… | |
… | |
4 | * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010,2011 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 | * |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
11 | * this list of conditions and the following disclaimer. |
11 | * this list of conditions and the following disclaimer. |
12 | * |
12 | * |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
14 | * notice, this list of conditions and the following disclaimer in the |
14 | * notice, this list of conditions and the following disclaimer in the |
15 | * documentation and/or other materials provided with the distribution. |
15 | * documentation and/or other materials provided with the distribution. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
… | |
… | |
42 | # ifdef EV_CONFIG_H |
42 | # ifdef EV_CONFIG_H |
43 | # include EV_CONFIG_H |
43 | # include EV_CONFIG_H |
44 | # else |
44 | # else |
45 | # include "config.h" |
45 | # include "config.h" |
46 | # endif |
46 | # endif |
|
|
47 | |
|
|
48 | #if HAVE_FLOOR |
|
|
49 | # ifndef EV_USE_FLOOR |
|
|
50 | # define EV_USE_FLOOR 1 |
|
|
51 | # endif |
|
|
52 | #endif |
47 | |
53 | |
48 | # if HAVE_CLOCK_SYSCALL |
54 | # if HAVE_CLOCK_SYSCALL |
49 | # ifndef EV_USE_CLOCK_SYSCALL |
55 | # ifndef EV_USE_CLOCK_SYSCALL |
50 | # define EV_USE_CLOCK_SYSCALL 1 |
56 | # define EV_USE_CLOCK_SYSCALL 1 |
51 | # ifndef EV_USE_REALTIME |
57 | # ifndef EV_USE_REALTIME |
… | |
… | |
156 | # define EV_USE_EVENTFD 0 |
162 | # define EV_USE_EVENTFD 0 |
157 | # endif |
163 | # endif |
158 | |
164 | |
159 | #endif |
165 | #endif |
160 | |
166 | |
161 | #include <math.h> |
|
|
162 | #include <stdlib.h> |
167 | #include <stdlib.h> |
163 | #include <string.h> |
168 | #include <string.h> |
164 | #include <fcntl.h> |
169 | #include <fcntl.h> |
165 | #include <stddef.h> |
170 | #include <stddef.h> |
166 | |
171 | |
… | |
… | |
178 | # include EV_H |
183 | # include EV_H |
179 | #else |
184 | #else |
180 | # include "ev.h" |
185 | # include "ev.h" |
181 | #endif |
186 | #endif |
182 | |
187 | |
183 | EV_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 |
184 | |
198 | |
185 | #ifndef _WIN32 |
199 | #ifndef _WIN32 |
186 | # include <sys/time.h> |
200 | # include <sys/time.h> |
187 | # include <sys/wait.h> |
201 | # include <sys/wait.h> |
188 | # include <unistd.h> |
202 | # include <unistd.h> |
… | |
… | |
232 | /* to make it compile regardless, just remove the above line, */ |
246 | /* to make it compile regardless, just remove the above line, */ |
233 | /* but consider reporting it, too! :) */ |
247 | /* but consider reporting it, too! :) */ |
234 | # define EV_NSIG 65 |
248 | # define EV_NSIG 65 |
235 | #endif |
249 | #endif |
236 | |
250 | |
|
|
251 | #ifndef EV_USE_FLOOR |
|
|
252 | # define EV_USE_FLOOR 0 |
|
|
253 | #endif |
|
|
254 | |
237 | #ifndef EV_USE_CLOCK_SYSCALL |
255 | #ifndef EV_USE_CLOCK_SYSCALL |
238 | # if __linux && __GLIBC__ >= 2 |
256 | # if __linux && __GLIBC__ >= 2 |
239 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
257 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
240 | # else |
258 | # else |
241 | # define EV_USE_CLOCK_SYSCALL 0 |
259 | # define EV_USE_CLOCK_SYSCALL 0 |
… | |
… | |
443 | #else |
461 | #else |
444 | # define EV_FREQUENT_CHECK do { } while (0) |
462 | # define EV_FREQUENT_CHECK do { } while (0) |
445 | #endif |
463 | #endif |
446 | |
464 | |
447 | /* |
465 | /* |
448 | * This is used to avoid floating point rounding problems. |
466 | * This is used to work around floating point rounding problems. |
449 | * It is added to ev_rt_now when scheduling periodics |
|
|
450 | * to ensure progress, time-wise, even when rounding |
|
|
451 | * errors are against us. |
|
|
452 | * This value is good at least till the year 4000. |
467 | * This value is good at least till the year 4000. |
453 | * Better solutions welcome. |
|
|
454 | */ |
468 | */ |
455 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
469 | #define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ |
|
|
470 | /*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ |
456 | |
471 | |
457 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
472 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
458 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
473 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
459 | |
474 | |
460 | #define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
475 | #define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
461 | #define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
476 | #define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
462 | |
477 | |
|
|
478 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
|
|
479 | /* ECB.H BEGIN */ |
|
|
480 | /* |
|
|
481 | * libecb - http://software.schmorp.de/pkg/libecb |
|
|
482 | * |
|
|
483 | * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> |
|
|
484 | * Copyright (©) 2011 Emanuele Giaquinta |
|
|
485 | * All rights reserved. |
|
|
486 | * |
|
|
487 | * Redistribution and use in source and binary forms, with or without modifica- |
|
|
488 | * tion, are permitted provided that the following conditions are met: |
|
|
489 | * |
|
|
490 | * 1. Redistributions of source code must retain the above copyright notice, |
|
|
491 | * this list of conditions and the following disclaimer. |
|
|
492 | * |
|
|
493 | * 2. Redistributions in binary form must reproduce the above copyright |
|
|
494 | * notice, this list of conditions and the following disclaimer in the |
|
|
495 | * documentation and/or other materials provided with the distribution. |
|
|
496 | * |
|
|
497 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
|
|
498 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
|
|
499 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
|
|
500 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
|
|
501 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
|
|
502 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
|
|
503 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
|
|
504 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
|
|
505 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
|
|
506 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
|
|
507 | */ |
|
|
508 | |
|
|
509 | #ifndef ECB_H |
|
|
510 | #define ECB_H |
|
|
511 | |
|
|
512 | #ifdef _WIN32 |
|
|
513 | typedef signed char int8_t; |
|
|
514 | typedef unsigned char uint8_t; |
|
|
515 | typedef signed short int16_t; |
|
|
516 | typedef unsigned short uint16_t; |
|
|
517 | typedef signed int int32_t; |
|
|
518 | typedef unsigned int uint32_t; |
463 | #if __GNUC__ >= 4 |
519 | #if __GNUC__ |
464 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
520 | typedef signed long long int64_t; |
465 | # define noinline __attribute__ ((noinline)) |
521 | typedef unsigned long long uint64_t; |
|
|
522 | #else /* _MSC_VER || __BORLANDC__ */ |
|
|
523 | typedef signed __int64 int64_t; |
|
|
524 | typedef unsigned __int64 uint64_t; |
|
|
525 | #endif |
466 | #else |
526 | #else |
467 | # define expect(expr,value) (expr) |
527 | #include <inttypes.h> |
468 | # define noinline |
|
|
469 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
|
|
470 | # define inline |
|
|
471 | # endif |
528 | #endif |
|
|
529 | |
|
|
530 | /* many compilers define _GNUC_ to some versions but then only implement |
|
|
531 | * what their idiot authors think are the "more important" extensions, |
|
|
532 | * causing enormous grief in return for some better fake benchmark numbers. |
|
|
533 | * or so. |
|
|
534 | * we try to detect these and simply assume they are not gcc - if they have |
|
|
535 | * an issue with that they should have done it right in the first place. |
|
|
536 | */ |
|
|
537 | #ifndef ECB_GCC_VERSION |
|
|
538 | #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) |
|
|
539 | #define ECB_GCC_VERSION(major,minor) 0 |
|
|
540 | #else |
|
|
541 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
472 | #endif |
542 | #endif |
|
|
543 | #endif |
473 | |
544 | |
|
|
545 | /*****************************************************************************/ |
|
|
546 | |
|
|
547 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
|
|
548 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
|
|
549 | |
|
|
550 | #if ECB_NO_THREADS |
|
|
551 | # define ECB_NO_SMP 1 |
|
|
552 | #endif |
|
|
553 | |
|
|
554 | #if ECB_NO_THREADS || ECB_NO_SMP |
|
|
555 | #define ECB_MEMORY_FENCE do { } while (0) |
|
|
556 | #endif |
|
|
557 | |
|
|
558 | #ifndef ECB_MEMORY_FENCE |
|
|
559 | #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
|
|
560 | #if __i386 || __i386__ |
|
|
561 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
|
|
562 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ |
|
|
563 | #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ |
|
|
564 | #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ |
|
|
565 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
|
|
566 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") |
|
|
567 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ |
|
|
568 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
|
|
569 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
|
|
570 | #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ |
|
|
571 | || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) |
|
|
572 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
|
|
573 | #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ |
|
|
574 | || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) |
|
|
575 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
|
|
576 | #elif __sparc || __sparc__ |
|
|
577 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") |
|
|
578 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
|
|
579 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
|
|
580 | #elif defined(__s390__) || defined(__s390x__) |
|
|
581 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
|
|
582 | #endif |
|
|
583 | #endif |
|
|
584 | #endif |
|
|
585 | |
|
|
586 | #ifndef ECB_MEMORY_FENCE |
|
|
587 | #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) |
|
|
588 | #define ECB_MEMORY_FENCE __sync_synchronize () |
|
|
589 | /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ |
|
|
590 | /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ |
|
|
591 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
|
|
592 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
593 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
|
|
594 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
595 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
|
|
596 | #elif defined(_WIN32) |
|
|
597 | #include <WinNT.h> |
|
|
598 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
|
|
599 | #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
|
|
600 | #include <mbarrier.h> |
|
|
601 | #define ECB_MEMORY_FENCE __machine_rw_barrier () |
|
|
602 | #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () |
|
|
603 | #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () |
|
|
604 | #endif |
|
|
605 | #endif |
|
|
606 | |
|
|
607 | #ifndef ECB_MEMORY_FENCE |
|
|
608 | #if !ECB_AVOID_PTHREADS |
|
|
609 | /* |
|
|
610 | * if you get undefined symbol references to pthread_mutex_lock, |
|
|
611 | * or failure to find pthread.h, then you should implement |
|
|
612 | * the ECB_MEMORY_FENCE operations for your cpu/compiler |
|
|
613 | * OR provide pthread.h and link against the posix thread library |
|
|
614 | * of your system. |
|
|
615 | */ |
|
|
616 | #include <pthread.h> |
|
|
617 | #define ECB_NEEDS_PTHREADS 1 |
|
|
618 | #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1 |
|
|
619 | |
|
|
620 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
|
|
621 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
|
|
622 | #endif |
|
|
623 | #endif |
|
|
624 | |
|
|
625 | #if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) |
|
|
626 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
627 | #endif |
|
|
628 | |
|
|
629 | #if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) |
|
|
630 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
631 | #endif |
|
|
632 | |
|
|
633 | /*****************************************************************************/ |
|
|
634 | |
|
|
635 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
|
|
636 | |
|
|
637 | #if __cplusplus |
|
|
638 | #define ecb_inline static inline |
|
|
639 | #elif ECB_GCC_VERSION(2,5) |
|
|
640 | #define ecb_inline static __inline__ |
|
|
641 | #elif ECB_C99 |
|
|
642 | #define ecb_inline static inline |
|
|
643 | #else |
|
|
644 | #define ecb_inline static |
|
|
645 | #endif |
|
|
646 | |
|
|
647 | #if ECB_GCC_VERSION(3,3) |
|
|
648 | #define ecb_restrict __restrict__ |
|
|
649 | #elif ECB_C99 |
|
|
650 | #define ecb_restrict restrict |
|
|
651 | #else |
|
|
652 | #define ecb_restrict |
|
|
653 | #endif |
|
|
654 | |
|
|
655 | typedef int ecb_bool; |
|
|
656 | |
|
|
657 | #define ECB_CONCAT_(a, b) a ## b |
|
|
658 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
|
|
659 | #define ECB_STRINGIFY_(a) # a |
|
|
660 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
|
|
661 | |
|
|
662 | #define ecb_function_ ecb_inline |
|
|
663 | |
|
|
664 | #if ECB_GCC_VERSION(3,1) |
|
|
665 | #define ecb_attribute(attrlist) __attribute__(attrlist) |
|
|
666 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
|
|
667 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
|
|
668 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
|
|
669 | #else |
|
|
670 | #define ecb_attribute(attrlist) |
|
|
671 | #define ecb_is_constant(expr) 0 |
|
|
672 | #define ecb_expect(expr,value) (expr) |
|
|
673 | #define ecb_prefetch(addr,rw,locality) |
|
|
674 | #endif |
|
|
675 | |
|
|
676 | /* no emulation for ecb_decltype */ |
|
|
677 | #if ECB_GCC_VERSION(4,5) |
|
|
678 | #define ecb_decltype(x) __decltype(x) |
|
|
679 | #elif ECB_GCC_VERSION(3,0) |
|
|
680 | #define ecb_decltype(x) __typeof(x) |
|
|
681 | #endif |
|
|
682 | |
|
|
683 | #define ecb_noinline ecb_attribute ((__noinline__)) |
|
|
684 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
|
|
685 | #define ecb_unused ecb_attribute ((__unused__)) |
|
|
686 | #define ecb_const ecb_attribute ((__const__)) |
|
|
687 | #define ecb_pure ecb_attribute ((__pure__)) |
|
|
688 | |
|
|
689 | #if ECB_GCC_VERSION(4,3) |
|
|
690 | #define ecb_artificial ecb_attribute ((__artificial__)) |
|
|
691 | #define ecb_hot ecb_attribute ((__hot__)) |
|
|
692 | #define ecb_cold ecb_attribute ((__cold__)) |
|
|
693 | #else |
|
|
694 | #define ecb_artificial |
|
|
695 | #define ecb_hot |
|
|
696 | #define ecb_cold |
|
|
697 | #endif |
|
|
698 | |
|
|
699 | /* put around conditional expressions if you are very sure that the */ |
|
|
700 | /* expression is mostly true or mostly false. note that these return */ |
|
|
701 | /* booleans, not the expression. */ |
474 | #define expect_false(expr) expect ((expr) != 0, 0) |
702 | #define ecb_expect_false(expr) ecb_expect (!!(expr), 0) |
475 | #define expect_true(expr) expect ((expr) != 0, 1) |
703 | #define ecb_expect_true(expr) ecb_expect (!!(expr), 1) |
|
|
704 | /* for compatibility to the rest of the world */ |
|
|
705 | #define ecb_likely(expr) ecb_expect_true (expr) |
|
|
706 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
|
|
707 | |
|
|
708 | /* count trailing zero bits and count # of one bits */ |
|
|
709 | #if ECB_GCC_VERSION(3,4) |
|
|
710 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
|
|
711 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
|
|
712 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
|
|
713 | #define ecb_ctz32(x) __builtin_ctz (x) |
|
|
714 | #define ecb_ctz64(x) __builtin_ctzll (x) |
|
|
715 | #define ecb_popcount32(x) __builtin_popcount (x) |
|
|
716 | /* no popcountll */ |
|
|
717 | #else |
|
|
718 | ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; |
|
|
719 | ecb_function_ int |
|
|
720 | ecb_ctz32 (uint32_t x) |
|
|
721 | { |
|
|
722 | int r = 0; |
|
|
723 | |
|
|
724 | x &= ~x + 1; /* this isolates the lowest bit */ |
|
|
725 | |
|
|
726 | #if ECB_branchless_on_i386 |
|
|
727 | r += !!(x & 0xaaaaaaaa) << 0; |
|
|
728 | r += !!(x & 0xcccccccc) << 1; |
|
|
729 | r += !!(x & 0xf0f0f0f0) << 2; |
|
|
730 | r += !!(x & 0xff00ff00) << 3; |
|
|
731 | r += !!(x & 0xffff0000) << 4; |
|
|
732 | #else |
|
|
733 | if (x & 0xaaaaaaaa) r += 1; |
|
|
734 | if (x & 0xcccccccc) r += 2; |
|
|
735 | if (x & 0xf0f0f0f0) r += 4; |
|
|
736 | if (x & 0xff00ff00) r += 8; |
|
|
737 | if (x & 0xffff0000) r += 16; |
|
|
738 | #endif |
|
|
739 | |
|
|
740 | return r; |
|
|
741 | } |
|
|
742 | |
|
|
743 | ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; |
|
|
744 | ecb_function_ int |
|
|
745 | ecb_ctz64 (uint64_t x) |
|
|
746 | { |
|
|
747 | int shift = x & 0xffffffffU ? 0 : 32; |
|
|
748 | return ecb_ctz32 (x >> shift) + shift; |
|
|
749 | } |
|
|
750 | |
|
|
751 | ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; |
|
|
752 | ecb_function_ int |
|
|
753 | ecb_popcount32 (uint32_t x) |
|
|
754 | { |
|
|
755 | x -= (x >> 1) & 0x55555555; |
|
|
756 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
|
|
757 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
|
|
758 | x *= 0x01010101; |
|
|
759 | |
|
|
760 | return x >> 24; |
|
|
761 | } |
|
|
762 | |
|
|
763 | ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; |
|
|
764 | ecb_function_ int ecb_ld32 (uint32_t x) |
|
|
765 | { |
|
|
766 | int r = 0; |
|
|
767 | |
|
|
768 | if (x >> 16) { x >>= 16; r += 16; } |
|
|
769 | if (x >> 8) { x >>= 8; r += 8; } |
|
|
770 | if (x >> 4) { x >>= 4; r += 4; } |
|
|
771 | if (x >> 2) { x >>= 2; r += 2; } |
|
|
772 | if (x >> 1) { r += 1; } |
|
|
773 | |
|
|
774 | return r; |
|
|
775 | } |
|
|
776 | |
|
|
777 | ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; |
|
|
778 | ecb_function_ int ecb_ld64 (uint64_t x) |
|
|
779 | { |
|
|
780 | int r = 0; |
|
|
781 | |
|
|
782 | if (x >> 32) { x >>= 32; r += 32; } |
|
|
783 | |
|
|
784 | return r + ecb_ld32 (x); |
|
|
785 | } |
|
|
786 | #endif |
|
|
787 | |
|
|
788 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; |
|
|
789 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) |
|
|
790 | { |
|
|
791 | return ( (x * 0x0802U & 0x22110U) |
|
|
792 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
|
|
793 | } |
|
|
794 | |
|
|
795 | ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; |
|
|
796 | ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) |
|
|
797 | { |
|
|
798 | x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
|
|
799 | x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
|
|
800 | x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
|
|
801 | x = ( x >> 8 ) | ( x << 8); |
|
|
802 | |
|
|
803 | return x; |
|
|
804 | } |
|
|
805 | |
|
|
806 | ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; |
|
|
807 | ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) |
|
|
808 | { |
|
|
809 | x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
|
|
810 | x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
|
|
811 | x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
|
|
812 | x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
|
|
813 | x = ( x >> 16 ) | ( x << 16); |
|
|
814 | |
|
|
815 | return x; |
|
|
816 | } |
|
|
817 | |
|
|
818 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
|
|
819 | /* so for this version we are lazy */ |
|
|
820 | ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; |
|
|
821 | ecb_function_ int |
|
|
822 | ecb_popcount64 (uint64_t x) |
|
|
823 | { |
|
|
824 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
|
|
825 | } |
|
|
826 | |
|
|
827 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; |
|
|
828 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; |
|
|
829 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; |
|
|
830 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; |
|
|
831 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; |
|
|
832 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; |
|
|
833 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; |
|
|
834 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; |
|
|
835 | |
|
|
836 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
|
|
837 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
|
|
838 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
|
|
839 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
|
|
840 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
|
|
841 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
|
|
842 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
|
|
843 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
|
|
844 | |
|
|
845 | #if ECB_GCC_VERSION(4,3) |
|
|
846 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
|
|
847 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
|
|
848 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
|
|
849 | #else |
|
|
850 | ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; |
|
|
851 | ecb_function_ uint16_t |
|
|
852 | ecb_bswap16 (uint16_t x) |
|
|
853 | { |
|
|
854 | return ecb_rotl16 (x, 8); |
|
|
855 | } |
|
|
856 | |
|
|
857 | ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; |
|
|
858 | ecb_function_ uint32_t |
|
|
859 | ecb_bswap32 (uint32_t x) |
|
|
860 | { |
|
|
861 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
|
|
862 | } |
|
|
863 | |
|
|
864 | ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; |
|
|
865 | ecb_function_ uint64_t |
|
|
866 | ecb_bswap64 (uint64_t x) |
|
|
867 | { |
|
|
868 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
|
|
869 | } |
|
|
870 | #endif |
|
|
871 | |
|
|
872 | #if ECB_GCC_VERSION(4,5) |
|
|
873 | #define ecb_unreachable() __builtin_unreachable () |
|
|
874 | #else |
|
|
875 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
|
|
876 | ecb_inline void ecb_unreachable (void) ecb_noreturn; |
|
|
877 | ecb_inline void ecb_unreachable (void) { } |
|
|
878 | #endif |
|
|
879 | |
|
|
880 | /* try to tell the compiler that some condition is definitely true */ |
|
|
881 | #define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) |
|
|
882 | |
|
|
883 | ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; |
|
|
884 | ecb_inline unsigned char |
|
|
885 | ecb_byteorder_helper (void) |
|
|
886 | { |
|
|
887 | const uint32_t u = 0x11223344; |
|
|
888 | return *(unsigned char *)&u; |
|
|
889 | } |
|
|
890 | |
|
|
891 | ecb_inline ecb_bool ecb_big_endian (void) ecb_const; |
|
|
892 | ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
|
|
893 | ecb_inline ecb_bool ecb_little_endian (void) ecb_const; |
|
|
894 | ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } |
|
|
895 | |
|
|
896 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
|
|
897 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
|
|
898 | #else |
|
|
899 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
|
|
900 | #endif |
|
|
901 | |
|
|
902 | #if __cplusplus |
|
|
903 | template<typename T> |
|
|
904 | static inline T ecb_div_rd (T val, T div) |
|
|
905 | { |
|
|
906 | return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
|
|
907 | } |
|
|
908 | template<typename T> |
|
|
909 | static inline T ecb_div_ru (T val, T div) |
|
|
910 | { |
|
|
911 | return val < 0 ? - ((-val ) / div) : (val + div - 1) / div; |
|
|
912 | } |
|
|
913 | #else |
|
|
914 | #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div)) |
|
|
915 | #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div)) |
|
|
916 | #endif |
|
|
917 | |
|
|
918 | #if ecb_cplusplus_does_not_suck |
|
|
919 | /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ |
|
|
920 | template<typename T, int N> |
|
|
921 | static inline int ecb_array_length (const T (&arr)[N]) |
|
|
922 | { |
|
|
923 | return N; |
|
|
924 | } |
|
|
925 | #else |
|
|
926 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
|
|
927 | #endif |
|
|
928 | |
|
|
929 | #endif |
|
|
930 | |
|
|
931 | /* ECB.H END */ |
|
|
932 | |
|
|
933 | #if ECB_MEMORY_FENCE_NEEDS_PTHREADS |
|
|
934 | /* if your architecture doesn't need memory fences, e.g. because it is |
|
|
935 | * single-cpu/core, or if you use libev in a project that doesn't use libev |
|
|
936 | * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling |
|
|
937 | * libev, in which cases the memory fences become nops. |
|
|
938 | * alternatively, you can remove this #error and link against libpthread, |
|
|
939 | * which will then provide the memory fences. |
|
|
940 | */ |
|
|
941 | # error "memory fences not defined for your architecture, please report" |
|
|
942 | #endif |
|
|
943 | |
|
|
944 | #ifndef ECB_MEMORY_FENCE |
|
|
945 | # define ECB_MEMORY_FENCE do { } while (0) |
|
|
946 | # define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
947 | # define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
948 | #endif |
|
|
949 | |
|
|
950 | #define expect_false(cond) ecb_expect_false (cond) |
|
|
951 | #define expect_true(cond) ecb_expect_true (cond) |
|
|
952 | #define noinline ecb_noinline |
|
|
953 | |
476 | #define inline_size static inline |
954 | #define inline_size ecb_inline |
477 | |
955 | |
478 | #if EV_FEATURE_CODE |
956 | #if EV_FEATURE_CODE |
479 | # define inline_speed static inline |
957 | # define inline_speed ecb_inline |
480 | #else |
958 | #else |
481 | # define inline_speed static noinline |
959 | # define inline_speed static noinline |
482 | #endif |
960 | #endif |
483 | |
961 | |
484 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
962 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
… | |
… | |
523 | # include "ev_win32.c" |
1001 | # include "ev_win32.c" |
524 | #endif |
1002 | #endif |
525 | |
1003 | |
526 | /*****************************************************************************/ |
1004 | /*****************************************************************************/ |
527 | |
1005 | |
|
|
1006 | /* define a suitable floor function (only used by periodics atm) */ |
|
|
1007 | |
|
|
1008 | #if EV_USE_FLOOR |
|
|
1009 | # include <math.h> |
|
|
1010 | # define ev_floor(v) floor (v) |
|
|
1011 | #else |
|
|
1012 | |
|
|
1013 | #include <float.h> |
|
|
1014 | |
|
|
1015 | /* a floor() replacement function, should be independent of ev_tstamp type */ |
|
|
1016 | static ev_tstamp noinline |
|
|
1017 | ev_floor (ev_tstamp v) |
|
|
1018 | { |
|
|
1019 | /* the choice of shift factor is not terribly important */ |
|
|
1020 | #if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ |
|
|
1021 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
|
|
1022 | #else |
|
|
1023 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
|
|
1024 | #endif |
|
|
1025 | |
|
|
1026 | /* argument too large for an unsigned long? */ |
|
|
1027 | if (expect_false (v >= shift)) |
|
|
1028 | { |
|
|
1029 | ev_tstamp f; |
|
|
1030 | |
|
|
1031 | if (v == v - 1.) |
|
|
1032 | return v; /* very large number */ |
|
|
1033 | |
|
|
1034 | f = shift * ev_floor (v * (1. / shift)); |
|
|
1035 | return f + ev_floor (v - f); |
|
|
1036 | } |
|
|
1037 | |
|
|
1038 | /* special treatment for negative args? */ |
|
|
1039 | if (expect_false (v < 0.)) |
|
|
1040 | { |
|
|
1041 | ev_tstamp f = -ev_floor (-v); |
|
|
1042 | |
|
|
1043 | return f - (f == v ? 0 : 1); |
|
|
1044 | } |
|
|
1045 | |
|
|
1046 | /* fits into an unsigned long */ |
|
|
1047 | return (unsigned long)v; |
|
|
1048 | } |
|
|
1049 | |
|
|
1050 | #endif |
|
|
1051 | |
|
|
1052 | /*****************************************************************************/ |
|
|
1053 | |
528 | #ifdef __linux |
1054 | #ifdef __linux |
529 | # include <sys/utsname.h> |
1055 | # include <sys/utsname.h> |
530 | #endif |
1056 | #endif |
531 | |
1057 | |
532 | static unsigned int noinline |
1058 | static unsigned int noinline ecb_cold |
533 | ev_linux_version (void) |
1059 | ev_linux_version (void) |
534 | { |
1060 | { |
535 | #ifdef __linux |
1061 | #ifdef __linux |
536 | unsigned int v = 0; |
1062 | unsigned int v = 0; |
537 | struct utsname buf; |
1063 | struct utsname buf; |
… | |
… | |
566 | } |
1092 | } |
567 | |
1093 | |
568 | /*****************************************************************************/ |
1094 | /*****************************************************************************/ |
569 | |
1095 | |
570 | #if EV_AVOID_STDIO |
1096 | #if EV_AVOID_STDIO |
571 | static void noinline |
1097 | static void noinline ecb_cold |
572 | ev_printerr (const char *msg) |
1098 | ev_printerr (const char *msg) |
573 | { |
1099 | { |
574 | write (STDERR_FILENO, msg, strlen (msg)); |
1100 | write (STDERR_FILENO, msg, strlen (msg)); |
575 | } |
1101 | } |
576 | #endif |
1102 | #endif |
577 | |
1103 | |
578 | static void (*syserr_cb)(const char *msg); |
1104 | static void (*syserr_cb)(const char *msg); |
579 | |
1105 | |
580 | void |
1106 | void ecb_cold |
581 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
1107 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
582 | { |
1108 | { |
583 | syserr_cb = cb; |
1109 | syserr_cb = cb; |
584 | } |
1110 | } |
585 | |
1111 | |
586 | static void noinline |
1112 | static void noinline ecb_cold |
587 | ev_syserr (const char *msg) |
1113 | ev_syserr (const char *msg) |
588 | { |
1114 | { |
589 | if (!msg) |
1115 | if (!msg) |
590 | msg = "(libev) system error"; |
1116 | msg = "(libev) system error"; |
591 | |
1117 | |
… | |
… | |
624 | #endif |
1150 | #endif |
625 | } |
1151 | } |
626 | |
1152 | |
627 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
1153 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
628 | |
1154 | |
629 | void |
1155 | void ecb_cold |
630 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
1156 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
631 | { |
1157 | { |
632 | alloc = cb; |
1158 | alloc = cb; |
633 | } |
1159 | } |
634 | |
1160 | |
… | |
… | |
723 | #undef VAR |
1249 | #undef VAR |
724 | }; |
1250 | }; |
725 | #include "ev_wrap.h" |
1251 | #include "ev_wrap.h" |
726 | |
1252 | |
727 | static struct ev_loop default_loop_struct; |
1253 | static struct ev_loop default_loop_struct; |
728 | struct ev_loop *ev_default_loop_ptr; |
1254 | EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ |
729 | |
1255 | |
730 | #else |
1256 | #else |
731 | |
1257 | |
732 | ev_tstamp ev_rt_now; |
1258 | EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ |
733 | #define VAR(name,decl) static decl; |
1259 | #define VAR(name,decl) static decl; |
734 | #include "ev_vars.h" |
1260 | #include "ev_vars.h" |
735 | #undef VAR |
1261 | #undef VAR |
736 | |
1262 | |
737 | static int ev_default_loop_ptr; |
1263 | static int ev_default_loop_ptr; |
… | |
… | |
816 | select (0, 0, 0, 0, &tv); |
1342 | select (0, 0, 0, 0, &tv); |
817 | #endif |
1343 | #endif |
818 | } |
1344 | } |
819 | } |
1345 | } |
820 | |
1346 | |
821 | inline_speed int |
|
|
822 | ev_timeout_to_ms (ev_tstamp timeout) |
|
|
823 | { |
|
|
824 | int ms = timeout * 1000. + .999999; |
|
|
825 | |
|
|
826 | return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1; |
|
|
827 | } |
|
|
828 | |
|
|
829 | /*****************************************************************************/ |
1347 | /*****************************************************************************/ |
830 | |
1348 | |
831 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
1349 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
832 | |
1350 | |
833 | /* find a suitable new size for the given array, */ |
1351 | /* find a suitable new size for the given array, */ |
… | |
… | |
839 | |
1357 | |
840 | do |
1358 | do |
841 | ncur <<= 1; |
1359 | ncur <<= 1; |
842 | while (cnt > ncur); |
1360 | while (cnt > ncur); |
843 | |
1361 | |
844 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
1362 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */ |
845 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
1363 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
846 | { |
1364 | { |
847 | ncur *= elem; |
1365 | ncur *= elem; |
848 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
1366 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
849 | ncur = ncur - sizeof (void *) * 4; |
1367 | ncur = ncur - sizeof (void *) * 4; |
… | |
… | |
851 | } |
1369 | } |
852 | |
1370 | |
853 | return ncur; |
1371 | return ncur; |
854 | } |
1372 | } |
855 | |
1373 | |
856 | static noinline void * |
1374 | static void * noinline ecb_cold |
857 | array_realloc (int elem, void *base, int *cur, int cnt) |
1375 | array_realloc (int elem, void *base, int *cur, int cnt) |
858 | { |
1376 | { |
859 | *cur = array_nextsize (elem, *cur, cnt); |
1377 | *cur = array_nextsize (elem, *cur, cnt); |
860 | return ev_realloc (base, elem * *cur); |
1378 | return ev_realloc (base, elem * *cur); |
861 | } |
1379 | } |
… | |
… | |
864 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
1382 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
865 | |
1383 | |
866 | #define array_needsize(type,base,cur,cnt,init) \ |
1384 | #define array_needsize(type,base,cur,cnt,init) \ |
867 | if (expect_false ((cnt) > (cur))) \ |
1385 | if (expect_false ((cnt) > (cur))) \ |
868 | { \ |
1386 | { \ |
869 | int ocur_ = (cur); \ |
1387 | int ecb_unused ocur_ = (cur); \ |
870 | (base) = (type *)array_realloc \ |
1388 | (base) = (type *)array_realloc \ |
871 | (sizeof (type), (base), &(cur), (cnt)); \ |
1389 | (sizeof (type), (base), &(cur), (cnt)); \ |
872 | init ((base) + (ocur_), (cur) - ocur_); \ |
1390 | init ((base) + (ocur_), (cur) - ocur_); \ |
873 | } |
1391 | } |
874 | |
1392 | |
… | |
… | |
974 | inline_size void |
1492 | inline_size void |
975 | fd_reify (EV_P) |
1493 | fd_reify (EV_P) |
976 | { |
1494 | { |
977 | int i; |
1495 | int i; |
978 | |
1496 | |
|
|
1497 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
1498 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1499 | { |
|
|
1500 | int fd = fdchanges [i]; |
|
|
1501 | ANFD *anfd = anfds + fd; |
|
|
1502 | |
|
|
1503 | if (anfd->reify & EV__IOFDSET && anfd->head) |
|
|
1504 | { |
|
|
1505 | SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
1506 | |
|
|
1507 | if (handle != anfd->handle) |
|
|
1508 | { |
|
|
1509 | unsigned long arg; |
|
|
1510 | |
|
|
1511 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); |
|
|
1512 | |
|
|
1513 | /* handle changed, but fd didn't - we need to do it in two steps */ |
|
|
1514 | backend_modify (EV_A_ fd, anfd->events, 0); |
|
|
1515 | anfd->events = 0; |
|
|
1516 | anfd->handle = handle; |
|
|
1517 | } |
|
|
1518 | } |
|
|
1519 | } |
|
|
1520 | #endif |
|
|
1521 | |
979 | for (i = 0; i < fdchangecnt; ++i) |
1522 | for (i = 0; i < fdchangecnt; ++i) |
980 | { |
1523 | { |
981 | int fd = fdchanges [i]; |
1524 | int fd = fdchanges [i]; |
982 | ANFD *anfd = anfds + fd; |
1525 | ANFD *anfd = anfds + fd; |
983 | ev_io *w; |
1526 | ev_io *w; |
… | |
… | |
985 | unsigned char o_events = anfd->events; |
1528 | unsigned char o_events = anfd->events; |
986 | unsigned char o_reify = anfd->reify; |
1529 | unsigned char o_reify = anfd->reify; |
987 | |
1530 | |
988 | anfd->reify = 0; |
1531 | anfd->reify = 0; |
989 | |
1532 | |
990 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
991 | if (o_reify & EV__IOFDSET) |
|
|
992 | { |
|
|
993 | unsigned long arg; |
|
|
994 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
995 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
|
|
996 | printf ("oi %d %x\n", fd, anfd->handle);//D |
|
|
997 | } |
|
|
998 | #endif |
|
|
999 | |
|
|
1000 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
1533 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
1001 | { |
1534 | { |
1002 | anfd->events = 0; |
1535 | anfd->events = 0; |
1003 | |
1536 | |
1004 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
1537 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
… | |
… | |
1029 | fdchanges [fdchangecnt - 1] = fd; |
1562 | fdchanges [fdchangecnt - 1] = fd; |
1030 | } |
1563 | } |
1031 | } |
1564 | } |
1032 | |
1565 | |
1033 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
1566 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
1034 | inline_speed void |
1567 | inline_speed void ecb_cold |
1035 | fd_kill (EV_P_ int fd) |
1568 | fd_kill (EV_P_ int fd) |
1036 | { |
1569 | { |
1037 | ev_io *w; |
1570 | ev_io *w; |
1038 | |
1571 | |
1039 | while ((w = (ev_io *)anfds [fd].head)) |
1572 | while ((w = (ev_io *)anfds [fd].head)) |
… | |
… | |
1042 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
1575 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
1043 | } |
1576 | } |
1044 | } |
1577 | } |
1045 | |
1578 | |
1046 | /* check whether the given fd is actually valid, for error recovery */ |
1579 | /* check whether the given fd is actually valid, for error recovery */ |
1047 | inline_size int |
1580 | inline_size int ecb_cold |
1048 | fd_valid (int fd) |
1581 | fd_valid (int fd) |
1049 | { |
1582 | { |
1050 | #ifdef _WIN32 |
1583 | #ifdef _WIN32 |
1051 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
1584 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
1052 | #else |
1585 | #else |
1053 | return fcntl (fd, F_GETFD) != -1; |
1586 | return fcntl (fd, F_GETFD) != -1; |
1054 | #endif |
1587 | #endif |
1055 | } |
1588 | } |
1056 | |
1589 | |
1057 | /* called on EBADF to verify fds */ |
1590 | /* called on EBADF to verify fds */ |
1058 | static void noinline |
1591 | static void noinline ecb_cold |
1059 | fd_ebadf (EV_P) |
1592 | fd_ebadf (EV_P) |
1060 | { |
1593 | { |
1061 | int fd; |
1594 | int fd; |
1062 | |
1595 | |
1063 | for (fd = 0; fd < anfdmax; ++fd) |
1596 | for (fd = 0; fd < anfdmax; ++fd) |
… | |
… | |
1065 | if (!fd_valid (fd) && errno == EBADF) |
1598 | if (!fd_valid (fd) && errno == EBADF) |
1066 | fd_kill (EV_A_ fd); |
1599 | fd_kill (EV_A_ fd); |
1067 | } |
1600 | } |
1068 | |
1601 | |
1069 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
1602 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
1070 | static void noinline |
1603 | static void noinline ecb_cold |
1071 | fd_enomem (EV_P) |
1604 | fd_enomem (EV_P) |
1072 | { |
1605 | { |
1073 | int fd; |
1606 | int fd; |
1074 | |
1607 | |
1075 | for (fd = anfdmax; fd--; ) |
1608 | for (fd = anfdmax; fd--; ) |
… | |
… | |
1270 | |
1803 | |
1271 | /*****************************************************************************/ |
1804 | /*****************************************************************************/ |
1272 | |
1805 | |
1273 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1806 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1274 | |
1807 | |
1275 | static void noinline |
1808 | static void noinline ecb_cold |
1276 | evpipe_init (EV_P) |
1809 | evpipe_init (EV_P) |
1277 | { |
1810 | { |
1278 | if (!ev_is_active (&pipe_w)) |
1811 | if (!ev_is_active (&pipe_w)) |
1279 | { |
1812 | { |
1280 | # if EV_USE_EVENTFD |
1813 | # if EV_USE_EVENTFD |
… | |
… | |
1302 | ev_io_start (EV_A_ &pipe_w); |
1835 | ev_io_start (EV_A_ &pipe_w); |
1303 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
1836 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
1304 | } |
1837 | } |
1305 | } |
1838 | } |
1306 | |
1839 | |
1307 | inline_size void |
1840 | inline_speed void |
1308 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1841 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1309 | { |
1842 | { |
1310 | if (!*flag) |
1843 | if (expect_true (*flag)) |
|
|
1844 | return; |
|
|
1845 | |
|
|
1846 | *flag = 1; |
|
|
1847 | |
|
|
1848 | ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ |
|
|
1849 | |
|
|
1850 | pipe_write_skipped = 1; |
|
|
1851 | |
|
|
1852 | ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */ |
|
|
1853 | |
|
|
1854 | if (pipe_write_wanted) |
1311 | { |
1855 | { |
|
|
1856 | int old_errno; |
|
|
1857 | |
|
|
1858 | pipe_write_skipped = 0; /* just an optimisation, no fence needed */ |
|
|
1859 | |
1312 | int old_errno = errno; /* save errno because write might clobber it */ |
1860 | old_errno = errno; /* save errno because write will clobber it */ |
1313 | char dummy; |
|
|
1314 | |
|
|
1315 | *flag = 1; |
|
|
1316 | |
1861 | |
1317 | #if EV_USE_EVENTFD |
1862 | #if EV_USE_EVENTFD |
1318 | if (evfd >= 0) |
1863 | if (evfd >= 0) |
1319 | { |
1864 | { |
1320 | uint64_t counter = 1; |
1865 | uint64_t counter = 1; |
1321 | write (evfd, &counter, sizeof (uint64_t)); |
1866 | write (evfd, &counter, sizeof (uint64_t)); |
1322 | } |
1867 | } |
1323 | else |
1868 | else |
1324 | #endif |
1869 | #endif |
|
|
1870 | { |
1325 | /* win32 people keep sending patches that change this write() to send() */ |
1871 | /* win32 people keep sending patches that change this write() to send() */ |
1326 | /* and then run away. but send() is wrong, it wants a socket handle on win32 */ |
1872 | /* and then run away. but send() is wrong, it wants a socket handle on win32 */ |
1327 | /* so when you think this write should be a send instead, please find out */ |
1873 | /* so when you think this write should be a send instead, please find out */ |
1328 | /* where your send() is from - it's definitely not the microsoft send, and */ |
1874 | /* where your send() is from - it's definitely not the microsoft send, and */ |
1329 | /* tell me. thank you. */ |
1875 | /* tell me. thank you. */ |
|
|
1876 | /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */ |
|
|
1877 | /* check the ev documentation on how to use this flag */ |
1330 | write (evpipe [1], &dummy, 1); |
1878 | write (evpipe [1], &(evpipe [1]), 1); |
|
|
1879 | } |
1331 | |
1880 | |
1332 | errno = old_errno; |
1881 | errno = old_errno; |
1333 | } |
1882 | } |
1334 | } |
1883 | } |
1335 | |
1884 | |
… | |
… | |
1338 | static void |
1887 | static void |
1339 | pipecb (EV_P_ ev_io *iow, int revents) |
1888 | pipecb (EV_P_ ev_io *iow, int revents) |
1340 | { |
1889 | { |
1341 | int i; |
1890 | int i; |
1342 | |
1891 | |
|
|
1892 | if (revents & EV_READ) |
|
|
1893 | { |
1343 | #if EV_USE_EVENTFD |
1894 | #if EV_USE_EVENTFD |
1344 | if (evfd >= 0) |
1895 | if (evfd >= 0) |
1345 | { |
1896 | { |
1346 | uint64_t counter; |
1897 | uint64_t counter; |
1347 | read (evfd, &counter, sizeof (uint64_t)); |
1898 | read (evfd, &counter, sizeof (uint64_t)); |
1348 | } |
1899 | } |
1349 | else |
1900 | else |
1350 | #endif |
1901 | #endif |
1351 | { |
1902 | { |
1352 | char dummy; |
1903 | char dummy; |
1353 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
1904 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
1354 | read (evpipe [0], &dummy, 1); |
1905 | read (evpipe [0], &dummy, 1); |
|
|
1906 | } |
1355 | } |
1907 | } |
|
|
1908 | |
|
|
1909 | pipe_write_skipped = 0; |
1356 | |
1910 | |
1357 | #if EV_SIGNAL_ENABLE |
1911 | #if EV_SIGNAL_ENABLE |
1358 | if (sig_pending) |
1912 | if (sig_pending) |
1359 | { |
1913 | { |
1360 | sig_pending = 0; |
1914 | sig_pending = 0; |
1361 | |
1915 | |
1362 | for (i = EV_NSIG - 1; i--; ) |
1916 | for (i = EV_NSIG - 1; i--; ) |
1363 | if (expect_false (signals [i].pending)) |
1917 | if (expect_false (signals [i].pending)) |
1364 | ev_feed_signal_event (EV_A_ i + 1); |
1918 | ev_feed_signal_event (EV_A_ i + 1); |
… | |
… | |
1389 | EV_P = signals [signum - 1].loop; |
1943 | EV_P = signals [signum - 1].loop; |
1390 | |
1944 | |
1391 | if (!EV_A) |
1945 | if (!EV_A) |
1392 | return; |
1946 | return; |
1393 | #endif |
1947 | #endif |
|
|
1948 | |
|
|
1949 | if (!ev_active (&pipe_w)) |
|
|
1950 | return; |
1394 | |
1951 | |
1395 | signals [signum - 1].pending = 1; |
1952 | signals [signum - 1].pending = 1; |
1396 | evpipe_write (EV_A_ &sig_pending); |
1953 | evpipe_write (EV_A_ &sig_pending); |
1397 | } |
1954 | } |
1398 | |
1955 | |
… | |
… | |
1530 | #endif |
2087 | #endif |
1531 | #if EV_USE_SELECT |
2088 | #if EV_USE_SELECT |
1532 | # include "ev_select.c" |
2089 | # include "ev_select.c" |
1533 | #endif |
2090 | #endif |
1534 | |
2091 | |
1535 | int |
2092 | int ecb_cold |
1536 | ev_version_major (void) |
2093 | ev_version_major (void) |
1537 | { |
2094 | { |
1538 | return EV_VERSION_MAJOR; |
2095 | return EV_VERSION_MAJOR; |
1539 | } |
2096 | } |
1540 | |
2097 | |
1541 | int |
2098 | int ecb_cold |
1542 | ev_version_minor (void) |
2099 | ev_version_minor (void) |
1543 | { |
2100 | { |
1544 | return EV_VERSION_MINOR; |
2101 | return EV_VERSION_MINOR; |
1545 | } |
2102 | } |
1546 | |
2103 | |
1547 | /* return true if we are running with elevated privileges and should ignore env variables */ |
2104 | /* return true if we are running with elevated privileges and should ignore env variables */ |
1548 | int inline_size |
2105 | int inline_size ecb_cold |
1549 | enable_secure (void) |
2106 | enable_secure (void) |
1550 | { |
2107 | { |
1551 | #ifdef _WIN32 |
2108 | #ifdef _WIN32 |
1552 | return 0; |
2109 | return 0; |
1553 | #else |
2110 | #else |
1554 | return getuid () != geteuid () |
2111 | return getuid () != geteuid () |
1555 | || getgid () != getegid (); |
2112 | || getgid () != getegid (); |
1556 | #endif |
2113 | #endif |
1557 | } |
2114 | } |
1558 | |
2115 | |
1559 | unsigned int |
2116 | unsigned int ecb_cold |
1560 | ev_supported_backends (void) |
2117 | ev_supported_backends (void) |
1561 | { |
2118 | { |
1562 | unsigned int flags = 0; |
2119 | unsigned int flags = 0; |
1563 | |
2120 | |
1564 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
2121 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
… | |
… | |
1568 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
2125 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
1569 | |
2126 | |
1570 | return flags; |
2127 | return flags; |
1571 | } |
2128 | } |
1572 | |
2129 | |
1573 | unsigned int |
2130 | unsigned int ecb_cold |
1574 | ev_recommended_backends (void) |
2131 | ev_recommended_backends (void) |
1575 | { |
2132 | { |
1576 | unsigned int flags = ev_supported_backends (); |
2133 | unsigned int flags = ev_supported_backends (); |
1577 | |
2134 | |
1578 | #ifndef __NetBSD__ |
2135 | #ifndef __NetBSD__ |
… | |
… | |
1590 | #endif |
2147 | #endif |
1591 | |
2148 | |
1592 | return flags; |
2149 | return flags; |
1593 | } |
2150 | } |
1594 | |
2151 | |
1595 | unsigned int |
2152 | unsigned int ecb_cold |
1596 | ev_embeddable_backends (void) |
2153 | ev_embeddable_backends (void) |
1597 | { |
2154 | { |
1598 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
2155 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
1599 | |
2156 | |
1600 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
2157 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
… | |
… | |
1645 | ev_userdata (EV_P) |
2202 | ev_userdata (EV_P) |
1646 | { |
2203 | { |
1647 | return userdata; |
2204 | return userdata; |
1648 | } |
2205 | } |
1649 | |
2206 | |
|
|
2207 | void |
1650 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
2208 | ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
1651 | { |
2209 | { |
1652 | invoke_cb = invoke_pending_cb; |
2210 | invoke_cb = invoke_pending_cb; |
1653 | } |
2211 | } |
1654 | |
2212 | |
|
|
2213 | void |
1655 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
2214 | ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
1656 | { |
2215 | { |
1657 | release_cb = release; |
2216 | release_cb = release; |
1658 | acquire_cb = acquire; |
2217 | acquire_cb = acquire; |
1659 | } |
2218 | } |
1660 | #endif |
2219 | #endif |
1661 | |
2220 | |
1662 | /* initialise a loop structure, must be zero-initialised */ |
2221 | /* initialise a loop structure, must be zero-initialised */ |
1663 | static void noinline |
2222 | static void noinline ecb_cold |
1664 | loop_init (EV_P_ unsigned int flags) |
2223 | loop_init (EV_P_ unsigned int flags) |
1665 | { |
2224 | { |
1666 | if (!backend) |
2225 | if (!backend) |
1667 | { |
2226 | { |
1668 | origflags = flags; |
2227 | origflags = flags; |
… | |
… | |
1696 | if (!(flags & EVFLAG_NOENV) |
2255 | if (!(flags & EVFLAG_NOENV) |
1697 | && !enable_secure () |
2256 | && !enable_secure () |
1698 | && getenv ("LIBEV_FLAGS")) |
2257 | && getenv ("LIBEV_FLAGS")) |
1699 | flags = atoi (getenv ("LIBEV_FLAGS")); |
2258 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1700 | |
2259 | |
1701 | ev_rt_now = ev_time (); |
2260 | ev_rt_now = ev_time (); |
1702 | mn_now = get_clock (); |
2261 | mn_now = get_clock (); |
1703 | now_floor = mn_now; |
2262 | now_floor = mn_now; |
1704 | rtmn_diff = ev_rt_now - mn_now; |
2263 | rtmn_diff = ev_rt_now - mn_now; |
1705 | #if EV_FEATURE_API |
2264 | #if EV_FEATURE_API |
1706 | invoke_cb = ev_invoke_pending; |
2265 | invoke_cb = ev_invoke_pending; |
1707 | #endif |
2266 | #endif |
1708 | |
2267 | |
1709 | io_blocktime = 0.; |
2268 | io_blocktime = 0.; |
1710 | timeout_blocktime = 0.; |
2269 | timeout_blocktime = 0.; |
1711 | backend = 0; |
2270 | backend = 0; |
1712 | backend_fd = -1; |
2271 | backend_fd = -1; |
1713 | sig_pending = 0; |
2272 | sig_pending = 0; |
1714 | #if EV_ASYNC_ENABLE |
2273 | #if EV_ASYNC_ENABLE |
1715 | async_pending = 0; |
2274 | async_pending = 0; |
1716 | #endif |
2275 | #endif |
|
|
2276 | pipe_write_skipped = 0; |
|
|
2277 | pipe_write_wanted = 0; |
1717 | #if EV_USE_INOTIFY |
2278 | #if EV_USE_INOTIFY |
1718 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
2279 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
1719 | #endif |
2280 | #endif |
1720 | #if EV_USE_SIGNALFD |
2281 | #if EV_USE_SIGNALFD |
1721 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
2282 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1722 | #endif |
2283 | #endif |
1723 | |
2284 | |
1724 | if (!(flags & EVBACKEND_MASK)) |
2285 | if (!(flags & EVBACKEND_MASK)) |
1725 | flags |= ev_recommended_backends (); |
2286 | flags |= ev_recommended_backends (); |
1726 | |
2287 | |
… | |
… | |
1751 | #endif |
2312 | #endif |
1752 | } |
2313 | } |
1753 | } |
2314 | } |
1754 | |
2315 | |
1755 | /* free up a loop structure */ |
2316 | /* free up a loop structure */ |
1756 | void |
2317 | void ecb_cold |
1757 | ev_loop_destroy (EV_P) |
2318 | ev_loop_destroy (EV_P) |
1758 | { |
2319 | { |
1759 | int i; |
2320 | int i; |
1760 | |
2321 | |
1761 | #if EV_MULTIPLICITY |
2322 | #if EV_MULTIPLICITY |
… | |
… | |
1891 | infy_fork (EV_A); |
2452 | infy_fork (EV_A); |
1892 | #endif |
2453 | #endif |
1893 | |
2454 | |
1894 | if (ev_is_active (&pipe_w)) |
2455 | if (ev_is_active (&pipe_w)) |
1895 | { |
2456 | { |
1896 | /* this "locks" the handlers against writing to the pipe */ |
2457 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
1897 | /* while we modify the fd vars */ |
|
|
1898 | sig_pending = 1; |
|
|
1899 | #if EV_ASYNC_ENABLE |
|
|
1900 | async_pending = 1; |
|
|
1901 | #endif |
|
|
1902 | |
2458 | |
1903 | ev_ref (EV_A); |
2459 | ev_ref (EV_A); |
1904 | ev_io_stop (EV_A_ &pipe_w); |
2460 | ev_io_stop (EV_A_ &pipe_w); |
1905 | |
2461 | |
1906 | #if EV_USE_EVENTFD |
2462 | #if EV_USE_EVENTFD |
… | |
… | |
1924 | postfork = 0; |
2480 | postfork = 0; |
1925 | } |
2481 | } |
1926 | |
2482 | |
1927 | #if EV_MULTIPLICITY |
2483 | #if EV_MULTIPLICITY |
1928 | |
2484 | |
1929 | struct ev_loop * |
2485 | struct ev_loop * ecb_cold |
1930 | ev_loop_new (unsigned int flags) |
2486 | ev_loop_new (unsigned int flags) |
1931 | { |
2487 | { |
1932 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
2488 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
1933 | |
2489 | |
1934 | memset (EV_A, 0, sizeof (struct ev_loop)); |
2490 | memset (EV_A, 0, sizeof (struct ev_loop)); |
… | |
… | |
1942 | } |
2498 | } |
1943 | |
2499 | |
1944 | #endif /* multiplicity */ |
2500 | #endif /* multiplicity */ |
1945 | |
2501 | |
1946 | #if EV_VERIFY |
2502 | #if EV_VERIFY |
1947 | static void noinline |
2503 | static void noinline ecb_cold |
1948 | verify_watcher (EV_P_ W w) |
2504 | verify_watcher (EV_P_ W w) |
1949 | { |
2505 | { |
1950 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
2506 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
1951 | |
2507 | |
1952 | if (w->pending) |
2508 | if (w->pending) |
1953 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
2509 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
1954 | } |
2510 | } |
1955 | |
2511 | |
1956 | static void noinline |
2512 | static void noinline ecb_cold |
1957 | verify_heap (EV_P_ ANHE *heap, int N) |
2513 | verify_heap (EV_P_ ANHE *heap, int N) |
1958 | { |
2514 | { |
1959 | int i; |
2515 | int i; |
1960 | |
2516 | |
1961 | for (i = HEAP0; i < N + HEAP0; ++i) |
2517 | for (i = HEAP0; i < N + HEAP0; ++i) |
… | |
… | |
1966 | |
2522 | |
1967 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
2523 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
1968 | } |
2524 | } |
1969 | } |
2525 | } |
1970 | |
2526 | |
1971 | static void noinline |
2527 | static void noinline ecb_cold |
1972 | array_verify (EV_P_ W *ws, int cnt) |
2528 | array_verify (EV_P_ W *ws, int cnt) |
1973 | { |
2529 | { |
1974 | while (cnt--) |
2530 | while (cnt--) |
1975 | { |
2531 | { |
1976 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
2532 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
… | |
… | |
1978 | } |
2534 | } |
1979 | } |
2535 | } |
1980 | #endif |
2536 | #endif |
1981 | |
2537 | |
1982 | #if EV_FEATURE_API |
2538 | #if EV_FEATURE_API |
1983 | void |
2539 | void ecb_cold |
1984 | ev_verify (EV_P) |
2540 | ev_verify (EV_P) |
1985 | { |
2541 | { |
1986 | #if EV_VERIFY |
2542 | #if EV_VERIFY |
1987 | int i; |
2543 | int i; |
1988 | WL w; |
2544 | WL w; |
… | |
… | |
2054 | #endif |
2610 | #endif |
2055 | } |
2611 | } |
2056 | #endif |
2612 | #endif |
2057 | |
2613 | |
2058 | #if EV_MULTIPLICITY |
2614 | #if EV_MULTIPLICITY |
2059 | struct ev_loop * |
2615 | struct ev_loop * ecb_cold |
2060 | #else |
2616 | #else |
2061 | int |
2617 | int |
2062 | #endif |
2618 | #endif |
2063 | ev_default_loop (unsigned int flags) |
2619 | ev_default_loop (unsigned int flags) |
2064 | { |
2620 | { |
… | |
… | |
2193 | } |
2749 | } |
2194 | } |
2750 | } |
2195 | |
2751 | |
2196 | #if EV_PERIODIC_ENABLE |
2752 | #if EV_PERIODIC_ENABLE |
2197 | |
2753 | |
2198 | inline_speed |
2754 | static void noinline |
2199 | periodic_recalc (EV_P_ ev_periodic *w) |
2755 | periodic_recalc (EV_P_ ev_periodic *w) |
2200 | { |
2756 | { |
2201 | /* TODO: use slow but potentially more correct incremental algo, */ |
2757 | ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; |
2202 | /* also do not rely on ceil */ |
2758 | ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); |
2203 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2759 | |
|
|
2760 | /* the above almost always errs on the low side */ |
|
|
2761 | while (at <= ev_rt_now) |
|
|
2762 | { |
|
|
2763 | ev_tstamp nat = at + w->interval; |
|
|
2764 | |
|
|
2765 | /* when resolution fails us, we use ev_rt_now */ |
|
|
2766 | if (expect_false (nat == at)) |
|
|
2767 | { |
|
|
2768 | at = ev_rt_now; |
|
|
2769 | break; |
|
|
2770 | } |
|
|
2771 | |
|
|
2772 | at = nat; |
|
|
2773 | } |
|
|
2774 | |
|
|
2775 | ev_at (w) = at; |
2204 | } |
2776 | } |
2205 | |
2777 | |
2206 | /* make periodics pending */ |
2778 | /* make periodics pending */ |
2207 | inline_size void |
2779 | inline_size void |
2208 | periodics_reify (EV_P) |
2780 | periodics_reify (EV_P) |
… | |
… | |
2230 | downheap (periodics, periodiccnt, HEAP0); |
2802 | downheap (periodics, periodiccnt, HEAP0); |
2231 | } |
2803 | } |
2232 | else if (w->interval) |
2804 | else if (w->interval) |
2233 | { |
2805 | { |
2234 | periodic_recalc (EV_A_ w); |
2806 | periodic_recalc (EV_A_ w); |
2235 | |
|
|
2236 | /* if next trigger time is not sufficiently in the future, put it there */ |
|
|
2237 | /* this might happen because of floating point inexactness */ |
|
|
2238 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
|
|
2239 | { |
|
|
2240 | ev_at (w) += w->interval; |
|
|
2241 | |
|
|
2242 | /* if interval is unreasonably low we might still have a time in the past */ |
|
|
2243 | /* so correct this. this will make the periodic very inexact, but the user */ |
|
|
2244 | /* has effectively asked to get triggered more often than possible */ |
|
|
2245 | if (ev_at (w) < ev_rt_now) |
|
|
2246 | ev_at (w) = ev_rt_now; |
|
|
2247 | } |
|
|
2248 | |
|
|
2249 | ANHE_at_cache (periodics [HEAP0]); |
2807 | ANHE_at_cache (periodics [HEAP0]); |
2250 | downheap (periodics, periodiccnt, HEAP0); |
2808 | downheap (periodics, periodiccnt, HEAP0); |
2251 | } |
2809 | } |
2252 | else |
2810 | else |
2253 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
2811 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
… | |
… | |
2261 | } |
2819 | } |
2262 | } |
2820 | } |
2263 | |
2821 | |
2264 | /* simply recalculate all periodics */ |
2822 | /* simply recalculate all periodics */ |
2265 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
2823 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
2266 | static void noinline |
2824 | static void noinline ecb_cold |
2267 | periodics_reschedule (EV_P) |
2825 | periodics_reschedule (EV_P) |
2268 | { |
2826 | { |
2269 | int i; |
2827 | int i; |
2270 | |
2828 | |
2271 | /* adjust periodics after time jump */ |
2829 | /* adjust periodics after time jump */ |
… | |
… | |
2284 | reheap (periodics, periodiccnt); |
2842 | reheap (periodics, periodiccnt); |
2285 | } |
2843 | } |
2286 | #endif |
2844 | #endif |
2287 | |
2845 | |
2288 | /* adjust all timers by a given offset */ |
2846 | /* adjust all timers by a given offset */ |
2289 | static void noinline |
2847 | static void noinline ecb_cold |
2290 | timers_reschedule (EV_P_ ev_tstamp adjust) |
2848 | timers_reschedule (EV_P_ ev_tstamp adjust) |
2291 | { |
2849 | { |
2292 | int i; |
2850 | int i; |
2293 | |
2851 | |
2294 | for (i = 0; i < timercnt; ++i) |
2852 | for (i = 0; i < timercnt; ++i) |
… | |
… | |
2331 | * doesn't hurt either as we only do this on time-jumps or |
2889 | * doesn't hurt either as we only do this on time-jumps or |
2332 | * in the unlikely event of having been preempted here. |
2890 | * in the unlikely event of having been preempted here. |
2333 | */ |
2891 | */ |
2334 | for (i = 4; --i; ) |
2892 | for (i = 4; --i; ) |
2335 | { |
2893 | { |
|
|
2894 | ev_tstamp diff; |
2336 | rtmn_diff = ev_rt_now - mn_now; |
2895 | rtmn_diff = ev_rt_now - mn_now; |
2337 | |
2896 | |
|
|
2897 | diff = odiff - rtmn_diff; |
|
|
2898 | |
2338 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
2899 | if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) |
2339 | return; /* all is well */ |
2900 | return; /* all is well */ |
2340 | |
2901 | |
2341 | ev_rt_now = ev_time (); |
2902 | ev_rt_now = ev_time (); |
2342 | mn_now = get_clock (); |
2903 | mn_now = get_clock (); |
2343 | now_floor = mn_now; |
2904 | now_floor = mn_now; |
… | |
… | |
2433 | ev_tstamp prev_mn_now = mn_now; |
2994 | ev_tstamp prev_mn_now = mn_now; |
2434 | |
2995 | |
2435 | /* update time to cancel out callback processing overhead */ |
2996 | /* update time to cancel out callback processing overhead */ |
2436 | time_update (EV_A_ 1e100); |
2997 | time_update (EV_A_ 1e100); |
2437 | |
2998 | |
|
|
2999 | /* from now on, we want a pipe-wake-up */ |
|
|
3000 | pipe_write_wanted = 1; |
|
|
3001 | |
|
|
3002 | ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ |
|
|
3003 | |
2438 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) |
3004 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
2439 | { |
3005 | { |
2440 | waittime = MAX_BLOCKTIME; |
3006 | waittime = MAX_BLOCKTIME; |
2441 | |
3007 | |
2442 | if (timercnt) |
3008 | if (timercnt) |
2443 | { |
3009 | { |
2444 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
3010 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
2445 | if (waittime > to) waittime = to; |
3011 | if (waittime > to) waittime = to; |
2446 | } |
3012 | } |
2447 | |
3013 | |
2448 | #if EV_PERIODIC_ENABLE |
3014 | #if EV_PERIODIC_ENABLE |
2449 | if (periodiccnt) |
3015 | if (periodiccnt) |
2450 | { |
3016 | { |
2451 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
3017 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now; |
2452 | if (waittime > to) waittime = to; |
3018 | if (waittime > to) waittime = to; |
2453 | } |
3019 | } |
2454 | #endif |
3020 | #endif |
2455 | |
3021 | |
2456 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
3022 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
2457 | if (expect_false (waittime < timeout_blocktime)) |
3023 | if (expect_false (waittime < timeout_blocktime)) |
2458 | waittime = timeout_blocktime; |
3024 | waittime = timeout_blocktime; |
|
|
3025 | |
|
|
3026 | /* at this point, we NEED to wait, so we have to ensure */ |
|
|
3027 | /* to pass a minimum nonzero value to the backend */ |
|
|
3028 | if (expect_false (waittime < backend_mintime)) |
|
|
3029 | waittime = backend_mintime; |
2459 | |
3030 | |
2460 | /* extra check because io_blocktime is commonly 0 */ |
3031 | /* extra check because io_blocktime is commonly 0 */ |
2461 | if (expect_false (io_blocktime)) |
3032 | if (expect_false (io_blocktime)) |
2462 | { |
3033 | { |
2463 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
3034 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
2464 | |
3035 | |
2465 | if (sleeptime > waittime - backend_fudge) |
3036 | if (sleeptime > waittime - backend_mintime) |
2466 | sleeptime = waittime - backend_fudge; |
3037 | sleeptime = waittime - backend_mintime; |
2467 | |
3038 | |
2468 | if (expect_true (sleeptime > 0.)) |
3039 | if (expect_true (sleeptime > 0.)) |
2469 | { |
3040 | { |
2470 | ev_sleep (sleeptime); |
3041 | ev_sleep (sleeptime); |
2471 | waittime -= sleeptime; |
3042 | waittime -= sleeptime; |
… | |
… | |
2478 | #endif |
3049 | #endif |
2479 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
3050 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
2480 | backend_poll (EV_A_ waittime); |
3051 | backend_poll (EV_A_ waittime); |
2481 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
3052 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
2482 | |
3053 | |
|
|
3054 | pipe_write_wanted = 0; /* just an optimisation, no fence needed */ |
|
|
3055 | |
|
|
3056 | if (pipe_write_skipped) |
|
|
3057 | { |
|
|
3058 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
|
|
3059 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
3060 | } |
|
|
3061 | |
|
|
3062 | |
2483 | /* update ev_rt_now, do magic */ |
3063 | /* update ev_rt_now, do magic */ |
2484 | time_update (EV_A_ waittime + sleeptime); |
3064 | time_update (EV_A_ waittime + sleeptime); |
2485 | } |
3065 | } |
2486 | |
3066 | |
2487 | /* queue pending timers and reschedule them */ |
3067 | /* queue pending timers and reschedule them */ |
… | |
… | |
2737 | |
3317 | |
2738 | void noinline |
3318 | void noinline |
2739 | ev_timer_again (EV_P_ ev_timer *w) |
3319 | ev_timer_again (EV_P_ ev_timer *w) |
2740 | { |
3320 | { |
2741 | EV_FREQUENT_CHECK; |
3321 | EV_FREQUENT_CHECK; |
|
|
3322 | |
|
|
3323 | clear_pending (EV_A_ (W)w); |
2742 | |
3324 | |
2743 | if (ev_is_active (w)) |
3325 | if (ev_is_active (w)) |
2744 | { |
3326 | { |
2745 | if (w->repeat) |
3327 | if (w->repeat) |
2746 | { |
3328 | { |
… | |
… | |
3063 | if (!pend || pend == path) |
3645 | if (!pend || pend == path) |
3064 | break; |
3646 | break; |
3065 | |
3647 | |
3066 | *pend = 0; |
3648 | *pend = 0; |
3067 | w->wd = inotify_add_watch (fs_fd, path, mask); |
3649 | w->wd = inotify_add_watch (fs_fd, path, mask); |
3068 | } |
3650 | } |
3069 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
3651 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
3070 | } |
3652 | } |
3071 | } |
3653 | } |
3072 | |
3654 | |
3073 | if (w->wd >= 0) |
3655 | if (w->wd >= 0) |
… | |
… | |
3140 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3722 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3141 | ofs += sizeof (struct inotify_event) + ev->len; |
3723 | ofs += sizeof (struct inotify_event) + ev->len; |
3142 | } |
3724 | } |
3143 | } |
3725 | } |
3144 | |
3726 | |
3145 | inline_size void |
3727 | inline_size void ecb_cold |
3146 | ev_check_2625 (EV_P) |
3728 | ev_check_2625 (EV_P) |
3147 | { |
3729 | { |
3148 | /* kernels < 2.6.25 are borked |
3730 | /* kernels < 2.6.25 are borked |
3149 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
3731 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
3150 | */ |
3732 | */ |
… | |
… | |
3775 | } |
4357 | } |
3776 | |
4358 | |
3777 | /*****************************************************************************/ |
4359 | /*****************************************************************************/ |
3778 | |
4360 | |
3779 | #if EV_WALK_ENABLE |
4361 | #if EV_WALK_ENABLE |
3780 | void |
4362 | void ecb_cold |
3781 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
4363 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
3782 | { |
4364 | { |
3783 | int i, j; |
4365 | int i, j; |
3784 | ev_watcher_list *wl, *wn; |
4366 | ev_watcher_list *wl, *wn; |
3785 | |
4367 | |
… | |
… | |
3829 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
4411 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
3830 | #endif |
4412 | #endif |
3831 | |
4413 | |
3832 | #if EV_IDLE_ENABLE |
4414 | #if EV_IDLE_ENABLE |
3833 | if (types & EV_IDLE) |
4415 | if (types & EV_IDLE) |
3834 | for (j = NUMPRI; i--; ) |
4416 | for (j = NUMPRI; j--; ) |
3835 | for (i = idlecnt [j]; i--; ) |
4417 | for (i = idlecnt [j]; i--; ) |
3836 | cb (EV_A_ EV_IDLE, idles [j][i]); |
4418 | cb (EV_A_ EV_IDLE, idles [j][i]); |
3837 | #endif |
4419 | #endif |
3838 | |
4420 | |
3839 | #if EV_FORK_ENABLE |
4421 | #if EV_FORK_ENABLE |
… | |
… | |
3892 | |
4474 | |
3893 | #if EV_MULTIPLICITY |
4475 | #if EV_MULTIPLICITY |
3894 | #include "ev_wrap.h" |
4476 | #include "ev_wrap.h" |
3895 | #endif |
4477 | #endif |
3896 | |
4478 | |
3897 | EV_CPP(}) |
|
|
3898 | |
|
|