/*
* libev event processing core, watcher management
*
- * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>
+ * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modifica-
# include "config.h"
# endif
-#if HAVE_FLOOR
-# ifndef EV_USE_FLOOR
-# define EV_USE_FLOOR 1
+# if HAVE_FLOOR
+# ifndef EV_USE_FLOOR
+# define EV_USE_FLOOR 1
+# endif
# endif
-#endif
# if HAVE_CLOCK_SYSCALL
# ifndef EV_USE_CLOCK_SYSCALL
#elif defined _sys_nsig
# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
#else
-# error "unable to find value for NSIG, please report"
-/* to make it compile regardless, just remove the above line, */
-/* but consider reporting it, too! :) */
-# define EV_NSIG 65
+# define EV_NSIG (8 * sizeof (sigset_t) + 1)
#endif
#ifndef EV_USE_FLOOR
#endif
#ifndef EV_USE_CLOCK_SYSCALL
-# if __linux && __GLIBC__ >= 2
+# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
# else
# define EV_USE_CLOCK_SYSCALL 0
# endif
#endif
+#if !(_POSIX_TIMERS > 0)
+# ifndef EV_USE_MONOTONIC
+# define EV_USE_MONOTONIC 0
+# endif
+# ifndef EV_USE_REALTIME
+# define EV_USE_REALTIME 0
+# endif
+#endif
+
#ifndef EV_USE_MONOTONIC
# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
# define EV_USE_MONOTONIC EV_FEATURE_OS
# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
#endif
+#ifdef __ANDROID__
+/* supposedly, android doesn't typedef fd_mask */
+# undef EV_USE_SELECT
+# define EV_USE_SELECT 0
+/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
+# undef EV_USE_CLOCK_SYSCALL
+# define EV_USE_CLOCK_SYSCALL 0
+#endif
+
+/* aix's poll.h seems to cause lots of trouble */
+#ifdef _AIX
+/* AIX has a completely broken poll.h header */
+# undef EV_USE_POLL
+# define EV_USE_POLL 0
+#endif
+
/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
/* which makes programs even slower. might work on other unices, too. */
#if EV_USE_CLOCK_SYSCALL
/* this block fixes any misconfiguration where we know we run into trouble otherwise */
-#ifdef _AIX
-/* AIX has a completely broken poll.h header */
-# undef EV_USE_POLL
-# define EV_USE_POLL 0
-#endif
-
#ifndef CLOCK_MONOTONIC
# undef EV_USE_MONOTONIC
# define EV_USE_MONOTONIC 0
/*
* libecb - http://software.schmorp.de/pkg/libecb
*
- * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
+ * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
* Copyright (©) 2011 Emanuele Giaquinta
* All rights reserved.
*
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License ("GPL") version 2 or any later version,
+ * in which case the provisions of the GPL are applicable instead of
+ * the above. If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the BSD license, indicate your decision
+ * by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file under
+ * either the BSD or the GPL.
*/
#ifndef ECB_H
#define ECB_H
+/* 16 bits major, 16 bits minor */
+#define ECB_VERSION 0x00010005
+
#ifdef _WIN32
typedef signed char int8_t;
typedef unsigned char uint8_t;
typedef signed __int64 int64_t;
typedef unsigned __int64 uint64_t;
#endif
+ #ifdef _WIN64
+ #define ECB_PTRSIZE 8
+ typedef uint64_t uintptr_t;
+ typedef int64_t intptr_t;
+ #else
+ #define ECB_PTRSIZE 4
+ typedef uint32_t uintptr_t;
+ typedef int32_t intptr_t;
+ #endif
#else
#include <inttypes.h>
+ #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
+ #define ECB_PTRSIZE 8
+ #else
+ #define ECB_PTRSIZE 4
+ #endif
+#endif
+
+#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
+#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
+
+/* work around x32 idiocy by defining proper macros */
+#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
+ #if _ILP32
+ #define ECB_AMD64_X32 1
+ #else
+ #define ECB_AMD64 1
+ #endif
#endif
/* many compilers define _GNUC_ to some versions but then only implement
* we try to detect these and simply assume they are not gcc - if they have
* an issue with that they should have done it right in the first place.
*/
-#ifndef ECB_GCC_VERSION
- #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
- #define ECB_GCC_VERSION(major,minor) 0
- #else
- #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
- #endif
+#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
+ #define ECB_GCC_VERSION(major,minor) 0
+#else
+ #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
+#endif
+
+#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
+
+#if __clang__ && defined __has_builtin
+ #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
+#else
+ #define ECB_CLANG_BUILTIN(x) 0
+#endif
+
+#if __clang__ && defined __has_extension
+ #define ECB_CLANG_EXTENSION(x) __has_extension (x)
+#else
+ #define ECB_CLANG_EXTENSION(x) 0
+#endif
+
+#define ECB_CPP (__cplusplus+0)
+#define ECB_CPP11 (__cplusplus >= 201103L)
+
+#if ECB_CPP
+ #define ECB_C 0
+ #define ECB_STDC_VERSION 0
+#else
+ #define ECB_C 1
+ #define ECB_STDC_VERSION __STDC_VERSION__
+#endif
+
+#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
+#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
+
+#if ECB_CPP
+ #define ECB_EXTERN_C extern "C"
+ #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
+ #define ECB_EXTERN_C_END }
+#else
+ #define ECB_EXTERN_C extern
+ #define ECB_EXTERN_C_BEG
+ #define ECB_EXTERN_C_END
#endif
/*****************************************************************************/
/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
#if ECB_NO_THREADS
-# define ECB_NO_SMP 1
+ #define ECB_NO_SMP 1
#endif
-#if ECB_NO_THREADS || ECB_NO_SMP
+#if ECB_NO_SMP
#define ECB_MEMORY_FENCE do { } while (0)
#endif
+/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
+#if __xlC__ && ECB_CPP
+ #include <builtins.h>
+#endif
+
+#if 1400 <= _MSC_VER
+ #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
+#endif
+
#ifndef ECB_MEMORY_FENCE
#if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
#if __i386 || __i386__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
- #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
- #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
- #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
- #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
- #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
- #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
+ #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
+ #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
+ #elif ECB_GCC_AMD64
+ #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
+ #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
+ #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
#elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
- #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
+ #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
+ #elif defined __ARM_ARCH_2__ \
+ || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
+ || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
+ || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
+ || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
+ || defined __ARM_ARCH_5TEJ__
+ /* should not need any, unless running old code on newer cpu - arm doesn't support that */
#elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
- || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
+ || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
+ || defined __ARM_ARCH_6T2__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
#elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
- || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
- #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
- #elif __sparc || __sparc__
- #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
- #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
- #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
+ || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
+ #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
+ #elif __aarch64__
+ #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
+ #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
+ #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
+ #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
+ #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
#elif defined __s390__ || defined __s390x__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
#elif defined __mips__
- #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
+ /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
+ /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
+ #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
#elif defined __alpha__
- #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
+ #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
+ #elif defined __hppa__
+ #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
+ #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
+ #elif defined __ia64__
+ #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
+ #elif defined __m68k__
+ #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
+ #elif defined __m88k__
+ #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
+ #elif defined __sh__
+ #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
#endif
#endif
#endif
#ifndef ECB_MEMORY_FENCE
- #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
+ #if ECB_GCC_VERSION(4,7)
+ /* see comment below (stdatomic.h) about the C11 memory model. */
+ #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
+ #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
+ #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
+
+ #elif ECB_CLANG_EXTENSION(c_atomic)
+ /* see comment below (stdatomic.h) about the C11 memory model. */
+ #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
+ #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
+ #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
+
+ #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
#define ECB_MEMORY_FENCE __sync_synchronize ()
- /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
- /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
+ #elif _MSC_VER >= 1500 /* VC++ 2008 */
+ /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
+ #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
+ #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
+ #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
+ #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
#elif _MSC_VER >= 1400 /* VC++ 2005 */
#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
#endif
#endif
+#ifndef ECB_MEMORY_FENCE
+ #if ECB_C11 && !defined __STDC_NO_ATOMICS__
+ /* we assume that these memory fences work on all variables/all memory accesses, */
+ /* not just C11 atomics and atomic accesses */
+ #include <stdatomic.h>
+ /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
+ /* any fence other than seq_cst, which isn't very efficient for us. */
+ /* Why that is, we don't know - either the C11 memory model is quite useless */
+ /* for most usages, or gcc and clang have a bug */
+ /* I *currently* lean towards the latter, and inefficiently implement */
+ /* all three of ecb's fences as a seq_cst fence */
+ /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
+ /* for all __atomic_thread_fence's except seq_cst */
+ #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
+ #endif
+#endif
+
#ifndef ECB_MEMORY_FENCE
#if !ECB_AVOID_PTHREADS
/*
/*****************************************************************************/
-#define ECB_C99 (__STDC_VERSION__ >= 199901L)
-
-#if __cplusplus
+#if ECB_CPP
#define ecb_inline static inline
#elif ECB_GCC_VERSION(2,5)
#define ecb_inline static __inline__
#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
#define ECB_STRINGIFY_(a) # a
#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
+#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
#define ecb_function_ ecb_inline
-#if ECB_GCC_VERSION(3,1)
- #define ecb_attribute(attrlist) __attribute__(attrlist)
- #define ecb_is_constant(expr) __builtin_constant_p (expr)
- #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
- #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
+#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
+ #define ecb_attribute(attrlist) __attribute__ (attrlist)
#else
#define ecb_attribute(attrlist)
+#endif
+
+#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
+ #define ecb_is_constant(expr) __builtin_constant_p (expr)
+#else
+ /* possible C11 impl for integral types
+ typedef struct ecb_is_constant_struct ecb_is_constant_struct;
+ #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
+
#define ecb_is_constant(expr) 0
+#endif
+
+#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
+ #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
+#else
#define ecb_expect(expr,value) (expr)
+#endif
+
+#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
+ #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
+#else
#define ecb_prefetch(addr,rw,locality)
#endif
/* no emulation for ecb_decltype */
-#if ECB_GCC_VERSION(4,5)
- #define ecb_decltype(x) __decltype(x)
-#elif ECB_GCC_VERSION(3,0)
- #define ecb_decltype(x) __typeof(x)
+#if ECB_CPP11
+ // older implementations might have problems with decltype(x)::type, work around it
+ template<class T> struct ecb_decltype_t { typedef T type; };
+ #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
+#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
+ #define ecb_decltype(x) __typeof__ (x)
+#endif
+
+#if _MSC_VER >= 1300
+ #define ecb_deprecated __declspec (deprecated)
+#else
+ #define ecb_deprecated ecb_attribute ((__deprecated__))
+#endif
+
+#if _MSC_VER >= 1500
+ #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
+#elif ECB_GCC_VERSION(4,5)
+ #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
+#else
+ #define ecb_deprecated_message(msg) ecb_deprecated
+#endif
+
+#if _MSC_VER >= 1400
+ #define ecb_noinline __declspec (noinline)
+#else
+ #define ecb_noinline ecb_attribute ((__noinline__))
#endif
-#define ecb_noinline ecb_attribute ((__noinline__))
-#define ecb_noreturn ecb_attribute ((__noreturn__))
#define ecb_unused ecb_attribute ((__unused__))
#define ecb_const ecb_attribute ((__const__))
#define ecb_pure ecb_attribute ((__pure__))
+#if ECB_C11 || __IBMC_NORETURN
+ /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
+ #define ecb_noreturn _Noreturn
+#elif ECB_CPP11
+ #define ecb_noreturn [[noreturn]]
+#elif _MSC_VER >= 1200
+ /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
+ #define ecb_noreturn __declspec (noreturn)
+#else
+ #define ecb_noreturn ecb_attribute ((__noreturn__))
+#endif
+
#if ECB_GCC_VERSION(4,3)
#define ecb_artificial ecb_attribute ((__artificial__))
#define ecb_hot ecb_attribute ((__hot__))
#define ecb_unlikely(expr) ecb_expect_false (expr)
/* count trailing zero bits and count # of one bits */
-#if ECB_GCC_VERSION(3,4)
+#if ECB_GCC_VERSION(3,4) \
+ || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
+ && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
+ && ECB_CLANG_BUILTIN(__builtin_popcount))
/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
#define ecb_ld32(x) (__builtin_clz (x) ^ 31)
#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
#define ecb_popcount32(x) __builtin_popcount (x)
/* no popcountll */
#else
- ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
- ecb_function_ int
+ ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
+ ecb_function_ ecb_const int
ecb_ctz32 (uint32_t x)
{
+#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
+ unsigned long r;
+ _BitScanForward (&r, x);
+ return (int)r;
+#else
int r = 0;
x &= ~x + 1; /* this isolates the lowest bit */
#endif
return r;
+#endif
}
- ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
- ecb_function_ int
+ ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
+ ecb_function_ ecb_const int
ecb_ctz64 (uint64_t x)
{
- int shift = x & 0xffffffffU ? 0 : 32;
+#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
+ unsigned long r;
+ _BitScanForward64 (&r, x);
+ return (int)r;
+#else
+ int shift = x & 0xffffffff ? 0 : 32;
return ecb_ctz32 (x >> shift) + shift;
+#endif
}
- ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
- ecb_function_ int
+ ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
+ ecb_function_ ecb_const int
ecb_popcount32 (uint32_t x)
{
x -= (x >> 1) & 0x55555555;
return x >> 24;
}
- ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
- ecb_function_ int ecb_ld32 (uint32_t x)
+ ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
+ ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
{
+#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
+ unsigned long r;
+ _BitScanReverse (&r, x);
+ return (int)r;
+#else
int r = 0;
if (x >> 16) { x >>= 16; r += 16; }
if (x >> 1) { r += 1; }
return r;
+#endif
}
- ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
- ecb_function_ int ecb_ld64 (uint64_t x)
+ ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
+ ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
{
+#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
+ unsigned long r;
+ _BitScanReverse64 (&r, x);
+ return (int)r;
+#else
int r = 0;
if (x >> 32) { x >>= 32; r += 32; }
return r + ecb_ld32 (x);
+#endif
}
#endif
-ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
-ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
+ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
+ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
+ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
+ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
+
+ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
+ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
{
return ( (x * 0x0802U & 0x22110U)
- | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
+ | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
}
-ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
-ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
+ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
+ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
{
x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
return x;
}
-ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
-ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
+ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
+ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
{
x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
/* popcount64 is only available on 64 bit cpus as gcc builtin */
/* so for this version we are lazy */
-ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
-ecb_function_ int
+ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
+ecb_function_ ecb_const int
ecb_popcount64 (uint64_t x)
{
return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
}
-ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
-ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
-ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
-ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
-ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
-ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
-ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
-ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
-
-ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
-ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
-ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
-ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
-ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
-ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
-ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
-ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
-
-#if ECB_GCC_VERSION(4,3)
+ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
+ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
+ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
+ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
+ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
+ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
+ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
+ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
+
+ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
+ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
+ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
+ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
+ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
+ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
+ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
+ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
+
+#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
+ #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
+ #define ecb_bswap16(x) __builtin_bswap16 (x)
+ #else
#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
+ #endif
#define ecb_bswap32(x) __builtin_bswap32 (x)
#define ecb_bswap64(x) __builtin_bswap64 (x)
+#elif _MSC_VER
+ #include <stdlib.h>
+ #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
+ #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
+ #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
#else
- ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
- ecb_function_ uint16_t
+ ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
+ ecb_function_ ecb_const uint16_t
ecb_bswap16 (uint16_t x)
{
return ecb_rotl16 (x, 8);
}
- ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
- ecb_function_ uint32_t
+ ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
+ ecb_function_ ecb_const uint32_t
ecb_bswap32 (uint32_t x)
{
return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
}
- ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
- ecb_function_ uint64_t
+ ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
+ ecb_function_ ecb_const uint64_t
ecb_bswap64 (uint64_t x)
{
return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
}
#endif
-#if ECB_GCC_VERSION(4,5)
+#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
#define ecb_unreachable() __builtin_unreachable ()
#else
/* this seems to work fine, but gcc always emits a warning for it :/ */
- ecb_inline void ecb_unreachable (void) ecb_noreturn;
- ecb_inline void ecb_unreachable (void) { }
+ ecb_inline ecb_noreturn void ecb_unreachable (void);
+ ecb_inline ecb_noreturn void ecb_unreachable (void) { }
#endif
/* try to tell the compiler that some condition is definitely true */
-#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
+#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
-ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
-ecb_inline unsigned char
+ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
+ecb_inline ecb_const uint32_t
ecb_byteorder_helper (void)
{
- const uint32_t u = 0x11223344;
- return *(unsigned char *)&u;
+ /* the union code still generates code under pressure in gcc, */
+ /* but less than using pointers, and always seems to */
+ /* successfully return a constant. */
+ /* the reason why we have this horrible preprocessor mess */
+ /* is to avoid it in all cases, at least on common architectures */
+ /* or when using a recent enough gcc version (>= 4.6) */
+#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
+ || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
+ #define ECB_LITTLE_ENDIAN 1
+ return 0x44332211;
+#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
+ || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
+ #define ECB_BIG_ENDIAN 1
+ return 0x11223344;
+#else
+ union
+ {
+ uint8_t c[4];
+ uint32_t u;
+ } u = { 0x11, 0x22, 0x33, 0x44 };
+ return u.u;
+#endif
}
-ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
-ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
-ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
-ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
+ecb_inline ecb_const ecb_bool ecb_big_endian (void);
+ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
+ecb_inline ecb_const ecb_bool ecb_little_endian (void);
+ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
#if ECB_GCC_VERSION(3,0) || ECB_C99
#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
#endif
-#if __cplusplus
+#if ECB_CPP
template<typename T>
static inline T ecb_div_rd (T val, T div)
{
#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
#endif
+ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
+ecb_function_ ecb_const uint32_t
+ecb_binary16_to_binary32 (uint32_t x)
+{
+ unsigned int s = (x & 0x8000) << (31 - 15);
+ int e = (x >> 10) & 0x001f;
+ unsigned int m = x & 0x03ff;
+
+ if (ecb_expect_false (e == 31))
+ /* infinity or NaN */
+ e = 255 - (127 - 15);
+ else if (ecb_expect_false (!e))
+ {
+ if (ecb_expect_true (!m))
+ /* zero, handled by code below by forcing e to 0 */
+ e = 0 - (127 - 15);
+ else
+ {
+ /* subnormal, renormalise */
+ unsigned int s = 10 - ecb_ld32 (m);
+
+ m = (m << s) & 0x3ff; /* mask implicit bit */
+ e -= s - 1;
+ }
+ }
+
+ /* e and m now are normalised, or zero, (or inf or nan) */
+ e += 127 - 15;
+
+ return s | (e << 23) | (m << (23 - 10));
+}
+
+ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
+ecb_function_ ecb_const uint16_t
+ecb_binary32_to_binary16 (uint32_t x)
+{
+ unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
+ unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
+ unsigned int m = x & 0x007fffff;
+
+ x &= 0x7fffffff;
+
+ /* if it's within range of binary16 normals, use fast path */
+ if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
+ {
+ /* mantissa round-to-even */
+ m += 0x00000fff + ((m >> (23 - 10)) & 1);
+
+ /* handle overflow */
+ if (ecb_expect_false (m >= 0x00800000))
+ {
+ m >>= 1;
+ e += 1;
+ }
+
+ return s | (e << 10) | (m >> (23 - 10));
+ }
+
+ /* handle large numbers and infinity */
+ if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
+ return s | 0x7c00;
+
+ /* handle zero, subnormals and small numbers */
+ if (ecb_expect_true (x < 0x38800000))
+ {
+ /* zero */
+ if (ecb_expect_true (!x))
+ return s;
+
+ /* handle subnormals */
+
+ /* too small, will be zero */
+ if (e < (14 - 24)) /* might not be sharp, but is good enough */
+ return s;
+
+ m |= 0x00800000; /* make implicit bit explicit */
+
+ /* very tricky - we need to round to the nearest e (+10) bit value */
+ {
+ unsigned int bits = 14 - e;
+ unsigned int half = (1 << (bits - 1)) - 1;
+ unsigned int even = (m >> bits) & 1;
+
+ /* if this overflows, we will end up with a normalised number */
+ m = (m + half + even) >> bits;
+ }
+
+ return s | m;
+ }
+
+ /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
+ m >>= 13;
+
+ return s | 0x7c00 | m | !m;
+}
+
+/*******************************************************************************/
+/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
+
+/* basically, everything uses "ieee pure-endian" floating point numbers */
+/* the only noteworthy exception is ancient armle, which uses order 43218765 */
+#if 0 \
+ || __i386 || __i386__ \
+ || ECB_GCC_AMD64 \
+ || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
+ || defined __s390__ || defined __s390x__ \
+ || defined __mips__ \
+ || defined __alpha__ \
+ || defined __hppa__ \
+ || defined __ia64__ \
+ || defined __m68k__ \
+ || defined __m88k__ \
+ || defined __sh__ \
+ || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
+ || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
+ || defined __aarch64__
+ #define ECB_STDFP 1
+ #include <string.h> /* for memcpy */
+#else
+ #define ECB_STDFP 0
+#endif
+
+#ifndef ECB_NO_LIBM
+
+ #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
+
+ /* only the oldest of old doesn't have this one. solaris. */
+ #ifdef INFINITY
+ #define ECB_INFINITY INFINITY
+ #else
+ #define ECB_INFINITY HUGE_VAL
+ #endif
+
+ #ifdef NAN
+ #define ECB_NAN NAN
+ #else
+ #define ECB_NAN ECB_INFINITY
+ #endif
+
+ #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
+ #define ecb_ldexpf(x,e) ldexpf ((x), (e))
+ #define ecb_frexpf(x,e) frexpf ((x), (e))
+ #else
+ #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
+ #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
+ #endif
+
+ /* convert a float to ieee single/binary32 */
+ ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
+ ecb_function_ ecb_const uint32_t
+ ecb_float_to_binary32 (float x)
+ {
+ uint32_t r;
+
+ #if ECB_STDFP
+ memcpy (&r, &x, 4);
+ #else
+ /* slow emulation, works for anything but -0 */
+ uint32_t m;
+ int e;
+
+ if (x == 0e0f ) return 0x00000000U;
+ if (x > +3.40282346638528860e+38f) return 0x7f800000U;
+ if (x < -3.40282346638528860e+38f) return 0xff800000U;
+ if (x != x ) return 0x7fbfffffU;
+
+ m = ecb_frexpf (x, &e) * 0x1000000U;
+
+ r = m & 0x80000000U;
+
+ if (r)
+ m = -m;
+
+ if (e <= -126)
+ {
+ m &= 0xffffffU;
+ m >>= (-125 - e);
+ e = -126;
+ }
+
+ r |= (e + 126) << 23;
+ r |= m & 0x7fffffU;
+ #endif
+
+ return r;
+ }
+
+ /* converts an ieee single/binary32 to a float */
+ ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
+ ecb_function_ ecb_const float
+ ecb_binary32_to_float (uint32_t x)
+ {
+ float r;
+
+ #if ECB_STDFP
+ memcpy (&r, &x, 4);
+ #else
+ /* emulation, only works for normals and subnormals and +0 */
+ int neg = x >> 31;
+ int e = (x >> 23) & 0xffU;
+
+ x &= 0x7fffffU;
+
+ if (e)
+ x |= 0x800000U;
+ else
+ e = 1;
+
+ /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
+ r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
+
+ r = neg ? -r : r;
+ #endif
+
+ return r;
+ }
+
+ /* convert a double to ieee double/binary64 */
+ ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
+ ecb_function_ ecb_const uint64_t
+ ecb_double_to_binary64 (double x)
+ {
+ uint64_t r;
+
+ #if ECB_STDFP
+ memcpy (&r, &x, 8);
+ #else
+ /* slow emulation, works for anything but -0 */
+ uint64_t m;
+ int e;
+
+ if (x == 0e0 ) return 0x0000000000000000U;
+ if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
+ if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
+ if (x != x ) return 0X7ff7ffffffffffffU;
+
+ m = frexp (x, &e) * 0x20000000000000U;
+
+ r = m & 0x8000000000000000;;
+
+ if (r)
+ m = -m;
+
+ if (e <= -1022)
+ {
+ m &= 0x1fffffffffffffU;
+ m >>= (-1021 - e);
+ e = -1022;
+ }
+
+ r |= ((uint64_t)(e + 1022)) << 52;
+ r |= m & 0xfffffffffffffU;
+ #endif
+
+ return r;
+ }
+
+ /* converts an ieee double/binary64 to a double */
+ ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
+ ecb_function_ ecb_const double
+ ecb_binary64_to_double (uint64_t x)
+ {
+ double r;
+
+ #if ECB_STDFP
+ memcpy (&r, &x, 8);
+ #else
+ /* emulation, only works for normals and subnormals and +0 */
+ int neg = x >> 63;
+ int e = (x >> 52) & 0x7ffU;
+
+ x &= 0xfffffffffffffU;
+
+ if (e)
+ x |= 0x10000000000000U;
+ else
+ e = 1;
+
+ /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
+ r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
+
+ r = neg ? -r : r;
+ #endif
+
+ return r;
+ }
+
+ /* convert a float to ieee half/binary16 */
+ ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
+ ecb_function_ ecb_const uint16_t
+ ecb_float_to_binary16 (float x)
+ {
+ return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
+ }
+
+ /* convert an ieee half/binary16 to float */
+ ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
+ ecb_function_ ecb_const float
+ ecb_binary16_to_float (uint16_t x)
+ {
+ return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
+ }
+
+#endif
+
#endif
/* ECB.H END */
#if EV_FEATURE_CODE
# define inline_speed ecb_inline
#else
-# define inline_speed static noinline
+# define inline_speed noinline static
#endif
#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
#include <float.h>
/* a floor() replacement function, should be independent of ev_tstamp type */
-static ev_tstamp noinline
+noinline
+static ev_tstamp
ev_floor (ev_tstamp v)
{
/* the choice of shift factor is not terribly important */
# include <sys/utsname.h>
#endif
-static unsigned int noinline ecb_cold
+noinline ecb_cold
+static unsigned int
ev_linux_version (void)
{
#ifdef __linux
/*****************************************************************************/
#if EV_AVOID_STDIO
-static void noinline ecb_cold
+noinline ecb_cold
+static void
ev_printerr (const char *msg)
{
write (STDERR_FILENO, msg, strlen (msg));
static void (*syserr_cb)(const char *msg) EV_THROW;
-void ecb_cold
-ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
+ecb_cold
+void
+ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
{
syserr_cb = cb;
}
-static void noinline ecb_cold
+noinline ecb_cold
+static void
ev_syserr (const char *msg)
{
if (!msg)
}
static void *
-ev_realloc_emul (void *ptr, long size)
+ev_realloc_emul (void *ptr, long size) EV_THROW
{
-#if __GLIBC__
- return realloc (ptr, size);
-#else
/* some systems, notably openbsd and darwin, fail to properly
* implement realloc (x, 0) (as required by both ansi c-89 and
* the single unix specification, so work around them here.
+ * recently, also (at least) fedora and debian started breaking it,
+ * despite documenting it otherwise.
*/
if (size)
free (ptr);
return 0;
-#endif
}
static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
-void ecb_cold
-ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
+ecb_cold
+void
+ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
{
alloc = cb;
}
return ncur;
}
-static void * noinline ecb_cold
+noinline ecb_cold
+static void *
array_realloc (int elem, void *base, int *cur, int cnt)
{
*cur = array_nextsize (elem, *cur, cnt);
#define array_needsize(type,base,cur,cnt,init) \
if (expect_false ((cnt) > (cur))) \
{ \
- int ecb_unused ocur_ = (cur); \
+ ecb_unused int ocur_ = (cur); \
(base) = (type *)array_realloc \
(sizeof (type), (base), &(cur), (cnt)); \
init ((base) + (ocur_), (cur) - ocur_); \
/*****************************************************************************/
/* dummy callback for pending events */
-static void noinline
+noinline
+static void
pendingcb (EV_P_ ev_prepare *w, int revents)
{
}
-void noinline
+noinline
+void
ev_feed_event (EV_P_ void *w, int revents) EV_THROW
{
W w_ = (W)w;
}
/* something about the given fd changed */
-inline_size void
+inline_size
+void
fd_change (EV_P_ int fd, int flags)
{
unsigned char reify = anfds [fd].reify;
}
/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
-inline_speed void ecb_cold
+inline_speed ecb_cold void
fd_kill (EV_P_ int fd)
{
ev_io *w;
}
/* check whether the given fd is actually valid, for error recovery */
-inline_size int ecb_cold
+inline_size ecb_cold int
fd_valid (int fd)
{
#ifdef _WIN32
}
/* called on EBADF to verify fds */
-static void noinline ecb_cold
+noinline ecb_cold
+static void
fd_ebadf (EV_P)
{
int fd;
}
/* called on ENOMEM in select/poll to kill some fds and retry */
-static void noinline ecb_cold
+noinline ecb_cold
+static void
fd_enomem (EV_P)
{
int fd;
}
/* usually called after fork if backend needs to re-arm all fds from scratch */
-static void noinline
+noinline
+static void
fd_rearm_all (EV_P)
{
int fd;
#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
-static void noinline ecb_cold
+noinline ecb_cold
+static void
evpipe_init (EV_P)
{
if (!ev_is_active (&pipe_w))
{
+ int fds [2];
+
# if EV_USE_EVENTFD
- evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
- if (evfd < 0 && errno == EINVAL)
- evfd = eventfd (0, 0);
+ fds [0] = -1;
+ fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
+ if (fds [1] < 0 && errno == EINVAL)
+ fds [1] = eventfd (0, 0);
- if (evfd >= 0)
+ if (fds [1] < 0)
+# endif
{
- evpipe [0] = -1;
- fd_intern (evfd); /* doing it twice doesn't hurt */
- ev_io_set (&pipe_w, evfd, EV_READ);
+ while (pipe (fds))
+ ev_syserr ("(libev) error creating signal/async pipe");
+
+ fd_intern (fds [0]);
}
+
+ evpipe [0] = fds [0];
+
+ if (evpipe [1] < 0)
+ evpipe [1] = fds [1]; /* first call, set write fd */
else
-# endif
{
- while (pipe (evpipe))
- ev_syserr ("(libev) error creating signal/async pipe");
+ /* on subsequent calls, do not change evpipe [1] */
+ /* so that evpipe_write can always rely on its value. */
+ /* this branch does not do anything sensible on windows, */
+ /* so must not be executed on windows */
- fd_intern (evpipe [0]);
- fd_intern (evpipe [1]);
- ev_io_set (&pipe_w, evpipe [0], EV_READ);
+ dup2 (fds [1], evpipe [1]);
+ close (fds [1]);
}
+ fd_intern (evpipe [1]);
+
+ ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
ev_io_start (EV_A_ &pipe_w);
ev_unref (EV_A); /* watcher should not keep loop alive */
}
return;
*flag = 1;
-
ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
pipe_write_skipped = 1;
{
int old_errno;
- pipe_write_skipped = 0; /* just an optimisation, no fence needed */
+ pipe_write_skipped = 0;
+ ECB_MEMORY_FENCE_RELEASE;
old_errno = errno; /* save errno because write will clobber it */
#if EV_USE_EVENTFD
- if (evfd >= 0)
+ if (evpipe [0] < 0)
{
uint64_t counter = 1;
- write (evfd, &counter, sizeof (uint64_t));
+ write (evpipe [1], &counter, sizeof (uint64_t));
}
else
#endif
if (revents & EV_READ)
{
#if EV_USE_EVENTFD
- if (evfd >= 0)
+ if (evpipe [0] < 0)
{
uint64_t counter;
- read (evfd, &counter, sizeof (uint64_t));
+ read (evpipe [1], &counter, sizeof (uint64_t));
}
else
#endif
{
sig_pending = 0;
- ECB_MEMORY_FENCE_RELEASE;
+ ECB_MEMORY_FENCE;
for (i = EV_NSIG - 1; i--; )
if (expect_false (signals [i].pending))
{
async_pending = 0;
- ECB_MEMORY_FENCE_RELEASE;
+ ECB_MEMORY_FENCE;
for (i = asynccnt; i--; )
if (asyncs [i]->sent)
{
asyncs [i]->sent = 0;
+ ECB_MEMORY_FENCE_RELEASE;
ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
}
}
ev_feed_signal (int signum) EV_THROW
{
#if EV_MULTIPLICITY
- EV_P = signals [signum - 1].loop;
+ EV_P;
+ ECB_MEMORY_FENCE_ACQUIRE;
+ EV_A = signals [signum - 1].loop;
if (!EV_A)
return;
#endif
- if (!ev_active (&pipe_w))
- return;
-
signals [signum - 1].pending = 1;
evpipe_write (EV_A_ &sig_pending);
}
ev_feed_signal (signum);
}
-void noinline
+noinline
+void
ev_feed_signal_event (EV_P_ int signum) EV_THROW
{
WL w;
- if (expect_false (signum <= 0 || signum > EV_NSIG))
+ if (expect_false (signum <= 0 || signum >= EV_NSIG))
return;
--signum;
#endif
signals [signum].pending = 0;
+ ECB_MEMORY_FENCE_RELEASE;
for (w = signals [signum].head; w; w = w->next)
ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
# include "ev_select.c"
#endif
-int ecb_cold
+ecb_cold int
ev_version_major (void) EV_THROW
{
return EV_VERSION_MAJOR;
}
-int ecb_cold
+ecb_cold int
ev_version_minor (void) EV_THROW
{
return EV_VERSION_MINOR;
}
/* return true if we are running with elevated privileges and should ignore env variables */
-int inline_size ecb_cold
+inline_size ecb_cold int
enable_secure (void)
{
#ifdef _WIN32
#endif
}
-unsigned int ecb_cold
+ecb_cold
+unsigned int
ev_supported_backends (void) EV_THROW
{
unsigned int flags = 0;
return flags;
}
-unsigned int ecb_cold
+ecb_cold
+unsigned int
ev_recommended_backends (void) EV_THROW
{
unsigned int flags = ev_supported_backends ();
return flags;
}
-unsigned int ecb_cold
+ecb_cold
+unsigned int
ev_embeddable_backends (void) EV_THROW
{
int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
}
void
-ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
+ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
{
invoke_cb = invoke_pending_cb;
}
#endif
/* initialise a loop structure, must be zero-initialised */
-static void noinline ecb_cold
+noinline ecb_cold
+static void
loop_init (EV_P_ unsigned int flags) EV_THROW
{
if (!backend)
#endif
pipe_write_skipped = 0;
pipe_write_wanted = 0;
+ evpipe [0] = -1;
+ evpipe [1] = -1;
#if EV_USE_INOTIFY
fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
#endif
}
/* free up a loop structure */
-void ecb_cold
+ecb_cold
+void
ev_loop_destroy (EV_P)
{
int i;
/*ev_ref (EV_A);*/
/*ev_io_stop (EV_A_ &pipe_w);*/
-#if EV_USE_EVENTFD
- if (evfd >= 0)
- close (evfd);
-#endif
-
- if (evpipe [0] >= 0)
- {
- EV_WIN32_CLOSE_FD (evpipe [0]);
- EV_WIN32_CLOSE_FD (evpipe [1]);
- }
+ if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
+ if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
}
#if EV_USE_SIGNALFD
infy_fork (EV_A);
#endif
- if (ev_is_active (&pipe_w))
+#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
+ if (ev_is_active (&pipe_w) && postfork != 2)
{
/* pipe_write_wanted must be false now, so modifying fd vars should be safe */
ev_ref (EV_A);
ev_io_stop (EV_A_ &pipe_w);
-#if EV_USE_EVENTFD
- if (evfd >= 0)
- close (evfd);
-#endif
-
if (evpipe [0] >= 0)
- {
- EV_WIN32_CLOSE_FD (evpipe [0]);
- EV_WIN32_CLOSE_FD (evpipe [1]);
- }
+ EV_WIN32_CLOSE_FD (evpipe [0]);
-#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
evpipe_init (EV_A);
- /* now iterate over everything, in case we missed something */
- pipecb (EV_A_ &pipe_w, EV_READ);
-#endif
+ /* iterate over everything, in case we missed something before */
+ ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
}
+#endif
postfork = 0;
}
#if EV_MULTIPLICITY
-struct ev_loop * ecb_cold
+ecb_cold
+struct ev_loop *
ev_loop_new (unsigned int flags) EV_THROW
{
EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
#endif /* multiplicity */
#if EV_VERIFY
-static void noinline ecb_cold
+noinline ecb_cold
+static void
verify_watcher (EV_P_ W w)
{
assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
}
-static void noinline ecb_cold
+noinline ecb_cold
+static void
verify_heap (EV_P_ ANHE *heap, int N)
{
int i;
}
}
-static void noinline ecb_cold
+noinline ecb_cold
+static void
array_verify (EV_P_ W *ws, int cnt)
{
while (cnt--)
#endif
#if EV_MULTIPLICITY
-struct ev_loop * ecb_cold
+ecb_cold
+struct ev_loop *
#else
int
#endif
void
ev_loop_fork (EV_P) EV_THROW
{
- postfork = 1; /* must be in line with ev_default_fork */
+ postfork = 1;
}
/*****************************************************************************/
return count;
}
-void noinline
+noinline
+void
ev_invoke_pending (EV_P)
{
- for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
- while (pendingcnt [pendingpri])
- {
- ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
+ pendingpri = NUMPRI;
- p->w->pending = 0;
- EV_CB_INVOKE (p->w, p->events);
- EV_FREQUENT_CHECK;
- }
+ while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
+ {
+ --pendingpri;
+
+ while (pendingcnt [pendingpri])
+ {
+ ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
+
+ p->w->pending = 0;
+ EV_CB_INVOKE (p->w, p->events);
+ EV_FREQUENT_CHECK;
+ }
+ }
}
#if EV_IDLE_ENABLE
#if EV_PERIODIC_ENABLE
-static void noinline
+noinline
+static void
periodic_recalc (EV_P_ ev_periodic *w)
{
ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
{
- int feed_count = 0;
-
do
{
ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
/* simply recalculate all periodics */
/* TODO: maybe ensure that at least one event happens when jumping forward? */
-static void noinline ecb_cold
+noinline ecb_cold
+static void
periodics_reschedule (EV_P)
{
int i;
#endif
/* adjust all timers by a given offset */
-static void noinline ecb_cold
+noinline ecb_cold
+static void
timers_reschedule (EV_P_ ev_tstamp adjust)
{
int i;
pipe_write_wanted = 0; /* just an optimisation, no fence needed */
+ ECB_MEMORY_FENCE_ACQUIRE;
if (pipe_write_skipped)
{
assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
/*****************************************************************************/
-void noinline
+noinline
+void
ev_io_start (EV_P_ ev_io *w) EV_THROW
{
int fd = w->fd;
EV_FREQUENT_CHECK;
}
-void noinline
+noinline
+void
ev_io_stop (EV_P_ ev_io *w) EV_THROW
{
clear_pending (EV_A_ (W)w);
EV_FREQUENT_CHECK;
}
-void noinline
+noinline
+void
ev_timer_start (EV_P_ ev_timer *w) EV_THROW
{
if (expect_false (ev_is_active (w)))
/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
}
-void noinline
+noinline
+void
ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
{
clear_pending (EV_A_ (W)w);
EV_FREQUENT_CHECK;
}
-void noinline
+noinline
+void
ev_timer_again (EV_P_ ev_timer *w) EV_THROW
{
EV_FREQUENT_CHECK;
}
#if EV_PERIODIC_ENABLE
-void noinline
+noinline
+void
ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
{
if (expect_false (ev_is_active (w)))
/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
}
-void noinline
+noinline
+void
ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
{
clear_pending (EV_A_ (W)w);
EV_FREQUENT_CHECK;
}
-void noinline
+noinline
+void
ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
{
/* TODO: use adjustheap and recalculation */
#if EV_SIGNAL_ENABLE
-void noinline
+noinline
+void
ev_signal_start (EV_P_ ev_signal *w) EV_THROW
{
if (expect_false (ev_is_active (w)))
!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
signals [w->signum - 1].loop = EV_A;
+ ECB_MEMORY_FENCE_RELEASE;
#endif
EV_FREQUENT_CHECK;
EV_FREQUENT_CHECK;
}
-void noinline
+noinline
+void
ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
{
clear_pending (EV_A_ (W)w);
#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
#define MIN_STAT_INTERVAL 0.1074891
-static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
+noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
#if EV_USE_INOTIFY
/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
-static void noinline
+noinline
+static void
infy_add (EV_P_ ev_stat *w)
{
- 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);
+ w->wd = inotify_add_watch (fs_fd, w->path,
+ IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
+ | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
+ | IN_DONT_FOLLOW | IN_MASK_ADD);
if (w->wd >= 0)
{
w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
else if (!statfs (w->path, &sfs)
&& (sfs.f_type == 0x1373 /* devfs */
+ || sfs.f_type == 0x4006 /* fat */
+ || sfs.f_type == 0x4d44 /* msdos */
|| sfs.f_type == 0xEF53 /* ext2/3 */
+ || sfs.f_type == 0x72b6 /* jffs2 */
+ || sfs.f_type == 0x858458f6 /* ramfs */
+ || sfs.f_type == 0x5346544e /* ntfs */
|| sfs.f_type == 0x3153464a /* jfs */
+ || sfs.f_type == 0x9123683e /* btrfs */
|| sfs.f_type == 0x52654973 /* reiser3 */
- || sfs.f_type == 0x01021994 /* tempfs */
+ || sfs.f_type == 0x01021994 /* tmpfs */
|| sfs.f_type == 0x58465342 /* xfs */))
w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
else
if (ev_is_active (&w->timer)) ev_unref (EV_A);
}
-static void noinline
+noinline
+static void
infy_del (EV_P_ ev_stat *w)
{
int slot;
inotify_rm_watch (fs_fd, wd);
}
-static void noinline
+noinline
+static void
infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
{
if (slot < 0)
}
}
-inline_size void ecb_cold
+inline_size ecb_cold
+void
ev_check_2625 (EV_P)
{
/* kernels < 2.6.25 are borked
w->attr.st_nlink = 1;
}
-static void noinline
+noinline
+static void
stat_timer_cb (EV_P_ ev_timer *w_, int revents)
{
ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
#endif
#if EV_EMBED_ENABLE
-void noinline
+noinline
+void
ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
{
ev_run (w->other, EVRUN_NOWAIT);
/*****************************************************************************/
#if EV_WALK_ENABLE
-void ecb_cold
+ecb_cold
+void
ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
{
int i, j;
projects / sojka / libev.git / blobdiff