/*

 * libev native API header

 *

 * Copyright (c) 2007,2008,2009,2010,2011,2012,2015 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

# if __cplusplus >= 201103L

#  define EV_THROW noexcept

# else

#  define EV_THROW throw ()

# endif

#else

# define EV_CPP(x)

# define EV_THROW

#endif

EV_CPP(extern "C" {)

/*****************************************************************************/

/* pre-4.0 compatibility */

#ifndef EV_COMPAT3

# define EV_COMPAT3 1

#endif

#ifndef EV_FEATURES

# if defined __OPTIMIZE_SIZE__

#  define EV_FEATURES 0x7c

# else

#  define EV_FEATURES 0x7f

# endif

#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;

#include <string.h> /* for memmove */

#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

#ifdef EV_API_STATIC

# define EV_API_DECL static

#else

# define EV_API_DECL extern

#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 24

/* eventmask, revents, events... */

enum {

  EV_UNDEF    = (int)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    = (int)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) EV_THROW; /* 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, /* available just about anywhere */

  EVBACKEND_POLL    = 0x00000002U, /* !win, !aix, broken on osx */

  EVBACKEND_EPOLL   = 0x00000004U, /* linux */

  EVBACKEND_KQUEUE  = 0x00000008U, /* bsd, broken on osx */

  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

EV_API_DECL int ev_version_major (void) EV_THROW;

EV_API_DECL int ev_version_minor (void) EV_THROW;

EV_API_DECL unsigned int ev_supported_backends (void) EV_THROW;

EV_API_DECL unsigned int ev_recommended_backends (void) EV_THROW;

EV_API_DECL unsigned int ev_embeddable_backends (void) EV_THROW;

EV_API_DECL ev_tstamp ev_time (void) EV_THROW;

EV_API_DECL void ev_sleep (ev_tstamp delay) EV_THROW; /* 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.

 */

EV_API_DECL void ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW;

/* set the callback function to call on a

 * retryable syscall error

 * (such as failed select, poll, epoll_wait)

 */

EV_API_DECL void ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW;

#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 */

EV_API_DECL struct ev_loop *ev_default_loop (unsigned int flags EV_CPP (= 0)) EV_THROW;

#ifdef EV_API_STATIC

EV_API_DECL struct ev_loop *ev_default_loop_ptr;

#endif

EV_INLINE struct ev_loop *

ev_default_loop_uc_ (void) EV_THROW

{

  extern struct ev_loop *ev_default_loop_ptr;

  return ev_default_loop_ptr;

}

EV_INLINE int

ev_is_default_loop (EV_P) EV_THROW

{

  return EV_A == EV_DEFAULT_UC;

}

/* create and destroy alternative loops that don't handle signals */

EV_API_DECL struct ev_loop *ev_loop_new (unsigned int flags EV_CPP (= 0)) EV_THROW;

EV_API_DECL ev_tstamp ev_now (EV_P) EV_THROW; /* time w.r.t. timers and the eventloop, updated after each poll */

#else

EV_API_DECL int ev_default_loop (unsigned int flags EV_CPP (= 0)) EV_THROW; /* returns true when successful */

EV_API_DECL ev_tstamp ev_rt_now;

EV_INLINE ev_tstamp

ev_now (void) EV_THROW

{

  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) EV_THROW

{

  return 1;

}

#endif /* multiplicity */

/* destroy event loops, also works for the default loop */

EV_API_DECL 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 :) */

EV_API_DECL void ev_loop_fork (EV_P) EV_THROW;

EV_API_DECL unsigned int ev_backend (EV_P) EV_THROW; /* backend in use by loop */

EV_API_DECL void ev_now_update (EV_P) EV_THROW; /* 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 */

EV_API_DECL void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW;

#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

EV_API_DECL int  ev_run (EV_P_ int flags EV_CPP (= 0));

EV_API_DECL void ev_break (EV_P_ int how EV_CPP (= EVBREAK_ONE)) EV_THROW; /* 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.

 */

EV_API_DECL void ev_ref   (EV_P) EV_THROW;

EV_API_DECL void ev_unref (EV_P) EV_THROW;

/*

 * convenience function, wait for a single event, without registering an event watcher

 * if timeout is < 0, do wait indefinitely

 */

EV_API_DECL void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW;

# if EV_FEATURE_API

EV_API_DECL unsigned int ev_iteration (EV_P) EV_THROW; /* number of loop iterations */

EV_API_DECL unsigned int ev_depth     (EV_P) EV_THROW; /* #ev_loop enters - #ev_loop leaves */

EV_API_DECL void         ev_verify    (EV_P) EV_THROW; /* abort if loop data corrupted */

EV_API_DECL void ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW; /* sleep at least this time, default 0 */

EV_API_DECL void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW; /* sleep at least this time, default 0 */

/* advanced stuff for threading etc. support, see docs */

EV_API_DECL void ev_set_userdata (EV_P_ void *data) EV_THROW;

EV_API_DECL void *ev_userdata (EV_P) EV_THROW;

typedef void (*ev_loop_callback)(EV_P);

EV_API_DECL void ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW;

/* C++ doesn't allow the use of the ev_loop_callback typedef here, so we need to spell it out */

EV_API_DECL void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW;

EV_API_DECL unsigned int ev_pending_count (EV_P) EV_THROW; /* number of pending events, if any */

EV_API_DECL void ev_invoke_pending (EV_P); /* invoke all pending watchers */

/*

 * stop/start the timer handling.

 */

EV_API_DECL void ev_suspend (EV_P) EV_THROW;

EV_API_DECL void ev_resume  (EV_P) EV_THROW;

#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 */

#define ev_cb(ev)                            (memmove (&ev_cb_ (ev), &((ev_watcher *)(ev))->cb, sizeof (ev_cb_ (ev))), (ev)->cb)

#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_), memmove (&((ev_watcher *)(ev))->cb, &ev_cb_ (ev), sizeof (ev_cb_ (ev))))

#endif

/* stopping (enabling, adding) a watcher does nothing if it is already running */

/* stopping (disabling, deleting) a watcher does nothing unless it's already running */

#if EV_PROTOTYPES

/* feeds an event into a watcher as if the event actually occurred */

/* accepts any ev_watcher type */

EV_API_DECL void ev_feed_event     (EV_P_ void *w, int revents) EV_THROW;

EV_API_DECL void ev_feed_fd_event  (EV_P_ int fd, int revents) EV_THROW;

#if EV_SIGNAL_ENABLE

EV_API_DECL void ev_feed_signal    (int signum) EV_THROW;

EV_API_DECL void ev_feed_signal_event (EV_P_ int signum) EV_THROW;

#endif

EV_API_DECL void ev_invoke         (EV_P_ void *w, int revents);

EV_API_DECL int  ev_clear_pending  (EV_P_ void *w) EV_THROW;

EV_API_DECL void ev_io_start       (EV_P_ ev_io *w) EV_THROW;

EV_API_DECL void ev_io_stop        (EV_P_ ev_io *w) EV_THROW;

EV_API_DECL void ev_timer_start    (EV_P_ ev_timer *w) EV_THROW;

EV_API_DECL void ev_timer_stop     (EV_P_ ev_timer *w) EV_THROW;

/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */

EV_API_DECL void ev_timer_again    (EV_P_ ev_timer *w) EV_THROW;

/* return remaining time */

EV_API_DECL ev_tstamp ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW;

#if EV_PERIODIC_ENABLE

EV_API_DECL void ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW;

EV_API_DECL void ev_periodic_stop  (EV_P_ ev_periodic *w) EV_THROW;

EV_API_DECL void ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW;

#endif

/* only supported in the default loop */

#if EV_SIGNAL_ENABLE

EV_API_DECL void ev_signal_start   (EV_P_ ev_signal *w) EV_THROW;

EV_API_DECL void ev_signal_stop    (EV_P_ ev_signal *w) EV_THROW;

#endif

/* only supported in the default loop */

# if EV_CHILD_ENABLE

EV_API_DECL void ev_child_start    (EV_P_ ev_child *w) EV_THROW;

EV_API_DECL void ev_child_stop     (EV_P_ ev_child *w) EV_THROW;

# endif

# if EV_STAT_ENABLE

EV_API_DECL void ev_stat_start     (EV_P_ ev_stat *w) EV_THROW;

EV_API_DECL void ev_stat_stop      (EV_P_ ev_stat *w) EV_THROW;

EV_API_DECL void ev_stat_stat      (EV_P_ ev_stat *w) EV_THROW;

# endif

# if EV_IDLE_ENABLE

EV_API_DECL void ev_idle_start     (EV_P_ ev_idle *w) EV_THROW;

EV_API_DECL void ev_idle_stop      (EV_P_ ev_idle *w) EV_THROW;

# endif

#if EV_PREPARE_ENABLE

EV_API_DECL void ev_prepare_start  (EV_P_ ev_prepare *w) EV_THROW;

EV_API_DECL void ev_prepare_stop   (EV_P_ ev_prepare *w) EV_THROW;

#endif

#if EV_CHECK_ENABLE

EV_API_DECL void ev_check_start    (EV_P_ ev_check *w) EV_THROW;

EV_API_DECL void ev_check_stop     (EV_P_ ev_check *w) EV_THROW;

#endif

# if EV_FORK_ENABLE

EV_API_DECL void ev_fork_start     (EV_P_ ev_fork *w) EV_THROW;

EV_API_DECL void ev_fork_stop      (EV_P_ ev_fork *w) EV_THROW;

# endif

# if EV_CLEANUP_ENABLE

EV_API_DECL void ev_cleanup_start  (EV_P_ ev_cleanup *w) EV_THROW;

EV_API_DECL void ev_cleanup_stop   (EV_P_ ev_cleanup *w) EV_THROW;

# endif

# if EV_EMBED_ENABLE

/* only supported when loop to be embedded is in fact embeddable */

EV_API_DECL void ev_embed_start    (EV_P_ ev_embed *w) EV_THROW;

EV_API_DECL void ev_embed_stop     (EV_P_ ev_embed *w) EV_THROW;

EV_API_DECL void ev_embed_sweep    (EV_P_ ev_embed *w) EV_THROW;

# endif

# if EV_ASYNC_ENABLE

EV_API_DECL void ev_async_start    (EV_P_ ev_async *w) EV_THROW;

EV_API_DECL void ev_async_stop     (EV_P_ ev_async *w) EV_THROW;

EV_API_DECL void ev_async_send     (EV_P_ ev_async *w) EV_THROW;

# 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