[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.477 by root, Sun Aug 9 00:13:28 2015 UTC vs.
Revision 1.493 by root, Sun Jun 23 02:02:24 2019 UTC

 /*
  * libev event processing core, watcher management
  *
- * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de>
+ * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modifica-
  * tion, are permitted provided that the following conditions are met:
  *
 # else
 #  undef EV_USE_EPOLL
 #  define EV_USE_EPOLL 0
 # endif
+# if HAVE_LINUX_AIO_ABI_H
+#  ifndef EV_USE_LINUXAIO
+#   define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
+#  endif
+# else
+#  undef EV_USE_LINUXAIO
+#  define EV_USE_LINUXAIO 0
+# endif
 # if HAVE_KQUEUE && HAVE_SYS_EVENT_H
 #  ifndef EV_USE_KQUEUE
 #   define EV_USE_KQUEUE EV_FEATURE_BACKENDS
 #  endif
 # else
 #  define EV_USE_EVENTFD 0
 # endif
 #endif
+/* OS X, in its infinite idiocy, actually HARDCODES
+ * a limit of 1024 into their select. Where people have brains,
+ * OS X engineers apparently have a vacuum. Or maybe they were
+ * ordered to have a vacuum, or they do anything for money.
+ * This might help. Or not.
+ * Note that this must be defined early, as other include files
+ * will rely on this define as well.
+ */
+#define _DARWIN_UNLIMITED_SELECT 1
 #include <stdlib.h>
 #include <string.h>
 #include <fcntl.h>
 #include <stddef.h>
 # ifndef EV_SELECT_IS_WINSOCKET
 #  define EV_SELECT_IS_WINSOCKET 1
 # endif
 # undef EV_AVOID_STDIO
 #endif
-/* OS X, in its infinite idiocy, actually HARDCODES
- * a limit of 1024 into their select. Where people have brains,
- * OS X engineers apparently have a vacuum. Or maybe they were
- * ordered to have a vacuum, or they do anything for money.
- * This might help. Or not.
- */
-#define _DARWIN_UNLIMITED_SELECT 1
 /* this block tries to deduce configuration from header-defined symbols and defaults */
 /* try to deduce the maximum number of signals on this platform */
 #if defined EV_NSIG
 #ifndef EV_USE_PORT
 # define EV_USE_PORT 0
 #endif
+#ifndef EV_USE_LINUXAIO
+# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
+#  define EV_USE_LINUXAIO 1
+# else
+#  define EV_USE_LINUXAIO 0
+# endif
+#endif
 #ifndef EV_USE_INOTIFY
 # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
 #  define EV_USE_INOTIFY EV_FEATURE_OS
 # else
 #  define EV_USE_INOTIFY 0
 #ifndef EV_HEAP_CACHE_AT
 # define EV_HEAP_CACHE_AT EV_FEATURE_DATA
 #endif
-#ifdef ANDROID
+#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
 #if !EV_USE_NANOSLEEP
 /* hp-ux has it in sys/time.h, which we unconditionally include above */
 # if !defined _WIN32 && !defined __hpux
 #  include <sys/select.h>
+# endif
+#endif
+#if EV_USE_LINUXAIO
+# include <sys/syscall.h>
+# if !SYS_io_getevents || !EV_USE_EPOLL
+#  undef EV_USE_LINUXAIO
+#  define EV_USE_LINUXAIO 0
 # endif
 #endif
 #if EV_USE_INOTIFY
 # include <sys/statfs.h>
 #ifndef ECB_H
 #define ECB_H
 /* 16 bits major, 16 bits minor */
-#define ECB_VERSION 0x00010004
+#define ECB_VERSION 0x00010005
 #ifdef _WIN32
   typedef   signed char   int8_t;
   typedef unsigned char  uint8_t;
   typedef   signed short  int16_t;
     typedef uint32_t uintptr_t;
     typedef  int32_t  intptr_t;
   #endif
 #else
   #include <inttypes.h>
-  #if UINTMAX_MAX > 0xffffffffU
+  #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
     #define ECB_PTRSIZE 8
   #else
     #define ECB_PTRSIZE 4
   #endif
 #endif
   #define ECB_CLANG_EXTENSION(x) 0
 #endif
 #define ECB_CPP   (__cplusplus+0)
 #define ECB_CPP11 (__cplusplus >= 201103L)
+#define ECB_CPP14 (__cplusplus >= 201402L)
+#define ECB_CPP17 (__cplusplus >= 201703L)
 #if ECB_CPP
   #define ECB_C            0
   #define ECB_STDC_VERSION 0
 #else
   #define ECB_STDC_VERSION __STDC_VERSION__
 #endif
 #define ECB_C99   (ECB_STDC_VERSION >= 199901L)
 #define ECB_C11   (ECB_STDC_VERSION >= 201112L)
+#define ECB_C17   (ECB_STDC_VERSION >= 201710L)
 #if ECB_CPP
   #define ECB_EXTERN_C extern "C"
   #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
   #define ECB_EXTERN_C_END }
 #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 __asm__ __volatile__ (""                        : : : "memory")
-      #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
+      #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ (""                        : : : "memory")
     #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__ ("")
+      #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ (""         : : : "memory")
     #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
       #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__
+       || 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")
 #else
   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 */
 #if ECB_branchless_on_i386
     if (x & 0xff00ff00) r +=  8;
     if (x & 0xffff0000) r += 16;
 #endif
     return r;
+#endif
   }
   ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
   ecb_function_ ecb_const int
   ecb_ctz64 (uint64_t x)
   {
+#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
+    unsigned long r;
+    _BitScanForward64 (&r, x);
+    return (int)r;
+#else
-    int shift = x & 0xffffffffU ? 0 : 32;
+    int shift = x & 0xffffffff ? 0 : 32;
     return ecb_ctz32 (x >> shift) + shift;
+#endif
   }
   ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
   ecb_function_ ecb_const int
   ecb_popcount32 (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 >>  8) { x >>=  8; r +=  8; }
     if (x >>  4) { x >>=  4; r +=  4; }
     if (x >>  2) { x >>=  2; r +=  2; }
     if (x >>  1) {           r +=  1; }
     return r;
+#endif
   }
   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_ 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)); }
 #endif
 /* try to tell the compiler that some condition is definitely true */
 #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
-ecb_inline ecb_const unsigned char ecb_byteorder_helper (void);
+ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
-ecb_inline ecb_const unsigned char
+ecb_inline ecb_const uint32_t
 ecb_byteorder_helper (void)
 {
   /* 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 ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64
-  return 0x44;
-#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+#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 0x44;
+  return 0x44332211;
-#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
+      || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
+  #define ECB_BIG_ENDIAN 1
-  return 0x11;
+  return 0x11223344;
 #else
   union
   {
+    uint8_t c[4];
-    uint32_t i;
+    uint32_t u;
-    uint8_t c;
-  } u = { 0x11223344 };
+  } u = { 0x11, 0x22, 0x33, 0x44 };
-  return u.c;
+  return u.u;
 #endif
 }
 ecb_inline ecb_const ecb_bool ecb_big_endian    (void);
-ecb_inline ecb_const ecb_bool ecb_big_endian    (void) { return ecb_byteorder_helper () == 0x11; }
+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 () == 0x44; }
+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))
 #else
   #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
     return N;
   }
 #else
   #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 */
   #else
     #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
     #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
   #endif
-  /* converts an ieee half/binary16 to a 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)
-  {
-    int e = (x >> 10) & 0x1f;
-    int m = x & 0x3ff;
-    float r;
-    if      (!e     ) r = ecb_ldexpf (m        ,    -24);
-    else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25);
-    else if (m      ) r = ECB_NAN;
-    else              r = ECB_INFINITY;
-    return x & 0x8000 ? -r : r;
-  }
   /* 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)
   {
       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
 #define inline_size        ecb_inline
 #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)
 #if EV_MINPRI == EV_MAXPRI
 # define ABSPRI(w) (((W)w), 0)
 #else
 # define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
 #endif
-#define EMPTY       /* required for microsofts broken pseudo-c compiler */
+#define EMPTY /* required for microsofts broken pseudo-c compiler */
-#define EMPTY2(a,b) /* used to suppress some warnings */
 typedef ev_watcher *W;
 typedef ev_watcher_list *WL;
 typedef ev_watcher_time *WT;
 # include "ev_win32.c"
 #endif
 /*****************************************************************************/
+#if EV_USE_LINUXAIO
+# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
+#endif
 /* define a suitable floor function (only used by periodics atm) */
 #if EV_USE_FLOOR
 # include <math.h>
 # define ev_floor(v) floor (v)
 #else
 #include <float.h>
 /* a floor() replacement function, should be independent of ev_tstamp type */
+noinline
-static ev_tstamp noinline
+static ev_tstamp
 ev_floor (ev_tstamp v)
 {
   /* the choice of shift factor is not terribly important */
 #if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
   const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
 #ifdef __linux
 # include <sys/utsname.h>
 #endif
-static unsigned int noinline ecb_cold
+noinline ecb_cold
+static unsigned int
 ev_linux_version (void)
 {
 #ifdef __linux
   unsigned int v = 0;
   struct utsname buf;
 }
 /*****************************************************************************/
 #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));
 }
 #endif
-static void (*syserr_cb)(const char *msg) EV_THROW;
+static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
-void ecb_cold
+ecb_cold
+void
-ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
+ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
 {
   syserr_cb = cb;
 }
-static void noinline ecb_cold
+noinline ecb_cold
+static void
 ev_syserr (const char *msg)
 {
   if (!msg)
     msg = "(libev) system error";
       abort ();
     }
 }
 static void *
-ev_realloc_emul (void *ptr, long size) EV_THROW
+ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
 {
   /* 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,
   free (ptr);
   return 0;
 }
-static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
+static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
-void ecb_cold
+ecb_cold
+void
-ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
+ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
 {
   alloc = cb;
 }
 inline_speed void *
 typedef struct
 {
   WL head;
   unsigned char events; /* the events watched for */
   unsigned char reify;  /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
-  unsigned char emask;  /* the epoll backend stores the actual kernel mask in here */
+  unsigned char emask;  /* some backends store the actual kernel mask in here */
   unsigned char unused;
 #if EV_USE_EPOLL
   unsigned int egen;    /* generation counter to counter epoll bugs */
 #endif
 #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
 /*****************************************************************************/
 #ifndef EV_HAVE_EV_TIME
 ev_tstamp
-ev_time (void) EV_THROW
+ev_time (void) EV_NOEXCEPT
 {
 #if EV_USE_REALTIME
   if (expect_true (have_realtime))
     {
       struct timespec ts;
   return ev_time ();
 }
 #if EV_MULTIPLICITY
 ev_tstamp
-ev_now (EV_P) EV_THROW
+ev_now (EV_P) EV_NOEXCEPT
 {
   return ev_rt_now;
 }
 #endif
 void
-ev_sleep (ev_tstamp delay) EV_THROW
+ev_sleep (ev_tstamp delay) EV_NOEXCEPT
 {
   if (delay > 0.)
     {
 #if EV_USE_NANOSLEEP
       struct timespec ts;
       EV_TS_SET (ts, delay);
       nanosleep (&ts, 0);
 #elif defined _WIN32
+      /* maybe this should round up, as ms is very low resolution */
+      /* compared to select (µs) or nanosleep (ns) */
       Sleep ((unsigned long)(delay * 1e3));
 #else
       struct timeval tv;
       /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
     }
   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);
   return ev_realloc (base, elem * *cur);
 }
+#define array_needsize_noinit(base,count)
-#define array_init_zero(base,count)	\
+#define array_needsize_zerofill(base,count)	\
   memset ((void *)(base), 0, sizeof (*(base)) * (count))
 #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_);			\
     }
   ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
 /*****************************************************************************/
 /* 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
+ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
 {
   W w_ = (W)w;
   int pri = ABSPRI (w_);
   if (expect_false (w_->pending))
     pendings [pri][w_->pending - 1].events |= revents;
   else
     {
       w_->pending = ++pendingcnt [pri];
-      array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
+      array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
       pendings [pri][w_->pending - 1].w      = w_;
       pendings [pri][w_->pending - 1].events = revents;
     }
   pendingpri = NUMPRI - 1;
 }
 inline_speed void
 feed_reverse (EV_P_ W w)
 {
-  array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
+  array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
   rfeeds [rfeedcnt++] = w;
 }
 inline_size void
 feed_reverse_done (EV_P_ int revents)
   if (expect_true (!anfd->reify))
     fd_event_nocheck (EV_A_ fd, revents);
 }
 void
-ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
+ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
 {
   if (fd >= 0 && fd < anfdmax)
     fd_event_nocheck (EV_A_ fd, revents);
 }
   fdchangecnt = 0;
 }
 /* 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;
   anfds [fd].reify |= flags;
   if (expect_true (!reify))
     {
       ++fdchangecnt;
-      array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
+      array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
       fdchanges [fdchangecnt - 1] = fd;
     }
 }
 /* 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;
   while ((w = (ev_io *)anfds [fd].head))
       ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
     }
 }
 /* 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
   return EV_FD_TO_WIN32_HANDLE (fd) != -1;
 #else
   return fcntl (fd, F_GETFD) != -1;
 #endif
 }
 /* called on EBADF to verify fds */
-static void noinline ecb_cold
+noinline ecb_cold
+static void
 fd_ebadf (EV_P)
 {
   int fd;
   for (fd = 0; fd < anfdmax; ++fd)
       if (!fd_valid (fd) && errno == EBADF)
         fd_kill (EV_A_ 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;
   for (fd = anfdmax; fd--; )
         break;
       }
 }
 /* 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;
   for (fd = 0; fd < anfdmax; ++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];
 #endif
         {
 #ifdef _WIN32
           WSABUF buf;
           DWORD sent;
-          buf.buf = &buf;
+          buf.buf = (char *)&buf;
           buf.len = 1;
           WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
 #else
           write (evpipe [1], &(evpipe [1]), 1);
 #endif
 }
 /*****************************************************************************/
 void
-ev_feed_signal (int signum) EV_THROW
+ev_feed_signal (int signum) EV_NOEXCEPT
 {
 #if EV_MULTIPLICITY
   EV_P;
   ECB_MEMORY_FENCE_ACQUIRE;
   EV_A = signals [signum - 1].loop;
 #endif
   ev_feed_signal (signum);
 }
-void noinline
+noinline
+void
-ev_feed_signal_event (EV_P_ int signum) EV_THROW
+ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
 {
   WL w;
   if (expect_false (signum <= 0 || signum >= EV_NSIG))
     return;
 # include "ev_kqueue.c"
 #endif
 #if EV_USE_EPOLL
 # include "ev_epoll.c"
 #endif
+#if EV_USE_LINUXAIO
+# include "ev_linuxaio.c"
+#endif
 #if EV_USE_POLL
 # include "ev_poll.c"
 #endif
 #if EV_USE_SELECT
 # include "ev_select.c"
 #endif
-int ecb_cold
+ecb_cold int
-ev_version_major (void) EV_THROW
+ev_version_major (void) EV_NOEXCEPT
 {
   return EV_VERSION_MAJOR;
 }
-int ecb_cold
+ecb_cold int
-ev_version_minor (void) EV_THROW
+ev_version_minor (void) EV_NOEXCEPT
 {
   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
   return 0;
 #else
   return getuid () != geteuid ()
       || getgid () != getegid ();
 #endif
 }
-unsigned int ecb_cold
+ecb_cold
+unsigned int
-ev_supported_backends (void) EV_THROW
+ev_supported_backends (void) EV_NOEXCEPT
 {
   unsigned int flags = 0;
-  if (EV_USE_PORT  ) flags |= EVBACKEND_PORT;
+  if (EV_USE_PORT    ) flags |= EVBACKEND_PORT;
-  if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
+  if (EV_USE_KQUEUE  ) flags |= EVBACKEND_KQUEUE;
-  if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
+  if (EV_USE_EPOLL   ) flags |= EVBACKEND_EPOLL;
+  if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
-  if (EV_USE_POLL  ) flags |= EVBACKEND_POLL;
+  if (EV_USE_POLL    ) flags |= EVBACKEND_POLL;
-  if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
+  if (EV_USE_SELECT  ) flags |= EVBACKEND_SELECT;
   return flags;
 }
-unsigned int ecb_cold
+ecb_cold
+unsigned int
-ev_recommended_backends (void) EV_THROW
+ev_recommended_backends (void) EV_NOEXCEPT
 {
   unsigned int flags = ev_supported_backends ();
 #ifndef __NetBSD__
   /* kqueue is borked on everything but netbsd apparently */
 #endif
 #ifdef __FreeBSD__
   flags &= ~EVBACKEND_POLL;   /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
 #endif
+  /* TODO: linuxaio is very experimental */
+  flags &= ~EVBACKEND_LINUXAIO;
   return flags;
 }
-unsigned int ecb_cold
+ecb_cold
+unsigned int
-ev_embeddable_backends (void) EV_THROW
+ev_embeddable_backends (void) EV_NOEXCEPT
 {
   int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
   /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
   if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
   return flags;
 }
 unsigned int
-ev_backend (EV_P) EV_THROW
+ev_backend (EV_P) EV_NOEXCEPT
 {
   return backend;
 }
 #if EV_FEATURE_API
 unsigned int
-ev_iteration (EV_P) EV_THROW
+ev_iteration (EV_P) EV_NOEXCEPT
 {
   return loop_count;
 }
 unsigned int
-ev_depth (EV_P) EV_THROW
+ev_depth (EV_P) EV_NOEXCEPT
 {
   return loop_depth;
 }
 void
-ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
+ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
 {
   io_blocktime = interval;
 }
 void
-ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
+ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
 {
   timeout_blocktime = interval;
 }
 void
-ev_set_userdata (EV_P_ void *data) EV_THROW
+ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
 {
   userdata = data;
 }
 void *
-ev_userdata (EV_P) EV_THROW
+ev_userdata (EV_P) EV_NOEXCEPT
 {
   return userdata;
 }
 void
-ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
+ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
 {
   invoke_cb = invoke_pending_cb;
 }
 void
-ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
+ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
 {
   release_cb = release;
   acquire_cb = acquire;
 }
 #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
+loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
 {
   if (!backend)
     {
       origflags = flags;
       if (!(flags & EVBACKEND_MASK))
         flags |= ev_recommended_backends ();
 #if EV_USE_IOCP
-      if (!backend && (flags & EVBACKEND_IOCP  )) backend = iocp_init   (EV_A_ flags);
+      if (!backend && (flags & EVBACKEND_IOCP    )) backend = iocp_init      (EV_A_ flags);
 #endif
 #if EV_USE_PORT
-      if (!backend && (flags & EVBACKEND_PORT  )) backend = port_init   (EV_A_ flags);
+      if (!backend && (flags & EVBACKEND_PORT    )) backend = port_init      (EV_A_ flags);
 #endif
 #if EV_USE_KQUEUE
-      if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
+      if (!backend && (flags & EVBACKEND_KQUEUE  )) backend = kqueue_init    (EV_A_ flags);
+#endif
+#if EV_USE_LINUXAIO
+      if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init  (EV_A_ flags);
 #endif
 #if EV_USE_EPOLL
-      if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init  (EV_A_ flags);
+      if (!backend && (flags & EVBACKEND_EPOLL   )) backend = epoll_init     (EV_A_ flags);
 #endif
 #if EV_USE_POLL
-      if (!backend && (flags & EVBACKEND_POLL  )) backend = poll_init   (EV_A_ flags);
+      if (!backend && (flags & EVBACKEND_POLL    )) backend = poll_init      (EV_A_ flags);
 #endif
 #if EV_USE_SELECT
-      if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
+      if (!backend && (flags & EVBACKEND_SELECT  )) backend = select_init    (EV_A_ flags);
 #endif
       ev_prepare_init (&pending_w, pendingcb);
 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
 #endif
     }
 }
 /* free up a loop structure */
-void ecb_cold
+ecb_cold
+void
 ev_loop_destroy (EV_P)
 {
   int i;
 #if EV_MULTIPLICITY
   if (backend_fd >= 0)
     close (backend_fd);
 #if EV_USE_IOCP
-  if (backend == EVBACKEND_IOCP  ) iocp_destroy   (EV_A);
+  if (backend == EVBACKEND_IOCP    ) iocp_destroy     (EV_A);
 #endif
 #if EV_USE_PORT
-  if (backend == EVBACKEND_PORT  ) port_destroy   (EV_A);
+  if (backend == EVBACKEND_PORT    ) port_destroy     (EV_A);
 #endif
 #if EV_USE_KQUEUE
-  if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
+  if (backend == EVBACKEND_KQUEUE  ) kqueue_destroy   (EV_A);
+#endif
+#if EV_USE_LINUXAIO
+  if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
 #endif
 #if EV_USE_EPOLL
-  if (backend == EVBACKEND_EPOLL ) epoll_destroy  (EV_A);
+  if (backend == EVBACKEND_EPOLL   ) epoll_destroy    (EV_A);
 #endif
 #if EV_USE_POLL
-  if (backend == EVBACKEND_POLL  ) poll_destroy   (EV_A);
+  if (backend == EVBACKEND_POLL    ) poll_destroy     (EV_A);
 #endif
 #if EV_USE_SELECT
-  if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
+  if (backend == EVBACKEND_SELECT  ) select_destroy   (EV_A);
 #endif
   for (i = NUMPRI; i--; )
     {
       array_free (pending, [i]);
 inline_size void
 loop_fork (EV_P)
 {
 #if EV_USE_PORT
-  if (backend == EVBACKEND_PORT  ) port_fork   (EV_A);
+  if (backend == EVBACKEND_PORT    ) port_fork     (EV_A);
 #endif
 #if EV_USE_KQUEUE
-  if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
+  if (backend == EVBACKEND_KQUEUE  ) kqueue_fork   (EV_A);
+#endif
+#if EV_USE_LINUXAIO
+  if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
 #endif
 #if EV_USE_EPOLL
-  if (backend == EVBACKEND_EPOLL ) epoll_fork  (EV_A);
+  if (backend == EVBACKEND_EPOLL   ) epoll_fork    (EV_A);
 #endif
 #if EV_USE_INOTIFY
   infy_fork (EV_A);
 #endif
 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
-  if (ev_is_active (&pipe_w))
+  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);
   postfork = 0;
 }
 #if EV_MULTIPLICITY
+ecb_cold
-struct ev_loop * ecb_cold
+struct ev_loop *
-ev_loop_new (unsigned int flags) EV_THROW
+ev_loop_new (unsigned int flags) EV_NOEXCEPT
 {
   EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
   memset (EV_A, 0, sizeof (struct ev_loop));
   loop_init (EV_A_ flags);
 }
 #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));
   if (w->pending)
     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;
   for (i = HEAP0; i < N + HEAP0; ++i)
       verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
     }
 }
-static void noinline ecb_cold
+noinline ecb_cold
+static void
 array_verify (EV_P_ W *ws, int cnt)
 {
   while (cnt--)
     {
       assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
 }
 #endif
 #if EV_FEATURE_API
 void ecb_cold
-ev_verify (EV_P) EV_THROW
+ev_verify (EV_P) EV_NOEXCEPT
 {
 #if EV_VERIFY
   int i;
   WL w, w2;
 #endif
 }
 #endif
 #if EV_MULTIPLICITY
+ecb_cold
-struct ev_loop * ecb_cold
+struct ev_loop *
 #else
 int
 #endif
-ev_default_loop (unsigned int flags) EV_THROW
+ev_default_loop (unsigned int flags) EV_NOEXCEPT
 {
   if (!ev_default_loop_ptr)
     {
 #if EV_MULTIPLICITY
       EV_P = ev_default_loop_ptr = &default_loop_struct;
   return ev_default_loop_ptr;
 }
 void
-ev_loop_fork (EV_P) EV_THROW
+ev_loop_fork (EV_P) EV_NOEXCEPT
 {
   postfork = 1;
 }
 /*****************************************************************************/
 {
   EV_CB_INVOKE ((W)w, revents);
 }
 unsigned int
-ev_pending_count (EV_P) EV_THROW
+ev_pending_count (EV_P) EV_NOEXCEPT
 {
   int pri;
   unsigned int count = 0;
   for (pri = NUMPRI; pri--; )
     count += pendingcnt [pri];
   return count;
 }
-void noinline
+noinline
+void
 ev_invoke_pending (EV_P)
 {
   pendingpri = NUMPRI;
-  while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
+  do
     {
       --pendingpri;
+      /* pendingpri possibly gets modified in the inner loop */
       while (pendingcnt [pendingpri])
         {
           ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
           p->w->pending = 0;
           EV_CB_INVOKE (p->w, p->events);
           EV_FREQUENT_CHECK;
         }
     }
+  while (pendingpri);
 }
 #if EV_IDLE_ENABLE
 /* make idle watchers pending. this handles the "call-idle */
 /* only when higher priorities are idle" logic */
     }
 }
 #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;
   ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
     }
 }
 /* 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;
   /* adjust periodics after time jump */
   reheap (periodics, periodiccnt);
 }
 #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;
   for (i = 0; i < timercnt; ++i)
   return activecnt;
 }
 void
-ev_break (EV_P_ int how) EV_THROW
+ev_break (EV_P_ int how) EV_NOEXCEPT
 {
   loop_done = how;
 }
 void
-ev_ref (EV_P) EV_THROW
+ev_ref (EV_P) EV_NOEXCEPT
 {
   ++activecnt;
 }
 void
-ev_unref (EV_P) EV_THROW
+ev_unref (EV_P) EV_NOEXCEPT
 {
   --activecnt;
 }
 void
-ev_now_update (EV_P) EV_THROW
+ev_now_update (EV_P) EV_NOEXCEPT
 {
   time_update (EV_A_ 1e100);
 }
 void
-ev_suspend (EV_P) EV_THROW
+ev_suspend (EV_P) EV_NOEXCEPT
 {
   ev_now_update (EV_A);
 }
 void
-ev_resume (EV_P) EV_THROW
+ev_resume (EV_P) EV_NOEXCEPT
 {
   ev_tstamp mn_prev = mn_now;
   ev_now_update (EV_A);
   timers_reschedule (EV_A_ mn_now - mn_prev);
       w->pending = 0;
     }
 }
 int
-ev_clear_pending (EV_P_ void *w) EV_THROW
+ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
 {
   W w_ = (W)w;
   int pending = w_->pending;
   if (expect_true (pending))
   w->active = 0;
 }
 /*****************************************************************************/
-void noinline
+noinline
+void
-ev_io_start (EV_P_ ev_io *w) EV_THROW
+ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
 {
   int fd = w->fd;
   if (expect_false (ev_is_active (w)))
     return;
   assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
   EV_FREQUENT_CHECK;
   ev_start (EV_A_ (W)w, 1);
-  array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
+  array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
   wlist_add (&anfds[fd].head, (WL)w);
   /* common bug, apparently */
   assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
   w->events &= ~EV__IOFDSET;
   EV_FREQUENT_CHECK;
 }
-void noinline
+noinline
+void
-ev_io_stop (EV_P_ ev_io *w) EV_THROW
+ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
 {
   clear_pending (EV_A_ (W)w);
   if (expect_false (!ev_is_active (w)))
     return;
   fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
   EV_FREQUENT_CHECK;
 }
-void noinline
+noinline
+void
-ev_timer_start (EV_P_ ev_timer *w) EV_THROW
+ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
 {
   if (expect_false (ev_is_active (w)))
     return;
   ev_at (w) += mn_now;
   EV_FREQUENT_CHECK;
   ++timercnt;
   ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
-  array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
+  array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
   ANHE_w (timers [ev_active (w)]) = (WT)w;
   ANHE_at_cache (timers [ev_active (w)]);
   upheap (timers, ev_active (w));
   EV_FREQUENT_CHECK;
   /*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
+ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
 {
   clear_pending (EV_A_ (W)w);
   if (expect_false (!ev_is_active (w)))
     return;
   ev_stop (EV_A_ (W)w);
   EV_FREQUENT_CHECK;
 }
-void noinline
+noinline
+void
-ev_timer_again (EV_P_ ev_timer *w) EV_THROW
+ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
 {
   EV_FREQUENT_CHECK;
   clear_pending (EV_A_ (W)w);
   EV_FREQUENT_CHECK;
 }
 ev_tstamp
-ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
+ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
 {
   return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
 }
 #if EV_PERIODIC_ENABLE
-void noinline
+noinline
+void
-ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
+ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
 {
   if (expect_false (ev_is_active (w)))
     return;
   if (w->reschedule_cb)
   EV_FREQUENT_CHECK;
   ++periodiccnt;
   ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
-  array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
+  array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
   ANHE_w (periodics [ev_active (w)]) = (WT)w;
   ANHE_at_cache (periodics [ev_active (w)]);
   upheap (periodics, ev_active (w));
   EV_FREQUENT_CHECK;
   /*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
+ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
 {
   clear_pending (EV_A_ (W)w);
   if (expect_false (!ev_is_active (w)))
     return;
   ev_stop (EV_A_ (W)w);
   EV_FREQUENT_CHECK;
 }
-void noinline
+noinline
+void
-ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
+ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
 {
   /* TODO: use adjustheap and recalculation */
   ev_periodic_stop (EV_A_ w);
   ev_periodic_start (EV_A_ w);
 }
 # define SA_RESTART 0
 #endif
 #if EV_SIGNAL_ENABLE
-void noinline
+noinline
+void
-ev_signal_start (EV_P_ ev_signal *w) EV_THROW
+ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
 {
   if (expect_false (ev_is_active (w)))
     return;
   assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
       }
   EV_FREQUENT_CHECK;
 }
-void noinline
+noinline
+void
-ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
+ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
 {
   clear_pending (EV_A_ (W)w);
   if (expect_false (!ev_is_active (w)))
     return;
 #endif
 #if EV_CHILD_ENABLE
 void
-ev_child_start (EV_P_ ev_child *w) EV_THROW
+ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
 {
 #if EV_MULTIPLICITY
   assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
 #endif
   if (expect_false (ev_is_active (w)))
   EV_FREQUENT_CHECK;
 }
 void
-ev_child_stop (EV_P_ ev_child *w) EV_THROW
+ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
 {
   clear_pending (EV_A_ (W)w);
   if (expect_false (!ev_is_active (w)))
     return;
 #define DEF_STAT_INTERVAL  5.0074891
 #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_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
   if (ev_is_active (&w->timer)) ev_ref (EV_A);
   ev_timer_again (EV_A_ &w->timer);
   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;
   int wd = w->wd;
   /* remove this watcher, if others are watching it, they will rearm */
   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)
     /* overflow, need to check for all hash slots */
     for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
       infy_wd (EV_A_ ev->wd, ev->wd, ev);
       ofs += sizeof (struct inotify_event) + ev->len;
     }
 }
-inline_size void ecb_cold
+inline_size ecb_cold
+void
 ev_check_2625 (EV_P)
 {
   /* kernels < 2.6.25 are borked
    * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
    */
 #else
 # define EV_LSTAT(p,b) lstat (p, b)
 #endif
 void
-ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
+ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
 {
   if (lstat (w->path, &w->attr) < 0)
     w->attr.st_nlink = 0;
   else if (!w->attr.st_nlink)
     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));
   ev_statdata prev = w->attr;
       ev_feed_event (EV_A_ w, EV_STAT);
     }
 }
 void
-ev_stat_start (EV_P_ ev_stat *w) EV_THROW
+ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
 {
   if (expect_false (ev_is_active (w)))
     return;
   ev_stat_stat (EV_A_ w);
   EV_FREQUENT_CHECK;
 }
 void
-ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
+ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
 {
   clear_pending (EV_A_ (W)w);
   if (expect_false (!ev_is_active (w)))
     return;
 }
 #endif
 #if EV_IDLE_ENABLE
 void
-ev_idle_start (EV_P_ ev_idle *w) EV_THROW
+ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
 {
   if (expect_false (ev_is_active (w)))
     return;
   pri_adjust (EV_A_ (W)w);
     int active = ++idlecnt [ABSPRI (w)];
     ++idleall;
     ev_start (EV_A_ (W)w, active);
-    array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
+    array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
     idles [ABSPRI (w)][active - 1] = w;
   }
   EV_FREQUENT_CHECK;
 }
 void
-ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
+ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
 {
   clear_pending (EV_A_ (W)w);
   if (expect_false (!ev_is_active (w)))
     return;
 }
 #endif
 #if EV_PREPARE_ENABLE
 void
-ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
+ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
 {
   if (expect_false (ev_is_active (w)))
     return;
   EV_FREQUENT_CHECK;
   ev_start (EV_A_ (W)w, ++preparecnt);
-  array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
+  array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
   prepares [preparecnt - 1] = w;
   EV_FREQUENT_CHECK;
 }
 void
-ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
+ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
 {
   clear_pending (EV_A_ (W)w);
   if (expect_false (!ev_is_active (w)))
     return;
 }
 #endif
 #if EV_CHECK_ENABLE
 void
-ev_check_start (EV_P_ ev_check *w) EV_THROW
+ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
 {
   if (expect_false (ev_is_active (w)))
     return;
   EV_FREQUENT_CHECK;
   ev_start (EV_A_ (W)w, ++checkcnt);
-  array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
+  array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
   checks [checkcnt - 1] = w;
   EV_FREQUENT_CHECK;
 }
 void
-ev_check_stop (EV_P_ ev_check *w) EV_THROW
+ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
 {
   clear_pending (EV_A_ (W)w);
   if (expect_false (!ev_is_active (w)))
     return;
   EV_FREQUENT_CHECK;
 }
 #endif
 #if EV_EMBED_ENABLE
-void noinline
+noinline
+void
-ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
+ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
 {
   ev_run (w->other, EVRUN_NOWAIT);
 }
 static void
   ev_idle_stop (EV_A_ idle);
 }
 #endif
 void
-ev_embed_start (EV_P_ ev_embed *w) EV_THROW
+ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
 {
   if (expect_false (ev_is_active (w)))
     return;
   {
   EV_FREQUENT_CHECK;
 }
 void
-ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
+ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
 {
   clear_pending (EV_A_ (W)w);
   if (expect_false (!ev_is_active (w)))
     return;
 }
 #endif
 #if EV_FORK_ENABLE
 void
-ev_fork_start (EV_P_ ev_fork *w) EV_THROW
+ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
 {
   if (expect_false (ev_is_active (w)))
     return;
   EV_FREQUENT_CHECK;
   ev_start (EV_A_ (W)w, ++forkcnt);
-  array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
+  array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
   forks [forkcnt - 1] = w;
   EV_FREQUENT_CHECK;
 }
 void
-ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
+ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
 {
   clear_pending (EV_A_ (W)w);
   if (expect_false (!ev_is_active (w)))
     return;
 }
 #endif
 #if EV_CLEANUP_ENABLE
 void
-ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
+ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
 {
   if (expect_false (ev_is_active (w)))
     return;
   EV_FREQUENT_CHECK;
   ev_start (EV_A_ (W)w, ++cleanupcnt);
-  array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
+  array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
   cleanups [cleanupcnt - 1] = w;
   /* cleanup watchers should never keep a refcount on the loop */
   ev_unref (EV_A);
   EV_FREQUENT_CHECK;
 }
 void
-ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
+ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
 {
   clear_pending (EV_A_ (W)w);
   if (expect_false (!ev_is_active (w)))
     return;
 }
 #endif
 #if EV_ASYNC_ENABLE
 void
-ev_async_start (EV_P_ ev_async *w) EV_THROW
+ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
 {
   if (expect_false (ev_is_active (w)))
     return;
   w->sent = 0;
   evpipe_init (EV_A);
   EV_FREQUENT_CHECK;
   ev_start (EV_A_ (W)w, ++asynccnt);
-  array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
+  array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
   asyncs [asynccnt - 1] = w;
   EV_FREQUENT_CHECK;
 }
 void
-ev_async_stop (EV_P_ ev_async *w) EV_THROW
+ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
 {
   clear_pending (EV_A_ (W)w);
   if (expect_false (!ev_is_active (w)))
     return;
   EV_FREQUENT_CHECK;
 }
 void
-ev_async_send (EV_P_ ev_async *w) EV_THROW
+ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
 {
   w->sent = 1;
   evpipe_write (EV_A_ &async_pending);
 }
 #endif
   once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
 }
 void
-ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
+ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
 {
   struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
-  if (expect_false (!once))
-    {
-      cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
-      return;
-    }
   once->cb  = cb;
   once->arg = arg;
   ev_init (&once->io, once_cb_io);
 }
 /*****************************************************************************/
 #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
+ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
 {
   int i, j;
   ev_watcher_list *wl, *wn;
   if (types & (EV_IO | EV_EMBED))

Diff Legend

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+Removed lines
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Comparing libev/ev.c (file contents): Revision 1.477 by root, Sun Aug 9 00:13:28 2015 UTC vs. Revision 1.493 by root, Sun Jun 23 02:02:24 2019 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.477 by root, Sun Aug 9 00:13:28 2015 UTC vs.
Revision 1.493 by root, Sun Jun 23 02:02:24 2019 UTC