… | |
… | |
357 | |
357 | |
358 | #ifndef EV_HEAP_CACHE_AT |
358 | #ifndef EV_HEAP_CACHE_AT |
359 | # define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
359 | # define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
360 | #endif |
360 | #endif |
361 | |
361 | |
|
|
362 | #ifdef ANDROID |
|
|
363 | /* supposedly, android doesn't typedef fd_mask */ |
|
|
364 | # undef EV_USE_SELECT |
|
|
365 | # define EV_USE_SELECT 0 |
|
|
366 | /* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ |
|
|
367 | # undef EV_USE_CLOCK_SYSCALL |
|
|
368 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
369 | #endif |
|
|
370 | |
|
|
371 | /* aix's poll.h seems to cause lots of trouble */ |
|
|
372 | #ifdef _AIX |
|
|
373 | /* AIX has a completely broken poll.h header */ |
|
|
374 | # undef EV_USE_POLL |
|
|
375 | # define EV_USE_POLL 0 |
|
|
376 | #endif |
|
|
377 | |
362 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
378 | /* 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. */ |
379 | /* which makes programs even slower. might work on other unices, too. */ |
364 | #if EV_USE_CLOCK_SYSCALL |
380 | #if EV_USE_CLOCK_SYSCALL |
365 | # include <sys/syscall.h> |
381 | # include <sys/syscall.h> |
366 | # ifdef SYS_clock_gettime |
382 | # ifdef SYS_clock_gettime |
… | |
… | |
372 | # define EV_USE_CLOCK_SYSCALL 0 |
388 | # define EV_USE_CLOCK_SYSCALL 0 |
373 | # endif |
389 | # endif |
374 | #endif |
390 | #endif |
375 | |
391 | |
376 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
392 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
377 | |
|
|
378 | #ifdef _AIX |
|
|
379 | /* AIX has a completely broken poll.h header */ |
|
|
380 | # undef EV_USE_POLL |
|
|
381 | # define EV_USE_POLL 0 |
|
|
382 | #endif |
|
|
383 | |
393 | |
384 | #ifndef CLOCK_MONOTONIC |
394 | #ifndef CLOCK_MONOTONIC |
385 | # undef EV_USE_MONOTONIC |
395 | # undef EV_USE_MONOTONIC |
386 | # define EV_USE_MONOTONIC 0 |
396 | # define EV_USE_MONOTONIC 0 |
387 | #endif |
397 | #endif |
… | |
… | |
505 | |
515 | |
506 | #ifndef ECB_H |
516 | #ifndef ECB_H |
507 | #define ECB_H |
517 | #define ECB_H |
508 | |
518 | |
509 | /* 16 bits major, 16 bits minor */ |
519 | /* 16 bits major, 16 bits minor */ |
510 | #define ECB_VERSION 0x00010001 |
520 | #define ECB_VERSION 0x00010002 |
511 | |
521 | |
512 | #ifdef _WIN32 |
522 | #ifdef _WIN32 |
513 | typedef signed char int8_t; |
523 | typedef signed char int8_t; |
514 | typedef unsigned char uint8_t; |
524 | typedef unsigned char uint8_t; |
515 | typedef signed short int16_t; |
525 | typedef signed short int16_t; |
… | |
… | |
530 | #else |
540 | #else |
531 | #define ECB_PTRSIZE 4 |
541 | #define ECB_PTRSIZE 4 |
532 | typedef uint32_t uintptr_t; |
542 | typedef uint32_t uintptr_t; |
533 | typedef int32_t intptr_t; |
543 | typedef int32_t intptr_t; |
534 | #endif |
544 | #endif |
535 | typedef intptr_t ptrdiff_t; |
|
|
536 | #else |
545 | #else |
537 | #include <inttypes.h> |
546 | #include <inttypes.h> |
538 | #if UINTMAX_MAX > 0xffffffffU |
547 | #if UINTMAX_MAX > 0xffffffffU |
539 | #define ECB_PTRSIZE 8 |
548 | #define ECB_PTRSIZE 8 |
540 | #else |
549 | #else |
… | |
… | |
559 | |
568 | |
560 | #define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ |
569 | #define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ |
561 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
570 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
562 | #define ECB_C11 (__STDC_VERSION__ >= 201112L) |
571 | #define ECB_C11 (__STDC_VERSION__ >= 201112L) |
563 | #define ECB_CPP (__cplusplus+0) |
572 | #define ECB_CPP (__cplusplus+0) |
564 | #define ECB_CPP98 (__cplusplus >= 199711L) |
|
|
565 | #define ECB_CPP11 (__cplusplus >= 201103L) |
573 | #define ECB_CPP11 (__cplusplus >= 201103L) |
|
|
574 | |
|
|
575 | #if ECB_CPP |
|
|
576 | #define ECB_EXTERN_C extern "C" |
|
|
577 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
|
|
578 | #define ECB_EXTERN_C_END } |
|
|
579 | #else |
|
|
580 | #define ECB_EXTERN_C extern |
|
|
581 | #define ECB_EXTERN_C_BEG |
|
|
582 | #define ECB_EXTERN_C_END |
|
|
583 | #endif |
566 | |
584 | |
567 | /*****************************************************************************/ |
585 | /*****************************************************************************/ |
568 | |
586 | |
569 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
587 | /* 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 */ |
588 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
571 | |
589 | |
572 | #if ECB_NO_THREADS |
590 | #if ECB_NO_THREADS |
573 | # define ECB_NO_SMP 1 |
591 | #define ECB_NO_SMP 1 |
574 | #endif |
592 | #endif |
575 | |
593 | |
576 | #if ECB_NO_SMP |
594 | #if ECB_NO_SMP |
577 | #define ECB_MEMORY_FENCE do { } while (0) |
595 | #define ECB_MEMORY_FENCE do { } while (0) |
578 | #endif |
596 | #endif |
… | |
… | |
614 | #endif |
632 | #endif |
615 | #endif |
633 | #endif |
616 | |
634 | |
617 | #ifndef ECB_MEMORY_FENCE |
635 | #ifndef ECB_MEMORY_FENCE |
618 | #if ECB_GCC_VERSION(4,7) |
636 | #if ECB_GCC_VERSION(4,7) |
619 | /* see comment below about the C11 memory model. in short - avoid */ |
637 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
620 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
638 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
639 | |
|
|
640 | /* The __has_feature syntax from clang is so misdesigned that we cannot use it |
|
|
641 | * without risking compile time errors with other compilers. We *could* |
|
|
642 | * define our own ecb_clang_has_feature, but I just can't be bothered to work |
|
|
643 | * around this shit time and again. |
621 | #elif defined __clang && __has_feature (cxx_atomic) |
644 | * #elif defined __clang && __has_feature (cxx_atomic) |
622 | /* see above */ |
645 | * // see comment below (stdatomic.h) about the C11 memory model. |
623 | #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
646 | * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
647 | */ |
|
|
648 | |
624 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
649 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
625 | #define ECB_MEMORY_FENCE __sync_synchronize () |
650 | #define ECB_MEMORY_FENCE __sync_synchronize () |
626 | /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ |
|
|
627 | /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ |
|
|
628 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
651 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
629 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
652 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
630 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
653 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
631 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
654 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
632 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
655 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
… | |
… | |
646 | #ifndef ECB_MEMORY_FENCE |
669 | #ifndef ECB_MEMORY_FENCE |
647 | #if ECB_C11 && !defined __STDC_NO_ATOMICS__ |
670 | #if ECB_C11 && !defined __STDC_NO_ATOMICS__ |
648 | /* we assume that these memory fences work on all variables/all memory accesses, */ |
671 | /* we assume that these memory fences work on all variables/all memory accesses, */ |
649 | /* not just C11 atomics and atomic accesses */ |
672 | /* not just C11 atomics and atomic accesses */ |
650 | #include <stdatomic.h> |
673 | #include <stdatomic.h> |
651 | /* unfortunately, the C11 memory model seems to be very limited, and unable to express */ |
674 | /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */ |
652 | /* simple barrier semantics. That means we need to take out thor's hammer. */ |
675 | /* any fence other than seq_cst, which isn't very efficient for us. */ |
|
|
676 | /* Why that is, we don't know - either the C11 memory model is quite useless */ |
|
|
677 | /* for most usages, or gcc and clang have a bug */ |
|
|
678 | /* I *currently* lean towards the latter, and inefficiently implement */ |
|
|
679 | /* all three of ecb's fences as a seq_cst fence */ |
653 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
680 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
654 | #endif |
|
|
655 | #endif |
681 | #endif |
656 | #endif |
682 | #endif |
657 | |
683 | |
658 | #ifndef ECB_MEMORY_FENCE |
684 | #ifndef ECB_MEMORY_FENCE |
659 | #if !ECB_AVOID_PTHREADS |
685 | #if !ECB_AVOID_PTHREADS |
… | |
… | |
935 | ecb_inline void ecb_unreachable (void) ecb_noreturn; |
961 | ecb_inline void ecb_unreachable (void) ecb_noreturn; |
936 | ecb_inline void ecb_unreachable (void) { } |
962 | ecb_inline void ecb_unreachable (void) { } |
937 | #endif |
963 | #endif |
938 | |
964 | |
939 | /* try to tell the compiler that some condition is definitely true */ |
965 | /* try to tell the compiler that some condition is definitely true */ |
940 | #define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) |
966 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
941 | |
967 | |
942 | ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; |
968 | ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; |
943 | ecb_inline unsigned char |
969 | ecb_inline unsigned char |
944 | ecb_byteorder_helper (void) |
970 | ecb_byteorder_helper (void) |
945 | { |
971 | { |
946 | const uint32_t u = 0x11223344; |
972 | /* the union code still generates code under pressure in gcc, */ |
947 | return *(unsigned char *)&u; |
973 | /* but less than using pointers, and always seems to */ |
|
|
974 | /* successfully return a constant. */ |
|
|
975 | /* the reason why we have this horrible preprocessor mess */ |
|
|
976 | /* is to avoid it in all cases, at least on common architectures */ |
|
|
977 | /* or when using a recent enough gcc version (>= 4.6) */ |
|
|
978 | #if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64 |
|
|
979 | return 0x44; |
|
|
980 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ |
|
|
981 | return 0x44; |
|
|
982 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
|
|
983 | return 0x11; |
|
|
984 | #else |
|
|
985 | union |
|
|
986 | { |
|
|
987 | uint32_t i; |
|
|
988 | uint8_t c; |
|
|
989 | } u = { 0x11223344 }; |
|
|
990 | return u.c; |
|
|
991 | #endif |
948 | } |
992 | } |
949 | |
993 | |
950 | ecb_inline ecb_bool ecb_big_endian (void) ecb_const; |
994 | ecb_inline ecb_bool ecb_big_endian (void) ecb_const; |
951 | ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
995 | ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
952 | ecb_inline ecb_bool ecb_little_endian (void) ecb_const; |
996 | ecb_inline ecb_bool ecb_little_endian (void) ecb_const; |
… | |
… | |
983 | } |
1027 | } |
984 | #else |
1028 | #else |
985 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
1029 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
986 | #endif |
1030 | #endif |
987 | |
1031 | |
|
|
1032 | /*******************************************************************************/ |
|
|
1033 | /* floating point stuff, can be disabled by defining ECB_NO_LIBM */ |
|
|
1034 | |
|
|
1035 | /* basically, everything uses "ieee pure-endian" floating point numbers */ |
|
|
1036 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
|
|
1037 | #if 0 \ |
|
|
1038 | || __i386 || __i386__ \ |
|
|
1039 | || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ |
|
|
1040 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
|
|
1041 | || defined __arm__ && defined __ARM_EABI__ \ |
|
|
1042 | || defined __s390__ || defined __s390x__ \ |
|
|
1043 | || defined __mips__ \ |
|
|
1044 | || defined __alpha__ \ |
|
|
1045 | || defined __hppa__ \ |
|
|
1046 | || defined __ia64__ \ |
|
|
1047 | || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 |
|
|
1048 | #define ECB_STDFP 1 |
|
|
1049 | #include <string.h> /* for memcpy */ |
|
|
1050 | #else |
|
|
1051 | #define ECB_STDFP 0 |
|
|
1052 | #include <math.h> /* for frexp*, ldexp* */ |
|
|
1053 | #endif |
|
|
1054 | |
|
|
1055 | #ifndef ECB_NO_LIBM |
|
|
1056 | |
|
|
1057 | /* convert a float to ieee single/binary32 */ |
|
|
1058 | ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; |
|
|
1059 | ecb_function_ uint32_t |
|
|
1060 | ecb_float_to_binary32 (float x) |
|
|
1061 | { |
|
|
1062 | uint32_t r; |
|
|
1063 | |
|
|
1064 | #if ECB_STDFP |
|
|
1065 | memcpy (&r, &x, 4); |
|
|
1066 | #else |
|
|
1067 | /* slow emulation, works for anything but -0 */ |
|
|
1068 | uint32_t m; |
|
|
1069 | int e; |
|
|
1070 | |
|
|
1071 | if (x == 0e0f ) return 0x00000000U; |
|
|
1072 | if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
|
|
1073 | if (x < -3.40282346638528860e+38f) return 0xff800000U; |
|
|
1074 | if (x != x ) return 0x7fbfffffU; |
|
|
1075 | |
|
|
1076 | m = frexpf (x, &e) * 0x1000000U; |
|
|
1077 | |
|
|
1078 | r = m & 0x80000000U; |
|
|
1079 | |
|
|
1080 | if (r) |
|
|
1081 | m = -m; |
|
|
1082 | |
|
|
1083 | if (e <= -126) |
|
|
1084 | { |
|
|
1085 | m &= 0xffffffU; |
|
|
1086 | m >>= (-125 - e); |
|
|
1087 | e = -126; |
|
|
1088 | } |
|
|
1089 | |
|
|
1090 | r |= (e + 126) << 23; |
|
|
1091 | r |= m & 0x7fffffU; |
|
|
1092 | #endif |
|
|
1093 | |
|
|
1094 | return r; |
|
|
1095 | } |
|
|
1096 | |
|
|
1097 | /* converts an ieee single/binary32 to a float */ |
|
|
1098 | ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const; |
|
|
1099 | ecb_function_ float |
|
|
1100 | ecb_binary32_to_float (uint32_t x) |
|
|
1101 | { |
|
|
1102 | float r; |
|
|
1103 | |
|
|
1104 | #if ECB_STDFP |
|
|
1105 | memcpy (&r, &x, 4); |
|
|
1106 | #else |
|
|
1107 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1108 | int neg = x >> 31; |
|
|
1109 | int e = (x >> 23) & 0xffU; |
|
|
1110 | |
|
|
1111 | x &= 0x7fffffU; |
|
|
1112 | |
|
|
1113 | if (e) |
|
|
1114 | x |= 0x800000U; |
|
|
1115 | else |
|
|
1116 | e = 1; |
|
|
1117 | |
|
|
1118 | /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ |
|
|
1119 | r = ldexpf (x * (0.5f / 0x800000U), e - 126); |
|
|
1120 | |
|
|
1121 | r = neg ? -r : r; |
|
|
1122 | #endif |
|
|
1123 | |
|
|
1124 | return r; |
|
|
1125 | } |
|
|
1126 | |
|
|
1127 | /* convert a double to ieee double/binary64 */ |
|
|
1128 | ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const; |
|
|
1129 | ecb_function_ uint64_t |
|
|
1130 | ecb_double_to_binary64 (double x) |
|
|
1131 | { |
|
|
1132 | uint64_t r; |
|
|
1133 | |
|
|
1134 | #if ECB_STDFP |
|
|
1135 | memcpy (&r, &x, 8); |
|
|
1136 | #else |
|
|
1137 | /* slow emulation, works for anything but -0 */ |
|
|
1138 | uint64_t m; |
|
|
1139 | int e; |
|
|
1140 | |
|
|
1141 | if (x == 0e0 ) return 0x0000000000000000U; |
|
|
1142 | if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U; |
|
|
1143 | if (x < -1.79769313486231470e+308) return 0xfff0000000000000U; |
|
|
1144 | if (x != x ) return 0X7ff7ffffffffffffU; |
|
|
1145 | |
|
|
1146 | m = frexp (x, &e) * 0x20000000000000U; |
|
|
1147 | |
|
|
1148 | r = m & 0x8000000000000000;; |
|
|
1149 | |
|
|
1150 | if (r) |
|
|
1151 | m = -m; |
|
|
1152 | |
|
|
1153 | if (e <= -1022) |
|
|
1154 | { |
|
|
1155 | m &= 0x1fffffffffffffU; |
|
|
1156 | m >>= (-1021 - e); |
|
|
1157 | e = -1022; |
|
|
1158 | } |
|
|
1159 | |
|
|
1160 | r |= ((uint64_t)(e + 1022)) << 52; |
|
|
1161 | r |= m & 0xfffffffffffffU; |
|
|
1162 | #endif |
|
|
1163 | |
|
|
1164 | return r; |
|
|
1165 | } |
|
|
1166 | |
|
|
1167 | /* converts an ieee double/binary64 to a double */ |
|
|
1168 | ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const; |
|
|
1169 | ecb_function_ double |
|
|
1170 | ecb_binary64_to_double (uint64_t x) |
|
|
1171 | { |
|
|
1172 | double r; |
|
|
1173 | |
|
|
1174 | #if ECB_STDFP |
|
|
1175 | memcpy (&r, &x, 8); |
|
|
1176 | #else |
|
|
1177 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1178 | int neg = x >> 63; |
|
|
1179 | int e = (x >> 52) & 0x7ffU; |
|
|
1180 | |
|
|
1181 | x &= 0xfffffffffffffU; |
|
|
1182 | |
|
|
1183 | if (e) |
|
|
1184 | x |= 0x10000000000000U; |
|
|
1185 | else |
|
|
1186 | e = 1; |
|
|
1187 | |
|
|
1188 | /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */ |
|
|
1189 | r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022); |
|
|
1190 | |
|
|
1191 | r = neg ? -r : r; |
|
|
1192 | #endif |
|
|
1193 | |
|
|
1194 | return r; |
|
|
1195 | } |
|
|
1196 | |
|
|
1197 | #endif |
|
|
1198 | |
988 | #endif |
1199 | #endif |
989 | |
1200 | |
990 | /* ECB.H END */ |
1201 | /* ECB.H END */ |
991 | |
1202 | |
992 | #if ECB_MEMORY_FENCE_NEEDS_PTHREADS |
1203 | #if ECB_MEMORY_FENCE_NEEDS_PTHREADS |
… | |
… | |
1191 | } |
1402 | } |
1192 | |
1403 | |
1193 | static void * |
1404 | static void * |
1194 | ev_realloc_emul (void *ptr, long size) EV_THROW |
1405 | ev_realloc_emul (void *ptr, long size) EV_THROW |
1195 | { |
1406 | { |
1196 | #if __GLIBC__ |
|
|
1197 | return realloc (ptr, size); |
|
|
1198 | #else |
|
|
1199 | /* some systems, notably openbsd and darwin, fail to properly |
1407 | /* some systems, notably openbsd and darwin, fail to properly |
1200 | * implement realloc (x, 0) (as required by both ansi c-89 and |
1408 | * implement realloc (x, 0) (as required by both ansi c-89 and |
1201 | * the single unix specification, so work around them here. |
1409 | * the single unix specification, so work around them here. |
|
|
1410 | * recently, also (at least) fedora and debian started breaking it, |
|
|
1411 | * despite documenting it otherwise. |
1202 | */ |
1412 | */ |
1203 | |
1413 | |
1204 | if (size) |
1414 | if (size) |
1205 | return realloc (ptr, size); |
1415 | return realloc (ptr, size); |
1206 | |
1416 | |
1207 | free (ptr); |
1417 | free (ptr); |
1208 | return 0; |
1418 | return 0; |
1209 | #endif |
|
|
1210 | } |
1419 | } |
1211 | |
1420 | |
1212 | static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; |
1421 | static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; |
1213 | |
1422 | |
1214 | void ecb_cold |
1423 | void ecb_cold |
… | |
… | |
1869 | static void noinline ecb_cold |
2078 | static void noinline ecb_cold |
1870 | evpipe_init (EV_P) |
2079 | evpipe_init (EV_P) |
1871 | { |
2080 | { |
1872 | if (!ev_is_active (&pipe_w)) |
2081 | if (!ev_is_active (&pipe_w)) |
1873 | { |
2082 | { |
|
|
2083 | int fds [2]; |
|
|
2084 | |
1874 | # if EV_USE_EVENTFD |
2085 | # if EV_USE_EVENTFD |
|
|
2086 | fds [0] = -1; |
1875 | evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
2087 | fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
1876 | if (evfd < 0 && errno == EINVAL) |
2088 | if (fds [1] < 0 && errno == EINVAL) |
1877 | evfd = eventfd (0, 0); |
2089 | fds [1] = eventfd (0, 0); |
1878 | |
2090 | |
1879 | if (evfd >= 0) |
2091 | if (fds [1] < 0) |
1880 | { |
|
|
1881 | evpipe [0] = -1; |
|
|
1882 | fd_intern (evfd); /* doing it twice doesn't hurt */ |
|
|
1883 | ev_io_set (&pipe_w, evfd, EV_READ); |
|
|
1884 | } |
|
|
1885 | else |
|
|
1886 | # endif |
2092 | # endif |
1887 | { |
2093 | { |
1888 | while (pipe (evpipe)) |
2094 | while (pipe (fds)) |
1889 | ev_syserr ("(libev) error creating signal/async pipe"); |
2095 | ev_syserr ("(libev) error creating signal/async pipe"); |
1890 | |
2096 | |
1891 | fd_intern (evpipe [0]); |
2097 | fd_intern (fds [0]); |
1892 | fd_intern (evpipe [1]); |
|
|
1893 | ev_io_set (&pipe_w, evpipe [0], EV_READ); |
|
|
1894 | } |
2098 | } |
1895 | |
2099 | |
|
|
2100 | fd_intern (fds [1]); |
|
|
2101 | |
|
|
2102 | evpipe [0] = fds [0]; |
|
|
2103 | |
|
|
2104 | if (evpipe [1] < 0) |
|
|
2105 | evpipe [1] = fds [1]; /* first call, set write fd */ |
|
|
2106 | else |
|
|
2107 | { |
|
|
2108 | /* on subsequent calls, do not change evpipe [1] */ |
|
|
2109 | /* so that evpipe_write can always rely on its value. */ |
|
|
2110 | /* this branch does not do anything sensible on windows, */ |
|
|
2111 | /* so must not be executed on windows */ |
|
|
2112 | |
|
|
2113 | dup2 (fds [1], evpipe [1]); |
|
|
2114 | close (fds [1]); |
|
|
2115 | } |
|
|
2116 | |
|
|
2117 | ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ); |
1896 | ev_io_start (EV_A_ &pipe_w); |
2118 | ev_io_start (EV_A_ &pipe_w); |
1897 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
2119 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
1898 | } |
2120 | } |
1899 | } |
2121 | } |
1900 | |
2122 | |
… | |
… | |
1921 | ECB_MEMORY_FENCE_RELEASE; |
2143 | ECB_MEMORY_FENCE_RELEASE; |
1922 | |
2144 | |
1923 | old_errno = errno; /* save errno because write will clobber it */ |
2145 | old_errno = errno; /* save errno because write will clobber it */ |
1924 | |
2146 | |
1925 | #if EV_USE_EVENTFD |
2147 | #if EV_USE_EVENTFD |
1926 | if (evfd >= 0) |
2148 | if (evpipe [0] < 0) |
1927 | { |
2149 | { |
1928 | uint64_t counter = 1; |
2150 | uint64_t counter = 1; |
1929 | write (evfd, &counter, sizeof (uint64_t)); |
2151 | write (evpipe [1], &counter, sizeof (uint64_t)); |
1930 | } |
2152 | } |
1931 | else |
2153 | else |
1932 | #endif |
2154 | #endif |
1933 | { |
2155 | { |
1934 | #ifdef _WIN32 |
2156 | #ifdef _WIN32 |
… | |
… | |
1954 | int i; |
2176 | int i; |
1955 | |
2177 | |
1956 | if (revents & EV_READ) |
2178 | if (revents & EV_READ) |
1957 | { |
2179 | { |
1958 | #if EV_USE_EVENTFD |
2180 | #if EV_USE_EVENTFD |
1959 | if (evfd >= 0) |
2181 | if (evpipe [0] < 0) |
1960 | { |
2182 | { |
1961 | uint64_t counter; |
2183 | uint64_t counter; |
1962 | read (evfd, &counter, sizeof (uint64_t)); |
2184 | read (evpipe [1], &counter, sizeof (uint64_t)); |
1963 | } |
2185 | } |
1964 | else |
2186 | else |
1965 | #endif |
2187 | #endif |
1966 | { |
2188 | { |
1967 | char dummy[4]; |
2189 | char dummy[4]; |
… | |
… | |
2017 | |
2239 | |
2018 | void |
2240 | void |
2019 | ev_feed_signal (int signum) EV_THROW |
2241 | ev_feed_signal (int signum) EV_THROW |
2020 | { |
2242 | { |
2021 | #if EV_MULTIPLICITY |
2243 | #if EV_MULTIPLICITY |
|
|
2244 | ECB_MEMORY_FENCE_ACQUIRE; |
2022 | EV_P = signals [signum - 1].loop; |
2245 | EV_P = signals [signum - 1].loop; |
2023 | |
2246 | |
2024 | if (!EV_A) |
2247 | if (!EV_A) |
2025 | return; |
2248 | return; |
2026 | #endif |
2249 | #endif |
2027 | |
2250 | |
2028 | if (!ev_active (&pipe_w)) |
|
|
2029 | return; |
|
|
2030 | |
|
|
2031 | signals [signum - 1].pending = 1; |
2251 | signals [signum - 1].pending = 1; |
2032 | evpipe_write (EV_A_ &sig_pending); |
2252 | evpipe_write (EV_A_ &sig_pending); |
2033 | } |
2253 | } |
2034 | |
2254 | |
2035 | static void |
2255 | static void |
… | |
… | |
2045 | void noinline |
2265 | void noinline |
2046 | ev_feed_signal_event (EV_P_ int signum) EV_THROW |
2266 | ev_feed_signal_event (EV_P_ int signum) EV_THROW |
2047 | { |
2267 | { |
2048 | WL w; |
2268 | WL w; |
2049 | |
2269 | |
2050 | if (expect_false (signum <= 0 || signum > EV_NSIG)) |
2270 | if (expect_false (signum <= 0 || signum >= EV_NSIG)) |
2051 | return; |
2271 | return; |
2052 | |
2272 | |
2053 | --signum; |
2273 | --signum; |
2054 | |
2274 | |
2055 | #if EV_MULTIPLICITY |
2275 | #if EV_MULTIPLICITY |
… | |
… | |
2059 | if (expect_false (signals [signum].loop != EV_A)) |
2279 | if (expect_false (signals [signum].loop != EV_A)) |
2060 | return; |
2280 | return; |
2061 | #endif |
2281 | #endif |
2062 | |
2282 | |
2063 | signals [signum].pending = 0; |
2283 | signals [signum].pending = 0; |
2064 | MEMORY_FENCE_RELEASE; |
2284 | ECB_MEMORY_FENCE_RELEASE; |
2065 | |
2285 | |
2066 | for (w = signals [signum].head; w; w = w->next) |
2286 | for (w = signals [signum].head; w; w = w->next) |
2067 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
2287 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
2068 | } |
2288 | } |
2069 | |
2289 | |
… | |
… | |
2353 | #if EV_ASYNC_ENABLE |
2573 | #if EV_ASYNC_ENABLE |
2354 | async_pending = 0; |
2574 | async_pending = 0; |
2355 | #endif |
2575 | #endif |
2356 | pipe_write_skipped = 0; |
2576 | pipe_write_skipped = 0; |
2357 | pipe_write_wanted = 0; |
2577 | pipe_write_wanted = 0; |
|
|
2578 | evpipe [0] = -1; |
|
|
2579 | evpipe [1] = -1; |
2358 | #if EV_USE_INOTIFY |
2580 | #if EV_USE_INOTIFY |
2359 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
2581 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
2360 | #endif |
2582 | #endif |
2361 | #if EV_USE_SIGNALFD |
2583 | #if EV_USE_SIGNALFD |
2362 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
2584 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
… | |
… | |
2425 | if (ev_is_active (&pipe_w)) |
2647 | if (ev_is_active (&pipe_w)) |
2426 | { |
2648 | { |
2427 | /*ev_ref (EV_A);*/ |
2649 | /*ev_ref (EV_A);*/ |
2428 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
2650 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
2429 | |
2651 | |
2430 | #if EV_USE_EVENTFD |
|
|
2431 | if (evfd >= 0) |
|
|
2432 | close (evfd); |
|
|
2433 | #endif |
|
|
2434 | |
|
|
2435 | if (evpipe [0] >= 0) |
|
|
2436 | { |
|
|
2437 | EV_WIN32_CLOSE_FD (evpipe [0]); |
2652 | if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]); |
2438 | EV_WIN32_CLOSE_FD (evpipe [1]); |
2653 | if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]); |
2439 | } |
|
|
2440 | } |
2654 | } |
2441 | |
2655 | |
2442 | #if EV_USE_SIGNALFD |
2656 | #if EV_USE_SIGNALFD |
2443 | if (ev_is_active (&sigfd_w)) |
2657 | if (ev_is_active (&sigfd_w)) |
2444 | close (sigfd); |
2658 | close (sigfd); |
… | |
… | |
2530 | #endif |
2744 | #endif |
2531 | #if EV_USE_INOTIFY |
2745 | #if EV_USE_INOTIFY |
2532 | infy_fork (EV_A); |
2746 | infy_fork (EV_A); |
2533 | #endif |
2747 | #endif |
2534 | |
2748 | |
|
|
2749 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
2535 | if (ev_is_active (&pipe_w)) |
2750 | if (ev_is_active (&pipe_w)) |
2536 | { |
2751 | { |
2537 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
2752 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
2538 | |
2753 | |
2539 | ev_ref (EV_A); |
2754 | ev_ref (EV_A); |
2540 | ev_io_stop (EV_A_ &pipe_w); |
2755 | ev_io_stop (EV_A_ &pipe_w); |
2541 | |
2756 | |
2542 | #if EV_USE_EVENTFD |
|
|
2543 | if (evfd >= 0) |
|
|
2544 | close (evfd); |
|
|
2545 | #endif |
|
|
2546 | |
|
|
2547 | if (evpipe [0] >= 0) |
2757 | if (evpipe [0] >= 0) |
2548 | { |
|
|
2549 | EV_WIN32_CLOSE_FD (evpipe [0]); |
2758 | EV_WIN32_CLOSE_FD (evpipe [0]); |
2550 | EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
2551 | } |
|
|
2552 | |
2759 | |
2553 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
2554 | evpipe_init (EV_A); |
2760 | evpipe_init (EV_A); |
2555 | /* now iterate over everything, in case we missed something */ |
2761 | /* iterate over everything, in case we missed something before */ |
2556 | pipecb (EV_A_ &pipe_w, EV_READ); |
2762 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
2557 | #endif |
|
|
2558 | } |
2763 | } |
|
|
2764 | #endif |
2559 | |
2765 | |
2560 | postfork = 0; |
2766 | postfork = 0; |
2561 | } |
2767 | } |
2562 | |
2768 | |
2563 | #if EV_MULTIPLICITY |
2769 | #if EV_MULTIPLICITY |
… | |
… | |
2736 | } |
2942 | } |
2737 | |
2943 | |
2738 | void |
2944 | void |
2739 | ev_loop_fork (EV_P) EV_THROW |
2945 | ev_loop_fork (EV_P) EV_THROW |
2740 | { |
2946 | { |
2741 | postfork = 1; /* must be in line with ev_default_fork */ |
2947 | postfork = 1; |
2742 | } |
2948 | } |
2743 | |
2949 | |
2744 | /*****************************************************************************/ |
2950 | /*****************************************************************************/ |
2745 | |
2951 | |
2746 | void |
2952 | void |
… | |
… | |
2762 | } |
2968 | } |
2763 | |
2969 | |
2764 | void noinline |
2970 | void noinline |
2765 | ev_invoke_pending (EV_P) |
2971 | ev_invoke_pending (EV_P) |
2766 | { |
2972 | { |
2767 | for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */ |
2973 | pendingpri = NUMPRI; |
|
|
2974 | |
|
|
2975 | while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ |
|
|
2976 | { |
|
|
2977 | --pendingpri; |
|
|
2978 | |
2768 | while (pendingcnt [pendingpri]) |
2979 | while (pendingcnt [pendingpri]) |
2769 | { |
2980 | { |
2770 | ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; |
2981 | ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; |
2771 | |
2982 | |
2772 | p->w->pending = 0; |
2983 | p->w->pending = 0; |
2773 | EV_CB_INVOKE (p->w, p->events); |
2984 | EV_CB_INVOKE (p->w, p->events); |
2774 | EV_FREQUENT_CHECK; |
2985 | EV_FREQUENT_CHECK; |
2775 | } |
2986 | } |
|
|
2987 | } |
2776 | } |
2988 | } |
2777 | |
2989 | |
2778 | #if EV_IDLE_ENABLE |
2990 | #if EV_IDLE_ENABLE |
2779 | /* make idle watchers pending. this handles the "call-idle */ |
2991 | /* make idle watchers pending. this handles the "call-idle */ |
2780 | /* only when higher priorities are idle" logic */ |
2992 | /* only when higher priorities are idle" logic */ |
… | |
… | |
3138 | backend_poll (EV_A_ waittime); |
3350 | backend_poll (EV_A_ waittime); |
3139 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
3351 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
3140 | |
3352 | |
3141 | pipe_write_wanted = 0; /* just an optimisation, no fence needed */ |
3353 | pipe_write_wanted = 0; /* just an optimisation, no fence needed */ |
3142 | |
3354 | |
|
|
3355 | ECB_MEMORY_FENCE_ACQUIRE; |
3143 | if (pipe_write_skipped) |
3356 | if (pipe_write_skipped) |
3144 | { |
3357 | { |
3145 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
3358 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
3146 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
3359 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
3147 | } |
3360 | } |
… | |
… | |
3525 | #if EV_MULTIPLICITY |
3738 | #if EV_MULTIPLICITY |
3526 | assert (("libev: a signal must not be attached to two different loops", |
3739 | assert (("libev: a signal must not be attached to two different loops", |
3527 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
3740 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
3528 | |
3741 | |
3529 | signals [w->signum - 1].loop = EV_A; |
3742 | signals [w->signum - 1].loop = EV_A; |
|
|
3743 | ECB_MEMORY_FENCE_RELEASE; |
3530 | #endif |
3744 | #endif |
3531 | |
3745 | |
3532 | EV_FREQUENT_CHECK; |
3746 | EV_FREQUENT_CHECK; |
3533 | |
3747 | |
3534 | #if EV_USE_SIGNALFD |
3748 | #if EV_USE_SIGNALFD |
… | |
… | |
3689 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
3903 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
3690 | |
3904 | |
3691 | static void noinline |
3905 | static void noinline |
3692 | infy_add (EV_P_ ev_stat *w) |
3906 | infy_add (EV_P_ ev_stat *w) |
3693 | { |
3907 | { |
3694 | 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); |
3908 | w->wd = inotify_add_watch (fs_fd, w->path, |
|
|
3909 | IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY |
|
|
3910 | | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO |
|
|
3911 | | IN_DONT_FOLLOW | IN_MASK_ADD); |
3695 | |
3912 | |
3696 | if (w->wd >= 0) |
3913 | if (w->wd >= 0) |
3697 | { |
3914 | { |
3698 | struct statfs sfs; |
3915 | struct statfs sfs; |
3699 | |
3916 | |
… | |
… | |
3703 | |
3920 | |
3704 | if (!fs_2625) |
3921 | if (!fs_2625) |
3705 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
3922 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
3706 | else if (!statfs (w->path, &sfs) |
3923 | else if (!statfs (w->path, &sfs) |
3707 | && (sfs.f_type == 0x1373 /* devfs */ |
3924 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
3925 | || sfs.f_type == 0x4006 /* fat */ |
|
|
3926 | || sfs.f_type == 0x4d44 /* msdos */ |
3708 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
3927 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
3928 | || sfs.f_type == 0x72b6 /* jffs2 */ |
|
|
3929 | || sfs.f_type == 0x858458f6 /* ramfs */ |
|
|
3930 | || sfs.f_type == 0x5346544e /* ntfs */ |
3709 | || sfs.f_type == 0x3153464a /* jfs */ |
3931 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
3932 | || sfs.f_type == 0x9123683e /* btrfs */ |
3710 | || sfs.f_type == 0x52654973 /* reiser3 */ |
3933 | || sfs.f_type == 0x52654973 /* reiser3 */ |
3711 | || sfs.f_type == 0x01021994 /* tempfs */ |
3934 | || sfs.f_type == 0x01021994 /* tmpfs */ |
3712 | || sfs.f_type == 0x58465342 /* xfs */)) |
3935 | || sfs.f_type == 0x58465342 /* xfs */)) |
3713 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
3936 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
3714 | else |
3937 | else |
3715 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
3938 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
3716 | } |
3939 | } |