
397 | #endif |
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398 | |
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|
399 | #ifndef EV_USE_TIMERFD |
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|
400 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8)) |
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|
401 | # define EV_USE_TIMERFD EV_FEATURE_OS |
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|
402 | # else |
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|
403 | # define EV_USE_TIMERFD 0 |
383 | # endif |
404 | # endif |
384 | #endif |
405 | #endif |
385 | |
406 | |
386 | #if 0 /* debugging */ |
407 | #if 0 /* debugging */ |
387 | # define EV_VERIFY 3 |
408 | # define EV_VERIFY 3 |
… | |
… | |
474 | # endif |
495 | # endif |
475 | #endif |
496 | #endif |
476 | |
497 | |
477 | #if EV_USE_IOURING |
498 | #if EV_USE_IOURING |
478 | # include <sys/syscall.h> |
499 | # include <sys/syscall.h> |
479 | # if !SYS_io_uring_setup && __linux && !__alpha |
500 | # if !SYS_io_uring_register && __linux && !__alpha |
480 | # define SYS_io_uring_setup 425 |
501 | # define SYS_io_uring_setup 425 |
481 | # define SYS_io_uring_enter 426 |
502 | # define SYS_io_uring_enter 426 |
482 | # define SYS_io_uring_wregister 427 |
503 | # define SYS_io_uring_register 427 |
483 | # endif |
504 | # endif |
484 | # if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */ |
505 | # if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */ |
485 | # define EV_NEED_SYSCALL 1 |
506 | # define EV_NEED_SYSCALL 1 |
486 | # else |
507 | # else |
487 | # undef EV_USE_IOURING |
508 | # undef EV_USE_IOURING |
… | |
… | |
498 | # define EV_USE_INOTIFY 0 |
519 | # define EV_USE_INOTIFY 0 |
499 | # endif |
520 | # endif |
500 | #endif |
521 | #endif |
501 | |
522 | |
502 | #if EV_USE_EVENTFD |
523 | #if EV_USE_EVENTFD |
503 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
524 | /* our minimum requirement is glibc 2.7 which has the stub, but not the full header */ |
504 | # include <stdint.h> |
525 | # include <stdint.h> |
505 | # ifndef EFD_NONBLOCK |
526 | # ifndef EFD_NONBLOCK |
506 | # define EFD_NONBLOCK O_NONBLOCK |
527 | # define EFD_NONBLOCK O_NONBLOCK |
507 | # endif |
528 | # endif |
508 | # ifndef EFD_CLOEXEC |
529 | # ifndef EFD_CLOEXEC |
… | |
… | |
514 | # endif |
535 | # endif |
515 | EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); |
536 | EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); |
516 | #endif |
537 | #endif |
517 | |
538 | |
518 | #if EV_USE_SIGNALFD |
539 | #if EV_USE_SIGNALFD |
519 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
540 | /* our minimum requirement is glibc 2.7 which has the stub, but not the full header */ |
520 | # include <stdint.h> |
541 | # include <stdint.h> |
521 | # ifndef SFD_NONBLOCK |
542 | # ifndef SFD_NONBLOCK |
522 | # define SFD_NONBLOCK O_NONBLOCK |
543 | # define SFD_NONBLOCK O_NONBLOCK |
523 | # endif |
544 | # endif |
524 | # ifndef SFD_CLOEXEC |
545 | # ifndef SFD_CLOEXEC |
… | |
… | |
526 | # define SFD_CLOEXEC O_CLOEXEC |
547 | # define SFD_CLOEXEC O_CLOEXEC |
527 | # else |
548 | # else |
528 | # define SFD_CLOEXEC 02000000 |
549 | # define SFD_CLOEXEC 02000000 |
529 | # endif |
550 | # endif |
530 | # endif |
551 | # endif |
531 | EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); |
552 | EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags); |
532 | |
553 | |
533 | struct signalfd_siginfo |
554 | struct signalfd_siginfo |
534 | { |
555 | { |
535 | uint32_t ssi_signo; |
556 | uint32_t ssi_signo; |
536 | char pad[128 - sizeof (uint32_t)]; |
557 | char pad[128 - sizeof (uint32_t)]; |
537 | }; |
558 | }; |
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|
559 | #endif |
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|
560 | |
|
|
561 | /* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */ |
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|
562 | #if EV_USE_TIMERFD |
|
|
563 | # include <sys/timerfd.h> |
|
|
564 | /* timerfd is only used for periodics */ |
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|
565 | # if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE |
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|
566 | # undef EV_USE_TIMERFD |
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|
567 | # define EV_USE_TIMERFD 0 |
|
|
568 | # endif |
538 | #endif |
569 | #endif |
539 | |
570 | |
540 | /*****************************************************************************/ |
571 | /*****************************************************************************/ |
541 | |
572 | |
542 | #if EV_VERIFY >= 3 |
573 | #if EV_VERIFY >= 3 |
… | |
… | |
552 | #define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ |
583 | #define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ |
553 | /*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ |
584 | /*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ |
554 | |
585 | |
555 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
586 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
556 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
587 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
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|
588 | #define MAX_BLOCKTIME2 1500001.07 /* same, but when timerfd is used to detect jumps, also safe delay to not overflow */ |
557 | |
589 | |
558 | /* find a portable timestamp that is "always" in the future but fits into time_t. |
590 | /* find a portable timestamp that is "always" in the future but fits into time_t. |
559 | * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t, |
591 | * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t, |
560 | * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */ |
592 | * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */ |
561 | #define EV_TSTAMP_HUGE \ |
593 | #define EV_TSTAMP_HUGE \ |
… | |
… | |
576 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
608 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
577 | /* ECB.H BEGIN */ |
609 | /* ECB.H BEGIN */ |
578 | /* |
610 | /* |
579 | * libecb - http://software.schmorp.de/pkg/libecb |
611 | * libecb - http://software.schmorp.de/pkg/libecb |
580 | * |
612 | * |
581 | * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de> |
613 | * Copyright (©) 2009-2015,2018-2020 Marc Alexander Lehmann <libecb@schmorp.de> |
582 | * Copyright (©) 2011 Emanuele Giaquinta |
614 | * Copyright (©) 2011 Emanuele Giaquinta |
583 | * All rights reserved. |
615 | * All rights reserved. |
584 | * |
616 | * |
585 | * Redistribution and use in source and binary forms, with or without modifica- |
617 | * Redistribution and use in source and binary forms, with or without modifica- |
586 | * tion, are permitted provided that the following conditions are met: |
618 | * tion, are permitted provided that the following conditions are met: |
… | |
… | |
617 | |
649 | |
618 | #ifndef ECB_H |
650 | #ifndef ECB_H |
619 | #define ECB_H |
651 | #define ECB_H |
620 | |
652 | |
621 | /* 16 bits major, 16 bits minor */ |
653 | /* 16 bits major, 16 bits minor */ |
622 | #define ECB_VERSION 0x00010006 |
654 | #define ECB_VERSION 0x00010008 |
623 | |
655 | |
624 | #ifdef _WIN32 |
656 | #include <string.h> /* for memcpy */ |
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|
657 | |
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|
658 | #if defined (_WIN32) && !defined (__MINGW32__) |
625 | typedef signed char int8_t; |
659 | typedef signed char int8_t; |
626 | typedef unsigned char uint8_t; |
660 | typedef unsigned char uint8_t; |
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|
661 | typedef signed char int_fast8_t; |
|
|
662 | typedef unsigned char uint_fast8_t; |
627 | typedef signed short int16_t; |
663 | typedef signed short int16_t; |
628 | typedef unsigned short uint16_t; |
664 | typedef unsigned short uint16_t; |
|
|
665 | typedef signed int int_fast16_t; |
|
|
666 | typedef unsigned int uint_fast16_t; |
629 | typedef signed int int32_t; |
667 | typedef signed int int32_t; |
630 | typedef unsigned int uint32_t; |
668 | typedef unsigned int uint32_t; |
|
|
669 | typedef signed int int_fast32_t; |
|
|
670 | typedef unsigned int uint_fast32_t; |
631 | #if __GNUC__ |
671 | #if __GNUC__ |
632 | typedef signed long long int64_t; |
672 | typedef signed long long int64_t; |
633 | typedef unsigned long long uint64_t; |
673 | typedef unsigned long long uint64_t; |
634 | #else /* _MSC_VER || __BORLANDC__ */ |
674 | #else /* _MSC_VER || __BORLANDC__ */ |
635 | typedef signed __int64 int64_t; |
675 | typedef signed __int64 int64_t; |
636 | typedef unsigned __int64 uint64_t; |
676 | typedef unsigned __int64 uint64_t; |
637 | #endif |
677 | #endif |
|
|
678 | typedef int64_t int_fast64_t; |
|
|
679 | typedef uint64_t uint_fast64_t; |
638 | #ifdef _WIN64 |
680 | #ifdef _WIN64 |
639 | #define ECB_PTRSIZE 8 |
681 | #define ECB_PTRSIZE 8 |
640 | typedef uint64_t uintptr_t; |
682 | typedef uint64_t uintptr_t; |
641 | typedef int64_t intptr_t; |
683 | typedef int64_t intptr_t; |
642 | #else |
684 | #else |
… | |
… | |
653 | #endif |
695 | #endif |
654 | #endif |
696 | #endif |
655 | |
697 | |
656 | #define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__) |
698 | #define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__) |
657 | #define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64) |
699 | #define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64) |
|
|
700 | |
|
|
701 | #ifndef ECB_OPTIMIZE_SIZE |
|
|
702 | #if __OPTIMIZE_SIZE__ |
|
|
703 | #define ECB_OPTIMIZE_SIZE 1 |
|
|
704 | #else |
|
|
705 | #define ECB_OPTIMIZE_SIZE 0 |
|
|
706 | #endif |
|
|
707 | #endif |
658 | |
708 | |
659 | /* work around x32 idiocy by defining proper macros */ |
709 | /* work around x32 idiocy by defining proper macros */ |
660 | #if ECB_GCC_AMD64 || ECB_MSVC_AMD64 |
710 | #if ECB_GCC_AMD64 || ECB_MSVC_AMD64 |
661 | #if _ILP32 |
711 | #if _ILP32 |
662 | #define ECB_AMD64_X32 1 |
712 | #define ECB_AMD64_X32 1 |
… | |
… | |
1169 | ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
1219 | ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
1170 | ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
1220 | ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
1171 | ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
1221 | ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
1172 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
1222 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
1173 | |
1223 | |
|
|
1224 | #if ECB_CPP |
|
|
1225 | |
|
|
1226 | inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); } |
|
|
1227 | inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); } |
|
|
1228 | inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); } |
|
|
1229 | inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); } |
|
|
1230 | |
|
|
1231 | inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); } |
|
|
1232 | inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); } |
|
|
1233 | inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); } |
|
|
1234 | inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); } |
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|
1235 | |
|
|
1236 | inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); } |
|
|
1237 | inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); } |
|
|
1238 | inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); } |
|
|
1239 | inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); } |
|
|
1240 | |
|
|
1241 | inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); } |
|
|
1242 | inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); } |
|
|
1243 | inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); } |
|
|
1244 | inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); } |
|
|
1245 | |
|
|
1246 | inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); } |
|
|
1247 | inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); } |
|
|
1248 | inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); } |
|
|
1249 | |
|
|
1250 | inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); } |
|
|
1251 | inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); } |
|
|
1252 | inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); } |
|
|
1253 | inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); } |
|
|
1254 | |
|
|
1255 | inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); } |
|
|
1256 | inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); } |
|
|
1257 | inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); } |
|
|
1258 | inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); } |
|
|
1259 | |
|
|
1260 | #endif |
|
|
1261 | |
1174 | #if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64)) |
1262 | #if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64)) |
1175 | #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16) |
1263 | #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16) |
1176 | #define ecb_bswap16(x) __builtin_bswap16 (x) |
1264 | #define ecb_bswap16(x) __builtin_bswap16 (x) |
1177 | #else |
1265 | #else |
1178 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
1266 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
… | |
… | |
1249 | ecb_inline ecb_const ecb_bool ecb_big_endian (void); |
1337 | ecb_inline ecb_const ecb_bool ecb_big_endian (void); |
1250 | ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; } |
1338 | ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; } |
1251 | ecb_inline ecb_const ecb_bool ecb_little_endian (void); |
1339 | ecb_inline ecb_const ecb_bool ecb_little_endian (void); |
1252 | ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; } |
1340 | ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; } |
1253 | |
1341 | |
|
|
1342 | /*****************************************************************************/ |
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|
1343 | /* unaligned load/store */ |
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|
1344 | |
|
|
1345 | ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; } |
|
|
1346 | ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; } |
|
|
1347 | ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; } |
|
|
1348 | |
|
|
1349 | ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; } |
|
|
1350 | ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; } |
|
|
1351 | ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; } |
|
|
1352 | |
|
|
1353 | ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; } |
|
|
1354 | ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; } |
|
|
1355 | ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; } |
|
|
1356 | |
|
|
1357 | ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); } |
|
|
1358 | ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); } |
|
|
1359 | ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); } |
|
|
1360 | |
|
|
1361 | ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); } |
|
|
1362 | ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); } |
|
|
1363 | ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); } |
|
|
1364 | |
|
|
1365 | ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; } |
|
|
1366 | ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; } |
|
|
1367 | ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; } |
|
|
1368 | |
|
|
1369 | ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; } |
|
|
1370 | ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; } |
|
|
1371 | ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; } |
|
|
1372 | |
|
|
1373 | ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); } |
|
|
1374 | ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); } |
|
|
1375 | ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); } |
|
|
1376 | |
|
|
1377 | ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); } |
|
|
1378 | ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); } |
|
|
1379 | ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); } |
|
|
1380 | |
|
|
1381 | ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); } |
|
|
1382 | ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); } |
|
|
1383 | ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); } |
|
|
1384 | |
|
|
1385 | #if ECB_CPP |
|
|
1386 | |
|
|
1387 | inline uint8_t ecb_bswap (uint8_t v) { return v; } |
|
|
1388 | inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); } |
|
|
1389 | inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); } |
|
|
1390 | inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); } |
|
|
1391 | |
|
|
1392 | template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; } |
|
|
1393 | template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; } |
|
|
1394 | template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; } |
|
|
1395 | template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); } |
|
|
1396 | template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); } |
|
|
1397 | template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; } |
|
|
1398 | template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); } |
|
|
1399 | template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); } |
|
|
1400 | |
|
|
1401 | template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; } |
|
|
1402 | template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; } |
|
|
1403 | template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; } |
|
|
1404 | template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); } |
|
|
1405 | template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); } |
|
|
1406 | template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); } |
|
|
1407 | template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); } |
|
|
1408 | template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); } |
|
|
1409 | |
|
|
1410 | #endif |
|
|
1411 | |
|
|
1412 | /*****************************************************************************/ |
|
|
1413 | |
1254 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
1414 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
1255 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
1415 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
1256 | #else |
1416 | #else |
1257 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
1417 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
1258 | #endif |
1418 | #endif |
… | |
… | |
1281 | return N; |
1441 | return N; |
1282 | } |
1442 | } |
1283 | #else |
1443 | #else |
1284 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
1444 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
1285 | #endif |
1445 | #endif |
|
|
1446 | |
|
|
1447 | /*****************************************************************************/ |
1286 | |
1448 | |
1287 | ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x); |
1449 | ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x); |
1288 | ecb_function_ ecb_const uint32_t |
1450 | ecb_function_ ecb_const uint32_t |
1289 | ecb_binary16_to_binary32 (uint32_t x) |
1451 | ecb_binary16_to_binary32 (uint32_t x) |
1290 | { |
1452 | { |
… | |
… | |
1399 | || defined __sh__ \ |
1561 | || defined __sh__ \ |
1400 | || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \ |
1562 | || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \ |
1401 | || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ |
1563 | || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ |
1402 | || defined __aarch64__ |
1564 | || defined __aarch64__ |
1403 | #define ECB_STDFP 1 |
1565 | #define ECB_STDFP 1 |
1404 | #include <string.h> /* for memcpy */ |
|
|
1405 | #else |
1566 | #else |
1406 | #define ECB_STDFP 0 |
1567 | #define ECB_STDFP 0 |
1407 | #endif |
1568 | #endif |
1408 | |
1569 | |
1409 | #ifndef ECB_NO_LIBM |
1570 | #ifndef ECB_NO_LIBM |
… | |
… | |
1631 | * our syscalls return < 0, not == -1, on error. which is good |
1792 | * our syscalls return < 0, not == -1, on error. which is good |
1632 | * enough for linux aio. |
1793 | * enough for linux aio. |
1633 | * TODO: arm is also common nowadays, maybe even mips and x86 |
1794 | * TODO: arm is also common nowadays, maybe even mips and x86 |
1634 | * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove... |
1795 | * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove... |
1635 | */ |
1796 | */ |
1636 | #if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__ |
1797 | #if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE |
1637 | /* the costly errno access probably kills this for size optimisation */ |
1798 | /* the costly errno access probably kills this for size optimisation */ |
1638 | |
1799 | |
1639 | #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \ |
1800 | #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \ |
1640 | ({ \ |
1801 | ({ \ |
1641 | long res; \ |
1802 | long res; \ |
… | |
… | |
2235 | inline_size void |
2396 | inline_size void |
2236 | fd_reify (EV_P) |
2397 | fd_reify (EV_P) |
2237 | { |
2398 | { |
2238 | int i; |
2399 | int i; |
2239 | |
2400 | |
|
|
2401 | /* most backends do not modify the fdchanges list in backend_modfiy. |
|
|
2402 | * except io_uring, which has fixed-size buffers which might force us |
|
|
2403 | * to handle events in backend_modify, causing fdchanges to be amended, |
|
|
2404 | * which could result in an endless loop. |
|
|
2405 | * to avoid this, we do not dynamically handle fds that were added |
|
|
2406 | * during fd_reify. that means that for those backends, fdchangecnt |
|
|
2407 | * might be non-zero during poll, which must cause them to not block. |
|
|
2408 | * to not put too much of a burden on other backends, this detail |
|
|
2409 | * needs to be handled in the backend. |
|
|
2410 | */ |
|
|
2411 | int changecnt = fdchangecnt; |
|
|
2412 | |
2240 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
2413 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
2241 | for (i = 0; i < fdchangecnt; ++i) |
2414 | for (i = 0; i < changecnt; ++i) |
2242 | { |
2415 | { |
2243 | int fd = fdchanges [i]; |
2416 | int fd = fdchanges [i]; |
2244 | ANFD *anfd = anfds + fd; |
2417 | ANFD *anfd = anfds + fd; |
2245 | |
2418 | |
2246 | if (anfd->reify & EV__IOFDSET && anfd->head) |
2419 | if (anfd->reify & EV__IOFDSET && anfd->head) |
… | |
… | |
2260 | } |
2433 | } |
2261 | } |
2434 | } |
2262 | } |
2435 | } |
2263 | #endif |
2436 | #endif |
2264 | |
2437 | |
2265 | for (i = 0; i < fdchangecnt; ++i) |
2438 | for (i = 0; i < changecnt; ++i) |
2266 | { |
2439 | { |
2267 | int fd = fdchanges [i]; |
2440 | int fd = fdchanges [i]; |
2268 | ANFD *anfd = anfds + fd; |
2441 | ANFD *anfd = anfds + fd; |
2269 | ev_io *w; |
2442 | ev_io *w; |
2270 | |
2443 | |
… | |
… | |
2286 | |
2459 | |
2287 | if (o_reify & EV__IOFDSET) |
2460 | if (o_reify & EV__IOFDSET) |
2288 | backend_modify (EV_A_ fd, o_events, anfd->events); |
2461 | backend_modify (EV_A_ fd, o_events, anfd->events); |
2289 | } |
2462 | } |
2290 | |
2463 | |
|
|
2464 | /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added. |
|
|
2465 | * this is a rare case (see beginning comment in this function), so we copy them to the |
|
|
2466 | * front and hope the backend handles this case. |
|
|
2467 | */ |
|
|
2468 | if (ecb_expect_false (fdchangecnt != changecnt)) |
|
|
2469 | memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges)); |
|
|
2470 | |
2291 | fdchangecnt = 0; |
2471 | fdchangecnt -= changecnt; |
2292 | } |
2472 | } |
2293 | |
2473 | |
2294 | /* something about the given fd changed */ |
2474 | /* something about the given fd changed */ |
2295 | inline_size |
2475 | inline_size |
2296 | void |
2476 | void |
2297 | fd_change (EV_P_ int fd, int flags) |
2477 | fd_change (EV_P_ int fd, int flags) |
2298 | { |
2478 | { |
2299 | unsigned char reify = anfds [fd].reify; |
2479 | unsigned char reify = anfds [fd].reify; |
2300 | anfds [fd].reify |= flags; |
2480 | anfds [fd].reify = reify | flags; |
2301 | |
2481 | |
2302 | if (ecb_expect_true (!reify)) |
2482 | if (ecb_expect_true (!reify)) |
2303 | { |
2483 | { |
2304 | ++fdchangecnt; |
2484 | ++fdchangecnt; |
2305 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit); |
2485 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit); |
… | |
… | |
2534 | upheap (heap, i + HEAP0); |
2714 | upheap (heap, i + HEAP0); |
2535 | } |
2715 | } |
2536 | |
2716 | |
2537 | /*****************************************************************************/ |
2717 | /*****************************************************************************/ |
2538 | |
2718 | |
2539 | /* associate signal watchers to a signal signal */ |
2719 | /* associate signal watchers to a signal */ |
2540 | typedef struct |
2720 | typedef struct |
2541 | { |
2721 | { |
2542 | EV_ATOMIC_T pending; |
2722 | EV_ATOMIC_T pending; |
2543 | #if EV_MULTIPLICITY |
2723 | #if EV_MULTIPLICITY |
2544 | EV_P; |
2724 | EV_P; |
… | |
… | |
2848 | |
3028 | |
2849 | #endif |
3029 | #endif |
2850 | |
3030 | |
2851 | /*****************************************************************************/ |
3031 | /*****************************************************************************/ |
2852 | |
3032 | |
|
|
3033 | #if EV_USE_TIMERFD |
|
|
3034 | |
|
|
3035 | static void periodics_reschedule (EV_P); |
|
|
3036 | |
|
|
3037 | static void |
|
|
3038 | timerfdcb (EV_P_ ev_io *iow, int revents) |
|
|
3039 | { |
|
|
3040 | struct itimerspec its = { 0 }; |
|
|
3041 | |
|
|
3042 | its.it_value.tv_sec = ev_rt_now + (int)MAX_BLOCKTIME2; |
|
|
3043 | timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0); |
|
|
3044 | |
|
|
3045 | ev_rt_now = ev_time (); |
|
|
3046 | /* periodics_reschedule only needs ev_rt_now */ |
|
|
3047 | /* but maybe in the future we want the full treatment. */ |
|
|
3048 | /* |
|
|
3049 | now_floor = EV_TS_CONST (0.); |
|
|
3050 | time_update (EV_A_ EV_TSTAMP_HUGE); |
|
|
3051 | */ |
|
|
3052 | #if EV_PERIODIC_ENABLE |
|
|
3053 | periodics_reschedule (EV_A); |
|
|
3054 | #endif |
|
|
3055 | } |
|
|
3056 | |
|
|
3057 | ecb_noinline ecb_cold |
|
|
3058 | static void |
|
|
3059 | evtimerfd_init (EV_P) |
|
|
3060 | { |
|
|
3061 | if (!ev_is_active (&timerfd_w)) |
|
|
3062 | { |
|
|
3063 | timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC); |
|
|
3064 | |
|
|
3065 | if (timerfd >= 0) |
|
|
3066 | { |
|
|
3067 | fd_intern (timerfd); /* just to be sure */ |
|
|
3068 | |
|
|
3069 | ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ); |
|
|
3070 | ev_set_priority (&timerfd_w, EV_MINPRI); |
|
|
3071 | ev_io_start (EV_A_ &timerfd_w); |
|
|
3072 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
3073 | |
|
|
3074 | /* (re-) arm timer */ |
|
|
3075 | timerfdcb (EV_A_ 0, 0); |
|
|
3076 | } |
|
|
3077 | } |
|
|
3078 | } |
|
|
3079 | |
|
|
3080 | #endif |
|
|
3081 | |
|
|
3082 | /*****************************************************************************/ |
|
|
3083 | |
2853 | #if EV_USE_IOCP |
3084 | #if EV_USE_IOCP |
2854 | # include "ev_iocp.c" |
3085 | # include "ev_iocp.c" |
2855 | #endif |
3086 | #endif |
2856 | #if EV_USE_PORT |
3087 | #if EV_USE_PORT |
2857 | # include "ev_port.c" |
3088 | # include "ev_port.c" |
… | |
… | |
2903 | unsigned int |
3134 | unsigned int |
2904 | ev_supported_backends (void) EV_NOEXCEPT |
3135 | ev_supported_backends (void) EV_NOEXCEPT |
2905 | { |
3136 | { |
2906 | unsigned int flags = 0; |
3137 | unsigned int flags = 0; |
2907 | |
3138 | |
2908 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
3139 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
2909 | if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE; |
3140 | if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE; |
2910 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
3141 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
2911 | if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO; |
3142 | if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO; |
2912 | if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING; |
3143 | if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */ |
2913 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
3144 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
2914 | if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT; |
3145 | if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT; |
2915 | |
3146 | |
2916 | return flags; |
3147 | return flags; |
2917 | } |
3148 | } |
2918 | |
3149 | |
2919 | ecb_cold |
3150 | ecb_cold |
2920 | unsigned int |
3151 | unsigned int |
… | |
… | |
2938 | |
3169 | |
2939 | /* TODO: linuxaio is very experimental */ |
3170 | /* TODO: linuxaio is very experimental */ |
2940 | #if !EV_RECOMMEND_LINUXAIO |
3171 | #if !EV_RECOMMEND_LINUXAIO |
2941 | flags &= ~EVBACKEND_LINUXAIO; |
3172 | flags &= ~EVBACKEND_LINUXAIO; |
2942 | #endif |
3173 | #endif |
2943 | /* TODO: linuxaio is super experimental */ |
3174 | /* TODO: iouring is super experimental */ |
2944 | #if !EV_RECOMMEND_IOURING |
3175 | #if !EV_RECOMMEND_IOURING |
2945 | flags &= ~EVBACKEND_IOURING; |
3176 | flags &= ~EVBACKEND_IOURING; |
2946 | #endif |
3177 | #endif |
2947 | |
3178 | |
2948 | return flags; |
3179 | return flags; |
… | |
… | |
2950 | |
3181 | |
2951 | ecb_cold |
3182 | ecb_cold |
2952 | unsigned int |
3183 | unsigned int |
2953 | ev_embeddable_backends (void) EV_NOEXCEPT |
3184 | ev_embeddable_backends (void) EV_NOEXCEPT |
2954 | { |
3185 | { |
2955 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
3186 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING; |
2956 | |
3187 | |
2957 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
3188 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
2958 | if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ |
3189 | if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ |
2959 | flags &= ~EVBACKEND_EPOLL; |
3190 | flags &= ~EVBACKEND_EPOLL; |
2960 | |
3191 | |
2961 | /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */ |
3192 | /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */ |
2962 | |
|
|
2963 | /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not |
|
|
2964 | * because our backend_fd is the epoll fd we need as fallback. |
|
|
2965 | * if the kernel ever is fixed, this might change... |
|
|
2966 | */ |
|
|
2967 | |
3193 | |
2968 | return flags; |
3194 | return flags; |
2969 | } |
3195 | } |
2970 | |
3196 | |
2971 | unsigned int |
3197 | unsigned int |
… | |
… | |
3089 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
3315 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
3090 | #endif |
3316 | #endif |
3091 | #if EV_USE_SIGNALFD |
3317 | #if EV_USE_SIGNALFD |
3092 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
3318 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
3093 | #endif |
3319 | #endif |
|
|
3320 | #if EV_USE_TIMERFD |
|
|
3321 | timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2; |
|
|
3322 | #endif |
3094 | |
3323 | |
3095 | if (!(flags & EVBACKEND_MASK)) |
3324 | if (!(flags & EVBACKEND_MASK)) |
3096 | flags |= ev_recommended_backends (); |
3325 | flags |= ev_recommended_backends (); |
3097 | |
3326 | |
3098 | #if EV_USE_IOCP |
3327 | #if EV_USE_IOCP |
… | |
… | |
3169 | } |
3398 | } |
3170 | |
3399 | |
3171 | #if EV_USE_SIGNALFD |
3400 | #if EV_USE_SIGNALFD |
3172 | if (ev_is_active (&sigfd_w)) |
3401 | if (ev_is_active (&sigfd_w)) |
3173 | close (sigfd); |
3402 | close (sigfd); |
|
|
3403 | #endif |
|
|
3404 | |
|
|
3405 | #if EV_USE_TIMERFD |
|
|
3406 | if (ev_is_active (&timerfd_w)) |
|
|
3407 | close (timerfd); |
3174 | #endif |
3408 | #endif |
3175 | |
3409 | |
3176 | #if EV_USE_INOTIFY |
3410 | #if EV_USE_INOTIFY |
3177 | if (fs_fd >= 0) |
3411 | if (fs_fd >= 0) |
3178 | close (fs_fd); |
3412 | close (fs_fd); |
… | |
… | |
3271 | #endif |
3505 | #endif |
3272 | #if EV_USE_INOTIFY |
3506 | #if EV_USE_INOTIFY |
3273 | infy_fork (EV_A); |
3507 | infy_fork (EV_A); |
3274 | #endif |
3508 | #endif |
3275 | |
3509 | |
|
|
3510 | if (postfork != 2) |
|
|
3511 | { |
|
|
3512 | #if EV_USE_SIGNALFD |
|
|
3513 | /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */ |
|
|
3514 | #endif |
|
|
3515 | |
|
|
3516 | #if EV_USE_TIMERFD |
|
|
3517 | if (ev_is_active (&timerfd_w)) |
|
|
3518 | { |
|
|
3519 | ev_ref (EV_A); |
|
|
3520 | ev_io_stop (EV_A_ &timerfd_w); |
|
|
3521 | |
|
|
3522 | close (timerfd); |
|
|
3523 | timerfd = -2; |
|
|
3524 | |
|
|
3525 | evtimerfd_init (EV_A); |
|
|
3526 | /* reschedule periodics, in case we missed something */ |
|
|
3527 | ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM); |
|
|
3528 | } |
|
|
3529 | #endif |
|
|
3530 | |
3276 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
3531 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
3277 | if (ev_is_active (&pipe_w) && postfork != 2) |
3532 | if (ev_is_active (&pipe_w)) |
3278 | { |
3533 | { |
3279 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
3534 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
3280 | |
3535 | |
3281 | ev_ref (EV_A); |
3536 | ev_ref (EV_A); |
3282 | ev_io_stop (EV_A_ &pipe_w); |
3537 | ev_io_stop (EV_A_ &pipe_w); |
3283 | |
3538 | |
3284 | if (evpipe [0] >= 0) |
3539 | if (evpipe [0] >= 0) |
3285 | EV_WIN32_CLOSE_FD (evpipe [0]); |
3540 | EV_WIN32_CLOSE_FD (evpipe [0]); |
3286 | |
3541 | |
3287 | evpipe_init (EV_A); |
3542 | evpipe_init (EV_A); |
3288 | /* iterate over everything, in case we missed something before */ |
3543 | /* iterate over everything, in case we missed something before */ |
3289 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
3544 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
3545 | } |
|
|
3546 | #endif |
3290 | } |
3547 | } |
3291 | #endif |
|
|
3292 | |
3548 | |
3293 | postfork = 0; |
3549 | postfork = 0; |
3294 | } |
3550 | } |
3295 | |
3551 | |
3296 | #if EV_MULTIPLICITY |
3552 | #if EV_MULTIPLICITY |
… | |
… | |
3840 | |
4096 | |
3841 | if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
4097 | if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
3842 | { |
4098 | { |
3843 | waittime = EV_TS_CONST (MAX_BLOCKTIME); |
4099 | waittime = EV_TS_CONST (MAX_BLOCKTIME); |
3844 | |
4100 | |
|
|
4101 | #if EV_USE_MONOTONIC |
|
|
4102 | if (ecb_expect_true (have_monotonic)) |
|
|
4103 | { |
|
|
4104 | #if EV_USE_TIMERFD |
|
|
4105 | /* sleep a lot longer when we can reliably detect timejumps */ |
|
|
4106 | if (ecb_expect_true (timerfd != -1)) |
|
|
4107 | waittime = EV_TS_CONST (MAX_BLOCKTIME2); |
|
|
4108 | #endif |
|
|
4109 | #if !EV_PERIODIC_ENABLE |
|
|
4110 | /* without periodics but with monotonic clock there is no need */ |
|
|
4111 | /* for any time jump detection, so sleep longer */ |
|
|
4112 | waittime = EV_TS_CONST (MAX_BLOCKTIME2); |
|
|
4113 | #endif |
|
|
4114 | } |
|
|
4115 | #endif |
|
|
4116 | |
3845 | if (timercnt) |
4117 | if (timercnt) |
3846 | { |
4118 | { |
3847 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
4119 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
3848 | if (waittime > to) waittime = to; |
4120 | if (waittime > to) waittime = to; |
3849 | } |
4121 | } |
… | |
… | |
3858 | |
4130 | |
3859 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
4131 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
3860 | if (ecb_expect_false (waittime < timeout_blocktime)) |
4132 | if (ecb_expect_false (waittime < timeout_blocktime)) |
3861 | waittime = timeout_blocktime; |
4133 | waittime = timeout_blocktime; |
3862 | |
4134 | |
3863 | /* at this point, we NEED to wait, so we have to ensure */ |
4135 | /* now there are two more special cases left, either we have |
3864 | /* to pass a minimum nonzero value to the backend */ |
4136 | * already-expired timers, so we should not sleep, or we have timers |
|
|
4137 | * that expire very soon, in which case we need to wait for a minimum |
|
|
4138 | * amount of time for some event loop backends. |
|
|
4139 | */ |
3865 | if (ecb_expect_false (waittime < backend_mintime)) |
4140 | if (ecb_expect_false (waittime < backend_mintime)) |
|
|
4141 | waittime = waittime <= EV_TS_CONST (0.) |
|
|
4142 | ? EV_TS_CONST (0.) |
3866 | waittime = backend_mintime; |
4143 | : backend_mintime; |
3867 | |
4144 | |
3868 | /* extra check because io_blocktime is commonly 0 */ |
4145 | /* extra check because io_blocktime is commonly 0 */ |
3869 | if (ecb_expect_false (io_blocktime)) |
4146 | if (ecb_expect_false (io_blocktime)) |
3870 | { |
4147 | { |
3871 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
4148 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
… | |
… | |
4206 | void |
4483 | void |
4207 | ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT |
4484 | ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT |
4208 | { |
4485 | { |
4209 | if (ecb_expect_false (ev_is_active (w))) |
4486 | if (ecb_expect_false (ev_is_active (w))) |
4210 | return; |
4487 | return; |
|
|
4488 | |
|
|
4489 | #if EV_USE_TIMERFD |
|
|
4490 | if (timerfd == -2) |
|
|
4491 | evtimerfd_init (EV_A); |
|
|
4492 | #endif |
4211 | |
4493 | |
4212 | if (w->reschedule_cb) |
4494 | if (w->reschedule_cb) |
4213 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
4495 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
4214 | else if (w->interval) |
4496 | else if (w->interval) |
4215 | { |
4497 | { |
… | |
… | |
4957 | ev_run (EV_A_ EVRUN_NOWAIT); |
5239 | ev_run (EV_A_ EVRUN_NOWAIT); |
4958 | } |
5240 | } |
4959 | } |
5241 | } |
4960 | } |
5242 | } |
4961 | |
5243 | |
|
|
5244 | #if EV_FORK_ENABLE |
4962 | static void |
5245 | static void |
4963 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
5246 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
4964 | { |
5247 | { |
4965 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
5248 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
4966 | |
5249 | |
… | |
… | |
4973 | ev_run (EV_A_ EVRUN_NOWAIT); |
5256 | ev_run (EV_A_ EVRUN_NOWAIT); |
4974 | } |
5257 | } |
4975 | |
5258 | |
4976 | ev_embed_start (EV_A_ w); |
5259 | ev_embed_start (EV_A_ w); |
4977 | } |
5260 | } |
|
|
5261 | #endif |
4978 | |
5262 | |
4979 | #if 0 |
5263 | #if 0 |
4980 | static void |
5264 | static void |
4981 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
5265 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
4982 | { |
5266 | { |
… | |
… | |
5003 | |
5287 | |
5004 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
5288 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
5005 | ev_set_priority (&w->prepare, EV_MINPRI); |
5289 | ev_set_priority (&w->prepare, EV_MINPRI); |
5006 | ev_prepare_start (EV_A_ &w->prepare); |
5290 | ev_prepare_start (EV_A_ &w->prepare); |
5007 | |
5291 | |
|
|
5292 | #if EV_FORK_ENABLE |
5008 | ev_fork_init (&w->fork, embed_fork_cb); |
5293 | ev_fork_init (&w->fork, embed_fork_cb); |
5009 | ev_fork_start (EV_A_ &w->fork); |
5294 | ev_fork_start (EV_A_ &w->fork); |
|
|
5295 | #endif |
5010 | |
5296 | |
5011 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
5297 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
5012 | |
5298 | |
5013 | ev_start (EV_A_ (W)w, 1); |
5299 | ev_start (EV_A_ (W)w, 1); |
5014 | |
5300 | |
… | |
… | |
5024 | |
5310 | |
5025 | EV_FREQUENT_CHECK; |
5311 | EV_FREQUENT_CHECK; |
5026 | |
5312 | |
5027 | ev_io_stop (EV_A_ &w->io); |
5313 | ev_io_stop (EV_A_ &w->io); |
5028 | ev_prepare_stop (EV_A_ &w->prepare); |
5314 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
5315 | #if EV_FORK_ENABLE |
5029 | ev_fork_stop (EV_A_ &w->fork); |
5316 | ev_fork_stop (EV_A_ &w->fork); |
|
|
5317 | #endif |
5030 | |
5318 | |
5031 | ev_stop (EV_A_ (W)w); |
5319 | ev_stop (EV_A_ (W)w); |
5032 | |
5320 | |
5033 | EV_FREQUENT_CHECK; |
5321 | EV_FREQUENT_CHECK; |
5034 | } |
5322 | } |