libev/ev%2B%2B.h

/*
 * libev simple C++ wrapper classes
 *
 * Copyright (c) 2007,2008,2010 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 EVPP_H__
#define EVPP_H__

#ifdef EV_H
# include EV_H
#else
# include "ev.h"
#endif

#ifndef EV_USE_STDEXCEPT
# define EV_USE_STDEXCEPT 1
#endif

#if EV_USE_STDEXCEPT
# include <stdexcept>
#endif

namespace ev {

  typedef ev_tstamp tstamp;

  enum
  {
    UNDEF    = EV_UNDEF,
    NONE     = EV_NONE,
    READ     = EV_READ,
    WRITE    = EV_WRITE,
    TIMEOUT  = EV_TIMEOUT,
    PERIODIC = EV_PERIODIC,
    SIGNAL   = EV_SIGNAL,
    CHILD    = EV_CHILD,
    STAT     = EV_STAT,
    IDLE     = EV_IDLE,
    CHECK    = EV_CHECK,
    PREPARE  = EV_PREPARE,
    FORK     = EV_FORK,
    ASYNC    = EV_ASYNC,
    EMBED    = EV_EMBED,
#   undef ERROR // some systems stupidly #define ERROR
    ERROR    = EV_ERROR
  };

  enum
  {
    AUTO      = EVFLAG_AUTO,
    NOENV     = EVFLAG_NOENV,
    FORKCHECK = EVFLAG_FORKCHECK,

    SELECT    = EVBACKEND_SELECT,
    POLL      = EVBACKEND_POLL,
    EPOLL     = EVBACKEND_EPOLL,
    KQUEUE    = EVBACKEND_KQUEUE,
    DEVPOLL   = EVBACKEND_DEVPOLL,
    PORT      = EVBACKEND_PORT
  };

  enum
  {
    NONBLOCK = EVLOOP_NONBLOCK,
    ONESHOT  = EVLOOP_ONESHOT
  };

  enum how_t
  {
    ONE = EVUNLOOP_ONE,
    ALL = EVUNLOOP_ALL
  };

  struct bad_loop
#if EV_USE_STDEXCEPT
  : std::runtime_error
#endif
  {
#if EV_USE_STDEXCEPT
    bad_loop ()
    : std::runtime_error ("libev event loop cannot be initialized, bad value of LIBEV_FLAGS?")
    {
    }
#endif
  };

#ifdef EV_AX
#  undef EV_AX
#endif

#ifdef EV_AX_
#  undef EV_AX_
#endif

#if EV_MULTIPLICITY
#  define EV_AX  raw_loop
#  define EV_AX_ raw_loop,
#else
#  define EV_AX
#  define EV_AX_
#endif

  struct loop_ref
  {
    loop_ref (EV_P) throw ()
#if EV_MULTIPLICITY
    : EV_AX (EV_A)
#endif
    {
    }

    bool operator == (const loop_ref &other) const throw ()
    {
#if EV_MULTIPLICITY
      return EV_AX == other.EV_AX;
#else
      return true;
#endif
    }

    bool operator != (const loop_ref &other) const throw ()
    {
#if EV_MULTIPLICITY
      return ! (*this == other);
#else
      return false;
#endif
    }

#if EV_MULTIPLICITY
    bool operator == (const EV_P) const throw ()
    {
      return this->EV_AX == EV_A;
    }

    bool operator != (const EV_P) const throw ()
    {
      return (*this == EV_A);
    }

    operator struct ev_loop * () const throw ()
    {
      return EV_AX;
    }

    operator const struct ev_loop * () const throw ()
    {
      return EV_AX;
    }

    bool is_default () const throw ()
    {
      return EV_AX == ev_default_loop (0);
    }
#endif

    void loop (int flags = 0)
    {
      ev_loop (EV_AX_ flags);
    }

    void unloop (how_t how = ONE) throw ()
    {
      ev_unloop (EV_AX_ how);
    }

    void post_fork () throw ()
    {
#if EV_MULTIPLICITY
      ev_loop_fork (EV_AX);
#else
      ev_default_fork ();
#endif
    }

    unsigned int backend () const throw ()
    {
      return ev_backend (EV_AX);
    }

    tstamp now () const throw ()
    {
      return ev_now (EV_AX);
    }

    void ref () throw ()
    {
      ev_ref (EV_AX);
    }

    void unref () throw ()
    {
      ev_unref (EV_AX);
    }

#if EV_FEATURE_API
    unsigned int iteration () const throw ()
    {
      return ev_iteration (EV_AX);
    }

    unsigned int depth () const throw ()
    {
      return ev_depth (EV_AX);
    }

    void set_io_collect_interval (tstamp interval) throw ()
    {
      ev_set_io_collect_interval (EV_AX_ interval);
    }

    void set_timeout_collect_interval (tstamp interval) throw ()
    {
      ev_set_timeout_collect_interval (EV_AX_ interval);
    }
#endif

    // function callback
    void once (int fd, int events, tstamp timeout, void (*cb)(int, void *), void *arg = 0) throw ()
    {
      ev_once (EV_AX_ fd, events, timeout, cb, arg);
    }

    // method callback
    template<class K, void (K::*method)(int)>
    void once (int fd, int events, tstamp timeout, K *object) throw ()
    {
      once (fd, events, timeout, method_thunk<K, method>, object);
    }

    // default method == operator ()
    template<class K>
    void once (int fd, int events, tstamp timeout, K *object) throw ()
    {
      once (fd, events, timeout, method_thunk<K, &K::operator ()>, object);
    }

    template<class K, void (K::*method)(int)>
    static void method_thunk (int revents, void *arg)
    {
      static_cast<K *>(arg)->*method
        (revents);
    }

    // no-argument method callback
    template<class K, void (K::*method)()>
    void once (int fd, int events, tstamp timeout, K *object) throw ()
    {
      once (fd, events, timeout, method_noargs_thunk<K, method>, object);
    }

    template<class K, void (K::*method)()>
    static void method_noargs_thunk (int revents, void *arg)
    {
      static_cast<K *>(arg)->*method
        ();
    }

    // simpler function callback
    template<void (*cb)(int)>
    void once (int fd, int events, tstamp timeout) throw ()
    {
      once (fd, events, timeout, simpler_func_thunk<cb>);
    }

    template<void (*cb)(int)>
    static void simpler_func_thunk (int revents, void *arg)
    {
      (*cb)
        (revents);
    }

    // simplest function callback
    template<void (*cb)()>
    void once (int fd, int events, tstamp timeout) throw ()
    {
      once (fd, events, timeout, simplest_func_thunk<cb>);
    }

    template<void (*cb)()>
    static void simplest_func_thunk (int revents, void *arg)
    {
      (*cb)
        ();
    }

    void feed_fd_event (int fd, int revents) throw ()
    {
      ev_feed_fd_event (EV_AX_ fd, revents);
    }

    void feed_signal_event (int signum) throw ()
    {
      ev_feed_signal_event (EV_AX_ signum);
    }

#if EV_MULTIPLICITY
    struct ev_loop* EV_AX;
#endif

  };

#if EV_MULTIPLICITY
  struct dynamic_loop : loop_ref
  {

    dynamic_loop (unsigned int flags = AUTO) throw (bad_loop)
    : loop_ref (ev_loop_new (flags))
    {
      if (!EV_AX)
        throw bad_loop ();
    }

    ~dynamic_loop () throw ()
    {
      ev_loop_destroy (EV_AX);
      EV_AX = 0;
    }

  private:

    dynamic_loop (const dynamic_loop &);

    dynamic_loop & operator= (const dynamic_loop &);

  };
#endif

  struct default_loop : loop_ref
  {
    default_loop (unsigned int flags = AUTO) throw (bad_loop)
#if EV_MULTIPLICITY
    : loop_ref (ev_default_loop (flags))
#endif
    {
      if (
#if EV_MULTIPLICITY
          !EV_AX
#else
          !ev_default_loop (flags)
#endif
      )
        throw bad_loop ();
    }

    ~default_loop () throw ()
    {
      ev_default_destroy ();
    }

  private:
    default_loop (const default_loop &);
    default_loop &operator = (const default_loop &);
  };

  inline loop_ref get_default_loop () throw ()
  {
#if EV_MULTIPLICITY
    return ev_default_loop (0);
#else
    return loop_ref ();
#endif
  }

#undef EV_AX
#undef EV_AX_

#undef EV_PX
#undef EV_PX_
#if EV_MULTIPLICITY
#  define EV_PX  loop_ref EV_A
#  define EV_PX_ loop_ref EV_A_
#else
#  define EV_PX
#  define EV_PX_
#endif

  template<class ev_watcher, class watcher>
  struct base : ev_watcher
  {
    #if EV_MULTIPLICITY
      EV_PX;

      // loop set
      void set (EV_P) throw ()
      {
        this->EV_A = EV_A;
      }
    #endif

    base (EV_PX) throw ()
    #if EV_MULTIPLICITY
      : EV_A (EV_A)
    #endif
    {
      ev_init (this, 0);
    }

    void set_ (const void *data, void (*cb)(EV_P_ ev_watcher *w, int revents)) throw ()
    {
      this->data = (void *)data;
      ev_set_cb (static_cast<ev_watcher *>(this), cb);
    }

    // function callback
    template<void (*function)(watcher &w, int)>
    void set (void *data = 0) throw ()
    {
      set_ (data, function_thunk<function>);
    }

    template<void (*function)(watcher &w, int)>
    static void function_thunk (EV_P_ ev_watcher *w, int revents)
    {
      function
        (*static_cast<watcher *>(w), revents);
    }

    // method callback
    template<class K, void (K::*method)(watcher &w, int)>
    void set (K *object) throw ()
    {
      set_ (object, method_thunk<K, method>);
    }

    // default method == operator ()
    template<class K>
    void set (K *object) throw ()
    {
      set_ (object, method_thunk<K, &K::operator ()>);
    }

    template<class K, void (K::*method)(watcher &w, int)>
    static void method_thunk (EV_P_ ev_watcher *w, int revents)
    {
      (static_cast<K *>(w->data)->*method)
        (*static_cast<watcher *>(w), revents);
    }

    // no-argument callback
    template<class K, void (K::*method)()>
    void set (K *object) throw ()
    {
      set_ (object, method_noargs_thunk<K, method>);
    }

    template<class K, void (K::*method)()>
    static void method_noargs_thunk (EV_P_ ev_watcher *w, int revents)
    {
      (static_cast<K *>(w->data)->*method)
        ();
    }

    void operator ()(int events = EV_UNDEF)
    {
      return
        ev_cb (static_cast<ev_watcher *>(this))
          (static_cast<ev_watcher *>(this), events);
    }

    bool is_active () const throw ()
    {
      return ev_is_active (static_cast<const ev_watcher *>(this));
    }

    bool is_pending () const throw ()
    {
      return ev_is_pending (static_cast<const ev_watcher *>(this));
    }

    void feed_event (int revents) throw ()
    {
      ev_feed_event (EV_A_ static_cast<const ev_watcher *>(this), revents);
    }
  };

  inline tstamp now () throw ()
  {
    return ev_time ();
  }

  inline void delay (tstamp interval) throw ()
  {
    ev_sleep (interval);
  }

  inline int version_major () throw ()
  {
    return ev_version_major ();
  }

  inline int version_minor () throw ()
  {
    return ev_version_minor ();
  }

  inline unsigned int supported_backends () throw ()
  {
    return ev_supported_backends ();
  }

  inline unsigned int recommended_backends () throw ()
  {
    return ev_recommended_backends ();
  }

  inline unsigned int embeddable_backends () throw ()
  {
    return ev_embeddable_backends ();
  }

  inline void set_allocator (void *(*cb)(void *ptr, long size)) throw ()
  {
    ev_set_allocator (cb);
  }

  inline void set_syserr_cb (void (*cb)(const char *msg)) throw ()
  {
    ev_set_syserr_cb (cb);
  }

  #if EV_MULTIPLICITY
    #define EV_CONSTRUCT(cppstem,cstem)                                                 \
      (EV_PX = get_default_loop ()) throw ()                                            \
        : base<ev_ ## cstem, cppstem> (EV_A)                                            \
      {                                                                                 \
      }
  #else
    #define EV_CONSTRUCT(cppstem,cstem)                                                 \
      () throw ()                                                                       \
      {                                                                                 \
      }
  #endif

  /* using a template here would require quite a bit more lines,
   * so a macro solution was chosen */
  #define EV_BEGIN_WATCHER(cppstem,cstem)                                               \
                                                                                        \
  struct cppstem : base<ev_ ## cstem, cppstem>                                          \
  {                                                                                     \
    void start () throw ()                                                              \
    {                                                                                   \
      ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this));                 \
    }                                                                                   \
                                                                                        \
    void stop () throw ()                                                               \
    {                                                                                   \
      ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this));                  \
    }                                                                                   \
                                                                                        \
    cppstem EV_CONSTRUCT(cppstem,cstem)                                                 \
                                                                                        \
    ~cppstem () throw ()                                                                \
    {                                                                                   \
      stop ();                                                                          \
    }                                                                                   \
                                                                                        \
    using base<ev_ ## cstem, cppstem>::set;                                             \
                                                                                        \
  private:                                                                              \
                                                                                        \
    cppstem (const cppstem &o);                                                         \
                                                                                        \
    cppstem &operator =(const cppstem &o);                                              \
                                                                                        \
  public:

  #define EV_END_WATCHER(cppstem,cstem)                                                 \
  };

  EV_BEGIN_WATCHER (io, io)
    void set (int fd, int events) throw ()
    {
      int active = is_active ();
      if (active) stop ();
      ev_io_set (static_cast<ev_io *>(this), fd, events);
      if (active) start ();
    }

    void set (int events) throw ()
    {
      int active = is_active ();
      if (active) stop ();
      ev_io_set (static_cast<ev_io *>(this), fd, events);
      if (active) start ();
    }

    void start (int fd, int events) throw ()
    {
      set (fd, events);
      start ();
    }
  EV_END_WATCHER (io, io)

  EV_BEGIN_WATCHER (timer, timer)
    void set (ev_tstamp after, ev_tstamp repeat = 0.) throw ()
    {
      int active = is_active ();
      if (active) stop ();
      ev_timer_set (static_cast<ev_timer *>(this), after, repeat);
      if (active) start ();
    }

    void start (ev_tstamp after, ev_tstamp repeat = 0.) throw ()
    {
      set (after, repeat);
      start ();
    }

    void again () throw ()
    {
      ev_timer_again (EV_A_ static_cast<ev_timer *>(this));
    }

    ev_tstamp remaining ()
    {
      return ev_timer_remaining (EV_A_ static_cast<ev_timer *>(this));
    }
  EV_END_WATCHER (timer, timer)

  #if EV_PERIODIC_ENABLE
  EV_BEGIN_WATCHER (periodic, periodic)
    void set (ev_tstamp at, ev_tstamp interval = 0.) throw ()
    {
      int active = is_active ();
      if (active) stop ();
      ev_periodic_set (static_cast<ev_periodic *>(this), at, interval, 0);
      if (active) start ();
    }

    void start (ev_tstamp at, ev_tstamp interval = 0.) throw ()
    {
      set (at, interval);
      start ();
    }

    void again () throw ()
    {
      ev_periodic_again (EV_A_ static_cast<ev_periodic *>(this));
    }
  EV_END_WATCHER (periodic, periodic)
  #endif

  #if EV_SIGNAL_ENABLE
  EV_BEGIN_WATCHER (sig, signal)
    void set (int signum) throw ()
    {
      int active = is_active ();
      if (active) stop ();
      ev_signal_set (static_cast<ev_signal *>(this), signum);
      if (active) start ();
    }

    void start (int signum) throw ()
    {
      set (signum);
      start ();
    }
  EV_END_WATCHER (sig, signal)
  #endif

  #if EV_CHILD_ENABLE
  EV_BEGIN_WATCHER (child, child)
    void set (int pid, int trace = 0) throw ()
    {
      int active = is_active ();
      if (active) stop ();
      ev_child_set (static_cast<ev_child *>(this), pid, trace);
      if (active) start ();
    }

    void start (int pid, int trace = 0) throw ()
    {
      set (pid, trace);
      start ();
    }
  EV_END_WATCHER (child, child)
  #endif

  #if EV_STAT_ENABLE
  EV_BEGIN_WATCHER (stat, stat)
    void set (const char *path, ev_tstamp interval = 0.) throw ()
    {
      int active = is_active ();
      if (active) stop ();
      ev_stat_set (static_cast<ev_stat *>(this), path, interval);
      if (active) start ();
    }

    void start (const char *path, ev_tstamp interval = 0.) throw ()
    {
      stop ();
      set (path, interval);
      start ();
    }

    void update () throw ()
    {
      ev_stat_stat (EV_A_ static_cast<ev_stat *>(this));
    }
  EV_END_WATCHER (stat, stat)
  #endif

  #if EV_IDLE_ENABLE
  EV_BEGIN_WATCHER (idle, idle)
    void set () throw () { }
  EV_END_WATCHER (idle, idle)
  #endif

  #if EV_PREPARE_ENABLE
  EV_BEGIN_WATCHER (prepare, prepare)
    void set () throw () { }
  EV_END_WATCHER (prepare, prepare)
  #endif

  #if EV_CHECK_ENABLE
  EV_BEGIN_WATCHER (check, check)
    void set () throw () { }
  EV_END_WATCHER (check, check)
  #endif

  #if EV_EMBED_ENABLE
  EV_BEGIN_WATCHER (embed, embed)
    void set (struct ev_loop *embedded_loop) throw ()
    {
      int active = is_active ();
      if (active) stop ();
      ev_embed_set (static_cast<ev_embed *>(this), embedded_loop);
      if (active) start ();
    }

    void start (struct ev_loop *embedded_loop) throw ()
    {
      set (embedded_loop);
      start ();
    }

    void sweep ()
    {
      ev_embed_sweep (EV_A_ static_cast<ev_embed *>(this));
    }
  EV_END_WATCHER (embed, embed)
  #endif

  #if EV_FORK_ENABLE
  EV_BEGIN_WATCHER (fork, fork)
    void set () throw () { }
  EV_END_WATCHER (fork, fork)
  #endif

  #if EV_ASYNC_ENABLE
  EV_BEGIN_WATCHER (async, async)
    void send () throw ()
    {
      ev_async_send (EV_A_ static_cast<ev_async *>(this));
    }

    bool async_pending () throw ()
    {
      return ev_async_pending (static_cast<ev_async *>(this));
    }
  EV_END_WATCHER (async, async)
  #endif

  #undef EV_PX
  #undef EV_PX_
  #undef EV_CONSTRUCT
  #undef EV_BEGIN_WATCHER
  #undef EV_END_WATCHER
}

#endif

Revision:	1.53
Committed:	Thu Oct 21 14:50:58 2010 UTC (13 years, 6 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.52:	+1 -1 lines
Log Message:	enum
#	User	Rev	Content
1	root	1.21	/*
2			* libev simple C++ wrapper classes
3			*
4	root	1.48	* Copyright (c) 2007,2008,2010 Marc Alexander Lehmann <libev@schmorp.de>
5	root	1.21	* All rights reserved.
6			*
7			* Redistribution and use in source and binary forms, with or without modifica-
8			* tion, are permitted provided that the following conditions are met:
9			*
10			* 1. Redistributions of source code must retain the above copyright notice,
11			* this list of conditions and the following disclaimer.
12			*
13			* 2. Redistributions in binary form must reproduce the above copyright
14			* notice, this list of conditions and the following disclaimer in the
15			* documentation and/or other materials provided with the distribution.
16			*
17			* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18			* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19			* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20			* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21			* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22			* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23			* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24			* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25			* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26			* OF THE POSSIBILITY OF SUCH DAMAGE.
27			*
28			* Alternatively, the contents of this file may be used under the terms of
29			* the GNU General Public License ("GPL") version 2 or any later version,
30			* in which case the provisions of the GPL are applicable instead of
31			* the above. If you wish to allow the use of your version of this file
32			* only under the terms of the GPL and not to allow others to use your
33			* version of this file under the BSD license, indicate your decision
34			* by deleting the provisions above and replace them with the notice
35			* and other provisions required by the GPL. If you do not delete the
36			* provisions above, a recipient may use your version of this file under
37			* either the BSD or the GPL.
38			*/
39
40	root	1.1	#ifndef EVPP_H__
41			#define EVPP_H__
42
43	root	1.20	#ifdef EV_H
44			# include EV_H
45			#else
46	root	1.22	# include "ev.h"
47	root	1.20	#endif
48	root	1.1
49	root	1.32	#ifndef EV_USE_STDEXCEPT
50			# define EV_USE_STDEXCEPT 1
51	llucax	1.30	#endif
52
53	root	1.32	#if EV_USE_STDEXCEPT
54			# include <stdexcept>
55	llucax	1.30	#endif
56
57	root	1.1	namespace ev {
58
59	llucax	1.24	typedef ev_tstamp tstamp;
60
61	root	1.43	enum
62			{
63	llucax	1.24	UNDEF = EV_UNDEF,
64			NONE = EV_NONE,
65			READ = EV_READ,
66			WRITE = EV_WRITE,
67			TIMEOUT = EV_TIMEOUT,
68			PERIODIC = EV_PERIODIC,
69			SIGNAL = EV_SIGNAL,
70			CHILD = EV_CHILD,
71			STAT = EV_STAT,
72			IDLE = EV_IDLE,
73			CHECK = EV_CHECK,
74			PREPARE = EV_PREPARE,
75			FORK = EV_FORK,
76	root	1.39	ASYNC = EV_ASYNC,
77	llucax	1.24	EMBED = EV_EMBED,
78	root	1.42	# undef ERROR // some systems stupidly #define ERROR
79	root	1.53	ERROR = EV_ERROR
80	llucax	1.24	};
81
82	llucax	1.25	enum
83			{
84	root	1.41	AUTO = EVFLAG_AUTO,
85			NOENV = EVFLAG_NOENV,
86	llucax	1.25	FORKCHECK = EVFLAG_FORKCHECK,
87	root	1.41
88			SELECT = EVBACKEND_SELECT,
89			POLL = EVBACKEND_POLL,
90			EPOLL = EVBACKEND_EPOLL,
91			KQUEUE = EVBACKEND_KQUEUE,
92			DEVPOLL = EVBACKEND_DEVPOLL,
93			PORT = EVBACKEND_PORT
94	llucax	1.25	};
95
96			enum
97			{
98			NONBLOCK = EVLOOP_NONBLOCK,
99	root	1.41	ONESHOT = EVLOOP_ONESHOT
100	llucax	1.25	};
101
102			enum how_t
103			{
104			ONE = EVUNLOOP_ONE,
105			ALL = EVUNLOOP_ALL
106			};
107
108	root	1.32	struct bad_loop
109			#if EV_USE_STDEXCEPT
110			: std::runtime_error
111			#endif
112	llucax	1.30	{
113	root	1.32	#if EV_USE_STDEXCEPT
114	root	1.31	bad_loop ()
115	root	1.32	: std::runtime_error ("libev event loop cannot be initialized, bad value of LIBEV_FLAGS?")
116	root	1.31	{
117			}
118	root	1.32	#endif
119	llucax	1.30	};
120
121	llucax	1.28	#ifdef EV_AX
122			# undef EV_AX
123			#endif
124
125			#ifdef EV_AX_
126			# undef EV_AX_
127			#endif
128
129			#if EV_MULTIPLICITY
130			# define EV_AX raw_loop
131			# define EV_AX_ raw_loop,
132			#else
133			# define EV_AX
134			# define EV_AX_
135			#endif
136
137			struct loop_ref
138			{
139	root	1.36	loop_ref (EV_P) throw ()
140	llucax	1.28	#if EV_MULTIPLICITY
141	root	1.36	: EV_AX (EV_A)
142			#endif
143	llucax	1.33	{
144			}
145	llucax	1.28
146	root	1.32	bool operator == (const loop_ref &other) const throw ()
147	llucax	1.28	{
148			#if EV_MULTIPLICITY
149	root	1.32	return EV_AX == other.EV_AX;
150	llucax	1.28	#else
151			return true;
152			#endif
153			}
154
155	root	1.32	bool operator != (const loop_ref &other) const throw ()
156	llucax	1.28	{
157			#if EV_MULTIPLICITY
158			return ! (*this == other);
159			#else
160			return false;
161			#endif
162			}
163
164			#if EV_MULTIPLICITY
165	root	1.44	bool operator == (const EV_P) const throw ()
166	llucax	1.28	{
167	root	1.44	return this->EV_AX == EV_A;
168	llucax	1.28	}
169
170	root	1.44	bool operator != (const EV_P) const throw ()
171	llucax	1.28	{
172	root	1.44	return (*this == EV_A);
173	llucax	1.28	}
174
175	root	1.31	operator struct ev_loop * () const throw ()
176	llucax	1.28	{
177			return EV_AX;
178			}
179
180	root	1.31	operator const struct ev_loop * () const throw ()
181	llucax	1.28	{
182			return EV_AX;
183			}
184
185	root	1.31	bool is_default () const throw ()
186	llucax	1.28	{
187			return EV_AX == ev_default_loop (0);
188			}
189			#endif
190
191			void loop (int flags = 0)
192			{
193			ev_loop (EV_AX_ flags);
194			}
195
196	root	1.31	void unloop (how_t how = ONE) throw ()
197	llucax	1.28	{
198			ev_unloop (EV_AX_ how);
199			}
200
201	root	1.31	void post_fork () throw ()
202	llucax	1.28	{
203			#if EV_MULTIPLICITY
204			ev_loop_fork (EV_AX);
205			#else
206			ev_default_fork ();
207			#endif
208			}
209
210	root	1.31	unsigned int backend () const throw ()
211	llucax	1.28	{
212			return ev_backend (EV_AX);
213			}
214
215	root	1.31	tstamp now () const throw ()
216	llucax	1.28	{
217			return ev_now (EV_AX);
218			}
219
220	root	1.31	void ref () throw ()
221	llucax	1.28	{
222			ev_ref (EV_AX);
223			}
224
225	root	1.31	void unref () throw ()
226	llucax	1.28	{
227			ev_unref (EV_AX);
228			}
229
230	root	1.49	#if EV_FEATURE_API
231	root	1.51	unsigned int iteration () const throw ()
232	root	1.45	{
233	root	1.51	return ev_iteration (EV_AX);
234	root	1.45	}
235
236			unsigned int depth () const throw ()
237			{
238	root	1.51	return ev_depth (EV_AX);
239	root	1.45	}
240
241	root	1.31	void set_io_collect_interval (tstamp interval) throw ()
242	llucax	1.28	{
243			ev_set_io_collect_interval (EV_AX_ interval);
244			}
245
246	root	1.31	void set_timeout_collect_interval (tstamp interval) throw ()
247	llucax	1.28	{
248			ev_set_timeout_collect_interval (EV_AX_ interval);
249			}
250	root	1.45	#endif
251	llucax	1.28
252			// function callback
253	root	1.44	void once (int fd, int events, tstamp timeout, void (cb)(int, void ), void *arg = 0) throw ()
254	llucax	1.28	{
255			ev_once (EV_AX_ fd, events, timeout, cb, arg);
256			}
257
258			// method callback
259			template<class K, void (K::*method)(int)>
260	root	1.31	void once (int fd, int events, tstamp timeout, K *object) throw ()
261	llucax	1.28	{
262			once (fd, events, timeout, method_thunk<K, method>, object);
263			}
264
265	root	1.44	// default method == operator ()
266			template<class K>
267			void once (int fd, int events, tstamp timeout, K *object) throw ()
268	llucax	1.28	{
269	root	1.44	once (fd, events, timeout, method_thunk<K, &K::operator ()>, object);
270	llucax	1.28	}
271
272	root	1.44	template<class K, void (K::*method)(int)>
273			static void method_thunk (int revents, void *arg)
274	llucax	1.28	{
275	root	1.44	static_cast<K >(arg)->method
276			(revents);
277	llucax	1.28	}
278
279	root	1.44	// no-argument method callback
280	llucax	1.28	template<class K, void (K::*method)()>
281	root	1.31	void once (int fd, int events, tstamp timeout, K *object) throw ()
282	llucax	1.28	{
283			once (fd, events, timeout, method_noargs_thunk<K, method>, object);
284			}
285
286			template<class K, void (K::*method)()>
287	root	1.44	static void method_noargs_thunk (int revents, void *arg)
288	llucax	1.28	{
289	root	1.44	static_cast<K >(arg)->method
290			();
291	llucax	1.28	}
292
293			// simpler function callback
294			template<void (*cb)(int)>
295	root	1.31	void once (int fd, int events, tstamp timeout) throw ()
296	llucax	1.28	{
297			once (fd, events, timeout, simpler_func_thunk<cb>);
298			}
299
300			template<void (*cb)(int)>
301	root	1.44	static void simpler_func_thunk (int revents, void *arg)
302	llucax	1.28	{
303	root	1.44	(*cb)
304			(revents);
305	llucax	1.28	}
306
307			// simplest function callback
308			template<void (*cb)()>
309	root	1.31	void once (int fd, int events, tstamp timeout) throw ()
310	llucax	1.28	{
311			once (fd, events, timeout, simplest_func_thunk<cb>);
312			}
313
314			template<void (*cb)()>
315	root	1.44	static void simplest_func_thunk (int revents, void *arg)
316	llucax	1.28	{
317	root	1.44	(*cb)
318			();
319	llucax	1.28	}
320
321	root	1.31	void feed_fd_event (int fd, int revents) throw ()
322	llucax	1.28	{
323			ev_feed_fd_event (EV_AX_ fd, revents);
324			}
325
326	root	1.31	void feed_signal_event (int signum) throw ()
327	llucax	1.28	{
328			ev_feed_signal_event (EV_AX_ signum);
329			}
330
331			#if EV_MULTIPLICITY
332			struct ev_loop* EV_AX;
333			#endif
334
335			};
336
337			#if EV_MULTIPLICITY
338	root	1.36	struct dynamic_loop : loop_ref
339	llucax	1.28	{
340
341	llucax	1.34	dynamic_loop (unsigned int flags = AUTO) throw (bad_loop)
342	root	1.36	: loop_ref (ev_loop_new (flags))
343	llucax	1.28	{
344	root	1.36	if (!EV_AX)
345			throw bad_loop ();
346	llucax	1.28	}
347
348	root	1.31	~dynamic_loop () throw ()
349	llucax	1.28	{
350			ev_loop_destroy (EV_AX);
351			EV_AX = 0;
352			}
353
354			private:
355
356			dynamic_loop (const dynamic_loop &);
357
358			dynamic_loop & operator= (const dynamic_loop &);
359
360			};
361			#endif
362
363	root	1.36	struct default_loop : loop_ref
364	llucax	1.28	{
365	root	1.32	default_loop (unsigned int flags = AUTO) throw (bad_loop)
366	llucax	1.28	#if EV_MULTIPLICITY
367	root	1.32	: loop_ref (ev_default_loop (flags))
368			#endif
369	llucax	1.28	{
370	root	1.36	if (
371			#if EV_MULTIPLICITY
372			!EV_AX
373			#else
374			!ev_default_loop (flags)
375	root	1.32	#endif
376	root	1.36	)
377			throw bad_loop ();
378	llucax	1.28	}
379
380	root	1.31	~default_loop () throw ()
381	llucax	1.28	{
382			ev_default_destroy ();
383			}
384
385			private:
386			default_loop (const default_loop &);
387	root	1.32	default_loop &operator = (const default_loop &);
388	llucax	1.28	};
389
390	root	1.31	inline loop_ref get_default_loop () throw ()
391	llucax	1.28	{
392			#if EV_MULTIPLICITY
393			return ev_default_loop (0);
394			#else
395			return loop_ref ();
396			#endif
397			}
398
399			#undef EV_AX
400			#undef EV_AX_
401
402			#undef EV_PX
403			#undef EV_PX_
404			#if EV_MULTIPLICITY
405			# define EV_PX loop_ref EV_A
406			# define EV_PX_ loop_ref EV_A_
407			#else
408			# define EV_PX
409			# define EV_PX_
410			#endif
411
412	root	1.13	template<class ev_watcher, class watcher>
413			struct base : ev_watcher
414	root	1.1	{
415	root	1.13	#if EV_MULTIPLICITY
416	llucax	1.28	EV_PX;
417	root	1.1
418	root	1.52	// loop set
419	root	1.44	void set (EV_P) throw ()
420	root	1.13	{
421			this->EV_A = EV_A;
422			}
423			#endif
424	root	1.1
425	root	1.31	base (EV_PX) throw ()
426	llucax	1.28	#if EV_MULTIPLICITY
427			: EV_A (EV_A)
428			#endif
429	root	1.13	{
430			ev_init (this, 0);
431			}
432
433	root	1.44	void set_ (const void data, void (cb)(EV_P_ ev_watcher *w, int revents)) throw ()
434	root	1.13	{
435	root	1.44	this->data = (void *)data;
436	root	1.18	ev_set_cb (static_cast<ev_watcher *>(this), cb);
437	root	1.13	}
438
439	root	1.44	// function callback
440			template<void (*function)(watcher &w, int)>
441			void set (void *data = 0) throw ()
442	root	1.13	{
443	root	1.44	set_ (data, function_thunk<function>);
444	root	1.13	}
445
446	root	1.44	template<void (*function)(watcher &w, int)>
447			static void function_thunk (EV_P_ ev_watcher *w, int revents)
448	root	1.13	{
449	root	1.44	function
450			(static_cast<watcher >(w), revents);
451	root	1.13	}
452
453	root	1.44	// method callback
454			template<class K, void (K::*method)(watcher &w, int)>
455			void set (K *object) throw ()
456	root	1.13	{
457	root	1.44	set_ (object, method_thunk<K, method>);
458	root	1.13	}
459
460	root	1.44	// default method == operator ()
461			template<class K>
462			void set (K *object) throw ()
463	root	1.13	{
464	root	1.44	set_ (object, method_thunk<K, &K::operator ()>);
465	root	1.13	}
466
467	root	1.44	template<class K, void (K::*method)(watcher &w, int)>
468			static void method_thunk (EV_P_ ev_watcher *w, int revents)
469	root	1.13	{
470	root	1.44	(static_cast<K >(w->data)->method)
471			(static_cast<watcher >(w), revents);
472	root	1.13	}
473
474	root	1.44	// no-argument callback
475	root	1.19	template<class K, void (K::*method)()>
476	root	1.31	void set (K *object) throw ()
477	root	1.19	{
478			set_ (object, method_noargs_thunk<K, method>);
479			}
480
481			template<class K, void (K::*method)()>
482			static void method_noargs_thunk (EV_P_ ev_watcher *w, int revents)
483			{
484	root	1.50	(static_cast<K >(w->data)->method)
485	root	1.44	();
486	root	1.19	}
487
488	root	1.13	void operator ()(int events = EV_UNDEF)
489			{
490	root	1.44	return
491			ev_cb (static_cast<ev_watcher *>(this))
492			(static_cast<ev_watcher *>(this), events);
493	root	1.13	}
494
495	root	1.31	bool is_active () const throw ()
496	root	1.1	{
497	root	1.13	return ev_is_active (static_cast<const ev_watcher *>(this));
498	root	1.1	}
499
500	root	1.31	bool is_pending () const throw ()
501	root	1.1	{
502	root	1.13	return ev_is_pending (static_cast<const ev_watcher *>(this));
503	root	1.1	}
504	llucax	1.27
505	root	1.31	void feed_event (int revents) throw ()
506	llucax	1.27	{
507			ev_feed_event (EV_A_ static_cast<const ev_watcher *>(this), revents);
508			}
509	root	1.1	};
510
511	root	1.31	inline tstamp now () throw ()
512	llucax	1.29	{
513			return ev_time ();
514			}
515
516	root	1.31	inline void delay (tstamp interval) throw ()
517	llucax	1.26	{
518			ev_sleep (interval);
519			}
520
521	root	1.31	inline int version_major () throw ()
522	llucax	1.26	{
523			return ev_version_major ();
524			}
525
526	root	1.31	inline int version_minor () throw ()
527	llucax	1.26	{
528			return ev_version_minor ();
529			}
530
531	root	1.31	inline unsigned int supported_backends () throw ()
532	llucax	1.26	{
533			return ev_supported_backends ();
534			}
535
536	root	1.31	inline unsigned int recommended_backends () throw ()
537	llucax	1.26	{
538			return ev_recommended_backends ();
539			}
540
541	root	1.31	inline unsigned int embeddable_backends () throw ()
542	llucax	1.26	{
543			return ev_embeddable_backends ();
544			}
545
546	root	1.31	inline void set_allocator (void (cb)(void *ptr, long size)) throw ()
547	llucax	1.26	{
548			ev_set_allocator (cb);
549			}
550
551	root	1.31	inline void set_syserr_cb (void (cb)(const char msg)) throw ()
552	llucax	1.26	{
553			ev_set_syserr_cb (cb);
554			}
555
556	root	1.1	#if EV_MULTIPLICITY
557	llucax	1.28	#define EV_CONSTRUCT(cppstem,cstem) \
558	root	1.39	(EV_PX = get_default_loop ()) throw () \
559	llucax	1.28	: base<ev_ ## cstem, cppstem> (EV_A) \
560	root	1.1	{ \
561	root	1.13	}
562	root	1.1	#else
563	llucax	1.28	#define EV_CONSTRUCT(cppstem,cstem) \
564	root	1.39	() throw () \
565	root	1.13	{ \
566			}
567	root	1.1	#endif
568
569			/* using a template here would require quite a bit more lines,
570			* so a macro solution was chosen */
571	root	1.4	#define EV_BEGIN_WATCHER(cppstem,cstem) \
572	root	1.1	\
573	root	1.13	struct cppstem : base<ev_ ## cstem, cppstem> \
574	root	1.1	{ \
575	root	1.39	void start () throw () \
576	root	1.1	{ \
577			ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this)); \
578			} \
579			\
580	root	1.39	void stop () throw () \
581	root	1.1	{ \
582			ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this)); \
583			} \
584			\
585	llucax	1.28	cppstem EV_CONSTRUCT(cppstem,cstem) \
586	root	1.1	\
587	root	1.39	~cppstem () throw () \
588	root	1.3	{ \
589			stop (); \
590			} \
591			\
592	root	1.13	using base<ev_ ## cstem, cppstem>::set; \
593			\
594	root	1.1	private: \
595			\
596	llucax	1.23	cppstem (const cppstem &o); \
597	root	1.6	\
598	root	1.39	cppstem &operator =(const cppstem &o); \
599	root	1.1	\
600			public:
601
602	root	1.4	#define EV_END_WATCHER(cppstem,cstem) \
603	root	1.6	};
604	root	1.4
605			EV_BEGIN_WATCHER (io, io)
606	root	1.31	void set (int fd, int events) throw ()
607	root	1.1	{
608			int active = is_active ();
609			if (active) stop ();
610			ev_io_set (static_cast<ev_io *>(this), fd, events);
611			if (active) start ();
612			}
613
614	root	1.31	void set (int events) throw ()
615	root	1.1	{
616			int active = is_active ();
617			if (active) stop ();
618			ev_io_set (static_cast<ev_io *>(this), fd, events);
619			if (active) start ();
620			}
621
622	root	1.31	void start (int fd, int events) throw ()
623	root	1.1	{
624			set (fd, events);
625			start ();
626			}
627	root	1.4	EV_END_WATCHER (io, io)
628	root	1.1
629	root	1.4	EV_BEGIN_WATCHER (timer, timer)
630	root	1.31	void set (ev_tstamp after, ev_tstamp repeat = 0.) throw ()
631	root	1.1	{
632			int active = is_active ();
633			if (active) stop ();
634			ev_timer_set (static_cast<ev_timer *>(this), after, repeat);
635			if (active) start ();
636			}
637
638	root	1.31	void start (ev_tstamp after, ev_tstamp repeat = 0.) throw ()
639	root	1.1	{
640			set (after, repeat);
641			start ();
642			}
643
644	root	1.31	void again () throw ()
645	root	1.1	{
646			ev_timer_again (EV_A_ static_cast<ev_timer *>(this));
647			}
648	root	1.47
649			ev_tstamp remaining ()
650			{
651			return ev_timer_remaining (EV_A_ static_cast<ev_timer *>(this));
652			}
653	root	1.4	EV_END_WATCHER (timer, timer)
654	root	1.1
655	root	1.8	#if EV_PERIODIC_ENABLE
656	root	1.4	EV_BEGIN_WATCHER (periodic, periodic)
657	root	1.31	void set (ev_tstamp at, ev_tstamp interval = 0.) throw ()
658	root	1.1	{
659			int active = is_active ();
660			if (active) stop ();
661			ev_periodic_set (static_cast<ev_periodic *>(this), at, interval, 0);
662			if (active) start ();
663			}
664
665	root	1.31	void start (ev_tstamp at, ev_tstamp interval = 0.) throw ()
666	root	1.1	{
667			set (at, interval);
668			start ();
669			}
670
671	root	1.31	void again () throw ()
672	root	1.1	{
673			ev_periodic_again (EV_A_ static_cast<ev_periodic *>(this));
674			}
675	root	1.4	EV_END_WATCHER (periodic, periodic)
676	root	1.3	#endif
677	root	1.1
678	root	1.48	#if EV_SIGNAL_ENABLE
679	root	1.4	EV_BEGIN_WATCHER (sig, signal)
680	root	1.31	void set (int signum) throw ()
681	root	1.1	{
682			int active = is_active ();
683			if (active) stop ();
684			ev_signal_set (static_cast<ev_signal *>(this), signum);
685			if (active) start ();
686			}
687
688	root	1.31	void start (int signum) throw ()
689	root	1.1	{
690			set (signum);
691			start ();
692			}
693	root	1.4	EV_END_WATCHER (sig, signal)
694	root	1.48	#endif
695	root	1.1
696	root	1.48	#if EV_CHILD_ENABLE
697	root	1.4	EV_BEGIN_WATCHER (child, child)
698	root	1.37	void set (int pid, int trace = 0) throw ()
699	root	1.1	{
700			int active = is_active ();
701			if (active) stop ();
702	root	1.37	ev_child_set (static_cast<ev_child *>(this), pid, trace);
703	root	1.1	if (active) start ();
704			}
705
706	root	1.37	void start (int pid, int trace = 0) throw ()
707	root	1.1	{
708	root	1.37	set (pid, trace);
709	root	1.1	start ();
710			}
711	root	1.4	EV_END_WATCHER (child, child)
712	root	1.48	#endif
713	root	1.1
714	root	1.8	#if EV_STAT_ENABLE
715			EV_BEGIN_WATCHER (stat, stat)
716	root	1.31	void set (const char *path, ev_tstamp interval = 0.) throw ()
717	root	1.8	{
718			int active = is_active ();
719			if (active) stop ();
720			ev_stat_set (static_cast<ev_stat *>(this), path, interval);
721			if (active) start ();
722			}
723
724	root	1.31	void start (const char *path, ev_tstamp interval = 0.) throw ()
725	root	1.8	{
726	root	1.12	stop ();
727	root	1.8	set (path, interval);
728			start ();
729			}
730
731	root	1.31	void update () throw ()
732	root	1.8	{
733			ev_stat_stat (EV_A_ static_cast<ev_stat *>(this));
734			}
735			EV_END_WATCHER (stat, stat)
736			#endif
737
738	root	1.48	#if EV_IDLE_ENABLE
739	root	1.8	EV_BEGIN_WATCHER (idle, idle)
740	root	1.31	void set () throw () { }
741	root	1.8	EV_END_WATCHER (idle, idle)
742	root	1.48	#endif
743	root	1.7
744	root	1.48	#if EV_PREPARE_ENABLE
745	root	1.8	EV_BEGIN_WATCHER (prepare, prepare)
746	root	1.31	void set () throw () { }
747	root	1.8	EV_END_WATCHER (prepare, prepare)
748	root	1.48	#endif
749	root	1.8
750	root	1.48	#if EV_CHECK_ENABLE
751	root	1.8	EV_BEGIN_WATCHER (check, check)
752	root	1.31	void set () throw () { }
753	root	1.8	EV_END_WATCHER (check, check)
754	root	1.48	#endif
755	root	1.8
756			#if EV_EMBED_ENABLE
757	root	1.7	EV_BEGIN_WATCHER (embed, embed)
758	root	1.39	void set (struct ev_loop *embedded_loop) throw ()
759			{
760			int active = is_active ();
761			if (active) stop ();
762			ev_embed_set (static_cast<ev_embed *>(this), embedded_loop);
763			if (active) start ();
764			}
765
766	root	1.31	void start (struct ev_loop *embedded_loop) throw ()
767	root	1.7	{
768	root	1.39	set (embedded_loop);
769	root	1.7	start ();
770			}
771
772			void sweep ()
773			{
774			ev_embed_sweep (EV_A_ static_cast<ev_embed *>(this));
775			}
776			EV_END_WATCHER (embed, embed)
777			#endif
778
779	root	1.10	#if EV_FORK_ENABLE
780			EV_BEGIN_WATCHER (fork, fork)
781	root	1.31	void set () throw () { }
782	root	1.10	EV_END_WATCHER (fork, fork)
783			#endif
784
785	root	1.39	#if EV_ASYNC_ENABLE
786			EV_BEGIN_WATCHER (async, async)
787			void send () throw ()
788			{
789			ev_async_send (EV_A_ static_cast<ev_async *>(this));
790			}
791
792			bool async_pending () throw ()
793			{
794			return ev_async_pending (static_cast<ev_async *>(this));
795			}
796			EV_END_WATCHER (async, async)
797			#endif
798
799	llucax	1.28	#undef EV_PX
800			#undef EV_PX_
801	root	1.1	#undef EV_CONSTRUCT
802	root	1.4	#undef EV_BEGIN_WATCHER
803	root	1.7	#undef EV_END_WATCHER
804	root	1.1	}
805
806			#endif
807