1 | /* |
1 | /* |
2 | * libev event processing core, watcher management |
2 | * libev event processing core, watcher management |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 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 | * |
… | |
… | |
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 | |
47 | |
48 | #if HAVE_FLOOR |
48 | # if HAVE_FLOOR |
49 | # ifndef EV_USE_FLOOR |
49 | # ifndef EV_USE_FLOOR |
50 | # define EV_USE_FLOOR 1 |
50 | # define EV_USE_FLOOR 1 |
|
|
51 | # endif |
51 | # endif |
52 | # endif |
52 | #endif |
|
|
53 | |
53 | |
54 | # if HAVE_CLOCK_SYSCALL |
54 | # if HAVE_CLOCK_SYSCALL |
55 | # ifndef EV_USE_CLOCK_SYSCALL |
55 | # ifndef EV_USE_CLOCK_SYSCALL |
56 | # define EV_USE_CLOCK_SYSCALL 1 |
56 | # define EV_USE_CLOCK_SYSCALL 1 |
57 | # ifndef EV_USE_REALTIME |
57 | # ifndef EV_USE_REALTIME |
… | |
… | |
241 | #elif defined SIGARRAYSIZE |
241 | #elif defined SIGARRAYSIZE |
242 | # define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ |
242 | # define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ |
243 | #elif defined _sys_nsig |
243 | #elif defined _sys_nsig |
244 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
244 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
245 | #else |
245 | #else |
246 | # error "unable to find value for NSIG, please report" |
246 | # define EV_NSIG (8 * sizeof (sigset_t) + 1) |
247 | /* to make it compile regardless, just remove the above line, */ |
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|
248 | /* but consider reporting it, too! :) */ |
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|
249 | # define EV_NSIG 65 |
|
|
250 | #endif |
247 | #endif |
251 | |
248 | |
252 | #ifndef EV_USE_FLOOR |
249 | #ifndef EV_USE_FLOOR |
253 | # define EV_USE_FLOOR 0 |
250 | # define EV_USE_FLOOR 0 |
254 | #endif |
251 | #endif |
255 | |
252 | |
256 | #ifndef EV_USE_CLOCK_SYSCALL |
253 | #ifndef EV_USE_CLOCK_SYSCALL |
257 | # if __linux && __GLIBC__ >= 2 |
254 | # if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17 |
258 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
255 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
259 | # else |
256 | # else |
260 | # define EV_USE_CLOCK_SYSCALL 0 |
257 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
258 | # endif |
|
|
259 | #endif |
|
|
260 | |
|
|
261 | #if !(_POSIX_TIMERS > 0) |
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|
262 | # ifndef EV_USE_MONOTONIC |
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|
263 | # define EV_USE_MONOTONIC 0 |
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|
264 | # endif |
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|
265 | # ifndef EV_USE_REALTIME |
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|
266 | # define EV_USE_REALTIME 0 |
261 | # endif |
267 | # endif |
262 | #endif |
268 | #endif |
263 | |
269 | |
264 | #ifndef EV_USE_MONOTONIC |
270 | #ifndef EV_USE_MONOTONIC |
265 | # if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 |
271 | # if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 |
… | |
… | |
355 | # define EV_USE_4HEAP EV_FEATURE_DATA |
361 | # define EV_USE_4HEAP EV_FEATURE_DATA |
356 | #endif |
362 | #endif |
357 | |
363 | |
358 | #ifndef EV_HEAP_CACHE_AT |
364 | #ifndef EV_HEAP_CACHE_AT |
359 | # define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
365 | # define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
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|
366 | #endif |
|
|
367 | |
|
|
368 | #ifdef ANDROID |
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|
369 | /* supposedly, android doesn't typedef fd_mask */ |
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|
370 | # undef EV_USE_SELECT |
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|
371 | # define EV_USE_SELECT 0 |
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|
372 | /* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ |
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373 | # undef EV_USE_CLOCK_SYSCALL |
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374 | # define EV_USE_CLOCK_SYSCALL 0 |
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|
375 | #endif |
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376 | |
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|
377 | /* aix's poll.h seems to cause lots of trouble */ |
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|
378 | #ifdef _AIX |
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|
379 | /* AIX has a completely broken poll.h header */ |
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|
380 | # undef EV_USE_POLL |
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|
381 | # define EV_USE_POLL 0 |
360 | #endif |
382 | #endif |
361 | |
383 | |
362 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
384 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
363 | /* which makes programs even slower. might work on other unices, too. */ |
385 | /* which makes programs even slower. might work on other unices, too. */ |
364 | #if EV_USE_CLOCK_SYSCALL |
386 | #if EV_USE_CLOCK_SYSCALL |
… | |
… | |
372 | # define EV_USE_CLOCK_SYSCALL 0 |
394 | # define EV_USE_CLOCK_SYSCALL 0 |
373 | # endif |
395 | # endif |
374 | #endif |
396 | #endif |
375 | |
397 | |
376 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
398 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
377 | |
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|
378 | #ifdef _AIX |
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|
379 | /* AIX has a completely broken poll.h header */ |
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380 | # undef EV_USE_POLL |
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|
381 | # define EV_USE_POLL 0 |
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|
382 | #endif |
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|
383 | |
399 | |
384 | #ifndef CLOCK_MONOTONIC |
400 | #ifndef CLOCK_MONOTONIC |
385 | # undef EV_USE_MONOTONIC |
401 | # undef EV_USE_MONOTONIC |
386 | # define EV_USE_MONOTONIC 0 |
402 | # define EV_USE_MONOTONIC 0 |
387 | #endif |
403 | #endif |
… | |
… | |
475 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
491 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
476 | /* ECB.H BEGIN */ |
492 | /* ECB.H BEGIN */ |
477 | /* |
493 | /* |
478 | * libecb - http://software.schmorp.de/pkg/libecb |
494 | * libecb - http://software.schmorp.de/pkg/libecb |
479 | * |
495 | * |
480 | * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> |
496 | * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de> |
481 | * Copyright (©) 2011 Emanuele Giaquinta |
497 | * Copyright (©) 2011 Emanuele Giaquinta |
482 | * All rights reserved. |
498 | * All rights reserved. |
483 | * |
499 | * |
484 | * Redistribution and use in source and binary forms, with or without modifica- |
500 | * Redistribution and use in source and binary forms, with or without modifica- |
485 | * tion, are permitted provided that the following conditions are met: |
501 | * tion, are permitted provided that the following conditions are met: |
… | |
… | |
499 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
515 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
500 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
516 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
501 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
517 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
502 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
518 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
503 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
519 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
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520 | * |
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|
521 | * Alternatively, the contents of this file may be used under the terms of |
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|
522 | * the GNU General Public License ("GPL") version 2 or any later version, |
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|
523 | * in which case the provisions of the GPL are applicable instead of |
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|
524 | * the above. If you wish to allow the use of your version of this file |
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|
525 | * only under the terms of the GPL and not to allow others to use your |
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|
526 | * version of this file under the BSD license, indicate your decision |
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|
527 | * by deleting the provisions above and replace them with the notice |
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|
528 | * and other provisions required by the GPL. If you do not delete the |
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|
529 | * provisions above, a recipient may use your version of this file under |
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|
530 | * either the BSD or the GPL. |
504 | */ |
531 | */ |
505 | |
532 | |
506 | #ifndef ECB_H |
533 | #ifndef ECB_H |
507 | #define ECB_H |
534 | #define ECB_H |
508 | |
535 | |
509 | /* 16 bits major, 16 bits minor */ |
536 | /* 16 bits major, 16 bits minor */ |
510 | #define ECB_VERSION 0x00010001 |
537 | #define ECB_VERSION 0x00010003 |
511 | |
538 | |
512 | #ifdef _WIN32 |
539 | #ifdef _WIN32 |
513 | typedef signed char int8_t; |
540 | typedef signed char int8_t; |
514 | typedef unsigned char uint8_t; |
541 | typedef unsigned char uint8_t; |
515 | typedef signed short int16_t; |
542 | typedef signed short int16_t; |
… | |
… | |
530 | #else |
557 | #else |
531 | #define ECB_PTRSIZE 4 |
558 | #define ECB_PTRSIZE 4 |
532 | typedef uint32_t uintptr_t; |
559 | typedef uint32_t uintptr_t; |
533 | typedef int32_t intptr_t; |
560 | typedef int32_t intptr_t; |
534 | #endif |
561 | #endif |
535 | typedef intptr_t ptrdiff_t; |
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|
536 | #else |
562 | #else |
537 | #include <inttypes.h> |
563 | #include <inttypes.h> |
538 | #if UINTMAX_MAX > 0xffffffffU |
564 | #if UINTMAX_MAX > 0xffffffffU |
539 | #define ECB_PTRSIZE 8 |
565 | #define ECB_PTRSIZE 8 |
540 | #else |
566 | #else |
541 | #define ECB_PTRSIZE 4 |
567 | #define ECB_PTRSIZE 4 |
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|
568 | #endif |
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569 | #endif |
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570 | |
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|
571 | /* work around x32 idiocy by defining proper macros */ |
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572 | #if __amd64 || __x86_64 || _M_AMD64 || _M_X64 |
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573 | #if _ILP32 |
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|
574 | #define ECB_AMD64_X32 1 |
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|
575 | #else |
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576 | #define ECB_AMD64 1 |
542 | #endif |
577 | #endif |
543 | #endif |
578 | #endif |
544 | |
579 | |
545 | /* many compilers define _GNUC_ to some versions but then only implement |
580 | /* many compilers define _GNUC_ to some versions but then only implement |
546 | * what their idiot authors think are the "more important" extensions, |
581 | * what their idiot authors think are the "more important" extensions, |
… | |
… | |
555 | #else |
590 | #else |
556 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
591 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
557 | #endif |
592 | #endif |
558 | #endif |
593 | #endif |
559 | |
594 | |
560 | #define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ |
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|
561 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
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562 | #define ECB_C11 (__STDC_VERSION__ >= 201112L) |
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563 | #define ECB_CPP (__cplusplus+0) |
595 | #define ECB_CPP (__cplusplus+0) |
564 | #define ECB_CPP98 (__cplusplus >= 199711L) |
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565 | #define ECB_CPP11 (__cplusplus >= 201103L) |
596 | #define ECB_CPP11 (__cplusplus >= 201103L) |
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597 | |
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598 | #if ECB_CPP |
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599 | #define ECB_C 0 |
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600 | #define ECB_STDC_VERSION 0 |
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601 | #else |
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602 | #define ECB_C 1 |
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603 | #define ECB_STDC_VERSION __STDC_VERSION__ |
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604 | #endif |
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605 | |
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606 | #define ECB_C99 (ECB_STDC_VERSION >= 199901L) |
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607 | #define ECB_C11 (ECB_STDC_VERSION >= 201112L) |
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608 | |
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609 | #if ECB_CPP |
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610 | #define ECB_EXTERN_C extern "C" |
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611 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
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612 | #define ECB_EXTERN_C_END } |
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613 | #else |
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614 | #define ECB_EXTERN_C extern |
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615 | #define ECB_EXTERN_C_BEG |
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616 | #define ECB_EXTERN_C_END |
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617 | #endif |
566 | |
618 | |
567 | /*****************************************************************************/ |
619 | /*****************************************************************************/ |
568 | |
620 | |
569 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
621 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
570 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
622 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
… | |
… | |
593 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
645 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
594 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
646 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
595 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
647 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
596 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
648 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
597 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
649 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
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650 | #elif __aarch64__ |
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651 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") |
598 | #elif __sparc || __sparc__ |
652 | #elif (__sparc || __sparc__) && !__sparcv8 |
599 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
653 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
600 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
654 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
601 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
655 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
602 | #elif defined __s390__ || defined __s390x__ |
656 | #elif defined __s390__ || defined __s390x__ |
603 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
657 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
604 | #elif defined __mips__ |
658 | #elif defined __mips__ |
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659 | /* GNU/Linux emulates sync on mips1 architectures, so we force its use */ |
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660 | /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */ |
605 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
661 | #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory") |
606 | #elif defined __alpha__ |
662 | #elif defined __alpha__ |
607 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
663 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
608 | #elif defined __hppa__ |
664 | #elif defined __hppa__ |
609 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
665 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
610 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
666 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
611 | #elif defined __ia64__ |
667 | #elif defined __ia64__ |
612 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
668 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
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669 | #elif defined __m68k__ |
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670 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
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671 | #elif defined __m88k__ |
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672 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory") |
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673 | #elif defined __sh__ |
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674 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
613 | #endif |
675 | #endif |
614 | #endif |
676 | #endif |
615 | #endif |
677 | #endif |
616 | |
678 | |
617 | #ifndef ECB_MEMORY_FENCE |
679 | #ifndef ECB_MEMORY_FENCE |
618 | #if ECB_GCC_VERSION(4,7) |
680 | #if ECB_GCC_VERSION(4,7) |
619 | /* see comment below about the C11 memory model. in short - avoid */ |
681 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
620 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
682 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
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683 | #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
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684 | #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) |
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685 | |
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686 | /* The __has_feature syntax from clang is so misdesigned that we cannot use it |
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687 | * without risking compile time errors with other compilers. We *could* |
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688 | * define our own ecb_clang_has_feature, but I just can't be bothered to work |
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689 | * around this shit time and again. |
621 | #elif defined __clang && __has_feature (cxx_atomic) |
690 | * #elif defined __clang && __has_feature (cxx_atomic) |
622 | /* see above */ |
691 | * // see comment below (stdatomic.h) about the C11 memory model. |
623 | #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
692 | * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
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693 | * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
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694 | * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
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695 | */ |
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|
696 | |
624 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
697 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
625 | #define ECB_MEMORY_FENCE __sync_synchronize () |
698 | #define ECB_MEMORY_FENCE __sync_synchronize () |
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699 | #elif _MSC_VER >= 1500 /* VC++ 2008 */ |
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700 | /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ |
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701 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
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702 | #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier() |
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703 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */ |
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|
704 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier() |
626 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
705 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
627 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
706 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
628 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
707 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
629 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
708 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
630 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
709 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
… | |
… | |
644 | #ifndef ECB_MEMORY_FENCE |
723 | #ifndef ECB_MEMORY_FENCE |
645 | #if ECB_C11 && !defined __STDC_NO_ATOMICS__ |
724 | #if ECB_C11 && !defined __STDC_NO_ATOMICS__ |
646 | /* we assume that these memory fences work on all variables/all memory accesses, */ |
725 | /* we assume that these memory fences work on all variables/all memory accesses, */ |
647 | /* not just C11 atomics and atomic accesses */ |
726 | /* not just C11 atomics and atomic accesses */ |
648 | #include <stdatomic.h> |
727 | #include <stdatomic.h> |
649 | /* unfortunately, the C11 memory model seems to be very limited, and unable to express */ |
728 | /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */ |
650 | /* simple barrier semantics. That means we need to take out thor's hammer. */ |
729 | /* any fence other than seq_cst, which isn't very efficient for us. */ |
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730 | /* Why that is, we don't know - either the C11 memory model is quite useless */ |
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|
731 | /* for most usages, or gcc and clang have a bug */ |
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732 | /* I *currently* lean towards the latter, and inefficiently implement */ |
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733 | /* all three of ecb's fences as a seq_cst fence */ |
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734 | /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */ |
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735 | /* for all __atomic_thread_fence's except seq_cst */ |
651 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
736 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
652 | #endif |
737 | #endif |
653 | #endif |
738 | #endif |
654 | |
739 | |
655 | #ifndef ECB_MEMORY_FENCE |
740 | #ifndef ECB_MEMORY_FENCE |
… | |
… | |
712 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
797 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
713 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
798 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
714 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
799 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
715 | #else |
800 | #else |
716 | #define ecb_attribute(attrlist) |
801 | #define ecb_attribute(attrlist) |
|
|
802 | |
|
|
803 | /* possible C11 impl for integral types |
|
|
804 | typedef struct ecb_is_constant_struct ecb_is_constant_struct; |
|
|
805 | #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ |
|
|
806 | |
717 | #define ecb_is_constant(expr) 0 |
807 | #define ecb_is_constant(expr) 0 |
718 | #define ecb_expect(expr,value) (expr) |
808 | #define ecb_expect(expr,value) (expr) |
719 | #define ecb_prefetch(addr,rw,locality) |
809 | #define ecb_prefetch(addr,rw,locality) |
720 | #endif |
810 | #endif |
721 | |
811 | |
… | |
… | |
724 | #define ecb_decltype(x) __decltype(x) |
814 | #define ecb_decltype(x) __decltype(x) |
725 | #elif ECB_GCC_VERSION(3,0) |
815 | #elif ECB_GCC_VERSION(3,0) |
726 | #define ecb_decltype(x) __typeof(x) |
816 | #define ecb_decltype(x) __typeof(x) |
727 | #endif |
817 | #endif |
728 | |
818 | |
|
|
819 | #if _MSC_VER >= 1300 |
|
|
820 | #define ecb_deprecated __declspec(deprecated) |
|
|
821 | #else |
|
|
822 | #define ecb_deprecated ecb_attribute ((__deprecated__)) |
|
|
823 | #endif |
|
|
824 | |
729 | #define ecb_noinline ecb_attribute ((__noinline__)) |
825 | #define ecb_noinline ecb_attribute ((__noinline__)) |
730 | #define ecb_unused ecb_attribute ((__unused__)) |
826 | #define ecb_unused ecb_attribute ((__unused__)) |
731 | #define ecb_const ecb_attribute ((__const__)) |
827 | #define ecb_const ecb_attribute ((__const__)) |
732 | #define ecb_pure ecb_attribute ((__pure__)) |
828 | #define ecb_pure ecb_attribute ((__pure__)) |
733 | |
829 | |
|
|
830 | /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */ |
734 | #if ECB_C11 |
831 | #if ECB_C11 |
735 | #define ecb_noreturn _Noreturn |
832 | #define ecb_noreturn _Noreturn |
736 | #else |
833 | #else |
737 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
834 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
738 | #endif |
835 | #endif |
… | |
… | |
932 | ecb_inline void ecb_unreachable (void) ecb_noreturn; |
1029 | ecb_inline void ecb_unreachable (void) ecb_noreturn; |
933 | ecb_inline void ecb_unreachable (void) { } |
1030 | ecb_inline void ecb_unreachable (void) { } |
934 | #endif |
1031 | #endif |
935 | |
1032 | |
936 | /* try to tell the compiler that some condition is definitely true */ |
1033 | /* try to tell the compiler that some condition is definitely true */ |
937 | #define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) |
1034 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
938 | |
1035 | |
939 | ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; |
1036 | ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; |
940 | ecb_inline unsigned char |
1037 | ecb_inline unsigned char |
941 | ecb_byteorder_helper (void) |
1038 | ecb_byteorder_helper (void) |
942 | { |
1039 | { |
943 | const uint32_t u = 0x11223344; |
1040 | /* the union code still generates code under pressure in gcc, */ |
944 | return *(unsigned char *)&u; |
1041 | /* but less than using pointers, and always seems to */ |
|
|
1042 | /* successfully return a constant. */ |
|
|
1043 | /* the reason why we have this horrible preprocessor mess */ |
|
|
1044 | /* is to avoid it in all cases, at least on common architectures */ |
|
|
1045 | /* or when using a recent enough gcc version (>= 4.6) */ |
|
|
1046 | #if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64 |
|
|
1047 | return 0x44; |
|
|
1048 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ |
|
|
1049 | return 0x44; |
|
|
1050 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
|
|
1051 | return 0x11; |
|
|
1052 | #else |
|
|
1053 | union |
|
|
1054 | { |
|
|
1055 | uint32_t i; |
|
|
1056 | uint8_t c; |
|
|
1057 | } u = { 0x11223344 }; |
|
|
1058 | return u.c; |
|
|
1059 | #endif |
945 | } |
1060 | } |
946 | |
1061 | |
947 | ecb_inline ecb_bool ecb_big_endian (void) ecb_const; |
1062 | ecb_inline ecb_bool ecb_big_endian (void) ecb_const; |
948 | ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
1063 | ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
949 | ecb_inline ecb_bool ecb_little_endian (void) ecb_const; |
1064 | ecb_inline ecb_bool ecb_little_endian (void) ecb_const; |
… | |
… | |
980 | } |
1095 | } |
981 | #else |
1096 | #else |
982 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
1097 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
983 | #endif |
1098 | #endif |
984 | |
1099 | |
|
|
1100 | /*******************************************************************************/ |
|
|
1101 | /* floating point stuff, can be disabled by defining ECB_NO_LIBM */ |
|
|
1102 | |
|
|
1103 | /* basically, everything uses "ieee pure-endian" floating point numbers */ |
|
|
1104 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
|
|
1105 | #if 0 \ |
|
|
1106 | || __i386 || __i386__ \ |
|
|
1107 | || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ |
|
|
1108 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
|
|
1109 | || defined __s390__ || defined __s390x__ \ |
|
|
1110 | || defined __mips__ \ |
|
|
1111 | || defined __alpha__ \ |
|
|
1112 | || defined __hppa__ \ |
|
|
1113 | || defined __ia64__ \ |
|
|
1114 | || defined __m68k__ \ |
|
|
1115 | || defined __m88k__ \ |
|
|
1116 | || defined __sh__ \ |
|
|
1117 | || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \ |
|
|
1118 | || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ |
|
|
1119 | || defined __aarch64__ |
|
|
1120 | #define ECB_STDFP 1 |
|
|
1121 | #include <string.h> /* for memcpy */ |
|
|
1122 | #else |
|
|
1123 | #define ECB_STDFP 0 |
|
|
1124 | #endif |
|
|
1125 | |
|
|
1126 | #ifndef ECB_NO_LIBM |
|
|
1127 | |
|
|
1128 | #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ |
|
|
1129 | |
|
|
1130 | /* only the oldest of old doesn't have this one. solaris. */ |
|
|
1131 | #ifdef INFINITY |
|
|
1132 | #define ECB_INFINITY INFINITY |
|
|
1133 | #else |
|
|
1134 | #define ECB_INFINITY HUGE_VAL |
|
|
1135 | #endif |
|
|
1136 | |
|
|
1137 | #ifdef NAN |
|
|
1138 | #define ECB_NAN NAN |
|
|
1139 | #else |
|
|
1140 | #define ECB_NAN ECB_INFINITY |
|
|
1141 | #endif |
|
|
1142 | |
|
|
1143 | /* converts an ieee half/binary16 to a float */ |
|
|
1144 | ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; |
|
|
1145 | ecb_function_ float |
|
|
1146 | ecb_binary16_to_float (uint16_t x) |
|
|
1147 | { |
|
|
1148 | int e = (x >> 10) & 0x1f; |
|
|
1149 | int m = x & 0x3ff; |
|
|
1150 | float r; |
|
|
1151 | |
|
|
1152 | if (!e ) r = ldexpf (m , -24); |
|
|
1153 | else if (e != 31) r = ldexpf (m + 0x400, e - 25); |
|
|
1154 | else if (m ) r = ECB_NAN; |
|
|
1155 | else r = ECB_INFINITY; |
|
|
1156 | |
|
|
1157 | return x & 0x8000 ? -r : r; |
|
|
1158 | } |
|
|
1159 | |
|
|
1160 | /* convert a float to ieee single/binary32 */ |
|
|
1161 | ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; |
|
|
1162 | ecb_function_ uint32_t |
|
|
1163 | ecb_float_to_binary32 (float x) |
|
|
1164 | { |
|
|
1165 | uint32_t r; |
|
|
1166 | |
|
|
1167 | #if ECB_STDFP |
|
|
1168 | memcpy (&r, &x, 4); |
|
|
1169 | #else |
|
|
1170 | /* slow emulation, works for anything but -0 */ |
|
|
1171 | uint32_t m; |
|
|
1172 | int e; |
|
|
1173 | |
|
|
1174 | if (x == 0e0f ) return 0x00000000U; |
|
|
1175 | if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
|
|
1176 | if (x < -3.40282346638528860e+38f) return 0xff800000U; |
|
|
1177 | if (x != x ) return 0x7fbfffffU; |
|
|
1178 | |
|
|
1179 | m = frexpf (x, &e) * 0x1000000U; |
|
|
1180 | |
|
|
1181 | r = m & 0x80000000U; |
|
|
1182 | |
|
|
1183 | if (r) |
|
|
1184 | m = -m; |
|
|
1185 | |
|
|
1186 | if (e <= -126) |
|
|
1187 | { |
|
|
1188 | m &= 0xffffffU; |
|
|
1189 | m >>= (-125 - e); |
|
|
1190 | e = -126; |
|
|
1191 | } |
|
|
1192 | |
|
|
1193 | r |= (e + 126) << 23; |
|
|
1194 | r |= m & 0x7fffffU; |
|
|
1195 | #endif |
|
|
1196 | |
|
|
1197 | return r; |
|
|
1198 | } |
|
|
1199 | |
|
|
1200 | /* converts an ieee single/binary32 to a float */ |
|
|
1201 | ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const; |
|
|
1202 | ecb_function_ float |
|
|
1203 | ecb_binary32_to_float (uint32_t x) |
|
|
1204 | { |
|
|
1205 | float r; |
|
|
1206 | |
|
|
1207 | #if ECB_STDFP |
|
|
1208 | memcpy (&r, &x, 4); |
|
|
1209 | #else |
|
|
1210 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1211 | int neg = x >> 31; |
|
|
1212 | int e = (x >> 23) & 0xffU; |
|
|
1213 | |
|
|
1214 | x &= 0x7fffffU; |
|
|
1215 | |
|
|
1216 | if (e) |
|
|
1217 | x |= 0x800000U; |
|
|
1218 | else |
|
|
1219 | e = 1; |
|
|
1220 | |
|
|
1221 | /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ |
|
|
1222 | r = ldexpf (x * (0.5f / 0x800000U), e - 126); |
|
|
1223 | |
|
|
1224 | r = neg ? -r : r; |
|
|
1225 | #endif |
|
|
1226 | |
|
|
1227 | return r; |
|
|
1228 | } |
|
|
1229 | |
|
|
1230 | /* convert a double to ieee double/binary64 */ |
|
|
1231 | ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const; |
|
|
1232 | ecb_function_ uint64_t |
|
|
1233 | ecb_double_to_binary64 (double x) |
|
|
1234 | { |
|
|
1235 | uint64_t r; |
|
|
1236 | |
|
|
1237 | #if ECB_STDFP |
|
|
1238 | memcpy (&r, &x, 8); |
|
|
1239 | #else |
|
|
1240 | /* slow emulation, works for anything but -0 */ |
|
|
1241 | uint64_t m; |
|
|
1242 | int e; |
|
|
1243 | |
|
|
1244 | if (x == 0e0 ) return 0x0000000000000000U; |
|
|
1245 | if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U; |
|
|
1246 | if (x < -1.79769313486231470e+308) return 0xfff0000000000000U; |
|
|
1247 | if (x != x ) return 0X7ff7ffffffffffffU; |
|
|
1248 | |
|
|
1249 | m = frexp (x, &e) * 0x20000000000000U; |
|
|
1250 | |
|
|
1251 | r = m & 0x8000000000000000;; |
|
|
1252 | |
|
|
1253 | if (r) |
|
|
1254 | m = -m; |
|
|
1255 | |
|
|
1256 | if (e <= -1022) |
|
|
1257 | { |
|
|
1258 | m &= 0x1fffffffffffffU; |
|
|
1259 | m >>= (-1021 - e); |
|
|
1260 | e = -1022; |
|
|
1261 | } |
|
|
1262 | |
|
|
1263 | r |= ((uint64_t)(e + 1022)) << 52; |
|
|
1264 | r |= m & 0xfffffffffffffU; |
|
|
1265 | #endif |
|
|
1266 | |
|
|
1267 | return r; |
|
|
1268 | } |
|
|
1269 | |
|
|
1270 | /* converts an ieee double/binary64 to a double */ |
|
|
1271 | ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const; |
|
|
1272 | ecb_function_ double |
|
|
1273 | ecb_binary64_to_double (uint64_t x) |
|
|
1274 | { |
|
|
1275 | double r; |
|
|
1276 | |
|
|
1277 | #if ECB_STDFP |
|
|
1278 | memcpy (&r, &x, 8); |
|
|
1279 | #else |
|
|
1280 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1281 | int neg = x >> 63; |
|
|
1282 | int e = (x >> 52) & 0x7ffU; |
|
|
1283 | |
|
|
1284 | x &= 0xfffffffffffffU; |
|
|
1285 | |
|
|
1286 | if (e) |
|
|
1287 | x |= 0x10000000000000U; |
|
|
1288 | else |
|
|
1289 | e = 1; |
|
|
1290 | |
|
|
1291 | /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */ |
|
|
1292 | r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022); |
|
|
1293 | |
|
|
1294 | r = neg ? -r : r; |
|
|
1295 | #endif |
|
|
1296 | |
|
|
1297 | return r; |
|
|
1298 | } |
|
|
1299 | |
|
|
1300 | #endif |
|
|
1301 | |
985 | #endif |
1302 | #endif |
986 | |
1303 | |
987 | /* ECB.H END */ |
1304 | /* ECB.H END */ |
988 | |
1305 | |
989 | #if ECB_MEMORY_FENCE_NEEDS_PTHREADS |
1306 | #if ECB_MEMORY_FENCE_NEEDS_PTHREADS |
… | |
… | |
1188 | } |
1505 | } |
1189 | |
1506 | |
1190 | static void * |
1507 | static void * |
1191 | ev_realloc_emul (void *ptr, long size) EV_THROW |
1508 | ev_realloc_emul (void *ptr, long size) EV_THROW |
1192 | { |
1509 | { |
1193 | #if __GLIBC__ |
|
|
1194 | return realloc (ptr, size); |
|
|
1195 | #else |
|
|
1196 | /* some systems, notably openbsd and darwin, fail to properly |
1510 | /* some systems, notably openbsd and darwin, fail to properly |
1197 | * implement realloc (x, 0) (as required by both ansi c-89 and |
1511 | * implement realloc (x, 0) (as required by both ansi c-89 and |
1198 | * the single unix specification, so work around them here. |
1512 | * the single unix specification, so work around them here. |
|
|
1513 | * recently, also (at least) fedora and debian started breaking it, |
|
|
1514 | * despite documenting it otherwise. |
1199 | */ |
1515 | */ |
1200 | |
1516 | |
1201 | if (size) |
1517 | if (size) |
1202 | return realloc (ptr, size); |
1518 | return realloc (ptr, size); |
1203 | |
1519 | |
1204 | free (ptr); |
1520 | free (ptr); |
1205 | return 0; |
1521 | return 0; |
1206 | #endif |
|
|
1207 | } |
1522 | } |
1208 | |
1523 | |
1209 | static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; |
1524 | static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; |
1210 | |
1525 | |
1211 | void ecb_cold |
1526 | void ecb_cold |
… | |
… | |
1866 | static void noinline ecb_cold |
2181 | static void noinline ecb_cold |
1867 | evpipe_init (EV_P) |
2182 | evpipe_init (EV_P) |
1868 | { |
2183 | { |
1869 | if (!ev_is_active (&pipe_w)) |
2184 | if (!ev_is_active (&pipe_w)) |
1870 | { |
2185 | { |
|
|
2186 | int fds [2]; |
|
|
2187 | |
1871 | # if EV_USE_EVENTFD |
2188 | # if EV_USE_EVENTFD |
|
|
2189 | fds [0] = -1; |
1872 | evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
2190 | fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
1873 | if (evfd < 0 && errno == EINVAL) |
2191 | if (fds [1] < 0 && errno == EINVAL) |
1874 | evfd = eventfd (0, 0); |
2192 | fds [1] = eventfd (0, 0); |
1875 | |
2193 | |
1876 | if (evfd >= 0) |
2194 | if (fds [1] < 0) |
1877 | { |
|
|
1878 | evpipe [0] = -1; |
|
|
1879 | fd_intern (evfd); /* doing it twice doesn't hurt */ |
|
|
1880 | ev_io_set (&pipe_w, evfd, EV_READ); |
|
|
1881 | } |
|
|
1882 | else |
|
|
1883 | # endif |
2195 | # endif |
1884 | { |
2196 | { |
1885 | while (pipe (evpipe)) |
2197 | while (pipe (fds)) |
1886 | ev_syserr ("(libev) error creating signal/async pipe"); |
2198 | ev_syserr ("(libev) error creating signal/async pipe"); |
1887 | |
2199 | |
1888 | fd_intern (evpipe [0]); |
2200 | fd_intern (fds [0]); |
1889 | fd_intern (evpipe [1]); |
|
|
1890 | ev_io_set (&pipe_w, evpipe [0], EV_READ); |
|
|
1891 | } |
2201 | } |
1892 | |
2202 | |
|
|
2203 | evpipe [0] = fds [0]; |
|
|
2204 | |
|
|
2205 | if (evpipe [1] < 0) |
|
|
2206 | evpipe [1] = fds [1]; /* first call, set write fd */ |
|
|
2207 | else |
|
|
2208 | { |
|
|
2209 | /* on subsequent calls, do not change evpipe [1] */ |
|
|
2210 | /* so that evpipe_write can always rely on its value. */ |
|
|
2211 | /* this branch does not do anything sensible on windows, */ |
|
|
2212 | /* so must not be executed on windows */ |
|
|
2213 | |
|
|
2214 | dup2 (fds [1], evpipe [1]); |
|
|
2215 | close (fds [1]); |
|
|
2216 | } |
|
|
2217 | |
|
|
2218 | fd_intern (evpipe [1]); |
|
|
2219 | |
|
|
2220 | ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ); |
1893 | ev_io_start (EV_A_ &pipe_w); |
2221 | ev_io_start (EV_A_ &pipe_w); |
1894 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
2222 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
1895 | } |
2223 | } |
1896 | } |
2224 | } |
1897 | |
2225 | |
… | |
… | |
1918 | ECB_MEMORY_FENCE_RELEASE; |
2246 | ECB_MEMORY_FENCE_RELEASE; |
1919 | |
2247 | |
1920 | old_errno = errno; /* save errno because write will clobber it */ |
2248 | old_errno = errno; /* save errno because write will clobber it */ |
1921 | |
2249 | |
1922 | #if EV_USE_EVENTFD |
2250 | #if EV_USE_EVENTFD |
1923 | if (evfd >= 0) |
2251 | if (evpipe [0] < 0) |
1924 | { |
2252 | { |
1925 | uint64_t counter = 1; |
2253 | uint64_t counter = 1; |
1926 | write (evfd, &counter, sizeof (uint64_t)); |
2254 | write (evpipe [1], &counter, sizeof (uint64_t)); |
1927 | } |
2255 | } |
1928 | else |
2256 | else |
1929 | #endif |
2257 | #endif |
1930 | { |
2258 | { |
1931 | #ifdef _WIN32 |
2259 | #ifdef _WIN32 |
… | |
… | |
1951 | int i; |
2279 | int i; |
1952 | |
2280 | |
1953 | if (revents & EV_READ) |
2281 | if (revents & EV_READ) |
1954 | { |
2282 | { |
1955 | #if EV_USE_EVENTFD |
2283 | #if EV_USE_EVENTFD |
1956 | if (evfd >= 0) |
2284 | if (evpipe [0] < 0) |
1957 | { |
2285 | { |
1958 | uint64_t counter; |
2286 | uint64_t counter; |
1959 | read (evfd, &counter, sizeof (uint64_t)); |
2287 | read (evpipe [1], &counter, sizeof (uint64_t)); |
1960 | } |
2288 | } |
1961 | else |
2289 | else |
1962 | #endif |
2290 | #endif |
1963 | { |
2291 | { |
1964 | char dummy[4]; |
2292 | char dummy[4]; |
… | |
… | |
2014 | |
2342 | |
2015 | void |
2343 | void |
2016 | ev_feed_signal (int signum) EV_THROW |
2344 | ev_feed_signal (int signum) EV_THROW |
2017 | { |
2345 | { |
2018 | #if EV_MULTIPLICITY |
2346 | #if EV_MULTIPLICITY |
|
|
2347 | EV_P; |
|
|
2348 | ECB_MEMORY_FENCE_ACQUIRE; |
2019 | EV_P = signals [signum - 1].loop; |
2349 | EV_A = signals [signum - 1].loop; |
2020 | |
2350 | |
2021 | if (!EV_A) |
2351 | if (!EV_A) |
2022 | return; |
2352 | return; |
2023 | #endif |
2353 | #endif |
2024 | |
2354 | |
2025 | if (!ev_active (&pipe_w)) |
|
|
2026 | return; |
|
|
2027 | |
|
|
2028 | signals [signum - 1].pending = 1; |
2355 | signals [signum - 1].pending = 1; |
2029 | evpipe_write (EV_A_ &sig_pending); |
2356 | evpipe_write (EV_A_ &sig_pending); |
2030 | } |
2357 | } |
2031 | |
2358 | |
2032 | static void |
2359 | static void |
… | |
… | |
2042 | void noinline |
2369 | void noinline |
2043 | ev_feed_signal_event (EV_P_ int signum) EV_THROW |
2370 | ev_feed_signal_event (EV_P_ int signum) EV_THROW |
2044 | { |
2371 | { |
2045 | WL w; |
2372 | WL w; |
2046 | |
2373 | |
2047 | if (expect_false (signum <= 0 || signum > EV_NSIG)) |
2374 | if (expect_false (signum <= 0 || signum >= EV_NSIG)) |
2048 | return; |
2375 | return; |
2049 | |
2376 | |
2050 | --signum; |
2377 | --signum; |
2051 | |
2378 | |
2052 | #if EV_MULTIPLICITY |
2379 | #if EV_MULTIPLICITY |
… | |
… | |
2280 | { |
2607 | { |
2281 | return userdata; |
2608 | return userdata; |
2282 | } |
2609 | } |
2283 | |
2610 | |
2284 | void |
2611 | void |
2285 | ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW |
2612 | ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW |
2286 | { |
2613 | { |
2287 | invoke_cb = invoke_pending_cb; |
2614 | invoke_cb = invoke_pending_cb; |
2288 | } |
2615 | } |
2289 | |
2616 | |
2290 | void |
2617 | void |
2291 | ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW |
2618 | ev_set_loop_release_cb (EV_P_ ev_loop_callback release EV_THROW, ev_loop_callback acquire EV_THROW) EV_THROW |
2292 | { |
2619 | { |
2293 | release_cb = release; |
2620 | release_cb = release; |
2294 | acquire_cb = acquire; |
2621 | acquire_cb = acquire; |
2295 | } |
2622 | } |
2296 | #endif |
2623 | #endif |
… | |
… | |
2350 | #if EV_ASYNC_ENABLE |
2677 | #if EV_ASYNC_ENABLE |
2351 | async_pending = 0; |
2678 | async_pending = 0; |
2352 | #endif |
2679 | #endif |
2353 | pipe_write_skipped = 0; |
2680 | pipe_write_skipped = 0; |
2354 | pipe_write_wanted = 0; |
2681 | pipe_write_wanted = 0; |
|
|
2682 | evpipe [0] = -1; |
|
|
2683 | evpipe [1] = -1; |
2355 | #if EV_USE_INOTIFY |
2684 | #if EV_USE_INOTIFY |
2356 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
2685 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
2357 | #endif |
2686 | #endif |
2358 | #if EV_USE_SIGNALFD |
2687 | #if EV_USE_SIGNALFD |
2359 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
2688 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
… | |
… | |
2422 | if (ev_is_active (&pipe_w)) |
2751 | if (ev_is_active (&pipe_w)) |
2423 | { |
2752 | { |
2424 | /*ev_ref (EV_A);*/ |
2753 | /*ev_ref (EV_A);*/ |
2425 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
2754 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
2426 | |
2755 | |
2427 | #if EV_USE_EVENTFD |
|
|
2428 | if (evfd >= 0) |
|
|
2429 | close (evfd); |
|
|
2430 | #endif |
|
|
2431 | |
|
|
2432 | if (evpipe [0] >= 0) |
|
|
2433 | { |
|
|
2434 | EV_WIN32_CLOSE_FD (evpipe [0]); |
2756 | if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]); |
2435 | EV_WIN32_CLOSE_FD (evpipe [1]); |
2757 | if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]); |
2436 | } |
|
|
2437 | } |
2758 | } |
2438 | |
2759 | |
2439 | #if EV_USE_SIGNALFD |
2760 | #if EV_USE_SIGNALFD |
2440 | if (ev_is_active (&sigfd_w)) |
2761 | if (ev_is_active (&sigfd_w)) |
2441 | close (sigfd); |
2762 | close (sigfd); |
… | |
… | |
2527 | #endif |
2848 | #endif |
2528 | #if EV_USE_INOTIFY |
2849 | #if EV_USE_INOTIFY |
2529 | infy_fork (EV_A); |
2850 | infy_fork (EV_A); |
2530 | #endif |
2851 | #endif |
2531 | |
2852 | |
|
|
2853 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
2532 | if (ev_is_active (&pipe_w)) |
2854 | if (ev_is_active (&pipe_w)) |
2533 | { |
2855 | { |
2534 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
2856 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
2535 | |
2857 | |
2536 | ev_ref (EV_A); |
2858 | ev_ref (EV_A); |
2537 | ev_io_stop (EV_A_ &pipe_w); |
2859 | ev_io_stop (EV_A_ &pipe_w); |
2538 | |
2860 | |
2539 | #if EV_USE_EVENTFD |
|
|
2540 | if (evfd >= 0) |
|
|
2541 | close (evfd); |
|
|
2542 | #endif |
|
|
2543 | |
|
|
2544 | if (evpipe [0] >= 0) |
2861 | if (evpipe [0] >= 0) |
2545 | { |
|
|
2546 | EV_WIN32_CLOSE_FD (evpipe [0]); |
2862 | EV_WIN32_CLOSE_FD (evpipe [0]); |
2547 | EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
2548 | } |
|
|
2549 | |
2863 | |
2550 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
2551 | evpipe_init (EV_A); |
2864 | evpipe_init (EV_A); |
2552 | /* now iterate over everything, in case we missed something */ |
2865 | /* iterate over everything, in case we missed something before */ |
2553 | pipecb (EV_A_ &pipe_w, EV_READ); |
2866 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
2554 | #endif |
|
|
2555 | } |
2867 | } |
|
|
2868 | #endif |
2556 | |
2869 | |
2557 | postfork = 0; |
2870 | postfork = 0; |
2558 | } |
2871 | } |
2559 | |
2872 | |
2560 | #if EV_MULTIPLICITY |
2873 | #if EV_MULTIPLICITY |
… | |
… | |
2759 | } |
3072 | } |
2760 | |
3073 | |
2761 | void noinline |
3074 | void noinline |
2762 | ev_invoke_pending (EV_P) |
3075 | ev_invoke_pending (EV_P) |
2763 | { |
3076 | { |
2764 | for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */ |
3077 | pendingpri = NUMPRI; |
|
|
3078 | |
|
|
3079 | while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ |
|
|
3080 | { |
|
|
3081 | --pendingpri; |
|
|
3082 | |
2765 | while (pendingcnt [pendingpri]) |
3083 | while (pendingcnt [pendingpri]) |
2766 | { |
3084 | { |
2767 | ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; |
3085 | ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; |
2768 | |
3086 | |
2769 | p->w->pending = 0; |
3087 | p->w->pending = 0; |
2770 | EV_CB_INVOKE (p->w, p->events); |
3088 | EV_CB_INVOKE (p->w, p->events); |
2771 | EV_FREQUENT_CHECK; |
3089 | EV_FREQUENT_CHECK; |
2772 | } |
3090 | } |
|
|
3091 | } |
2773 | } |
3092 | } |
2774 | |
3093 | |
2775 | #if EV_IDLE_ENABLE |
3094 | #if EV_IDLE_ENABLE |
2776 | /* make idle watchers pending. this handles the "call-idle */ |
3095 | /* make idle watchers pending. this handles the "call-idle */ |
2777 | /* only when higher priorities are idle" logic */ |
3096 | /* only when higher priorities are idle" logic */ |
… | |
… | |
3135 | backend_poll (EV_A_ waittime); |
3454 | backend_poll (EV_A_ waittime); |
3136 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
3455 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
3137 | |
3456 | |
3138 | pipe_write_wanted = 0; /* just an optimisation, no fence needed */ |
3457 | pipe_write_wanted = 0; /* just an optimisation, no fence needed */ |
3139 | |
3458 | |
3140 | MEMORY_FENCE_ACQUIRE; |
3459 | ECB_MEMORY_FENCE_ACQUIRE; |
3141 | if (pipe_write_skipped) |
3460 | if (pipe_write_skipped) |
3142 | { |
3461 | { |
3143 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
3462 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
3144 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
3463 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
3145 | } |
3464 | } |
… | |
… | |
3523 | #if EV_MULTIPLICITY |
3842 | #if EV_MULTIPLICITY |
3524 | assert (("libev: a signal must not be attached to two different loops", |
3843 | assert (("libev: a signal must not be attached to two different loops", |
3525 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
3844 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
3526 | |
3845 | |
3527 | signals [w->signum - 1].loop = EV_A; |
3846 | signals [w->signum - 1].loop = EV_A; |
|
|
3847 | ECB_MEMORY_FENCE_RELEASE; |
3528 | #endif |
3848 | #endif |
3529 | |
3849 | |
3530 | EV_FREQUENT_CHECK; |
3850 | EV_FREQUENT_CHECK; |
3531 | |
3851 | |
3532 | #if EV_USE_SIGNALFD |
3852 | #if EV_USE_SIGNALFD |
… | |
… | |
3687 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
4007 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
3688 | |
4008 | |
3689 | static void noinline |
4009 | static void noinline |
3690 | infy_add (EV_P_ ev_stat *w) |
4010 | infy_add (EV_P_ ev_stat *w) |
3691 | { |
4011 | { |
3692 | w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); |
4012 | w->wd = inotify_add_watch (fs_fd, w->path, |
|
|
4013 | IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY |
|
|
4014 | | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO |
|
|
4015 | | IN_DONT_FOLLOW | IN_MASK_ADD); |
3693 | |
4016 | |
3694 | if (w->wd >= 0) |
4017 | if (w->wd >= 0) |
3695 | { |
4018 | { |
3696 | struct statfs sfs; |
4019 | struct statfs sfs; |
3697 | |
4020 | |
… | |
… | |
3701 | |
4024 | |
3702 | if (!fs_2625) |
4025 | if (!fs_2625) |
3703 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
4026 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
3704 | else if (!statfs (w->path, &sfs) |
4027 | else if (!statfs (w->path, &sfs) |
3705 | && (sfs.f_type == 0x1373 /* devfs */ |
4028 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
4029 | || sfs.f_type == 0x4006 /* fat */ |
|
|
4030 | || sfs.f_type == 0x4d44 /* msdos */ |
3706 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
4031 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
4032 | || sfs.f_type == 0x72b6 /* jffs2 */ |
|
|
4033 | || sfs.f_type == 0x858458f6 /* ramfs */ |
|
|
4034 | || sfs.f_type == 0x5346544e /* ntfs */ |
3707 | || sfs.f_type == 0x3153464a /* jfs */ |
4035 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
4036 | || sfs.f_type == 0x9123683e /* btrfs */ |
3708 | || sfs.f_type == 0x52654973 /* reiser3 */ |
4037 | || sfs.f_type == 0x52654973 /* reiser3 */ |
3709 | || sfs.f_type == 0x01021994 /* tempfs */ |
4038 | || sfs.f_type == 0x01021994 /* tmpfs */ |
3710 | || sfs.f_type == 0x58465342 /* xfs */)) |
4039 | || sfs.f_type == 0x58465342 /* xfs */)) |
3711 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
4040 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
3712 | else |
4041 | else |
3713 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
4042 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
3714 | } |
4043 | } |