--- /dev/null
+/*
+ * libev event processing core, watcher management
+ *
+ * Copyright (c) 2007,2008,2009,2010,2011 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:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
+ * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
+ * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * 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.
+ */
+
+/* this big block deduces configuration from config.h */
+#ifndef EV_STANDALONE
+# ifdef EV_CONFIG_H
+# include EV_CONFIG_H
+# else
+# include "config.h"
+# endif
+
+# if HAVE_CLOCK_SYSCALL
+# ifndef EV_USE_CLOCK_SYSCALL
+# define EV_USE_CLOCK_SYSCALL 1
+# ifndef EV_USE_REALTIME
+# define EV_USE_REALTIME 0
+# endif
+# ifndef EV_USE_MONOTONIC
+# define EV_USE_MONOTONIC 1
+# endif
+# endif
+# elif !defined(EV_USE_CLOCK_SYSCALL)
+# define EV_USE_CLOCK_SYSCALL 0
+# endif
+
+# if HAVE_CLOCK_GETTIME
+# ifndef EV_USE_MONOTONIC
+# define EV_USE_MONOTONIC 1
+# endif
+# ifndef EV_USE_REALTIME
+# define EV_USE_REALTIME 0
+# endif
+# else
+# ifndef EV_USE_MONOTONIC
+# define EV_USE_MONOTONIC 0
+# endif
+# ifndef EV_USE_REALTIME
+# define EV_USE_REALTIME 0
+# endif
+# endif
+
+# if HAVE_NANOSLEEP
+# ifndef EV_USE_NANOSLEEP
+# define EV_USE_NANOSLEEP EV_FEATURE_OS
+# endif
+# else
+# undef EV_USE_NANOSLEEP
+# define EV_USE_NANOSLEEP 0
+# endif
+
+# if HAVE_SELECT && HAVE_SYS_SELECT_H
+# ifndef EV_USE_SELECT
+# define EV_USE_SELECT EV_FEATURE_BACKENDS
+# endif
+# else
+# undef EV_USE_SELECT
+# define EV_USE_SELECT 0
+# endif
+
+# if HAVE_POLL && HAVE_POLL_H
+# ifndef EV_USE_POLL
+# define EV_USE_POLL EV_FEATURE_BACKENDS
+# endif
+# else
+# undef EV_USE_POLL
+# define EV_USE_POLL 0
+# endif
+
+# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
+# ifndef EV_USE_EPOLL
+# define EV_USE_EPOLL EV_FEATURE_BACKENDS
+# endif
+# else
+# undef EV_USE_EPOLL
+# define EV_USE_EPOLL 0
+# endif
+
+# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
+# ifndef EV_USE_KQUEUE
+# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
+# endif
+# else
+# undef EV_USE_KQUEUE
+# define EV_USE_KQUEUE 0
+# endif
+
+# if HAVE_PORT_H && HAVE_PORT_CREATE
+# ifndef EV_USE_PORT
+# define EV_USE_PORT EV_FEATURE_BACKENDS
+# endif
+# else
+# undef EV_USE_PORT
+# define EV_USE_PORT 0
+# endif
+
+# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
+# ifndef EV_USE_INOTIFY
+# define EV_USE_INOTIFY EV_FEATURE_OS
+# endif
+# else
+# undef EV_USE_INOTIFY
+# define EV_USE_INOTIFY 0
+# endif
+
+# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
+# ifndef EV_USE_SIGNALFD
+# define EV_USE_SIGNALFD EV_FEATURE_OS
+# endif
+# else
+# undef EV_USE_SIGNALFD
+# define EV_USE_SIGNALFD 0
+# endif
+
+# if HAVE_EVENTFD
+# ifndef EV_USE_EVENTFD
+# define EV_USE_EVENTFD EV_FEATURE_OS
+# endif
+# else
+# undef EV_USE_EVENTFD
+# define EV_USE_EVENTFD 0
+# endif
+
+#endif
+
+#include <math.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <stddef.h>
+
+#include <stdio.h>
+
+#include <assert.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <time.h>
+#include <limits.h>
+
+#include <signal.h>
+
+#ifdef EV_H
+# include EV_H
+#else
+# include "ev.h"
+#endif
+
+EV_CPP(extern "C" {)
+
+#ifndef _WIN32
+# include <sys/time.h>
+# include <sys/wait.h>
+# include <unistd.h>
+#else
+# include <io.h>
+# define WIN32_LEAN_AND_MEAN
+# include <windows.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)
+/* use what's provided */
+#elif defined (NSIG)
+# define EV_NSIG (NSIG)
+#elif defined(_NSIG)
+# define EV_NSIG (_NSIG)
+#elif defined (SIGMAX)
+# define EV_NSIG (SIGMAX+1)
+#elif defined (SIG_MAX)
+# define EV_NSIG (SIG_MAX+1)
+#elif defined (_SIG_MAX)
+# define EV_NSIG (_SIG_MAX+1)
+#elif defined (MAXSIG)
+# define EV_NSIG (MAXSIG+1)
+#elif defined (MAX_SIG)
+# define EV_NSIG (MAX_SIG+1)
+#elif defined (SIGARRAYSIZE)
+# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
+#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
+#endif
+
+#ifndef EV_USE_CLOCK_SYSCALL
+# if __linux && __GLIBC__ >= 2
+# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
+# else
+# define EV_USE_CLOCK_SYSCALL 0
+# endif
+#endif
+
+#ifndef EV_USE_MONOTONIC
+# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
+# define EV_USE_MONOTONIC EV_FEATURE_OS
+# else
+# define EV_USE_MONOTONIC 0
+# endif
+#endif
+
+#ifndef EV_USE_REALTIME
+# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
+#endif
+
+#ifndef EV_USE_NANOSLEEP
+# if _POSIX_C_SOURCE >= 199309L
+# define EV_USE_NANOSLEEP EV_FEATURE_OS
+# else
+# define EV_USE_NANOSLEEP 0
+# endif
+#endif
+
+#ifndef EV_USE_SELECT
+# define EV_USE_SELECT EV_FEATURE_BACKENDS
+#endif
+
+#ifndef EV_USE_POLL
+# ifdef _WIN32
+# define EV_USE_POLL 0
+# else
+# define EV_USE_POLL EV_FEATURE_BACKENDS
+# endif
+#endif
+
+#ifndef EV_USE_EPOLL
+# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
+# define EV_USE_EPOLL EV_FEATURE_BACKENDS
+# else
+# define EV_USE_EPOLL 0
+# endif
+#endif
+
+#ifndef EV_USE_KQUEUE
+# define EV_USE_KQUEUE 0
+#endif
+
+#ifndef EV_USE_PORT
+# define EV_USE_PORT 0
+#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
+# endif
+#endif
+
+#ifndef EV_PID_HASHSIZE
+# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
+#endif
+
+#ifndef EV_INOTIFY_HASHSIZE
+# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
+#endif
+
+#ifndef EV_USE_EVENTFD
+# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
+# define EV_USE_EVENTFD EV_FEATURE_OS
+# else
+# define EV_USE_EVENTFD 0
+# endif
+#endif
+
+#ifndef EV_USE_SIGNALFD
+# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
+# define EV_USE_SIGNALFD EV_FEATURE_OS
+# else
+# define EV_USE_SIGNALFD 0
+# endif
+#endif
+
+#if 0 /* debugging */
+# define EV_VERIFY 3
+# define EV_USE_4HEAP 1
+# define EV_HEAP_CACHE_AT 1
+#endif
+
+#ifndef EV_VERIFY
+# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
+#endif
+
+#ifndef EV_USE_4HEAP
+# define EV_USE_4HEAP EV_FEATURE_DATA
+#endif
+
+#ifndef EV_HEAP_CACHE_AT
+# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
+#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
+# include <syscall.h>
+# ifdef SYS_clock_gettime
+# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
+# undef EV_USE_MONOTONIC
+# define EV_USE_MONOTONIC 1
+# else
+# undef EV_USE_CLOCK_SYSCALL
+# define EV_USE_CLOCK_SYSCALL 0
+# endif
+#endif
+
+/* 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
+#endif
+
+#ifndef CLOCK_REALTIME
+# undef EV_USE_REALTIME
+# define EV_USE_REALTIME 0
+#endif
+
+#if !EV_STAT_ENABLE
+# undef EV_USE_INOTIFY
+# define EV_USE_INOTIFY 0
+#endif
+
+#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_INOTIFY
+# include <sys/statfs.h>
+# include <sys/inotify.h>
+/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
+# ifndef IN_DONT_FOLLOW
+# undef EV_USE_INOTIFY
+# define EV_USE_INOTIFY 0
+# endif
+#endif
+
+#if EV_SELECT_IS_WINSOCKET
+# include <winsock.h>
+#endif
+
+#if EV_USE_EVENTFD
+/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
+# include <stdint.h>
+# ifndef EFD_NONBLOCK
+# define EFD_NONBLOCK O_NONBLOCK
+# endif
+# ifndef EFD_CLOEXEC
+# ifdef O_CLOEXEC
+# define EFD_CLOEXEC O_CLOEXEC
+# else
+# define EFD_CLOEXEC 02000000
+# endif
+# endif
+EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
+#endif
+
+#if EV_USE_SIGNALFD
+/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
+# include <stdint.h>
+# ifndef SFD_NONBLOCK
+# define SFD_NONBLOCK O_NONBLOCK
+# endif
+# ifndef SFD_CLOEXEC
+# ifdef O_CLOEXEC
+# define SFD_CLOEXEC O_CLOEXEC
+# else
+# define SFD_CLOEXEC 02000000
+# endif
+# endif
+EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
+
+struct signalfd_siginfo
+{
+ uint32_t ssi_signo;
+ char pad[128 - sizeof (uint32_t)];
+};
+#endif
+
+/**/
+
+#if EV_VERIFY >= 3
+# define EV_FREQUENT_CHECK ev_verify (EV_A)
+#else
+# define EV_FREQUENT_CHECK do { } while (0)
+#endif
+
+/*
+ * This is used to avoid floating point rounding problems.
+ * It is added to ev_rt_now when scheduling periodics
+ * to ensure progress, time-wise, even when rounding
+ * errors are against us.
+ * This value is good at least till the year 4000.
+ * Better solutions welcome.
+ */
+#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
+
+#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
+#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
+
+#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
+#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
+
+#if __GNUC__ >= 4
+# define expect(expr,value) __builtin_expect ((expr),(value))
+# define noinline __attribute__ ((noinline))
+#else
+# define expect(expr,value) (expr)
+# define noinline
+# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
+# define inline
+# endif
+#endif
+
+#define expect_false(expr) expect ((expr) != 0, 0)
+#define expect_true(expr) expect ((expr) != 0, 1)
+#define inline_size static inline
+
+#if EV_FEATURE_CODE
+# define inline_speed static inline
+#else
+# define inline_speed static noinline
+#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 EMPTY2(a,b) /* used to suppress some warnings */
+
+typedef ev_watcher *W;
+typedef ev_watcher_list *WL;
+typedef ev_watcher_time *WT;
+
+#define ev_active(w) ((W)(w))->active
+#define ev_at(w) ((WT)(w))->at
+
+#if EV_USE_REALTIME
+/* sig_atomic_t is used to avoid per-thread variables or locking but still */
+/* giving it a reasonably high chance of working on typical architectures */
+static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
+#endif
+
+#if EV_USE_MONOTONIC
+static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
+#endif
+
+#ifndef EV_FD_TO_WIN32_HANDLE
+# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
+#endif
+#ifndef EV_WIN32_HANDLE_TO_FD
+# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
+#endif
+#ifndef EV_WIN32_CLOSE_FD
+# define EV_WIN32_CLOSE_FD(fd) close (fd)
+#endif
+
+#ifdef _WIN32
+# include "ev_win32.c"
+#endif
+
+/*****************************************************************************/
+
+#ifdef __linux
+# include <sys/utsname.h>
+#endif
+
+static unsigned int noinline
+ev_linux_version (void)
+{
+#ifdef __linux
+ unsigned int v = 0;
+ struct utsname buf;
+ int i;
+ char *p = buf.release;
+
+ if (uname (&buf))
+ return 0;
+
+ for (i = 3+1; --i; )
+ {
+ unsigned int c = 0;
+
+ for (;;)
+ {
+ if (*p >= '0' && *p <= '9')
+ c = c * 10 + *p++ - '0';
+ else
+ {
+ p += *p == '.';
+ break;
+ }
+ }
+
+ v = (v << 8) | c;
+ }
+
+ return v;
+#else
+ return 0;
+#endif
+}
+
+/*****************************************************************************/
+
+#if EV_AVOID_STDIO
+static void noinline
+ev_printerr (const char *msg)
+{
+ write (STDERR_FILENO, msg, strlen (msg));
+}
+#endif
+
+static void (*syserr_cb)(const char *msg);
+
+void
+ev_set_syserr_cb (void (*cb)(const char *msg))
+{
+ syserr_cb = cb;
+}
+
+static void noinline
+ev_syserr (const char *msg)
+{
+ if (!msg)
+ msg = "(libev) system error";
+
+ if (syserr_cb)
+ syserr_cb (msg);
+ else
+ {
+#if EV_AVOID_STDIO
+ ev_printerr (msg);
+ ev_printerr (": ");
+ ev_printerr (strerror (errno));
+ ev_printerr ("\n");
+#else
+ perror (msg);
+#endif
+ abort ();
+ }
+}
+
+static void *
+ev_realloc_emul (void *ptr, long size)
+{
+#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.
+ */
+
+ if (size)
+ return realloc (ptr, size);
+
+ free (ptr);
+ return 0;
+#endif
+}
+
+static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
+
+void
+ev_set_allocator (void *(*cb)(void *ptr, long size))
+{
+ alloc = cb;
+}
+
+inline_speed void *
+ev_realloc (void *ptr, long size)
+{
+ ptr = alloc (ptr, size);
+
+ if (!ptr && size)
+ {
+#if EV_AVOID_STDIO
+ ev_printerr ("(libev) memory allocation failed, aborting.\n");
+#else
+ fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
+#endif
+ abort ();
+ }
+
+ return ptr;
+}
+
+#define ev_malloc(size) ev_realloc (0, (size))
+#define ev_free(ptr) ev_realloc ((ptr), 0)
+
+/*****************************************************************************/
+
+/* set in reify when reification needed */
+#define EV_ANFD_REIFY 1
+
+/* file descriptor info structure */
+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 unused;
+#if EV_USE_EPOLL
+ unsigned int egen; /* generation counter to counter epoll bugs */
+#endif
+#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
+ SOCKET handle;
+#endif
+#if EV_USE_IOCP
+ OVERLAPPED or, ow;
+#endif
+} ANFD;
+
+/* stores the pending event set for a given watcher */
+typedef struct
+{
+ W w;
+ int events; /* the pending event set for the given watcher */
+} ANPENDING;
+
+#if EV_USE_INOTIFY
+/* hash table entry per inotify-id */
+typedef struct
+{
+ WL head;
+} ANFS;
+#endif
+
+/* Heap Entry */
+#if EV_HEAP_CACHE_AT
+ /* a heap element */
+ typedef struct {
+ ev_tstamp at;
+ WT w;
+ } ANHE;
+
+ #define ANHE_w(he) (he).w /* access watcher, read-write */
+ #define ANHE_at(he) (he).at /* access cached at, read-only */
+ #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
+#else
+ /* a heap element */
+ typedef WT ANHE;
+
+ #define ANHE_w(he) (he)
+ #define ANHE_at(he) (he)->at
+ #define ANHE_at_cache(he)
+#endif
+
+#if EV_MULTIPLICITY
+
+ struct ev_loop
+ {
+ ev_tstamp ev_rt_now;
+ #define ev_rt_now ((loop)->ev_rt_now)
+ #define VAR(name,decl) decl;
+ #include "ev_vars.h"
+ #undef VAR
+ };
+ #include "ev_wrap.h"
+
+ static struct ev_loop default_loop_struct;
+ struct ev_loop *ev_default_loop_ptr;
+
+#else
+
+ ev_tstamp ev_rt_now;
+ #define VAR(name,decl) static decl;
+ #include "ev_vars.h"
+ #undef VAR
+
+ static int ev_default_loop_ptr;
+
+#endif
+
+#if EV_FEATURE_API
+# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
+# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
+# define EV_INVOKE_PENDING invoke_cb (EV_A)
+#else
+# define EV_RELEASE_CB (void)0
+# define EV_ACQUIRE_CB (void)0
+# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
+#endif
+
+#define EVBREAK_RECURSE 0x80
+
+/*****************************************************************************/
+
+#ifndef EV_HAVE_EV_TIME
+ev_tstamp
+ev_time (void)
+{
+#if EV_USE_REALTIME
+ if (expect_true (have_realtime))
+ {
+ struct timespec ts;
+ clock_gettime (CLOCK_REALTIME, &ts);
+ return ts.tv_sec + ts.tv_nsec * 1e-9;
+ }
+#endif
+
+ struct timeval tv;
+ gettimeofday (&tv, 0);
+ return tv.tv_sec + tv.tv_usec * 1e-6;
+}
+#endif
+
+inline_size ev_tstamp
+get_clock (void)
+{
+#if EV_USE_MONOTONIC
+ if (expect_true (have_monotonic))
+ {
+ struct timespec ts;
+ clock_gettime (CLOCK_MONOTONIC, &ts);
+ return ts.tv_sec + ts.tv_nsec * 1e-9;
+ }
+#endif
+
+ return ev_time ();
+}
+
+#if EV_MULTIPLICITY
+ev_tstamp
+ev_now (EV_P)
+{
+ return ev_rt_now;
+}
+#endif
+
+void
+ev_sleep (ev_tstamp delay)
+{
+ if (delay > 0.)
+ {
+#if EV_USE_NANOSLEEP
+ struct timespec ts;
+
+ EV_TS_SET (ts, delay);
+ nanosleep (&ts, 0);
+#elif defined(_WIN32)
+ Sleep ((unsigned long)(delay * 1e3));
+#else
+ struct timeval tv;
+
+ /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
+ /* something not guaranteed by newer posix versions, but guaranteed */
+ /* by older ones */
+ EV_TV_SET (tv, delay);
+ select (0, 0, 0, 0, &tv);
+#endif
+ }
+}
+
+inline_speed int
+ev_timeout_to_ms (ev_tstamp timeout)
+{
+ int ms = timeout * 1000. + .999999;
+
+ return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
+}
+
+/*****************************************************************************/
+
+#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
+
+/* find a suitable new size for the given array, */
+/* hopefully by rounding to a nice-to-malloc size */
+inline_size int
+array_nextsize (int elem, int cur, int cnt)
+{
+ int ncur = cur + 1;
+
+ do
+ ncur <<= 1;
+ while (cnt > ncur);
+
+ /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
+ if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
+ {
+ ncur *= elem;
+ ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
+ ncur = ncur - sizeof (void *) * 4;
+ ncur /= elem;
+ }
+
+ return ncur;
+}
+
+static noinline 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_init_zero(base,count) \
+ memset ((void *)(base), 0, sizeof (*(base)) * (count))
+
+#define array_needsize(type,base,cur,cnt,init) \
+ if (expect_false ((cnt) > (cur))) \
+ { \
+ int ocur_ = (cur); \
+ (base) = (type *)array_realloc \
+ (sizeof (type), (base), &(cur), (cnt)); \
+ init ((base) + (ocur_), (cur) - ocur_); \
+ }
+
+#if 0
+#define array_slim(type,stem) \
+ if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
+ { \
+ stem ## max = array_roundsize (stem ## cnt >> 1); \
+ base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
+ fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
+ }
+#endif
+
+#define array_free(stem, idx) \
+ ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
+
+/*****************************************************************************/
+
+/* dummy callback for pending events */
+static void noinline
+pendingcb (EV_P_ ev_prepare *w, int revents)
+{
+}
+
+void noinline
+ev_feed_event (EV_P_ void *w, int revents)
+{
+ 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);
+ pendings [pri][w_->pending - 1].w = w_;
+ pendings [pri][w_->pending - 1].events = revents;
+ }
+}
+
+inline_speed void
+feed_reverse (EV_P_ W w)
+{
+ array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
+ rfeeds [rfeedcnt++] = w;
+}
+
+inline_size void
+feed_reverse_done (EV_P_ int revents)
+{
+ do
+ ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
+ while (rfeedcnt);
+}
+
+inline_speed void
+queue_events (EV_P_ W *events, int eventcnt, int type)
+{
+ int i;
+
+ for (i = 0; i < eventcnt; ++i)
+ ev_feed_event (EV_A_ events [i], type);
+}
+
+/*****************************************************************************/
+
+inline_speed void
+fd_event_nocheck (EV_P_ int fd, int revents)
+{
+ ANFD *anfd = anfds + fd;
+ ev_io *w;
+
+ for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
+ {
+ int ev = w->events & revents;
+
+ if (ev)
+ ev_feed_event (EV_A_ (W)w, ev);
+ }
+}
+
+/* do not submit kernel events for fds that have reify set */
+/* because that means they changed while we were polling for new events */
+inline_speed void
+fd_event (EV_P_ int fd, int revents)
+{
+ ANFD *anfd = anfds + fd;
+
+ if (expect_true (!anfd->reify))
+ fd_event_nocheck (EV_A_ fd, revents);
+}
+
+void
+ev_feed_fd_event (EV_P_ int fd, int revents)
+{
+ if (fd >= 0 && fd < anfdmax)
+ fd_event_nocheck (EV_A_ fd, revents);
+}
+
+/* make sure the external fd watch events are in-sync */
+/* with the kernel/libev internal state */
+inline_size void
+fd_reify (EV_P)
+{
+ int i;
+
+#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
+ for (i = 0; i < fdchangecnt; ++i)
+ {
+ int fd = fdchanges [i];
+ ANFD *anfd = anfds + fd;
+
+ if (anfd->reify & EV__IOFDSET)
+ {
+ SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
+
+ if (handle != anfd->handle)
+ {
+ unsigned long arg;
+
+ assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
+
+ /* handle changed, but fd didn't - we need to do it in two steps */
+ backend_modify (EV_A_ fd, anfd->events, 0);
+ anfd->events = 0;
+ anfd->handle = handle;
+ }
+ }
+ }
+#endif
+
+ for (i = 0; i < fdchangecnt; ++i)
+ {
+ int fd = fdchanges [i];
+ ANFD *anfd = anfds + fd;
+ ev_io *w;
+
+ unsigned char o_events = anfd->events;
+ unsigned char o_reify = anfd->reify;
+
+ anfd->reify = 0;
+
+ /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
+ {
+ anfd->events = 0;
+
+ for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
+ anfd->events |= (unsigned char)w->events;
+
+ if (o_events != anfd->events)
+ o_reify = EV__IOFDSET; /* actually |= */
+ }
+
+ if (o_reify & EV__IOFDSET)
+ backend_modify (EV_A_ fd, o_events, anfd->events);
+ }
+
+ fdchangecnt = 0;
+}
+
+/* something about the given fd changed */
+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);
+ fdchanges [fdchangecnt - 1] = fd;
+ }
+}
+
+/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
+inline_speed void
+fd_kill (EV_P_ int fd)
+{
+ ev_io *w;
+
+ while ((w = (ev_io *)anfds [fd].head))
+ {
+ ev_io_stop (EV_A_ w);
+ 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
+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
+fd_ebadf (EV_P)
+{
+ int fd;
+
+ for (fd = 0; fd < anfdmax; ++fd)
+ if (anfds [fd].events)
+ 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
+fd_enomem (EV_P)
+{
+ int fd;
+
+ for (fd = anfdmax; fd--; )
+ if (anfds [fd].events)
+ {
+ fd_kill (EV_A_ fd);
+ break;
+ }
+}
+
+/* usually called after fork if backend needs to re-arm all fds from scratch */
+static void noinline
+fd_rearm_all (EV_P)
+{
+ int fd;
+
+ for (fd = 0; fd < anfdmax; ++fd)
+ if (anfds [fd].events)
+ {
+ anfds [fd].events = 0;
+ anfds [fd].emask = 0;
+ fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
+ }
+}
+
+/* used to prepare libev internal fd's */
+/* this is not fork-safe */
+inline_speed void
+fd_intern (int fd)
+{
+#ifdef _WIN32
+ unsigned long arg = 1;
+ ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
+#else
+ fcntl (fd, F_SETFD, FD_CLOEXEC);
+ fcntl (fd, F_SETFL, O_NONBLOCK);
+#endif
+}
+
+/*****************************************************************************/
+
+/*
+ * the heap functions want a real array index. array index 0 is guaranteed to not
+ * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
+ * the branching factor of the d-tree.
+ */
+
+/*
+ * at the moment we allow libev the luxury of two heaps,
+ * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
+ * which is more cache-efficient.
+ * the difference is about 5% with 50000+ watchers.
+ */
+#if EV_USE_4HEAP
+
+#define DHEAP 4
+#define HEAP0 (DHEAP - 1) /* index of first element in heap */
+#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
+#define UPHEAP_DONE(p,k) ((p) == (k))
+
+/* away from the root */
+inline_speed void
+downheap (ANHE *heap, int N, int k)
+{
+ ANHE he = heap [k];
+ ANHE *E = heap + N + HEAP0;
+
+ for (;;)
+ {
+ ev_tstamp minat;
+ ANHE *minpos;
+ ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
+
+ /* find minimum child */
+ if (expect_true (pos + DHEAP - 1 < E))
+ {
+ /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
+ if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
+ if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
+ if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
+ }
+ else if (pos < E)
+ {
+ /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
+ if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
+ if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
+ if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
+ }
+ else
+ break;
+
+ if (ANHE_at (he) <= minat)
+ break;
+
+ heap [k] = *minpos;
+ ev_active (ANHE_w (*minpos)) = k;
+
+ k = minpos - heap;
+ }
+
+ heap [k] = he;
+ ev_active (ANHE_w (he)) = k;
+}
+
+#else /* 4HEAP */
+
+#define HEAP0 1
+#define HPARENT(k) ((k) >> 1)
+#define UPHEAP_DONE(p,k) (!(p))
+
+/* away from the root */
+inline_speed void
+downheap (ANHE *heap, int N, int k)
+{
+ ANHE he = heap [k];
+
+ for (;;)
+ {
+ int c = k << 1;
+
+ if (c >= N + HEAP0)
+ break;
+
+ c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
+ ? 1 : 0;
+
+ if (ANHE_at (he) <= ANHE_at (heap [c]))
+ break;
+
+ heap [k] = heap [c];
+ ev_active (ANHE_w (heap [k])) = k;
+
+ k = c;
+ }
+
+ heap [k] = he;
+ ev_active (ANHE_w (he)) = k;
+}
+#endif
+
+/* towards the root */
+inline_speed void
+upheap (ANHE *heap, int k)
+{
+ ANHE he = heap [k];
+
+ for (;;)
+ {
+ int p = HPARENT (k);
+
+ if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
+ break;
+
+ heap [k] = heap [p];
+ ev_active (ANHE_w (heap [k])) = k;
+ k = p;
+ }
+
+ heap [k] = he;
+ ev_active (ANHE_w (he)) = k;
+}
+
+/* move an element suitably so it is in a correct place */
+inline_size void
+adjustheap (ANHE *heap, int N, int k)
+{
+ if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
+ upheap (heap, k);
+ else
+ downheap (heap, N, k);
+}
+
+/* rebuild the heap: this function is used only once and executed rarely */
+inline_size void
+reheap (ANHE *heap, int N)
+{
+ int i;
+
+ /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
+ /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
+ for (i = 0; i < N; ++i)
+ upheap (heap, i + HEAP0);
+}
+
+/*****************************************************************************/
+
+/* associate signal watchers to a signal signal */
+typedef struct
+{
+ EV_ATOMIC_T pending;
+#if EV_MULTIPLICITY
+ EV_P;
+#endif
+ WL head;
+} ANSIG;
+
+static ANSIG signals [EV_NSIG - 1];
+
+/*****************************************************************************/
+
+#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
+
+static void noinline
+evpipe_init (EV_P)
+{
+ if (!ev_is_active (&pipe_w))
+ {
+# if EV_USE_EVENTFD
+ evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
+ if (evfd < 0 && errno == EINVAL)
+ evfd = eventfd (0, 0);
+
+ if (evfd >= 0)
+ {
+ evpipe [0] = -1;
+ fd_intern (evfd); /* doing it twice doesn't hurt */
+ ev_io_set (&pipe_w, evfd, EV_READ);
+ }
+ else
+# endif
+ {
+ while (pipe (evpipe))
+ ev_syserr ("(libev) error creating signal/async pipe");
+
+ fd_intern (evpipe [0]);
+ fd_intern (evpipe [1]);
+ ev_io_set (&pipe_w, evpipe [0], EV_READ);
+ }
+
+ ev_io_start (EV_A_ &pipe_w);
+ ev_unref (EV_A); /* watcher should not keep loop alive */
+ }
+}
+
+inline_size void
+evpipe_write (EV_P_ EV_ATOMIC_T *flag)
+{
+ if (!*flag)
+ {
+ int old_errno = errno; /* save errno because write might clobber it */
+ char dummy;
+
+ *flag = 1;
+
+#if EV_USE_EVENTFD
+ if (evfd >= 0)
+ {
+ uint64_t counter = 1;
+ write (evfd, &counter, sizeof (uint64_t));
+ }
+ else
+#endif
+ /* win32 people keep sending patches that change this write() to send() */
+ /* and then run away. but send() is wrong, it wants a socket handle on win32 */
+ /* so when you think this write should be a send instead, please find out */
+ /* where your send() is from - it's definitely not the microsoft send, and */
+ /* tell me. thank you. */
+ write (evpipe [1], &dummy, 1);
+
+ errno = old_errno;
+ }
+}
+
+/* called whenever the libev signal pipe */
+/* got some events (signal, async) */
+static void
+pipecb (EV_P_ ev_io *iow, int revents)
+{
+ int i;
+
+#if EV_USE_EVENTFD
+ if (evfd >= 0)
+ {
+ uint64_t counter;
+ read (evfd, &counter, sizeof (uint64_t));
+ }
+ else
+#endif
+ {
+ char dummy;
+ /* see discussion in evpipe_write when you think this read should be recv in win32 */
+ read (evpipe [0], &dummy, 1);
+ }
+
+#if EV_SIGNAL_ENABLE
+ if (sig_pending)
+ {
+ sig_pending = 0;
+
+ for (i = EV_NSIG - 1; i--; )
+ if (expect_false (signals [i].pending))
+ ev_feed_signal_event (EV_A_ i + 1);
+ }
+#endif
+
+#if EV_ASYNC_ENABLE
+ if (async_pending)
+ {
+ async_pending = 0;
+
+ for (i = asynccnt; i--; )
+ if (asyncs [i]->sent)
+ {
+ asyncs [i]->sent = 0;
+ ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
+ }
+ }
+#endif
+}
+
+/*****************************************************************************/
+
+void
+ev_feed_signal (int signum)
+{
+#if EV_MULTIPLICITY
+ EV_P = signals [signum - 1].loop;
+
+ if (!EV_A)
+ return;
+#endif
+
+ signals [signum - 1].pending = 1;
+ evpipe_write (EV_A_ &sig_pending);
+}
+
+static void
+ev_sighandler (int signum)
+{
+#ifdef _WIN32
+ signal (signum, ev_sighandler);
+#endif
+
+ ev_feed_signal (signum);
+}
+
+void noinline
+ev_feed_signal_event (EV_P_ int signum)
+{
+ WL w;
+
+ if (expect_false (signum <= 0 || signum > EV_NSIG))
+ return;
+
+ --signum;
+
+#if EV_MULTIPLICITY
+ /* it is permissible to try to feed a signal to the wrong loop */
+ /* or, likely more useful, feeding a signal nobody is waiting for */
+
+ if (expect_false (signals [signum].loop != EV_A))
+ return;
+#endif
+
+ signals [signum].pending = 0;
+
+ for (w = signals [signum].head; w; w = w->next)
+ ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
+}
+
+#if EV_USE_SIGNALFD
+static void
+sigfdcb (EV_P_ ev_io *iow, int revents)
+{
+ struct signalfd_siginfo si[2], *sip; /* these structs are big */
+
+ for (;;)
+ {
+ ssize_t res = read (sigfd, si, sizeof (si));
+
+ /* not ISO-C, as res might be -1, but works with SuS */
+ for (sip = si; (char *)sip < (char *)si + res; ++sip)
+ ev_feed_signal_event (EV_A_ sip->ssi_signo);
+
+ if (res < (ssize_t)sizeof (si))
+ break;
+ }
+}
+#endif
+
+#endif
+
+/*****************************************************************************/
+
+#if EV_CHILD_ENABLE
+static WL childs [EV_PID_HASHSIZE];
+
+static ev_signal childev;
+
+#ifndef WIFCONTINUED
+# define WIFCONTINUED(status) 0
+#endif
+
+/* handle a single child status event */
+inline_speed void
+child_reap (EV_P_ int chain, int pid, int status)
+{
+ ev_child *w;
+ int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
+
+ for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
+ {
+ if ((w->pid == pid || !w->pid)
+ && (!traced || (w->flags & 1)))
+ {
+ ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
+ w->rpid = pid;
+ w->rstatus = status;
+ ev_feed_event (EV_A_ (W)w, EV_CHILD);
+ }
+ }
+}
+
+#ifndef WCONTINUED
+# define WCONTINUED 0
+#endif
+
+/* called on sigchld etc., calls waitpid */
+static void
+childcb (EV_P_ ev_signal *sw, int revents)
+{
+ int pid, status;
+
+ /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
+ if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
+ if (!WCONTINUED
+ || errno != EINVAL
+ || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
+ return;
+
+ /* make sure we are called again until all children have been reaped */
+ /* we need to do it this way so that the callback gets called before we continue */
+ ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
+
+ child_reap (EV_A_ pid, pid, status);
+ if ((EV_PID_HASHSIZE) > 1)
+ child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
+}
+
+#endif
+
+/*****************************************************************************/
+
+#if EV_USE_IOCP
+# include "ev_iocp.c"
+#endif
+#if EV_USE_PORT
+# include "ev_port.c"
+#endif
+#if EV_USE_KQUEUE
+# include "ev_kqueue.c"
+#endif
+#if EV_USE_EPOLL
+# include "ev_epoll.c"
+#endif
+#if EV_USE_POLL
+# include "ev_poll.c"
+#endif
+#if EV_USE_SELECT
+# include "ev_select.c"
+#endif
+
+int
+ev_version_major (void)
+{
+ return EV_VERSION_MAJOR;
+}
+
+int
+ev_version_minor (void)
+{
+ return EV_VERSION_MINOR;
+}
+
+/* return true if we are running with elevated privileges and should ignore env variables */
+int inline_size
+enable_secure (void)
+{
+#ifdef _WIN32
+ return 0;
+#else
+ return getuid () != geteuid ()
+ || getgid () != getegid ();
+#endif
+}
+
+unsigned int
+ev_supported_backends (void)
+{
+ unsigned int flags = 0;
+
+ if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
+ if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
+ if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
+ if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
+ if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
+
+ return flags;
+}
+
+unsigned int
+ev_recommended_backends (void)
+{
+ unsigned int flags = ev_supported_backends ();
+
+#ifndef __NetBSD__
+ /* kqueue is borked on everything but netbsd apparently */
+ /* it usually doesn't work correctly on anything but sockets and pipes */
+ flags &= ~EVBACKEND_KQUEUE;
+#endif
+#ifdef __APPLE__
+ /* only select works correctly on that "unix-certified" platform */
+ flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
+ flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
+#endif
+#ifdef __FreeBSD__
+ flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
+#endif
+
+ return flags;
+}
+
+unsigned int
+ev_embeddable_backends (void)
+{
+ 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 */
+ flags &= ~EVBACKEND_EPOLL;
+
+ return flags;
+}
+
+unsigned int
+ev_backend (EV_P)
+{
+ return backend;
+}
+
+#if EV_FEATURE_API
+unsigned int
+ev_iteration (EV_P)
+{
+ return loop_count;
+}
+
+unsigned int
+ev_depth (EV_P)
+{
+ return loop_depth;
+}
+
+void
+ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
+{
+ io_blocktime = interval;
+}
+
+void
+ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
+{
+ timeout_blocktime = interval;
+}
+
+void
+ev_set_userdata (EV_P_ void *data)
+{
+ userdata = data;
+}
+
+void *
+ev_userdata (EV_P)
+{
+ return userdata;
+}
+
+void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
+{
+ invoke_cb = invoke_pending_cb;
+}
+
+void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
+{
+ release_cb = release;
+ acquire_cb = acquire;
+}
+#endif
+
+/* initialise a loop structure, must be zero-initialised */
+static void noinline
+loop_init (EV_P_ unsigned int flags)
+{
+ if (!backend)
+ {
+ origflags = flags;
+
+#if EV_USE_REALTIME
+ if (!have_realtime)
+ {
+ struct timespec ts;
+
+ if (!clock_gettime (CLOCK_REALTIME, &ts))
+ have_realtime = 1;
+ }
+#endif
+
+#if EV_USE_MONOTONIC
+ if (!have_monotonic)
+ {
+ struct timespec ts;
+
+ if (!clock_gettime (CLOCK_MONOTONIC, &ts))
+ have_monotonic = 1;
+ }
+#endif
+
+ /* pid check not overridable via env */
+#ifndef _WIN32
+ if (flags & EVFLAG_FORKCHECK)
+ curpid = getpid ();
+#endif
+
+ if (!(flags & EVFLAG_NOENV)
+ && !enable_secure ()
+ && getenv ("LIBEV_FLAGS"))
+ flags = atoi (getenv ("LIBEV_FLAGS"));
+
+ ev_rt_now = ev_time ();
+ mn_now = get_clock ();
+ now_floor = mn_now;
+ rtmn_diff = ev_rt_now - mn_now;
+#if EV_FEATURE_API
+ invoke_cb = ev_invoke_pending;
+#endif
+
+ io_blocktime = 0.;
+ timeout_blocktime = 0.;
+ backend = 0;
+ backend_fd = -1;
+ sig_pending = 0;
+#if EV_ASYNC_ENABLE
+ async_pending = 0;
+#endif
+#if EV_USE_INOTIFY
+ fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
+#endif
+#if EV_USE_SIGNALFD
+ sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
+#endif
+
+ if (!(flags & EVBACKEND_MASK))
+ flags |= ev_recommended_backends ();
+
+#if EV_USE_IOCP
+ 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);
+#endif
+#if EV_USE_KQUEUE
+ if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
+#endif
+#if EV_USE_EPOLL
+ 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);
+#endif
+#if EV_USE_SELECT
+ 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
+ ev_init (&pipe_w, pipecb);
+ ev_set_priority (&pipe_w, EV_MAXPRI);
+#endif
+ }
+}
+
+/* free up a loop structure */
+void
+ev_loop_destroy (EV_P)
+{
+ int i;
+
+#if EV_MULTIPLICITY
+ /* mimic free (0) */
+ if (!EV_A)
+ return;
+#endif
+
+#if EV_CLEANUP_ENABLE
+ /* queue cleanup watchers (and execute them) */
+ if (expect_false (cleanupcnt))
+ {
+ queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
+ EV_INVOKE_PENDING;
+ }
+#endif
+
+#if EV_CHILD_ENABLE
+ if (ev_is_active (&childev))
+ {
+ ev_ref (EV_A); /* child watcher */
+ ev_signal_stop (EV_A_ &childev);
+ }
+#endif
+
+ if (ev_is_active (&pipe_w))
+ {
+ /*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 EV_USE_SIGNALFD
+ if (ev_is_active (&sigfd_w))
+ close (sigfd);
+#endif
+
+#if EV_USE_INOTIFY
+ if (fs_fd >= 0)
+ close (fs_fd);
+#endif
+
+ if (backend_fd >= 0)
+ close (backend_fd);
+
+#if EV_USE_IOCP
+ if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
+#endif
+#if EV_USE_PORT
+ if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
+#endif
+#if EV_USE_KQUEUE
+ if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
+#endif
+#if EV_USE_EPOLL
+ if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
+#endif
+#if EV_USE_POLL
+ if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
+#endif
+#if EV_USE_SELECT
+ if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
+#endif
+
+ for (i = NUMPRI; i--; )
+ {
+ array_free (pending, [i]);
+#if EV_IDLE_ENABLE
+ array_free (idle, [i]);
+#endif
+ }
+
+ ev_free (anfds); anfds = 0; anfdmax = 0;
+
+ /* have to use the microsoft-never-gets-it-right macro */
+ array_free (rfeed, EMPTY);
+ array_free (fdchange, EMPTY);
+ array_free (timer, EMPTY);
+#if EV_PERIODIC_ENABLE
+ array_free (periodic, EMPTY);
+#endif
+#if EV_FORK_ENABLE
+ array_free (fork, EMPTY);
+#endif
+#if EV_CLEANUP_ENABLE
+ array_free (cleanup, EMPTY);
+#endif
+ array_free (prepare, EMPTY);
+ array_free (check, EMPTY);
+#if EV_ASYNC_ENABLE
+ array_free (async, EMPTY);
+#endif
+
+ backend = 0;
+
+#if EV_MULTIPLICITY
+ if (ev_is_default_loop (EV_A))
+#endif
+ ev_default_loop_ptr = 0;
+#if EV_MULTIPLICITY
+ else
+ ev_free (EV_A);
+#endif
+}
+
+#if EV_USE_INOTIFY
+inline_size void infy_fork (EV_P);
+#endif
+
+inline_size void
+loop_fork (EV_P)
+{
+#if EV_USE_PORT
+ if (backend == EVBACKEND_PORT ) port_fork (EV_A);
+#endif
+#if EV_USE_KQUEUE
+ if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
+#endif
+#if EV_USE_EPOLL
+ if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
+#endif
+#if EV_USE_INOTIFY
+ infy_fork (EV_A);
+#endif
+
+ if (ev_is_active (&pipe_w))
+ {
+ /* this "locks" the handlers against writing to the pipe */
+ /* while we modify the fd vars */
+ sig_pending = 1;
+#if EV_ASYNC_ENABLE
+ async_pending = 1;
+#endif
+
+ 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 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
+ }
+
+ postfork = 0;
+}
+
+#if EV_MULTIPLICITY
+
+struct ev_loop *
+ev_loop_new (unsigned int flags)
+{
+ EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
+
+ memset (EV_A, 0, sizeof (struct ev_loop));
+ loop_init (EV_A_ flags);
+
+ if (ev_backend (EV_A))
+ return EV_A;
+
+ ev_free (EV_A);
+ return 0;
+}
+
+#endif /* multiplicity */
+
+#if EV_VERIFY
+static void noinline
+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
+verify_heap (EV_P_ ANHE *heap, int N)
+{
+ int i;
+
+ for (i = HEAP0; i < N + HEAP0; ++i)
+ {
+ assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
+ assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
+ assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
+
+ verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
+ }
+}
+
+static void noinline
+array_verify (EV_P_ W *ws, int cnt)
+{
+ while (cnt--)
+ {
+ assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
+ verify_watcher (EV_A_ ws [cnt]);
+ }
+}
+#endif
+
+#if EV_FEATURE_API
+void
+ev_verify (EV_P)
+{
+#if EV_VERIFY
+ int i;
+ WL w;
+
+ assert (activecnt >= -1);
+
+ assert (fdchangemax >= fdchangecnt);
+ for (i = 0; i < fdchangecnt; ++i)
+ assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
+
+ assert (anfdmax >= 0);
+ for (i = 0; i < anfdmax; ++i)
+ for (w = anfds [i].head; w; w = w->next)
+ {
+ verify_watcher (EV_A_ (W)w);
+ assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
+ assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
+ }
+
+ assert (timermax >= timercnt);
+ verify_heap (EV_A_ timers, timercnt);
+
+#if EV_PERIODIC_ENABLE
+ assert (periodicmax >= periodiccnt);
+ verify_heap (EV_A_ periodics, periodiccnt);
+#endif
+
+ for (i = NUMPRI; i--; )
+ {
+ assert (pendingmax [i] >= pendingcnt [i]);
+#if EV_IDLE_ENABLE
+ assert (idleall >= 0);
+ assert (idlemax [i] >= idlecnt [i]);
+ array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
+#endif
+ }
+
+#if EV_FORK_ENABLE
+ assert (forkmax >= forkcnt);
+ array_verify (EV_A_ (W *)forks, forkcnt);
+#endif
+
+#if EV_CLEANUP_ENABLE
+ assert (cleanupmax >= cleanupcnt);
+ array_verify (EV_A_ (W *)cleanups, cleanupcnt);
+#endif
+
+#if EV_ASYNC_ENABLE
+ assert (asyncmax >= asynccnt);
+ array_verify (EV_A_ (W *)asyncs, asynccnt);
+#endif
+
+#if EV_PREPARE_ENABLE
+ assert (preparemax >= preparecnt);
+ array_verify (EV_A_ (W *)prepares, preparecnt);
+#endif
+
+#if EV_CHECK_ENABLE
+ assert (checkmax >= checkcnt);
+ array_verify (EV_A_ (W *)checks, checkcnt);
+#endif
+
+# if 0
+#if EV_CHILD_ENABLE
+ for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
+ for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
+#endif
+# endif
+#endif
+}
+#endif
+
+#if EV_MULTIPLICITY
+struct ev_loop *
+#else
+int
+#endif
+ev_default_loop (unsigned int flags)
+{
+ if (!ev_default_loop_ptr)
+ {
+#if EV_MULTIPLICITY
+ EV_P = ev_default_loop_ptr = &default_loop_struct;
+#else
+ ev_default_loop_ptr = 1;
+#endif
+
+ loop_init (EV_A_ flags);
+
+ if (ev_backend (EV_A))
+ {
+#if EV_CHILD_ENABLE
+ ev_signal_init (&childev, childcb, SIGCHLD);
+ ev_set_priority (&childev, EV_MAXPRI);
+ ev_signal_start (EV_A_ &childev);
+ ev_unref (EV_A); /* child watcher should not keep loop alive */
+#endif
+ }
+ else
+ ev_default_loop_ptr = 0;
+ }
+
+ return ev_default_loop_ptr;
+}
+
+void
+ev_loop_fork (EV_P)
+{
+ postfork = 1; /* must be in line with ev_default_fork */
+}
+
+/*****************************************************************************/
+
+void
+ev_invoke (EV_P_ void *w, int revents)
+{
+ EV_CB_INVOKE ((W)w, revents);
+}
+
+unsigned int
+ev_pending_count (EV_P)
+{
+ int pri;
+ unsigned int count = 0;
+
+ for (pri = NUMPRI; pri--; )
+ count += pendingcnt [pri];
+
+ return count;
+}
+
+void noinline
+ev_invoke_pending (EV_P)
+{
+ int pri;
+
+ for (pri = NUMPRI; pri--; )
+ while (pendingcnt [pri])
+ {
+ ANPENDING *p = pendings [pri] + --pendingcnt [pri];
+
+ p->w->pending = 0;
+ EV_CB_INVOKE (p->w, p->events);
+ EV_FREQUENT_CHECK;
+ }
+}
+
+#if EV_IDLE_ENABLE
+/* make idle watchers pending. this handles the "call-idle */
+/* only when higher priorities are idle" logic */
+inline_size void
+idle_reify (EV_P)
+{
+ if (expect_false (idleall))
+ {
+ int pri;
+
+ for (pri = NUMPRI; pri--; )
+ {
+ if (pendingcnt [pri])
+ break;
+
+ if (idlecnt [pri])
+ {
+ queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
+ break;
+ }
+ }
+ }
+}
+#endif
+
+/* make timers pending */
+inline_size void
+timers_reify (EV_P)
+{
+ EV_FREQUENT_CHECK;
+
+ if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
+ {
+ do
+ {
+ ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
+
+ /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
+
+ /* first reschedule or stop timer */
+ if (w->repeat)
+ {
+ ev_at (w) += w->repeat;
+ if (ev_at (w) < mn_now)
+ ev_at (w) = mn_now;
+
+ assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
+
+ ANHE_at_cache (timers [HEAP0]);
+ downheap (timers, timercnt, HEAP0);
+ }
+ else
+ ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
+
+ EV_FREQUENT_CHECK;
+ feed_reverse (EV_A_ (W)w);
+ }
+ while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
+
+ feed_reverse_done (EV_A_ EV_TIMER);
+ }
+}
+
+#if EV_PERIODIC_ENABLE
+
+inline_speed void
+periodic_recalc (EV_P_ ev_periodic *w)
+{
+ /* TODO: use slow but potentially more correct incremental algo, */
+ /* also do not rely on ceil */
+ ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
+}
+
+/* make periodics pending */
+inline_size void
+periodics_reify (EV_P)
+{
+ EV_FREQUENT_CHECK;
+
+ while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
+ {
+ int feed_count = 0;
+
+ do
+ {
+ ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
+
+ /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
+
+ /* first reschedule or stop timer */
+ if (w->reschedule_cb)
+ {
+ ev_at (w) = w->reschedule_cb (w, ev_rt_now);
+
+ assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
+
+ ANHE_at_cache (periodics [HEAP0]);
+ downheap (periodics, periodiccnt, HEAP0);
+ }
+ else if (w->interval)
+ {
+ periodic_recalc (EV_A_ w);
+
+ /* if next trigger time is not sufficiently in the future, put it there */
+ /* this might happen because of floating point inexactness */
+ if (ev_at (w) - ev_rt_now < TIME_EPSILON)
+ {
+ ev_at (w) += w->interval;
+
+ /* if interval is unreasonably low we might still have a time in the past */
+ /* so correct this. this will make the periodic very inexact, but the user */
+ /* has effectively asked to get triggered more often than possible */
+ if (ev_at (w) < ev_rt_now)
+ ev_at (w) = ev_rt_now;
+ }
+
+ ANHE_at_cache (periodics [HEAP0]);
+ downheap (periodics, periodiccnt, HEAP0);
+ }
+ else
+ ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
+
+ EV_FREQUENT_CHECK;
+ feed_reverse (EV_A_ (W)w);
+ }
+ while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
+
+ feed_reverse_done (EV_A_ EV_PERIODIC);
+ }
+}
+
+/* simply recalculate all periodics */
+/* TODO: maybe ensure that at least one event happens when jumping forward? */
+static void noinline
+periodics_reschedule (EV_P)
+{
+ int i;
+
+ /* adjust periodics after time jump */
+ for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
+ {
+ ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
+
+ if (w->reschedule_cb)
+ ev_at (w) = w->reschedule_cb (w, ev_rt_now);
+ else if (w->interval)
+ periodic_recalc (EV_A_ w);
+
+ ANHE_at_cache (periodics [i]);
+ }
+
+ reheap (periodics, periodiccnt);
+}
+#endif
+
+/* adjust all timers by a given offset */
+static void noinline
+timers_reschedule (EV_P_ ev_tstamp adjust)
+{
+ int i;
+
+ for (i = 0; i < timercnt; ++i)
+ {
+ ANHE *he = timers + i + HEAP0;
+ ANHE_w (*he)->at += adjust;
+ ANHE_at_cache (*he);
+ }
+}
+
+/* fetch new monotonic and realtime times from the kernel */
+/* also detect if there was a timejump, and act accordingly */
+inline_speed void
+time_update (EV_P_ ev_tstamp max_block)
+{
+#if EV_USE_MONOTONIC
+ if (expect_true (have_monotonic))
+ {
+ int i;
+ ev_tstamp odiff = rtmn_diff;
+
+ mn_now = get_clock ();
+
+ /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
+ /* interpolate in the meantime */
+ if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
+ {
+ ev_rt_now = rtmn_diff + mn_now;
+ return;
+ }
+
+ now_floor = mn_now;
+ ev_rt_now = ev_time ();
+
+ /* loop a few times, before making important decisions.
+ * on the choice of "4": one iteration isn't enough,
+ * in case we get preempted during the calls to
+ * ev_time and get_clock. a second call is almost guaranteed
+ * to succeed in that case, though. and looping a few more times
+ * doesn't hurt either as we only do this on time-jumps or
+ * in the unlikely event of having been preempted here.
+ */
+ for (i = 4; --i; )
+ {
+ rtmn_diff = ev_rt_now - mn_now;
+
+ if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
+ return; /* all is well */
+
+ ev_rt_now = ev_time ();
+ mn_now = get_clock ();
+ now_floor = mn_now;
+ }
+
+ /* no timer adjustment, as the monotonic clock doesn't jump */
+ /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
+# if EV_PERIODIC_ENABLE
+ periodics_reschedule (EV_A);
+# endif
+ }
+ else
+#endif
+ {
+ ev_rt_now = ev_time ();
+
+ if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
+ {
+ /* adjust timers. this is easy, as the offset is the same for all of them */
+ timers_reschedule (EV_A_ ev_rt_now - mn_now);
+#if EV_PERIODIC_ENABLE
+ periodics_reschedule (EV_A);
+#endif
+ }
+
+ mn_now = ev_rt_now;
+ }
+}
+
+void
+ev_run (EV_P_ int flags)
+{
+#if EV_FEATURE_API
+ ++loop_depth;
+#endif
+
+ assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
+
+ loop_done = EVBREAK_CANCEL;
+
+ EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
+
+ do
+ {
+#if EV_VERIFY >= 2
+ ev_verify (EV_A);
+#endif
+
+#ifndef _WIN32
+ if (expect_false (curpid)) /* penalise the forking check even more */
+ if (expect_false (getpid () != curpid))
+ {
+ curpid = getpid ();
+ postfork = 1;
+ }
+#endif
+
+#if EV_FORK_ENABLE
+ /* we might have forked, so queue fork handlers */
+ if (expect_false (postfork))
+ if (forkcnt)
+ {
+ queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
+ EV_INVOKE_PENDING;
+ }
+#endif
+
+#if EV_PREPARE_ENABLE
+ /* queue prepare watchers (and execute them) */
+ if (expect_false (preparecnt))
+ {
+ queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
+ EV_INVOKE_PENDING;
+ }
+#endif
+
+ if (expect_false (loop_done))
+ break;
+
+ /* we might have forked, so reify kernel state if necessary */
+ if (expect_false (postfork))
+ loop_fork (EV_A);
+
+ /* update fd-related kernel structures */
+ fd_reify (EV_A);
+
+ /* calculate blocking time */
+ {
+ ev_tstamp waittime = 0.;
+ ev_tstamp sleeptime = 0.;
+
+ /* remember old timestamp for io_blocktime calculation */
+ ev_tstamp prev_mn_now = mn_now;
+
+ /* update time to cancel out callback processing overhead */
+ time_update (EV_A_ 1e100);
+
+ if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
+ {
+ waittime = MAX_BLOCKTIME;
+
+ if (timercnt)
+ {
+ ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
+ if (waittime > to) waittime = to;
+ }
+
+#if EV_PERIODIC_ENABLE
+ if (periodiccnt)
+ {
+ ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
+ if (waittime > to) waittime = to;
+ }
+#endif
+
+ /* don't let timeouts decrease the waittime below timeout_blocktime */
+ if (expect_false (waittime < timeout_blocktime))
+ waittime = timeout_blocktime;
+
+ /* extra check because io_blocktime is commonly 0 */
+ if (expect_false (io_blocktime))
+ {
+ sleeptime = io_blocktime - (mn_now - prev_mn_now);
+
+ if (sleeptime > waittime - backend_fudge)
+ sleeptime = waittime - backend_fudge;
+
+ if (expect_true (sleeptime > 0.))
+ {
+ ev_sleep (sleeptime);
+ waittime -= sleeptime;
+ }
+ }
+ }
+
+#if EV_FEATURE_API
+ ++loop_count;
+#endif
+ assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
+ backend_poll (EV_A_ waittime);
+ assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
+
+ /* update ev_rt_now, do magic */
+ time_update (EV_A_ waittime + sleeptime);
+ }
+
+ /* queue pending timers and reschedule them */
+ timers_reify (EV_A); /* relative timers called last */
+#if EV_PERIODIC_ENABLE
+ periodics_reify (EV_A); /* absolute timers called first */
+#endif
+
+#if EV_IDLE_ENABLE
+ /* queue idle watchers unless other events are pending */
+ idle_reify (EV_A);
+#endif
+
+#if EV_CHECK_ENABLE
+ /* queue check watchers, to be executed first */
+ if (expect_false (checkcnt))
+ queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
+#endif
+
+ EV_INVOKE_PENDING;
+ }
+ while (expect_true (
+ activecnt
+ && !loop_done
+ && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
+ ));
+
+ if (loop_done == EVBREAK_ONE)
+ loop_done = EVBREAK_CANCEL;
+
+#if EV_FEATURE_API
+ --loop_depth;
+#endif
+}
+
+void
+ev_break (EV_P_ int how)
+{
+ loop_done = how;
+}
+
+void
+ev_ref (EV_P)
+{
+ ++activecnt;
+}
+
+void
+ev_unref (EV_P)
+{
+ --activecnt;
+}
+
+void
+ev_now_update (EV_P)
+{
+ time_update (EV_A_ 1e100);
+}
+
+void
+ev_suspend (EV_P)
+{
+ ev_now_update (EV_A);
+}
+
+void
+ev_resume (EV_P)
+{
+ ev_tstamp mn_prev = mn_now;
+
+ ev_now_update (EV_A);
+ timers_reschedule (EV_A_ mn_now - mn_prev);
+#if EV_PERIODIC_ENABLE
+ /* TODO: really do this? */
+ periodics_reschedule (EV_A);
+#endif
+}
+
+/*****************************************************************************/
+/* singly-linked list management, used when the expected list length is short */
+
+inline_size void
+wlist_add (WL *head, WL elem)
+{
+ elem->next = *head;
+ *head = elem;
+}
+
+inline_size void
+wlist_del (WL *head, WL elem)
+{
+ while (*head)
+ {
+ if (expect_true (*head == elem))
+ {
+ *head = elem->next;
+ break;
+ }
+
+ head = &(*head)->next;
+ }
+}
+
+/* internal, faster, version of ev_clear_pending */
+inline_speed void
+clear_pending (EV_P_ W w)
+{
+ if (w->pending)
+ {
+ pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
+ w->pending = 0;
+ }
+}
+
+int
+ev_clear_pending (EV_P_ void *w)
+{
+ W w_ = (W)w;
+ int pending = w_->pending;
+
+ if (expect_true (pending))
+ {
+ ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
+ p->w = (W)&pending_w;
+ w_->pending = 0;
+ return p->events;
+ }
+ else
+ return 0;
+}
+
+inline_size void
+pri_adjust (EV_P_ W w)
+{
+ int pri = ev_priority (w);
+ pri = pri < EV_MINPRI ? EV_MINPRI : pri;
+ pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
+ ev_set_priority (w, pri);
+}
+
+inline_speed void
+ev_start (EV_P_ W w, int active)
+{
+ pri_adjust (EV_A_ w);
+ w->active = active;
+ ev_ref (EV_A);
+}
+
+inline_size void
+ev_stop (EV_P_ W w)
+{
+ ev_unref (EV_A);
+ w->active = 0;
+}
+
+/*****************************************************************************/
+
+void noinline
+ev_io_start (EV_P_ ev_io *w)
+{
+ int fd = w->fd;
+
+ if (expect_false (ev_is_active (w)))
+ return;
+
+ assert (("libev: ev_io_start called with negative fd", fd >= 0));
+ 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);
+ wlist_add (&anfds[fd].head, (WL)w);
+
+ fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
+ w->events &= ~EV__IOFDSET;
+
+ EV_FREQUENT_CHECK;
+}
+
+void noinline
+ev_io_stop (EV_P_ ev_io *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
+
+ EV_FREQUENT_CHECK;
+
+ wlist_del (&anfds[w->fd].head, (WL)w);
+ ev_stop (EV_A_ (W)w);
+
+ fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
+
+ EV_FREQUENT_CHECK;
+}
+
+void noinline
+ev_timer_start (EV_P_ ev_timer *w)
+{
+ if (expect_false (ev_is_active (w)))
+ return;
+
+ ev_at (w) += mn_now;
+
+ assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
+
+ EV_FREQUENT_CHECK;
+
+ ++timercnt;
+ ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
+ array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
+ 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
+ev_timer_stop (EV_P_ ev_timer *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ {
+ int active = ev_active (w);
+
+ assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
+
+ --timercnt;
+
+ if (expect_true (active < timercnt + HEAP0))
+ {
+ timers [active] = timers [timercnt + HEAP0];
+ adjustheap (timers, timercnt, active);
+ }
+ }
+
+ ev_at (w) -= mn_now;
+
+ ev_stop (EV_A_ (W)w);
+
+ EV_FREQUENT_CHECK;
+}
+
+void noinline
+ev_timer_again (EV_P_ ev_timer *w)
+{
+ EV_FREQUENT_CHECK;
+
+ if (ev_is_active (w))
+ {
+ if (w->repeat)
+ {
+ ev_at (w) = mn_now + w->repeat;
+ ANHE_at_cache (timers [ev_active (w)]);
+ adjustheap (timers, timercnt, ev_active (w));
+ }
+ else
+ ev_timer_stop (EV_A_ w);
+ }
+ else if (w->repeat)
+ {
+ ev_at (w) = w->repeat;
+ ev_timer_start (EV_A_ w);
+ }
+
+ EV_FREQUENT_CHECK;
+}
+
+ev_tstamp
+ev_timer_remaining (EV_P_ ev_timer *w)
+{
+ return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
+}
+
+#if EV_PERIODIC_ENABLE
+void noinline
+ev_periodic_start (EV_P_ ev_periodic *w)
+{
+ if (expect_false (ev_is_active (w)))
+ return;
+
+ if (w->reschedule_cb)
+ ev_at (w) = w->reschedule_cb (w, ev_rt_now);
+ else if (w->interval)
+ {
+ assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
+ periodic_recalc (EV_A_ w);
+ }
+ else
+ ev_at (w) = w->offset;
+
+ EV_FREQUENT_CHECK;
+
+ ++periodiccnt;
+ ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
+ array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
+ 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
+ev_periodic_stop (EV_P_ ev_periodic *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ {
+ int active = ev_active (w);
+
+ assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
+
+ --periodiccnt;
+
+ if (expect_true (active < periodiccnt + HEAP0))
+ {
+ periodics [active] = periodics [periodiccnt + HEAP0];
+ adjustheap (periodics, periodiccnt, active);
+ }
+ }
+
+ ev_stop (EV_A_ (W)w);
+
+ EV_FREQUENT_CHECK;
+}
+
+void noinline
+ev_periodic_again (EV_P_ ev_periodic *w)
+{
+ /* TODO: use adjustheap and recalculation */
+ ev_periodic_stop (EV_A_ w);
+ ev_periodic_start (EV_A_ w);
+}
+#endif
+
+#ifndef SA_RESTART
+# define SA_RESTART 0
+#endif
+
+#if EV_SIGNAL_ENABLE
+
+void noinline
+ev_signal_start (EV_P_ ev_signal *w)
+{
+ 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));
+
+#if EV_MULTIPLICITY
+ assert (("libev: a signal must not be attached to two different loops",
+ !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
+
+ signals [w->signum - 1].loop = EV_A;
+#endif
+
+ EV_FREQUENT_CHECK;
+
+#if EV_USE_SIGNALFD
+ if (sigfd == -2)
+ {
+ sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
+ if (sigfd < 0 && errno == EINVAL)
+ sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
+
+ if (sigfd >= 0)
+ {
+ fd_intern (sigfd); /* doing it twice will not hurt */
+
+ sigemptyset (&sigfd_set);
+
+ ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
+ ev_set_priority (&sigfd_w, EV_MAXPRI);
+ ev_io_start (EV_A_ &sigfd_w);
+ ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
+ }
+ }
+
+ if (sigfd >= 0)
+ {
+ /* TODO: check .head */
+ sigaddset (&sigfd_set, w->signum);
+ sigprocmask (SIG_BLOCK, &sigfd_set, 0);
+
+ signalfd (sigfd, &sigfd_set, 0);
+ }
+#endif
+
+ ev_start (EV_A_ (W)w, 1);
+ wlist_add (&signals [w->signum - 1].head, (WL)w);
+
+ if (!((WL)w)->next)
+# if EV_USE_SIGNALFD
+ if (sigfd < 0) /*TODO*/
+# endif
+ {
+# ifdef _WIN32
+ evpipe_init (EV_A);
+
+ signal (w->signum, ev_sighandler);
+# else
+ struct sigaction sa;
+
+ evpipe_init (EV_A);
+
+ sa.sa_handler = ev_sighandler;
+ sigfillset (&sa.sa_mask);
+ sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
+ sigaction (w->signum, &sa, 0);
+
+ if (origflags & EVFLAG_NOSIGMASK)
+ {
+ sigemptyset (&sa.sa_mask);
+ sigaddset (&sa.sa_mask, w->signum);
+ sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
+ }
+#endif
+ }
+
+ EV_FREQUENT_CHECK;
+}
+
+void noinline
+ev_signal_stop (EV_P_ ev_signal *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ wlist_del (&signals [w->signum - 1].head, (WL)w);
+ ev_stop (EV_A_ (W)w);
+
+ if (!signals [w->signum - 1].head)
+ {
+#if EV_MULTIPLICITY
+ signals [w->signum - 1].loop = 0; /* unattach from signal */
+#endif
+#if EV_USE_SIGNALFD
+ if (sigfd >= 0)
+ {
+ sigset_t ss;
+
+ sigemptyset (&ss);
+ sigaddset (&ss, w->signum);
+ sigdelset (&sigfd_set, w->signum);
+
+ signalfd (sigfd, &sigfd_set, 0);
+ sigprocmask (SIG_UNBLOCK, &ss, 0);
+ }
+ else
+#endif
+ signal (w->signum, SIG_DFL);
+ }
+
+ EV_FREQUENT_CHECK;
+}
+
+#endif
+
+#if EV_CHILD_ENABLE
+
+void
+ev_child_start (EV_P_ ev_child *w)
+{
+#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)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ ev_start (EV_A_ (W)w, 1);
+ wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
+
+ EV_FREQUENT_CHECK;
+}
+
+void
+ev_child_stop (EV_P_ ev_child *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
+ ev_stop (EV_A_ (W)w);
+
+ EV_FREQUENT_CHECK;
+}
+
+#endif
+
+#if EV_STAT_ENABLE
+
+# ifdef _WIN32
+# undef lstat
+# define lstat(a,b) _stati64 (a,b)
+# endif
+
+#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);
+
+#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
+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);
+
+ if (w->wd >= 0)
+ {
+ struct statfs sfs;
+
+ /* now local changes will be tracked by inotify, but remote changes won't */
+ /* unless the filesystem is known to be local, we therefore still poll */
+ /* also do poll on <2.6.25, but with normal frequency */
+
+ if (!fs_2625)
+ w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
+ else if (!statfs (w->path, &sfs)
+ && (sfs.f_type == 0x1373 /* devfs */
+ || sfs.f_type == 0xEF53 /* ext2/3 */
+ || sfs.f_type == 0x3153464a /* jfs */
+ || sfs.f_type == 0x52654973 /* reiser3 */
+ || sfs.f_type == 0x01021994 /* tempfs */
+ || sfs.f_type == 0x58465342 /* xfs */))
+ w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
+ else
+ w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
+ }
+ else
+ {
+ /* can't use inotify, continue to stat */
+ w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
+
+ /* if path is not there, monitor some parent directory for speedup hints */
+ /* note that exceeding the hardcoded path limit is not a correctness issue, */
+ /* but an efficiency issue only */
+ if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
+ {
+ char path [4096];
+ strcpy (path, w->path);
+
+ do
+ {
+ int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
+ | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
+
+ char *pend = strrchr (path, '/');
+
+ if (!pend || pend == path)
+ break;
+
+ *pend = 0;
+ w->wd = inotify_add_watch (fs_fd, path, mask);
+ }
+ while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
+ }
+ }
+
+ if (w->wd >= 0)
+ wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
+
+ /* now re-arm timer, if required */
+ 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
+infy_del (EV_P_ ev_stat *w)
+{
+ int slot;
+ int wd = w->wd;
+
+ if (wd < 0)
+ return;
+
+ w->wd = -2;
+ slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
+ wlist_del (&fs_hash [slot].head, (WL)w);
+
+ /* remove this watcher, if others are watching it, they will rearm */
+ inotify_rm_watch (fs_fd, wd);
+}
+
+static void noinline
+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_ slot, wd, ev);
+ else
+ {
+ WL w_;
+
+ for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
+ {
+ ev_stat *w = (ev_stat *)w_;
+ w_ = w_->next; /* lets us remove this watcher and all before it */
+
+ if (w->wd == wd || wd == -1)
+ {
+ if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
+ {
+ wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
+ w->wd = -1;
+ infy_add (EV_A_ w); /* re-add, no matter what */
+ }
+
+ stat_timer_cb (EV_A_ &w->timer, 0);
+ }
+ }
+ }
+}
+
+static void
+infy_cb (EV_P_ ev_io *w, int revents)
+{
+ char buf [EV_INOTIFY_BUFSIZE];
+ int ofs;
+ int len = read (fs_fd, buf, sizeof (buf));
+
+ for (ofs = 0; ofs < len; )
+ {
+ struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
+ infy_wd (EV_A_ ev->wd, ev->wd, ev);
+ ofs += sizeof (struct inotify_event) + ev->len;
+ }
+}
+
+inline_size void
+ev_check_2625 (EV_P)
+{
+ /* kernels < 2.6.25 are borked
+ * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
+ */
+ if (ev_linux_version () < 0x020619)
+ return;
+
+ fs_2625 = 1;
+}
+
+inline_size int
+infy_newfd (void)
+{
+#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
+ int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
+ if (fd >= 0)
+ return fd;
+#endif
+ return inotify_init ();
+}
+
+inline_size void
+infy_init (EV_P)
+{
+ if (fs_fd != -2)
+ return;
+
+ fs_fd = -1;
+
+ ev_check_2625 (EV_A);
+
+ fs_fd = infy_newfd ();
+
+ if (fs_fd >= 0)
+ {
+ fd_intern (fs_fd);
+ ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
+ ev_set_priority (&fs_w, EV_MAXPRI);
+ ev_io_start (EV_A_ &fs_w);
+ ev_unref (EV_A);
+ }
+}
+
+inline_size void
+infy_fork (EV_P)
+{
+ int slot;
+
+ if (fs_fd < 0)
+ return;
+
+ ev_ref (EV_A);
+ ev_io_stop (EV_A_ &fs_w);
+ close (fs_fd);
+ fs_fd = infy_newfd ();
+
+ if (fs_fd >= 0)
+ {
+ fd_intern (fs_fd);
+ ev_io_set (&fs_w, fs_fd, EV_READ);
+ ev_io_start (EV_A_ &fs_w);
+ ev_unref (EV_A);
+ }
+
+ for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
+ {
+ WL w_ = fs_hash [slot].head;
+ fs_hash [slot].head = 0;
+
+ while (w_)
+ {
+ ev_stat *w = (ev_stat *)w_;
+ w_ = w_->next; /* lets us add this watcher */
+
+ w->wd = -1;
+
+ if (fs_fd >= 0)
+ infy_add (EV_A_ w); /* re-add, no matter what */
+ else
+ {
+ w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
+ 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);
+ }
+ }
+ }
+}
+
+#endif
+
+#ifdef _WIN32
+# define EV_LSTAT(p,b) _stati64 (p, b)
+#else
+# define EV_LSTAT(p,b) lstat (p, b)
+#endif
+
+void
+ev_stat_stat (EV_P_ ev_stat *w)
+{
+ 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
+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_stat_stat (EV_A_ w);
+
+ /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
+ if (
+ prev.st_dev != w->attr.st_dev
+ || prev.st_ino != w->attr.st_ino
+ || prev.st_mode != w->attr.st_mode
+ || prev.st_nlink != w->attr.st_nlink
+ || prev.st_uid != w->attr.st_uid
+ || prev.st_gid != w->attr.st_gid
+ || prev.st_rdev != w->attr.st_rdev
+ || prev.st_size != w->attr.st_size
+ || prev.st_atime != w->attr.st_atime
+ || prev.st_mtime != w->attr.st_mtime
+ || prev.st_ctime != w->attr.st_ctime
+ ) {
+ /* we only update w->prev on actual differences */
+ /* in case we test more often than invoke the callback, */
+ /* to ensure that prev is always different to attr */
+ w->prev = prev;
+
+ #if EV_USE_INOTIFY
+ if (fs_fd >= 0)
+ {
+ infy_del (EV_A_ w);
+ infy_add (EV_A_ w);
+ ev_stat_stat (EV_A_ w); /* avoid race... */
+ }
+ #endif
+
+ ev_feed_event (EV_A_ w, EV_STAT);
+ }
+}
+
+void
+ev_stat_start (EV_P_ ev_stat *w)
+{
+ if (expect_false (ev_is_active (w)))
+ return;
+
+ ev_stat_stat (EV_A_ w);
+
+ if (w->interval < MIN_STAT_INTERVAL && w->interval)
+ w->interval = MIN_STAT_INTERVAL;
+
+ ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
+ ev_set_priority (&w->timer, ev_priority (w));
+
+#if EV_USE_INOTIFY
+ infy_init (EV_A);
+
+ if (fs_fd >= 0)
+ infy_add (EV_A_ w);
+ else
+#endif
+ {
+ ev_timer_again (EV_A_ &w->timer);
+ ev_unref (EV_A);
+ }
+
+ ev_start (EV_A_ (W)w, 1);
+
+ EV_FREQUENT_CHECK;
+}
+
+void
+ev_stat_stop (EV_P_ ev_stat *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+#if EV_USE_INOTIFY
+ infy_del (EV_A_ w);
+#endif
+
+ if (ev_is_active (&w->timer))
+ {
+ ev_ref (EV_A);
+ ev_timer_stop (EV_A_ &w->timer);
+ }
+
+ ev_stop (EV_A_ (W)w);
+
+ EV_FREQUENT_CHECK;
+}
+#endif
+
+#if EV_IDLE_ENABLE
+void
+ev_idle_start (EV_P_ ev_idle *w)
+{
+ if (expect_false (ev_is_active (w)))
+ return;
+
+ pri_adjust (EV_A_ (W)w);
+
+ EV_FREQUENT_CHECK;
+
+ {
+ 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);
+ idles [ABSPRI (w)][active - 1] = w;
+ }
+
+ EV_FREQUENT_CHECK;
+}
+
+void
+ev_idle_stop (EV_P_ ev_idle *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ {
+ int active = ev_active (w);
+
+ idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
+ ev_active (idles [ABSPRI (w)][active - 1]) = active;
+
+ ev_stop (EV_A_ (W)w);
+ --idleall;
+ }
+
+ EV_FREQUENT_CHECK;
+}
+#endif
+
+#if EV_PREPARE_ENABLE
+void
+ev_prepare_start (EV_P_ ev_prepare *w)
+{
+ 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);
+ prepares [preparecnt - 1] = w;
+
+ EV_FREQUENT_CHECK;
+}
+
+void
+ev_prepare_stop (EV_P_ ev_prepare *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ {
+ int active = ev_active (w);
+
+ prepares [active - 1] = prepares [--preparecnt];
+ ev_active (prepares [active - 1]) = active;
+ }
+
+ ev_stop (EV_A_ (W)w);
+
+ EV_FREQUENT_CHECK;
+}
+#endif
+
+#if EV_CHECK_ENABLE
+void
+ev_check_start (EV_P_ ev_check *w)
+{
+ 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);
+ checks [checkcnt - 1] = w;
+
+ EV_FREQUENT_CHECK;
+}
+
+void
+ev_check_stop (EV_P_ ev_check *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ {
+ int active = ev_active (w);
+
+ checks [active - 1] = checks [--checkcnt];
+ ev_active (checks [active - 1]) = active;
+ }
+
+ ev_stop (EV_A_ (W)w);
+
+ EV_FREQUENT_CHECK;
+}
+#endif
+
+#if EV_EMBED_ENABLE
+void noinline
+ev_embed_sweep (EV_P_ ev_embed *w)
+{
+ ev_run (w->other, EVRUN_NOWAIT);
+}
+
+static void
+embed_io_cb (EV_P_ ev_io *io, int revents)
+{
+ ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
+
+ if (ev_cb (w))
+ ev_feed_event (EV_A_ (W)w, EV_EMBED);
+ else
+ ev_run (w->other, EVRUN_NOWAIT);
+}
+
+static void
+embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
+{
+ ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
+
+ {
+ EV_P = w->other;
+
+ while (fdchangecnt)
+ {
+ fd_reify (EV_A);
+ ev_run (EV_A_ EVRUN_NOWAIT);
+ }
+ }
+}
+
+static void
+embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
+{
+ ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
+
+ ev_embed_stop (EV_A_ w);
+
+ {
+ EV_P = w->other;
+
+ ev_loop_fork (EV_A);
+ ev_run (EV_A_ EVRUN_NOWAIT);
+ }
+
+ ev_embed_start (EV_A_ w);
+}
+
+#if 0
+static void
+embed_idle_cb (EV_P_ ev_idle *idle, int revents)
+{
+ ev_idle_stop (EV_A_ idle);
+}
+#endif
+
+void
+ev_embed_start (EV_P_ ev_embed *w)
+{
+ if (expect_false (ev_is_active (w)))
+ return;
+
+ {
+ EV_P = w->other;
+ assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
+ ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
+ }
+
+ EV_FREQUENT_CHECK;
+
+ ev_set_priority (&w->io, ev_priority (w));
+ ev_io_start (EV_A_ &w->io);
+
+ ev_prepare_init (&w->prepare, embed_prepare_cb);
+ ev_set_priority (&w->prepare, EV_MINPRI);
+ ev_prepare_start (EV_A_ &w->prepare);
+
+ ev_fork_init (&w->fork, embed_fork_cb);
+ ev_fork_start (EV_A_ &w->fork);
+
+ /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
+
+ ev_start (EV_A_ (W)w, 1);
+
+ EV_FREQUENT_CHECK;
+}
+
+void
+ev_embed_stop (EV_P_ ev_embed *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ ev_io_stop (EV_A_ &w->io);
+ ev_prepare_stop (EV_A_ &w->prepare);
+ ev_fork_stop (EV_A_ &w->fork);
+
+ ev_stop (EV_A_ (W)w);
+
+ EV_FREQUENT_CHECK;
+}
+#endif
+
+#if EV_FORK_ENABLE
+void
+ev_fork_start (EV_P_ ev_fork *w)
+{
+ 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);
+ forks [forkcnt - 1] = w;
+
+ EV_FREQUENT_CHECK;
+}
+
+void
+ev_fork_stop (EV_P_ ev_fork *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ {
+ int active = ev_active (w);
+
+ forks [active - 1] = forks [--forkcnt];
+ ev_active (forks [active - 1]) = active;
+ }
+
+ ev_stop (EV_A_ (W)w);
+
+ EV_FREQUENT_CHECK;
+}
+#endif
+
+#if EV_CLEANUP_ENABLE
+void
+ev_cleanup_start (EV_P_ ev_cleanup *w)
+{
+ 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);
+ 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)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+ ev_ref (EV_A);
+
+ {
+ int active = ev_active (w);
+
+ cleanups [active - 1] = cleanups [--cleanupcnt];
+ ev_active (cleanups [active - 1]) = active;
+ }
+
+ ev_stop (EV_A_ (W)w);
+
+ EV_FREQUENT_CHECK;
+}
+#endif
+
+#if EV_ASYNC_ENABLE
+void
+ev_async_start (EV_P_ ev_async *w)
+{
+ 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);
+ asyncs [asynccnt - 1] = w;
+
+ EV_FREQUENT_CHECK;
+}
+
+void
+ev_async_stop (EV_P_ ev_async *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ {
+ int active = ev_active (w);
+
+ asyncs [active - 1] = asyncs [--asynccnt];
+ ev_active (asyncs [active - 1]) = active;
+ }
+
+ ev_stop (EV_A_ (W)w);
+
+ EV_FREQUENT_CHECK;
+}
+
+void
+ev_async_send (EV_P_ ev_async *w)
+{
+ w->sent = 1;
+ evpipe_write (EV_A_ &async_pending);
+}
+#endif
+
+/*****************************************************************************/
+
+struct ev_once
+{
+ ev_io io;
+ ev_timer to;
+ void (*cb)(int revents, void *arg);
+ void *arg;
+};
+
+static void
+once_cb (EV_P_ struct ev_once *once, int revents)
+{
+ void (*cb)(int revents, void *arg) = once->cb;
+ void *arg = once->arg;
+
+ ev_io_stop (EV_A_ &once->io);
+ ev_timer_stop (EV_A_ &once->to);
+ ev_free (once);
+
+ cb (revents, arg);
+}
+
+static void
+once_cb_io (EV_P_ ev_io *w, int revents)
+{
+ struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
+
+ once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
+}
+
+static void
+once_cb_to (EV_P_ ev_timer *w, int revents)
+{
+ struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
+
+ 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)
+{
+ 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 (fd >= 0)
+ {
+ ev_io_set (&once->io, fd, events);
+ ev_io_start (EV_A_ &once->io);
+ }
+
+ ev_init (&once->to, once_cb_to);
+ if (timeout >= 0.)
+ {
+ ev_timer_set (&once->to, timeout, 0.);
+ ev_timer_start (EV_A_ &once->to);
+ }
+}
+
+/*****************************************************************************/
+
+#if EV_WALK_ENABLE
+void
+ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
+{
+ int i, j;
+ ev_watcher_list *wl, *wn;
+
+ if (types & (EV_IO | EV_EMBED))
+ for (i = 0; i < anfdmax; ++i)
+ for (wl = anfds [i].head; wl; )
+ {
+ wn = wl->next;
+
+#if EV_EMBED_ENABLE
+ if (ev_cb ((ev_io *)wl) == embed_io_cb)
+ {
+ if (types & EV_EMBED)
+ cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
+ }
+ else
+#endif
+#if EV_USE_INOTIFY
+ if (ev_cb ((ev_io *)wl) == infy_cb)
+ ;
+ else
+#endif
+ if ((ev_io *)wl != &pipe_w)
+ if (types & EV_IO)
+ cb (EV_A_ EV_IO, wl);
+
+ wl = wn;
+ }
+
+ if (types & (EV_TIMER | EV_STAT))
+ for (i = timercnt + HEAP0; i-- > HEAP0; )
+#if EV_STAT_ENABLE
+ /*TODO: timer is not always active*/
+ if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
+ {
+ if (types & EV_STAT)
+ cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
+ }
+ else
+#endif
+ if (types & EV_TIMER)
+ cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
+
+#if EV_PERIODIC_ENABLE
+ if (types & EV_PERIODIC)
+ for (i = periodiccnt + HEAP0; i-- > HEAP0; )
+ cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
+#endif
+
+#if EV_IDLE_ENABLE
+ if (types & EV_IDLE)
+ for (j = NUMPRI; i--; )
+ for (i = idlecnt [j]; i--; )
+ cb (EV_A_ EV_IDLE, idles [j][i]);
+#endif
+
+#if EV_FORK_ENABLE
+ if (types & EV_FORK)
+ for (i = forkcnt; i--; )
+ if (ev_cb (forks [i]) != embed_fork_cb)
+ cb (EV_A_ EV_FORK, forks [i]);
+#endif
+
+#if EV_ASYNC_ENABLE
+ if (types & EV_ASYNC)
+ for (i = asynccnt; i--; )
+ cb (EV_A_ EV_ASYNC, asyncs [i]);
+#endif
+
+#if EV_PREPARE_ENABLE
+ if (types & EV_PREPARE)
+ for (i = preparecnt; i--; )
+# if EV_EMBED_ENABLE
+ if (ev_cb (prepares [i]) != embed_prepare_cb)
+# endif
+ cb (EV_A_ EV_PREPARE, prepares [i]);
+#endif
+
+#if EV_CHECK_ENABLE
+ if (types & EV_CHECK)
+ for (i = checkcnt; i--; )
+ cb (EV_A_ EV_CHECK, checks [i]);
+#endif
+
+#if EV_SIGNAL_ENABLE
+ if (types & EV_SIGNAL)
+ for (i = 0; i < EV_NSIG - 1; ++i)
+ for (wl = signals [i].head; wl; )
+ {
+ wn = wl->next;
+ cb (EV_A_ EV_SIGNAL, wl);
+ wl = wn;
+ }
+#endif
+
+#if EV_CHILD_ENABLE
+ if (types & EV_CHILD)
+ for (i = (EV_PID_HASHSIZE); i--; )
+ for (wl = childs [i]; wl; )
+ {
+ wn = wl->next;
+ cb (EV_A_ EV_CHILD, wl);
+ wl = wn;
+ }
+#endif
+/* EV_STAT 0x00001000 /* stat data changed */
+/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
+}
+#endif
+
+#if EV_MULTIPLICITY
+ #include "ev_wrap.h"
+#endif
+
+EV_CPP(})
+
--- /dev/null
+/*
+ * libev native API header
+ *
+ * Copyright (c) 2007,2008,2009,2010,2011 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:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
+ * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
+ * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * 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 EV_H_
+#define EV_H_
+
+#ifdef __cplusplus
+# define EV_CPP(x) x
+#else
+# define EV_CPP(x)
+#endif
+
+EV_CPP(extern "C" {)
+
+/*****************************************************************************/
+
+/* pre-4.0 compatibility */
+#ifndef EV_COMPAT3
+# define EV_COMPAT3 1
+#endif
+
+#ifndef EV_FEATURES
+# define EV_FEATURES 0x7f
+#endif
+
+#define EV_FEATURE_CODE ((EV_FEATURES) & 1)
+#define EV_FEATURE_DATA ((EV_FEATURES) & 2)
+#define EV_FEATURE_CONFIG ((EV_FEATURES) & 4)
+#define EV_FEATURE_API ((EV_FEATURES) & 8)
+#define EV_FEATURE_WATCHERS ((EV_FEATURES) & 16)
+#define EV_FEATURE_BACKENDS ((EV_FEATURES) & 32)
+#define EV_FEATURE_OS ((EV_FEATURES) & 64)
+
+/* these priorities are inclusive, higher priorities will be invoked earlier */
+#ifndef EV_MINPRI
+# define EV_MINPRI (EV_FEATURE_CONFIG ? -2 : 0)
+#endif
+#ifndef EV_MAXPRI
+# define EV_MAXPRI (EV_FEATURE_CONFIG ? +2 : 0)
+#endif
+
+#ifndef EV_MULTIPLICITY
+# define EV_MULTIPLICITY EV_FEATURE_CONFIG
+#endif
+
+#ifndef EV_PERIODIC_ENABLE
+# define EV_PERIODIC_ENABLE EV_FEATURE_WATCHERS
+#endif
+
+#ifndef EV_STAT_ENABLE
+# define EV_STAT_ENABLE EV_FEATURE_WATCHERS
+#endif
+
+#ifndef EV_PREPARE_ENABLE
+# define EV_PREPARE_ENABLE EV_FEATURE_WATCHERS
+#endif
+
+#ifndef EV_CHECK_ENABLE
+# define EV_CHECK_ENABLE EV_FEATURE_WATCHERS
+#endif
+
+#ifndef EV_IDLE_ENABLE
+# define EV_IDLE_ENABLE EV_FEATURE_WATCHERS
+#endif
+
+#ifndef EV_FORK_ENABLE
+# define EV_FORK_ENABLE EV_FEATURE_WATCHERS
+#endif
+
+#ifndef EV_CLEANUP_ENABLE
+# define EV_CLEANUP_ENABLE EV_FEATURE_WATCHERS
+#endif
+
+#ifndef EV_SIGNAL_ENABLE
+# define EV_SIGNAL_ENABLE EV_FEATURE_WATCHERS
+#endif
+
+#ifndef EV_CHILD_ENABLE
+# ifdef _WIN32
+# define EV_CHILD_ENABLE 0
+# else
+# define EV_CHILD_ENABLE EV_FEATURE_WATCHERS
+#endif
+#endif
+
+#ifndef EV_ASYNC_ENABLE
+# define EV_ASYNC_ENABLE EV_FEATURE_WATCHERS
+#endif
+
+#ifndef EV_EMBED_ENABLE
+# define EV_EMBED_ENABLE EV_FEATURE_WATCHERS
+#endif
+
+#ifndef EV_WALK_ENABLE
+# define EV_WALK_ENABLE 0 /* not yet */
+#endif
+
+/*****************************************************************************/
+
+#if EV_CHILD_ENABLE && !EV_SIGNAL_ENABLE
+# undef EV_SIGNAL_ENABLE
+# define EV_SIGNAL_ENABLE 1
+#endif
+
+/*****************************************************************************/
+
+typedef double ev_tstamp;
+
+#ifndef EV_ATOMIC_T
+# include <signal.h>
+# define EV_ATOMIC_T sig_atomic_t volatile
+#endif
+
+#if EV_STAT_ENABLE
+# ifdef _WIN32
+# include <time.h>
+# include <sys/types.h>
+# endif
+# include <sys/stat.h>
+#endif
+
+/* support multiple event loops? */
+#if EV_MULTIPLICITY
+struct ev_loop;
+# define EV_P struct ev_loop *loop /* a loop as sole parameter in a declaration */
+# define EV_P_ EV_P, /* a loop as first of multiple parameters */
+# define EV_A loop /* a loop as sole argument to a function call */
+# define EV_A_ EV_A, /* a loop as first of multiple arguments */
+# define EV_DEFAULT_UC ev_default_loop_uc_ () /* the default loop, if initialised, as sole arg */
+# define EV_DEFAULT_UC_ EV_DEFAULT_UC, /* the default loop as first of multiple arguments */
+# define EV_DEFAULT ev_default_loop (0) /* the default loop as sole arg */
+# define EV_DEFAULT_ EV_DEFAULT, /* the default loop as first of multiple arguments */
+#else
+# define EV_P void
+# define EV_P_
+# define EV_A
+# define EV_A_
+# define EV_DEFAULT
+# define EV_DEFAULT_
+# define EV_DEFAULT_UC
+# define EV_DEFAULT_UC_
+# undef EV_EMBED_ENABLE
+#endif
+
+/* EV_INLINE is used for functions in header files */
+#if __STDC_VERSION__ >= 199901L || __GNUC__ >= 3
+# define EV_INLINE static inline
+#else
+# define EV_INLINE static
+#endif
+
+/* EV_PROTOTYPES can be used to switch of prototype declarations */
+#ifndef EV_PROTOTYPES
+# define EV_PROTOTYPES 1
+#endif
+
+/*****************************************************************************/
+
+#define EV_VERSION_MAJOR 4
+#define EV_VERSION_MINOR 4
+
+/* eventmask, revents, events... */
+enum {
+ EV_UNDEF = 0xFFFFFFFF, /* guaranteed to be invalid */
+ EV_NONE = 0x00, /* no events */
+ EV_READ = 0x01, /* ev_io detected read will not block */
+ EV_WRITE = 0x02, /* ev_io detected write will not block */
+ EV__IOFDSET = 0x80, /* internal use only */
+ EV_IO = EV_READ, /* alias for type-detection */
+ EV_TIMER = 0x00000100, /* timer timed out */
+#if EV_COMPAT3
+ EV_TIMEOUT = EV_TIMER, /* pre 4.0 API compatibility */
+#endif
+ EV_PERIODIC = 0x00000200, /* periodic timer timed out */
+ EV_SIGNAL = 0x00000400, /* signal was received */
+ EV_CHILD = 0x00000800, /* child/pid had status change */
+ EV_STAT = 0x00001000, /* stat data changed */
+ EV_IDLE = 0x00002000, /* event loop is idling */
+ EV_PREPARE = 0x00004000, /* event loop about to poll */
+ EV_CHECK = 0x00008000, /* event loop finished poll */
+ EV_EMBED = 0x00010000, /* embedded event loop needs sweep */
+ EV_FORK = 0x00020000, /* event loop resumed in child */
+ EV_CLEANUP = 0x00040000, /* event loop resumed in child */
+ EV_ASYNC = 0x00080000, /* async intra-loop signal */
+ EV_CUSTOM = 0x01000000, /* for use by user code */
+ EV_ERROR = 0x80000000 /* sent when an error occurs */
+};
+
+/* can be used to add custom fields to all watchers, while losing binary compatibility */
+#ifndef EV_COMMON
+# define EV_COMMON void *data;
+#endif
+
+#ifndef EV_CB_DECLARE
+# define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents);
+#endif
+#ifndef EV_CB_INVOKE
+# define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents))
+#endif
+
+/* not official, do not use */
+#define EV_CB(type,name) void name (EV_P_ struct ev_ ## type *w, int revents)
+
+/*
+ * struct member types:
+ * private: you may look at them, but not change them,
+ * and they might not mean anything to you.
+ * ro: can be read anytime, but only changed when the watcher isn't active.
+ * rw: can be read and modified anytime, even when the watcher is active.
+ *
+ * some internal details that might be helpful for debugging:
+ *
+ * active is either 0, which means the watcher is not active,
+ * or the array index of the watcher (periodics, timers)
+ * or the array index + 1 (most other watchers)
+ * or simply 1 for watchers that aren't in some array.
+ * pending is either 0, in which case the watcher isn't,
+ * or the array index + 1 in the pendings array.
+ */
+
+#if EV_MINPRI == EV_MAXPRI
+# define EV_DECL_PRIORITY
+#elif !defined (EV_DECL_PRIORITY)
+# define EV_DECL_PRIORITY int priority;
+#endif
+
+/* shared by all watchers */
+#define EV_WATCHER(type) \
+ int active; /* private */ \
+ int pending; /* private */ \
+ EV_DECL_PRIORITY /* private */ \
+ EV_COMMON /* rw */ \
+ EV_CB_DECLARE (type) /* private */
+
+#define EV_WATCHER_LIST(type) \
+ EV_WATCHER (type) \
+ struct ev_watcher_list *next; /* private */
+
+#define EV_WATCHER_TIME(type) \
+ EV_WATCHER (type) \
+ ev_tstamp at; /* private */
+
+/* base class, nothing to see here unless you subclass */
+typedef struct ev_watcher
+{
+ EV_WATCHER (ev_watcher)
+} ev_watcher;
+
+/* base class, nothing to see here unless you subclass */
+typedef struct ev_watcher_list
+{
+ EV_WATCHER_LIST (ev_watcher_list)
+} ev_watcher_list;
+
+/* base class, nothing to see here unless you subclass */
+typedef struct ev_watcher_time
+{
+ EV_WATCHER_TIME (ev_watcher_time)
+} ev_watcher_time;
+
+/* invoked when fd is either EV_READable or EV_WRITEable */
+/* revent EV_READ, EV_WRITE */
+typedef struct ev_io
+{
+ EV_WATCHER_LIST (ev_io)
+
+ int fd; /* ro */
+ int events; /* ro */
+} ev_io;
+
+/* invoked after a specific time, repeatable (based on monotonic clock) */
+/* revent EV_TIMEOUT */
+typedef struct ev_timer
+{
+ EV_WATCHER_TIME (ev_timer)
+
+ ev_tstamp repeat; /* rw */
+} ev_timer;
+
+/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */
+/* revent EV_PERIODIC */
+typedef struct ev_periodic
+{
+ EV_WATCHER_TIME (ev_periodic)
+
+ ev_tstamp offset; /* rw */
+ ev_tstamp interval; /* rw */
+ ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */
+} ev_periodic;
+
+/* invoked when the given signal has been received */
+/* revent EV_SIGNAL */
+typedef struct ev_signal
+{
+ EV_WATCHER_LIST (ev_signal)
+
+ int signum; /* ro */
+} ev_signal;
+
+/* invoked when sigchld is received and waitpid indicates the given pid */
+/* revent EV_CHILD */
+/* does not support priorities */
+typedef struct ev_child
+{
+ EV_WATCHER_LIST (ev_child)
+
+ int flags; /* private */
+ int pid; /* ro */
+ int rpid; /* rw, holds the received pid */
+ int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */
+} ev_child;
+
+#if EV_STAT_ENABLE
+/* st_nlink = 0 means missing file or other error */
+# ifdef _WIN32
+typedef struct _stati64 ev_statdata;
+# else
+typedef struct stat ev_statdata;
+# endif
+
+/* invoked each time the stat data changes for a given path */
+/* revent EV_STAT */
+typedef struct ev_stat
+{
+ EV_WATCHER_LIST (ev_stat)
+
+ ev_timer timer; /* private */
+ ev_tstamp interval; /* ro */
+ const char *path; /* ro */
+ ev_statdata prev; /* ro */
+ ev_statdata attr; /* ro */
+
+ int wd; /* wd for inotify, fd for kqueue */
+} ev_stat;
+#endif
+
+#if EV_IDLE_ENABLE
+/* invoked when the nothing else needs to be done, keeps the process from blocking */
+/* revent EV_IDLE */
+typedef struct ev_idle
+{
+ EV_WATCHER (ev_idle)
+} ev_idle;
+#endif
+
+/* invoked for each run of the mainloop, just before the blocking call */
+/* you can still change events in any way you like */
+/* revent EV_PREPARE */
+typedef struct ev_prepare
+{
+ EV_WATCHER (ev_prepare)
+} ev_prepare;
+
+/* invoked for each run of the mainloop, just after the blocking call */
+/* revent EV_CHECK */
+typedef struct ev_check
+{
+ EV_WATCHER (ev_check)
+} ev_check;
+
+#if EV_FORK_ENABLE
+/* the callback gets invoked before check in the child process when a fork was detected */
+/* revent EV_FORK */
+typedef struct ev_fork
+{
+ EV_WATCHER (ev_fork)
+} ev_fork;
+#endif
+
+#if EV_CLEANUP_ENABLE
+/* is invoked just before the loop gets destroyed */
+/* revent EV_CLEANUP */
+typedef struct ev_cleanup
+{
+ EV_WATCHER (ev_cleanup)
+} ev_cleanup;
+#endif
+
+#if EV_EMBED_ENABLE
+/* used to embed an event loop inside another */
+/* the callback gets invoked when the event loop has handled events, and can be 0 */
+typedef struct ev_embed
+{
+ EV_WATCHER (ev_embed)
+
+ struct ev_loop *other; /* ro */
+ ev_io io; /* private */
+ ev_prepare prepare; /* private */
+ ev_check check; /* unused */
+ ev_timer timer; /* unused */
+ ev_periodic periodic; /* unused */
+ ev_idle idle; /* unused */
+ ev_fork fork; /* private */
+#if EV_CLEANUP_ENABLE
+ ev_cleanup cleanup; /* unused */
+#endif
+} ev_embed;
+#endif
+
+#if EV_ASYNC_ENABLE
+/* invoked when somebody calls ev_async_send on the watcher */
+/* revent EV_ASYNC */
+typedef struct ev_async
+{
+ EV_WATCHER (ev_async)
+
+ EV_ATOMIC_T sent; /* private */
+} ev_async;
+
+# define ev_async_pending(w) (+(w)->sent)
+#endif
+
+/* the presence of this union forces similar struct layout */
+union ev_any_watcher
+{
+ struct ev_watcher w;
+ struct ev_watcher_list wl;
+
+ struct ev_io io;
+ struct ev_timer timer;
+ struct ev_periodic periodic;
+ struct ev_signal signal;
+ struct ev_child child;
+#if EV_STAT_ENABLE
+ struct ev_stat stat;
+#endif
+#if EV_IDLE_ENABLE
+ struct ev_idle idle;
+#endif
+ struct ev_prepare prepare;
+ struct ev_check check;
+#if EV_FORK_ENABLE
+ struct ev_fork fork;
+#endif
+#if EV_CLEANUP_ENABLE
+ struct ev_cleanup cleanup;
+#endif
+#if EV_EMBED_ENABLE
+ struct ev_embed embed;
+#endif
+#if EV_ASYNC_ENABLE
+ struct ev_async async;
+#endif
+};
+
+/* flag bits for ev_default_loop and ev_loop_new */
+enum {
+ /* the default */
+ EVFLAG_AUTO = 0x00000000U, /* not quite a mask */
+ /* flag bits */
+ EVFLAG_NOENV = 0x01000000U, /* do NOT consult environment */
+ EVFLAG_FORKCHECK = 0x02000000U, /* check for a fork in each iteration */
+ /* debugging/feature disable */
+ EVFLAG_NOINOTIFY = 0x00100000U, /* do not attempt to use inotify */
+#if EV_COMPAT3
+ EVFLAG_NOSIGFD = 0, /* compatibility to pre-3.9 */
+#endif
+ EVFLAG_SIGNALFD = 0x00200000U, /* attempt to use signalfd */
+ EVFLAG_NOSIGMASK = 0x00400000U /* avoid modifying the signal mask */
+};
+
+/* method bits to be ored together */
+enum {
+ EVBACKEND_SELECT = 0x00000001U, /* about anywhere */
+ EVBACKEND_POLL = 0x00000002U, /* !win */
+ EVBACKEND_EPOLL = 0x00000004U, /* linux */
+ EVBACKEND_KQUEUE = 0x00000008U, /* bsd */
+ EVBACKEND_DEVPOLL = 0x00000010U, /* solaris 8 */ /* NYI */
+ EVBACKEND_PORT = 0x00000020U, /* solaris 10 */
+ EVBACKEND_ALL = 0x0000003FU, /* all known backends */
+ EVBACKEND_MASK = 0x0000FFFFU /* all future backends */
+};
+
+#if EV_PROTOTYPES
+int ev_version_major (void);
+int ev_version_minor (void);
+
+unsigned int ev_supported_backends (void);
+unsigned int ev_recommended_backends (void);
+unsigned int ev_embeddable_backends (void);
+
+ev_tstamp ev_time (void);
+void ev_sleep (ev_tstamp delay); /* sleep for a while */
+
+/* Sets the allocation function to use, works like realloc.
+ * It is used to allocate and free memory.
+ * If it returns zero when memory needs to be allocated, the library might abort
+ * or take some potentially destructive action.
+ * The default is your system realloc function.
+ */
+void ev_set_allocator (void *(*cb)(void *ptr, long size));
+
+/* set the callback function to call on a
+ * retryable syscall error
+ * (such as failed select, poll, epoll_wait)
+ */
+void ev_set_syserr_cb (void (*cb)(const char *msg));
+
+#if EV_MULTIPLICITY
+
+/* the default loop is the only one that handles signals and child watchers */
+/* you can call this as often as you like */
+struct ev_loop *ev_default_loop (unsigned int flags EV_CPP (= 0));
+
+EV_INLINE struct ev_loop *
+ev_default_loop_uc_ (void)
+{
+ extern struct ev_loop *ev_default_loop_ptr;
+
+ return ev_default_loop_ptr;
+}
+
+EV_INLINE int
+ev_is_default_loop (EV_P)
+{
+ return EV_A == EV_DEFAULT_UC;
+}
+
+/* create and destroy alternative loops that don't handle signals */
+struct ev_loop *ev_loop_new (unsigned int flags EV_CPP (= 0));
+
+ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */
+
+#else
+
+int ev_default_loop (unsigned int flags EV_CPP (= 0)); /* returns true when successful */
+
+EV_INLINE ev_tstamp
+ev_now (void)
+{
+ extern ev_tstamp ev_rt_now;
+
+ return ev_rt_now;
+}
+
+/* looks weird, but ev_is_default_loop (EV_A) still works if this exists */
+EV_INLINE int
+ev_is_default_loop (void)
+{
+ return 1;
+}
+
+#endif /* multiplicity */
+
+/* destroy event loops, also works for the default loop */
+void ev_loop_destroy (EV_P);
+
+/* this needs to be called after fork, to duplicate the loop */
+/* when you want to re-use it in the child */
+/* you can call it in either the parent or the child */
+/* you can actually call it at any time, anywhere :) */
+void ev_loop_fork (EV_P);
+
+unsigned int ev_backend (EV_P); /* backend in use by loop */
+
+void ev_now_update (EV_P); /* update event loop time */
+
+#if EV_WALK_ENABLE
+/* walk (almost) all watchers in the loop of a given type, invoking the */
+/* callback on every such watcher. The callback might stop the watcher, */
+/* but do nothing else with the loop */
+void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w));
+#endif
+
+#endif /* prototypes */
+
+/* ev_run flags values */
+enum {
+ EVRUN_NOWAIT = 1, /* do not block/wait */
+ EVRUN_ONCE = 2 /* block *once* only */
+};
+
+/* ev_break how values */
+enum {
+ EVBREAK_CANCEL = 0, /* undo unloop */
+ EVBREAK_ONE = 1, /* unloop once */
+ EVBREAK_ALL = 2 /* unloop all loops */
+};
+
+#if EV_PROTOTYPES
+void ev_run (EV_P_ int flags EV_CPP (= 0));
+void ev_break (EV_P_ int how EV_CPP (= EVBREAK_ONE)); /* break out of the loop */
+
+/*
+ * ref/unref can be used to add or remove a refcount on the mainloop. every watcher
+ * keeps one reference. if you have a long-running watcher you never unregister that
+ * should not keep ev_loop from running, unref() after starting, and ref() before stopping.
+ */
+void ev_ref (EV_P);
+void ev_unref (EV_P);
+
+/*
+ * convenience function, wait for a single event, without registering an event watcher
+ * if timeout is < 0, do wait indefinitely
+ */
+void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg);
+
+# if EV_FEATURE_API
+unsigned int ev_iteration (EV_P); /* number of loop iterations */
+unsigned int ev_depth (EV_P); /* #ev_loop enters - #ev_loop leaves */
+void ev_verify (EV_P); /* abort if loop data corrupted */
+
+void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
+void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
+
+/* advanced stuff for threading etc. support, see docs */
+void ev_set_userdata (EV_P_ void *data);
+void *ev_userdata (EV_P);
+void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P));
+void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P));
+
+unsigned int ev_pending_count (EV_P); /* number of pending events, if any */
+void ev_invoke_pending (EV_P); /* invoke all pending watchers */
+
+/*
+ * stop/start the timer handling.
+ */
+void ev_suspend (EV_P);
+void ev_resume (EV_P);
+#endif
+
+#endif
+
+/* these may evaluate ev multiple times, and the other arguments at most once */
+/* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
+#define ev_init(ev,cb_) do { \
+ ((ev_watcher *)(void *)(ev))->active = \
+ ((ev_watcher *)(void *)(ev))->pending = 0; \
+ ev_set_priority ((ev), 0); \
+ ev_set_cb ((ev), cb_); \
+} while (0)
+
+#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV__IOFDSET; } while (0)
+#define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0)
+#define ev_periodic_set(ev,ofs_,ival_,rcb_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb = (rcb_); } while (0)
+#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)
+#define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0)
+#define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0)
+#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */
+#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */
+#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */
+#define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0)
+#define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */
+#define ev_cleanup_set(ev) /* nop, yes, this is a serious in-joke */
+#define ev_async_set(ev) /* nop, yes, this is a serious in-joke */
+
+#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)
+#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0)
+#define ev_periodic_init(ev,cb,ofs,ival,rcb) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(ofs),(ival),(rcb)); } while (0)
+#define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0)
+#define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0)
+#define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0)
+#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)
+#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)
+#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
+#define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0)
+#define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0)
+#define ev_cleanup_init(ev,cb) do { ev_init ((ev), (cb)); ev_cleanup_set ((ev)); } while (0)
+#define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0)
+
+#define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */
+#define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */
+
+#define ev_cb(ev) (ev)->cb /* rw */
+
+#if EV_MINPRI == EV_MAXPRI
+# define ev_priority(ev) ((ev), EV_MINPRI)
+# define ev_set_priority(ev,pri) ((ev), (pri))
+#else
+# define ev_priority(ev) (+(((ev_watcher *)(void *)(ev))->priority))
+# define ev_set_priority(ev,pri) ( (ev_watcher *)(void *)(ev))->priority = (pri)
+#endif
+
+#define ev_periodic_at(ev) (+((ev_watcher_time *)(ev))->at)
+
+#ifndef ev_set_cb
+# define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_)
+#endif
+
+/* stopping (enabling, adding) a watcher does nothing if it is already running */
+/* stopping (disabling, deleting) a watcher does nothing unless its already running */
+#if EV_PROTOTYPES
+
+/* feeds an event into a watcher as if the event actually occured */
+/* accepts any ev_watcher type */
+void ev_feed_event (EV_P_ void *w, int revents);
+void ev_feed_fd_event (EV_P_ int fd, int revents);
+#if EV_SIGNAL_ENABLE
+void ev_feed_signal (int signum);
+void ev_feed_signal_event (EV_P_ int signum);
+#endif
+void ev_invoke (EV_P_ void *w, int revents);
+int ev_clear_pending (EV_P_ void *w);
+
+void ev_io_start (EV_P_ ev_io *w);
+void ev_io_stop (EV_P_ ev_io *w);
+
+void ev_timer_start (EV_P_ ev_timer *w);
+void ev_timer_stop (EV_P_ ev_timer *w);
+/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
+void ev_timer_again (EV_P_ ev_timer *w);
+/* return remaining time */
+ev_tstamp ev_timer_remaining (EV_P_ ev_timer *w);
+
+#if EV_PERIODIC_ENABLE
+void ev_periodic_start (EV_P_ ev_periodic *w);
+void ev_periodic_stop (EV_P_ ev_periodic *w);
+void ev_periodic_again (EV_P_ ev_periodic *w);
+#endif
+
+/* only supported in the default loop */
+#if EV_SIGNAL_ENABLE
+void ev_signal_start (EV_P_ ev_signal *w);
+void ev_signal_stop (EV_P_ ev_signal *w);
+#endif
+
+/* only supported in the default loop */
+# if EV_CHILD_ENABLE
+void ev_child_start (EV_P_ ev_child *w);
+void ev_child_stop (EV_P_ ev_child *w);
+# endif
+
+# if EV_STAT_ENABLE
+void ev_stat_start (EV_P_ ev_stat *w);
+void ev_stat_stop (EV_P_ ev_stat *w);
+void ev_stat_stat (EV_P_ ev_stat *w);
+# endif
+
+# if EV_IDLE_ENABLE
+void ev_idle_start (EV_P_ ev_idle *w);
+void ev_idle_stop (EV_P_ ev_idle *w);
+# endif
+
+#if EV_PREPARE_ENABLE
+void ev_prepare_start (EV_P_ ev_prepare *w);
+void ev_prepare_stop (EV_P_ ev_prepare *w);
+#endif
+
+#if EV_CHECK_ENABLE
+void ev_check_start (EV_P_ ev_check *w);
+void ev_check_stop (EV_P_ ev_check *w);
+#endif
+
+# if EV_FORK_ENABLE
+void ev_fork_start (EV_P_ ev_fork *w);
+void ev_fork_stop (EV_P_ ev_fork *w);
+# endif
+
+# if EV_CLEANUP_ENABLE
+void ev_cleanup_start (EV_P_ ev_cleanup *w);
+void ev_cleanup_stop (EV_P_ ev_cleanup *w);
+# endif
+
+# if EV_EMBED_ENABLE
+/* only supported when loop to be embedded is in fact embeddable */
+void ev_embed_start (EV_P_ ev_embed *w);
+void ev_embed_stop (EV_P_ ev_embed *w);
+void ev_embed_sweep (EV_P_ ev_embed *w);
+# endif
+
+# if EV_ASYNC_ENABLE
+void ev_async_start (EV_P_ ev_async *w);
+void ev_async_stop (EV_P_ ev_async *w);
+void ev_async_send (EV_P_ ev_async *w);
+# endif
+
+#if EV_COMPAT3
+ #define EVLOOP_NONBLOCK EVRUN_NOWAIT
+ #define EVLOOP_ONESHOT EVRUN_ONCE
+ #define EVUNLOOP_CANCEL EVBREAK_CANCEL
+ #define EVUNLOOP_ONE EVBREAK_ONE
+ #define EVUNLOOP_ALL EVBREAK_ALL
+ #if EV_PROTOTYPES
+ EV_INLINE void ev_loop (EV_P_ int flags) { ev_run (EV_A_ flags); }
+ EV_INLINE void ev_unloop (EV_P_ int how ) { ev_break (EV_A_ how ); }
+ EV_INLINE void ev_default_destroy (void) { ev_loop_destroy (EV_DEFAULT); }
+ EV_INLINE void ev_default_fork (void) { ev_loop_fork (EV_DEFAULT); }
+ #if EV_FEATURE_API
+ EV_INLINE unsigned int ev_loop_count (EV_P) { return ev_iteration (EV_A); }
+ EV_INLINE unsigned int ev_loop_depth (EV_P) { return ev_depth (EV_A); }
+ EV_INLINE void ev_loop_verify (EV_P) { ev_verify (EV_A); }
+ #endif
+ #endif
+#else
+ typedef struct ev_loop ev_loop;
+#endif
+
+#endif
+
+EV_CPP(})
+
+#endif
+
projects / krb5.git / commitdiff