libev/ev%2B%2B.h

/*
 * libev simple C++ wrapper classes
 *
 * Copyright (c) 2007,2008 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,
    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 == (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) 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;

      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, 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)

  #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 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 set () throw () { }

    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:	1.40
Committed:	Sat May 17 12:15:30 2008 UTC (16 years ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-3_33, rel-3_4, rel-3_44, rel-3_41, rel-3_42, rel-3_43, rel-3_431
Changes since 1.39:	+1 -1 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.21	/*
2			* libev simple C++ wrapper classes
3			*
4	root	1.40	* Copyright (c) 2007,2008 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			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	root	1.39	ASYNC = EV_ASYNC,
76	llucax	1.24	EMBED = EV_EMBED,
77			ERROR = EV_ERROR,
78			};
79
80	llucax	1.25	enum
81			{
82			AUTO = EVFLAG_AUTO,
83			NOENV = EVFLAG_NOENV,
84			FORKCHECK = EVFLAG_FORKCHECK,
85			SELECT = EVBACKEND_SELECT,
86			POLL = EVBACKEND_POLL,
87			EPOLL = EVBACKEND_EPOLL,
88			KQUEUE = EVBACKEND_KQUEUE,
89			DEVPOLL = EVBACKEND_DEVPOLL,
90			PORT = EVBACKEND_PORT
91			};
92
93			enum
94			{
95			NONBLOCK = EVLOOP_NONBLOCK,
96			ONESHOT = EVLOOP_ONESHOT
97			};
98
99			enum how_t
100			{
101			ONE = EVUNLOOP_ONE,
102			ALL = EVUNLOOP_ALL
103			};
104
105	root	1.32	struct bad_loop
106			#if EV_USE_STDEXCEPT
107			: std::runtime_error
108			#endif
109	llucax	1.30	{
110	root	1.32	#if EV_USE_STDEXCEPT
111	root	1.31	bad_loop ()
112	root	1.32	: std::runtime_error ("libev event loop cannot be initialized, bad value of LIBEV_FLAGS?")
113	root	1.31	{
114			}
115	root	1.32	#endif
116	llucax	1.30	};
117
118	llucax	1.28	#ifdef EV_AX
119			# undef EV_AX
120			#endif
121
122			#ifdef EV_AX_
123			# undef EV_AX_
124			#endif
125
126			#if EV_MULTIPLICITY
127			# define EV_AX raw_loop
128			# define EV_AX_ raw_loop,
129			#else
130			# define EV_AX
131			# define EV_AX_
132			#endif
133
134			struct loop_ref
135			{
136	root	1.36	loop_ref (EV_P) throw ()
137	llucax	1.28	#if EV_MULTIPLICITY
138	root	1.36	: EV_AX (EV_A)
139			#endif
140	llucax	1.33	{
141			}
142	llucax	1.28
143	root	1.32	bool operator == (const loop_ref &other) const throw ()
144	llucax	1.28	{
145			#if EV_MULTIPLICITY
146	root	1.32	return EV_AX == other.EV_AX;
147	llucax	1.28	#else
148			return true;
149			#endif
150			}
151
152	root	1.32	bool operator != (const loop_ref &other) const throw ()
153	llucax	1.28	{
154			#if EV_MULTIPLICITY
155			return ! (*this == other);
156			#else
157			return false;
158			#endif
159			}
160
161			#if EV_MULTIPLICITY
162	root	1.37	bool operator == (struct ev_loop *other) const throw ()
163	llucax	1.28	{
164			return this->EV_AX == other;
165			}
166
167	root	1.37	bool operator != (struct ev_loop *other) const throw ()
168	llucax	1.28	{
169			return ! (*this == other);
170			}
171
172	root	1.37	bool operator == (const struct ev_loop *other) const throw ()
173	llucax	1.28	{
174			return this->EV_AX == other;
175			}
176
177	root	1.37	bool operator != (const struct ev_loop *other) const throw ()
178	llucax	1.28	{
179			return (*this == other);
180			}
181
182	root	1.31	operator struct ev_loop * () const throw ()
183	llucax	1.28	{
184			return EV_AX;
185			}
186
187	root	1.31	operator const struct ev_loop * () const throw ()
188	llucax	1.28	{
189			return EV_AX;
190			}
191
192	root	1.31	bool is_default () const throw ()
193	llucax	1.28	{
194			return EV_AX == ev_default_loop (0);
195			}
196			#endif
197
198			void loop (int flags = 0)
199			{
200			ev_loop (EV_AX_ flags);
201			}
202
203	root	1.31	void unloop (how_t how = ONE) throw ()
204	llucax	1.28	{
205			ev_unloop (EV_AX_ how);
206			}
207
208	root	1.31	void post_fork () throw ()
209	llucax	1.28	{
210			#if EV_MULTIPLICITY
211			ev_loop_fork (EV_AX);
212			#else
213			ev_default_fork ();
214			#endif
215			}
216
217	root	1.31	unsigned int count () const throw ()
218	llucax	1.28	{
219			return ev_loop_count (EV_AX);
220			}
221
222	root	1.31	unsigned int backend () const throw ()
223	llucax	1.28	{
224			return ev_backend (EV_AX);
225			}
226
227	root	1.31	tstamp now () const throw ()
228	llucax	1.28	{
229			return ev_now (EV_AX);
230			}
231
232	root	1.31	void ref () throw ()
233	llucax	1.28	{
234			ev_ref (EV_AX);
235			}
236
237	root	1.31	void unref () throw ()
238	llucax	1.28	{
239			ev_unref (EV_AX);
240			}
241
242	root	1.31	void set_io_collect_interval (tstamp interval) throw ()
243	llucax	1.28	{
244			ev_set_io_collect_interval (EV_AX_ interval);
245			}
246
247	root	1.31	void set_timeout_collect_interval (tstamp interval) throw ()
248	llucax	1.28	{
249			ev_set_timeout_collect_interval (EV_AX_ interval);
250			}
251
252			// function callback
253	root	1.31	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			template<class K, void (K::*method)(int)>
266			static void method_thunk (int revents, void* arg)
267			{
268			K obj = static_cast<K >(arg);
269			(obj->*method) (revents);
270			}
271
272			// const method callback
273			template<class K, void (K::*method)(int) const>
274	root	1.31	void once (int fd, int events, tstamp timeout, const K *object) throw ()
275	llucax	1.28	{
276			once (fd, events, timeout, const_method_thunk<K, method>, object);
277			}
278
279			template<class K, void (K::*method)(int) const>
280			static void const_method_thunk (int revents, void* arg)
281			{
282			K obj = static_cast<K >(arg);
283			(obj->*method) (revents);
284			}
285
286			// simple method callback
287			template<class K, void (K::*method)()>
288	root	1.31	void once (int fd, int events, tstamp timeout, K *object) throw ()
289	llucax	1.28	{
290			once (fd, events, timeout, method_noargs_thunk<K, method>, object);
291			}
292
293			template<class K, void (K::*method)()>
294			static void method_noargs_thunk (int revents, void* arg)
295			{
296			K obj = static_cast<K >(arg);
297			(obj->*method) ();
298			}
299
300			// simpler function callback
301			template<void (*cb)(int)>
302	root	1.31	void once (int fd, int events, tstamp timeout) throw ()
303	llucax	1.28	{
304			once (fd, events, timeout, simpler_func_thunk<cb>);
305			}
306
307			template<void (*cb)(int)>
308			static void simpler_func_thunk (int revents, void* arg)
309			{
310			(*cb) (revents);
311			}
312
313			// simplest function callback
314			template<void (*cb)()>
315	root	1.31	void once (int fd, int events, tstamp timeout) throw ()
316	llucax	1.28	{
317			once (fd, events, timeout, simplest_func_thunk<cb>);
318			}
319
320			template<void (*cb)()>
321			static void simplest_func_thunk (int revents, void* arg)
322			{
323			(*cb) ();
324			}
325
326	root	1.31	void feed_fd_event (int fd, int revents) throw ()
327	llucax	1.28	{
328			ev_feed_fd_event (EV_AX_ fd, revents);
329			}
330
331	root	1.31	void feed_signal_event (int signum) throw ()
332	llucax	1.28	{
333			ev_feed_signal_event (EV_AX_ signum);
334			}
335
336			#if EV_MULTIPLICITY
337			struct ev_loop* EV_AX;
338			#endif
339
340			};
341
342			#if EV_MULTIPLICITY
343	root	1.36	struct dynamic_loop : loop_ref
344	llucax	1.28	{
345
346	llucax	1.34	dynamic_loop (unsigned int flags = AUTO) throw (bad_loop)
347	root	1.36	: loop_ref (ev_loop_new (flags))
348	llucax	1.28	{
349	root	1.36	if (!EV_AX)
350			throw bad_loop ();
351	llucax	1.28	}
352
353	root	1.31	~dynamic_loop () throw ()
354	llucax	1.28	{
355			ev_loop_destroy (EV_AX);
356			EV_AX = 0;
357			}
358
359			private:
360
361			dynamic_loop (const dynamic_loop &);
362
363			dynamic_loop & operator= (const dynamic_loop &);
364
365			};
366			#endif
367
368	root	1.36	struct default_loop : loop_ref
369	llucax	1.28	{
370	root	1.32	default_loop (unsigned int flags = AUTO) throw (bad_loop)
371	llucax	1.28	#if EV_MULTIPLICITY
372	root	1.32	: loop_ref (ev_default_loop (flags))
373			#endif
374	llucax	1.28	{
375	root	1.36	if (
376			#if EV_MULTIPLICITY
377			!EV_AX
378			#else
379			!ev_default_loop (flags)
380	root	1.32	#endif
381	root	1.36	)
382			throw bad_loop ();
383	llucax	1.28	}
384
385	root	1.31	~default_loop () throw ()
386	llucax	1.28	{
387			ev_default_destroy ();
388			}
389
390			private:
391			default_loop (const default_loop &);
392	root	1.32	default_loop &operator = (const default_loop &);
393	llucax	1.28	};
394
395	root	1.31	inline loop_ref get_default_loop () throw ()
396	llucax	1.28	{
397			#if EV_MULTIPLICITY
398			return ev_default_loop (0);
399			#else
400			return loop_ref ();
401			#endif
402			}
403
404			#undef EV_AX
405			#undef EV_AX_
406
407			#undef EV_PX
408			#undef EV_PX_
409			#if EV_MULTIPLICITY
410			# define EV_PX loop_ref EV_A
411			# define EV_PX_ loop_ref EV_A_
412			#else
413			# define EV_PX
414			# define EV_PX_
415			#endif
416
417	root	1.13	template<class ev_watcher, class watcher>
418			struct base : ev_watcher
419	root	1.1	{
420	root	1.13	#if EV_MULTIPLICITY
421	llucax	1.28	EV_PX;
422	root	1.1
423	root	1.31	void set (EV_PX) throw ()
424	root	1.13	{
425			this->EV_A = EV_A;
426			}
427			#endif
428	root	1.1
429	root	1.31	base (EV_PX) throw ()
430	llucax	1.28	#if EV_MULTIPLICITY
431			: EV_A (EV_A)
432			#endif
433	root	1.13	{
434			ev_init (this, 0);
435			}
436
437	root	1.31	void set_ (void data, void (cb)(EV_P_ ev_watcher *w, int revents)) throw ()
438	root	1.13	{
439	root	1.17	this->data = data;
440	root	1.18	ev_set_cb (static_cast<ev_watcher *>(this), cb);
441	root	1.13	}
442
443	root	1.19	// method callback
444	root	1.13	template<class K, void (K::*method)(watcher &w, int)>
445	root	1.31	void set (K *object) throw ()
446	root	1.13	{
447			set_ (object, method_thunk<K, method>);
448			}
449
450			template<class K, void (K::*method)(watcher &w, int)>
451	root	1.18	static void method_thunk (EV_P_ ev_watcher *w, int revents)
452	root	1.13	{
453	root	1.17	K obj = static_cast<K >(w->data);
454	root	1.18	(obj->method) (static_cast<watcher *>(w), revents);
455	root	1.13	}
456
457	root	1.19	// const method callback
458	root	1.13	template<class K, void (K::*method)(watcher &w, int) const>
459	root	1.31	void set (const K *object) throw ()
460	root	1.13	{
461			set_ (object, const_method_thunk<K, method>);
462			}
463
464			template<class K, void (K::*method)(watcher &w, int) const>
465	root	1.18	static void const_method_thunk (EV_P_ ev_watcher *w, int revents)
466	root	1.13	{
467	root	1.17	K obj = static_cast<K >(w->data);
468	root	1.18	(static_cast<K >(w->data)->method) (static_cast<watcher >(w), revents);
469	root	1.13	}
470
471	root	1.19	// function callback
472	root	1.17	template<void (*function)(watcher &w, int)>
473	root	1.31	void set (void *data = 0) throw ()
474	root	1.13	{
475	root	1.16	set_ (data, function_thunk<function>);
476	root	1.13	}
477
478			template<void (*function)(watcher &w, int)>
479	root	1.18	static void function_thunk (EV_P_ ev_watcher *w, int revents)
480	root	1.13	{
481	root	1.18	function (static_cast<watcher >(w), revents);
482	root	1.13	}
483
484	root	1.19	// simple callback
485			template<class K, void (K::*method)()>
486	root	1.31	void set (K *object) throw ()
487	root	1.19	{
488			set_ (object, method_noargs_thunk<K, method>);
489			}
490
491			template<class K, void (K::*method)()>
492			static void method_noargs_thunk (EV_P_ ev_watcher *w, int revents)
493			{
494			K obj = static_cast<K >(w->data);
495			(obj->*method) ();
496			}
497
498	root	1.13	void operator ()(int events = EV_UNDEF)
499			{
500	root	1.14	return ev_cb (static_cast<ev_watcher *>(this))
501			(static_cast<ev_watcher *>(this), events);
502	root	1.13	}
503
504	root	1.31	bool is_active () const throw ()
505	root	1.1	{
506	root	1.13	return ev_is_active (static_cast<const ev_watcher *>(this));
507	root	1.1	}
508
509	root	1.31	bool is_pending () const throw ()
510	root	1.1	{
511	root	1.13	return ev_is_pending (static_cast<const ev_watcher *>(this));
512	root	1.1	}
513	llucax	1.27
514	root	1.31	void feed_event (int revents) throw ()
515	llucax	1.27	{
516			ev_feed_event (EV_A_ static_cast<const ev_watcher *>(this), revents);
517			}
518	root	1.1	};
519
520	root	1.31	inline tstamp now () throw ()
521	llucax	1.29	{
522			return ev_time ();
523			}
524
525	root	1.31	inline void delay (tstamp interval) throw ()
526	llucax	1.26	{
527			ev_sleep (interval);
528			}
529
530	root	1.31	inline int version_major () throw ()
531	llucax	1.26	{
532			return ev_version_major ();
533			}
534
535	root	1.31	inline int version_minor () throw ()
536	llucax	1.26	{
537			return ev_version_minor ();
538			}
539
540	root	1.31	inline unsigned int supported_backends () throw ()
541	llucax	1.26	{
542			return ev_supported_backends ();
543			}
544
545	root	1.31	inline unsigned int recommended_backends () throw ()
546	llucax	1.26	{
547			return ev_recommended_backends ();
548			}
549
550	root	1.31	inline unsigned int embeddable_backends () throw ()
551	llucax	1.26	{
552			return ev_embeddable_backends ();
553			}
554
555	root	1.31	inline void set_allocator (void (cb)(void *ptr, long size)) throw ()
556	llucax	1.26	{
557			ev_set_allocator (cb);
558			}
559
560	root	1.31	inline void set_syserr_cb (void (cb)(const char msg)) throw ()
561	llucax	1.26	{
562			ev_set_syserr_cb (cb);
563			}
564
565	root	1.1	#if EV_MULTIPLICITY
566	llucax	1.28	#define EV_CONSTRUCT(cppstem,cstem) \
567	root	1.39	(EV_PX = get_default_loop ()) throw () \
568	llucax	1.28	: base<ev_ ## cstem, cppstem> (EV_A) \
569	root	1.1	{ \
570	root	1.13	}
571	root	1.1	#else
572	llucax	1.28	#define EV_CONSTRUCT(cppstem,cstem) \
573	root	1.39	() throw () \
574	root	1.13	{ \
575			}
576	root	1.1	#endif
577
578			/* using a template here would require quite a bit more lines,
579			* so a macro solution was chosen */
580	root	1.4	#define EV_BEGIN_WATCHER(cppstem,cstem) \
581	root	1.1	\
582	root	1.13	struct cppstem : base<ev_ ## cstem, cppstem> \
583	root	1.1	{ \
584	root	1.39	void start () throw () \
585	root	1.1	{ \
586			ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this)); \
587			} \
588			\
589	root	1.39	void stop () throw () \
590	root	1.1	{ \
591			ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this)); \
592			} \
593			\
594	llucax	1.28	cppstem EV_CONSTRUCT(cppstem,cstem) \
595	root	1.1	\
596	root	1.39	~cppstem () throw () \
597	root	1.3	{ \
598			stop (); \
599			} \
600			\
601	root	1.13	using base<ev_ ## cstem, cppstem>::set; \
602			\
603	root	1.1	private: \
604			\
605	llucax	1.23	cppstem (const cppstem &o); \
606	root	1.6	\
607	root	1.39	cppstem &operator =(const cppstem &o); \
608	root	1.1	\
609			public:
610
611	root	1.4	#define EV_END_WATCHER(cppstem,cstem) \
612	root	1.6	};
613	root	1.4
614			EV_BEGIN_WATCHER (io, io)
615	root	1.31	void set (int fd, int events) throw ()
616	root	1.1	{
617			int active = is_active ();
618			if (active) stop ();
619			ev_io_set (static_cast<ev_io *>(this), fd, events);
620			if (active) start ();
621			}
622
623	root	1.31	void set (int events) throw ()
624	root	1.1	{
625			int active = is_active ();
626			if (active) stop ();
627			ev_io_set (static_cast<ev_io *>(this), fd, events);
628			if (active) start ();
629			}
630
631	root	1.31	void start (int fd, int events) throw ()
632	root	1.1	{
633			set (fd, events);
634			start ();
635			}
636	root	1.4	EV_END_WATCHER (io, io)
637	root	1.1
638	root	1.4	EV_BEGIN_WATCHER (timer, timer)
639	root	1.31	void set (ev_tstamp after, ev_tstamp repeat = 0.) throw ()
640	root	1.1	{
641			int active = is_active ();
642			if (active) stop ();
643			ev_timer_set (static_cast<ev_timer *>(this), after, repeat);
644			if (active) start ();
645			}
646
647	root	1.31	void start (ev_tstamp after, ev_tstamp repeat = 0.) throw ()
648	root	1.1	{
649			set (after, repeat);
650			start ();
651			}
652
653	root	1.31	void again () throw ()
654	root	1.1	{
655			ev_timer_again (EV_A_ static_cast<ev_timer *>(this));
656			}
657	root	1.4	EV_END_WATCHER (timer, timer)
658	root	1.1
659	root	1.8	#if EV_PERIODIC_ENABLE
660	root	1.4	EV_BEGIN_WATCHER (periodic, periodic)
661	root	1.31	void set (ev_tstamp at, ev_tstamp interval = 0.) throw ()
662	root	1.1	{
663			int active = is_active ();
664			if (active) stop ();
665			ev_periodic_set (static_cast<ev_periodic *>(this), at, interval, 0);
666			if (active) start ();
667			}
668
669	root	1.31	void start (ev_tstamp at, ev_tstamp interval = 0.) throw ()
670	root	1.1	{
671			set (at, interval);
672			start ();
673			}
674
675	root	1.31	void again () throw ()
676	root	1.1	{
677			ev_periodic_again (EV_A_ static_cast<ev_periodic *>(this));
678			}
679	root	1.4	EV_END_WATCHER (periodic, periodic)
680	root	1.3	#endif
681	root	1.1
682	root	1.4	EV_BEGIN_WATCHER (sig, signal)
683	root	1.31	void set (int signum) throw ()
684	root	1.1	{
685			int active = is_active ();
686			if (active) stop ();
687			ev_signal_set (static_cast<ev_signal *>(this), signum);
688			if (active) start ();
689			}
690
691	root	1.31	void start (int signum) throw ()
692	root	1.1	{
693			set (signum);
694			start ();
695			}
696	root	1.4	EV_END_WATCHER (sig, signal)
697	root	1.1
698	root	1.4	EV_BEGIN_WATCHER (child, child)
699	root	1.37	void set (int pid, int trace = 0) throw ()
700	root	1.1	{
701			int active = is_active ();
702			if (active) stop ();
703	root	1.37	ev_child_set (static_cast<ev_child *>(this), pid, trace);
704	root	1.1	if (active) start ();
705			}
706
707	root	1.37	void start (int pid, int trace = 0) throw ()
708	root	1.1	{
709	root	1.37	set (pid, trace);
710	root	1.1	start ();
711			}
712	root	1.4	EV_END_WATCHER (child, child)
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			EV_BEGIN_WATCHER (idle, idle)
739	root	1.31	void set () throw () { }
740	root	1.8	EV_END_WATCHER (idle, idle)
741	root	1.7
742	root	1.8	EV_BEGIN_WATCHER (prepare, prepare)
743	root	1.31	void set () throw () { }
744	root	1.8	EV_END_WATCHER (prepare, prepare)
745
746			EV_BEGIN_WATCHER (check, check)
747	root	1.31	void set () throw () { }
748	root	1.8	EV_END_WATCHER (check, check)
749
750			#if EV_EMBED_ENABLE
751	root	1.7	EV_BEGIN_WATCHER (embed, embed)
752	root	1.39	void set (struct ev_loop *embedded_loop) throw ()
753			{
754			int active = is_active ();
755			if (active) stop ();
756			ev_embed_set (static_cast<ev_embed *>(this), embedded_loop);
757			if (active) start ();
758			}
759
760	root	1.31	void start (struct ev_loop *embedded_loop) throw ()
761	root	1.7	{
762	root	1.39	set (embedded_loop);
763	root	1.7	start ();
764			}
765
766			void sweep ()
767			{
768			ev_embed_sweep (EV_A_ static_cast<ev_embed *>(this));
769			}
770			EV_END_WATCHER (embed, embed)
771			#endif
772
773	root	1.10	#if EV_FORK_ENABLE
774			EV_BEGIN_WATCHER (fork, fork)
775	root	1.31	void set () throw () { }
776	root	1.10	EV_END_WATCHER (fork, fork)
777			#endif
778
779	root	1.39	#if EV_ASYNC_ENABLE
780			EV_BEGIN_WATCHER (async, async)
781			void set () throw () { }
782
783			void send () throw ()
784			{
785			ev_async_send (EV_A_ static_cast<ev_async *>(this));
786			}
787
788			bool async_pending () throw ()
789			{
790			return ev_async_pending (static_cast<ev_async *>(this));
791			}
792			EV_END_WATCHER (async, async)
793			#endif
794
795	llucax	1.28	#undef EV_PX
796			#undef EV_PX_
797	root	1.1	#undef EV_CONSTRUCT
798	root	1.4	#undef EV_BEGIN_WATCHER
799	root	1.7	#undef EV_END_WATCHER
800	root	1.1	}
801
802			#endif
803