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

#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,
    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
  };

  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)
#if EV_MULTIPLICITY
      throw (bad_loop) : EV_AX (EV_A)
    {
      if (!EV_AX)
        throw bad_loop ();
    }
#else
      throw ()
    {
    }
#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== (struct ev_loop *other) const throw ()
    {
      return this->EV_AX == other;
    }

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

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

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

    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 count () const throw ()
    {
      return ev_loop_count (EV_AX);
    }

    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);
    }

    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);
    }

    // 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);
    }

    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) throw ()
    {
      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) 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)
    {
      K *obj = static_cast<K *>(arg);
      (obj->*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) EV_THROW (bad_loop)
      : loop_ref (ev_loop_new (flags))
    {
    }

    ~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
    {
#ifndef EV_MULTIPLICITY
    if (!ev_default_loop (flags))
      throw bad_loop ();
#endif
    }

    ~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;

      void set (EV_PX) 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_ (void *data, void (*cb)(EV_P_ ev_watcher *w, int revents)) throw ()
    {
      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) throw ()
    {
      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) throw ()
    {
      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) 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);
    }

    // simple 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)
    {
      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 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_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

  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)

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

    void start (int pid) throw ()
    {
      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.) 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

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

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

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

  #if EV_EMBED_ENABLE
  EV_BEGIN_WATCHER (embed, embed)
    void start (struct ev_loop *embedded_loop) throw ()
    {
      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 () throw () { }
  EV_END_WATCHER (fork, fork)
  #endif

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

}

#undef EV_THROW

#endif

Revision:	1.33
Committed:	Tue Jan 22 17:56:29 2008 UTC (16 years, 3 months ago) by llucax
Content type:	text/plain
Branch:	MAIN
Changes since 1.32:	+7 -5 lines
Log Message:	loop_ref constructor don't throw anything if EV_MULTIPLICITY is false.
#	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	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			enum {
62			UNDEF = EV_UNDEF,
63			NONE = EV_NONE,
64			READ = EV_READ,
65			WRITE = EV_WRITE,
66			TIMEOUT = EV_TIMEOUT,
67			PERIODIC = EV_PERIODIC,
68			SIGNAL = EV_SIGNAL,
69			CHILD = EV_CHILD,
70			STAT = EV_STAT,
71			IDLE = EV_IDLE,
72			CHECK = EV_CHECK,
73			PREPARE = EV_PREPARE,
74			FORK = EV_FORK,
75			EMBED = EV_EMBED,
76			ERROR = EV_ERROR,
77			};
78
79	llucax	1.25	enum
80			{
81			AUTO = EVFLAG_AUTO,
82			NOENV = EVFLAG_NOENV,
83			FORKCHECK = EVFLAG_FORKCHECK,
84			SELECT = EVBACKEND_SELECT,
85			POLL = EVBACKEND_POLL,
86			EPOLL = EVBACKEND_EPOLL,
87			KQUEUE = EVBACKEND_KQUEUE,
88			DEVPOLL = EVBACKEND_DEVPOLL,
89			PORT = EVBACKEND_PORT
90			};
91
92			enum
93			{
94			NONBLOCK = EVLOOP_NONBLOCK,
95			ONESHOT = EVLOOP_ONESHOT
96			};
97
98			enum how_t
99			{
100			ONE = EVUNLOOP_ONE,
101			ALL = EVUNLOOP_ALL
102			};
103
104	root	1.32	struct bad_loop
105			#if EV_USE_STDEXCEPT
106			: std::runtime_error
107			#endif
108	llucax	1.30	{
109	root	1.32	#if EV_USE_STDEXCEPT
110	root	1.31	bad_loop ()
111	root	1.32	: std::runtime_error ("libev event loop cannot be initialized, bad value of LIBEV_FLAGS?")
112	root	1.31	{
113			}
114	root	1.32	#endif
115	llucax	1.30	};
116
117	llucax	1.28	#ifdef EV_AX
118			# undef EV_AX
119			#endif
120
121			#ifdef EV_AX_
122			# undef EV_AX_
123			#endif
124
125			#if EV_MULTIPLICITY
126			# define EV_AX raw_loop
127			# define EV_AX_ raw_loop,
128			#else
129			# define EV_AX
130			# define EV_AX_
131			#endif
132
133			struct loop_ref
134			{
135
136	llucax	1.33	loop_ref (EV_P)
137	llucax	1.28	#if EV_MULTIPLICITY
138	llucax	1.33	throw (bad_loop) : EV_AX (EV_A)
139	llucax	1.28	{
140	root	1.32	if (!EV_AX)
141	llucax	1.30	throw bad_loop ();
142	llucax	1.33	}
143			#else
144			throw ()
145			{
146			}
147	llucax	1.30	#endif
148	llucax	1.28
149	root	1.32	bool operator == (const loop_ref &other) const throw ()
150	llucax	1.28	{
151			#if EV_MULTIPLICITY
152	root	1.32	return EV_AX == other.EV_AX;
153	llucax	1.28	#else
154			return true;
155			#endif
156			}
157
158	root	1.32	bool operator != (const loop_ref &other) const throw ()
159	llucax	1.28	{
160			#if EV_MULTIPLICITY
161			return ! (*this == other);
162			#else
163			return false;
164			#endif
165			}
166
167			#if EV_MULTIPLICITY
168	root	1.31	bool operator== (struct ev_loop *other) const throw ()
169	llucax	1.28	{
170			return this->EV_AX == other;
171			}
172
173	root	1.31	bool operator!= (struct ev_loop *other) const throw ()
174	llucax	1.28	{
175			return ! (*this == other);
176			}
177
178	root	1.31	bool operator== (const struct ev_loop *other) const throw ()
179	llucax	1.28	{
180			return this->EV_AX == other;
181			}
182
183	root	1.31	bool operator!= (const struct ev_loop *other) const throw ()
184	llucax	1.28	{
185			return (*this == other);
186			}
187
188	root	1.31	operator struct ev_loop * () const throw ()
189	llucax	1.28	{
190			return EV_AX;
191			}
192
193	root	1.31	operator const struct ev_loop * () const throw ()
194	llucax	1.28	{
195			return EV_AX;
196			}
197
198	root	1.31	bool is_default () const throw ()
199	llucax	1.28	{
200			return EV_AX == ev_default_loop (0);
201			}
202			#endif
203
204			void loop (int flags = 0)
205			{
206			ev_loop (EV_AX_ flags);
207			}
208
209	root	1.31	void unloop (how_t how = ONE) throw ()
210	llucax	1.28	{
211			ev_unloop (EV_AX_ how);
212			}
213
214	root	1.31	void post_fork () throw ()
215	llucax	1.28	{
216			#if EV_MULTIPLICITY
217			ev_loop_fork (EV_AX);
218			#else
219			ev_default_fork ();
220			#endif
221			}
222
223	root	1.31	unsigned int count () const throw ()
224	llucax	1.28	{
225			return ev_loop_count (EV_AX);
226			}
227
228	root	1.31	unsigned int backend () const throw ()
229	llucax	1.28	{
230			return ev_backend (EV_AX);
231			}
232
233	root	1.31	tstamp now () const throw ()
234	llucax	1.28	{
235			return ev_now (EV_AX);
236			}
237
238	root	1.31	void ref () throw ()
239	llucax	1.28	{
240			ev_ref (EV_AX);
241			}
242
243	root	1.31	void unref () throw ()
244	llucax	1.28	{
245			ev_unref (EV_AX);
246			}
247
248	root	1.31	void set_io_collect_interval (tstamp interval) throw ()
249	llucax	1.28	{
250			ev_set_io_collect_interval (EV_AX_ interval);
251			}
252
253	root	1.31	void set_timeout_collect_interval (tstamp interval) throw ()
254	llucax	1.28	{
255			ev_set_timeout_collect_interval (EV_AX_ interval);
256			}
257
258			// function callback
259	root	1.31	void once (int fd, int events, tstamp timeout, void (cb)(int, void ), void* arg = 0) throw ()
260	llucax	1.28	{
261			ev_once (EV_AX_ fd, events, timeout, cb, arg);
262			}
263
264			// method callback
265			template<class K, void (K::*method)(int)>
266	root	1.31	void once (int fd, int events, tstamp timeout, K *object) throw ()
267	llucax	1.28	{
268			once (fd, events, timeout, method_thunk<K, method>, object);
269			}
270
271			template<class K, void (K::*method)(int)>
272			static void method_thunk (int revents, void* arg)
273			{
274			K obj = static_cast<K >(arg);
275			(obj->*method) (revents);
276			}
277
278			// const method callback
279			template<class K, void (K::*method)(int) const>
280	root	1.31	void once (int fd, int events, tstamp timeout, const K *object) throw ()
281	llucax	1.28	{
282			once (fd, events, timeout, const_method_thunk<K, method>, object);
283			}
284
285			template<class K, void (K::*method)(int) const>
286			static void const_method_thunk (int revents, void* arg)
287			{
288			K obj = static_cast<K >(arg);
289			(obj->*method) (revents);
290			}
291
292			// simple method callback
293			template<class K, void (K::*method)()>
294	root	1.31	void once (int fd, int events, tstamp timeout, K *object) throw ()
295	llucax	1.28	{
296			once (fd, events, timeout, method_noargs_thunk<K, method>, object);
297			}
298
299			template<class K, void (K::*method)()>
300			static void method_noargs_thunk (int revents, void* arg)
301			{
302			K obj = static_cast<K >(arg);
303			(obj->*method) ();
304			}
305
306			// simpler function callback
307			template<void (*cb)(int)>
308	root	1.31	void once (int fd, int events, tstamp timeout) throw ()
309	llucax	1.28	{
310			once (fd, events, timeout, simpler_func_thunk<cb>);
311			}
312
313			template<void (*cb)(int)>
314			static void simpler_func_thunk (int revents, void* arg)
315			{
316			(*cb) (revents);
317			}
318
319			// simplest function callback
320			template<void (*cb)()>
321	root	1.31	void once (int fd, int events, tstamp timeout) throw ()
322	llucax	1.28	{
323			once (fd, events, timeout, simplest_func_thunk<cb>);
324			}
325
326			template<void (*cb)()>
327			static void simplest_func_thunk (int revents, void* arg)
328			{
329			(*cb) ();
330			}
331
332	root	1.31	void feed_fd_event (int fd, int revents) throw ()
333	llucax	1.28	{
334			ev_feed_fd_event (EV_AX_ fd, revents);
335			}
336
337	root	1.31	void feed_signal_event (int signum) throw ()
338	llucax	1.28	{
339			ev_feed_signal_event (EV_AX_ signum);
340			}
341
342			#if EV_MULTIPLICITY
343			struct ev_loop* EV_AX;
344			#endif
345
346			};
347
348			#if EV_MULTIPLICITY
349			struct dynamic_loop: loop_ref
350			{
351
352	llucax	1.30	dynamic_loop (unsigned int flags = AUTO) EV_THROW (bad_loop)
353	llucax	1.28	: loop_ref (ev_loop_new (flags))
354			{
355			}
356
357	root	1.31	~dynamic_loop () throw ()
358	llucax	1.28	{
359			ev_loop_destroy (EV_AX);
360			EV_AX = 0;
361			}
362
363			private:
364
365			dynamic_loop (const dynamic_loop &);
366
367			dynamic_loop & operator= (const dynamic_loop &);
368
369			};
370			#endif
371
372			struct default_loop: loop_ref
373			{
374
375	root	1.32	default_loop (unsigned int flags = AUTO) throw (bad_loop)
376	llucax	1.28	#if EV_MULTIPLICITY
377	root	1.32	: loop_ref (ev_default_loop (flags))
378			#endif
379	llucax	1.28	{
380	root	1.32	#ifndef EV_MULTIPLICITY
381			if (!ev_default_loop (flags))
382			throw bad_loop ();
383			#endif
384	llucax	1.28	}
385
386	root	1.31	~default_loop () throw ()
387	llucax	1.28	{
388			ev_default_destroy ();
389			}
390
391			private:
392			default_loop (const default_loop &);
393	root	1.32	default_loop &operator = (const default_loop &);
394	llucax	1.28	};
395
396	root	1.31	inline loop_ref get_default_loop () throw ()
397	llucax	1.28	{
398			#if EV_MULTIPLICITY
399			return ev_default_loop (0);
400			#else
401			return loop_ref ();
402			#endif
403			}
404
405			#undef EV_AX
406			#undef EV_AX_
407
408			#undef EV_PX
409			#undef EV_PX_
410			#if EV_MULTIPLICITY
411			# define EV_PX loop_ref EV_A
412			# define EV_PX_ loop_ref EV_A_
413			#else
414			# define EV_PX
415			# define EV_PX_
416			#endif
417
418	root	1.13	template<class ev_watcher, class watcher>
419			struct base : ev_watcher
420	root	1.1	{
421	root	1.13	#if EV_MULTIPLICITY
422	llucax	1.28	EV_PX;
423	root	1.1
424	root	1.31	void set (EV_PX) throw ()
425	root	1.13	{
426			this->EV_A = EV_A;
427			}
428			#endif
429	root	1.1
430	root	1.31	base (EV_PX) throw ()
431	llucax	1.28	#if EV_MULTIPLICITY
432			: EV_A (EV_A)
433			#endif
434	root	1.13	{
435			ev_init (this, 0);
436			}
437
438	root	1.31	void set_ (void data, void (cb)(EV_P_ ev_watcher *w, int revents)) throw ()
439	root	1.13	{
440	root	1.17	this->data = data;
441	root	1.18	ev_set_cb (static_cast<ev_watcher *>(this), cb);
442	root	1.13	}
443
444	root	1.19	// method callback
445	root	1.13	template<class K, void (K::*method)(watcher &w, int)>
446	root	1.31	void set (K *object) throw ()
447	root	1.13	{
448			set_ (object, method_thunk<K, method>);
449			}
450
451			template<class K, void (K::*method)(watcher &w, int)>
452	root	1.18	static void method_thunk (EV_P_ ev_watcher *w, int revents)
453	root	1.13	{
454	root	1.17	K obj = static_cast<K >(w->data);
455	root	1.18	(obj->method) (static_cast<watcher *>(w), revents);
456	root	1.13	}
457
458	root	1.19	// const method callback
459	root	1.13	template<class K, void (K::*method)(watcher &w, int) const>
460	root	1.31	void set (const K *object) throw ()
461	root	1.13	{
462			set_ (object, const_method_thunk<K, method>);
463			}
464
465			template<class K, void (K::*method)(watcher &w, int) const>
466	root	1.18	static void const_method_thunk (EV_P_ ev_watcher *w, int revents)
467	root	1.13	{
468	root	1.17	K obj = static_cast<K >(w->data);
469	root	1.18	(static_cast<K >(w->data)->method) (static_cast<watcher >(w), revents);
470	root	1.13	}
471
472	root	1.19	// function callback
473	root	1.17	template<void (*function)(watcher &w, int)>
474	root	1.31	void set (void *data = 0) throw ()
475	root	1.13	{
476	root	1.16	set_ (data, function_thunk<function>);
477	root	1.13	}
478
479			template<void (*function)(watcher &w, int)>
480	root	1.18	static void function_thunk (EV_P_ ev_watcher *w, int revents)
481	root	1.13	{
482	root	1.18	function (static_cast<watcher >(w), revents);
483	root	1.13	}
484
485	root	1.19	// simple callback
486			template<class K, void (K::*method)()>
487	root	1.31	void set (K *object) throw ()
488	root	1.19	{
489			set_ (object, method_noargs_thunk<K, method>);
490			}
491
492			template<class K, void (K::*method)()>
493			static void method_noargs_thunk (EV_P_ ev_watcher *w, int revents)
494			{
495			K obj = static_cast<K >(w->data);
496			(obj->*method) ();
497			}
498
499	root	1.13	void operator ()(int events = EV_UNDEF)
500			{
501	root	1.14	return ev_cb (static_cast<ev_watcher *>(this))
502			(static_cast<ev_watcher *>(this), events);
503	root	1.13	}
504
505	root	1.31	bool is_active () const throw ()
506	root	1.1	{
507	root	1.13	return ev_is_active (static_cast<const ev_watcher *>(this));
508	root	1.1	}
509
510	root	1.31	bool is_pending () const throw ()
511	root	1.1	{
512	root	1.13	return ev_is_pending (static_cast<const ev_watcher *>(this));
513	root	1.1	}
514	llucax	1.27
515	root	1.31	void feed_event (int revents) throw ()
516	llucax	1.27	{
517			ev_feed_event (EV_A_ static_cast<const ev_watcher *>(this), revents);
518			}
519	root	1.1	};
520
521	root	1.31	inline tstamp now () throw ()
522	llucax	1.29	{
523			return ev_time ();
524			}
525
526	root	1.31	inline void delay (tstamp interval) throw ()
527	llucax	1.26	{
528			ev_sleep (interval);
529			}
530
531	root	1.31	inline int version_major () throw ()
532	llucax	1.26	{
533			return ev_version_major ();
534			}
535
536	root	1.31	inline int version_minor () throw ()
537	llucax	1.26	{
538			return ev_version_minor ();
539			}
540
541	root	1.31	inline unsigned int supported_backends () throw ()
542	llucax	1.26	{
543			return ev_supported_backends ();
544			}
545
546	root	1.31	inline unsigned int recommended_backends () throw ()
547	llucax	1.26	{
548			return ev_recommended_backends ();
549			}
550
551	root	1.31	inline unsigned int embeddable_backends () throw ()
552	llucax	1.26	{
553			return ev_embeddable_backends ();
554			}
555
556	root	1.31	inline void set_allocator (void (cb)(void *ptr, long size)) throw ()
557	llucax	1.26	{
558			ev_set_allocator (cb);
559			}
560
561	root	1.31	inline void set_syserr_cb (void (cb)(const char msg)) throw ()
562	llucax	1.26	{
563			ev_set_syserr_cb (cb);
564			}
565
566	root	1.1	#if EV_MULTIPLICITY
567	llucax	1.28	#define EV_CONSTRUCT(cppstem,cstem) \
568	root	1.31	(EV_PX = get_default_loop ()) throw () \
569	llucax	1.28	: base<ev_ ## cstem, cppstem> (EV_A) \
570	root	1.1	{ \
571	root	1.13	}
572	root	1.1	#else
573	llucax	1.28	#define EV_CONSTRUCT(cppstem,cstem) \
574	root	1.31	() throw () \
575	root	1.13	{ \
576			}
577	root	1.1	#endif
578
579			/* using a template here would require quite a bit more lines,
580			* so a macro solution was chosen */
581	root	1.4	#define EV_BEGIN_WATCHER(cppstem,cstem) \
582	root	1.1	\
583	root	1.13	struct cppstem : base<ev_ ## cstem, cppstem> \
584	root	1.1	{ \
585	root	1.31	void start () throw () \
586	root	1.1	{ \
587			ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this)); \
588			} \
589			\
590	root	1.31	void stop () throw () \
591	root	1.1	{ \
592			ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this)); \
593			} \
594			\
595	llucax	1.28	cppstem EV_CONSTRUCT(cppstem,cstem) \
596	root	1.1	\
597	root	1.31	~cppstem () throw () \
598	root	1.3	{ \
599			stop (); \
600			} \
601			\
602	root	1.13	using base<ev_ ## cstem, cppstem>::set; \
603			\
604	root	1.1	private: \
605			\
606	llucax	1.23	cppstem (const cppstem &o); \
607	root	1.6	\
608	llucax	1.23	cppstem & operator =(const cppstem &o); \
609	root	1.1	\
610			public:
611
612	root	1.4	#define EV_END_WATCHER(cppstem,cstem) \
613	root	1.6	};
614	root	1.4
615			EV_BEGIN_WATCHER (io, io)
616	root	1.31	void set (int fd, int events) throw ()
617	root	1.1	{
618			int active = is_active ();
619			if (active) stop ();
620			ev_io_set (static_cast<ev_io *>(this), fd, events);
621			if (active) start ();
622			}
623
624	root	1.31	void set (int events) throw ()
625	root	1.1	{
626			int active = is_active ();
627			if (active) stop ();
628			ev_io_set (static_cast<ev_io *>(this), fd, events);
629			if (active) start ();
630			}
631
632	root	1.31	void start (int fd, int events) throw ()
633	root	1.1	{
634			set (fd, events);
635			start ();
636			}
637	root	1.4	EV_END_WATCHER (io, io)
638	root	1.1
639	root	1.4	EV_BEGIN_WATCHER (timer, timer)
640	root	1.31	void set (ev_tstamp after, ev_tstamp repeat = 0.) throw ()
641	root	1.1	{
642			int active = is_active ();
643			if (active) stop ();
644			ev_timer_set (static_cast<ev_timer *>(this), after, repeat);
645			if (active) start ();
646			}
647
648	root	1.31	void start (ev_tstamp after, ev_tstamp repeat = 0.) throw ()
649	root	1.1	{
650			set (after, repeat);
651			start ();
652			}
653
654	root	1.31	void again () throw ()
655	root	1.1	{
656			ev_timer_again (EV_A_ static_cast<ev_timer *>(this));
657			}
658	root	1.4	EV_END_WATCHER (timer, timer)
659	root	1.1
660	root	1.8	#if EV_PERIODIC_ENABLE
661	root	1.4	EV_BEGIN_WATCHER (periodic, periodic)
662	root	1.31	void set (ev_tstamp at, ev_tstamp interval = 0.) throw ()
663	root	1.1	{
664			int active = is_active ();
665			if (active) stop ();
666			ev_periodic_set (static_cast<ev_periodic *>(this), at, interval, 0);
667			if (active) start ();
668			}
669
670	root	1.31	void start (ev_tstamp at, ev_tstamp interval = 0.) throw ()
671	root	1.1	{
672			set (at, interval);
673			start ();
674			}
675
676	root	1.31	void again () throw ()
677	root	1.1	{
678			ev_periodic_again (EV_A_ static_cast<ev_periodic *>(this));
679			}
680	root	1.4	EV_END_WATCHER (periodic, periodic)
681	root	1.3	#endif
682	root	1.1
683	root	1.4	EV_BEGIN_WATCHER (sig, signal)
684	root	1.31	void set (int signum) throw ()
685	root	1.1	{
686			int active = is_active ();
687			if (active) stop ();
688			ev_signal_set (static_cast<ev_signal *>(this), signum);
689			if (active) start ();
690			}
691
692	root	1.31	void start (int signum) throw ()
693	root	1.1	{
694			set (signum);
695			start ();
696			}
697	root	1.4	EV_END_WATCHER (sig, signal)
698	root	1.1
699	root	1.4	EV_BEGIN_WATCHER (child, child)
700	root	1.31	void set (int pid) throw ()
701	root	1.1	{
702			int active = is_active ();
703			if (active) stop ();
704			ev_child_set (static_cast<ev_child *>(this), pid);
705			if (active) start ();
706			}
707
708	root	1.31	void start (int pid) throw ()
709	root	1.1	{
710			set (pid);
711			start ();
712			}
713	root	1.4	EV_END_WATCHER (child, child)
714	root	1.1
715	root	1.8	#if EV_STAT_ENABLE
716			EV_BEGIN_WATCHER (stat, stat)
717	root	1.31	void set (const char *path, ev_tstamp interval = 0.) throw ()
718	root	1.8	{
719			int active = is_active ();
720			if (active) stop ();
721			ev_stat_set (static_cast<ev_stat *>(this), path, interval);
722			if (active) start ();
723			}
724
725	root	1.31	void start (const char *path, ev_tstamp interval = 0.) throw ()
726	root	1.8	{
727	root	1.12	stop ();
728	root	1.8	set (path, interval);
729			start ();
730			}
731
732	root	1.31	void update () throw ()
733	root	1.8	{
734			ev_stat_stat (EV_A_ static_cast<ev_stat *>(this));
735			}
736			EV_END_WATCHER (stat, stat)
737			#endif
738
739			EV_BEGIN_WATCHER (idle, idle)
740	root	1.31	void set () throw () { }
741	root	1.8	EV_END_WATCHER (idle, idle)
742	root	1.7
743	root	1.8	EV_BEGIN_WATCHER (prepare, prepare)
744	root	1.31	void set () throw () { }
745	root	1.8	EV_END_WATCHER (prepare, prepare)
746
747			EV_BEGIN_WATCHER (check, check)
748	root	1.31	void set () throw () { }
749	root	1.8	EV_END_WATCHER (check, check)
750
751			#if EV_EMBED_ENABLE
752	root	1.7	EV_BEGIN_WATCHER (embed, embed)
753	root	1.31	void start (struct ev_loop *embedded_loop) throw ()
754	root	1.7	{
755	root	1.12	stop ();
756			ev_embed_set (static_cast<ev_embed *>(this), embedded_loop);
757	root	1.7	start ();
758			}
759
760			void sweep ()
761			{
762			ev_embed_sweep (EV_A_ static_cast<ev_embed *>(this));
763			}
764			EV_END_WATCHER (embed, embed)
765			#endif
766
767	root	1.10	#if EV_FORK_ENABLE
768			EV_BEGIN_WATCHER (fork, fork)
769	root	1.31	void set () throw () { }
770	root	1.10	EV_END_WATCHER (fork, fork)
771			#endif
772
773	llucax	1.28	#undef EV_PX
774			#undef EV_PX_
775	root	1.1	#undef EV_CONSTRUCT
776	root	1.4	#undef EV_BEGIN_WATCHER
777	root	1.7	#undef EV_END_WATCHER
778	llucax	1.28
779	root	1.1	}
780
781	llucax	1.30	#undef EV_THROW
782
783	root	1.1	#endif
784