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Comparing libev/ev.c (file contents):
Revision 1.461 by root, Fri Dec 27 06:01:22 2013 UTC vs.
Revision 1.462 by root, Sun Jan 5 02:59:36 2014 UTC

… …
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 (©) 2009-2013 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:
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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
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617 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 617 || 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") 618 #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__ \ 619 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
620 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 620 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
622 #elif __sparc || __sparc__ 622 #elif (__sparc || __sparc__) && !__sparcv8
623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
624 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 624 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
625 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 625 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
626 #elif defined __s390__ || defined __s390x__ 626 #elif defined __s390__ || defined __s390x__
627 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 627 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
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660 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 660 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
661 */ 661 */
662 662
663 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 663 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
664 #define ECB_MEMORY_FENCE __sync_synchronize () 664 #define ECB_MEMORY_FENCE __sync_synchronize ()
665 #elif _MSC_VER >= 1500 /* VC++ 2008 */
666 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
667 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
668 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
669 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
670 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
665 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 671 #elif _MSC_VER >= 1400 /* VC++ 2005 */
666 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 672 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
667 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 673 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
668 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 674 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
669 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 675 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
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1070 1076
1071#ifndef ECB_NO_LIBM 1077#ifndef ECB_NO_LIBM
1072 1078
1073 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ 1079 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1074 1080
1081 /* only the oldest of old doesn't have this one. solaris. */
1082 #ifdef INFINITY
1083 #define ECB_INFINITY INFINITY
1084 #else
1085 #define ECB_INFINITY HUGE_VAL
1086 #endif
1087
1075 #ifdef NEN 1088 #ifdef NAN
1076 #define ECB_NAN NAN 1089 #define ECB_NAN NAN
1077 #else 1090 #else
1078 #define ECB_NAN INFINITY 1091 #define ECB_NAN ECB_INFINITY
1079 #endif 1092 #endif
1080 1093
1081 /* converts an ieee half/binary16 to a float */ 1094 /* converts an ieee half/binary16 to a float */
1082 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; 1095 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1083 ecb_function_ float 1096 ecb_function_ float
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1088 float r; 1101 float r;
1089 1102
1090 if (!e ) r = ldexpf (m , -24); 1103 if (!e ) r = ldexpf (m , -24);
1091 else if (e != 31) r = ldexpf (m + 0x400, e - 25); 1104 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1092 else if (m ) r = ECB_NAN; 1105 else if (m ) r = ECB_NAN;
1093 else r = INFINITY; 1106 else r = ECB_INFINITY;
1094 1107
1095 return x & 0x8000 ? -r : r; 1108 return x & 0x8000 ? -r : r;
1096 } 1109 }
1097 1110
1098 /* convert a float to ieee single/binary32 */ 1111 /* convert a float to ieee single/binary32 */

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