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Comparing libev/ev.c (file contents):
Revision 1.497 by root, Tue Jun 25 04:52:30 2019 UTC vs.
Revision 1.535 by sf-exg, Mon May 17 15:41:10 2021 UTC

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 *
… …
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif 118# endif
119 119
120# if HAVE_LINUX_AIO_ABI_H 120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO 121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS 122# define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
123# endif 123# endif
124# else 124# else
125# undef EV_USE_LINUXAIO 125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0 126# define EV_USE_LINUXAIO 0
127# endif 127# endif
128 128
129# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
130# ifndef EV_USE_IOURING
131# define EV_USE_IOURING EV_FEATURE_BACKENDS
132# endif
133# else
134# undef EV_USE_IOURING
135# define EV_USE_IOURING 0
136# endif
137
129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
130# ifndef EV_USE_KQUEUE 139# ifndef EV_USE_KQUEUE
131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
132# endif 141# endif
133# else 142# else
… …
168# endif 177# endif
169# else 178# else
170# undef EV_USE_EVENTFD 179# undef EV_USE_EVENTFD
171# define EV_USE_EVENTFD 0 180# define EV_USE_EVENTFD 0
172# endif 181# endif
173 182
183# if HAVE_SYS_TIMERFD_H
184# ifndef EV_USE_TIMERFD
185# define EV_USE_TIMERFD EV_FEATURE_OS
186# endif
187# else
188# undef EV_USE_TIMERFD
189# define EV_USE_TIMERFD 0
190# endif
191
174#endif 192#endif
175 193
176/* OS X, in its infinite idiocy, actually HARDCODES 194/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains, 195 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were 196 * OS X engineers apparently have a vacuum. Or maybe they were
… …
326# define EV_USE_PORT 0 344# define EV_USE_PORT 0
327#endif 345#endif
328 346
329#ifndef EV_USE_LINUXAIO 347#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */ 348# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1 349# define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
332# else 350# else
333# define EV_USE_LINUXAIO 0 351# define EV_USE_LINUXAIO 0
352# endif
353#endif
354
355#ifndef EV_USE_IOURING
356# if __linux /* later checks might disable again */
357# define EV_USE_IOURING 1
358# else
359# define EV_USE_IOURING 0
334# endif 360# endif
335#endif 361#endif
336 362
337#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
338# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
… …
361#ifndef EV_USE_SIGNALFD 387#ifndef EV_USE_SIGNALFD
362# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 388# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
363# define EV_USE_SIGNALFD EV_FEATURE_OS 389# define EV_USE_SIGNALFD EV_FEATURE_OS
364# else 390# else
365# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
392# endif
393#endif
394
395#ifndef EV_USE_TIMERFD
396# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
397# define EV_USE_TIMERFD EV_FEATURE_OS
398# else
399# define EV_USE_TIMERFD 0
366# endif 400# endif
367#endif 401#endif
368 402
369#if 0 /* debugging */ 403#if 0 /* debugging */
370# define EV_VERIFY 3 404# define EV_VERIFY 3
… …
406# include <sys/syscall.h> 440# include <sys/syscall.h>
407# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
408# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
409# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
410# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
411# else 446# else
412# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
413# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
414# endif 449# endif
415#endif 450#endif
… …
427#endif 462#endif
428 463
429#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
430# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
431# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
467#endif
468
469#if __linux && EV_USE_IOURING
470# include <linux/version.h>
471# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
472# undef EV_USE_IOURING
473# define EV_USE_IOURING 0
474# endif
432#endif 475#endif
433 476
434#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
435/* hp-ux has it in sys/time.h, which we unconditionally include above */ 478/* hp-ux has it in sys/time.h, which we unconditionally include above */
436# if !defined _WIN32 && !defined __hpux 479# if !defined _WIN32 && !defined __hpux
… …
438# endif 481# endif
439#endif 482#endif
440 483
441#if EV_USE_LINUXAIO 484#if EV_USE_LINUXAIO
442# include <sys/syscall.h> 485# include <sys/syscall.h>
443# if !SYS_io_getevents || !EV_USE_EPOLL /* ev_linxaio uses ev_poll.c:ev_epoll_create */ 486# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
487# define EV_NEED_SYSCALL 1
488# else
444# undef EV_USE_LINUXAIO 489# undef EV_USE_LINUXAIO
445# define EV_USE_LINUXAIO 0 490# define EV_USE_LINUXAIO 0
491# endif
492#endif
493
494#if EV_USE_IOURING
495# include <sys/syscall.h>
496# if !SYS_io_uring_register && __linux && !__alpha
497# define SYS_io_uring_setup 425
498# define SYS_io_uring_enter 426
499# define SYS_io_uring_register 427
500# endif
501# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
502# define EV_NEED_SYSCALL 1
503# else
504# undef EV_USE_IOURING
505# define EV_USE_IOURING 0
446# endif 506# endif
447#endif 507#endif
448 508
449#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
450# include <sys/statfs.h> 510# include <sys/statfs.h>
… …
455# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
456# endif 516# endif
457#endif 517#endif
458 518
459#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
460/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 520/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
461# include <stdint.h> 521# include <stdint.h>
462# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
463# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
464# endif 524# endif
465# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
471# endif 531# endif
472EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
473#endif 533#endif
474 534
475#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
476/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 536/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
477# include <stdint.h> 537# include <stdint.h>
478# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
479# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
480# endif 540# endif
481# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
483# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
484# else 544# else
485# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
486# endif 546# endif
487# endif 547# endif
488EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); 548EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
489 549
490struct signalfd_siginfo 550struct signalfd_siginfo
491{ 551{
492 uint32_t ssi_signo; 552 uint32_t ssi_signo;
493 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
494}; 554};
495#endif 555#endif
496 556
497/**/ 557/* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */
558#if EV_USE_TIMERFD
559# include <sys/timerfd.h>
560/* timerfd is only used for periodics */
561# if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE
562# undef EV_USE_TIMERFD
563# define EV_USE_TIMERFD 0
564# endif
565#endif
566
567/*****************************************************************************/
498 568
499#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
500# define EV_FREQUENT_CHECK ev_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
501#else 571#else
502# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
… …
507 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
508 */ 578 */
509#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 579#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
510/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 580/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
511 581
512#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 582#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
513#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 583#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
584#define MAX_BLOCKTIME2 1500001.07 /* same, but when timerfd is used to detect jumps, also safe delay to not overflow */
514 585
586/* find a portable timestamp that is "always" in the future but fits into time_t.
587 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
588 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
589#define EV_TSTAMP_HUGE \
590 (sizeof (time_t) >= 8 ? 10000000000000. \
591 : 0 < (time_t)4294967295 ? 4294967295. \
592 : 2147483647.) \
593
594#ifndef EV_TS_CONST
595# define EV_TS_CONST(nv) nv
596# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
597# define EV_TS_FROM_USEC(us) us * 1e-6
515#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 598# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
516#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 599# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
600# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
601# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
602#endif
517 603
518/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 604/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
519/* ECB.H BEGIN */ 605/* ECB.H BEGIN */
520/* 606/*
521 * libecb - http://software.schmorp.de/pkg/libecb 607 * libecb - http://software.schmorp.de/pkg/libecb
522 * 608 *
523 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de> 609 * Copyright (©) 2009-2015,2018-2020 Marc Alexander Lehmann <libecb@schmorp.de>
524 * Copyright (©) 2011 Emanuele Giaquinta 610 * Copyright (©) 2011 Emanuele Giaquinta
525 * All rights reserved. 611 * All rights reserved.
526 * 612 *
527 * Redistribution and use in source and binary forms, with or without modifica- 613 * Redistribution and use in source and binary forms, with or without modifica-
528 * tion, are permitted provided that the following conditions are met: 614 * tion, are permitted provided that the following conditions are met:
… …
559 645
560#ifndef ECB_H 646#ifndef ECB_H
561#define ECB_H 647#define ECB_H
562 648
563/* 16 bits major, 16 bits minor */ 649/* 16 bits major, 16 bits minor */
564#define ECB_VERSION 0x00010006 650#define ECB_VERSION 0x00010008
565 651
566#ifdef _WIN32 652#include <string.h> /* for memcpy */
653
654#if defined (_WIN32) && !defined (__MINGW32__)
567 typedef signed char int8_t; 655 typedef signed char int8_t;
568 typedef unsigned char uint8_t; 656 typedef unsigned char uint8_t;
657 typedef signed char int_fast8_t;
658 typedef unsigned char uint_fast8_t;
569 typedef signed short int16_t; 659 typedef signed short int16_t;
570 typedef unsigned short uint16_t; 660 typedef unsigned short uint16_t;
661 typedef signed int int_fast16_t;
662 typedef unsigned int uint_fast16_t;
571 typedef signed int int32_t; 663 typedef signed int int32_t;
572 typedef unsigned int uint32_t; 664 typedef unsigned int uint32_t;
665 typedef signed int int_fast32_t;
666 typedef unsigned int uint_fast32_t;
573 #if __GNUC__ 667 #if __GNUC__
574 typedef signed long long int64_t; 668 typedef signed long long int64_t;
575 typedef unsigned long long uint64_t; 669 typedef unsigned long long uint64_t;
576 #else /* _MSC_VER || __BORLANDC__ */ 670 #else /* _MSC_VER || __BORLANDC__ */
577 typedef signed __int64 int64_t; 671 typedef signed __int64 int64_t;
578 typedef unsigned __int64 uint64_t; 672 typedef unsigned __int64 uint64_t;
579 #endif 673 #endif
674 typedef int64_t int_fast64_t;
675 typedef uint64_t uint_fast64_t;
580 #ifdef _WIN64 676 #ifdef _WIN64
581 #define ECB_PTRSIZE 8 677 #define ECB_PTRSIZE 8
582 typedef uint64_t uintptr_t; 678 typedef uint64_t uintptr_t;
583 typedef int64_t intptr_t; 679 typedef int64_t intptr_t;
584 #else 680 #else
… …
595 #endif 691 #endif
596#endif 692#endif
597 693
598#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__) 694#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
599#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64) 695#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
696
697#ifndef ECB_OPTIMIZE_SIZE
698 #if __OPTIMIZE_SIZE__
699 #define ECB_OPTIMIZE_SIZE 1
700 #else
701 #define ECB_OPTIMIZE_SIZE 0
702 #endif
703#endif
600 704
601/* work around x32 idiocy by defining proper macros */ 705/* work around x32 idiocy by defining proper macros */
602#if ECB_GCC_AMD64 || ECB_MSVC_AMD64 706#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
603 #if _ILP32 707 #if _ILP32
604 #define ECB_AMD64_X32 1 708 #define ECB_AMD64_X32 1
… …
1111ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1215ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1112ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1216ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1113ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1217ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1114ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1218ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1115 1219
1220#if ECB_CPP
1221
1222inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
1223inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
1224inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
1225inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
1226
1227inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
1228inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
1229inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
1230inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
1231
1232inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
1233inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
1234inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
1235inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
1236
1237inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
1238inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
1239inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
1240inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
1241
1242inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
1243inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
1244inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
1245
1246inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
1247inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
1248inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
1249inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
1250
1251inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
1252inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
1253inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
1254inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
1255
1256#endif
1257
1116#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64)) 1258#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1117 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16) 1259 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1118 #define ecb_bswap16(x) __builtin_bswap16 (x) 1260 #define ecb_bswap16(x) __builtin_bswap16 (x)
1119 #else 1261 #else
1120 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1262 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
… …
1191ecb_inline ecb_const ecb_bool ecb_big_endian (void); 1333ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1192ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; } 1334ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1193ecb_inline ecb_const ecb_bool ecb_little_endian (void); 1335ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1194ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; } 1336ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1195 1337
1338/*****************************************************************************/
1339/* unaligned load/store */
1340
1341ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1342ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1343ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1344
1345ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1346ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1347ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1348
1349ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1350ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1351ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1352
1353ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
1354ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
1355ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
1356
1357ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
1358ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
1359ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
1360
1361ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1362ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1363ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1364
1365ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1366ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1367ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1368
1369ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
1370ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
1371ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
1372
1373ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); }
1374ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); }
1375ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); }
1376
1377ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); }
1378ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); }
1379ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); }
1380
1381#if ECB_CPP
1382
1383inline uint8_t ecb_bswap (uint8_t v) { return v; }
1384inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
1385inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
1386inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
1387
1388template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1389template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1390template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; }
1391template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
1392template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
1393template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
1394template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
1395template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
1396
1397template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1398template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1399template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; }
1400template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
1401template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
1402template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
1403template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
1404template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
1405
1406#endif
1407
1408/*****************************************************************************/
1409
1196#if ECB_GCC_VERSION(3,0) || ECB_C99 1410#if ECB_GCC_VERSION(3,0) || ECB_C99
1197 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1411 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1198#else 1412#else
1199 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1413 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1200#endif 1414#endif
… …
1223 return N; 1437 return N;
1224 } 1438 }
1225#else 1439#else
1226 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1440 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1227#endif 1441#endif
1442
1443/*****************************************************************************/
1228 1444
1229ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x); 1445ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1230ecb_function_ ecb_const uint32_t 1446ecb_function_ ecb_const uint32_t
1231ecb_binary16_to_binary32 (uint32_t x) 1447ecb_binary16_to_binary32 (uint32_t x)
1232{ 1448{
… …
1341 || defined __sh__ \ 1557 || defined __sh__ \
1342 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \ 1558 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1343 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ 1559 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1344 || defined __aarch64__ 1560 || defined __aarch64__
1345 #define ECB_STDFP 1 1561 #define ECB_STDFP 1
1346 #include <string.h> /* for memcpy */
1347#else 1562#else
1348 #define ECB_STDFP 0 1563 #define ECB_STDFP 0
1349#endif 1564#endif
1350 1565
1351#ifndef ECB_NO_LIBM 1566#ifndef ECB_NO_LIBM
… …
1536/* ECB.H END */ 1751/* ECB.H END */
1537 1752
1538#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1753#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1539/* if your architecture doesn't need memory fences, e.g. because it is 1754/* if your architecture doesn't need memory fences, e.g. because it is
1540 * single-cpu/core, or if you use libev in a project that doesn't use libev 1755 * single-cpu/core, or if you use libev in a project that doesn't use libev
1541 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1756 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1542 * libev, in which cases the memory fences become nops. 1757 * libev, in which cases the memory fences become nops.
1543 * alternatively, you can remove this #error and link against libpthread, 1758 * alternatively, you can remove this #error and link against libpthread,
1544 * which will then provide the memory fences. 1759 * which will then provide the memory fences.
1545 */ 1760 */
1546# error "memory fences not defined for your architecture, please report" 1761# error "memory fences not defined for your architecture, please report"
… …
1550# define ECB_MEMORY_FENCE do { } while (0) 1765# define ECB_MEMORY_FENCE do { } while (0)
1551# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1766# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1552# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1767# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1553#endif 1768#endif
1554 1769
1555#define expect_false(cond) ecb_expect_false (cond)
1556#define expect_true(cond) ecb_expect_true (cond)
1557#define noinline ecb_noinline
1558
1559#define inline_size ecb_inline 1770#define inline_size ecb_inline
1560 1771
1561#if EV_FEATURE_CODE 1772#if EV_FEATURE_CODE
1562# define inline_speed ecb_inline 1773# define inline_speed ecb_inline
1563#else 1774#else
1564# define inline_speed noinline static 1775# define inline_speed ecb_noinline static
1565#endif 1776#endif
1777
1778/*****************************************************************************/
1779/* raw syscall wrappers */
1780
1781#if EV_NEED_SYSCALL
1782
1783#include <sys/syscall.h>
1784
1785/*
1786 * define some syscall wrappers for common architectures
1787 * this is mostly for nice looks during debugging, not performance.
1788 * our syscalls return < 0, not == -1, on error. which is good
1789 * enough for linux aio.
1790 * TODO: arm is also common nowadays, maybe even mips and x86
1791 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1792 */
1793#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1794 /* the costly errno access probably kills this for size optimisation */
1795
1796 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1797 ({ \
1798 long res; \
1799 register unsigned long r6 __asm__ ("r9" ); \
1800 register unsigned long r5 __asm__ ("r8" ); \
1801 register unsigned long r4 __asm__ ("r10"); \
1802 register unsigned long r3 __asm__ ("rdx"); \
1803 register unsigned long r2 __asm__ ("rsi"); \
1804 register unsigned long r1 __asm__ ("rdi"); \
1805 if (narg >= 6) r6 = (unsigned long)(arg6); \
1806 if (narg >= 5) r5 = (unsigned long)(arg5); \
1807 if (narg >= 4) r4 = (unsigned long)(arg4); \
1808 if (narg >= 3) r3 = (unsigned long)(arg3); \
1809 if (narg >= 2) r2 = (unsigned long)(arg2); \
1810 if (narg >= 1) r1 = (unsigned long)(arg1); \
1811 __asm__ __volatile__ ( \
1812 "syscall\n\t" \
1813 : "=a" (res) \
1814 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1815 : "cc", "r11", "cx", "memory"); \
1816 errno = -res; \
1817 res; \
1818 })
1819
1820#endif
1821
1822#ifdef ev_syscall
1823 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1824 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1825 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1826 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1827 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1828 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1829 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1830#else
1831 #define ev_syscall0(nr) syscall (nr)
1832 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1833 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1834 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1835 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1836 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1837 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1838#endif
1839
1840#endif
1841
1842/*****************************************************************************/
1566 1843
1567#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1844#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1568 1845
1569#if EV_MINPRI == EV_MAXPRI 1846#if EV_MINPRI == EV_MAXPRI
1570# define ABSPRI(w) (((W)w), 0) 1847# define ABSPRI(w) (((W)w), 0)
… …
1619#else 1896#else
1620 1897
1621#include <float.h> 1898#include <float.h>
1622 1899
1623/* a floor() replacement function, should be independent of ev_tstamp type */ 1900/* a floor() replacement function, should be independent of ev_tstamp type */
1624noinline 1901ecb_noinline
1625static ev_tstamp 1902static ev_tstamp
1626ev_floor (ev_tstamp v) 1903ev_floor (ev_tstamp v)
1627{ 1904{
1628 /* the choice of shift factor is not terribly important */ 1905 /* the choice of shift factor is not terribly important */
1629#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1906#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1630 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1907 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1631#else 1908#else
1632 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1909 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1633#endif 1910#endif
1634 1911
1912 /* special treatment for negative arguments */
1913 if (ecb_expect_false (v < 0.))
1914 {
1915 ev_tstamp f = -ev_floor (-v);
1916
1917 return f - (f == v ? 0 : 1);
1918 }
1919
1635 /* argument too large for an unsigned long? */ 1920 /* argument too large for an unsigned long? then reduce it */
1636 if (expect_false (v >= shift)) 1921 if (ecb_expect_false (v >= shift))
1637 { 1922 {
1638 ev_tstamp f; 1923 ev_tstamp f;
1639 1924
1640 if (v == v - 1.) 1925 if (v == v - 1.)
1641 return v; /* very large number */ 1926 return v; /* very large numbers are assumed to be integer */
1642 1927
1643 f = shift * ev_floor (v * (1. / shift)); 1928 f = shift * ev_floor (v * (1. / shift));
1644 return f + ev_floor (v - f); 1929 return f + ev_floor (v - f);
1645 } 1930 }
1646 1931
1647 /* special treatment for negative args? */
1648 if (expect_false (v < 0.))
1649 {
1650 ev_tstamp f = -ev_floor (-v);
1651
1652 return f - (f == v ? 0 : 1);
1653 }
1654
1655 /* fits into an unsigned long */ 1932 /* fits into an unsigned long */
1656 return (unsigned long)v; 1933 return (unsigned long)v;
1657} 1934}
1658 1935
1659#endif 1936#endif
… …
1662 1939
1663#ifdef __linux 1940#ifdef __linux
1664# include <sys/utsname.h> 1941# include <sys/utsname.h>
1665#endif 1942#endif
1666 1943
1667noinline ecb_cold 1944ecb_noinline ecb_cold
1668static unsigned int 1945static unsigned int
1669ev_linux_version (void) 1946ev_linux_version (void)
1670{ 1947{
1671#ifdef __linux 1948#ifdef __linux
1672 unsigned int v = 0; 1949 unsigned int v = 0;
… …
1702} 1979}
1703 1980
1704/*****************************************************************************/ 1981/*****************************************************************************/
1705 1982
1706#if EV_AVOID_STDIO 1983#if EV_AVOID_STDIO
1707noinline ecb_cold 1984ecb_noinline ecb_cold
1708static void 1985static void
1709ev_printerr (const char *msg) 1986ev_printerr (const char *msg)
1710{ 1987{
1711 write (STDERR_FILENO, msg, strlen (msg)); 1988 write (STDERR_FILENO, msg, strlen (msg));
1712} 1989}
… …
1719ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT 1996ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1720{ 1997{
1721 syserr_cb = cb; 1998 syserr_cb = cb;
1722} 1999}
1723 2000
1724noinline ecb_cold 2001ecb_noinline ecb_cold
1725static void 2002static void
1726ev_syserr (const char *msg) 2003ev_syserr (const char *msg)
1727{ 2004{
1728 if (!msg) 2005 if (!msg)
1729 msg = "(libev) system error"; 2006 msg = "(libev) system error";
… …
1801{ 2078{
1802 WL head; 2079 WL head;
1803 unsigned char events; /* the events watched for */ 2080 unsigned char events; /* the events watched for */
1804 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 2081 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1805 unsigned char emask; /* some backends store the actual kernel mask in here */ 2082 unsigned char emask; /* some backends store the actual kernel mask in here */
1806 unsigned char unused; 2083 unsigned char eflags; /* flags field for use by backends */
1807#if EV_USE_EPOLL 2084#if EV_USE_EPOLL
1808 unsigned int egen; /* generation counter to counter epoll bugs */ 2085 unsigned int egen; /* generation counter to counter epoll bugs */
1809#endif 2086#endif
1810#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2087#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1811 SOCKET handle; 2088 SOCKET handle;
… …
1865 static struct ev_loop default_loop_struct; 2142 static struct ev_loop default_loop_struct;
1866 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ 2143 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1867 2144
1868#else 2145#else
1869 2146
1870 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ 2147 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
1871 #define VAR(name,decl) static decl; 2148 #define VAR(name,decl) static decl;
1872 #include "ev_vars.h" 2149 #include "ev_vars.h"
1873 #undef VAR 2150 #undef VAR
1874 2151
1875 static int ev_default_loop_ptr; 2152 static int ev_default_loop_ptr;
1876 2153
1877#endif 2154#endif
1878 2155
1879#if EV_FEATURE_API 2156#if EV_FEATURE_API
1880# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2157# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1881# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2158# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1882# define EV_INVOKE_PENDING invoke_cb (EV_A) 2159# define EV_INVOKE_PENDING invoke_cb (EV_A)
1883#else 2160#else
1884# define EV_RELEASE_CB (void)0 2161# define EV_RELEASE_CB (void)0
1885# define EV_ACQUIRE_CB (void)0 2162# define EV_ACQUIRE_CB (void)0
1886# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2163# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1893#ifndef EV_HAVE_EV_TIME 2170#ifndef EV_HAVE_EV_TIME
1894ev_tstamp 2171ev_tstamp
1895ev_time (void) EV_NOEXCEPT 2172ev_time (void) EV_NOEXCEPT
1896{ 2173{
1897#if EV_USE_REALTIME 2174#if EV_USE_REALTIME
1898 if (expect_true (have_realtime)) 2175 if (ecb_expect_true (have_realtime))
1899 { 2176 {
1900 struct timespec ts; 2177 struct timespec ts;
1901 clock_gettime (CLOCK_REALTIME, &ts); 2178 clock_gettime (CLOCK_REALTIME, &ts);
1902 return ts.tv_sec + ts.tv_nsec * 1e-9; 2179 return EV_TS_GET (ts);
1903 } 2180 }
1904#endif 2181#endif
1905 2182
2183 {
1906 struct timeval tv; 2184 struct timeval tv;
1907 gettimeofday (&tv, 0); 2185 gettimeofday (&tv, 0);
1908 return tv.tv_sec + tv.tv_usec * 1e-6; 2186 return EV_TV_GET (tv);
2187 }
1909} 2188}
1910#endif 2189#endif
1911 2190
1912inline_size ev_tstamp 2191inline_size ev_tstamp
1913get_clock (void) 2192get_clock (void)
1914{ 2193{
1915#if EV_USE_MONOTONIC 2194#if EV_USE_MONOTONIC
1916 if (expect_true (have_monotonic)) 2195 if (ecb_expect_true (have_monotonic))
1917 { 2196 {
1918 struct timespec ts; 2197 struct timespec ts;
1919 clock_gettime (CLOCK_MONOTONIC, &ts); 2198 clock_gettime (CLOCK_MONOTONIC, &ts);
1920 return ts.tv_sec + ts.tv_nsec * 1e-9; 2199 return EV_TS_GET (ts);
1921 } 2200 }
1922#endif 2201#endif
1923 2202
1924 return ev_time (); 2203 return ev_time ();
1925} 2204}
… …
1933#endif 2212#endif
1934 2213
1935void 2214void
1936ev_sleep (ev_tstamp delay) EV_NOEXCEPT 2215ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1937{ 2216{
1938 if (delay > 0.) 2217 if (delay > EV_TS_CONST (0.))
1939 { 2218 {
1940#if EV_USE_NANOSLEEP 2219#if EV_USE_NANOSLEEP
1941 struct timespec ts; 2220 struct timespec ts;
1942 2221
1943 EV_TS_SET (ts, delay); 2222 EV_TS_SET (ts, delay);
1944 nanosleep (&ts, 0); 2223 nanosleep (&ts, 0);
1945#elif defined _WIN32 2224#elif defined _WIN32
1946 /* maybe this should round up, as ms is very low resolution */ 2225 /* maybe this should round up, as ms is very low resolution */
1947 /* compared to select (µs) or nanosleep (ns) */ 2226 /* compared to select (µs) or nanosleep (ns) */
1948 Sleep ((unsigned long)(delay * 1e3)); 2227 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1949#else 2228#else
1950 struct timeval tv; 2229 struct timeval tv;
1951 2230
1952 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2231 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1953 /* something not guaranteed by newer posix versions, but guaranteed */ 2232 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1983 } 2262 }
1984 2263
1985 return ncur; 2264 return ncur;
1986} 2265}
1987 2266
1988noinline ecb_cold 2267ecb_noinline ecb_cold
1989static void * 2268static void *
1990array_realloc (int elem, void *base, int *cur, int cnt) 2269array_realloc (int elem, void *base, int *cur, int cnt)
1991{ 2270{
1992 *cur = array_nextsize (elem, *cur, cnt); 2271 *cur = array_nextsize (elem, *cur, cnt);
1993 return ev_realloc (base, elem * *cur); 2272 return ev_realloc (base, elem * *cur);
… …
1997 2276
1998#define array_needsize_zerofill(base,offset,count) \ 2277#define array_needsize_zerofill(base,offset,count) \
1999 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count)) 2278 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
2000 2279
2001#define array_needsize(type,base,cur,cnt,init) \ 2280#define array_needsize(type,base,cur,cnt,init) \
2002 if (expect_false ((cnt) > (cur))) \ 2281 if (ecb_expect_false ((cnt) > (cur))) \
2003 { \ 2282 { \
2004 ecb_unused int ocur_ = (cur); \ 2283 ecb_unused int ocur_ = (cur); \
2005 (base) = (type *)array_realloc \ 2284 (base) = (type *)array_realloc \
2006 (sizeof (type), (base), &(cur), (cnt)); \ 2285 (sizeof (type), (base), &(cur), (cnt)); \
2007 init ((base), ocur_, ((cur) - ocur_)); \ 2286 init ((base), ocur_, ((cur) - ocur_)); \
… …
2021 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2300 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
2022 2301
2023/*****************************************************************************/ 2302/*****************************************************************************/
2024 2303
2025/* dummy callback for pending events */ 2304/* dummy callback for pending events */
2026noinline 2305ecb_noinline
2027static void 2306static void
2028pendingcb (EV_P_ ev_prepare *w, int revents) 2307pendingcb (EV_P_ ev_prepare *w, int revents)
2029{ 2308{
2030} 2309}
2031 2310
2032noinline 2311ecb_noinline
2033void 2312void
2034ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT 2313ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
2035{ 2314{
2036 W w_ = (W)w; 2315 W w_ = (W)w;
2037 int pri = ABSPRI (w_); 2316 int pri = ABSPRI (w_);
2038 2317
2039 if (expect_false (w_->pending)) 2318 if (ecb_expect_false (w_->pending))
2040 pendings [pri][w_->pending - 1].events |= revents; 2319 pendings [pri][w_->pending - 1].events |= revents;
2041 else 2320 else
2042 { 2321 {
2043 w_->pending = ++pendingcnt [pri]; 2322 w_->pending = ++pendingcnt [pri];
2044 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit); 2323 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
… …
2095inline_speed void 2374inline_speed void
2096fd_event (EV_P_ int fd, int revents) 2375fd_event (EV_P_ int fd, int revents)
2097{ 2376{
2098 ANFD *anfd = anfds + fd; 2377 ANFD *anfd = anfds + fd;
2099 2378
2100 if (expect_true (!anfd->reify)) 2379 if (ecb_expect_true (!anfd->reify))
2101 fd_event_nocheck (EV_A_ fd, revents); 2380 fd_event_nocheck (EV_A_ fd, revents);
2102} 2381}
2103 2382
2104void 2383void
2105ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT 2384ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
… …
2113inline_size void 2392inline_size void
2114fd_reify (EV_P) 2393fd_reify (EV_P)
2115{ 2394{
2116 int i; 2395 int i;
2117 2396
2397 /* most backends do not modify the fdchanges list in backend_modfiy.
2398 * except io_uring, which has fixed-size buffers which might force us
2399 * to handle events in backend_modify, causing fdchanges to be amended,
2400 * which could result in an endless loop.
2401 * to avoid this, we do not dynamically handle fds that were added
2402 * during fd_reify. that means that for those backends, fdchangecnt
2403 * might be non-zero during poll, which must cause them to not block.
2404 * to not put too much of a burden on other backends, this detail
2405 * needs to be handled in the backend.
2406 */
2407 int changecnt = fdchangecnt;
2408
2118#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2409#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2119 for (i = 0; i < fdchangecnt; ++i) 2410 for (i = 0; i < changecnt; ++i)
2120 { 2411 {
2121 int fd = fdchanges [i]; 2412 int fd = fdchanges [i];
2122 ANFD *anfd = anfds + fd; 2413 ANFD *anfd = anfds + fd;
2123 2414
2124 if (anfd->reify & EV__IOFDSET && anfd->head) 2415 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
2138 } 2429 }
2139 } 2430 }
2140 } 2431 }
2141#endif 2432#endif
2142 2433
2143 for (i = 0; i < fdchangecnt; ++i) 2434 for (i = 0; i < changecnt; ++i)
2144 { 2435 {
2145 int fd = fdchanges [i]; 2436 int fd = fdchanges [i];
2146 ANFD *anfd = anfds + fd; 2437 ANFD *anfd = anfds + fd;
2147 ev_io *w; 2438 ev_io *w;
2148 2439
2149 unsigned char o_events = anfd->events; 2440 unsigned char o_events = anfd->events;
2150 unsigned char o_reify = anfd->reify; 2441 unsigned char o_reify = anfd->reify;
2151 2442
2152 anfd->reify = 0; 2443 anfd->reify = 0;
2153 2444
2154 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2445 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
2155 { 2446 {
2156 anfd->events = 0; 2447 anfd->events = 0;
2157 2448
2158 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2449 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2159 anfd->events |= (unsigned char)w->events; 2450 anfd->events |= (unsigned char)w->events;
… …
2164 2455
2165 if (o_reify & EV__IOFDSET) 2456 if (o_reify & EV__IOFDSET)
2166 backend_modify (EV_A_ fd, o_events, anfd->events); 2457 backend_modify (EV_A_ fd, o_events, anfd->events);
2167 } 2458 }
2168 2459
2460 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2461 * this is a rare case (see beginning comment in this function), so we copy them to the
2462 * front and hope the backend handles this case.
2463 */
2464 if (ecb_expect_false (fdchangecnt != changecnt))
2465 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2466
2169 fdchangecnt = 0; 2467 fdchangecnt -= changecnt;
2170} 2468}
2171 2469
2172/* something about the given fd changed */ 2470/* something about the given fd changed */
2173inline_size 2471inline_size
2174void 2472void
2175fd_change (EV_P_ int fd, int flags) 2473fd_change (EV_P_ int fd, int flags)
2176{ 2474{
2177 unsigned char reify = anfds [fd].reify; 2475 unsigned char reify = anfds [fd].reify;
2178 anfds [fd].reify |= flags; 2476 anfds [fd].reify = reify | flags;
2179 2477
2180 if (expect_true (!reify)) 2478 if (ecb_expect_true (!reify))
2181 { 2479 {
2182 ++fdchangecnt; 2480 ++fdchangecnt;
2183 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit); 2481 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
2184 fdchanges [fdchangecnt - 1] = fd; 2482 fdchanges [fdchangecnt - 1] = fd;
2185 } 2483 }
… …
2208 return fcntl (fd, F_GETFD) != -1; 2506 return fcntl (fd, F_GETFD) != -1;
2209#endif 2507#endif
2210} 2508}
2211 2509
2212/* called on EBADF to verify fds */ 2510/* called on EBADF to verify fds */
2213noinline ecb_cold 2511ecb_noinline ecb_cold
2214static void 2512static void
2215fd_ebadf (EV_P) 2513fd_ebadf (EV_P)
2216{ 2514{
2217 int fd; 2515 int fd;
2218 2516
… …
2221 if (!fd_valid (fd) && errno == EBADF) 2519 if (!fd_valid (fd) && errno == EBADF)
2222 fd_kill (EV_A_ fd); 2520 fd_kill (EV_A_ fd);
2223} 2521}
2224 2522
2225/* called on ENOMEM in select/poll to kill some fds and retry */ 2523/* called on ENOMEM in select/poll to kill some fds and retry */
2226noinline ecb_cold 2524ecb_noinline ecb_cold
2227static void 2525static void
2228fd_enomem (EV_P) 2526fd_enomem (EV_P)
2229{ 2527{
2230 int fd; 2528 int fd;
2231 2529
… …
2236 break; 2534 break;
2237 } 2535 }
2238} 2536}
2239 2537
2240/* usually called after fork if backend needs to re-arm all fds from scratch */ 2538/* usually called after fork if backend needs to re-arm all fds from scratch */
2241noinline 2539ecb_noinline
2242static void 2540static void
2243fd_rearm_all (EV_P) 2541fd_rearm_all (EV_P)
2244{ 2542{
2245 int fd; 2543 int fd;
2246 2544
… …
2300 ev_tstamp minat; 2598 ev_tstamp minat;
2301 ANHE *minpos; 2599 ANHE *minpos;
2302 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2600 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
2303 2601
2304 /* find minimum child */ 2602 /* find minimum child */
2305 if (expect_true (pos + DHEAP - 1 < E)) 2603 if (ecb_expect_true (pos + DHEAP - 1 < E))
2306 { 2604 {
2307 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2605 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2308 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2606 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
2309 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2607 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
2310 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2608 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
2311 } 2609 }
2312 else if (pos < E) 2610 else if (pos < E)
2313 { 2611 {
2314 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2612 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2315 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2613 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
2316 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2614 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
2317 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2615 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
2318 } 2616 }
2319 else 2617 else
2320 break; 2618 break;
2321 2619
2322 if (ANHE_at (he) <= minat) 2620 if (ANHE_at (he) <= minat)
… …
2330 2628
2331 heap [k] = he; 2629 heap [k] = he;
2332 ev_active (ANHE_w (he)) = k; 2630 ev_active (ANHE_w (he)) = k;
2333} 2631}
2334 2632
2335#else /* 4HEAP */ 2633#else /* not 4HEAP */
2336 2634
2337#define HEAP0 1 2635#define HEAP0 1
2338#define HPARENT(k) ((k) >> 1) 2636#define HPARENT(k) ((k) >> 1)
2339#define UPHEAP_DONE(p,k) (!(p)) 2637#define UPHEAP_DONE(p,k) (!(p))
2340 2638
… …
2412 upheap (heap, i + HEAP0); 2710 upheap (heap, i + HEAP0);
2413} 2711}
2414 2712
2415/*****************************************************************************/ 2713/*****************************************************************************/
2416 2714
2417/* associate signal watchers to a signal signal */ 2715/* associate signal watchers to a signal */
2418typedef struct 2716typedef struct
2419{ 2717{
2420 EV_ATOMIC_T pending; 2718 EV_ATOMIC_T pending;
2421#if EV_MULTIPLICITY 2719#if EV_MULTIPLICITY
2422 EV_P; 2720 EV_P;
… …
2428 2726
2429/*****************************************************************************/ 2727/*****************************************************************************/
2430 2728
2431#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2729#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2432 2730
2433noinline ecb_cold 2731ecb_noinline ecb_cold
2434static void 2732static void
2435evpipe_init (EV_P) 2733evpipe_init (EV_P)
2436{ 2734{
2437 if (!ev_is_active (&pipe_w)) 2735 if (!ev_is_active (&pipe_w))
2438 { 2736 {
… …
2479inline_speed void 2777inline_speed void
2480evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2778evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2481{ 2779{
2482 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ 2780 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2483 2781
2484 if (expect_true (*flag)) 2782 if (ecb_expect_true (*flag))
2485 return; 2783 return;
2486 2784
2487 *flag = 1; 2785 *flag = 1;
2488 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ 2786 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2489 2787
… …
2566 sig_pending = 0; 2864 sig_pending = 0;
2567 2865
2568 ECB_MEMORY_FENCE; 2866 ECB_MEMORY_FENCE;
2569 2867
2570 for (i = EV_NSIG - 1; i--; ) 2868 for (i = EV_NSIG - 1; i--; )
2571 if (expect_false (signals [i].pending)) 2869 if (ecb_expect_false (signals [i].pending))
2572 ev_feed_signal_event (EV_A_ i + 1); 2870 ev_feed_signal_event (EV_A_ i + 1);
2573 } 2871 }
2574#endif 2872#endif
2575 2873
2576#if EV_ASYNC_ENABLE 2874#if EV_ASYNC_ENABLE
… …
2617#endif 2915#endif
2618 2916
2619 ev_feed_signal (signum); 2917 ev_feed_signal (signum);
2620} 2918}
2621 2919
2622noinline 2920ecb_noinline
2623void 2921void
2624ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT 2922ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2625{ 2923{
2626 WL w; 2924 WL w;
2627 2925
2628 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2926 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2629 return; 2927 return;
2630 2928
2631 --signum; 2929 --signum;
2632 2930
2633#if EV_MULTIPLICITY 2931#if EV_MULTIPLICITY
2634 /* it is permissible to try to feed a signal to the wrong loop */ 2932 /* it is permissible to try to feed a signal to the wrong loop */
2635 /* or, likely more useful, feeding a signal nobody is waiting for */ 2933 /* or, likely more useful, feeding a signal nobody is waiting for */
2636 2934
2637 if (expect_false (signals [signum].loop != EV_A)) 2935 if (ecb_expect_false (signals [signum].loop != EV_A))
2638 return; 2936 return;
2639#endif 2937#endif
2640 2938
2641 signals [signum].pending = 0; 2939 signals [signum].pending = 0;
2642 ECB_MEMORY_FENCE_RELEASE; 2940 ECB_MEMORY_FENCE_RELEASE;
… …
2726 3024
2727#endif 3025#endif
2728 3026
2729/*****************************************************************************/ 3027/*****************************************************************************/
2730 3028
3029#if EV_USE_TIMERFD
3030
3031static void periodics_reschedule (EV_P);
3032
3033static void
3034timerfdcb (EV_P_ ev_io *iow, int revents)
3035{
3036 struct itimerspec its = { 0 };
3037
3038 its.it_value.tv_sec = ev_rt_now + (int)MAX_BLOCKTIME2;
3039 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
3040
3041 ev_rt_now = ev_time ();
3042 /* periodics_reschedule only needs ev_rt_now */
3043 /* but maybe in the future we want the full treatment. */
3044 /*
3045 now_floor = EV_TS_CONST (0.);
3046 time_update (EV_A_ EV_TSTAMP_HUGE);
3047 */
3048#if EV_PERIODIC_ENABLE
3049 periodics_reschedule (EV_A);
3050#endif
3051}
3052
3053ecb_noinline ecb_cold
3054static void
3055evtimerfd_init (EV_P)
3056{
3057 if (!ev_is_active (&timerfd_w))
3058 {
3059 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
3060
3061 if (timerfd >= 0)
3062 {
3063 fd_intern (timerfd); /* just to be sure */
3064
3065 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
3066 ev_set_priority (&timerfd_w, EV_MINPRI);
3067 ev_io_start (EV_A_ &timerfd_w);
3068 ev_unref (EV_A); /* watcher should not keep loop alive */
3069
3070 /* (re-) arm timer */
3071 timerfdcb (EV_A_ 0, 0);
3072 }
3073 }
3074}
3075
3076#endif
3077
3078/*****************************************************************************/
3079
2731#if EV_USE_IOCP 3080#if EV_USE_IOCP
2732# include "ev_iocp.c" 3081# include "ev_iocp.c"
2733#endif 3082#endif
2734#if EV_USE_PORT 3083#if EV_USE_PORT
2735# include "ev_port.c" 3084# include "ev_port.c"
… …
2740#if EV_USE_EPOLL 3089#if EV_USE_EPOLL
2741# include "ev_epoll.c" 3090# include "ev_epoll.c"
2742#endif 3091#endif
2743#if EV_USE_LINUXAIO 3092#if EV_USE_LINUXAIO
2744# include "ev_linuxaio.c" 3093# include "ev_linuxaio.c"
3094#endif
3095#if EV_USE_IOURING
3096# include "ev_iouring.c"
2745#endif 3097#endif
2746#if EV_USE_POLL 3098#if EV_USE_POLL
2747# include "ev_poll.c" 3099# include "ev_poll.c"
2748#endif 3100#endif
2749#if EV_USE_SELECT 3101#if EV_USE_SELECT
… …
2778unsigned int 3130unsigned int
2779ev_supported_backends (void) EV_NOEXCEPT 3131ev_supported_backends (void) EV_NOEXCEPT
2780{ 3132{
2781 unsigned int flags = 0; 3133 unsigned int flags = 0;
2782 3134
2783 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3135 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2784 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE; 3136 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2785 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3137 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2786 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO; 3138 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2787 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3139 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2788 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT; 3140 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2789 3141 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3142
2790 return flags; 3143 return flags;
2791} 3144}
2792 3145
2793ecb_cold 3146ecb_cold
2794unsigned int 3147unsigned int
… …
2812 3165
2813 /* TODO: linuxaio is very experimental */ 3166 /* TODO: linuxaio is very experimental */
2814#if !EV_RECOMMEND_LINUXAIO 3167#if !EV_RECOMMEND_LINUXAIO
2815 flags &= ~EVBACKEND_LINUXAIO; 3168 flags &= ~EVBACKEND_LINUXAIO;
2816#endif 3169#endif
3170 /* TODO: iouring is super experimental */
3171#if !EV_RECOMMEND_IOURING
3172 flags &= ~EVBACKEND_IOURING;
3173#endif
2817 3174
2818 return flags; 3175 return flags;
2819} 3176}
2820 3177
2821ecb_cold 3178ecb_cold
2822unsigned int 3179unsigned int
2823ev_embeddable_backends (void) EV_NOEXCEPT 3180ev_embeddable_backends (void) EV_NOEXCEPT
2824{ 3181{
2825 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3182 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
2826 3183
2827 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3184 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2828 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 3185 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2829 flags &= ~EVBACKEND_EPOLL; 3186 flags &= ~EVBACKEND_EPOLL;
2830 3187
3188 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3189
2831 return flags; 3190 return flags;
2832} 3191}
2833 3192
2834unsigned int 3193unsigned int
2835ev_backend (EV_P) EV_NOEXCEPT 3194ev_backend (EV_P) EV_NOEXCEPT
… …
2887 acquire_cb = acquire; 3246 acquire_cb = acquire;
2888} 3247}
2889#endif 3248#endif
2890 3249
2891/* initialise a loop structure, must be zero-initialised */ 3250/* initialise a loop structure, must be zero-initialised */
2892noinline ecb_cold 3251ecb_noinline ecb_cold
2893static void 3252static void
2894loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT 3253loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2895{ 3254{
2896 if (!backend) 3255 if (!backend)
2897 { 3256 {
… …
2952 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3311 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2953#endif 3312#endif
2954#if EV_USE_SIGNALFD 3313#if EV_USE_SIGNALFD
2955 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3314 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2956#endif 3315#endif
3316#if EV_USE_TIMERFD
3317 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3318#endif
2957 3319
2958 if (!(flags & EVBACKEND_MASK)) 3320 if (!(flags & EVBACKEND_MASK))
2959 flags |= ev_recommended_backends (); 3321 flags |= ev_recommended_backends ();
2960 3322
2961#if EV_USE_IOCP 3323#if EV_USE_IOCP
… …
2964#if EV_USE_PORT 3326#if EV_USE_PORT
2965 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3327 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2966#endif 3328#endif
2967#if EV_USE_KQUEUE 3329#if EV_USE_KQUEUE
2968 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags); 3330 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3331#endif
3332#if EV_USE_IOURING
3333 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
2969#endif 3334#endif
2970#if EV_USE_LINUXAIO 3335#if EV_USE_LINUXAIO
2971 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags); 3336 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2972#endif 3337#endif
2973#if EV_USE_EPOLL 3338#if EV_USE_EPOLL
… …
3002 return; 3367 return;
3003#endif 3368#endif
3004 3369
3005#if EV_CLEANUP_ENABLE 3370#if EV_CLEANUP_ENABLE
3006 /* queue cleanup watchers (and execute them) */ 3371 /* queue cleanup watchers (and execute them) */
3007 if (expect_false (cleanupcnt)) 3372 if (ecb_expect_false (cleanupcnt))
3008 { 3373 {
3009 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3374 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3010 EV_INVOKE_PENDING; 3375 EV_INVOKE_PENDING;
3011 } 3376 }
3012#endif 3377#endif
… …
3031#if EV_USE_SIGNALFD 3396#if EV_USE_SIGNALFD
3032 if (ev_is_active (&sigfd_w)) 3397 if (ev_is_active (&sigfd_w))
3033 close (sigfd); 3398 close (sigfd);
3034#endif 3399#endif
3035 3400
3401#if EV_USE_TIMERFD
3402 if (ev_is_active (&timerfd_w))
3403 close (timerfd);
3404#endif
3405
3036#if EV_USE_INOTIFY 3406#if EV_USE_INOTIFY
3037 if (fs_fd >= 0) 3407 if (fs_fd >= 0)
3038 close (fs_fd); 3408 close (fs_fd);
3039#endif 3409#endif
3040 3410
… …
3047#if EV_USE_PORT 3417#if EV_USE_PORT
3048 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3418 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
3049#endif 3419#endif
3050#if EV_USE_KQUEUE 3420#if EV_USE_KQUEUE
3051 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A); 3421 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3422#endif
3423#if EV_USE_IOURING
3424 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3052#endif 3425#endif
3053#if EV_USE_LINUXAIO 3426#if EV_USE_LINUXAIO
3054 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A); 3427 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
3055#endif 3428#endif
3056#if EV_USE_EPOLL 3429#if EV_USE_EPOLL
… …
3115 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3488 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
3116#endif 3489#endif
3117#if EV_USE_KQUEUE 3490#if EV_USE_KQUEUE
3118 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A); 3491 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3119#endif 3492#endif
3493#if EV_USE_IOURING
3494 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3495#endif
3120#if EV_USE_LINUXAIO 3496#if EV_USE_LINUXAIO
3121 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A); 3497 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
3122#endif 3498#endif
3123#if EV_USE_EPOLL 3499#if EV_USE_EPOLL
3124 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3500 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
3125#endif 3501#endif
3126#if EV_USE_INOTIFY 3502#if EV_USE_INOTIFY
3127 infy_fork (EV_A); 3503 infy_fork (EV_A);
3128#endif 3504#endif
3129 3505
3506 if (postfork != 2)
3507 {
3508 #if EV_USE_SIGNALFD
3509 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3510 #endif
3511
3512 #if EV_USE_TIMERFD
3513 if (ev_is_active (&timerfd_w))
3514 {
3515 ev_ref (EV_A);
3516 ev_io_stop (EV_A_ &timerfd_w);
3517
3518 close (timerfd);
3519 timerfd = -2;
3520
3521 evtimerfd_init (EV_A);
3522 /* reschedule periodics, in case we missed something */
3523 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3524 }
3525 #endif
3526
3130#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3527 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
3131 if (ev_is_active (&pipe_w) && postfork != 2) 3528 if (ev_is_active (&pipe_w))
3132 { 3529 {
3133 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3530 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
3134 3531
3135 ev_ref (EV_A); 3532 ev_ref (EV_A);
3136 ev_io_stop (EV_A_ &pipe_w); 3533 ev_io_stop (EV_A_ &pipe_w);
3137 3534
3138 if (evpipe [0] >= 0) 3535 if (evpipe [0] >= 0)
3139 EV_WIN32_CLOSE_FD (evpipe [0]); 3536 EV_WIN32_CLOSE_FD (evpipe [0]);
3140 3537
3141 evpipe_init (EV_A); 3538 evpipe_init (EV_A);
3142 /* iterate over everything, in case we missed something before */ 3539 /* iterate over everything, in case we missed something before */
3143 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3540 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3541 }
3542 #endif
3144 } 3543 }
3145#endif
3146 3544
3147 postfork = 0; 3545 postfork = 0;
3148} 3546}
3149 3547
3150#if EV_MULTIPLICITY 3548#if EV_MULTIPLICITY
… …
3166} 3564}
3167 3565
3168#endif /* multiplicity */ 3566#endif /* multiplicity */
3169 3567
3170#if EV_VERIFY 3568#if EV_VERIFY
3171noinline ecb_cold 3569ecb_noinline ecb_cold
3172static void 3570static void
3173verify_watcher (EV_P_ W w) 3571verify_watcher (EV_P_ W w)
3174{ 3572{
3175 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3573 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
3176 3574
3177 if (w->pending) 3575 if (w->pending)
3178 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3576 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
3179} 3577}
3180 3578
3181noinline ecb_cold 3579ecb_noinline ecb_cold
3182static void 3580static void
3183verify_heap (EV_P_ ANHE *heap, int N) 3581verify_heap (EV_P_ ANHE *heap, int N)
3184{ 3582{
3185 int i; 3583 int i;
3186 3584
… …
3192 3590
3193 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3591 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
3194 } 3592 }
3195} 3593}
3196 3594
3197noinline ecb_cold 3595ecb_noinline ecb_cold
3198static void 3596static void
3199array_verify (EV_P_ W *ws, int cnt) 3597array_verify (EV_P_ W *ws, int cnt)
3200{ 3598{
3201 while (cnt--) 3599 while (cnt--)
3202 { 3600 {
… …
3351 count += pendingcnt [pri]; 3749 count += pendingcnt [pri];
3352 3750
3353 return count; 3751 return count;
3354} 3752}
3355 3753
3356noinline 3754ecb_noinline
3357void 3755void
3358ev_invoke_pending (EV_P) 3756ev_invoke_pending (EV_P)
3359{ 3757{
3360 pendingpri = NUMPRI; 3758 pendingpri = NUMPRI;
3361 3759
… …
3380/* make idle watchers pending. this handles the "call-idle */ 3778/* make idle watchers pending. this handles the "call-idle */
3381/* only when higher priorities are idle" logic */ 3779/* only when higher priorities are idle" logic */
3382inline_size void 3780inline_size void
3383idle_reify (EV_P) 3781idle_reify (EV_P)
3384{ 3782{
3385 if (expect_false (idleall)) 3783 if (ecb_expect_false (idleall))
3386 { 3784 {
3387 int pri; 3785 int pri;
3388 3786
3389 for (pri = NUMPRI; pri--; ) 3787 for (pri = NUMPRI; pri--; )
3390 { 3788 {
… …
3420 { 3818 {
3421 ev_at (w) += w->repeat; 3819 ev_at (w) += w->repeat;
3422 if (ev_at (w) < mn_now) 3820 if (ev_at (w) < mn_now)
3423 ev_at (w) = mn_now; 3821 ev_at (w) = mn_now;
3424 3822
3425 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3823 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
3426 3824
3427 ANHE_at_cache (timers [HEAP0]); 3825 ANHE_at_cache (timers [HEAP0]);
3428 downheap (timers, timercnt, HEAP0); 3826 downheap (timers, timercnt, HEAP0);
3429 } 3827 }
3430 else 3828 else
… …
3439 } 3837 }
3440} 3838}
3441 3839
3442#if EV_PERIODIC_ENABLE 3840#if EV_PERIODIC_ENABLE
3443 3841
3444noinline 3842ecb_noinline
3445static void 3843static void
3446periodic_recalc (EV_P_ ev_periodic *w) 3844periodic_recalc (EV_P_ ev_periodic *w)
3447{ 3845{
3448 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3846 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3449 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3847 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
… …
3452 while (at <= ev_rt_now) 3850 while (at <= ev_rt_now)
3453 { 3851 {
3454 ev_tstamp nat = at + w->interval; 3852 ev_tstamp nat = at + w->interval;
3455 3853
3456 /* when resolution fails us, we use ev_rt_now */ 3854 /* when resolution fails us, we use ev_rt_now */
3457 if (expect_false (nat == at)) 3855 if (ecb_expect_false (nat == at))
3458 { 3856 {
3459 at = ev_rt_now; 3857 at = ev_rt_now;
3460 break; 3858 break;
3461 } 3859 }
3462 3860
… …
3508 } 3906 }
3509} 3907}
3510 3908
3511/* simply recalculate all periodics */ 3909/* simply recalculate all periodics */
3512/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3910/* TODO: maybe ensure that at least one event happens when jumping forward? */
3513noinline ecb_cold 3911ecb_noinline ecb_cold
3514static void 3912static void
3515periodics_reschedule (EV_P) 3913periodics_reschedule (EV_P)
3516{ 3914{
3517 int i; 3915 int i;
3518 3916
… …
3532 reheap (periodics, periodiccnt); 3930 reheap (periodics, periodiccnt);
3533} 3931}
3534#endif 3932#endif
3535 3933
3536/* adjust all timers by a given offset */ 3934/* adjust all timers by a given offset */
3537noinline ecb_cold 3935ecb_noinline ecb_cold
3538static void 3936static void
3539timers_reschedule (EV_P_ ev_tstamp adjust) 3937timers_reschedule (EV_P_ ev_tstamp adjust)
3540{ 3938{
3541 int i; 3939 int i;
3542 3940
… …
3552/* also detect if there was a timejump, and act accordingly */ 3950/* also detect if there was a timejump, and act accordingly */
3553inline_speed void 3951inline_speed void
3554time_update (EV_P_ ev_tstamp max_block) 3952time_update (EV_P_ ev_tstamp max_block)
3555{ 3953{
3556#if EV_USE_MONOTONIC 3954#if EV_USE_MONOTONIC
3557 if (expect_true (have_monotonic)) 3955 if (ecb_expect_true (have_monotonic))
3558 { 3956 {
3559 int i; 3957 int i;
3560 ev_tstamp odiff = rtmn_diff; 3958 ev_tstamp odiff = rtmn_diff;
3561 3959
3562 mn_now = get_clock (); 3960 mn_now = get_clock ();
3563 3961
3564 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3962 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
3565 /* interpolate in the meantime */ 3963 /* interpolate in the meantime */
3566 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3964 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
3567 { 3965 {
3568 ev_rt_now = rtmn_diff + mn_now; 3966 ev_rt_now = rtmn_diff + mn_now;
3569 return; 3967 return;
3570 } 3968 }
3571 3969
… …
3585 ev_tstamp diff; 3983 ev_tstamp diff;
3586 rtmn_diff = ev_rt_now - mn_now; 3984 rtmn_diff = ev_rt_now - mn_now;
3587 3985
3588 diff = odiff - rtmn_diff; 3986 diff = odiff - rtmn_diff;
3589 3987
3590 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3988 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
3591 return; /* all is well */ 3989 return; /* all is well */
3592 3990
3593 ev_rt_now = ev_time (); 3991 ev_rt_now = ev_time ();
3594 mn_now = get_clock (); 3992 mn_now = get_clock ();
3595 now_floor = mn_now; 3993 now_floor = mn_now;
… …
3604 else 4002 else
3605#endif 4003#endif
3606 { 4004 {
3607 ev_rt_now = ev_time (); 4005 ev_rt_now = ev_time ();
3608 4006
3609 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 4007 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
3610 { 4008 {
3611 /* adjust timers. this is easy, as the offset is the same for all of them */ 4009 /* adjust timers. this is easy, as the offset is the same for all of them */
3612 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4010 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3613#if EV_PERIODIC_ENABLE 4011#if EV_PERIODIC_ENABLE
3614 periodics_reschedule (EV_A); 4012 periodics_reschedule (EV_A);
… …
3637#if EV_VERIFY >= 2 4035#if EV_VERIFY >= 2
3638 ev_verify (EV_A); 4036 ev_verify (EV_A);
3639#endif 4037#endif
3640 4038
3641#ifndef _WIN32 4039#ifndef _WIN32
3642 if (expect_false (curpid)) /* penalise the forking check even more */ 4040 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3643 if (expect_false (getpid () != curpid)) 4041 if (ecb_expect_false (getpid () != curpid))
3644 { 4042 {
3645 curpid = getpid (); 4043 curpid = getpid ();
3646 postfork = 1; 4044 postfork = 1;
3647 } 4045 }
3648#endif 4046#endif
3649 4047
3650#if EV_FORK_ENABLE 4048#if EV_FORK_ENABLE
3651 /* we might have forked, so queue fork handlers */ 4049 /* we might have forked, so queue fork handlers */
3652 if (expect_false (postfork)) 4050 if (ecb_expect_false (postfork))
3653 if (forkcnt) 4051 if (forkcnt)
3654 { 4052 {
3655 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4053 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3656 EV_INVOKE_PENDING; 4054 EV_INVOKE_PENDING;
3657 } 4055 }
3658#endif 4056#endif
3659 4057
3660#if EV_PREPARE_ENABLE 4058#if EV_PREPARE_ENABLE
3661 /* queue prepare watchers (and execute them) */ 4059 /* queue prepare watchers (and execute them) */
3662 if (expect_false (preparecnt)) 4060 if (ecb_expect_false (preparecnt))
3663 { 4061 {
3664 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3665 EV_INVOKE_PENDING; 4063 EV_INVOKE_PENDING;
3666 } 4064 }
3667#endif 4065#endif
3668 4066
3669 if (expect_false (loop_done)) 4067 if (ecb_expect_false (loop_done))
3670 break; 4068 break;
3671 4069
3672 /* we might have forked, so reify kernel state if necessary */ 4070 /* we might have forked, so reify kernel state if necessary */
3673 if (expect_false (postfork)) 4071 if (ecb_expect_false (postfork))
3674 loop_fork (EV_A); 4072 loop_fork (EV_A);
3675 4073
3676 /* update fd-related kernel structures */ 4074 /* update fd-related kernel structures */
3677 fd_reify (EV_A); 4075 fd_reify (EV_A);
3678 4076
… …
3683 4081
3684 /* remember old timestamp for io_blocktime calculation */ 4082 /* remember old timestamp for io_blocktime calculation */
3685 ev_tstamp prev_mn_now = mn_now; 4083 ev_tstamp prev_mn_now = mn_now;
3686 4084
3687 /* update time to cancel out callback processing overhead */ 4085 /* update time to cancel out callback processing overhead */
3688 time_update (EV_A_ 1e100); 4086 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3689 4087
3690 /* from now on, we want a pipe-wake-up */ 4088 /* from now on, we want a pipe-wake-up */
3691 pipe_write_wanted = 1; 4089 pipe_write_wanted = 1;
3692 4090
3693 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 4091 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3694 4092
3695 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 4093 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3696 { 4094 {
3697 waittime = MAX_BLOCKTIME; 4095 waittime = EV_TS_CONST (MAX_BLOCKTIME);
4096
4097#if EV_USE_MONOTONIC
4098 if (ecb_expect_true (have_monotonic))
4099 {
4100#if EV_USE_TIMERFD
4101 /* sleep a lot longer when we can reliably detect timejumps */
4102 if (ecb_expect_true (timerfd != -1))
4103 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4104#endif
4105#if !EV_PERIODIC_ENABLE
4106 /* without periodics but with monotonic clock there is no need */
4107 /* for any time jump detection, so sleep longer */
4108 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4109#endif
4110 }
4111#endif
3698 4112
3699 if (timercnt) 4113 if (timercnt)
3700 { 4114 {
3701 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 4115 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3702 if (waittime > to) waittime = to; 4116 if (waittime > to) waittime = to;
… …
3709 if (waittime > to) waittime = to; 4123 if (waittime > to) waittime = to;
3710 } 4124 }
3711#endif 4125#endif
3712 4126
3713 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4127 /* don't let timeouts decrease the waittime below timeout_blocktime */
3714 if (expect_false (waittime < timeout_blocktime)) 4128 if (ecb_expect_false (waittime < timeout_blocktime))
3715 waittime = timeout_blocktime; 4129 waittime = timeout_blocktime;
3716 4130
3717 /* at this point, we NEED to wait, so we have to ensure */ 4131 /* now there are two more special cases left, either we have
3718 /* to pass a minimum nonzero value to the backend */ 4132 * already-expired timers, so we should not sleep, or we have timers
4133 * that expire very soon, in which case we need to wait for a minimum
4134 * amount of time for some event loop backends.
4135 */
3719 if (expect_false (waittime < backend_mintime)) 4136 if (ecb_expect_false (waittime < backend_mintime))
4137 waittime = waittime <= EV_TS_CONST (0.)
4138 ? EV_TS_CONST (0.)
3720 waittime = backend_mintime; 4139 : backend_mintime;
3721 4140
3722 /* extra check because io_blocktime is commonly 0 */ 4141 /* extra check because io_blocktime is commonly 0 */
3723 if (expect_false (io_blocktime)) 4142 if (ecb_expect_false (io_blocktime))
3724 { 4143 {
3725 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4144 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3726 4145
3727 if (sleeptime > waittime - backend_mintime) 4146 if (sleeptime > waittime - backend_mintime)
3728 sleeptime = waittime - backend_mintime; 4147 sleeptime = waittime - backend_mintime;
3729 4148
3730 if (expect_true (sleeptime > 0.)) 4149 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3731 { 4150 {
3732 ev_sleep (sleeptime); 4151 ev_sleep (sleeptime);
3733 waittime -= sleeptime; 4152 waittime -= sleeptime;
3734 } 4153 }
3735 } 4154 }
… …
3749 { 4168 {
3750 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4169 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3751 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4170 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3752 } 4171 }
3753 4172
3754
3755 /* update ev_rt_now, do magic */ 4173 /* update ev_rt_now, do magic */
3756 time_update (EV_A_ waittime + sleeptime); 4174 time_update (EV_A_ waittime + sleeptime);
3757 } 4175 }
3758 4176
3759 /* queue pending timers and reschedule them */ 4177 /* queue pending timers and reschedule them */
… …
3767 idle_reify (EV_A); 4185 idle_reify (EV_A);
3768#endif 4186#endif
3769 4187
3770#if EV_CHECK_ENABLE 4188#if EV_CHECK_ENABLE
3771 /* queue check watchers, to be executed first */ 4189 /* queue check watchers, to be executed first */
3772 if (expect_false (checkcnt)) 4190 if (ecb_expect_false (checkcnt))
3773 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4191 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3774#endif 4192#endif
3775 4193
3776 EV_INVOKE_PENDING; 4194 EV_INVOKE_PENDING;
3777 } 4195 }
3778 while (expect_true ( 4196 while (ecb_expect_true (
3779 activecnt 4197 activecnt
3780 && !loop_done 4198 && !loop_done
3781 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4199 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3782 )); 4200 ));
3783 4201
… …
3810} 4228}
3811 4229
3812void 4230void
3813ev_now_update (EV_P) EV_NOEXCEPT 4231ev_now_update (EV_P) EV_NOEXCEPT
3814{ 4232{
3815 time_update (EV_A_ 1e100); 4233 time_update (EV_A_ EV_TSTAMP_HUGE);
3816} 4234}
3817 4235
3818void 4236void
3819ev_suspend (EV_P) EV_NOEXCEPT 4237ev_suspend (EV_P) EV_NOEXCEPT
3820{ 4238{
… …
3847inline_size void 4265inline_size void
3848wlist_del (WL *head, WL elem) 4266wlist_del (WL *head, WL elem)
3849{ 4267{
3850 while (*head) 4268 while (*head)
3851 { 4269 {
3852 if (expect_true (*head == elem)) 4270 if (ecb_expect_true (*head == elem))
3853 { 4271 {
3854 *head = elem->next; 4272 *head = elem->next;
3855 break; 4273 break;
3856 } 4274 }
3857 4275
… …
3874ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT 4292ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3875{ 4293{
3876 W w_ = (W)w; 4294 W w_ = (W)w;
3877 int pending = w_->pending; 4295 int pending = w_->pending;
3878 4296
3879 if (expect_true (pending)) 4297 if (ecb_expect_true (pending))
3880 { 4298 {
3881 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4299 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3882 p->w = (W)&pending_w; 4300 p->w = (W)&pending_w;
3883 w_->pending = 0; 4301 w_->pending = 0;
3884 return p->events; 4302 return p->events;
… …
3911 w->active = 0; 4329 w->active = 0;
3912} 4330}
3913 4331
3914/*****************************************************************************/ 4332/*****************************************************************************/
3915 4333
3916noinline 4334ecb_noinline
3917void 4335void
3918ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT 4336ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3919{ 4337{
3920 int fd = w->fd; 4338 int fd = w->fd;
3921 4339
3922 if (expect_false (ev_is_active (w))) 4340 if (ecb_expect_false (ev_is_active (w)))
3923 return; 4341 return;
3924 4342
3925 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4343 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3926 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4344 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3927 4345
4346#if EV_VERIFY >= 2
4347 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4348#endif
3928 EV_FREQUENT_CHECK; 4349 EV_FREQUENT_CHECK;
3929 4350
3930 ev_start (EV_A_ (W)w, 1); 4351 ev_start (EV_A_ (W)w, 1);
3931 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill); 4352 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3932 wlist_add (&anfds[fd].head, (WL)w); 4353 wlist_add (&anfds[fd].head, (WL)w);
… …
3938 w->events &= ~EV__IOFDSET; 4359 w->events &= ~EV__IOFDSET;
3939 4360
3940 EV_FREQUENT_CHECK; 4361 EV_FREQUENT_CHECK;
3941} 4362}
3942 4363
3943noinline 4364ecb_noinline
3944void 4365void
3945ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT 4366ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3946{ 4367{
3947 clear_pending (EV_A_ (W)w); 4368 clear_pending (EV_A_ (W)w);
3948 if (expect_false (!ev_is_active (w))) 4369 if (ecb_expect_false (!ev_is_active (w)))
3949 return; 4370 return;
3950 4371
3951 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4372 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3952 4373
4374#if EV_VERIFY >= 2
4375 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4376#endif
3953 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
3954 4378
3955 wlist_del (&anfds[w->fd].head, (WL)w); 4379 wlist_del (&anfds[w->fd].head, (WL)w);
3956 ev_stop (EV_A_ (W)w); 4380 ev_stop (EV_A_ (W)w);
3957 4381
3958 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4382 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3959 4383
3960 EV_FREQUENT_CHECK; 4384 EV_FREQUENT_CHECK;
3961} 4385}
3962 4386
3963noinline 4387ecb_noinline
3964void 4388void
3965ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT 4389ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3966{ 4390{
3967 if (expect_false (ev_is_active (w))) 4391 if (ecb_expect_false (ev_is_active (w)))
3968 return; 4392 return;
3969 4393
3970 ev_at (w) += mn_now; 4394 ev_at (w) += mn_now;
3971 4395
3972 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4396 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
… …
3983 EV_FREQUENT_CHECK; 4407 EV_FREQUENT_CHECK;
3984 4408
3985 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4409 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3986} 4410}
3987 4411
3988noinline 4412ecb_noinline
3989void 4413void
3990ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT 4414ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3991{ 4415{
3992 clear_pending (EV_A_ (W)w); 4416 clear_pending (EV_A_ (W)w);
3993 if (expect_false (!ev_is_active (w))) 4417 if (ecb_expect_false (!ev_is_active (w)))
3994 return; 4418 return;
3995 4419
3996 EV_FREQUENT_CHECK; 4420 EV_FREQUENT_CHECK;
3997 4421
3998 { 4422 {
… …
4000 4424
4001 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4425 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
4002 4426
4003 --timercnt; 4427 --timercnt;
4004 4428
4005 if (expect_true (active < timercnt + HEAP0)) 4429 if (ecb_expect_true (active < timercnt + HEAP0))
4006 { 4430 {
4007 timers [active] = timers [timercnt + HEAP0]; 4431 timers [active] = timers [timercnt + HEAP0];
4008 adjustheap (timers, timercnt, active); 4432 adjustheap (timers, timercnt, active);
4009 } 4433 }
4010 } 4434 }
… …
4014 ev_stop (EV_A_ (W)w); 4438 ev_stop (EV_A_ (W)w);
4015 4439
4016 EV_FREQUENT_CHECK; 4440 EV_FREQUENT_CHECK;
4017} 4441}
4018 4442
4019noinline 4443ecb_noinline
4020void 4444void
4021ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT 4445ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
4022{ 4446{
4023 EV_FREQUENT_CHECK; 4447 EV_FREQUENT_CHECK;
4024 4448
… …
4045} 4469}
4046 4470
4047ev_tstamp 4471ev_tstamp
4048ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT 4472ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
4049{ 4473{
4050 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4474 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
4051} 4475}
4052 4476
4053#if EV_PERIODIC_ENABLE 4477#if EV_PERIODIC_ENABLE
4054noinline 4478ecb_noinline
4055void 4479void
4056ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT 4480ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
4057{ 4481{
4058 if (expect_false (ev_is_active (w))) 4482 if (ecb_expect_false (ev_is_active (w)))
4059 return; 4483 return;
4484
4485#if EV_USE_TIMERFD
4486 if (timerfd == -2)
4487 evtimerfd_init (EV_A);
4488#endif
4060 4489
4061 if (w->reschedule_cb) 4490 if (w->reschedule_cb)
4062 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4491 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
4063 else if (w->interval) 4492 else if (w->interval)
4064 { 4493 {
… …
4080 EV_FREQUENT_CHECK; 4509 EV_FREQUENT_CHECK;
4081 4510
4082 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4511 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
4083} 4512}
4084 4513
4085noinline 4514ecb_noinline
4086void 4515void
4087ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT 4516ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
4088{ 4517{
4089 clear_pending (EV_A_ (W)w); 4518 clear_pending (EV_A_ (W)w);
4090 if (expect_false (!ev_is_active (w))) 4519 if (ecb_expect_false (!ev_is_active (w)))
4091 return; 4520 return;
4092 4521
4093 EV_FREQUENT_CHECK; 4522 EV_FREQUENT_CHECK;
4094 4523
4095 { 4524 {
… …
4097 4526
4098 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4527 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
4099 4528
4100 --periodiccnt; 4529 --periodiccnt;
4101 4530
4102 if (expect_true (active < periodiccnt + HEAP0)) 4531 if (ecb_expect_true (active < periodiccnt + HEAP0))
4103 { 4532 {
4104 periodics [active] = periodics [periodiccnt + HEAP0]; 4533 periodics [active] = periodics [periodiccnt + HEAP0];
4105 adjustheap (periodics, periodiccnt, active); 4534 adjustheap (periodics, periodiccnt, active);
4106 } 4535 }
4107 } 4536 }
… …
4109 ev_stop (EV_A_ (W)w); 4538 ev_stop (EV_A_ (W)w);
4110 4539
4111 EV_FREQUENT_CHECK; 4540 EV_FREQUENT_CHECK;
4112} 4541}
4113 4542
4114noinline 4543ecb_noinline
4115void 4544void
4116ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT 4545ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
4117{ 4546{
4118 /* TODO: use adjustheap and recalculation */ 4547 /* TODO: use adjustheap and recalculation */
4119 ev_periodic_stop (EV_A_ w); 4548 ev_periodic_stop (EV_A_ w);
… …
4125# define SA_RESTART 0 4554# define SA_RESTART 0
4126#endif 4555#endif
4127 4556
4128#if EV_SIGNAL_ENABLE 4557#if EV_SIGNAL_ENABLE
4129 4558
4130noinline 4559ecb_noinline
4131void 4560void
4132ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT 4561ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
4133{ 4562{
4134 if (expect_false (ev_is_active (w))) 4563 if (ecb_expect_false (ev_is_active (w)))
4135 return; 4564 return;
4136 4565
4137 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4566 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
4138 4567
4139#if EV_MULTIPLICITY 4568#if EV_MULTIPLICITY
… …
4208 } 4637 }
4209 4638
4210 EV_FREQUENT_CHECK; 4639 EV_FREQUENT_CHECK;
4211} 4640}
4212 4641
4213noinline 4642ecb_noinline
4214void 4643void
4215ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT 4644ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
4216{ 4645{
4217 clear_pending (EV_A_ (W)w); 4646 clear_pending (EV_A_ (W)w);
4218 if (expect_false (!ev_is_active (w))) 4647 if (ecb_expect_false (!ev_is_active (w)))
4219 return; 4648 return;
4220 4649
4221 EV_FREQUENT_CHECK; 4650 EV_FREQUENT_CHECK;
4222 4651
4223 wlist_del (&signals [w->signum - 1].head, (WL)w); 4652 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
4256ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT 4685ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
4257{ 4686{
4258#if EV_MULTIPLICITY 4687#if EV_MULTIPLICITY
4259 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4688 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
4260#endif 4689#endif
4261 if (expect_false (ev_is_active (w))) 4690 if (ecb_expect_false (ev_is_active (w)))
4262 return; 4691 return;
4263 4692
4264 EV_FREQUENT_CHECK; 4693 EV_FREQUENT_CHECK;
4265 4694
4266 ev_start (EV_A_ (W)w, 1); 4695 ev_start (EV_A_ (W)w, 1);
… …
4271 4700
4272void 4701void
4273ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT 4702ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
4274{ 4703{
4275 clear_pending (EV_A_ (W)w); 4704 clear_pending (EV_A_ (W)w);
4276 if (expect_false (!ev_is_active (w))) 4705 if (ecb_expect_false (!ev_is_active (w)))
4277 return; 4706 return;
4278 4707
4279 EV_FREQUENT_CHECK; 4708 EV_FREQUENT_CHECK;
4280 4709
4281 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4710 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
4295 4724
4296#define DEF_STAT_INTERVAL 5.0074891 4725#define DEF_STAT_INTERVAL 5.0074891
4297#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4726#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
4298#define MIN_STAT_INTERVAL 0.1074891 4727#define MIN_STAT_INTERVAL 0.1074891
4299 4728
4300noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4729ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
4301 4730
4302#if EV_USE_INOTIFY 4731#if EV_USE_INOTIFY
4303 4732
4304/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4733/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4305# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4734# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4306 4735
4307noinline 4736ecb_noinline
4308static void 4737static void
4309infy_add (EV_P_ ev_stat *w) 4738infy_add (EV_P_ ev_stat *w)
4310{ 4739{
4311 w->wd = inotify_add_watch (fs_fd, w->path, 4740 w->wd = inotify_add_watch (fs_fd, w->path,
4312 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4741 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
… …
4377 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4806 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4378 ev_timer_again (EV_A_ &w->timer); 4807 ev_timer_again (EV_A_ &w->timer);
4379 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4808 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4380} 4809}
4381 4810
4382noinline 4811ecb_noinline
4383static void 4812static void
4384infy_del (EV_P_ ev_stat *w) 4813infy_del (EV_P_ ev_stat *w)
4385{ 4814{
4386 int slot; 4815 int slot;
4387 int wd = w->wd; 4816 int wd = w->wd;
… …
4395 4824
4396 /* remove this watcher, if others are watching it, they will rearm */ 4825 /* remove this watcher, if others are watching it, they will rearm */
4397 inotify_rm_watch (fs_fd, wd); 4826 inotify_rm_watch (fs_fd, wd);
4398} 4827}
4399 4828
4400noinline 4829ecb_noinline
4401static void 4830static void
4402infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4831infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4403{ 4832{
4404 if (slot < 0) 4833 if (slot < 0)
4405 /* overflow, need to check for all hash slots */ 4834 /* overflow, need to check for all hash slots */
… …
4551 w->attr.st_nlink = 0; 4980 w->attr.st_nlink = 0;
4552 else if (!w->attr.st_nlink) 4981 else if (!w->attr.st_nlink)
4553 w->attr.st_nlink = 1; 4982 w->attr.st_nlink = 1;
4554} 4983}
4555 4984
4556noinline 4985ecb_noinline
4557static void 4986static void
4558stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4987stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4559{ 4988{
4560 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4989 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4561 4990
… …
4595} 5024}
4596 5025
4597void 5026void
4598ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT 5027ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4599{ 5028{
4600 if (expect_false (ev_is_active (w))) 5029 if (ecb_expect_false (ev_is_active (w)))
4601 return; 5030 return;
4602 5031
4603 ev_stat_stat (EV_A_ w); 5032 ev_stat_stat (EV_A_ w);
4604 5033
4605 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5034 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
4627 5056
4628void 5057void
4629ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT 5058ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4630{ 5059{
4631 clear_pending (EV_A_ (W)w); 5060 clear_pending (EV_A_ (W)w);
4632 if (expect_false (!ev_is_active (w))) 5061 if (ecb_expect_false (!ev_is_active (w)))
4633 return; 5062 return;
4634 5063
4635 EV_FREQUENT_CHECK; 5064 EV_FREQUENT_CHECK;
4636 5065
4637#if EV_USE_INOTIFY 5066#if EV_USE_INOTIFY
… …
4652 5081
4653#if EV_IDLE_ENABLE 5082#if EV_IDLE_ENABLE
4654void 5083void
4655ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT 5084ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4656{ 5085{
4657 if (expect_false (ev_is_active (w))) 5086 if (ecb_expect_false (ev_is_active (w)))
4658 return; 5087 return;
4659 5088
4660 pri_adjust (EV_A_ (W)w); 5089 pri_adjust (EV_A_ (W)w);
4661 5090
4662 EV_FREQUENT_CHECK; 5091 EV_FREQUENT_CHECK;
… …
4676 5105
4677void 5106void
4678ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT 5107ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4679{ 5108{
4680 clear_pending (EV_A_ (W)w); 5109 clear_pending (EV_A_ (W)w);
4681 if (expect_false (!ev_is_active (w))) 5110 if (ecb_expect_false (!ev_is_active (w)))
4682 return; 5111 return;
4683 5112
4684 EV_FREQUENT_CHECK; 5113 EV_FREQUENT_CHECK;
4685 5114
4686 { 5115 {
… …
4699 5128
4700#if EV_PREPARE_ENABLE 5129#if EV_PREPARE_ENABLE
4701void 5130void
4702ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT 5131ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4703{ 5132{
4704 if (expect_false (ev_is_active (w))) 5133 if (ecb_expect_false (ev_is_active (w)))
4705 return; 5134 return;
4706 5135
4707 EV_FREQUENT_CHECK; 5136 EV_FREQUENT_CHECK;
4708 5137
4709 ev_start (EV_A_ (W)w, ++preparecnt); 5138 ev_start (EV_A_ (W)w, ++preparecnt);
… …
4715 5144
4716void 5145void
4717ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT 5146ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4718{ 5147{
4719 clear_pending (EV_A_ (W)w); 5148 clear_pending (EV_A_ (W)w);
4720 if (expect_false (!ev_is_active (w))) 5149 if (ecb_expect_false (!ev_is_active (w)))
4721 return; 5150 return;
4722 5151
4723 EV_FREQUENT_CHECK; 5152 EV_FREQUENT_CHECK;
4724 5153
4725 { 5154 {
… …
4737 5166
4738#if EV_CHECK_ENABLE 5167#if EV_CHECK_ENABLE
4739void 5168void
4740ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT 5169ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4741{ 5170{
4742 if (expect_false (ev_is_active (w))) 5171 if (ecb_expect_false (ev_is_active (w)))
4743 return; 5172 return;
4744 5173
4745 EV_FREQUENT_CHECK; 5174 EV_FREQUENT_CHECK;
4746 5175
4747 ev_start (EV_A_ (W)w, ++checkcnt); 5176 ev_start (EV_A_ (W)w, ++checkcnt);
… …
4753 5182
4754void 5183void
4755ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT 5184ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4756{ 5185{
4757 clear_pending (EV_A_ (W)w); 5186 clear_pending (EV_A_ (W)w);
4758 if (expect_false (!ev_is_active (w))) 5187 if (ecb_expect_false (!ev_is_active (w)))
4759 return; 5188 return;
4760 5189
4761 EV_FREQUENT_CHECK; 5190 EV_FREQUENT_CHECK;
4762 5191
4763 { 5192 {
… …
4772 EV_FREQUENT_CHECK; 5201 EV_FREQUENT_CHECK;
4773} 5202}
4774#endif 5203#endif
4775 5204
4776#if EV_EMBED_ENABLE 5205#if EV_EMBED_ENABLE
4777noinline 5206ecb_noinline
4778void 5207void
4779ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT 5208ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4780{ 5209{
4781 ev_run (w->other, EVRUN_NOWAIT); 5210 ev_run (w->other, EVRUN_NOWAIT);
4782} 5211}
… …
4806 ev_run (EV_A_ EVRUN_NOWAIT); 5235 ev_run (EV_A_ EVRUN_NOWAIT);
4807 } 5236 }
4808 } 5237 }
4809} 5238}
4810 5239
5240#if EV_FORK_ENABLE
4811static void 5241static void
4812embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5242embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4813{ 5243{
4814 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5244 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4815 5245
… …
4822 ev_run (EV_A_ EVRUN_NOWAIT); 5252 ev_run (EV_A_ EVRUN_NOWAIT);
4823 } 5253 }
4824 5254
4825 ev_embed_start (EV_A_ w); 5255 ev_embed_start (EV_A_ w);
4826} 5256}
5257#endif
4827 5258
4828#if 0 5259#if 0
4829static void 5260static void
4830embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5261embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4831{ 5262{
… …
4834#endif 5265#endif
4835 5266
4836void 5267void
4837ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT 5268ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4838{ 5269{
4839 if (expect_false (ev_is_active (w))) 5270 if (ecb_expect_false (ev_is_active (w)))
4840 return; 5271 return;
4841 5272
4842 { 5273 {
4843 EV_P = w->other; 5274 EV_P = w->other;
4844 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5275 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4852 5283
4853 ev_prepare_init (&w->prepare, embed_prepare_cb); 5284 ev_prepare_init (&w->prepare, embed_prepare_cb);
4854 ev_set_priority (&w->prepare, EV_MINPRI); 5285 ev_set_priority (&w->prepare, EV_MINPRI);
4855 ev_prepare_start (EV_A_ &w->prepare); 5286 ev_prepare_start (EV_A_ &w->prepare);
4856 5287
5288#if EV_FORK_ENABLE
4857 ev_fork_init (&w->fork, embed_fork_cb); 5289 ev_fork_init (&w->fork, embed_fork_cb);
4858 ev_fork_start (EV_A_ &w->fork); 5290 ev_fork_start (EV_A_ &w->fork);
5291#endif
4859 5292
4860 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5293 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4861 5294
4862 ev_start (EV_A_ (W)w, 1); 5295 ev_start (EV_A_ (W)w, 1);
4863 5296
… …
4866 5299
4867void 5300void
4868ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT 5301ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4869{ 5302{
4870 clear_pending (EV_A_ (W)w); 5303 clear_pending (EV_A_ (W)w);
4871 if (expect_false (!ev_is_active (w))) 5304 if (ecb_expect_false (!ev_is_active (w)))
4872 return; 5305 return;
4873 5306
4874 EV_FREQUENT_CHECK; 5307 EV_FREQUENT_CHECK;
4875 5308
4876 ev_io_stop (EV_A_ &w->io); 5309 ev_io_stop (EV_A_ &w->io);
4877 ev_prepare_stop (EV_A_ &w->prepare); 5310 ev_prepare_stop (EV_A_ &w->prepare);
5311#if EV_FORK_ENABLE
4878 ev_fork_stop (EV_A_ &w->fork); 5312 ev_fork_stop (EV_A_ &w->fork);
5313#endif
4879 5314
4880 ev_stop (EV_A_ (W)w); 5315 ev_stop (EV_A_ (W)w);
4881 5316
4882 EV_FREQUENT_CHECK; 5317 EV_FREQUENT_CHECK;
4883} 5318}
… …
4885 5320
4886#if EV_FORK_ENABLE 5321#if EV_FORK_ENABLE
4887void 5322void
4888ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT 5323ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4889{ 5324{
4890 if (expect_false (ev_is_active (w))) 5325 if (ecb_expect_false (ev_is_active (w)))
4891 return; 5326 return;
4892 5327
4893 EV_FREQUENT_CHECK; 5328 EV_FREQUENT_CHECK;
4894 5329
4895 ev_start (EV_A_ (W)w, ++forkcnt); 5330 ev_start (EV_A_ (W)w, ++forkcnt);
… …
4901 5336
4902void 5337void
4903ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT 5338ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4904{ 5339{
4905 clear_pending (EV_A_ (W)w); 5340 clear_pending (EV_A_ (W)w);
4906 if (expect_false (!ev_is_active (w))) 5341 if (ecb_expect_false (!ev_is_active (w)))
4907 return; 5342 return;
4908 5343
4909 EV_FREQUENT_CHECK; 5344 EV_FREQUENT_CHECK;
4910 5345
4911 { 5346 {
… …
4923 5358
4924#if EV_CLEANUP_ENABLE 5359#if EV_CLEANUP_ENABLE
4925void 5360void
4926ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT 5361ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4927{ 5362{
4928 if (expect_false (ev_is_active (w))) 5363 if (ecb_expect_false (ev_is_active (w)))
4929 return; 5364 return;
4930 5365
4931 EV_FREQUENT_CHECK; 5366 EV_FREQUENT_CHECK;
4932 5367
4933 ev_start (EV_A_ (W)w, ++cleanupcnt); 5368 ev_start (EV_A_ (W)w, ++cleanupcnt);
… …
4941 5376
4942void 5377void
4943ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT 5378ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4944{ 5379{
4945 clear_pending (EV_A_ (W)w); 5380 clear_pending (EV_A_ (W)w);
4946 if (expect_false (!ev_is_active (w))) 5381 if (ecb_expect_false (!ev_is_active (w)))
4947 return; 5382 return;
4948 5383
4949 EV_FREQUENT_CHECK; 5384 EV_FREQUENT_CHECK;
4950 ev_ref (EV_A); 5385 ev_ref (EV_A);
4951 5386
… …
4964 5399
4965#if EV_ASYNC_ENABLE 5400#if EV_ASYNC_ENABLE
4966void 5401void
4967ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT 5402ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4968{ 5403{
4969 if (expect_false (ev_is_active (w))) 5404 if (ecb_expect_false (ev_is_active (w)))
4970 return; 5405 return;
4971 5406
4972 w->sent = 0; 5407 w->sent = 0;
4973 5408
4974 evpipe_init (EV_A); 5409 evpipe_init (EV_A);
… …
4984 5419
4985void 5420void
4986ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT 5421ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4987{ 5422{
4988 clear_pending (EV_A_ (W)w); 5423 clear_pending (EV_A_ (W)w);
4989 if (expect_false (!ev_is_active (w))) 5424 if (ecb_expect_false (!ev_is_active (w)))
4990 return; 5425 return;
4991 5426
4992 EV_FREQUENT_CHECK; 5427 EV_FREQUENT_CHECK;
4993 5428
4994 { 5429 {

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