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,
#   undef ERROR // some systems stupidly #define ERROR
    ERROR    = EV_ERROR,
  };

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

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

  enum
  {
    NONBLOCK = EVLOOP_NONBLOCK,
    ONESHOT  = EVLOOP_ONESHOT
  };

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

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

#ifdef EV_AX
#  undef EV_AX
#endif

#ifdef EV_AX_
#  undef EV_AX_
#endif

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

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

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

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

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

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

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

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

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

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

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

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

    unsigned int 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);
    }

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

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

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

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

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

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

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

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

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

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

#if EV_MULTIPLICITY
    struct ev_loop* EV_AX;
#endif

  };

#if EV_MULTIPLICITY
  struct dynamic_loop : loop_ref
  {

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

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

  private:

    dynamic_loop (const dynamic_loop &);

    dynamic_loop & operator= (const dynamic_loop &);

  };
#endif

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

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

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

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

#undef EV_AX
#undef EV_AX_

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  #define EV_END_WATCHER(cppstem,cstem)                                                 \
  };

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

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

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

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

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

    void again () throw ()
    {
      ev_timer_again (EV_A_ static_cast<ev_timer *>(this));
    }
  EV_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:	1.44
Committed:	Wed Dec 3 15:23:44 2008 UTC (15 years, 5 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-3_51, rel-3_53, rel-3_52, rel-3_6
Changes since 1.43:	+52 -72 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	root	1.43	enum
62			{
63	llucax	1.24	UNDEF = EV_UNDEF,
64			NONE = EV_NONE,
65			READ = EV_READ,
66			WRITE = EV_WRITE,
67			TIMEOUT = EV_TIMEOUT,
68			PERIODIC = EV_PERIODIC,
69			SIGNAL = EV_SIGNAL,
70			CHILD = EV_CHILD,
71			STAT = EV_STAT,
72			IDLE = EV_IDLE,
73			CHECK = EV_CHECK,
74			PREPARE = EV_PREPARE,
75			FORK = EV_FORK,
76	root	1.39	ASYNC = EV_ASYNC,
77	llucax	1.24	EMBED = EV_EMBED,
78	root	1.42	# undef ERROR // some systems stupidly #define ERROR
79	llucax	1.24	ERROR = EV_ERROR,
80			};
81
82	llucax	1.25	enum
83			{
84	root	1.41	AUTO = EVFLAG_AUTO,
85			NOENV = EVFLAG_NOENV,
86	llucax	1.25	FORKCHECK = EVFLAG_FORKCHECK,
87	root	1.41
88			SELECT = EVBACKEND_SELECT,
89			POLL = EVBACKEND_POLL,
90			EPOLL = EVBACKEND_EPOLL,
91			KQUEUE = EVBACKEND_KQUEUE,
92			DEVPOLL = EVBACKEND_DEVPOLL,
93			PORT = EVBACKEND_PORT
94	llucax	1.25	};
95
96			enum
97			{
98			NONBLOCK = EVLOOP_NONBLOCK,
99	root	1.41	ONESHOT = EVLOOP_ONESHOT
100	llucax	1.25	};
101
102			enum how_t
103			{
104			ONE = EVUNLOOP_ONE,
105			ALL = EVUNLOOP_ALL
106			};
107
108	root	1.32	struct bad_loop
109			#if EV_USE_STDEXCEPT
110			: std::runtime_error
111			#endif
112	llucax	1.30	{
113	root	1.32	#if EV_USE_STDEXCEPT
114	root	1.31	bad_loop ()
115	root	1.32	: std::runtime_error ("libev event loop cannot be initialized, bad value of LIBEV_FLAGS?")
116	root	1.31	{
117			}
118	root	1.32	#endif
119	llucax	1.30	};
120
121	llucax	1.28	#ifdef EV_AX
122			# undef EV_AX
123			#endif
124
125			#ifdef EV_AX_
126			# undef EV_AX_
127			#endif
128
129			#if EV_MULTIPLICITY
130			# define EV_AX raw_loop
131			# define EV_AX_ raw_loop,
132			#else
133			# define EV_AX
134			# define EV_AX_
135			#endif
136
137			struct loop_ref
138			{
139	root	1.36	loop_ref (EV_P) throw ()
140	llucax	1.28	#if EV_MULTIPLICITY
141	root	1.36	: EV_AX (EV_A)
142			#endif
143	llucax	1.33	{
144			}
145	llucax	1.28
146	root	1.32	bool operator == (const loop_ref &other) const throw ()
147	llucax	1.28	{
148			#if EV_MULTIPLICITY
149	root	1.32	return EV_AX == other.EV_AX;
150	llucax	1.28	#else
151			return true;
152			#endif
153			}
154
155	root	1.32	bool operator != (const loop_ref &other) const throw ()
156	llucax	1.28	{
157			#if EV_MULTIPLICITY
158			return ! (*this == other);
159			#else
160			return false;
161			#endif
162			}
163
164			#if EV_MULTIPLICITY
165	root	1.44	bool operator == (const EV_P) const throw ()
166	llucax	1.28	{
167	root	1.44	return this->EV_AX == EV_A;
168	llucax	1.28	}
169
170	root	1.44	bool operator != (const EV_P) const throw ()
171	llucax	1.28	{
172	root	1.44	return (*this == EV_A);
173	llucax	1.28	}
174
175	root	1.31	operator struct ev_loop * () const throw ()
176	llucax	1.28	{
177			return EV_AX;
178			}
179
180	root	1.31	operator const struct ev_loop * () const throw ()
181	llucax	1.28	{
182			return EV_AX;
183			}
184
185	root	1.31	bool is_default () const throw ()
186	llucax	1.28	{
187			return EV_AX == ev_default_loop (0);
188			}
189			#endif
190
191			void loop (int flags = 0)
192			{
193			ev_loop (EV_AX_ flags);
194			}
195
196	root	1.31	void unloop (how_t how = ONE) throw ()
197	llucax	1.28	{
198			ev_unloop (EV_AX_ how);
199			}
200
201	root	1.31	void post_fork () throw ()
202	llucax	1.28	{
203			#if EV_MULTIPLICITY
204			ev_loop_fork (EV_AX);
205			#else
206			ev_default_fork ();
207			#endif
208			}
209
210	root	1.31	unsigned int count () const throw ()
211	llucax	1.28	{
212			return ev_loop_count (EV_AX);
213			}
214
215	root	1.31	unsigned int backend () const throw ()
216	llucax	1.28	{
217			return ev_backend (EV_AX);
218			}
219
220	root	1.31	tstamp now () const throw ()
221	llucax	1.28	{
222			return ev_now (EV_AX);
223			}
224
225	root	1.31	void ref () throw ()
226	llucax	1.28	{
227			ev_ref (EV_AX);
228			}
229
230	root	1.31	void unref () throw ()
231	llucax	1.28	{
232			ev_unref (EV_AX);
233			}
234
235	root	1.31	void set_io_collect_interval (tstamp interval) throw ()
236	llucax	1.28	{
237			ev_set_io_collect_interval (EV_AX_ interval);
238			}
239
240	root	1.31	void set_timeout_collect_interval (tstamp interval) throw ()
241	llucax	1.28	{
242			ev_set_timeout_collect_interval (EV_AX_ interval);
243			}
244
245			// function callback
246	root	1.44	void once (int fd, int events, tstamp timeout, void (cb)(int, void ), void *arg = 0) throw ()
247	llucax	1.28	{
248			ev_once (EV_AX_ fd, events, timeout, cb, arg);
249			}
250
251			// method callback
252			template<class K, void (K::*method)(int)>
253	root	1.31	void once (int fd, int events, tstamp timeout, K *object) throw ()
254	llucax	1.28	{
255			once (fd, events, timeout, method_thunk<K, method>, object);
256			}
257
258	root	1.44	// default method == operator ()
259			template<class K>
260			void once (int fd, int events, tstamp timeout, K *object) throw ()
261	llucax	1.28	{
262	root	1.44	once (fd, events, timeout, method_thunk<K, &K::operator ()>, object);
263	llucax	1.28	}
264
265	root	1.44	template<class K, void (K::*method)(int)>
266			static void method_thunk (int revents, void *arg)
267	llucax	1.28	{
268	root	1.44	static_cast<K >(arg)->method
269			(revents);
270	llucax	1.28	}
271
272	root	1.44	// no-argument method callback
273	llucax	1.28	template<class K, void (K::*method)()>
274	root	1.31	void once (int fd, int events, tstamp timeout, K *object) throw ()
275	llucax	1.28	{
276			once (fd, events, timeout, method_noargs_thunk<K, method>, object);
277			}
278
279			template<class K, void (K::*method)()>
280	root	1.44	static void method_noargs_thunk (int revents, void *arg)
281	llucax	1.28	{
282	root	1.44	static_cast<K >(arg)->method
283			();
284	llucax	1.28	}
285
286			// simpler function callback
287			template<void (*cb)(int)>
288	root	1.31	void once (int fd, int events, tstamp timeout) throw ()
289	llucax	1.28	{
290			once (fd, events, timeout, simpler_func_thunk<cb>);
291			}
292
293			template<void (*cb)(int)>
294	root	1.44	static void simpler_func_thunk (int revents, void *arg)
295	llucax	1.28	{
296	root	1.44	(*cb)
297			(revents);
298	llucax	1.28	}
299
300			// simplest function callback
301			template<void (*cb)()>
302	root	1.31	void once (int fd, int events, tstamp timeout) throw ()
303	llucax	1.28	{
304			once (fd, events, timeout, simplest_func_thunk<cb>);
305			}
306
307			template<void (*cb)()>
308	root	1.44	static void simplest_func_thunk (int revents, void *arg)
309	llucax	1.28	{
310	root	1.44	(*cb)
311			();
312	llucax	1.28	}
313
314	root	1.31	void feed_fd_event (int fd, int revents) throw ()
315	llucax	1.28	{
316			ev_feed_fd_event (EV_AX_ fd, revents);
317			}
318
319	root	1.31	void feed_signal_event (int signum) throw ()
320	llucax	1.28	{
321			ev_feed_signal_event (EV_AX_ signum);
322			}
323
324			#if EV_MULTIPLICITY
325			struct ev_loop* EV_AX;
326			#endif
327
328			};
329
330			#if EV_MULTIPLICITY
331	root	1.36	struct dynamic_loop : loop_ref
332	llucax	1.28	{
333
334	llucax	1.34	dynamic_loop (unsigned int flags = AUTO) throw (bad_loop)
335	root	1.36	: loop_ref (ev_loop_new (flags))
336	llucax	1.28	{
337	root	1.36	if (!EV_AX)
338			throw bad_loop ();
339	llucax	1.28	}
340
341	root	1.31	~dynamic_loop () throw ()
342	llucax	1.28	{
343			ev_loop_destroy (EV_AX);
344			EV_AX = 0;
345			}
346
347			private:
348
349			dynamic_loop (const dynamic_loop &);
350
351			dynamic_loop & operator= (const dynamic_loop &);
352
353			};
354			#endif
355
356	root	1.36	struct default_loop : loop_ref
357	llucax	1.28	{
358	root	1.32	default_loop (unsigned int flags = AUTO) throw (bad_loop)
359	llucax	1.28	#if EV_MULTIPLICITY
360	root	1.32	: loop_ref (ev_default_loop (flags))
361			#endif
362	llucax	1.28	{
363	root	1.36	if (
364			#if EV_MULTIPLICITY
365			!EV_AX
366			#else
367			!ev_default_loop (flags)
368	root	1.32	#endif
369	root	1.36	)
370			throw bad_loop ();
371	llucax	1.28	}
372
373	root	1.31	~default_loop () throw ()
374	llucax	1.28	{
375			ev_default_destroy ();
376			}
377
378			private:
379			default_loop (const default_loop &);
380	root	1.32	default_loop &operator = (const default_loop &);
381	llucax	1.28	};
382
383	root	1.31	inline loop_ref get_default_loop () throw ()
384	llucax	1.28	{
385			#if EV_MULTIPLICITY
386			return ev_default_loop (0);
387			#else
388			return loop_ref ();
389			#endif
390			}
391
392			#undef EV_AX
393			#undef EV_AX_
394
395			#undef EV_PX
396			#undef EV_PX_
397			#if EV_MULTIPLICITY
398			# define EV_PX loop_ref EV_A
399			# define EV_PX_ loop_ref EV_A_
400			#else
401			# define EV_PX
402			# define EV_PX_
403			#endif
404
405	root	1.13	template<class ev_watcher, class watcher>
406			struct base : ev_watcher
407	root	1.1	{
408	root	1.13	#if EV_MULTIPLICITY
409	llucax	1.28	EV_PX;
410	root	1.1
411	root	1.44	void set (EV_P) throw ()
412	root	1.13	{
413			this->EV_A = EV_A;
414			}
415			#endif
416	root	1.1
417	root	1.31	base (EV_PX) throw ()
418	llucax	1.28	#if EV_MULTIPLICITY
419			: EV_A (EV_A)
420			#endif
421	root	1.13	{
422			ev_init (this, 0);
423			}
424
425	root	1.44	void set_ (const void data, void (cb)(EV_P_ ev_watcher *w, int revents)) throw ()
426	root	1.13	{
427	root	1.44	this->data = (void *)data;
428	root	1.18	ev_set_cb (static_cast<ev_watcher *>(this), cb);
429	root	1.13	}
430
431	root	1.44	// function callback
432			template<void (*function)(watcher &w, int)>
433			void set (void *data = 0) throw ()
434	root	1.13	{
435	root	1.44	set_ (data, function_thunk<function>);
436	root	1.13	}
437
438	root	1.44	template<void (*function)(watcher &w, int)>
439			static void function_thunk (EV_P_ ev_watcher *w, int revents)
440	root	1.13	{
441	root	1.44	function
442			(static_cast<watcher >(w), revents);
443	root	1.13	}
444
445	root	1.44	// method callback
446			template<class K, void (K::*method)(watcher &w, int)>
447			void set (K *object) throw ()
448	root	1.13	{
449	root	1.44	set_ (object, method_thunk<K, method>);
450	root	1.13	}
451
452	root	1.44	// default method == operator ()
453			template<class K>
454			void set (K *object) throw ()
455	root	1.13	{
456	root	1.44	set_ (object, method_thunk<K, &K::operator ()>);
457	root	1.13	}
458
459	root	1.44	template<class K, void (K::*method)(watcher &w, int)>
460			static void method_thunk (EV_P_ ev_watcher *w, int revents)
461	root	1.13	{
462	root	1.44	(static_cast<K >(w->data)->method)
463			(static_cast<watcher >(w), revents);
464	root	1.13	}
465
466	root	1.44	// no-argument callback
467	root	1.19	template<class K, void (K::*method)()>
468	root	1.31	void set (K *object) throw ()
469	root	1.19	{
470			set_ (object, method_noargs_thunk<K, method>);
471			}
472
473			template<class K, void (K::*method)()>
474			static void method_noargs_thunk (EV_P_ ev_watcher *w, int revents)
475			{
476	root	1.44	static_cast<K >(w->data)->method
477			();
478	root	1.19	}
479
480	root	1.13	void operator ()(int events = EV_UNDEF)
481			{
482	root	1.44	return
483			ev_cb (static_cast<ev_watcher *>(this))
484			(static_cast<ev_watcher *>(this), events);
485	root	1.13	}
486
487	root	1.31	bool is_active () const throw ()
488	root	1.1	{
489	root	1.13	return ev_is_active (static_cast<const ev_watcher *>(this));
490	root	1.1	}
491
492	root	1.31	bool is_pending () const throw ()
493	root	1.1	{
494	root	1.13	return ev_is_pending (static_cast<const ev_watcher *>(this));
495	root	1.1	}
496	llucax	1.27
497	root	1.31	void feed_event (int revents) throw ()
498	llucax	1.27	{
499			ev_feed_event (EV_A_ static_cast<const ev_watcher *>(this), revents);
500			}
501	root	1.1	};
502
503	root	1.31	inline tstamp now () throw ()
504	llucax	1.29	{
505			return ev_time ();
506			}
507
508	root	1.31	inline void delay (tstamp interval) throw ()
509	llucax	1.26	{
510			ev_sleep (interval);
511			}
512
513	root	1.31	inline int version_major () throw ()
514	llucax	1.26	{
515			return ev_version_major ();
516			}
517
518	root	1.31	inline int version_minor () throw ()
519	llucax	1.26	{
520			return ev_version_minor ();
521			}
522
523	root	1.31	inline unsigned int supported_backends () throw ()
524	llucax	1.26	{
525			return ev_supported_backends ();
526			}
527
528	root	1.31	inline unsigned int recommended_backends () throw ()
529	llucax	1.26	{
530			return ev_recommended_backends ();
531			}
532
533	root	1.31	inline unsigned int embeddable_backends () throw ()
534	llucax	1.26	{
535			return ev_embeddable_backends ();
536			}
537
538	root	1.31	inline void set_allocator (void (cb)(void *ptr, long size)) throw ()
539	llucax	1.26	{
540			ev_set_allocator (cb);
541			}
542
543	root	1.31	inline void set_syserr_cb (void (cb)(const char msg)) throw ()
544	llucax	1.26	{
545			ev_set_syserr_cb (cb);
546			}
547
548	root	1.1	#if EV_MULTIPLICITY
549	llucax	1.28	#define EV_CONSTRUCT(cppstem,cstem) \
550	root	1.39	(EV_PX = get_default_loop ()) throw () \
551	llucax	1.28	: base<ev_ ## cstem, cppstem> (EV_A) \
552	root	1.1	{ \
553	root	1.13	}
554	root	1.1	#else
555	llucax	1.28	#define EV_CONSTRUCT(cppstem,cstem) \
556	root	1.39	() throw () \
557	root	1.13	{ \
558			}
559	root	1.1	#endif
560
561			/* using a template here would require quite a bit more lines,
562			* so a macro solution was chosen */
563	root	1.4	#define EV_BEGIN_WATCHER(cppstem,cstem) \
564	root	1.1	\
565	root	1.13	struct cppstem : base<ev_ ## cstem, cppstem> \
566	root	1.1	{ \
567	root	1.39	void start () throw () \
568	root	1.1	{ \
569			ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this)); \
570			} \
571			\
572	root	1.39	void stop () throw () \
573	root	1.1	{ \
574			ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this)); \
575			} \
576			\
577	llucax	1.28	cppstem EV_CONSTRUCT(cppstem,cstem) \
578	root	1.1	\
579	root	1.39	~cppstem () throw () \
580	root	1.3	{ \
581			stop (); \
582			} \
583			\
584	root	1.13	using base<ev_ ## cstem, cppstem>::set; \
585			\
586	root	1.1	private: \
587			\
588	llucax	1.23	cppstem (const cppstem &o); \
589	root	1.6	\
590	root	1.39	cppstem &operator =(const cppstem &o); \
591	root	1.1	\
592			public:
593
594	root	1.4	#define EV_END_WATCHER(cppstem,cstem) \
595	root	1.6	};
596	root	1.4
597			EV_BEGIN_WATCHER (io, io)
598	root	1.31	void set (int fd, int events) throw ()
599	root	1.1	{
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	root	1.31	void set (int events) throw ()
607	root	1.1	{
608			int active = is_active ();
609			if (active) stop ();
610			ev_io_set (static_cast<ev_io *>(this), fd, events);
611			if (active) start ();
612			}
613
614	root	1.31	void start (int fd, int events) throw ()
615	root	1.1	{
616			set (fd, events);
617			start ();
618			}
619	root	1.4	EV_END_WATCHER (io, io)
620	root	1.1
621	root	1.4	EV_BEGIN_WATCHER (timer, timer)
622	root	1.31	void set (ev_tstamp after, ev_tstamp repeat = 0.) throw ()
623	root	1.1	{
624			int active = is_active ();
625			if (active) stop ();
626			ev_timer_set (static_cast<ev_timer *>(this), after, repeat);
627			if (active) start ();
628			}
629
630	root	1.31	void start (ev_tstamp after, ev_tstamp repeat = 0.) throw ()
631	root	1.1	{
632			set (after, repeat);
633			start ();
634			}
635
636	root	1.31	void again () throw ()
637	root	1.1	{
638			ev_timer_again (EV_A_ static_cast<ev_timer *>(this));
639			}
640	root	1.4	EV_END_WATCHER (timer, timer)
641	root	1.1
642	root	1.8	#if EV_PERIODIC_ENABLE
643	root	1.4	EV_BEGIN_WATCHER (periodic, periodic)
644	root	1.31	void set (ev_tstamp at, ev_tstamp interval = 0.) throw ()
645	root	1.1	{
646			int active = is_active ();
647			if (active) stop ();
648			ev_periodic_set (static_cast<ev_periodic *>(this), at, interval, 0);
649			if (active) start ();
650			}
651
652	root	1.31	void start (ev_tstamp at, ev_tstamp interval = 0.) throw ()
653	root	1.1	{
654			set (at, interval);
655			start ();
656			}
657
658	root	1.31	void again () throw ()
659	root	1.1	{
660			ev_periodic_again (EV_A_ static_cast<ev_periodic *>(this));
661			}
662	root	1.4	EV_END_WATCHER (periodic, periodic)
663	root	1.3	#endif
664	root	1.1
665	root	1.4	EV_BEGIN_WATCHER (sig, signal)
666	root	1.31	void set (int signum) throw ()
667	root	1.1	{
668			int active = is_active ();
669			if (active) stop ();
670			ev_signal_set (static_cast<ev_signal *>(this), signum);
671			if (active) start ();
672			}
673
674	root	1.31	void start (int signum) throw ()
675	root	1.1	{
676			set (signum);
677			start ();
678			}
679	root	1.4	EV_END_WATCHER (sig, signal)
680	root	1.1
681	root	1.4	EV_BEGIN_WATCHER (child, child)
682	root	1.37	void set (int pid, int trace = 0) throw ()
683	root	1.1	{
684			int active = is_active ();
685			if (active) stop ();
686	root	1.37	ev_child_set (static_cast<ev_child *>(this), pid, trace);
687	root	1.1	if (active) start ();
688			}
689
690	root	1.37	void start (int pid, int trace = 0) throw ()
691	root	1.1	{
692	root	1.37	set (pid, trace);
693	root	1.1	start ();
694			}
695	root	1.4	EV_END_WATCHER (child, child)
696	root	1.1
697	root	1.8	#if EV_STAT_ENABLE
698			EV_BEGIN_WATCHER (stat, stat)
699	root	1.31	void set (const char *path, ev_tstamp interval = 0.) throw ()
700	root	1.8	{
701			int active = is_active ();
702			if (active) stop ();
703			ev_stat_set (static_cast<ev_stat *>(this), path, interval);
704			if (active) start ();
705			}
706
707	root	1.31	void start (const char *path, ev_tstamp interval = 0.) throw ()
708	root	1.8	{
709	root	1.12	stop ();
710	root	1.8	set (path, interval);
711			start ();
712			}
713
714	root	1.31	void update () throw ()
715	root	1.8	{
716			ev_stat_stat (EV_A_ static_cast<ev_stat *>(this));
717			}
718			EV_END_WATCHER (stat, stat)
719			#endif
720
721			EV_BEGIN_WATCHER (idle, idle)
722	root	1.31	void set () throw () { }
723	root	1.8	EV_END_WATCHER (idle, idle)
724	root	1.7
725	root	1.8	EV_BEGIN_WATCHER (prepare, prepare)
726	root	1.31	void set () throw () { }
727	root	1.8	EV_END_WATCHER (prepare, prepare)
728
729			EV_BEGIN_WATCHER (check, check)
730	root	1.31	void set () throw () { }
731	root	1.8	EV_END_WATCHER (check, check)
732
733			#if EV_EMBED_ENABLE
734	root	1.7	EV_BEGIN_WATCHER (embed, embed)
735	root	1.39	void set (struct ev_loop *embedded_loop) throw ()
736			{
737			int active = is_active ();
738			if (active) stop ();
739			ev_embed_set (static_cast<ev_embed *>(this), embedded_loop);
740			if (active) start ();
741			}
742
743	root	1.31	void start (struct ev_loop *embedded_loop) throw ()
744	root	1.7	{
745	root	1.39	set (embedded_loop);
746	root	1.7	start ();
747			}
748
749			void sweep ()
750			{
751			ev_embed_sweep (EV_A_ static_cast<ev_embed *>(this));
752			}
753			EV_END_WATCHER (embed, embed)
754			#endif
755
756	root	1.10	#if EV_FORK_ENABLE
757			EV_BEGIN_WATCHER (fork, fork)
758	root	1.31	void set () throw () { }
759	root	1.10	EV_END_WATCHER (fork, fork)
760			#endif
761
762	root	1.39	#if EV_ASYNC_ENABLE
763			EV_BEGIN_WATCHER (async, async)
764			void set () throw () { }
765
766			void send () throw ()
767			{
768			ev_async_send (EV_A_ static_cast<ev_async *>(this));
769			}
770
771			bool async_pending () throw ()
772			{
773			return ev_async_pending (static_cast<ev_async *>(this));
774			}
775			EV_END_WATCHER (async, async)
776			#endif
777
778	llucax	1.28	#undef EV_PX
779			#undef EV_PX_
780	root	1.1	#undef EV_CONSTRUCT
781	root	1.4	#undef EV_BEGIN_WATCHER
782	root	1.7	#undef EV_END_WATCHER
783	root	1.1	}
784
785			#endif
786