libev/ev%2B%2B.h

/*
 * libev simple C++ wrapper classes
 *
 * Copyright (c) 2007 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

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,
    EMBED    = EV_EMBED,
    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
  };

#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)
#if EV_MULTIPLICITY
      : EV_AX (EV_A)
#endif
    {
    }

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

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

#if EV_MULTIPLICITY
    bool operator== (struct ev_loop *other) const
    {
      return this->EV_AX == other;
    }

    bool operator!= (struct ev_loop *other) const
    {
      return ! (*this == other);
    }

    bool operator== (const struct ev_loop *other) const
    {
      return this->EV_AX == other;
    }

    bool operator!= (const struct ev_loop *other) const
    {
      return (*this == other);
    }

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

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

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

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

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

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

    unsigned int count () const
    {
      return ev_loop_count (EV_AX);
    }

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

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

    void ref ()
    {
      ev_ref (EV_AX);
    }

    void unref ()
    {
      ev_unref (EV_AX);
    }

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

    void set_timeout_collect_interval (tstamp interval)
    {
      ev_set_timeout_collect_interval (EV_AX_ interval);
    }

    // function callback
    void once (int fd, int events, tstamp timeout, void (*cb)(int, void *), void* arg = 0)
    {
      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)
    {
      once (fd, events, timeout, method_thunk<K, method>, object);
    }

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

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

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

    // simple method callback
    template<class K, void (K::*method)()>
    void once (int fd, int events, tstamp timeout, K *object)
    {
      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)
    {
      K *obj = static_cast<K *>(arg);
      (obj->*method) ();
    }

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

    void feed_signal_event (int signum)
    {
      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)
      : loop_ref (ev_loop_new (flags))
    {
    }

    ~dynamic_loop ()
    {
      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)
#if EV_MULTIPLICITY
      : loop_ref (ev_default_loop (flags))
    {
    }
#else
    {
      ev_default_loop (flags);
    }
#endif

    ~default_loop ()
    {
      ev_default_destroy ();
#if EV_MULTIPLICITY
      EV_AX = 0;
#endif
    }

  private:

    default_loop (const default_loop &);

    default_loop & operator= (const default_loop &);

  };

  inline loop_ref get_default_loop ()
  {
#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;

      void set (EV_PX)
      {
        this->EV_A = EV_A;
      }
    #endif

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

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

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

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

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

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

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

    // simple callback
    template<class K, void (K::*method)()>
    void set (K *object)
    {
      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)
    {
      K *obj = static_cast<K *>(w->data);
      (obj->*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
    {
      return ev_is_active (static_cast<const ev_watcher *>(this));
    }

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

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

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

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

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

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

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

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

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

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

  #if EV_MULTIPLICITY
    #define EV_CONSTRUCT(cppstem,cstem)                                                 \
      (EV_PX = get_default_loop ())                                                     \
        : base<ev_ ## cstem, cppstem> (EV_A)                                            \
      {                                                                                 \
      }
  #else
    #define EV_CONSTRUCT(cppstem,cstem)                                                 \
      ()                                                                                \
      {                                                                                 \
      }
  #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 ()                                                                       \
    {                                                                                   \
      ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this));                 \
    }                                                                                   \
                                                                                        \
    void stop ()                                                                        \
    {                                                                                   \
      ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this));                  \
    }                                                                                   \
                                                                                        \
    cppstem EV_CONSTRUCT(cppstem,cstem)                                                 \
                                                                                        \
    ~cppstem ()                                                                         \
    {                                                                                   \
      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)
    {
      int active = is_active ();
      if (active) stop ();
      ev_io_set (static_cast<ev_io *>(this), fd, events);
      if (active) start ();
    }

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

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

    void again ()
    {
      ev_timer_again (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.)
    {
      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.)
    {
      set (at, interval);
      start ();
    }

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

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

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

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

    void start (int pid)
    {
      set (pid);
      start ();
    }
  EV_END_WATCHER (child, child)

  #if EV_STAT_ENABLE
  EV_BEGIN_WATCHER (stat, stat)
    void set (const char *path, ev_tstamp interval = 0.)
    {
      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.)
    {
      stop ();
      set (path, interval);
      start ();
    }

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

  EV_BEGIN_WATCHER (idle, idle)
    void set () { }
  EV_END_WATCHER (idle, idle)

  EV_BEGIN_WATCHER (prepare, prepare)
    void set () { }
  EV_END_WATCHER (prepare, prepare)

  EV_BEGIN_WATCHER (check, check)
    void set () { }
  EV_END_WATCHER (check, check)

  #if EV_EMBED_ENABLE
  EV_BEGIN_WATCHER (embed, embed)
    void start (struct ev_loop *embedded_loop)
    {
      stop ();
      ev_embed_set (static_cast<ev_embed *>(this), 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 () { }
  EV_END_WATCHER (fork, fork)
  #endif

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

}

#endif

Revision:	1.28
Committed:	Fri Jan 18 18:14:41 2008 UTC (16 years, 3 months ago) by llucax
Content type:	text/plain
Branch:	MAIN
Changes since 1.27:	+315 -14 lines
Log Message:	Add loop wrappers to C++ interface. 3 new classes are provided: loop_ref, dynamic_loop and default_loop. loop_ref has value semantics and is just a pointer wrapper (but with reference syntax). You can change a ev_loop* for a loop_ref and vice-versa without notice. You can create (or asign) a loop_ref from a ev_loop* and you can cast a loop_ref to a ev_loop*. You can check for equality between loop_refs and ev_loop pointers. No clean-up is done by a loop_ref. dynamic_loop and default_loop have both reference semantics (they are non-copiable and non-assignable), and provide automatic destruction.
#	User	Rev	Content
1	root	1.21	/*
2			* libev simple C++ wrapper classes
3			*
4			* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
5			* 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			namespace ev {
50
51	llucax	1.24	typedef ev_tstamp tstamp;
52
53			enum {
54			UNDEF = EV_UNDEF,
55			NONE = EV_NONE,
56			READ = EV_READ,
57			WRITE = EV_WRITE,
58			TIMEOUT = EV_TIMEOUT,
59			PERIODIC = EV_PERIODIC,
60			SIGNAL = EV_SIGNAL,
61			CHILD = EV_CHILD,
62			STAT = EV_STAT,
63			IDLE = EV_IDLE,
64			CHECK = EV_CHECK,
65			PREPARE = EV_PREPARE,
66			FORK = EV_FORK,
67			EMBED = EV_EMBED,
68			ERROR = EV_ERROR,
69			};
70
71	llucax	1.25	enum
72			{
73			AUTO = EVFLAG_AUTO,
74			NOENV = EVFLAG_NOENV,
75			FORKCHECK = EVFLAG_FORKCHECK,
76			SELECT = EVBACKEND_SELECT,
77			POLL = EVBACKEND_POLL,
78			EPOLL = EVBACKEND_EPOLL,
79			KQUEUE = EVBACKEND_KQUEUE,
80			DEVPOLL = EVBACKEND_DEVPOLL,
81			PORT = EVBACKEND_PORT
82			};
83
84			enum
85			{
86			NONBLOCK = EVLOOP_NONBLOCK,
87			ONESHOT = EVLOOP_ONESHOT
88			};
89
90			enum how_t
91			{
92			ONE = EVUNLOOP_ONE,
93			ALL = EVUNLOOP_ALL
94			};
95
96	llucax	1.28	#ifdef EV_AX
97			# undef EV_AX
98			#endif
99
100			#ifdef EV_AX_
101			# undef EV_AX_
102			#endif
103
104			#if EV_MULTIPLICITY
105			# define EV_AX raw_loop
106			# define EV_AX_ raw_loop,
107			#else
108			# define EV_AX
109			# define EV_AX_
110			#endif
111
112			struct loop_ref
113			{
114
115			loop_ref (EV_P)
116			#if EV_MULTIPLICITY
117			: EV_AX (EV_A)
118			#endif
119			{
120			}
121
122			bool operator== (const loop_ref &other) const
123			{
124			#if EV_MULTIPLICITY
125			return this->EV_AX == other.EV_AX;
126			#else
127			return true;
128			#endif
129			}
130
131			bool operator!= (const loop_ref &other) const
132			{
133			#if EV_MULTIPLICITY
134			return ! (*this == other);
135			#else
136			return false;
137			#endif
138			}
139
140			#if EV_MULTIPLICITY
141			bool operator== (struct ev_loop *other) const
142			{
143			return this->EV_AX == other;
144			}
145
146			bool operator!= (struct ev_loop *other) const
147			{
148			return ! (*this == other);
149			}
150
151			bool operator== (const struct ev_loop *other) const
152			{
153			return this->EV_AX == other;
154			}
155
156			bool operator!= (const struct ev_loop *other) const
157			{
158			return (*this == other);
159			}
160
161			operator struct ev_loop * () const
162			{
163			return EV_AX;
164			}
165
166			operator const struct ev_loop * () const
167			{
168			return EV_AX;
169			}
170
171			bool is_default () const
172			{
173			return EV_AX == ev_default_loop (0);
174			}
175			#endif
176
177			void loop (int flags = 0)
178			{
179			ev_loop (EV_AX_ flags);
180			}
181
182			void unloop (how_t how = ONE)
183			{
184			ev_unloop (EV_AX_ how);
185			}
186
187			void post_fork ()
188			{
189			#if EV_MULTIPLICITY
190			ev_loop_fork (EV_AX);
191			#else
192			ev_default_fork ();
193			#endif
194			}
195
196			unsigned int count () const
197			{
198			return ev_loop_count (EV_AX);
199			}
200
201			unsigned int backend () const
202			{
203			return ev_backend (EV_AX);
204			}
205
206			tstamp now () const
207			{
208			return ev_now (EV_AX);
209			}
210
211			void ref ()
212			{
213			ev_ref (EV_AX);
214			}
215
216			void unref ()
217			{
218			ev_unref (EV_AX);
219			}
220
221			void set_io_collect_interval (tstamp interval)
222			{
223			ev_set_io_collect_interval (EV_AX_ interval);
224			}
225
226			void set_timeout_collect_interval (tstamp interval)
227			{
228			ev_set_timeout_collect_interval (EV_AX_ interval);
229			}
230
231			// function callback
232			void once (int fd, int events, tstamp timeout, void (cb)(int, void ), void* arg = 0)
233			{
234			ev_once (EV_AX_ fd, events, timeout, cb, arg);
235			}
236
237			// method callback
238			template<class K, void (K::*method)(int)>
239			void once (int fd, int events, tstamp timeout, K *object)
240			{
241			once (fd, events, timeout, method_thunk<K, method>, object);
242			}
243
244			template<class K, void (K::*method)(int)>
245			static void method_thunk (int revents, void* arg)
246			{
247			K obj = static_cast<K >(arg);
248			(obj->*method) (revents);
249			}
250
251			// const method callback
252			template<class K, void (K::*method)(int) const>
253			void once (int fd, int events, tstamp timeout, const K *object)
254			{
255			once (fd, events, timeout, const_method_thunk<K, method>, object);
256			}
257
258			template<class K, void (K::*method)(int) const>
259			static void const_method_thunk (int revents, void* arg)
260			{
261			K obj = static_cast<K >(arg);
262			(obj->*method) (revents);
263			}
264
265			// simple method callback
266			template<class K, void (K::*method)()>
267			void once (int fd, int events, tstamp timeout, K *object)
268			{
269			once (fd, events, timeout, method_noargs_thunk<K, method>, object);
270			}
271
272			template<class K, void (K::*method)()>
273			static void method_noargs_thunk (int revents, void* arg)
274			{
275			K obj = static_cast<K >(arg);
276			(obj->*method) ();
277			}
278
279			// simpler function callback
280			template<void (*cb)(int)>
281			void once (int fd, int events, tstamp timeout)
282			{
283			once (fd, events, timeout, simpler_func_thunk<cb>);
284			}
285
286			template<void (*cb)(int)>
287			static void simpler_func_thunk (int revents, void* arg)
288			{
289			(*cb) (revents);
290			}
291
292			// simplest function callback
293			template<void (*cb)()>
294			void once (int fd, int events, tstamp timeout)
295			{
296			once (fd, events, timeout, simplest_func_thunk<cb>);
297			}
298
299			template<void (*cb)()>
300			static void simplest_func_thunk (int revents, void* arg)
301			{
302			(*cb) ();
303			}
304
305			void feed_fd_event (int fd, int revents)
306			{
307			ev_feed_fd_event (EV_AX_ fd, revents);
308			}
309
310			void feed_signal_event (int signum)
311			{
312			ev_feed_signal_event (EV_AX_ signum);
313			}
314
315			#if EV_MULTIPLICITY
316			struct ev_loop* EV_AX;
317			#endif
318
319			};
320
321			#if EV_MULTIPLICITY
322			struct dynamic_loop: loop_ref
323			{
324
325			dynamic_loop (unsigned int flags = AUTO)
326			: loop_ref (ev_loop_new (flags))
327			{
328			}
329
330			~dynamic_loop ()
331			{
332			ev_loop_destroy (EV_AX);
333			EV_AX = 0;
334			}
335
336			private:
337
338			dynamic_loop (const dynamic_loop &);
339
340			dynamic_loop & operator= (const dynamic_loop &);
341
342			};
343			#endif
344
345			struct default_loop: loop_ref
346			{
347
348			default_loop (unsigned int flags = AUTO)
349			#if EV_MULTIPLICITY
350			: loop_ref (ev_default_loop (flags))
351			{
352			}
353			#else
354			{
355			ev_default_loop (flags);
356			}
357			#endif
358
359			~default_loop ()
360			{
361			ev_default_destroy ();
362			#if EV_MULTIPLICITY
363			EV_AX = 0;
364			#endif
365			}
366
367			private:
368
369			default_loop (const default_loop &);
370
371			default_loop & operator= (const default_loop &);
372
373			};
374
375			inline loop_ref get_default_loop ()
376			{
377			#if EV_MULTIPLICITY
378			return ev_default_loop (0);
379			#else
380			return loop_ref ();
381			#endif
382			}
383
384			#undef EV_AX
385			#undef EV_AX_
386
387			#undef EV_PX
388			#undef EV_PX_
389			#if EV_MULTIPLICITY
390			# define EV_PX loop_ref EV_A
391			# define EV_PX_ loop_ref EV_A_
392			#else
393			# define EV_PX
394			# define EV_PX_
395			#endif
396
397	root	1.13	template<class ev_watcher, class watcher>
398			struct base : ev_watcher
399	root	1.1	{
400	root	1.13	#if EV_MULTIPLICITY
401	llucax	1.28	EV_PX;
402	root	1.1
403	llucax	1.28	void set (EV_PX)
404	root	1.13	{
405			this->EV_A = EV_A;
406			}
407			#endif
408	root	1.1
409	llucax	1.28	base (EV_PX)
410			#if EV_MULTIPLICITY
411			: EV_A (EV_A)
412			#endif
413	root	1.13	{
414			ev_init (this, 0);
415			}
416
417	root	1.18	void set_ (void data, void (cb)(EV_P_ ev_watcher *w, int revents))
418	root	1.13	{
419	root	1.17	this->data = data;
420	root	1.18	ev_set_cb (static_cast<ev_watcher *>(this), cb);
421	root	1.13	}
422
423	root	1.19	// method callback
424	root	1.13	template<class K, void (K::*method)(watcher &w, int)>
425			void set (K *object)
426			{
427			set_ (object, method_thunk<K, method>);
428			}
429
430			template<class K, void (K::*method)(watcher &w, int)>
431	root	1.18	static void method_thunk (EV_P_ ev_watcher *w, int revents)
432	root	1.13	{
433	root	1.17	K obj = static_cast<K >(w->data);
434	root	1.18	(obj->method) (static_cast<watcher *>(w), revents);
435	root	1.13	}
436
437	root	1.19	// const method callback
438	root	1.13	template<class K, void (K::*method)(watcher &w, int) const>
439			void set (const K *object)
440			{
441			set_ (object, const_method_thunk<K, method>);
442			}
443
444			template<class K, void (K::*method)(watcher &w, int) const>
445	root	1.18	static void const_method_thunk (EV_P_ ev_watcher *w, int revents)
446	root	1.13	{
447	root	1.17	K obj = static_cast<K >(w->data);
448	root	1.18	(static_cast<K >(w->data)->method) (static_cast<watcher >(w), revents);
449	root	1.13	}
450
451	root	1.19	// function callback
452	root	1.17	template<void (*function)(watcher &w, int)>
453			void set (void *data = 0)
454	root	1.13	{
455	root	1.16	set_ (data, function_thunk<function>);
456	root	1.13	}
457
458			template<void (*function)(watcher &w, int)>
459	root	1.18	static void function_thunk (EV_P_ ev_watcher *w, int revents)
460	root	1.13	{
461	root	1.18	function (static_cast<watcher >(w), revents);
462	root	1.13	}
463
464	root	1.19	// simple callback
465			template<class K, void (K::*method)()>
466			void set (K *object)
467			{
468			set_ (object, method_noargs_thunk<K, method>);
469			}
470
471			template<class K, void (K::*method)()>
472			static void method_noargs_thunk (EV_P_ ev_watcher *w, int revents)
473			{
474			K obj = static_cast<K >(w->data);
475			(obj->*method) ();
476			}
477
478	root	1.13	void operator ()(int events = EV_UNDEF)
479			{
480	root	1.14	return ev_cb (static_cast<ev_watcher *>(this))
481			(static_cast<ev_watcher *>(this), events);
482	root	1.13	}
483
484			bool is_active () const
485	root	1.1	{
486	root	1.13	return ev_is_active (static_cast<const ev_watcher *>(this));
487	root	1.1	}
488
489	root	1.13	bool is_pending () const
490	root	1.1	{
491	root	1.13	return ev_is_pending (static_cast<const ev_watcher *>(this));
492	root	1.1	}
493	llucax	1.27
494			void feed_event (int revents)
495			{
496			ev_feed_event (EV_A_ static_cast<const ev_watcher *>(this), revents);
497			}
498	root	1.1	};
499
500	llucax	1.26	inline void delay (tstamp interval)
501			{
502			ev_sleep (interval);
503			}
504
505			inline int version_major ()
506			{
507			return ev_version_major ();
508			}
509
510			inline int version_minor ()
511			{
512			return ev_version_minor ();
513			}
514
515			inline unsigned int supported_backends ()
516			{
517			return ev_supported_backends ();
518			}
519
520			inline unsigned int recommended_backends ()
521			{
522			return ev_recommended_backends ();
523			}
524
525			inline unsigned int embeddable_backends ()
526			{
527			return ev_embeddable_backends ();
528			}
529
530			inline void set_allocator (void (cb)(void *ptr, long size))
531			{
532			ev_set_allocator (cb);
533			}
534
535			inline void set_syserr_cb (void (cb)(const char msg))
536			{
537			ev_set_syserr_cb (cb);
538			}
539
540	root	1.1	#if EV_MULTIPLICITY
541	llucax	1.28	#define EV_CONSTRUCT(cppstem,cstem) \
542			(EV_PX = get_default_loop ()) \
543			: base<ev_ ## cstem, cppstem> (EV_A) \
544	root	1.1	{ \
545	root	1.13	}
546	root	1.1	#else
547	llucax	1.28	#define EV_CONSTRUCT(cppstem,cstem) \
548	root	1.13	() \
549			{ \
550			}
551	root	1.1	#endif
552
553			/* using a template here would require quite a bit more lines,
554			* so a macro solution was chosen */
555	root	1.4	#define EV_BEGIN_WATCHER(cppstem,cstem) \
556	root	1.1	\
557	root	1.13	struct cppstem : base<ev_ ## cstem, cppstem> \
558	root	1.1	{ \
559			void start () \
560			{ \
561			ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this)); \
562			} \
563			\
564			void stop () \
565			{ \
566			ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this)); \
567			} \
568			\
569	llucax	1.28	cppstem EV_CONSTRUCT(cppstem,cstem) \
570	root	1.1	\
571	root	1.3	~cppstem () \
572			{ \
573			stop (); \
574			} \
575			\
576	root	1.13	using base<ev_ ## cstem, cppstem>::set; \
577			\
578	root	1.1	private: \
579			\
580	llucax	1.23	cppstem (const cppstem &o); \
581	root	1.6	\
582	llucax	1.23	cppstem & operator =(const cppstem &o); \
583	root	1.1	\
584			public:
585
586	root	1.4	#define EV_END_WATCHER(cppstem,cstem) \
587	root	1.6	};
588	root	1.4
589			EV_BEGIN_WATCHER (io, io)
590	root	1.1	void set (int fd, int events)
591			{
592			int active = is_active ();
593			if (active) stop ();
594			ev_io_set (static_cast<ev_io *>(this), fd, events);
595			if (active) start ();
596			}
597
598			void set (int events)
599			{
600			int active = is_active ();
601			if (active) stop ();
602			ev_io_set (static_cast<ev_io *>(this), fd, events);
603			if (active) start ();
604			}
605
606			void start (int fd, int events)
607			{
608			set (fd, events);
609			start ();
610			}
611	root	1.4	EV_END_WATCHER (io, io)
612	root	1.1
613	root	1.4	EV_BEGIN_WATCHER (timer, timer)
614	root	1.1	void set (ev_tstamp after, ev_tstamp repeat = 0.)
615			{
616			int active = is_active ();
617			if (active) stop ();
618			ev_timer_set (static_cast<ev_timer *>(this), after, repeat);
619			if (active) start ();
620			}
621
622			void start (ev_tstamp after, ev_tstamp repeat = 0.)
623			{
624			set (after, repeat);
625			start ();
626			}
627
628			void again ()
629			{
630			ev_timer_again (EV_A_ static_cast<ev_timer *>(this));
631			}
632	root	1.4	EV_END_WATCHER (timer, timer)
633	root	1.1
634	root	1.8	#if EV_PERIODIC_ENABLE
635	root	1.4	EV_BEGIN_WATCHER (periodic, periodic)
636	root	1.1	void set (ev_tstamp at, ev_tstamp interval = 0.)
637			{
638			int active = is_active ();
639			if (active) stop ();
640			ev_periodic_set (static_cast<ev_periodic *>(this), at, interval, 0);
641			if (active) start ();
642			}
643
644			void start (ev_tstamp at, ev_tstamp interval = 0.)
645			{
646			set (at, interval);
647			start ();
648			}
649
650			void again ()
651			{
652			ev_periodic_again (EV_A_ static_cast<ev_periodic *>(this));
653			}
654	root	1.4	EV_END_WATCHER (periodic, periodic)
655	root	1.3	#endif
656	root	1.1
657	root	1.4	EV_BEGIN_WATCHER (sig, signal)
658	root	1.1	void set (int signum)
659			{
660			int active = is_active ();
661			if (active) stop ();
662			ev_signal_set (static_cast<ev_signal *>(this), signum);
663			if (active) start ();
664			}
665
666			void start (int signum)
667			{
668			set (signum);
669			start ();
670			}
671	root	1.4	EV_END_WATCHER (sig, signal)
672	root	1.1
673	root	1.4	EV_BEGIN_WATCHER (child, child)
674	root	1.1	void set (int pid)
675			{
676			int active = is_active ();
677			if (active) stop ();
678			ev_child_set (static_cast<ev_child *>(this), pid);
679			if (active) start ();
680			}
681
682			void start (int pid)
683			{
684			set (pid);
685			start ();
686			}
687	root	1.4	EV_END_WATCHER (child, child)
688	root	1.1
689	root	1.8	#if EV_STAT_ENABLE
690			EV_BEGIN_WATCHER (stat, stat)
691			void set (const char *path, ev_tstamp interval = 0.)
692			{
693			int active = is_active ();
694			if (active) stop ();
695			ev_stat_set (static_cast<ev_stat *>(this), path, interval);
696			if (active) start ();
697			}
698
699			void start (const char *path, ev_tstamp interval = 0.)
700			{
701	root	1.12	stop ();
702	root	1.8	set (path, interval);
703			start ();
704			}
705
706			void update ()
707			{
708			ev_stat_stat (EV_A_ static_cast<ev_stat *>(this));
709			}
710			EV_END_WATCHER (stat, stat)
711			#endif
712
713			EV_BEGIN_WATCHER (idle, idle)
714			void set () { }
715			EV_END_WATCHER (idle, idle)
716	root	1.7
717	root	1.8	EV_BEGIN_WATCHER (prepare, prepare)
718			void set () { }
719			EV_END_WATCHER (prepare, prepare)
720
721			EV_BEGIN_WATCHER (check, check)
722			void set () { }
723			EV_END_WATCHER (check, check)
724
725			#if EV_EMBED_ENABLE
726	root	1.7	EV_BEGIN_WATCHER (embed, embed)
727			void start (struct ev_loop *embedded_loop)
728			{
729	root	1.12	stop ();
730			ev_embed_set (static_cast<ev_embed *>(this), embedded_loop);
731	root	1.7	start ();
732			}
733
734			void sweep ()
735			{
736			ev_embed_sweep (EV_A_ static_cast<ev_embed *>(this));
737			}
738			EV_END_WATCHER (embed, embed)
739			#endif
740
741	root	1.10	#if EV_FORK_ENABLE
742			EV_BEGIN_WATCHER (fork, fork)
743			void set () { }
744			EV_END_WATCHER (fork, fork)
745			#endif
746
747	llucax	1.28	#undef EV_PX
748			#undef EV_PX_
749	root	1.1	#undef EV_CONSTRUCT
750	root	1.4	#undef EV_BEGIN_WATCHER
751	root	1.7	#undef EV_END_WATCHER
752	llucax	1.28
753	root	1.1	}
754
755			#endif
756