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 | * |
… | |
… | |
249 | #ifndef EV_USE_FLOOR |
249 | #ifndef EV_USE_FLOOR |
250 | # define EV_USE_FLOOR 0 |
250 | # define EV_USE_FLOOR 0 |
251 | #endif |
251 | #endif |
252 | |
252 | |
253 | #ifndef EV_USE_CLOCK_SYSCALL |
253 | #ifndef EV_USE_CLOCK_SYSCALL |
254 | # if __linux && __GLIBC__ >= 2 |
254 | # if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17 |
255 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
255 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
256 | # else |
256 | # else |
257 | # define EV_USE_CLOCK_SYSCALL 0 |
257 | # define EV_USE_CLOCK_SYSCALL 0 |
258 | # endif |
258 | # endif |
259 | #endif |
259 | #endif |
… | |
… | |
482 | /* 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 */ |
483 | /* ECB.H BEGIN */ |
483 | /* ECB.H BEGIN */ |
484 | /* |
484 | /* |
485 | * libecb - http://software.schmorp.de/pkg/libecb |
485 | * libecb - http://software.schmorp.de/pkg/libecb |
486 | * |
486 | * |
487 | * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> |
487 | * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de> |
488 | * Copyright (©) 2011 Emanuele Giaquinta |
488 | * Copyright (©) 2011 Emanuele Giaquinta |
489 | * All rights reserved. |
489 | * All rights reserved. |
490 | * |
490 | * |
491 | * 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- |
492 | * tion, are permitted provided that the following conditions are met: |
492 | * tion, are permitted provided that the following conditions are met: |
… | |
… | |
547 | #define ECB_PTRSIZE 4 |
547 | #define ECB_PTRSIZE 4 |
548 | #endif |
548 | #endif |
549 | #endif |
549 | #endif |
550 | |
550 | |
551 | /* work around x32 idiocy by defining proper macros */ |
551 | /* work around x32 idiocy by defining proper macros */ |
552 | #if __x86_64 || _M_AMD64 |
552 | #if __amd64 || __x86_64 || _M_AMD64 || _M_X64 |
553 | #if _ILP32 |
553 | #if _ILP32 |
554 | #define ECB_AMD64_X32 1 |
554 | #define ECB_AMD64_X32 1 |
555 | #else |
555 | #else |
556 | #define ECB_AMD64 1 |
556 | #define ECB_AMD64 1 |
557 | #endif |
557 | #endif |
… | |
… | |
570 | #else |
570 | #else |
571 | #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))) |
572 | #endif |
572 | #endif |
573 | #endif |
573 | #endif |
574 | |
574 | |
575 | #define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ |
|
|
576 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
|
|
577 | #define ECB_C11 (__STDC_VERSION__ >= 201112L) |
|
|
578 | #define ECB_CPP (__cplusplus+0) |
575 | #define ECB_CPP (__cplusplus+0) |
579 | #define ECB_CPP11 (__cplusplus >= 201103L) |
576 | #define ECB_CPP11 (__cplusplus >= 201103L) |
|
|
577 | |
|
|
578 | #if ECB_CPP |
|
|
579 | #define ECB_C 0 |
|
|
580 | #define ECB_STDC_VERSION 0 |
|
|
581 | #else |
|
|
582 | #define ECB_C 1 |
|
|
583 | #define ECB_STDC_VERSION __STDC_VERSION__ |
|
|
584 | #endif |
|
|
585 | |
|
|
586 | #define ECB_C99 (ECB_STDC_VERSION >= 199901L) |
|
|
587 | #define ECB_C11 (ECB_STDC_VERSION >= 201112L) |
580 | |
588 | |
581 | #if ECB_CPP |
589 | #if ECB_CPP |
582 | #define ECB_EXTERN_C extern "C" |
590 | #define ECB_EXTERN_C extern "C" |
583 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
591 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
584 | #define ECB_EXTERN_C_END } |
592 | #define ECB_EXTERN_C_END } |
… | |
… | |
617 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
625 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
618 | #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") |
619 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
627 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
620 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
628 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
621 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
629 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
|
|
630 | #elif __aarch64__ |
|
|
631 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") |
622 | #elif __sparc || __sparc__ |
632 | #elif (__sparc || __sparc__) && !__sparcv8 |
623 | #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") |
624 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
634 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
625 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
635 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
626 | #elif defined __s390__ || defined __s390x__ |
636 | #elif defined __s390__ || defined __s390x__ |
627 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
637 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
… | |
… | |
648 | |
658 | |
649 | #ifndef ECB_MEMORY_FENCE |
659 | #ifndef ECB_MEMORY_FENCE |
650 | #if ECB_GCC_VERSION(4,7) |
660 | #if ECB_GCC_VERSION(4,7) |
651 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
661 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
652 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
662 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
663 | #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
664 | #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) |
653 | |
665 | |
654 | /* The __has_feature syntax from clang is so misdesigned that we cannot use it |
666 | /* The __has_feature syntax from clang is so misdesigned that we cannot use it |
655 | * without risking compile time errors with other compilers. We *could* |
667 | * without risking compile time errors with other compilers. We *could* |
656 | * define our own ecb_clang_has_feature, but I just can't be bothered to work |
668 | * define our own ecb_clang_has_feature, but I just can't be bothered to work |
657 | * around this shit time and again. |
669 | * around this shit time and again. |
658 | * #elif defined __clang && __has_feature (cxx_atomic) |
670 | * #elif defined __clang && __has_feature (cxx_atomic) |
659 | * // see comment below (stdatomic.h) about the C11 memory model. |
671 | * // see comment below (stdatomic.h) about the C11 memory model. |
660 | * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
672 | * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
673 | * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
674 | * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
661 | */ |
675 | */ |
662 | |
676 | |
663 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
677 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
664 | #define ECB_MEMORY_FENCE __sync_synchronize () |
678 | #define ECB_MEMORY_FENCE __sync_synchronize () |
|
|
679 | #elif _MSC_VER >= 1500 /* VC++ 2008 */ |
|
|
680 | /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ |
|
|
681 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
682 | #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier() |
|
|
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() |
665 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
685 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
666 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
686 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
667 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
687 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
668 | #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 */ |
669 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
689 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
… | |
… | |
689 | /* any fence other than seq_cst, which isn't very efficient for us. */ |
709 | /* any fence other than seq_cst, which isn't very efficient for us. */ |
690 | /* Why that is, we don't know - either the C11 memory model is quite useless */ |
710 | /* Why that is, we don't know - either the C11 memory model is quite useless */ |
691 | /* for most usages, or gcc and clang have a bug */ |
711 | /* for most usages, or gcc and clang have a bug */ |
692 | /* I *currently* lean towards the latter, and inefficiently implement */ |
712 | /* I *currently* lean towards the latter, and inefficiently implement */ |
693 | /* all three of ecb's fences as a seq_cst fence */ |
713 | /* all three of ecb's fences as a seq_cst fence */ |
|
|
714 | /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */ |
|
|
715 | /* for all __atomic_thread_fence's except seq_cst */ |
694 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
716 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
695 | #endif |
717 | #endif |
696 | #endif |
718 | #endif |
697 | |
719 | |
698 | #ifndef ECB_MEMORY_FENCE |
720 | #ifndef ECB_MEMORY_FENCE |
… | |
… | |
755 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
777 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
756 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
778 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
757 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
779 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
758 | #else |
780 | #else |
759 | #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 | |
760 | #define ecb_is_constant(expr) 0 |
787 | #define ecb_is_constant(expr) 0 |
761 | #define ecb_expect(expr,value) (expr) |
788 | #define ecb_expect(expr,value) (expr) |
762 | #define ecb_prefetch(addr,rw,locality) |
789 | #define ecb_prefetch(addr,rw,locality) |
763 | #endif |
790 | #endif |
764 | |
791 | |
… | |
… | |
1059 | || defined __hppa__ \ |
1086 | || defined __hppa__ \ |
1060 | || defined __ia64__ \ |
1087 | || defined __ia64__ \ |
1061 | || defined __m68k__ \ |
1088 | || defined __m68k__ \ |
1062 | || defined __m88k__ \ |
1089 | || defined __m88k__ \ |
1063 | || defined __sh__ \ |
1090 | || defined __sh__ \ |
1064 | || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 |
1091 | || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \ |
|
|
1092 | || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) |
1065 | #define ECB_STDFP 1 |
1093 | #define ECB_STDFP 1 |
1066 | #include <string.h> /* for memcpy */ |
1094 | #include <string.h> /* for memcpy */ |
1067 | #else |
1095 | #else |
1068 | #define ECB_STDFP 0 |
1096 | #define ECB_STDFP 0 |
1069 | #endif |
1097 | #endif |
1070 | |
1098 | |
1071 | #ifndef ECB_NO_LIBM |
1099 | #ifndef ECB_NO_LIBM |
1072 | |
1100 | |
1073 | #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ |
1101 | #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ |
1074 | |
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 | |
1075 | #ifdef NEN |
1110 | #ifdef NAN |
1076 | #define ECB_NAN NAN |
1111 | #define ECB_NAN NAN |
1077 | #else |
1112 | #else |
1078 | #define ECB_NAN INFINITY |
1113 | #define ECB_NAN ECB_INFINITY |
1079 | #endif |
1114 | #endif |
1080 | |
1115 | |
1081 | /* converts an ieee half/binary16 to a float */ |
1116 | /* converts an ieee half/binary16 to a float */ |
1082 | ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; |
1117 | ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; |
1083 | ecb_function_ float |
1118 | ecb_function_ float |
… | |
… | |
1088 | float r; |
1123 | float r; |
1089 | |
1124 | |
1090 | if (!e ) r = ldexpf (m , -24); |
1125 | if (!e ) r = ldexpf (m , -24); |
1091 | else if (e != 31) r = ldexpf (m + 0x400, e - 25); |
1126 | else if (e != 31) r = ldexpf (m + 0x400, e - 25); |
1092 | else if (m ) r = ECB_NAN; |
1127 | else if (m ) r = ECB_NAN; |
1093 | else r = INFINITY; |
1128 | else r = ECB_INFINITY; |
1094 | |
1129 | |
1095 | return x & 0x8000 ? -r : r; |
1130 | return x & 0x8000 ? -r : r; |
1096 | } |
1131 | } |
1097 | |
1132 | |
1098 | /* convert a float to ieee single/binary32 */ |
1133 | /* convert a float to ieee single/binary32 */ |
… | |
… | |
2545 | { |
2580 | { |
2546 | return userdata; |
2581 | return userdata; |
2547 | } |
2582 | } |
2548 | |
2583 | |
2549 | void |
2584 | void |
2550 | 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 |
2551 | { |
2586 | { |
2552 | invoke_cb = invoke_pending_cb; |
2587 | invoke_cb = invoke_pending_cb; |
2553 | } |
2588 | } |
2554 | |
2589 | |
2555 | void |
2590 | void |
2556 | 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 |
2557 | { |
2592 | { |
2558 | release_cb = release; |
2593 | release_cb = release; |
2559 | acquire_cb = acquire; |
2594 | acquire_cb = acquire; |
2560 | } |
2595 | } |
2561 | #endif |
2596 | #endif |