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Comparing libev/ev.c (file contents):
Revision 1.373 by root, Sun Feb 20 02:56:23 2011 UTC vs.
Revision 1.391 by root, Thu Aug 4 13:57:16 2011 UTC

… …
464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
465 465
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
468 468
469/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ECB.H BEGIN */
471/*
472 * libecb - http://software.schmorp.de/pkg/libecb
473 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved.
477 *
478 * Redistribution and use in source and binary forms, with or without modifica-
479 * tion, are permitted provided that the following conditions are met:
480 *
481 * 1. Redistributions of source code must retain the above copyright notice,
482 * this list of conditions and the following disclaimer.
483 *
484 * 2. Redistributions in binary form must reproduce the above copyright
485 * notice, this list of conditions and the following disclaimer in the
486 * documentation and/or other materials provided with the distribution.
487 *
488 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
489 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
490 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
491 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
492 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
493 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
496 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
497 * OF THE POSSIBILITY OF SUCH DAMAGE.
498 */
499
500#ifndef ECB_H
501#define ECB_H
502
503#ifdef _WIN32
504 typedef signed char int8_t;
505 typedef unsigned char uint8_t;
506 typedef signed short int16_t;
507 typedef unsigned short uint16_t;
508 typedef signed int int32_t;
509 typedef unsigned int uint32_t;
469#if __GNUC__ >= 4 510 #if __GNUC__
470# define expect(expr,value) __builtin_expect ((expr),(value)) 511 typedef signed long long int64_t;
471# define noinline __attribute__ ((noinline)) 512 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t;
516 #endif
472#else 517#else
473# define expect(expr,value) (expr) 518 #include <inttypes.h>
474# define noinline
475# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
476# define inline
477# endif 519#endif
520
521/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so.
525 * 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.
527 */
528#ifndef ECB_GCC_VERSION
529 #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
531 #else
532 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
478#endif 533 #endif
534#endif
479 535
536/*****************************************************************************/
537
538/* 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 */
540
541#if ECB_NO_THREADS || ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0)
543 #define ECB_MEMORY_FENCE_ACQUIRE do { } while (0)
544 #define ECB_MEMORY_FENCE_RELEASE do { } while (0)
545#endif
546
547#ifndef ECB_MEMORY_FENCE
548 #if ECB_GCC_VERSION(2,5)
549 #if __x86
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
552 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
553 #elif __amd64
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
555 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
556 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
557 #endif
558 #endif
559#endif
560
561#ifndef ECB_MEMORY_FENCE
562 #if ECB_GCC_VERSION(4,4)
563 #define ECB_MEMORY_FENCE __sync_synchronize ()
564 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
565 #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
566 #elif _MSC_VER >= 1400 /* VC++ 2005 */
567 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
568 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
569 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
570 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
571 #elif defined(_WIN32)
572 #include <WinNT.h>
573 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
574 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
575 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
576 #endif
577#endif
578
579#ifndef ECB_MEMORY_FENCE
580 /*
581 * if you get undefined symbol references to pthread_mutex_lock,
582 * or failure to find pthread.h, then you should implement
583 * the ECB_MEMORY_FENCE operations for your cpu/compiler
584 * OR provide pthread.h and link against the posix thread library
585 * of your system.
586 */
587 #include <pthread.h>
588 #define ECB_NEEDS_PTHREADS 1
589 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
590
591 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
592 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
593 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
594 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
595#endif
596
597/*****************************************************************************/
598
599#define ECB_C99 (__STDC_VERSION__ >= 199901L)
600
601#if __cplusplus
602 #define ecb_inline static inline
603#elif ECB_GCC_VERSION(2,5)
604 #define ecb_inline static __inline__
605#elif ECB_C99
606 #define ecb_inline static inline
607#else
608 #define ecb_inline static
609#endif
610
611#if ECB_GCC_VERSION(3,3)
612 #define ecb_restrict __restrict__
613#elif ECB_C99
614 #define ecb_restrict restrict
615#else
616 #define ecb_restrict
617#endif
618
619typedef int ecb_bool;
620
621#define ECB_CONCAT_(a, b) a ## b
622#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
623#define ECB_STRINGIFY_(a) # a
624#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
625
626#define ecb_function_ ecb_inline
627
628#if ECB_GCC_VERSION(3,1)
629 #define ecb_attribute(attrlist) __attribute__(attrlist)
630 #define ecb_is_constant(expr) __builtin_constant_p (expr)
631 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
632 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
633#else
634 #define ecb_attribute(attrlist)
635 #define ecb_is_constant(expr) 0
636 #define ecb_expect(expr,value) (expr)
637 #define ecb_prefetch(addr,rw,locality)
638#endif
639
640/* no emulation for ecb_decltype */
641#if ECB_GCC_VERSION(4,5)
642 #define ecb_decltype(x) __decltype(x)
643#elif ECB_GCC_VERSION(3,0)
644 #define ecb_decltype(x) __typeof(x)
645#endif
646
647#define ecb_noinline ecb_attribute ((__noinline__))
648#define ecb_noreturn ecb_attribute ((__noreturn__))
649#define ecb_unused ecb_attribute ((__unused__))
650#define ecb_const ecb_attribute ((__const__))
651#define ecb_pure ecb_attribute ((__pure__))
652
653#if ECB_GCC_VERSION(4,3)
654 #define ecb_artificial ecb_attribute ((__artificial__))
655 #define ecb_hot ecb_attribute ((__hot__))
656 #define ecb_cold ecb_attribute ((__cold__))
657#else
658 #define ecb_artificial
659 #define ecb_hot
660 #define ecb_cold
661#endif
662
663/* put around conditional expressions if you are very sure that the */
664/* expression is mostly true or mostly false. note that these return */
665/* booleans, not the expression. */
480#define expect_false(expr) expect ((expr) != 0, 0) 666#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
481#define expect_true(expr) expect ((expr) != 0, 1) 667#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
668/* for compatibility to the rest of the world */
669#define ecb_likely(expr) ecb_expect_true (expr)
670#define ecb_unlikely(expr) ecb_expect_false (expr)
671
672/* count trailing zero bits and count # of one bits */
673#if ECB_GCC_VERSION(3,4)
674 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
675 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
676 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
677 #define ecb_ctz32(x) __builtin_ctz (x)
678 #define ecb_ctz64(x) __builtin_ctzll (x)
679 #define ecb_popcount32(x) __builtin_popcount (x)
680 /* no popcountll */
681#else
682 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
683 ecb_function_ int
684 ecb_ctz32 (uint32_t x)
685 {
686 int r = 0;
687
688 x &= ~x + 1; /* this isolates the lowest bit */
689
690#if ECB_branchless_on_i386
691 r += !!(x & 0xaaaaaaaa) << 0;
692 r += !!(x & 0xcccccccc) << 1;
693 r += !!(x & 0xf0f0f0f0) << 2;
694 r += !!(x & 0xff00ff00) << 3;
695 r += !!(x & 0xffff0000) << 4;
696#else
697 if (x & 0xaaaaaaaa) r += 1;
698 if (x & 0xcccccccc) r += 2;
699 if (x & 0xf0f0f0f0) r += 4;
700 if (x & 0xff00ff00) r += 8;
701 if (x & 0xffff0000) r += 16;
702#endif
703
704 return r;
705 }
706
707 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
708 ecb_function_ int
709 ecb_ctz64 (uint64_t x)
710 {
711 int shift = x & 0xffffffffU ? 0 : 32;
712 return ecb_ctz32 (x >> shift) + shift;
713 }
714
715 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
716 ecb_function_ int
717 ecb_popcount32 (uint32_t x)
718 {
719 x -= (x >> 1) & 0x55555555;
720 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
721 x = ((x >> 4) + x) & 0x0f0f0f0f;
722 x *= 0x01010101;
723
724 return x >> 24;
725 }
726
727 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
728 ecb_function_ int ecb_ld32 (uint32_t x)
729 {
730 int r = 0;
731
732 if (x >> 16) { x >>= 16; r += 16; }
733 if (x >> 8) { x >>= 8; r += 8; }
734 if (x >> 4) { x >>= 4; r += 4; }
735 if (x >> 2) { x >>= 2; r += 2; }
736 if (x >> 1) { r += 1; }
737
738 return r;
739 }
740
741 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
742 ecb_function_ int ecb_ld64 (uint64_t x)
743 {
744 int r = 0;
745
746 if (x >> 32) { x >>= 32; r += 32; }
747
748 return r + ecb_ld32 (x);
749 }
750#endif
751
752/* popcount64 is only available on 64 bit cpus as gcc builtin */
753/* so for this version we are lazy */
754ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
755ecb_function_ int
756ecb_popcount64 (uint64_t x)
757{
758 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
759}
760
761ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
762ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
763ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
764ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
765ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
766ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
767ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
768ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
769
770ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
771ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
772ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
773ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
774ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
775ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
776ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
777ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
778
779#if ECB_GCC_VERSION(4,3)
780 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
781 #define ecb_bswap32(x) __builtin_bswap32 (x)
782 #define ecb_bswap64(x) __builtin_bswap64 (x)
783#else
784 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
785 ecb_function_ uint16_t
786 ecb_bswap16 (uint16_t x)
787 {
788 return ecb_rotl16 (x, 8);
789 }
790
791 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
792 ecb_function_ uint32_t
793 ecb_bswap32 (uint32_t x)
794 {
795 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
796 }
797
798 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
799 ecb_function_ uint64_t
800 ecb_bswap64 (uint64_t x)
801 {
802 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
803 }
804#endif
805
806#if ECB_GCC_VERSION(4,5)
807 #define ecb_unreachable() __builtin_unreachable ()
808#else
809 /* this seems to work fine, but gcc always emits a warning for it :/ */
810 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
811 ecb_function_ void ecb_unreachable (void) { }
812#endif
813
814/* try to tell the compiler that some condition is definitely true */
815#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
816
817ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
818ecb_function_ unsigned char
819ecb_byteorder_helper (void)
820{
821 const uint32_t u = 0x11223344;
822 return *(unsigned char *)&u;
823}
824
825ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
826ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
827ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
828ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
829
830#if ECB_GCC_VERSION(3,0) || ECB_C99
831 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
832#else
833 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
834#endif
835
836#if ecb_cplusplus_does_not_suck
837 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
838 template<typename T, int N>
839 static inline int ecb_array_length (const T (&arr)[N])
840 {
841 return N;
842 }
843#else
844 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
845#endif
846
847#endif
848
849/* ECB.H END */
850
851#define expect_false(cond) ecb_expect_false (cond)
852#define expect_true(cond) ecb_expect_true (cond)
853#define noinline ecb_noinline
854
482#define inline_size static inline 855#define inline_size ecb_inline
483 856
484#if EV_FEATURE_CODE 857#if EV_FEATURE_CODE
485# define inline_speed static inline 858# define inline_speed ecb_inline
486#else 859#else
487# define inline_speed static noinline 860# define inline_speed static noinline
488#endif 861#endif
489 862
490#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 863#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
581 954
582#ifdef __linux 955#ifdef __linux
583# include <sys/utsname.h> 956# include <sys/utsname.h>
584#endif 957#endif
585 958
586static unsigned int noinline 959static unsigned int noinline ecb_cold
587ev_linux_version (void) 960ev_linux_version (void)
588{ 961{
589#ifdef __linux 962#ifdef __linux
590 unsigned int v = 0; 963 unsigned int v = 0;
591 struct utsname buf; 964 struct utsname buf;
… …
620} 993}
621 994
622/*****************************************************************************/ 995/*****************************************************************************/
623 996
624#if EV_AVOID_STDIO 997#if EV_AVOID_STDIO
625static void noinline 998static void noinline ecb_cold
626ev_printerr (const char *msg) 999ev_printerr (const char *msg)
627{ 1000{
628 write (STDERR_FILENO, msg, strlen (msg)); 1001 write (STDERR_FILENO, msg, strlen (msg));
629} 1002}
630#endif 1003#endif
631 1004
632static void (*syserr_cb)(const char *msg); 1005static void (*syserr_cb)(const char *msg);
633 1006
634void 1007void ecb_cold
635ev_set_syserr_cb (void (*cb)(const char *msg)) 1008ev_set_syserr_cb (void (*cb)(const char *msg))
636{ 1009{
637 syserr_cb = cb; 1010 syserr_cb = cb;
638} 1011}
639 1012
640static void noinline 1013static void noinline ecb_cold
641ev_syserr (const char *msg) 1014ev_syserr (const char *msg)
642{ 1015{
643 if (!msg) 1016 if (!msg)
644 msg = "(libev) system error"; 1017 msg = "(libev) system error";
645 1018
… …
678#endif 1051#endif
679} 1052}
680 1053
681static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1054static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
682 1055
683void 1056void ecb_cold
684ev_set_allocator (void *(*cb)(void *ptr, long size)) 1057ev_set_allocator (void *(*cb)(void *ptr, long size))
685{ 1058{
686 alloc = cb; 1059 alloc = cb;
687} 1060}
688 1061
… …
870 select (0, 0, 0, 0, &tv); 1243 select (0, 0, 0, 0, &tv);
871#endif 1244#endif
872 } 1245 }
873} 1246}
874 1247
875inline_speed int
876ev_timeout_to_ms (ev_tstamp timeout)
877{
878 int ms = timeout * 1000. + .999999;
879
880 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
881}
882
883/*****************************************************************************/ 1248/*****************************************************************************/
884 1249
885#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1250#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
886 1251
887/* find a suitable new size for the given array, */ 1252/* find a suitable new size for the given array, */
… …
905 } 1270 }
906 1271
907 return ncur; 1272 return ncur;
908} 1273}
909 1274
910static noinline void * 1275static void * noinline ecb_cold
911array_realloc (int elem, void *base, int *cur, int cnt) 1276array_realloc (int elem, void *base, int *cur, int cnt)
912{ 1277{
913 *cur = array_nextsize (elem, *cur, cnt); 1278 *cur = array_nextsize (elem, *cur, cnt);
914 return ev_realloc (base, elem * *cur); 1279 return ev_realloc (base, elem * *cur);
915} 1280}
… …
918 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1283 memset ((void *)(base), 0, sizeof (*(base)) * (count))
919 1284
920#define array_needsize(type,base,cur,cnt,init) \ 1285#define array_needsize(type,base,cur,cnt,init) \
921 if (expect_false ((cnt) > (cur))) \ 1286 if (expect_false ((cnt) > (cur))) \
922 { \ 1287 { \
923 int ocur_ = (cur); \ 1288 int ecb_unused ocur_ = (cur); \
924 (base) = (type *)array_realloc \ 1289 (base) = (type *)array_realloc \
925 (sizeof (type), (base), &(cur), (cnt)); \ 1290 (sizeof (type), (base), &(cur), (cnt)); \
926 init ((base) + (ocur_), (cur) - ocur_); \ 1291 init ((base) + (ocur_), (cur) - ocur_); \
927 } 1292 }
928 1293
… …
1034 for (i = 0; i < fdchangecnt; ++i) 1399 for (i = 0; i < fdchangecnt; ++i)
1035 { 1400 {
1036 int fd = fdchanges [i]; 1401 int fd = fdchanges [i];
1037 ANFD *anfd = anfds + fd; 1402 ANFD *anfd = anfds + fd;
1038 1403
1039 if (anfd->reify & EV__IOFDSET) 1404 if (anfd->reify & EV__IOFDSET && anfd->head)
1040 { 1405 {
1041 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); 1406 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1042 1407
1043 if (handle != anfd->handle) 1408 if (handle != anfd->handle)
1044 { 1409 {
… …
1098 fdchanges [fdchangecnt - 1] = fd; 1463 fdchanges [fdchangecnt - 1] = fd;
1099 } 1464 }
1100} 1465}
1101 1466
1102/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1467/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1103inline_speed void 1468inline_speed void ecb_cold
1104fd_kill (EV_P_ int fd) 1469fd_kill (EV_P_ int fd)
1105{ 1470{
1106 ev_io *w; 1471 ev_io *w;
1107 1472
1108 while ((w = (ev_io *)anfds [fd].head)) 1473 while ((w = (ev_io *)anfds [fd].head))
… …
1111 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1476 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1112 } 1477 }
1113} 1478}
1114 1479
1115/* check whether the given fd is actually valid, for error recovery */ 1480/* check whether the given fd is actually valid, for error recovery */
1116inline_size int 1481inline_size int ecb_cold
1117fd_valid (int fd) 1482fd_valid (int fd)
1118{ 1483{
1119#ifdef _WIN32 1484#ifdef _WIN32
1120 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1485 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1121#else 1486#else
1122 return fcntl (fd, F_GETFD) != -1; 1487 return fcntl (fd, F_GETFD) != -1;
1123#endif 1488#endif
1124} 1489}
1125 1490
1126/* called on EBADF to verify fds */ 1491/* called on EBADF to verify fds */
1127static void noinline 1492static void noinline ecb_cold
1128fd_ebadf (EV_P) 1493fd_ebadf (EV_P)
1129{ 1494{
1130 int fd; 1495 int fd;
1131 1496
1132 for (fd = 0; fd < anfdmax; ++fd) 1497 for (fd = 0; fd < anfdmax; ++fd)
… …
1134 if (!fd_valid (fd) && errno == EBADF) 1499 if (!fd_valid (fd) && errno == EBADF)
1135 fd_kill (EV_A_ fd); 1500 fd_kill (EV_A_ fd);
1136} 1501}
1137 1502
1138/* called on ENOMEM in select/poll to kill some fds and retry */ 1503/* called on ENOMEM in select/poll to kill some fds and retry */
1139static void noinline 1504static void noinline ecb_cold
1140fd_enomem (EV_P) 1505fd_enomem (EV_P)
1141{ 1506{
1142 int fd; 1507 int fd;
1143 1508
1144 for (fd = anfdmax; fd--; ) 1509 for (fd = anfdmax; fd--; )
… …
1339 1704
1340/*****************************************************************************/ 1705/*****************************************************************************/
1341 1706
1342#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1707#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1343 1708
1344static void noinline 1709static void noinline ecb_cold
1345evpipe_init (EV_P) 1710evpipe_init (EV_P)
1346{ 1711{
1347 if (!ev_is_active (&pipe_w)) 1712 if (!ev_is_active (&pipe_w))
1348 { 1713 {
1349# if EV_USE_EVENTFD 1714# if EV_USE_EVENTFD
… …
1371 ev_io_start (EV_A_ &pipe_w); 1736 ev_io_start (EV_A_ &pipe_w);
1372 ev_unref (EV_A); /* watcher should not keep loop alive */ 1737 ev_unref (EV_A); /* watcher should not keep loop alive */
1373 } 1738 }
1374} 1739}
1375 1740
1376inline_size void 1741inline_speed void
1377evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1742evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1378{ 1743{
1379 if (!*flag) 1744 if (expect_true (*flag))
1745 return;
1746
1747 *flag = 1;
1748
1749 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1750
1751 pipe_write_skipped = 1;
1752
1753 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1754
1755 if (pipe_write_wanted)
1380 { 1756 {
1757 int old_errno;
1758
1759 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1760
1381 int old_errno = errno; /* save errno because write might clobber it */ 1761 old_errno = errno; /* save errno because write will clobber it */
1382 char dummy;
1383
1384 *flag = 1;
1385 1762
1386#if EV_USE_EVENTFD 1763#if EV_USE_EVENTFD
1387 if (evfd >= 0) 1764 if (evfd >= 0)
1388 { 1765 {
1389 uint64_t counter = 1; 1766 uint64_t counter = 1;
1390 write (evfd, &counter, sizeof (uint64_t)); 1767 write (evfd, &counter, sizeof (uint64_t));
1391 } 1768 }
1392 else 1769 else
1393#endif 1770#endif
1771 {
1394 /* win32 people keep sending patches that change this write() to send() */ 1772 /* win32 people keep sending patches that change this write() to send() */
1395 /* and then run away. but send() is wrong, it wants a socket handle on win32 */ 1773 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1396 /* so when you think this write should be a send instead, please find out */ 1774 /* so when you think this write should be a send instead, please find out */
1397 /* where your send() is from - it's definitely not the microsoft send, and */ 1775 /* where your send() is from - it's definitely not the microsoft send, and */
1398 /* tell me. thank you. */ 1776 /* tell me. thank you. */
1399 write (evpipe [1], &dummy, 1); 1777 write (evpipe [1], &(evpipe [1]), 1);
1778 }
1400 1779
1401 errno = old_errno; 1780 errno = old_errno;
1402 } 1781 }
1403} 1782}
1404 1783
… …
1407static void 1786static void
1408pipecb (EV_P_ ev_io *iow, int revents) 1787pipecb (EV_P_ ev_io *iow, int revents)
1409{ 1788{
1410 int i; 1789 int i;
1411 1790
1791 if (revents & EV_READ)
1792 {
1412#if EV_USE_EVENTFD 1793#if EV_USE_EVENTFD
1413 if (evfd >= 0) 1794 if (evfd >= 0)
1414 { 1795 {
1415 uint64_t counter; 1796 uint64_t counter;
1416 read (evfd, &counter, sizeof (uint64_t)); 1797 read (evfd, &counter, sizeof (uint64_t));
1417 } 1798 }
1418 else 1799 else
1419#endif 1800#endif
1420 { 1801 {
1421 char dummy; 1802 char dummy;
1422 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 1803 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1423 read (evpipe [0], &dummy, 1); 1804 read (evpipe [0], &dummy, 1);
1805 }
1424 } 1806 }
1807
1808 pipe_write_skipped = 0;
1425 1809
1426#if EV_SIGNAL_ENABLE 1810#if EV_SIGNAL_ENABLE
1427 if (sig_pending) 1811 if (sig_pending)
1428 { 1812 {
1429 sig_pending = 0; 1813 sig_pending = 0;
… …
1458 EV_P = signals [signum - 1].loop; 1842 EV_P = signals [signum - 1].loop;
1459 1843
1460 if (!EV_A) 1844 if (!EV_A)
1461 return; 1845 return;
1462#endif 1846#endif
1847
1848 if (!ev_active (&pipe_w))
1849 return;
1463 1850
1464 signals [signum - 1].pending = 1; 1851 signals [signum - 1].pending = 1;
1465 evpipe_write (EV_A_ &sig_pending); 1852 evpipe_write (EV_A_ &sig_pending);
1466} 1853}
1467 1854
… …
1599#endif 1986#endif
1600#if EV_USE_SELECT 1987#if EV_USE_SELECT
1601# include "ev_select.c" 1988# include "ev_select.c"
1602#endif 1989#endif
1603 1990
1604int 1991int ecb_cold
1605ev_version_major (void) 1992ev_version_major (void)
1606{ 1993{
1607 return EV_VERSION_MAJOR; 1994 return EV_VERSION_MAJOR;
1608} 1995}
1609 1996
1610int 1997int ecb_cold
1611ev_version_minor (void) 1998ev_version_minor (void)
1612{ 1999{
1613 return EV_VERSION_MINOR; 2000 return EV_VERSION_MINOR;
1614} 2001}
1615 2002
1616/* return true if we are running with elevated privileges and should ignore env variables */ 2003/* return true if we are running with elevated privileges and should ignore env variables */
1617int inline_size 2004int inline_size ecb_cold
1618enable_secure (void) 2005enable_secure (void)
1619{ 2006{
1620#ifdef _WIN32 2007#ifdef _WIN32
1621 return 0; 2008 return 0;
1622#else 2009#else
1623 return getuid () != geteuid () 2010 return getuid () != geteuid ()
1624 || getgid () != getegid (); 2011 || getgid () != getegid ();
1625#endif 2012#endif
1626} 2013}
1627 2014
1628unsigned int 2015unsigned int ecb_cold
1629ev_supported_backends (void) 2016ev_supported_backends (void)
1630{ 2017{
1631 unsigned int flags = 0; 2018 unsigned int flags = 0;
1632 2019
1633 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2020 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1637 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2024 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1638 2025
1639 return flags; 2026 return flags;
1640} 2027}
1641 2028
1642unsigned int 2029unsigned int ecb_cold
1643ev_recommended_backends (void) 2030ev_recommended_backends (void)
1644{ 2031{
1645 unsigned int flags = ev_supported_backends (); 2032 unsigned int flags = ev_supported_backends ();
1646 2033
1647#ifndef __NetBSD__ 2034#ifndef __NetBSD__
… …
1659#endif 2046#endif
1660 2047
1661 return flags; 2048 return flags;
1662} 2049}
1663 2050
1664unsigned int 2051unsigned int ecb_cold
1665ev_embeddable_backends (void) 2052ev_embeddable_backends (void)
1666{ 2053{
1667 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2054 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1668 2055
1669 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2056 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
… …
1714ev_userdata (EV_P) 2101ev_userdata (EV_P)
1715{ 2102{
1716 return userdata; 2103 return userdata;
1717} 2104}
1718 2105
2106void
1719void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2107ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1720{ 2108{
1721 invoke_cb = invoke_pending_cb; 2109 invoke_cb = invoke_pending_cb;
1722} 2110}
1723 2111
2112void
1724void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2113ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1725{ 2114{
1726 release_cb = release; 2115 release_cb = release;
1727 acquire_cb = acquire; 2116 acquire_cb = acquire;
1728} 2117}
1729#endif 2118#endif
1730 2119
1731/* initialise a loop structure, must be zero-initialised */ 2120/* initialise a loop structure, must be zero-initialised */
1732static void noinline 2121static void noinline ecb_cold
1733loop_init (EV_P_ unsigned int flags) 2122loop_init (EV_P_ unsigned int flags)
1734{ 2123{
1735 if (!backend) 2124 if (!backend)
1736 { 2125 {
1737 origflags = flags; 2126 origflags = flags;
… …
1765 if (!(flags & EVFLAG_NOENV) 2154 if (!(flags & EVFLAG_NOENV)
1766 && !enable_secure () 2155 && !enable_secure ()
1767 && getenv ("LIBEV_FLAGS")) 2156 && getenv ("LIBEV_FLAGS"))
1768 flags = atoi (getenv ("LIBEV_FLAGS")); 2157 flags = atoi (getenv ("LIBEV_FLAGS"));
1769 2158
1770 ev_rt_now = ev_time (); 2159 ev_rt_now = ev_time ();
1771 mn_now = get_clock (); 2160 mn_now = get_clock ();
1772 now_floor = mn_now; 2161 now_floor = mn_now;
1773 rtmn_diff = ev_rt_now - mn_now; 2162 rtmn_diff = ev_rt_now - mn_now;
1774#if EV_FEATURE_API 2163#if EV_FEATURE_API
1775 invoke_cb = ev_invoke_pending; 2164 invoke_cb = ev_invoke_pending;
1776#endif 2165#endif
1777 2166
1778 io_blocktime = 0.; 2167 io_blocktime = 0.;
1779 timeout_blocktime = 0.; 2168 timeout_blocktime = 0.;
1780 backend = 0; 2169 backend = 0;
1781 backend_fd = -1; 2170 backend_fd = -1;
1782 sig_pending = 0; 2171 sig_pending = 0;
1783#if EV_ASYNC_ENABLE 2172#if EV_ASYNC_ENABLE
1784 async_pending = 0; 2173 async_pending = 0;
1785#endif 2174#endif
2175 pipe_write_skipped = 0;
2176 pipe_write_wanted = 0;
1786#if EV_USE_INOTIFY 2177#if EV_USE_INOTIFY
1787 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2178 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1788#endif 2179#endif
1789#if EV_USE_SIGNALFD 2180#if EV_USE_SIGNALFD
1790 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2181 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1791#endif 2182#endif
1792 2183
1793 if (!(flags & EVBACKEND_MASK)) 2184 if (!(flags & EVBACKEND_MASK))
1794 flags |= ev_recommended_backends (); 2185 flags |= ev_recommended_backends ();
1795 2186
… …
1820#endif 2211#endif
1821 } 2212 }
1822} 2213}
1823 2214
1824/* free up a loop structure */ 2215/* free up a loop structure */
1825void 2216void ecb_cold
1826ev_loop_destroy (EV_P) 2217ev_loop_destroy (EV_P)
1827{ 2218{
1828 int i; 2219 int i;
1829 2220
1830#if EV_MULTIPLICITY 2221#if EV_MULTIPLICITY
… …
1960 infy_fork (EV_A); 2351 infy_fork (EV_A);
1961#endif 2352#endif
1962 2353
1963 if (ev_is_active (&pipe_w)) 2354 if (ev_is_active (&pipe_w))
1964 { 2355 {
1965 /* this "locks" the handlers against writing to the pipe */ 2356 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1966 /* while we modify the fd vars */
1967 sig_pending = 1;
1968#if EV_ASYNC_ENABLE
1969 async_pending = 1;
1970#endif
1971 2357
1972 ev_ref (EV_A); 2358 ev_ref (EV_A);
1973 ev_io_stop (EV_A_ &pipe_w); 2359 ev_io_stop (EV_A_ &pipe_w);
1974 2360
1975#if EV_USE_EVENTFD 2361#if EV_USE_EVENTFD
… …
1993 postfork = 0; 2379 postfork = 0;
1994} 2380}
1995 2381
1996#if EV_MULTIPLICITY 2382#if EV_MULTIPLICITY
1997 2383
1998struct ev_loop * 2384struct ev_loop * ecb_cold
1999ev_loop_new (unsigned int flags) 2385ev_loop_new (unsigned int flags)
2000{ 2386{
2001 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2387 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2002 2388
2003 memset (EV_A, 0, sizeof (struct ev_loop)); 2389 memset (EV_A, 0, sizeof (struct ev_loop));
… …
2011} 2397}
2012 2398
2013#endif /* multiplicity */ 2399#endif /* multiplicity */
2014 2400
2015#if EV_VERIFY 2401#if EV_VERIFY
2016static void noinline 2402static void noinline ecb_cold
2017verify_watcher (EV_P_ W w) 2403verify_watcher (EV_P_ W w)
2018{ 2404{
2019 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2405 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2020 2406
2021 if (w->pending) 2407 if (w->pending)
2022 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2408 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2023} 2409}
2024 2410
2025static void noinline 2411static void noinline ecb_cold
2026verify_heap (EV_P_ ANHE *heap, int N) 2412verify_heap (EV_P_ ANHE *heap, int N)
2027{ 2413{
2028 int i; 2414 int i;
2029 2415
2030 for (i = HEAP0; i < N + HEAP0; ++i) 2416 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2035 2421
2036 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2422 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2037 } 2423 }
2038} 2424}
2039 2425
2040static void noinline 2426static void noinline ecb_cold
2041array_verify (EV_P_ W *ws, int cnt) 2427array_verify (EV_P_ W *ws, int cnt)
2042{ 2428{
2043 while (cnt--) 2429 while (cnt--)
2044 { 2430 {
2045 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2431 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2047 } 2433 }
2048} 2434}
2049#endif 2435#endif
2050 2436
2051#if EV_FEATURE_API 2437#if EV_FEATURE_API
2052void 2438void ecb_cold
2053ev_verify (EV_P) 2439ev_verify (EV_P)
2054{ 2440{
2055#if EV_VERIFY 2441#if EV_VERIFY
2056 int i; 2442 int i;
2057 WL w; 2443 WL w;
… …
2123#endif 2509#endif
2124} 2510}
2125#endif 2511#endif
2126 2512
2127#if EV_MULTIPLICITY 2513#if EV_MULTIPLICITY
2128struct ev_loop * 2514struct ev_loop * ecb_cold
2129#else 2515#else
2130int 2516int
2131#endif 2517#endif
2132ev_default_loop (unsigned int flags) 2518ev_default_loop (unsigned int flags)
2133{ 2519{
… …
2332 } 2718 }
2333} 2719}
2334 2720
2335/* simply recalculate all periodics */ 2721/* simply recalculate all periodics */
2336/* TODO: maybe ensure that at least one event happens when jumping forward? */ 2722/* TODO: maybe ensure that at least one event happens when jumping forward? */
2337static void noinline 2723static void noinline ecb_cold
2338periodics_reschedule (EV_P) 2724periodics_reschedule (EV_P)
2339{ 2725{
2340 int i; 2726 int i;
2341 2727
2342 /* adjust periodics after time jump */ 2728 /* adjust periodics after time jump */
… …
2355 reheap (periodics, periodiccnt); 2741 reheap (periodics, periodiccnt);
2356} 2742}
2357#endif 2743#endif
2358 2744
2359/* adjust all timers by a given offset */ 2745/* adjust all timers by a given offset */
2360static void noinline 2746static void noinline ecb_cold
2361timers_reschedule (EV_P_ ev_tstamp adjust) 2747timers_reschedule (EV_P_ ev_tstamp adjust)
2362{ 2748{
2363 int i; 2749 int i;
2364 2750
2365 for (i = 0; i < timercnt; ++i) 2751 for (i = 0; i < timercnt; ++i)
… …
2507 ev_tstamp prev_mn_now = mn_now; 2893 ev_tstamp prev_mn_now = mn_now;
2508 2894
2509 /* update time to cancel out callback processing overhead */ 2895 /* update time to cancel out callback processing overhead */
2510 time_update (EV_A_ 1e100); 2896 time_update (EV_A_ 1e100);
2511 2897
2898 /* from now on, we want a pipe-wake-up */
2899 pipe_write_wanted = 1;
2900
2901 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2902
2512 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 2903 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2513 { 2904 {
2514 waittime = MAX_BLOCKTIME; 2905 waittime = MAX_BLOCKTIME;
2515 2906
2516 if (timercnt) 2907 if (timercnt)
2517 { 2908 {
2518 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2909 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2519 if (waittime > to) waittime = to; 2910 if (waittime > to) waittime = to;
2520 } 2911 }
2521 2912
2522#if EV_PERIODIC_ENABLE 2913#if EV_PERIODIC_ENABLE
2523 if (periodiccnt) 2914 if (periodiccnt)
2524 { 2915 {
2525 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2916 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2526 if (waittime > to) waittime = to; 2917 if (waittime > to) waittime = to;
2527 } 2918 }
2528#endif 2919#endif
2529 2920
2530 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2921 /* don't let timeouts decrease the waittime below timeout_blocktime */
2531 if (expect_false (waittime < timeout_blocktime)) 2922 if (expect_false (waittime < timeout_blocktime))
2532 waittime = timeout_blocktime; 2923 waittime = timeout_blocktime;
2924
2925 /* at this point, we NEED to wait, so we have to ensure */
2926 /* to pass a minimum nonzero value to the backend */
2927 if (expect_false (waittime < backend_mintime))
2928 waittime = backend_mintime;
2533 2929
2534 /* extra check because io_blocktime is commonly 0 */ 2930 /* extra check because io_blocktime is commonly 0 */
2535 if (expect_false (io_blocktime)) 2931 if (expect_false (io_blocktime))
2536 { 2932 {
2537 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2933 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2538 2934
2539 if (sleeptime > waittime - backend_fudge) 2935 if (sleeptime > waittime - backend_mintime)
2540 sleeptime = waittime - backend_fudge; 2936 sleeptime = waittime - backend_mintime;
2541 2937
2542 if (expect_true (sleeptime > 0.)) 2938 if (expect_true (sleeptime > 0.))
2543 { 2939 {
2544 ev_sleep (sleeptime); 2940 ev_sleep (sleeptime);
2545 waittime -= sleeptime; 2941 waittime -= sleeptime;
… …
2551 ++loop_count; 2947 ++loop_count;
2552#endif 2948#endif
2553 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 2949 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2554 backend_poll (EV_A_ waittime); 2950 backend_poll (EV_A_ waittime);
2555 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 2951 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2952
2953 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2954
2955 if (pipe_write_skipped)
2956 {
2957 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2958 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2959 }
2960
2556 2961
2557 /* update ev_rt_now, do magic */ 2962 /* update ev_rt_now, do magic */
2558 time_update (EV_A_ waittime + sleeptime); 2963 time_update (EV_A_ waittime + sleeptime);
2559 } 2964 }
2560 2965
… …
3214 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3619 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3215 ofs += sizeof (struct inotify_event) + ev->len; 3620 ofs += sizeof (struct inotify_event) + ev->len;
3216 } 3621 }
3217} 3622}
3218 3623
3219inline_size void 3624inline_size void ecb_cold
3220ev_check_2625 (EV_P) 3625ev_check_2625 (EV_P)
3221{ 3626{
3222 /* kernels < 2.6.25 are borked 3627 /* kernels < 2.6.25 are borked
3223 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3628 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3224 */ 3629 */
… …
3849} 4254}
3850 4255
3851/*****************************************************************************/ 4256/*****************************************************************************/
3852 4257
3853#if EV_WALK_ENABLE 4258#if EV_WALK_ENABLE
3854void 4259void ecb_cold
3855ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4260ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3856{ 4261{
3857 int i, j; 4262 int i, j;
3858 ev_watcher_list *wl, *wn; 4263 ev_watcher_list *wl, *wn;
3859 4264
… …
3903 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4308 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3904#endif 4309#endif
3905 4310
3906#if EV_IDLE_ENABLE 4311#if EV_IDLE_ENABLE
3907 if (types & EV_IDLE) 4312 if (types & EV_IDLE)
3908 for (j = NUMPRI; i--; ) 4313 for (j = NUMPRI; j--; )
3909 for (i = idlecnt [j]; i--; ) 4314 for (i = idlecnt [j]; i--; )
3910 cb (EV_A_ EV_IDLE, idles [j][i]); 4315 cb (EV_A_ EV_IDLE, idles [j][i]);
3911#endif 4316#endif
3912 4317
3913#if EV_FORK_ENABLE 4318#if EV_FORK_ENABLE

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