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 | * |
… | |
… | |
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 |
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|
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 |
261 | # endif |
258 | # endif |
262 | #endif |
259 | #endif |
… | |
… | |
355 | # define EV_USE_4HEAP EV_FEATURE_DATA |
352 | # define EV_USE_4HEAP EV_FEATURE_DATA |
356 | #endif |
353 | #endif |
357 | |
354 | |
358 | #ifndef EV_HEAP_CACHE_AT |
355 | #ifndef EV_HEAP_CACHE_AT |
359 | # define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
356 | # define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
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|
357 | #endif |
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|
358 | |
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|
359 | #ifdef ANDROID |
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|
360 | /* supposedly, android doesn't typedef fd_mask */ |
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|
361 | # undef EV_USE_SELECT |
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|
362 | # define EV_USE_SELECT 0 |
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|
363 | /* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ |
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364 | # undef EV_USE_CLOCK_SYSCALL |
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365 | # define EV_USE_CLOCK_SYSCALL 0 |
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|
366 | #endif |
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367 | |
|
|
368 | /* aix's poll.h seems to cause lots of trouble */ |
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|
369 | #ifdef _AIX |
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|
370 | /* AIX has a completely broken poll.h header */ |
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|
371 | # undef EV_USE_POLL |
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|
372 | # define EV_USE_POLL 0 |
360 | #endif |
373 | #endif |
361 | |
374 | |
362 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
375 | /* 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. */ |
376 | /* which makes programs even slower. might work on other unices, too. */ |
364 | #if EV_USE_CLOCK_SYSCALL |
377 | #if EV_USE_CLOCK_SYSCALL |
… | |
… | |
372 | # define EV_USE_CLOCK_SYSCALL 0 |
385 | # define EV_USE_CLOCK_SYSCALL 0 |
373 | # endif |
386 | # endif |
374 | #endif |
387 | #endif |
375 | |
388 | |
376 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
389 | /* 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 | |
390 | |
384 | #ifndef CLOCK_MONOTONIC |
391 | #ifndef CLOCK_MONOTONIC |
385 | # undef EV_USE_MONOTONIC |
392 | # undef EV_USE_MONOTONIC |
386 | # define EV_USE_MONOTONIC 0 |
393 | # define EV_USE_MONOTONIC 0 |
387 | #endif |
394 | #endif |
… | |
… | |
475 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
482 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
476 | /* ECB.H BEGIN */ |
483 | /* ECB.H BEGIN */ |
477 | /* |
484 | /* |
478 | * libecb - http://software.schmorp.de/pkg/libecb |
485 | * libecb - http://software.schmorp.de/pkg/libecb |
479 | * |
486 | * |
480 | * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> |
487 | * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de> |
481 | * Copyright (©) 2011 Emanuele Giaquinta |
488 | * Copyright (©) 2011 Emanuele Giaquinta |
482 | * All rights reserved. |
489 | * All rights reserved. |
483 | * |
490 | * |
484 | * Redistribution and use in source and binary forms, with or without modifica- |
491 | * Redistribution and use in source and binary forms, with or without modifica- |
485 | * tion, are permitted provided that the following conditions are met: |
492 | * tion, are permitted provided that the following conditions are met: |
… | |
… | |
504 | */ |
511 | */ |
505 | |
512 | |
506 | #ifndef ECB_H |
513 | #ifndef ECB_H |
507 | #define ECB_H |
514 | #define ECB_H |
508 | |
515 | |
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|
516 | /* 16 bits major, 16 bits minor */ |
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|
517 | #define ECB_VERSION 0x00010003 |
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|
518 | |
509 | #ifdef _WIN32 |
519 | #ifdef _WIN32 |
510 | typedef signed char int8_t; |
520 | typedef signed char int8_t; |
511 | typedef unsigned char uint8_t; |
521 | typedef unsigned char uint8_t; |
512 | typedef signed short int16_t; |
522 | typedef signed short int16_t; |
513 | typedef unsigned short uint16_t; |
523 | typedef unsigned short uint16_t; |
… | |
… | |
518 | typedef unsigned long long uint64_t; |
528 | typedef unsigned long long uint64_t; |
519 | #else /* _MSC_VER || __BORLANDC__ */ |
529 | #else /* _MSC_VER || __BORLANDC__ */ |
520 | typedef signed __int64 int64_t; |
530 | typedef signed __int64 int64_t; |
521 | typedef unsigned __int64 uint64_t; |
531 | typedef unsigned __int64 uint64_t; |
522 | #endif |
532 | #endif |
|
|
533 | #ifdef _WIN64 |
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|
534 | #define ECB_PTRSIZE 8 |
|
|
535 | typedef uint64_t uintptr_t; |
|
|
536 | typedef int64_t intptr_t; |
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|
537 | #else |
|
|
538 | #define ECB_PTRSIZE 4 |
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|
539 | typedef uint32_t uintptr_t; |
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|
540 | typedef int32_t intptr_t; |
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|
541 | #endif |
523 | #else |
542 | #else |
524 | #include <inttypes.h> |
543 | #include <inttypes.h> |
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|
544 | #if UINTMAX_MAX > 0xffffffffU |
|
|
545 | #define ECB_PTRSIZE 8 |
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|
546 | #else |
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|
547 | #define ECB_PTRSIZE 4 |
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|
548 | #endif |
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|
549 | #endif |
|
|
550 | |
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|
551 | /* work around x32 idiocy by defining proper macros */ |
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|
552 | #if __amd64 || __x86_64 || _M_AMD64 || _M_X64 |
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|
553 | #if _ILP32 |
|
|
554 | #define ECB_AMD64_X32 1 |
|
|
555 | #else |
|
|
556 | #define ECB_AMD64 1 |
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|
557 | #endif |
525 | #endif |
558 | #endif |
526 | |
559 | |
527 | /* many compilers define _GNUC_ to some versions but then only implement |
560 | /* many compilers define _GNUC_ to some versions but then only implement |
528 | * what their idiot authors think are the "more important" extensions, |
561 | * what their idiot authors think are the "more important" extensions, |
529 | * causing enormous grief in return for some better fake benchmark numbers. |
562 | * causing enormous grief in return for some better fake benchmark numbers. |
… | |
… | |
537 | #else |
570 | #else |
538 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
571 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
539 | #endif |
572 | #endif |
540 | #endif |
573 | #endif |
541 | |
574 | |
|
|
575 | #define ECB_CPP (__cplusplus+0) |
|
|
576 | #define ECB_CPP11 (__cplusplus >= 201103L) |
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|
577 | |
|
|
578 | #if ECB_CPP |
|
|
579 | #define ECB_C 0 |
|
|
580 | #define ECB_STDC_VERSION 0 |
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|
581 | #else |
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|
582 | #define ECB_C 1 |
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|
583 | #define ECB_STDC_VERSION __STDC_VERSION__ |
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|
584 | #endif |
|
|
585 | |
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|
586 | #define ECB_C99 (ECB_STDC_VERSION >= 199901L) |
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|
587 | #define ECB_C11 (ECB_STDC_VERSION >= 201112L) |
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|
588 | |
|
|
589 | #if ECB_CPP |
|
|
590 | #define ECB_EXTERN_C extern "C" |
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|
591 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
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|
592 | #define ECB_EXTERN_C_END } |
|
|
593 | #else |
|
|
594 | #define ECB_EXTERN_C extern |
|
|
595 | #define ECB_EXTERN_C_BEG |
|
|
596 | #define ECB_EXTERN_C_END |
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|
597 | #endif |
|
|
598 | |
542 | /*****************************************************************************/ |
599 | /*****************************************************************************/ |
543 | |
600 | |
544 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
601 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
545 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
602 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
546 | |
603 | |
547 | #if ECB_NO_THREADS |
604 | #if ECB_NO_THREADS |
548 | # define ECB_NO_SMP 1 |
605 | #define ECB_NO_SMP 1 |
549 | #endif |
606 | #endif |
550 | |
607 | |
551 | #if ECB_NO_THREADS || ECB_NO_SMP |
608 | #if ECB_NO_SMP |
552 | #define ECB_MEMORY_FENCE do { } while (0) |
609 | #define ECB_MEMORY_FENCE do { } while (0) |
553 | #endif |
610 | #endif |
554 | |
611 | |
555 | #ifndef ECB_MEMORY_FENCE |
612 | #ifndef ECB_MEMORY_FENCE |
556 | #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
613 | #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
557 | #if __i386 || __i386__ |
614 | #if __i386 || __i386__ |
558 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
615 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
559 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ |
616 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
560 | #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ |
617 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
561 | #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ |
618 | #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ |
562 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
619 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
563 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") |
620 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
564 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ |
621 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
565 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
622 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
566 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
623 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
567 | #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ |
624 | #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ |
568 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
625 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
569 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
626 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
570 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
627 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
571 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
628 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
572 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
629 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
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|
630 | #elif __aarch64__ |
|
|
631 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") |
573 | #elif __sparc || __sparc__ |
632 | #elif (__sparc || __sparc__) && !__sparcv8 |
574 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") |
633 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
575 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
634 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
576 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
635 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
577 | #elif defined __s390__ || defined __s390x__ |
636 | #elif defined __s390__ || defined __s390x__ |
578 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
637 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
579 | #elif defined __mips__ |
638 | #elif defined __mips__ |
|
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639 | /* GNU/Linux emulates sync on mips1 architectures, so we force its use */ |
|
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640 | /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */ |
580 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
641 | #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory") |
581 | #elif defined __alpha__ |
642 | #elif defined __alpha__ |
582 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
643 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
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|
644 | #elif defined __hppa__ |
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645 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
646 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
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|
647 | #elif defined __ia64__ |
|
|
648 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
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|
649 | #elif defined __m68k__ |
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|
650 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
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651 | #elif defined __m88k__ |
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|
652 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory") |
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653 | #elif defined __sh__ |
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654 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
583 | #endif |
655 | #endif |
584 | #endif |
656 | #endif |
585 | #endif |
657 | #endif |
586 | |
658 | |
587 | #ifndef ECB_MEMORY_FENCE |
659 | #ifndef ECB_MEMORY_FENCE |
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|
660 | #if ECB_GCC_VERSION(4,7) |
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661 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
|
|
662 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
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663 | #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
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|
664 | #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) |
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665 | |
|
|
666 | /* The __has_feature syntax from clang is so misdesigned that we cannot use it |
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667 | * without risking compile time errors with other compilers. We *could* |
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668 | * define our own ecb_clang_has_feature, but I just can't be bothered to work |
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669 | * around this shit time and again. |
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670 | * #elif defined __clang && __has_feature (cxx_atomic) |
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671 | * // see comment below (stdatomic.h) about the C11 memory model. |
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|
672 | * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
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673 | * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
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674 | * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
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|
675 | */ |
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|
676 | |
588 | #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
677 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
589 | #define ECB_MEMORY_FENCE __sync_synchronize () |
678 | #define ECB_MEMORY_FENCE __sync_synchronize () |
590 | /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ |
679 | #elif _MSC_VER >= 1500 /* VC++ 2008 */ |
591 | /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ |
680 | /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ |
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|
681 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
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|
682 | #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier() |
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|
683 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
684 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier() |
592 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
685 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
593 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
686 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
594 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
687 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
595 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
688 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
596 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
689 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
… | |
… | |
606 | #define ECB_MEMORY_FENCE __sync () |
699 | #define ECB_MEMORY_FENCE __sync () |
607 | #endif |
700 | #endif |
608 | #endif |
701 | #endif |
609 | |
702 | |
610 | #ifndef ECB_MEMORY_FENCE |
703 | #ifndef ECB_MEMORY_FENCE |
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704 | #if ECB_C11 && !defined __STDC_NO_ATOMICS__ |
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705 | /* we assume that these memory fences work on all variables/all memory accesses, */ |
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706 | /* not just C11 atomics and atomic accesses */ |
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|
707 | #include <stdatomic.h> |
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708 | /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */ |
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709 | /* any fence other than seq_cst, which isn't very efficient for us. */ |
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710 | /* Why that is, we don't know - either the C11 memory model is quite useless */ |
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711 | /* for most usages, or gcc and clang have a bug */ |
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712 | /* I *currently* lean towards the latter, and inefficiently implement */ |
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713 | /* all three of ecb's fences as a seq_cst fence */ |
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714 | /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */ |
|
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715 | /* for all __atomic_thread_fence's except seq_cst */ |
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|
716 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
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|
717 | #endif |
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|
718 | #endif |
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719 | |
|
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720 | #ifndef ECB_MEMORY_FENCE |
611 | #if !ECB_AVOID_PTHREADS |
721 | #if !ECB_AVOID_PTHREADS |
612 | /* |
722 | /* |
613 | * if you get undefined symbol references to pthread_mutex_lock, |
723 | * if you get undefined symbol references to pthread_mutex_lock, |
614 | * or failure to find pthread.h, then you should implement |
724 | * or failure to find pthread.h, then you should implement |
615 | * the ECB_MEMORY_FENCE operations for your cpu/compiler |
725 | * the ECB_MEMORY_FENCE operations for your cpu/compiler |
… | |
… | |
633 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
743 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
634 | #endif |
744 | #endif |
635 | |
745 | |
636 | /*****************************************************************************/ |
746 | /*****************************************************************************/ |
637 | |
747 | |
638 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
|
|
639 | |
|
|
640 | #if __cplusplus |
748 | #if __cplusplus |
641 | #define ecb_inline static inline |
749 | #define ecb_inline static inline |
642 | #elif ECB_GCC_VERSION(2,5) |
750 | #elif ECB_GCC_VERSION(2,5) |
643 | #define ecb_inline static __inline__ |
751 | #define ecb_inline static __inline__ |
644 | #elif ECB_C99 |
752 | #elif ECB_C99 |
… | |
… | |
669 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
777 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
670 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
778 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
671 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
779 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
672 | #else |
780 | #else |
673 | #define ecb_attribute(attrlist) |
781 | #define ecb_attribute(attrlist) |
|
|
782 | |
|
|
783 | /* possible C11 impl for integral types |
|
|
784 | typedef struct ecb_is_constant_struct ecb_is_constant_struct; |
|
|
785 | #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ |
|
|
786 | |
674 | #define ecb_is_constant(expr) 0 |
787 | #define ecb_is_constant(expr) 0 |
675 | #define ecb_expect(expr,value) (expr) |
788 | #define ecb_expect(expr,value) (expr) |
676 | #define ecb_prefetch(addr,rw,locality) |
789 | #define ecb_prefetch(addr,rw,locality) |
677 | #endif |
790 | #endif |
678 | |
791 | |
… | |
… | |
682 | #elif ECB_GCC_VERSION(3,0) |
795 | #elif ECB_GCC_VERSION(3,0) |
683 | #define ecb_decltype(x) __typeof(x) |
796 | #define ecb_decltype(x) __typeof(x) |
684 | #endif |
797 | #endif |
685 | |
798 | |
686 | #define ecb_noinline ecb_attribute ((__noinline__)) |
799 | #define ecb_noinline ecb_attribute ((__noinline__)) |
687 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
|
|
688 | #define ecb_unused ecb_attribute ((__unused__)) |
800 | #define ecb_unused ecb_attribute ((__unused__)) |
689 | #define ecb_const ecb_attribute ((__const__)) |
801 | #define ecb_const ecb_attribute ((__const__)) |
690 | #define ecb_pure ecb_attribute ((__pure__)) |
802 | #define ecb_pure ecb_attribute ((__pure__)) |
|
|
803 | |
|
|
804 | #if ECB_C11 |
|
|
805 | #define ecb_noreturn _Noreturn |
|
|
806 | #else |
|
|
807 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
|
|
808 | #endif |
691 | |
809 | |
692 | #if ECB_GCC_VERSION(4,3) |
810 | #if ECB_GCC_VERSION(4,3) |
693 | #define ecb_artificial ecb_attribute ((__artificial__)) |
811 | #define ecb_artificial ecb_attribute ((__artificial__)) |
694 | #define ecb_hot ecb_attribute ((__hot__)) |
812 | #define ecb_hot ecb_attribute ((__hot__)) |
695 | #define ecb_cold ecb_attribute ((__cold__)) |
813 | #define ecb_cold ecb_attribute ((__cold__)) |
… | |
… | |
786 | |
904 | |
787 | return r + ecb_ld32 (x); |
905 | return r + ecb_ld32 (x); |
788 | } |
906 | } |
789 | #endif |
907 | #endif |
790 | |
908 | |
|
|
909 | ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; |
|
|
910 | ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } |
|
|
911 | ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; |
|
|
912 | ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } |
|
|
913 | |
791 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; |
914 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; |
792 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) |
915 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) |
793 | { |
916 | { |
794 | return ( (x * 0x0802U & 0x22110U) |
917 | return ( (x * 0x0802U & 0x22110U) |
795 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
918 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
… | |
… | |
879 | ecb_inline void ecb_unreachable (void) ecb_noreturn; |
1002 | ecb_inline void ecb_unreachable (void) ecb_noreturn; |
880 | ecb_inline void ecb_unreachable (void) { } |
1003 | ecb_inline void ecb_unreachable (void) { } |
881 | #endif |
1004 | #endif |
882 | |
1005 | |
883 | /* try to tell the compiler that some condition is definitely true */ |
1006 | /* try to tell the compiler that some condition is definitely true */ |
884 | #define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) |
1007 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
885 | |
1008 | |
886 | ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; |
1009 | ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; |
887 | ecb_inline unsigned char |
1010 | ecb_inline unsigned char |
888 | ecb_byteorder_helper (void) |
1011 | ecb_byteorder_helper (void) |
889 | { |
1012 | { |
890 | const uint32_t u = 0x11223344; |
1013 | /* the union code still generates code under pressure in gcc, */ |
891 | return *(unsigned char *)&u; |
1014 | /* but less than using pointers, and always seems to */ |
|
|
1015 | /* successfully return a constant. */ |
|
|
1016 | /* the reason why we have this horrible preprocessor mess */ |
|
|
1017 | /* is to avoid it in all cases, at least on common architectures */ |
|
|
1018 | /* or when using a recent enough gcc version (>= 4.6) */ |
|
|
1019 | #if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64 |
|
|
1020 | return 0x44; |
|
|
1021 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ |
|
|
1022 | return 0x44; |
|
|
1023 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
|
|
1024 | return 0x11; |
|
|
1025 | #else |
|
|
1026 | union |
|
|
1027 | { |
|
|
1028 | uint32_t i; |
|
|
1029 | uint8_t c; |
|
|
1030 | } u = { 0x11223344 }; |
|
|
1031 | return u.c; |
|
|
1032 | #endif |
892 | } |
1033 | } |
893 | |
1034 | |
894 | ecb_inline ecb_bool ecb_big_endian (void) ecb_const; |
1035 | ecb_inline ecb_bool ecb_big_endian (void) ecb_const; |
895 | ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
1036 | ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
896 | ecb_inline ecb_bool ecb_little_endian (void) ecb_const; |
1037 | ecb_inline ecb_bool ecb_little_endian (void) ecb_const; |
… | |
… | |
927 | } |
1068 | } |
928 | #else |
1069 | #else |
929 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
1070 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
930 | #endif |
1071 | #endif |
931 | |
1072 | |
|
|
1073 | /*******************************************************************************/ |
|
|
1074 | /* floating point stuff, can be disabled by defining ECB_NO_LIBM */ |
|
|
1075 | |
|
|
1076 | /* basically, everything uses "ieee pure-endian" floating point numbers */ |
|
|
1077 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
|
|
1078 | #if 0 \ |
|
|
1079 | || __i386 || __i386__ \ |
|
|
1080 | || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ |
|
|
1081 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
|
|
1082 | || defined __s390__ || defined __s390x__ \ |
|
|
1083 | || defined __mips__ \ |
|
|
1084 | || defined __alpha__ \ |
|
|
1085 | || defined __hppa__ \ |
|
|
1086 | || defined __ia64__ \ |
|
|
1087 | || defined __m68k__ \ |
|
|
1088 | || defined __m88k__ \ |
|
|
1089 | || defined __sh__ \ |
|
|
1090 | || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \ |
|
|
1091 | || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ |
|
|
1092 | | defined __aarch64__ |
|
|
1093 | #define ECB_STDFP 1 |
|
|
1094 | #include <string.h> /* for memcpy */ |
|
|
1095 | #else |
|
|
1096 | #define ECB_STDFP 0 |
|
|
1097 | #endif |
|
|
1098 | |
|
|
1099 | #ifndef ECB_NO_LIBM |
|
|
1100 | |
|
|
1101 | #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ |
|
|
1102 | |
|
|
1103 | /* only the oldest of old doesn't have this one. solaris. */ |
|
|
1104 | #ifdef INFINITY |
|
|
1105 | #define ECB_INFINITY INFINITY |
|
|
1106 | #else |
|
|
1107 | #define ECB_INFINITY HUGE_VAL |
|
|
1108 | #endif |
|
|
1109 | |
|
|
1110 | #ifdef NAN |
|
|
1111 | #define ECB_NAN NAN |
|
|
1112 | #else |
|
|
1113 | #define ECB_NAN ECB_INFINITY |
|
|
1114 | #endif |
|
|
1115 | |
|
|
1116 | /* converts an ieee half/binary16 to a float */ |
|
|
1117 | ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; |
|
|
1118 | ecb_function_ float |
|
|
1119 | ecb_binary16_to_float (uint16_t x) |
|
|
1120 | { |
|
|
1121 | int e = (x >> 10) & 0x1f; |
|
|
1122 | int m = x & 0x3ff; |
|
|
1123 | float r; |
|
|
1124 | |
|
|
1125 | if (!e ) r = ldexpf (m , -24); |
|
|
1126 | else if (e != 31) r = ldexpf (m + 0x400, e - 25); |
|
|
1127 | else if (m ) r = ECB_NAN; |
|
|
1128 | else r = ECB_INFINITY; |
|
|
1129 | |
|
|
1130 | return x & 0x8000 ? -r : r; |
|
|
1131 | } |
|
|
1132 | |
|
|
1133 | /* convert a float to ieee single/binary32 */ |
|
|
1134 | ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; |
|
|
1135 | ecb_function_ uint32_t |
|
|
1136 | ecb_float_to_binary32 (float x) |
|
|
1137 | { |
|
|
1138 | uint32_t r; |
|
|
1139 | |
|
|
1140 | #if ECB_STDFP |
|
|
1141 | memcpy (&r, &x, 4); |
|
|
1142 | #else |
|
|
1143 | /* slow emulation, works for anything but -0 */ |
|
|
1144 | uint32_t m; |
|
|
1145 | int e; |
|
|
1146 | |
|
|
1147 | if (x == 0e0f ) return 0x00000000U; |
|
|
1148 | if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
|
|
1149 | if (x < -3.40282346638528860e+38f) return 0xff800000U; |
|
|
1150 | if (x != x ) return 0x7fbfffffU; |
|
|
1151 | |
|
|
1152 | m = frexpf (x, &e) * 0x1000000U; |
|
|
1153 | |
|
|
1154 | r = m & 0x80000000U; |
|
|
1155 | |
|
|
1156 | if (r) |
|
|
1157 | m = -m; |
|
|
1158 | |
|
|
1159 | if (e <= -126) |
|
|
1160 | { |
|
|
1161 | m &= 0xffffffU; |
|
|
1162 | m >>= (-125 - e); |
|
|
1163 | e = -126; |
|
|
1164 | } |
|
|
1165 | |
|
|
1166 | r |= (e + 126) << 23; |
|
|
1167 | r |= m & 0x7fffffU; |
|
|
1168 | #endif |
|
|
1169 | |
|
|
1170 | return r; |
|
|
1171 | } |
|
|
1172 | |
|
|
1173 | /* converts an ieee single/binary32 to a float */ |
|
|
1174 | ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const; |
|
|
1175 | ecb_function_ float |
|
|
1176 | ecb_binary32_to_float (uint32_t x) |
|
|
1177 | { |
|
|
1178 | float r; |
|
|
1179 | |
|
|
1180 | #if ECB_STDFP |
|
|
1181 | memcpy (&r, &x, 4); |
|
|
1182 | #else |
|
|
1183 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1184 | int neg = x >> 31; |
|
|
1185 | int e = (x >> 23) & 0xffU; |
|
|
1186 | |
|
|
1187 | x &= 0x7fffffU; |
|
|
1188 | |
|
|
1189 | if (e) |
|
|
1190 | x |= 0x800000U; |
|
|
1191 | else |
|
|
1192 | e = 1; |
|
|
1193 | |
|
|
1194 | /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ |
|
|
1195 | r = ldexpf (x * (0.5f / 0x800000U), e - 126); |
|
|
1196 | |
|
|
1197 | r = neg ? -r : r; |
|
|
1198 | #endif |
|
|
1199 | |
|
|
1200 | return r; |
|
|
1201 | } |
|
|
1202 | |
|
|
1203 | /* convert a double to ieee double/binary64 */ |
|
|
1204 | ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const; |
|
|
1205 | ecb_function_ uint64_t |
|
|
1206 | ecb_double_to_binary64 (double x) |
|
|
1207 | { |
|
|
1208 | uint64_t r; |
|
|
1209 | |
|
|
1210 | #if ECB_STDFP |
|
|
1211 | memcpy (&r, &x, 8); |
|
|
1212 | #else |
|
|
1213 | /* slow emulation, works for anything but -0 */ |
|
|
1214 | uint64_t m; |
|
|
1215 | int e; |
|
|
1216 | |
|
|
1217 | if (x == 0e0 ) return 0x0000000000000000U; |
|
|
1218 | if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U; |
|
|
1219 | if (x < -1.79769313486231470e+308) return 0xfff0000000000000U; |
|
|
1220 | if (x != x ) return 0X7ff7ffffffffffffU; |
|
|
1221 | |
|
|
1222 | m = frexp (x, &e) * 0x20000000000000U; |
|
|
1223 | |
|
|
1224 | r = m & 0x8000000000000000;; |
|
|
1225 | |
|
|
1226 | if (r) |
|
|
1227 | m = -m; |
|
|
1228 | |
|
|
1229 | if (e <= -1022) |
|
|
1230 | { |
|
|
1231 | m &= 0x1fffffffffffffU; |
|
|
1232 | m >>= (-1021 - e); |
|
|
1233 | e = -1022; |
|
|
1234 | } |
|
|
1235 | |
|
|
1236 | r |= ((uint64_t)(e + 1022)) << 52; |
|
|
1237 | r |= m & 0xfffffffffffffU; |
|
|
1238 | #endif |
|
|
1239 | |
|
|
1240 | return r; |
|
|
1241 | } |
|
|
1242 | |
|
|
1243 | /* converts an ieee double/binary64 to a double */ |
|
|
1244 | ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const; |
|
|
1245 | ecb_function_ double |
|
|
1246 | ecb_binary64_to_double (uint64_t x) |
|
|
1247 | { |
|
|
1248 | double r; |
|
|
1249 | |
|
|
1250 | #if ECB_STDFP |
|
|
1251 | memcpy (&r, &x, 8); |
|
|
1252 | #else |
|
|
1253 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1254 | int neg = x >> 63; |
|
|
1255 | int e = (x >> 52) & 0x7ffU; |
|
|
1256 | |
|
|
1257 | x &= 0xfffffffffffffU; |
|
|
1258 | |
|
|
1259 | if (e) |
|
|
1260 | x |= 0x10000000000000U; |
|
|
1261 | else |
|
|
1262 | e = 1; |
|
|
1263 | |
|
|
1264 | /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */ |
|
|
1265 | r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022); |
|
|
1266 | |
|
|
1267 | r = neg ? -r : r; |
|
|
1268 | #endif |
|
|
1269 | |
|
|
1270 | return r; |
|
|
1271 | } |
|
|
1272 | |
|
|
1273 | #endif |
|
|
1274 | |
932 | #endif |
1275 | #endif |
933 | |
1276 | |
934 | /* ECB.H END */ |
1277 | /* ECB.H END */ |
935 | |
1278 | |
936 | #if ECB_MEMORY_FENCE_NEEDS_PTHREADS |
1279 | #if ECB_MEMORY_FENCE_NEEDS_PTHREADS |
… | |
… | |
1135 | } |
1478 | } |
1136 | |
1479 | |
1137 | static void * |
1480 | static void * |
1138 | ev_realloc_emul (void *ptr, long size) EV_THROW |
1481 | ev_realloc_emul (void *ptr, long size) EV_THROW |
1139 | { |
1482 | { |
1140 | #if __GLIBC__ |
|
|
1141 | return realloc (ptr, size); |
|
|
1142 | #else |
|
|
1143 | /* some systems, notably openbsd and darwin, fail to properly |
1483 | /* some systems, notably openbsd and darwin, fail to properly |
1144 | * implement realloc (x, 0) (as required by both ansi c-89 and |
1484 | * implement realloc (x, 0) (as required by both ansi c-89 and |
1145 | * the single unix specification, so work around them here. |
1485 | * the single unix specification, so work around them here. |
|
|
1486 | * recently, also (at least) fedora and debian started breaking it, |
|
|
1487 | * despite documenting it otherwise. |
1146 | */ |
1488 | */ |
1147 | |
1489 | |
1148 | if (size) |
1490 | if (size) |
1149 | return realloc (ptr, size); |
1491 | return realloc (ptr, size); |
1150 | |
1492 | |
1151 | free (ptr); |
1493 | free (ptr); |
1152 | return 0; |
1494 | return 0; |
1153 | #endif |
|
|
1154 | } |
1495 | } |
1155 | |
1496 | |
1156 | static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; |
1497 | static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; |
1157 | |
1498 | |
1158 | void ecb_cold |
1499 | void ecb_cold |
… | |
… | |
1813 | static void noinline ecb_cold |
2154 | static void noinline ecb_cold |
1814 | evpipe_init (EV_P) |
2155 | evpipe_init (EV_P) |
1815 | { |
2156 | { |
1816 | if (!ev_is_active (&pipe_w)) |
2157 | if (!ev_is_active (&pipe_w)) |
1817 | { |
2158 | { |
|
|
2159 | int fds [2]; |
|
|
2160 | |
1818 | # if EV_USE_EVENTFD |
2161 | # if EV_USE_EVENTFD |
|
|
2162 | fds [0] = -1; |
1819 | evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
2163 | fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
1820 | if (evfd < 0 && errno == EINVAL) |
2164 | if (fds [1] < 0 && errno == EINVAL) |
1821 | evfd = eventfd (0, 0); |
2165 | fds [1] = eventfd (0, 0); |
1822 | |
2166 | |
1823 | if (evfd >= 0) |
2167 | if (fds [1] < 0) |
1824 | { |
|
|
1825 | evpipe [0] = -1; |
|
|
1826 | fd_intern (evfd); /* doing it twice doesn't hurt */ |
|
|
1827 | ev_io_set (&pipe_w, evfd, EV_READ); |
|
|
1828 | } |
|
|
1829 | else |
|
|
1830 | # endif |
2168 | # endif |
1831 | { |
2169 | { |
1832 | while (pipe (evpipe)) |
2170 | while (pipe (fds)) |
1833 | ev_syserr ("(libev) error creating signal/async pipe"); |
2171 | ev_syserr ("(libev) error creating signal/async pipe"); |
1834 | |
2172 | |
1835 | fd_intern (evpipe [0]); |
2173 | fd_intern (fds [0]); |
1836 | fd_intern (evpipe [1]); |
|
|
1837 | ev_io_set (&pipe_w, evpipe [0], EV_READ); |
|
|
1838 | } |
2174 | } |
1839 | |
2175 | |
|
|
2176 | evpipe [0] = fds [0]; |
|
|
2177 | |
|
|
2178 | if (evpipe [1] < 0) |
|
|
2179 | evpipe [1] = fds [1]; /* first call, set write fd */ |
|
|
2180 | else |
|
|
2181 | { |
|
|
2182 | /* on subsequent calls, do not change evpipe [1] */ |
|
|
2183 | /* so that evpipe_write can always rely on its value. */ |
|
|
2184 | /* this branch does not do anything sensible on windows, */ |
|
|
2185 | /* so must not be executed on windows */ |
|
|
2186 | |
|
|
2187 | dup2 (fds [1], evpipe [1]); |
|
|
2188 | close (fds [1]); |
|
|
2189 | } |
|
|
2190 | |
|
|
2191 | fd_intern (evpipe [1]); |
|
|
2192 | |
|
|
2193 | ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ); |
1840 | ev_io_start (EV_A_ &pipe_w); |
2194 | ev_io_start (EV_A_ &pipe_w); |
1841 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
2195 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
1842 | } |
2196 | } |
1843 | } |
2197 | } |
1844 | |
2198 | |
… | |
… | |
1865 | ECB_MEMORY_FENCE_RELEASE; |
2219 | ECB_MEMORY_FENCE_RELEASE; |
1866 | |
2220 | |
1867 | old_errno = errno; /* save errno because write will clobber it */ |
2221 | old_errno = errno; /* save errno because write will clobber it */ |
1868 | |
2222 | |
1869 | #if EV_USE_EVENTFD |
2223 | #if EV_USE_EVENTFD |
1870 | if (evfd >= 0) |
2224 | if (evpipe [0] < 0) |
1871 | { |
2225 | { |
1872 | uint64_t counter = 1; |
2226 | uint64_t counter = 1; |
1873 | write (evfd, &counter, sizeof (uint64_t)); |
2227 | write (evpipe [1], &counter, sizeof (uint64_t)); |
1874 | } |
2228 | } |
1875 | else |
2229 | else |
1876 | #endif |
2230 | #endif |
1877 | { |
2231 | { |
1878 | #ifdef _WIN32 |
2232 | #ifdef _WIN32 |
… | |
… | |
1898 | int i; |
2252 | int i; |
1899 | |
2253 | |
1900 | if (revents & EV_READ) |
2254 | if (revents & EV_READ) |
1901 | { |
2255 | { |
1902 | #if EV_USE_EVENTFD |
2256 | #if EV_USE_EVENTFD |
1903 | if (evfd >= 0) |
2257 | if (evpipe [0] < 0) |
1904 | { |
2258 | { |
1905 | uint64_t counter; |
2259 | uint64_t counter; |
1906 | read (evfd, &counter, sizeof (uint64_t)); |
2260 | read (evpipe [1], &counter, sizeof (uint64_t)); |
1907 | } |
2261 | } |
1908 | else |
2262 | else |
1909 | #endif |
2263 | #endif |
1910 | { |
2264 | { |
1911 | char dummy[4]; |
2265 | char dummy[4]; |
… | |
… | |
1961 | |
2315 | |
1962 | void |
2316 | void |
1963 | ev_feed_signal (int signum) EV_THROW |
2317 | ev_feed_signal (int signum) EV_THROW |
1964 | { |
2318 | { |
1965 | #if EV_MULTIPLICITY |
2319 | #if EV_MULTIPLICITY |
|
|
2320 | EV_P; |
|
|
2321 | ECB_MEMORY_FENCE_ACQUIRE; |
1966 | EV_P = signals [signum - 1].loop; |
2322 | EV_A = signals [signum - 1].loop; |
1967 | |
2323 | |
1968 | if (!EV_A) |
2324 | if (!EV_A) |
1969 | return; |
2325 | return; |
1970 | #endif |
2326 | #endif |
1971 | |
2327 | |
1972 | if (!ev_active (&pipe_w)) |
|
|
1973 | return; |
|
|
1974 | |
|
|
1975 | signals [signum - 1].pending = 1; |
2328 | signals [signum - 1].pending = 1; |
1976 | evpipe_write (EV_A_ &sig_pending); |
2329 | evpipe_write (EV_A_ &sig_pending); |
1977 | } |
2330 | } |
1978 | |
2331 | |
1979 | static void |
2332 | static void |
… | |
… | |
1989 | void noinline |
2342 | void noinline |
1990 | ev_feed_signal_event (EV_P_ int signum) EV_THROW |
2343 | ev_feed_signal_event (EV_P_ int signum) EV_THROW |
1991 | { |
2344 | { |
1992 | WL w; |
2345 | WL w; |
1993 | |
2346 | |
1994 | if (expect_false (signum <= 0 || signum > EV_NSIG)) |
2347 | if (expect_false (signum <= 0 || signum >= EV_NSIG)) |
1995 | return; |
2348 | return; |
1996 | |
2349 | |
1997 | --signum; |
2350 | --signum; |
1998 | |
2351 | |
1999 | #if EV_MULTIPLICITY |
2352 | #if EV_MULTIPLICITY |
… | |
… | |
2003 | if (expect_false (signals [signum].loop != EV_A)) |
2356 | if (expect_false (signals [signum].loop != EV_A)) |
2004 | return; |
2357 | return; |
2005 | #endif |
2358 | #endif |
2006 | |
2359 | |
2007 | signals [signum].pending = 0; |
2360 | signals [signum].pending = 0; |
2008 | MEMORY_FENCE_RELEASE; |
2361 | ECB_MEMORY_FENCE_RELEASE; |
2009 | |
2362 | |
2010 | for (w = signals [signum].head; w; w = w->next) |
2363 | for (w = signals [signum].head; w; w = w->next) |
2011 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
2364 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
2012 | } |
2365 | } |
2013 | |
2366 | |
… | |
… | |
2227 | { |
2580 | { |
2228 | return userdata; |
2581 | return userdata; |
2229 | } |
2582 | } |
2230 | |
2583 | |
2231 | void |
2584 | void |
2232 | ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW |
2585 | ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW |
2233 | { |
2586 | { |
2234 | invoke_cb = invoke_pending_cb; |
2587 | invoke_cb = invoke_pending_cb; |
2235 | } |
2588 | } |
2236 | |
2589 | |
2237 | void |
2590 | void |
2238 | ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW |
2591 | ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW |
2239 | { |
2592 | { |
2240 | release_cb = release; |
2593 | release_cb = release; |
2241 | acquire_cb = acquire; |
2594 | acquire_cb = acquire; |
2242 | } |
2595 | } |
2243 | #endif |
2596 | #endif |
… | |
… | |
2297 | #if EV_ASYNC_ENABLE |
2650 | #if EV_ASYNC_ENABLE |
2298 | async_pending = 0; |
2651 | async_pending = 0; |
2299 | #endif |
2652 | #endif |
2300 | pipe_write_skipped = 0; |
2653 | pipe_write_skipped = 0; |
2301 | pipe_write_wanted = 0; |
2654 | pipe_write_wanted = 0; |
|
|
2655 | evpipe [0] = -1; |
|
|
2656 | evpipe [1] = -1; |
2302 | #if EV_USE_INOTIFY |
2657 | #if EV_USE_INOTIFY |
2303 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
2658 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
2304 | #endif |
2659 | #endif |
2305 | #if EV_USE_SIGNALFD |
2660 | #if EV_USE_SIGNALFD |
2306 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
2661 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
… | |
… | |
2369 | if (ev_is_active (&pipe_w)) |
2724 | if (ev_is_active (&pipe_w)) |
2370 | { |
2725 | { |
2371 | /*ev_ref (EV_A);*/ |
2726 | /*ev_ref (EV_A);*/ |
2372 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
2727 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
2373 | |
2728 | |
2374 | #if EV_USE_EVENTFD |
|
|
2375 | if (evfd >= 0) |
|
|
2376 | close (evfd); |
|
|
2377 | #endif |
|
|
2378 | |
|
|
2379 | if (evpipe [0] >= 0) |
|
|
2380 | { |
|
|
2381 | EV_WIN32_CLOSE_FD (evpipe [0]); |
2729 | if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]); |
2382 | EV_WIN32_CLOSE_FD (evpipe [1]); |
2730 | if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]); |
2383 | } |
|
|
2384 | } |
2731 | } |
2385 | |
2732 | |
2386 | #if EV_USE_SIGNALFD |
2733 | #if EV_USE_SIGNALFD |
2387 | if (ev_is_active (&sigfd_w)) |
2734 | if (ev_is_active (&sigfd_w)) |
2388 | close (sigfd); |
2735 | close (sigfd); |
… | |
… | |
2474 | #endif |
2821 | #endif |
2475 | #if EV_USE_INOTIFY |
2822 | #if EV_USE_INOTIFY |
2476 | infy_fork (EV_A); |
2823 | infy_fork (EV_A); |
2477 | #endif |
2824 | #endif |
2478 | |
2825 | |
|
|
2826 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
2479 | if (ev_is_active (&pipe_w)) |
2827 | if (ev_is_active (&pipe_w)) |
2480 | { |
2828 | { |
2481 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
2829 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
2482 | |
2830 | |
2483 | ev_ref (EV_A); |
2831 | ev_ref (EV_A); |
2484 | ev_io_stop (EV_A_ &pipe_w); |
2832 | ev_io_stop (EV_A_ &pipe_w); |
2485 | |
2833 | |
2486 | #if EV_USE_EVENTFD |
|
|
2487 | if (evfd >= 0) |
|
|
2488 | close (evfd); |
|
|
2489 | #endif |
|
|
2490 | |
|
|
2491 | if (evpipe [0] >= 0) |
2834 | if (evpipe [0] >= 0) |
2492 | { |
|
|
2493 | EV_WIN32_CLOSE_FD (evpipe [0]); |
2835 | EV_WIN32_CLOSE_FD (evpipe [0]); |
2494 | EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
2495 | } |
|
|
2496 | |
2836 | |
2497 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
2498 | evpipe_init (EV_A); |
2837 | evpipe_init (EV_A); |
2499 | /* now iterate over everything, in case we missed something */ |
2838 | /* iterate over everything, in case we missed something before */ |
2500 | pipecb (EV_A_ &pipe_w, EV_READ); |
2839 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
2501 | #endif |
|
|
2502 | } |
2840 | } |
|
|
2841 | #endif |
2503 | |
2842 | |
2504 | postfork = 0; |
2843 | postfork = 0; |
2505 | } |
2844 | } |
2506 | |
2845 | |
2507 | #if EV_MULTIPLICITY |
2846 | #if EV_MULTIPLICITY |
… | |
… | |
2680 | } |
3019 | } |
2681 | |
3020 | |
2682 | void |
3021 | void |
2683 | ev_loop_fork (EV_P) EV_THROW |
3022 | ev_loop_fork (EV_P) EV_THROW |
2684 | { |
3023 | { |
2685 | postfork = 1; /* must be in line with ev_default_fork */ |
3024 | postfork = 1; |
2686 | } |
3025 | } |
2687 | |
3026 | |
2688 | /*****************************************************************************/ |
3027 | /*****************************************************************************/ |
2689 | |
3028 | |
2690 | void |
3029 | void |
… | |
… | |
2706 | } |
3045 | } |
2707 | |
3046 | |
2708 | void noinline |
3047 | void noinline |
2709 | ev_invoke_pending (EV_P) |
3048 | ev_invoke_pending (EV_P) |
2710 | { |
3049 | { |
2711 | for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */ |
3050 | pendingpri = NUMPRI; |
|
|
3051 | |
|
|
3052 | while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ |
|
|
3053 | { |
|
|
3054 | --pendingpri; |
|
|
3055 | |
2712 | while (pendingcnt [pendingpri]) |
3056 | while (pendingcnt [pendingpri]) |
2713 | { |
3057 | { |
2714 | ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; |
3058 | ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; |
2715 | |
3059 | |
2716 | p->w->pending = 0; |
3060 | p->w->pending = 0; |
2717 | EV_CB_INVOKE (p->w, p->events); |
3061 | EV_CB_INVOKE (p->w, p->events); |
2718 | EV_FREQUENT_CHECK; |
3062 | EV_FREQUENT_CHECK; |
2719 | } |
3063 | } |
|
|
3064 | } |
2720 | } |
3065 | } |
2721 | |
3066 | |
2722 | #if EV_IDLE_ENABLE |
3067 | #if EV_IDLE_ENABLE |
2723 | /* make idle watchers pending. this handles the "call-idle */ |
3068 | /* make idle watchers pending. this handles the "call-idle */ |
2724 | /* only when higher priorities are idle" logic */ |
3069 | /* only when higher priorities are idle" logic */ |
… | |
… | |
3082 | backend_poll (EV_A_ waittime); |
3427 | backend_poll (EV_A_ waittime); |
3083 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
3428 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
3084 | |
3429 | |
3085 | pipe_write_wanted = 0; /* just an optimisation, no fence needed */ |
3430 | pipe_write_wanted = 0; /* just an optimisation, no fence needed */ |
3086 | |
3431 | |
|
|
3432 | ECB_MEMORY_FENCE_ACQUIRE; |
3087 | if (pipe_write_skipped) |
3433 | if (pipe_write_skipped) |
3088 | { |
3434 | { |
3089 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
3435 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
3090 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
3436 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
3091 | } |
3437 | } |
… | |
… | |
3469 | #if EV_MULTIPLICITY |
3815 | #if EV_MULTIPLICITY |
3470 | assert (("libev: a signal must not be attached to two different loops", |
3816 | assert (("libev: a signal must not be attached to two different loops", |
3471 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
3817 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
3472 | |
3818 | |
3473 | signals [w->signum - 1].loop = EV_A; |
3819 | signals [w->signum - 1].loop = EV_A; |
|
|
3820 | ECB_MEMORY_FENCE_RELEASE; |
3474 | #endif |
3821 | #endif |
3475 | |
3822 | |
3476 | EV_FREQUENT_CHECK; |
3823 | EV_FREQUENT_CHECK; |
3477 | |
3824 | |
3478 | #if EV_USE_SIGNALFD |
3825 | #if EV_USE_SIGNALFD |
… | |
… | |
3633 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
3980 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
3634 | |
3981 | |
3635 | static void noinline |
3982 | static void noinline |
3636 | infy_add (EV_P_ ev_stat *w) |
3983 | infy_add (EV_P_ ev_stat *w) |
3637 | { |
3984 | { |
3638 | 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); |
3985 | w->wd = inotify_add_watch (fs_fd, w->path, |
|
|
3986 | IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY |
|
|
3987 | | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO |
|
|
3988 | | IN_DONT_FOLLOW | IN_MASK_ADD); |
3639 | |
3989 | |
3640 | if (w->wd >= 0) |
3990 | if (w->wd >= 0) |
3641 | { |
3991 | { |
3642 | struct statfs sfs; |
3992 | struct statfs sfs; |
3643 | |
3993 | |
… | |
… | |
3647 | |
3997 | |
3648 | if (!fs_2625) |
3998 | if (!fs_2625) |
3649 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
3999 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
3650 | else if (!statfs (w->path, &sfs) |
4000 | else if (!statfs (w->path, &sfs) |
3651 | && (sfs.f_type == 0x1373 /* devfs */ |
4001 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
4002 | || sfs.f_type == 0x4006 /* fat */ |
|
|
4003 | || sfs.f_type == 0x4d44 /* msdos */ |
3652 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
4004 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
4005 | || sfs.f_type == 0x72b6 /* jffs2 */ |
|
|
4006 | || sfs.f_type == 0x858458f6 /* ramfs */ |
|
|
4007 | || sfs.f_type == 0x5346544e /* ntfs */ |
3653 | || sfs.f_type == 0x3153464a /* jfs */ |
4008 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
4009 | || sfs.f_type == 0x9123683e /* btrfs */ |
3654 | || sfs.f_type == 0x52654973 /* reiser3 */ |
4010 | || sfs.f_type == 0x52654973 /* reiser3 */ |
3655 | || sfs.f_type == 0x01021994 /* tempfs */ |
4011 | || sfs.f_type == 0x01021994 /* tmpfs */ |
3656 | || sfs.f_type == 0x58465342 /* xfs */)) |
4012 | || sfs.f_type == 0x58465342 /* xfs */)) |
3657 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
4013 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
3658 | else |
4014 | else |
3659 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
4015 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
3660 | } |
4016 | } |