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Comparing libev/ev.c (file contents):
Revision 1.398 by root, Sun Sep 25 21:27:35 2011 UTC vs.
Revision 1.444 by root, Fri Jun 1 22:01:13 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 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 *
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
183# include EV_H 183# include EV_H
184#else 184#else
185# include "ev.h" 185# include "ev.h"
186#endif 186#endif
187 187
188EV_CPP(extern "C" {) 188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
197#endif
189 198
190#ifndef _WIN32 199#ifndef _WIN32
191# include <sys/time.h> 200# include <sys/time.h>
192# include <sys/wait.h> 201# include <sys/wait.h>
193# include <unistd.h> 202# include <unistd.h>
194#else 203#else
195# include <io.h> 204# include <io.h>
196# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
197# include <windows.h> 207# include <windows.h>
198# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
199# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
200# endif 210# endif
201# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
210#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
211 221
212/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
213 223
214/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG) 225#if defined EV_NSIG
216/* use what's provided */ 226/* use what's provided */
217#elif defined (NSIG) 227#elif defined NSIG
218# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
219#elif defined(_NSIG) 229#elif defined _NSIG
220# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX) 231#elif defined SIGMAX
222# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX) 233#elif defined SIG_MAX
224# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
226# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG) 237#elif defined MAXSIG
228# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG) 239#elif defined MAX_SIG
230# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig) 243#elif defined _sys_nsig
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else 245#else
236# error "unable to find value for NSIG, please report" 246# error "unable to find value for NSIG, please report"
237/* to make it compile regardless, just remove the above line, */ 247/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */ 248/* but consider reporting it, too! :) */
250# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
251# endif 261# endif
252#endif 262#endif
253 263
254#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 266# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 267# else
258# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
259# endif 269# endif
260#endif 270#endif
350#endif 360#endif
351 361
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */ 363/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 365# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
360# else 370# else
386# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
387#endif 397#endif
388 398
389#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */ 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux) 401# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 402# include <sys/select.h>
393# endif 403# endif
394#endif 404#endif
395 405
396#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 409/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
403# endif 413# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif 414#endif
409 415
410#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
412# include <stdint.h> 418# include <stdint.h>
469/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ECB.H BEGIN */ 476/* ECB.H BEGIN */
471/* 477/*
472 * libecb - http://software.schmorp.de/pkg/libecb 478 * libecb - http://software.schmorp.de/pkg/libecb
473 * 479 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> 480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta 481 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved. 482 * All rights reserved.
477 * 483 *
478 * Redistribution and use in source and binary forms, with or without modifica- 484 * Redistribution and use in source and binary forms, with or without modifica-
479 * tion, are permitted provided that the following conditions are met: 485 * tion, are permitted provided that the following conditions are met:
498 */ 504 */
499 505
500#ifndef ECB_H 506#ifndef ECB_H
501#define ECB_H 507#define ECB_H
502 508
509/* 16 bits major, 16 bits minor */
510#define ECB_VERSION 0x00010001
511
503#ifdef _WIN32 512#ifdef _WIN32
504 typedef signed char int8_t; 513 typedef signed char int8_t;
505 typedef unsigned char uint8_t; 514 typedef unsigned char uint8_t;
506 typedef signed short int16_t; 515 typedef signed short int16_t;
507 typedef unsigned short uint16_t; 516 typedef unsigned short uint16_t;
512 typedef unsigned long long uint64_t; 521 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */ 522 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t; 523 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t; 524 typedef unsigned __int64 uint64_t;
516 #endif 525 #endif
526 #ifdef _WIN64
527 #define ECB_PTRSIZE 8
528 typedef uint64_t uintptr_t;
529 typedef int64_t intptr_t;
530 #else
531 #define ECB_PTRSIZE 4
532 typedef uint32_t uintptr_t;
533 typedef int32_t intptr_t;
534 #endif
535 typedef intptr_t ptrdiff_t;
517#else 536#else
518 #include <inttypes.h> 537 #include <inttypes.h>
538 #if UINTMAX_MAX > 0xffffffffU
539 #define ECB_PTRSIZE 8
540 #else
541 #define ECB_PTRSIZE 4
542 #endif
519#endif 543#endif
520 544
521/* many compilers define _GNUC_ to some versions but then only implement 545/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions, 546 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers. 547 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so. 548 * or so.
525 * we try to detect these and simply assume they are not gcc - if they have 549 * we try to detect these and simply assume they are not gcc - if they have
526 * an issue with that they should have done it right in the first place. 550 * an issue with that they should have done it right in the first place.
527 */ 551 */
528#ifndef ECB_GCC_VERSION 552#ifndef ECB_GCC_VERSION
529 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 553 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
530 #define ECB_GCC_VERSION(major,minor) 0 554 #define ECB_GCC_VERSION(major,minor) 0
531 #else 555 #else
532 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 556 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
533 #endif 557 #endif
534#endif 558#endif
535 559
560#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
561#define ECB_C99 (__STDC_VERSION__ >= 199901L)
562#define ECB_C11 (__STDC_VERSION__ >= 201112L)
563#define ECB_CPP (__cplusplus+0)
564#define ECB_CPP11 (__cplusplus >= 201103L)
565
536/*****************************************************************************/ 566/*****************************************************************************/
537 567
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 568/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
539/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 569/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
540 570
541#if ECB_NO_THREADS || ECB_NO_SMP 571#if ECB_NO_THREADS
572 #define ECB_NO_SMP 1
573#endif
574
575#if ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0) 576 #define ECB_MEMORY_FENCE do { } while (0)
543#endif 577#endif
544 578
545#ifndef ECB_MEMORY_FENCE 579#ifndef ECB_MEMORY_FENCE
546 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__) 580 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
547 #if __i386__ 581 #if __i386 || __i386__
548 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
549 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 583 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
550 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 584 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
551 #elif __amd64 585 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
552 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 586 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
553 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 587 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
554 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 588 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
555 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 589 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
556 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 590 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
557 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 591 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
558 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 592 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
559 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 593 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
560 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 594 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
561 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 595 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 596 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
597 #elif __sparc || __sparc__
598 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
599 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
600 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
601 #elif defined __s390__ || defined __s390x__
602 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
603 #elif defined __mips__
604 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
605 #elif defined __alpha__
606 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
607 #elif defined __hppa__
608 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
610 #elif defined __ia64__
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
563 #endif 612 #endif
564 #endif 613 #endif
565#endif 614#endif
566 615
567#ifndef ECB_MEMORY_FENCE 616#ifndef ECB_MEMORY_FENCE
617 #if ECB_GCC_VERSION(4,7)
618 /* see comment below (stdatomic.h) about the C11 memory model. */
619 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
620 #elif defined __clang && __has_feature (cxx_atomic)
621 /* see comment below (stdatomic.h) about the C11 memory model. */
622 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
568 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 623 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
569 #define ECB_MEMORY_FENCE __sync_synchronize () 624 #define ECB_MEMORY_FENCE __sync_synchronize ()
570 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
571 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
572 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 625 #elif _MSC_VER >= 1400 /* VC++ 2005 */
573 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 626 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
574 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 627 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
575 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 628 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
576 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 629 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
577 #elif defined(_WIN32) 630 #elif defined _WIN32
578 #include <WinNT.h> 631 #include <WinNT.h>
579 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 632 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
633 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
634 #include <mbarrier.h>
635 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
636 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
637 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
638 #elif __xlC__
639 #define ECB_MEMORY_FENCE __sync ()
640 #endif
641#endif
642
643#ifndef ECB_MEMORY_FENCE
644 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
645 /* we assume that these memory fences work on all variables/all memory accesses, */
646 /* not just C11 atomics and atomic accesses */
647 #include <stdatomic.h>
648 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
649 /* any fence other than seq_cst, which isn't very efficient for us. */
650 /* Why that is, we don't know - either the C11 memory model is quite useless */
651 /* for most usages, or gcc and clang have a bug */
652 /* I *currently* lean towards the latter, and inefficiently implement */
653 /* all three of ecb's fences as a seq_cst fence */
654 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
580 #endif 655 #endif
581#endif 656#endif
582 657
583#ifndef ECB_MEMORY_FENCE 658#ifndef ECB_MEMORY_FENCE
584 #if !ECB_AVOID_PTHREADS 659 #if !ECB_AVOID_PTHREADS
596 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 671 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
597 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 672 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
598 #endif 673 #endif
599#endif 674#endif
600 675
601#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 676#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
602 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 677 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
603#endif 678#endif
604 679
605#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 680#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
606 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 681 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
607#endif 682#endif
608 683
609/*****************************************************************************/ 684/*****************************************************************************/
610
611#define ECB_C99 (__STDC_VERSION__ >= 199901L)
612 685
613#if __cplusplus 686#if __cplusplus
614 #define ecb_inline static inline 687 #define ecb_inline static inline
615#elif ECB_GCC_VERSION(2,5) 688#elif ECB_GCC_VERSION(2,5)
616 #define ecb_inline static __inline__ 689 #define ecb_inline static __inline__
655#elif ECB_GCC_VERSION(3,0) 728#elif ECB_GCC_VERSION(3,0)
656 #define ecb_decltype(x) __typeof(x) 729 #define ecb_decltype(x) __typeof(x)
657#endif 730#endif
658 731
659#define ecb_noinline ecb_attribute ((__noinline__)) 732#define ecb_noinline ecb_attribute ((__noinline__))
660#define ecb_noreturn ecb_attribute ((__noreturn__))
661#define ecb_unused ecb_attribute ((__unused__)) 733#define ecb_unused ecb_attribute ((__unused__))
662#define ecb_const ecb_attribute ((__const__)) 734#define ecb_const ecb_attribute ((__const__))
663#define ecb_pure ecb_attribute ((__pure__)) 735#define ecb_pure ecb_attribute ((__pure__))
736
737#if ECB_C11
738 #define ecb_noreturn _Noreturn
739#else
740 #define ecb_noreturn ecb_attribute ((__noreturn__))
741#endif
664 742
665#if ECB_GCC_VERSION(4,3) 743#if ECB_GCC_VERSION(4,3)
666 #define ecb_artificial ecb_attribute ((__artificial__)) 744 #define ecb_artificial ecb_attribute ((__artificial__))
667 #define ecb_hot ecb_attribute ((__hot__)) 745 #define ecb_hot ecb_attribute ((__hot__))
668 #define ecb_cold ecb_attribute ((__cold__)) 746 #define ecb_cold ecb_attribute ((__cold__))
759 837
760 return r + ecb_ld32 (x); 838 return r + ecb_ld32 (x);
761 } 839 }
762#endif 840#endif
763 841
842ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
843ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
844ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
845ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
846
847ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
848ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
849{
850 return ( (x * 0x0802U & 0x22110U)
851 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
852}
853
854ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
855ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
856{
857 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
858 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
859 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
860 x = ( x >> 8 ) | ( x << 8);
861
862 return x;
863}
864
865ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
866ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
867{
868 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
869 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
870 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
871 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
872 x = ( x >> 16 ) | ( x << 16);
873
874 return x;
875}
876
764/* popcount64 is only available on 64 bit cpus as gcc builtin */ 877/* popcount64 is only available on 64 bit cpus as gcc builtin */
765/* so for this version we are lazy */ 878/* so for this version we are lazy */
766ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 879ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
767ecb_function_ int 880ecb_function_ int
768ecb_popcount64 (uint64_t x) 881ecb_popcount64 (uint64_t x)
817 930
818#if ECB_GCC_VERSION(4,5) 931#if ECB_GCC_VERSION(4,5)
819 #define ecb_unreachable() __builtin_unreachable () 932 #define ecb_unreachable() __builtin_unreachable ()
820#else 933#else
821 /* this seems to work fine, but gcc always emits a warning for it :/ */ 934 /* this seems to work fine, but gcc always emits a warning for it :/ */
822 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 935 ecb_inline void ecb_unreachable (void) ecb_noreturn;
823 ecb_function_ void ecb_unreachable (void) { } 936 ecb_inline void ecb_unreachable (void) { }
824#endif 937#endif
825 938
826/* try to tell the compiler that some condition is definitely true */ 939/* try to tell the compiler that some condition is definitely true */
827#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 940#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
828 941
829ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 942ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
830ecb_function_ unsigned char 943ecb_inline unsigned char
831ecb_byteorder_helper (void) 944ecb_byteorder_helper (void)
832{ 945{
833 const uint32_t u = 0x11223344; 946 const uint32_t u = 0x11223344;
834 return *(unsigned char *)&u; 947 return *(unsigned char *)&u;
835} 948}
836 949
837ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 950ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
838ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 951ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
839ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 952ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
840ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 953ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
841 954
842#if ECB_GCC_VERSION(3,0) || ECB_C99 955#if ECB_GCC_VERSION(3,0) || ECB_C99
843 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 956 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
844#else 957#else
845 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 958 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
878 991
879#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 992#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
880/* if your architecture doesn't need memory fences, e.g. because it is 993/* if your architecture doesn't need memory fences, e.g. because it is
881 * single-cpu/core, or if you use libev in a project that doesn't use libev 994 * single-cpu/core, or if you use libev in a project that doesn't use libev
882 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 995 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
883 * libev, in which casess the memory fences become nops. 996 * libev, in which cases the memory fences become nops.
884 * alternatively, you can remove this #error and link against libpthread, 997 * alternatively, you can remove this #error and link against libpthread,
885 * which will then provide the memory fences. 998 * which will then provide the memory fences.
886 */ 999 */
887# error "memory fences not defined for your architecture, please report" 1000# error "memory fences not defined for your architecture, please report"
888#endif 1001#endif
1045{ 1158{
1046 write (STDERR_FILENO, msg, strlen (msg)); 1159 write (STDERR_FILENO, msg, strlen (msg));
1047} 1160}
1048#endif 1161#endif
1049 1162
1050static void (*syserr_cb)(const char *msg); 1163static void (*syserr_cb)(const char *msg) EV_THROW;
1051 1164
1052void ecb_cold 1165void ecb_cold
1053ev_set_syserr_cb (void (*cb)(const char *msg)) 1166ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
1054{ 1167{
1055 syserr_cb = cb; 1168 syserr_cb = cb;
1056} 1169}
1057 1170
1058static void noinline ecb_cold 1171static void noinline ecb_cold
1076 abort (); 1189 abort ();
1077 } 1190 }
1078} 1191}
1079 1192
1080static void * 1193static void *
1081ev_realloc_emul (void *ptr, long size) 1194ev_realloc_emul (void *ptr, long size) EV_THROW
1082{ 1195{
1083#if __GLIBC__ 1196#if __GLIBC__
1084 return realloc (ptr, size); 1197 return realloc (ptr, size);
1085#else 1198#else
1086 /* some systems, notably openbsd and darwin, fail to properly 1199 /* some systems, notably openbsd and darwin, fail to properly
1094 free (ptr); 1207 free (ptr);
1095 return 0; 1208 return 0;
1096#endif 1209#endif
1097} 1210}
1098 1211
1099static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1212static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1100 1213
1101void ecb_cold 1214void ecb_cold
1102ev_set_allocator (void *(*cb)(void *ptr, long size)) 1215ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
1103{ 1216{
1104 alloc = cb; 1217 alloc = cb;
1105} 1218}
1106 1219
1107inline_speed void * 1220inline_speed void *
1195 #undef VAR 1308 #undef VAR
1196 }; 1309 };
1197 #include "ev_wrap.h" 1310 #include "ev_wrap.h"
1198 1311
1199 static struct ev_loop default_loop_struct; 1312 static struct ev_loop default_loop_struct;
1200 struct ev_loop *ev_default_loop_ptr; 1313 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1201 1314
1202#else 1315#else
1203 1316
1204 ev_tstamp ev_rt_now; 1317 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
1205 #define VAR(name,decl) static decl; 1318 #define VAR(name,decl) static decl;
1206 #include "ev_vars.h" 1319 #include "ev_vars.h"
1207 #undef VAR 1320 #undef VAR
1208 1321
1209 static int ev_default_loop_ptr; 1322 static int ev_default_loop_ptr;
1224 1337
1225/*****************************************************************************/ 1338/*****************************************************************************/
1226 1339
1227#ifndef EV_HAVE_EV_TIME 1340#ifndef EV_HAVE_EV_TIME
1228ev_tstamp 1341ev_tstamp
1229ev_time (void) 1342ev_time (void) EV_THROW
1230{ 1343{
1231#if EV_USE_REALTIME 1344#if EV_USE_REALTIME
1232 if (expect_true (have_realtime)) 1345 if (expect_true (have_realtime))
1233 { 1346 {
1234 struct timespec ts; 1347 struct timespec ts;
1258 return ev_time (); 1371 return ev_time ();
1259} 1372}
1260 1373
1261#if EV_MULTIPLICITY 1374#if EV_MULTIPLICITY
1262ev_tstamp 1375ev_tstamp
1263ev_now (EV_P) 1376ev_now (EV_P) EV_THROW
1264{ 1377{
1265 return ev_rt_now; 1378 return ev_rt_now;
1266} 1379}
1267#endif 1380#endif
1268 1381
1269void 1382void
1270ev_sleep (ev_tstamp delay) 1383ev_sleep (ev_tstamp delay) EV_THROW
1271{ 1384{
1272 if (delay > 0.) 1385 if (delay > 0.)
1273 { 1386 {
1274#if EV_USE_NANOSLEEP 1387#if EV_USE_NANOSLEEP
1275 struct timespec ts; 1388 struct timespec ts;
1276 1389
1277 EV_TS_SET (ts, delay); 1390 EV_TS_SET (ts, delay);
1278 nanosleep (&ts, 0); 1391 nanosleep (&ts, 0);
1279#elif defined(_WIN32) 1392#elif defined _WIN32
1280 Sleep ((unsigned long)(delay * 1e3)); 1393 Sleep ((unsigned long)(delay * 1e3));
1281#else 1394#else
1282 struct timeval tv; 1395 struct timeval tv;
1283 1396
1284 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1397 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1303 1416
1304 do 1417 do
1305 ncur <<= 1; 1418 ncur <<= 1;
1306 while (cnt > ncur); 1419 while (cnt > ncur);
1307 1420
1308 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1421 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
1309 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1422 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1310 { 1423 {
1311 ncur *= elem; 1424 ncur *= elem;
1312 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1425 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
1313 ncur = ncur - sizeof (void *) * 4; 1426 ncur = ncur - sizeof (void *) * 4;
1356pendingcb (EV_P_ ev_prepare *w, int revents) 1469pendingcb (EV_P_ ev_prepare *w, int revents)
1357{ 1470{
1358} 1471}
1359 1472
1360void noinline 1473void noinline
1361ev_feed_event (EV_P_ void *w, int revents) 1474ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1362{ 1475{
1363 W w_ = (W)w; 1476 W w_ = (W)w;
1364 int pri = ABSPRI (w_); 1477 int pri = ABSPRI (w_);
1365 1478
1366 if (expect_false (w_->pending)) 1479 if (expect_false (w_->pending))
1370 w_->pending = ++pendingcnt [pri]; 1483 w_->pending = ++pendingcnt [pri];
1371 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1484 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1372 pendings [pri][w_->pending - 1].w = w_; 1485 pendings [pri][w_->pending - 1].w = w_;
1373 pendings [pri][w_->pending - 1].events = revents; 1486 pendings [pri][w_->pending - 1].events = revents;
1374 } 1487 }
1488
1489 pendingpri = NUMPRI - 1;
1375} 1490}
1376 1491
1377inline_speed void 1492inline_speed void
1378feed_reverse (EV_P_ W w) 1493feed_reverse (EV_P_ W w)
1379{ 1494{
1425 if (expect_true (!anfd->reify)) 1540 if (expect_true (!anfd->reify))
1426 fd_event_nocheck (EV_A_ fd, revents); 1541 fd_event_nocheck (EV_A_ fd, revents);
1427} 1542}
1428 1543
1429void 1544void
1430ev_feed_fd_event (EV_P_ int fd, int revents) 1545ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1431{ 1546{
1432 if (fd >= 0 && fd < anfdmax) 1547 if (fd >= 0 && fd < anfdmax)
1433 fd_event_nocheck (EV_A_ fd, revents); 1548 fd_event_nocheck (EV_A_ fd, revents);
1434} 1549}
1435 1550
1784} 1899}
1785 1900
1786inline_speed void 1901inline_speed void
1787evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1902evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1788{ 1903{
1904 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1905
1789 if (expect_true (*flag)) 1906 if (expect_true (*flag))
1790 return; 1907 return;
1791 1908
1792 *flag = 1; 1909 *flag = 1;
1793
1794 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ 1910 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1795 1911
1796 pipe_write_skipped = 1; 1912 pipe_write_skipped = 1;
1797 1913
1798 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */ 1914 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1799 1915
1800 if (pipe_write_wanted) 1916 if (pipe_write_wanted)
1801 { 1917 {
1802 int old_errno; 1918 int old_errno;
1803 1919
1804 pipe_write_skipped = 0; /* just an optimisation, no fence needed */ 1920 pipe_write_skipped = 0;
1921 ECB_MEMORY_FENCE_RELEASE;
1805 1922
1806 old_errno = errno; /* save errno because write will clobber it */ 1923 old_errno = errno; /* save errno because write will clobber it */
1807 1924
1808#if EV_USE_EVENTFD 1925#if EV_USE_EVENTFD
1809 if (evfd >= 0) 1926 if (evfd >= 0)
1812 write (evfd, &counter, sizeof (uint64_t)); 1929 write (evfd, &counter, sizeof (uint64_t));
1813 } 1930 }
1814 else 1931 else
1815#endif 1932#endif
1816 { 1933 {
1817 /* win32 people keep sending patches that change this write() to send() */ 1934#ifdef _WIN32
1818 /* and then run away. but send() is wrong, it wants a socket handle on win32 */ 1935 WSABUF buf;
1819 /* so when you think this write should be a send instead, please find out */ 1936 DWORD sent;
1820 /* where your send() is from - it's definitely not the microsoft send, and */ 1937 buf.buf = &buf;
1821 /* tell me. thank you. */ 1938 buf.len = 1;
1939 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1940#else
1822 write (evpipe [1], &(evpipe [1]), 1); 1941 write (evpipe [1], &(evpipe [1]), 1);
1942#endif
1823 } 1943 }
1824 1944
1825 errno = old_errno; 1945 errno = old_errno;
1826 } 1946 }
1827} 1947}
1842 read (evfd, &counter, sizeof (uint64_t)); 1962 read (evfd, &counter, sizeof (uint64_t));
1843 } 1963 }
1844 else 1964 else
1845#endif 1965#endif
1846 { 1966 {
1847 char dummy; 1967 char dummy[4];
1848 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 1968#ifdef _WIN32
1969 WSABUF buf;
1970 DWORD recvd;
1971 DWORD flags = 0;
1972 buf.buf = dummy;
1973 buf.len = sizeof (dummy);
1974 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1975#else
1849 read (evpipe [0], &dummy, 1); 1976 read (evpipe [0], &dummy, sizeof (dummy));
1977#endif
1850 } 1978 }
1851 } 1979 }
1852 1980
1853 pipe_write_skipped = 0; 1981 pipe_write_skipped = 0;
1982
1983 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1854 1984
1855#if EV_SIGNAL_ENABLE 1985#if EV_SIGNAL_ENABLE
1856 if (sig_pending) 1986 if (sig_pending)
1857 { 1987 {
1858 sig_pending = 0; 1988 sig_pending = 0;
1989
1990 ECB_MEMORY_FENCE;
1859 1991
1860 for (i = EV_NSIG - 1; i--; ) 1992 for (i = EV_NSIG - 1; i--; )
1861 if (expect_false (signals [i].pending)) 1993 if (expect_false (signals [i].pending))
1862 ev_feed_signal_event (EV_A_ i + 1); 1994 ev_feed_signal_event (EV_A_ i + 1);
1863 } 1995 }
1865 1997
1866#if EV_ASYNC_ENABLE 1998#if EV_ASYNC_ENABLE
1867 if (async_pending) 1999 if (async_pending)
1868 { 2000 {
1869 async_pending = 0; 2001 async_pending = 0;
2002
2003 ECB_MEMORY_FENCE;
1870 2004
1871 for (i = asynccnt; i--; ) 2005 for (i = asynccnt; i--; )
1872 if (asyncs [i]->sent) 2006 if (asyncs [i]->sent)
1873 { 2007 {
1874 asyncs [i]->sent = 0; 2008 asyncs [i]->sent = 0;
2009 ECB_MEMORY_FENCE_RELEASE;
1875 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2010 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1876 } 2011 }
1877 } 2012 }
1878#endif 2013#endif
1879} 2014}
1880 2015
1881/*****************************************************************************/ 2016/*****************************************************************************/
1882 2017
1883void 2018void
1884ev_feed_signal (int signum) 2019ev_feed_signal (int signum) EV_THROW
1885{ 2020{
1886#if EV_MULTIPLICITY 2021#if EV_MULTIPLICITY
1887 EV_P = signals [signum - 1].loop; 2022 EV_P = signals [signum - 1].loop;
1888 2023
1889 if (!EV_A) 2024 if (!EV_A)
1906 2041
1907 ev_feed_signal (signum); 2042 ev_feed_signal (signum);
1908} 2043}
1909 2044
1910void noinline 2045void noinline
1911ev_feed_signal_event (EV_P_ int signum) 2046ev_feed_signal_event (EV_P_ int signum) EV_THROW
1912{ 2047{
1913 WL w; 2048 WL w;
1914 2049
1915 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2050 if (expect_false (signum <= 0 || signum > EV_NSIG))
1916 return; 2051 return;
1924 if (expect_false (signals [signum].loop != EV_A)) 2059 if (expect_false (signals [signum].loop != EV_A))
1925 return; 2060 return;
1926#endif 2061#endif
1927 2062
1928 signals [signum].pending = 0; 2063 signals [signum].pending = 0;
2064 ECB_MEMORY_FENCE_RELEASE;
1929 2065
1930 for (w = signals [signum].head; w; w = w->next) 2066 for (w = signals [signum].head; w; w = w->next)
1931 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2067 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1932} 2068}
1933 2069
2032#if EV_USE_SELECT 2168#if EV_USE_SELECT
2033# include "ev_select.c" 2169# include "ev_select.c"
2034#endif 2170#endif
2035 2171
2036int ecb_cold 2172int ecb_cold
2037ev_version_major (void) 2173ev_version_major (void) EV_THROW
2038{ 2174{
2039 return EV_VERSION_MAJOR; 2175 return EV_VERSION_MAJOR;
2040} 2176}
2041 2177
2042int ecb_cold 2178int ecb_cold
2043ev_version_minor (void) 2179ev_version_minor (void) EV_THROW
2044{ 2180{
2045 return EV_VERSION_MINOR; 2181 return EV_VERSION_MINOR;
2046} 2182}
2047 2183
2048/* return true if we are running with elevated privileges and should ignore env variables */ 2184/* return true if we are running with elevated privileges and should ignore env variables */
2056 || getgid () != getegid (); 2192 || getgid () != getegid ();
2057#endif 2193#endif
2058} 2194}
2059 2195
2060unsigned int ecb_cold 2196unsigned int ecb_cold
2061ev_supported_backends (void) 2197ev_supported_backends (void) EV_THROW
2062{ 2198{
2063 unsigned int flags = 0; 2199 unsigned int flags = 0;
2064 2200
2065 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2201 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2066 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2202 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
2070 2206
2071 return flags; 2207 return flags;
2072} 2208}
2073 2209
2074unsigned int ecb_cold 2210unsigned int ecb_cold
2075ev_recommended_backends (void) 2211ev_recommended_backends (void) EV_THROW
2076{ 2212{
2077 unsigned int flags = ev_supported_backends (); 2213 unsigned int flags = ev_supported_backends ();
2078 2214
2079#ifndef __NetBSD__ 2215#ifndef __NetBSD__
2080 /* kqueue is borked on everything but netbsd apparently */ 2216 /* kqueue is borked on everything but netbsd apparently */
2092 2228
2093 return flags; 2229 return flags;
2094} 2230}
2095 2231
2096unsigned int ecb_cold 2232unsigned int ecb_cold
2097ev_embeddable_backends (void) 2233ev_embeddable_backends (void) EV_THROW
2098{ 2234{
2099 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2235 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2100 2236
2101 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2237 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2102 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2238 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2104 2240
2105 return flags; 2241 return flags;
2106} 2242}
2107 2243
2108unsigned int 2244unsigned int
2109ev_backend (EV_P) 2245ev_backend (EV_P) EV_THROW
2110{ 2246{
2111 return backend; 2247 return backend;
2112} 2248}
2113 2249
2114#if EV_FEATURE_API 2250#if EV_FEATURE_API
2115unsigned int 2251unsigned int
2116ev_iteration (EV_P) 2252ev_iteration (EV_P) EV_THROW
2117{ 2253{
2118 return loop_count; 2254 return loop_count;
2119} 2255}
2120 2256
2121unsigned int 2257unsigned int
2122ev_depth (EV_P) 2258ev_depth (EV_P) EV_THROW
2123{ 2259{
2124 return loop_depth; 2260 return loop_depth;
2125} 2261}
2126 2262
2127void 2263void
2128ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2264ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2129{ 2265{
2130 io_blocktime = interval; 2266 io_blocktime = interval;
2131} 2267}
2132 2268
2133void 2269void
2134ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2270ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2135{ 2271{
2136 timeout_blocktime = interval; 2272 timeout_blocktime = interval;
2137} 2273}
2138 2274
2139void 2275void
2140ev_set_userdata (EV_P_ void *data) 2276ev_set_userdata (EV_P_ void *data) EV_THROW
2141{ 2277{
2142 userdata = data; 2278 userdata = data;
2143} 2279}
2144 2280
2145void * 2281void *
2146ev_userdata (EV_P) 2282ev_userdata (EV_P) EV_THROW
2147{ 2283{
2148 return userdata; 2284 return userdata;
2149} 2285}
2150 2286
2151void 2287void
2152ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2288ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2153{ 2289{
2154 invoke_cb = invoke_pending_cb; 2290 invoke_cb = invoke_pending_cb;
2155} 2291}
2156 2292
2157void 2293void
2158ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2294ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2159{ 2295{
2160 release_cb = release; 2296 release_cb = release;
2161 acquire_cb = acquire; 2297 acquire_cb = acquire;
2162} 2298}
2163#endif 2299#endif
2164 2300
2165/* initialise a loop structure, must be zero-initialised */ 2301/* initialise a loop structure, must be zero-initialised */
2166static void noinline ecb_cold 2302static void noinline ecb_cold
2167loop_init (EV_P_ unsigned int flags) 2303loop_init (EV_P_ unsigned int flags) EV_THROW
2168{ 2304{
2169 if (!backend) 2305 if (!backend)
2170 { 2306 {
2171 origflags = flags; 2307 origflags = flags;
2172 2308
2277 EV_INVOKE_PENDING; 2413 EV_INVOKE_PENDING;
2278 } 2414 }
2279#endif 2415#endif
2280 2416
2281#if EV_CHILD_ENABLE 2417#if EV_CHILD_ENABLE
2282 if (ev_is_active (&childev)) 2418 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2283 { 2419 {
2284 ev_ref (EV_A); /* child watcher */ 2420 ev_ref (EV_A); /* child watcher */
2285 ev_signal_stop (EV_A_ &childev); 2421 ev_signal_stop (EV_A_ &childev);
2286 } 2422 }
2287#endif 2423#endif
2414 EV_WIN32_CLOSE_FD (evpipe [1]); 2550 EV_WIN32_CLOSE_FD (evpipe [1]);
2415 } 2551 }
2416 2552
2417#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2418 evpipe_init (EV_A); 2554 evpipe_init (EV_A);
2419 /* now iterate over everything, in case we missed something */ 2555 /* iterate over everything, in case we missed something before */
2420 pipecb (EV_A_ &pipe_w, EV_READ); 2556 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2421#endif 2557#endif
2422 } 2558 }
2423 2559
2424 postfork = 0; 2560 postfork = 0;
2425} 2561}
2426 2562
2427#if EV_MULTIPLICITY 2563#if EV_MULTIPLICITY
2428 2564
2429struct ev_loop * ecb_cold 2565struct ev_loop * ecb_cold
2430ev_loop_new (unsigned int flags) 2566ev_loop_new (unsigned int flags) EV_THROW
2431{ 2567{
2432 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2568 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2433 2569
2434 memset (EV_A, 0, sizeof (struct ev_loop)); 2570 memset (EV_A, 0, sizeof (struct ev_loop));
2435 loop_init (EV_A_ flags); 2571 loop_init (EV_A_ flags);
2479} 2615}
2480#endif 2616#endif
2481 2617
2482#if EV_FEATURE_API 2618#if EV_FEATURE_API
2483void ecb_cold 2619void ecb_cold
2484ev_verify (EV_P) 2620ev_verify (EV_P) EV_THROW
2485{ 2621{
2486#if EV_VERIFY 2622#if EV_VERIFY
2487 int i; 2623 int i;
2488 WL w; 2624 WL w, w2;
2489 2625
2490 assert (activecnt >= -1); 2626 assert (activecnt >= -1);
2491 2627
2492 assert (fdchangemax >= fdchangecnt); 2628 assert (fdchangemax >= fdchangecnt);
2493 for (i = 0; i < fdchangecnt; ++i) 2629 for (i = 0; i < fdchangecnt; ++i)
2494 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2630 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2495 2631
2496 assert (anfdmax >= 0); 2632 assert (anfdmax >= 0);
2497 for (i = 0; i < anfdmax; ++i) 2633 for (i = 0; i < anfdmax; ++i)
2634 {
2635 int j = 0;
2636
2498 for (w = anfds [i].head; w; w = w->next) 2637 for (w = w2 = anfds [i].head; w; w = w->next)
2499 { 2638 {
2500 verify_watcher (EV_A_ (W)w); 2639 verify_watcher (EV_A_ (W)w);
2640
2641 if (j++ & 1)
2642 {
2643 assert (("libev: io watcher list contains a loop", w != w2));
2644 w2 = w2->next;
2645 }
2646
2501 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2647 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2502 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2648 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2503 } 2649 }
2650 }
2504 2651
2505 assert (timermax >= timercnt); 2652 assert (timermax >= timercnt);
2506 verify_heap (EV_A_ timers, timercnt); 2653 verify_heap (EV_A_ timers, timercnt);
2507 2654
2508#if EV_PERIODIC_ENABLE 2655#if EV_PERIODIC_ENABLE
2558#if EV_MULTIPLICITY 2705#if EV_MULTIPLICITY
2559struct ev_loop * ecb_cold 2706struct ev_loop * ecb_cold
2560#else 2707#else
2561int 2708int
2562#endif 2709#endif
2563ev_default_loop (unsigned int flags) 2710ev_default_loop (unsigned int flags) EV_THROW
2564{ 2711{
2565 if (!ev_default_loop_ptr) 2712 if (!ev_default_loop_ptr)
2566 { 2713 {
2567#if EV_MULTIPLICITY 2714#if EV_MULTIPLICITY
2568 EV_P = ev_default_loop_ptr = &default_loop_struct; 2715 EV_P = ev_default_loop_ptr = &default_loop_struct;
2587 2734
2588 return ev_default_loop_ptr; 2735 return ev_default_loop_ptr;
2589} 2736}
2590 2737
2591void 2738void
2592ev_loop_fork (EV_P) 2739ev_loop_fork (EV_P) EV_THROW
2593{ 2740{
2594 postfork = 1; /* must be in line with ev_default_fork */ 2741 postfork = 1;
2595} 2742}
2596 2743
2597/*****************************************************************************/ 2744/*****************************************************************************/
2598 2745
2599void 2746void
2601{ 2748{
2602 EV_CB_INVOKE ((W)w, revents); 2749 EV_CB_INVOKE ((W)w, revents);
2603} 2750}
2604 2751
2605unsigned int 2752unsigned int
2606ev_pending_count (EV_P) 2753ev_pending_count (EV_P) EV_THROW
2607{ 2754{
2608 int pri; 2755 int pri;
2609 unsigned int count = 0; 2756 unsigned int count = 0;
2610 2757
2611 for (pri = NUMPRI; pri--; ) 2758 for (pri = NUMPRI; pri--; )
2615} 2762}
2616 2763
2617void noinline 2764void noinline
2618ev_invoke_pending (EV_P) 2765ev_invoke_pending (EV_P)
2619{ 2766{
2620 int pri; 2767 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
2621
2622 for (pri = NUMPRI; pri--; )
2623 while (pendingcnt [pri]) 2768 while (pendingcnt [pendingpri])
2624 { 2769 {
2625 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2770 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2626 2771
2627 p->w->pending = 0; 2772 p->w->pending = 0;
2628 EV_CB_INVOKE (p->w, p->events); 2773 EV_CB_INVOKE (p->w, p->events);
2629 EV_FREQUENT_CHECK; 2774 EV_FREQUENT_CHECK;
2630 } 2775 }
2725{ 2870{
2726 EV_FREQUENT_CHECK; 2871 EV_FREQUENT_CHECK;
2727 2872
2728 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2873 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2729 { 2874 {
2730 int feed_count = 0;
2731
2732 do 2875 do
2733 { 2876 {
2734 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2877 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2735 2878
2736 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2879 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2870 3013
2871 mn_now = ev_rt_now; 3014 mn_now = ev_rt_now;
2872 } 3015 }
2873} 3016}
2874 3017
2875void 3018int
2876ev_run (EV_P_ int flags) 3019ev_run (EV_P_ int flags)
2877{ 3020{
2878#if EV_FEATURE_API 3021#if EV_FEATURE_API
2879 ++loop_depth; 3022 ++loop_depth;
2880#endif 3023#endif
2993#endif 3136#endif
2994 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3137 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2995 backend_poll (EV_A_ waittime); 3138 backend_poll (EV_A_ waittime);
2996 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3139 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2997 3140
2998 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3141 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2999 3142
3143 ECB_MEMORY_FENCE_ACQUIRE;
3000 if (pipe_write_skipped) 3144 if (pipe_write_skipped)
3001 { 3145 {
3002 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3146 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3003 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3147 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3004 } 3148 }
3034 )); 3178 ));
3035 3179
3036 if (loop_done == EVBREAK_ONE) 3180 if (loop_done == EVBREAK_ONE)
3037 loop_done = EVBREAK_CANCEL; 3181 loop_done = EVBREAK_CANCEL;
3038 3182
3183 /* pendingpri is normally -1 here, which is not a good */
3184 /* value when returning to an ev_invoke_pending */
3185 pendingpri = NUMPRI - 1;
3186
3039#if EV_FEATURE_API 3187#if EV_FEATURE_API
3040 --loop_depth; 3188 --loop_depth;
3041#endif 3189#endif
3190
3191 return activecnt;
3042} 3192}
3043 3193
3044void 3194void
3045ev_break (EV_P_ int how) 3195ev_break (EV_P_ int how) EV_THROW
3046{ 3196{
3047 loop_done = how; 3197 loop_done = how;
3048} 3198}
3049 3199
3050void 3200void
3051ev_ref (EV_P) 3201ev_ref (EV_P) EV_THROW
3052{ 3202{
3053 ++activecnt; 3203 ++activecnt;
3054} 3204}
3055 3205
3056void 3206void
3057ev_unref (EV_P) 3207ev_unref (EV_P) EV_THROW
3058{ 3208{
3059 --activecnt; 3209 --activecnt;
3060} 3210}
3061 3211
3062void 3212void
3063ev_now_update (EV_P) 3213ev_now_update (EV_P) EV_THROW
3064{ 3214{
3065 time_update (EV_A_ 1e100); 3215 time_update (EV_A_ 1e100);
3066} 3216}
3067 3217
3068void 3218void
3069ev_suspend (EV_P) 3219ev_suspend (EV_P) EV_THROW
3070{ 3220{
3071 ev_now_update (EV_A); 3221 ev_now_update (EV_A);
3072} 3222}
3073 3223
3074void 3224void
3075ev_resume (EV_P) 3225ev_resume (EV_P) EV_THROW
3076{ 3226{
3077 ev_tstamp mn_prev = mn_now; 3227 ev_tstamp mn_prev = mn_now;
3078 3228
3079 ev_now_update (EV_A); 3229 ev_now_update (EV_A);
3080 timers_reschedule (EV_A_ mn_now - mn_prev); 3230 timers_reschedule (EV_A_ mn_now - mn_prev);
3119 w->pending = 0; 3269 w->pending = 0;
3120 } 3270 }
3121} 3271}
3122 3272
3123int 3273int
3124ev_clear_pending (EV_P_ void *w) 3274ev_clear_pending (EV_P_ void *w) EV_THROW
3125{ 3275{
3126 W w_ = (W)w; 3276 W w_ = (W)w;
3127 int pending = w_->pending; 3277 int pending = w_->pending;
3128 3278
3129 if (expect_true (pending)) 3279 if (expect_true (pending))
3162} 3312}
3163 3313
3164/*****************************************************************************/ 3314/*****************************************************************************/
3165 3315
3166void noinline 3316void noinline
3167ev_io_start (EV_P_ ev_io *w) 3317ev_io_start (EV_P_ ev_io *w) EV_THROW
3168{ 3318{
3169 int fd = w->fd; 3319 int fd = w->fd;
3170 3320
3171 if (expect_false (ev_is_active (w))) 3321 if (expect_false (ev_is_active (w)))
3172 return; 3322 return;
3178 3328
3179 ev_start (EV_A_ (W)w, 1); 3329 ev_start (EV_A_ (W)w, 1);
3180 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3330 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
3181 wlist_add (&anfds[fd].head, (WL)w); 3331 wlist_add (&anfds[fd].head, (WL)w);
3182 3332
3333 /* common bug, apparently */
3334 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3335
3183 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3336 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3184 w->events &= ~EV__IOFDSET; 3337 w->events &= ~EV__IOFDSET;
3185 3338
3186 EV_FREQUENT_CHECK; 3339 EV_FREQUENT_CHECK;
3187} 3340}
3188 3341
3189void noinline 3342void noinline
3190ev_io_stop (EV_P_ ev_io *w) 3343ev_io_stop (EV_P_ ev_io *w) EV_THROW
3191{ 3344{
3192 clear_pending (EV_A_ (W)w); 3345 clear_pending (EV_A_ (W)w);
3193 if (expect_false (!ev_is_active (w))) 3346 if (expect_false (!ev_is_active (w)))
3194 return; 3347 return;
3195 3348
3204 3357
3205 EV_FREQUENT_CHECK; 3358 EV_FREQUENT_CHECK;
3206} 3359}
3207 3360
3208void noinline 3361void noinline
3209ev_timer_start (EV_P_ ev_timer *w) 3362ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3210{ 3363{
3211 if (expect_false (ev_is_active (w))) 3364 if (expect_false (ev_is_active (w)))
3212 return; 3365 return;
3213 3366
3214 ev_at (w) += mn_now; 3367 ev_at (w) += mn_now;
3228 3381
3229 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3382 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3230} 3383}
3231 3384
3232void noinline 3385void noinline
3233ev_timer_stop (EV_P_ ev_timer *w) 3386ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3234{ 3387{
3235 clear_pending (EV_A_ (W)w); 3388 clear_pending (EV_A_ (W)w);
3236 if (expect_false (!ev_is_active (w))) 3389 if (expect_false (!ev_is_active (w)))
3237 return; 3390 return;
3238 3391
3258 3411
3259 EV_FREQUENT_CHECK; 3412 EV_FREQUENT_CHECK;
3260} 3413}
3261 3414
3262void noinline 3415void noinline
3263ev_timer_again (EV_P_ ev_timer *w) 3416ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3264{ 3417{
3265 EV_FREQUENT_CHECK; 3418 EV_FREQUENT_CHECK;
3419
3420 clear_pending (EV_A_ (W)w);
3266 3421
3267 if (ev_is_active (w)) 3422 if (ev_is_active (w))
3268 { 3423 {
3269 if (w->repeat) 3424 if (w->repeat)
3270 { 3425 {
3283 3438
3284 EV_FREQUENT_CHECK; 3439 EV_FREQUENT_CHECK;
3285} 3440}
3286 3441
3287ev_tstamp 3442ev_tstamp
3288ev_timer_remaining (EV_P_ ev_timer *w) 3443ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3289{ 3444{
3290 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3445 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3291} 3446}
3292 3447
3293#if EV_PERIODIC_ENABLE 3448#if EV_PERIODIC_ENABLE
3294void noinline 3449void noinline
3295ev_periodic_start (EV_P_ ev_periodic *w) 3450ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3296{ 3451{
3297 if (expect_false (ev_is_active (w))) 3452 if (expect_false (ev_is_active (w)))
3298 return; 3453 return;
3299 3454
3300 if (w->reschedule_cb) 3455 if (w->reschedule_cb)
3320 3475
3321 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3476 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3322} 3477}
3323 3478
3324void noinline 3479void noinline
3325ev_periodic_stop (EV_P_ ev_periodic *w) 3480ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3326{ 3481{
3327 clear_pending (EV_A_ (W)w); 3482 clear_pending (EV_A_ (W)w);
3328 if (expect_false (!ev_is_active (w))) 3483 if (expect_false (!ev_is_active (w)))
3329 return; 3484 return;
3330 3485
3348 3503
3349 EV_FREQUENT_CHECK; 3504 EV_FREQUENT_CHECK;
3350} 3505}
3351 3506
3352void noinline 3507void noinline
3353ev_periodic_again (EV_P_ ev_periodic *w) 3508ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3354{ 3509{
3355 /* TODO: use adjustheap and recalculation */ 3510 /* TODO: use adjustheap and recalculation */
3356 ev_periodic_stop (EV_A_ w); 3511 ev_periodic_stop (EV_A_ w);
3357 ev_periodic_start (EV_A_ w); 3512 ev_periodic_start (EV_A_ w);
3358} 3513}
3363#endif 3518#endif
3364 3519
3365#if EV_SIGNAL_ENABLE 3520#if EV_SIGNAL_ENABLE
3366 3521
3367void noinline 3522void noinline
3368ev_signal_start (EV_P_ ev_signal *w) 3523ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3369{ 3524{
3370 if (expect_false (ev_is_active (w))) 3525 if (expect_false (ev_is_active (w)))
3371 return; 3526 return;
3372 3527
3373 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3528 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3444 3599
3445 EV_FREQUENT_CHECK; 3600 EV_FREQUENT_CHECK;
3446} 3601}
3447 3602
3448void noinline 3603void noinline
3449ev_signal_stop (EV_P_ ev_signal *w) 3604ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3450{ 3605{
3451 clear_pending (EV_A_ (W)w); 3606 clear_pending (EV_A_ (W)w);
3452 if (expect_false (!ev_is_active (w))) 3607 if (expect_false (!ev_is_active (w)))
3453 return; 3608 return;
3454 3609
3485#endif 3640#endif
3486 3641
3487#if EV_CHILD_ENABLE 3642#if EV_CHILD_ENABLE
3488 3643
3489void 3644void
3490ev_child_start (EV_P_ ev_child *w) 3645ev_child_start (EV_P_ ev_child *w) EV_THROW
3491{ 3646{
3492#if EV_MULTIPLICITY 3647#if EV_MULTIPLICITY
3493 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3648 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3494#endif 3649#endif
3495 if (expect_false (ev_is_active (w))) 3650 if (expect_false (ev_is_active (w)))
3502 3657
3503 EV_FREQUENT_CHECK; 3658 EV_FREQUENT_CHECK;
3504} 3659}
3505 3660
3506void 3661void
3507ev_child_stop (EV_P_ ev_child *w) 3662ev_child_stop (EV_P_ ev_child *w) EV_THROW
3508{ 3663{
3509 clear_pending (EV_A_ (W)w); 3664 clear_pending (EV_A_ (W)w);
3510 if (expect_false (!ev_is_active (w))) 3665 if (expect_false (!ev_is_active (w)))
3511 return; 3666 return;
3512 3667
3679} 3834}
3680 3835
3681inline_size int 3836inline_size int
3682infy_newfd (void) 3837infy_newfd (void)
3683{ 3838{
3684#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3839#if defined IN_CLOEXEC && defined IN_NONBLOCK
3685 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3840 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3686 if (fd >= 0) 3841 if (fd >= 0)
3687 return fd; 3842 return fd;
3688#endif 3843#endif
3689 return inotify_init (); 3844 return inotify_init ();
3764#else 3919#else
3765# define EV_LSTAT(p,b) lstat (p, b) 3920# define EV_LSTAT(p,b) lstat (p, b)
3766#endif 3921#endif
3767 3922
3768void 3923void
3769ev_stat_stat (EV_P_ ev_stat *w) 3924ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3770{ 3925{
3771 if (lstat (w->path, &w->attr) < 0) 3926 if (lstat (w->path, &w->attr) < 0)
3772 w->attr.st_nlink = 0; 3927 w->attr.st_nlink = 0;
3773 else if (!w->attr.st_nlink) 3928 else if (!w->attr.st_nlink)
3774 w->attr.st_nlink = 1; 3929 w->attr.st_nlink = 1;
3813 ev_feed_event (EV_A_ w, EV_STAT); 3968 ev_feed_event (EV_A_ w, EV_STAT);
3814 } 3969 }
3815} 3970}
3816 3971
3817void 3972void
3818ev_stat_start (EV_P_ ev_stat *w) 3973ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3819{ 3974{
3820 if (expect_false (ev_is_active (w))) 3975 if (expect_false (ev_is_active (w)))
3821 return; 3976 return;
3822 3977
3823 ev_stat_stat (EV_A_ w); 3978 ev_stat_stat (EV_A_ w);
3844 3999
3845 EV_FREQUENT_CHECK; 4000 EV_FREQUENT_CHECK;
3846} 4001}
3847 4002
3848void 4003void
3849ev_stat_stop (EV_P_ ev_stat *w) 4004ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3850{ 4005{
3851 clear_pending (EV_A_ (W)w); 4006 clear_pending (EV_A_ (W)w);
3852 if (expect_false (!ev_is_active (w))) 4007 if (expect_false (!ev_is_active (w)))
3853 return; 4008 return;
3854 4009
3870} 4025}
3871#endif 4026#endif
3872 4027
3873#if EV_IDLE_ENABLE 4028#if EV_IDLE_ENABLE
3874void 4029void
3875ev_idle_start (EV_P_ ev_idle *w) 4030ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3876{ 4031{
3877 if (expect_false (ev_is_active (w))) 4032 if (expect_false (ev_is_active (w)))
3878 return; 4033 return;
3879 4034
3880 pri_adjust (EV_A_ (W)w); 4035 pri_adjust (EV_A_ (W)w);
3893 4048
3894 EV_FREQUENT_CHECK; 4049 EV_FREQUENT_CHECK;
3895} 4050}
3896 4051
3897void 4052void
3898ev_idle_stop (EV_P_ ev_idle *w) 4053ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3899{ 4054{
3900 clear_pending (EV_A_ (W)w); 4055 clear_pending (EV_A_ (W)w);
3901 if (expect_false (!ev_is_active (w))) 4056 if (expect_false (!ev_is_active (w)))
3902 return; 4057 return;
3903 4058
3917} 4072}
3918#endif 4073#endif
3919 4074
3920#if EV_PREPARE_ENABLE 4075#if EV_PREPARE_ENABLE
3921void 4076void
3922ev_prepare_start (EV_P_ ev_prepare *w) 4077ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3923{ 4078{
3924 if (expect_false (ev_is_active (w))) 4079 if (expect_false (ev_is_active (w)))
3925 return; 4080 return;
3926 4081
3927 EV_FREQUENT_CHECK; 4082 EV_FREQUENT_CHECK;
3932 4087
3933 EV_FREQUENT_CHECK; 4088 EV_FREQUENT_CHECK;
3934} 4089}
3935 4090
3936void 4091void
3937ev_prepare_stop (EV_P_ ev_prepare *w) 4092ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3938{ 4093{
3939 clear_pending (EV_A_ (W)w); 4094 clear_pending (EV_A_ (W)w);
3940 if (expect_false (!ev_is_active (w))) 4095 if (expect_false (!ev_is_active (w)))
3941 return; 4096 return;
3942 4097
3955} 4110}
3956#endif 4111#endif
3957 4112
3958#if EV_CHECK_ENABLE 4113#if EV_CHECK_ENABLE
3959void 4114void
3960ev_check_start (EV_P_ ev_check *w) 4115ev_check_start (EV_P_ ev_check *w) EV_THROW
3961{ 4116{
3962 if (expect_false (ev_is_active (w))) 4117 if (expect_false (ev_is_active (w)))
3963 return; 4118 return;
3964 4119
3965 EV_FREQUENT_CHECK; 4120 EV_FREQUENT_CHECK;
3970 4125
3971 EV_FREQUENT_CHECK; 4126 EV_FREQUENT_CHECK;
3972} 4127}
3973 4128
3974void 4129void
3975ev_check_stop (EV_P_ ev_check *w) 4130ev_check_stop (EV_P_ ev_check *w) EV_THROW
3976{ 4131{
3977 clear_pending (EV_A_ (W)w); 4132 clear_pending (EV_A_ (W)w);
3978 if (expect_false (!ev_is_active (w))) 4133 if (expect_false (!ev_is_active (w)))
3979 return; 4134 return;
3980 4135
3993} 4148}
3994#endif 4149#endif
3995 4150
3996#if EV_EMBED_ENABLE 4151#if EV_EMBED_ENABLE
3997void noinline 4152void noinline
3998ev_embed_sweep (EV_P_ ev_embed *w) 4153ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3999{ 4154{
4000 ev_run (w->other, EVRUN_NOWAIT); 4155 ev_run (w->other, EVRUN_NOWAIT);
4001} 4156}
4002 4157
4003static void 4158static void
4051 ev_idle_stop (EV_A_ idle); 4206 ev_idle_stop (EV_A_ idle);
4052} 4207}
4053#endif 4208#endif
4054 4209
4055void 4210void
4056ev_embed_start (EV_P_ ev_embed *w) 4211ev_embed_start (EV_P_ ev_embed *w) EV_THROW
4057{ 4212{
4058 if (expect_false (ev_is_active (w))) 4213 if (expect_false (ev_is_active (w)))
4059 return; 4214 return;
4060 4215
4061 { 4216 {
4082 4237
4083 EV_FREQUENT_CHECK; 4238 EV_FREQUENT_CHECK;
4084} 4239}
4085 4240
4086void 4241void
4087ev_embed_stop (EV_P_ ev_embed *w) 4242ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
4088{ 4243{
4089 clear_pending (EV_A_ (W)w); 4244 clear_pending (EV_A_ (W)w);
4090 if (expect_false (!ev_is_active (w))) 4245 if (expect_false (!ev_is_active (w)))
4091 return; 4246 return;
4092 4247
4102} 4257}
4103#endif 4258#endif
4104 4259
4105#if EV_FORK_ENABLE 4260#if EV_FORK_ENABLE
4106void 4261void
4107ev_fork_start (EV_P_ ev_fork *w) 4262ev_fork_start (EV_P_ ev_fork *w) EV_THROW
4108{ 4263{
4109 if (expect_false (ev_is_active (w))) 4264 if (expect_false (ev_is_active (w)))
4110 return; 4265 return;
4111 4266
4112 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
4117 4272
4118 EV_FREQUENT_CHECK; 4273 EV_FREQUENT_CHECK;
4119} 4274}
4120 4275
4121void 4276void
4122ev_fork_stop (EV_P_ ev_fork *w) 4277ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
4123{ 4278{
4124 clear_pending (EV_A_ (W)w); 4279 clear_pending (EV_A_ (W)w);
4125 if (expect_false (!ev_is_active (w))) 4280 if (expect_false (!ev_is_active (w)))
4126 return; 4281 return;
4127 4282
4140} 4295}
4141#endif 4296#endif
4142 4297
4143#if EV_CLEANUP_ENABLE 4298#if EV_CLEANUP_ENABLE
4144void 4299void
4145ev_cleanup_start (EV_P_ ev_cleanup *w) 4300ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4146{ 4301{
4147 if (expect_false (ev_is_active (w))) 4302 if (expect_false (ev_is_active (w)))
4148 return; 4303 return;
4149 4304
4150 EV_FREQUENT_CHECK; 4305 EV_FREQUENT_CHECK;
4157 ev_unref (EV_A); 4312 ev_unref (EV_A);
4158 EV_FREQUENT_CHECK; 4313 EV_FREQUENT_CHECK;
4159} 4314}
4160 4315
4161void 4316void
4162ev_cleanup_stop (EV_P_ ev_cleanup *w) 4317ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4163{ 4318{
4164 clear_pending (EV_A_ (W)w); 4319 clear_pending (EV_A_ (W)w);
4165 if (expect_false (!ev_is_active (w))) 4320 if (expect_false (!ev_is_active (w)))
4166 return; 4321 return;
4167 4322
4181} 4336}
4182#endif 4337#endif
4183 4338
4184#if EV_ASYNC_ENABLE 4339#if EV_ASYNC_ENABLE
4185void 4340void
4186ev_async_start (EV_P_ ev_async *w) 4341ev_async_start (EV_P_ ev_async *w) EV_THROW
4187{ 4342{
4188 if (expect_false (ev_is_active (w))) 4343 if (expect_false (ev_is_active (w)))
4189 return; 4344 return;
4190 4345
4191 w->sent = 0; 4346 w->sent = 0;
4200 4355
4201 EV_FREQUENT_CHECK; 4356 EV_FREQUENT_CHECK;
4202} 4357}
4203 4358
4204void 4359void
4205ev_async_stop (EV_P_ ev_async *w) 4360ev_async_stop (EV_P_ ev_async *w) EV_THROW
4206{ 4361{
4207 clear_pending (EV_A_ (W)w); 4362 clear_pending (EV_A_ (W)w);
4208 if (expect_false (!ev_is_active (w))) 4363 if (expect_false (!ev_is_active (w)))
4209 return; 4364 return;
4210 4365
4221 4376
4222 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
4223} 4378}
4224 4379
4225void 4380void
4226ev_async_send (EV_P_ ev_async *w) 4381ev_async_send (EV_P_ ev_async *w) EV_THROW
4227{ 4382{
4228 w->sent = 1; 4383 w->sent = 1;
4229 evpipe_write (EV_A_ &async_pending); 4384 evpipe_write (EV_A_ &async_pending);
4230} 4385}
4231#endif 4386#endif
4268 4423
4269 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4424 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4270} 4425}
4271 4426
4272void 4427void
4273ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4428ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
4274{ 4429{
4275 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4430 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4276 4431
4277 if (expect_false (!once)) 4432 if (expect_false (!once))
4278 { 4433 {
4300 4455
4301/*****************************************************************************/ 4456/*****************************************************************************/
4302 4457
4303#if EV_WALK_ENABLE 4458#if EV_WALK_ENABLE
4304void ecb_cold 4459void ecb_cold
4305ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4460ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4306{ 4461{
4307 int i, j; 4462 int i, j;
4308 ev_watcher_list *wl, *wn; 4463 ev_watcher_list *wl, *wn;
4309 4464
4310 if (types & (EV_IO | EV_EMBED)) 4465 if (types & (EV_IO | EV_EMBED))
4416 4571
4417#if EV_MULTIPLICITY 4572#if EV_MULTIPLICITY
4418 #include "ev_wrap.h" 4573 #include "ev_wrap.h"
4419#endif 4574#endif
4420 4575
4421EV_CPP(})
4422

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