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 == (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:	1.42
Committed:	Mon Nov 3 14:27:06 2008 UTC (15 years, 6 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.41:	+1 -0 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	root	1.42	# undef ERROR // some systems stupidly #define ERROR
78	llucax	1.24	ERROR = EV_ERROR,
79			};
80
81	llucax	1.25	enum
82			{
83	root	1.41	AUTO = EVFLAG_AUTO,
84			NOENV = EVFLAG_NOENV,
85	llucax	1.25	FORKCHECK = EVFLAG_FORKCHECK,
86	root	1.41
87			SELECT = EVBACKEND_SELECT,
88			POLL = EVBACKEND_POLL,
89			EPOLL = EVBACKEND_EPOLL,
90			KQUEUE = EVBACKEND_KQUEUE,
91			DEVPOLL = EVBACKEND_DEVPOLL,
92			PORT = EVBACKEND_PORT
93	llucax	1.25	};
94
95			enum
96			{
97			NONBLOCK = EVLOOP_NONBLOCK,
98	root	1.41	ONESHOT = EVLOOP_ONESHOT
99	llucax	1.25	};
100
101			enum how_t
102			{
103			ONE = EVUNLOOP_ONE,
104			ALL = EVUNLOOP_ALL
105			};
106
107	root	1.32	struct bad_loop
108			#if EV_USE_STDEXCEPT
109			: std::runtime_error
110			#endif
111	llucax	1.30	{
112	root	1.32	#if EV_USE_STDEXCEPT
113	root	1.31	bad_loop ()
114	root	1.32	: std::runtime_error ("libev event loop cannot be initialized, bad value of LIBEV_FLAGS?")
115	root	1.31	{
116			}
117	root	1.32	#endif
118	llucax	1.30	};
119
120	llucax	1.28	#ifdef EV_AX
121			# undef EV_AX
122			#endif
123
124			#ifdef EV_AX_
125			# undef EV_AX_
126			#endif
127
128			#if EV_MULTIPLICITY
129			# define EV_AX raw_loop
130			# define EV_AX_ raw_loop,
131			#else
132			# define EV_AX
133			# define EV_AX_
134			#endif
135
136			struct loop_ref
137			{
138	root	1.36	loop_ref (EV_P) throw ()
139	llucax	1.28	#if EV_MULTIPLICITY
140	root	1.36	: EV_AX (EV_A)
141			#endif
142	llucax	1.33	{
143			}
144	llucax	1.28
145	root	1.32	bool operator == (const loop_ref &other) const throw ()
146	llucax	1.28	{
147			#if EV_MULTIPLICITY
148	root	1.32	return EV_AX == other.EV_AX;
149	llucax	1.28	#else
150			return true;
151			#endif
152			}
153
154	root	1.32	bool operator != (const loop_ref &other) const throw ()
155	llucax	1.28	{
156			#if EV_MULTIPLICITY
157			return ! (*this == other);
158			#else
159			return false;
160			#endif
161			}
162
163			#if EV_MULTIPLICITY
164	root	1.37	bool operator == (struct ev_loop *other) const throw ()
165	llucax	1.28	{
166			return this->EV_AX == other;
167			}
168
169	root	1.37	bool operator != (struct ev_loop *other) const throw ()
170	llucax	1.28	{
171			return ! (*this == other);
172			}
173
174	root	1.37	bool operator == (const struct ev_loop *other) const throw ()
175	llucax	1.28	{
176			return this->EV_AX == other;
177			}
178
179	root	1.37	bool operator != (const struct ev_loop *other) const throw ()
180	llucax	1.28	{
181			return (*this == other);
182			}
183
184	root	1.31	operator struct ev_loop * () const throw ()
185	llucax	1.28	{
186			return EV_AX;
187			}
188
189	root	1.31	operator const struct ev_loop * () const throw ()
190	llucax	1.28	{
191			return EV_AX;
192			}
193
194	root	1.31	bool is_default () const throw ()
195	llucax	1.28	{
196			return EV_AX == ev_default_loop (0);
197			}
198			#endif
199
200			void loop (int flags = 0)
201			{
202			ev_loop (EV_AX_ flags);
203			}
204
205	root	1.31	void unloop (how_t how = ONE) throw ()
206	llucax	1.28	{
207			ev_unloop (EV_AX_ how);
208			}
209
210	root	1.31	void post_fork () throw ()
211	llucax	1.28	{
212			#if EV_MULTIPLICITY
213			ev_loop_fork (EV_AX);
214			#else
215			ev_default_fork ();
216			#endif
217			}
218
219	root	1.31	unsigned int count () const throw ()
220	llucax	1.28	{
221			return ev_loop_count (EV_AX);
222			}
223
224	root	1.31	unsigned int backend () const throw ()
225	llucax	1.28	{
226			return ev_backend (EV_AX);
227			}
228
229	root	1.31	tstamp now () const throw ()
230	llucax	1.28	{
231			return ev_now (EV_AX);
232			}
233
234	root	1.31	void ref () throw ()
235	llucax	1.28	{
236			ev_ref (EV_AX);
237			}
238
239	root	1.31	void unref () throw ()
240	llucax	1.28	{
241			ev_unref (EV_AX);
242			}
243
244	root	1.31	void set_io_collect_interval (tstamp interval) throw ()
245	llucax	1.28	{
246			ev_set_io_collect_interval (EV_AX_ interval);
247			}
248
249	root	1.31	void set_timeout_collect_interval (tstamp interval) throw ()
250	llucax	1.28	{
251			ev_set_timeout_collect_interval (EV_AX_ interval);
252			}
253
254			// function callback
255	root	1.31	void once (int fd, int events, tstamp timeout, void (cb)(int, void ), void* arg = 0) throw ()
256	llucax	1.28	{
257			ev_once (EV_AX_ fd, events, timeout, cb, arg);
258			}
259
260			// method callback
261			template<class K, void (K::*method)(int)>
262	root	1.31	void once (int fd, int events, tstamp timeout, K *object) throw ()
263	llucax	1.28	{
264			once (fd, events, timeout, method_thunk<K, method>, object);
265			}
266
267			template<class K, void (K::*method)(int)>
268			static void method_thunk (int revents, void* arg)
269			{
270			K obj = static_cast<K >(arg);
271			(obj->*method) (revents);
272			}
273
274			// const method callback
275			template<class K, void (K::*method)(int) const>
276	root	1.31	void once (int fd, int events, tstamp timeout, const K *object) throw ()
277	llucax	1.28	{
278			once (fd, events, timeout, const_method_thunk<K, method>, object);
279			}
280
281			template<class K, void (K::*method)(int) const>
282			static void const_method_thunk (int revents, void* arg)
283			{
284			K obj = static_cast<K >(arg);
285			(obj->*method) (revents);
286			}
287
288			// simple method callback
289			template<class K, void (K::*method)()>
290	root	1.31	void once (int fd, int events, tstamp timeout, K *object) throw ()
291	llucax	1.28	{
292			once (fd, events, timeout, method_noargs_thunk<K, method>, object);
293			}
294
295			template<class K, void (K::*method)()>
296			static void method_noargs_thunk (int revents, void* arg)
297			{
298			K obj = static_cast<K >(arg);
299			(obj->*method) ();
300			}
301
302			// simpler function callback
303			template<void (*cb)(int)>
304	root	1.31	void once (int fd, int events, tstamp timeout) throw ()
305	llucax	1.28	{
306			once (fd, events, timeout, simpler_func_thunk<cb>);
307			}
308
309			template<void (*cb)(int)>
310			static void simpler_func_thunk (int revents, void* arg)
311			{
312			(*cb) (revents);
313			}
314
315			// simplest function callback
316			template<void (*cb)()>
317	root	1.31	void once (int fd, int events, tstamp timeout) throw ()
318	llucax	1.28	{
319			once (fd, events, timeout, simplest_func_thunk<cb>);
320			}
321
322			template<void (*cb)()>
323			static void simplest_func_thunk (int revents, void* arg)
324			{
325			(*cb) ();
326			}
327
328	root	1.31	void feed_fd_event (int fd, int revents) throw ()
329	llucax	1.28	{
330			ev_feed_fd_event (EV_AX_ fd, revents);
331			}
332
333	root	1.31	void feed_signal_event (int signum) throw ()
334	llucax	1.28	{
335			ev_feed_signal_event (EV_AX_ signum);
336			}
337
338			#if EV_MULTIPLICITY
339			struct ev_loop* EV_AX;
340			#endif
341
342			};
343
344			#if EV_MULTIPLICITY
345	root	1.36	struct dynamic_loop : loop_ref
346	llucax	1.28	{
347
348	llucax	1.34	dynamic_loop (unsigned int flags = AUTO) throw (bad_loop)
349	root	1.36	: loop_ref (ev_loop_new (flags))
350	llucax	1.28	{
351	root	1.36	if (!EV_AX)
352			throw bad_loop ();
353	llucax	1.28	}
354
355	root	1.31	~dynamic_loop () throw ()
356	llucax	1.28	{
357			ev_loop_destroy (EV_AX);
358			EV_AX = 0;
359			}
360
361			private:
362
363			dynamic_loop (const dynamic_loop &);
364
365			dynamic_loop & operator= (const dynamic_loop &);
366
367			};
368			#endif
369
370	root	1.36	struct default_loop : loop_ref
371	llucax	1.28	{
372	root	1.32	default_loop (unsigned int flags = AUTO) throw (bad_loop)
373	llucax	1.28	#if EV_MULTIPLICITY
374	root	1.32	: loop_ref (ev_default_loop (flags))
375			#endif
376	llucax	1.28	{
377	root	1.36	if (
378			#if EV_MULTIPLICITY
379			!EV_AX
380			#else
381			!ev_default_loop (flags)
382	root	1.32	#endif
383	root	1.36	)
384			throw bad_loop ();
385	llucax	1.28	}
386
387	root	1.31	~default_loop () throw ()
388	llucax	1.28	{
389			ev_default_destroy ();
390			}
391
392			private:
393			default_loop (const default_loop &);
394	root	1.32	default_loop &operator = (const default_loop &);
395	llucax	1.28	};
396
397	root	1.31	inline loop_ref get_default_loop () throw ()
398	llucax	1.28	{
399			#if EV_MULTIPLICITY
400			return ev_default_loop (0);
401			#else
402			return loop_ref ();
403			#endif
404			}
405
406			#undef EV_AX
407			#undef EV_AX_
408
409			#undef EV_PX
410			#undef EV_PX_
411			#if EV_MULTIPLICITY
412			# define EV_PX loop_ref EV_A
413			# define EV_PX_ loop_ref EV_A_
414			#else
415			# define EV_PX
416			# define EV_PX_
417			#endif
418
419	root	1.13	template<class ev_watcher, class watcher>
420			struct base : ev_watcher
421	root	1.1	{
422	root	1.13	#if EV_MULTIPLICITY
423	llucax	1.28	EV_PX;
424	root	1.1
425	root	1.31	void set (EV_PX) throw ()
426	root	1.13	{
427			this->EV_A = EV_A;
428			}
429			#endif
430	root	1.1
431	root	1.31	base (EV_PX) throw ()
432	llucax	1.28	#if EV_MULTIPLICITY
433			: EV_A (EV_A)
434			#endif
435	root	1.13	{
436			ev_init (this, 0);
437			}
438
439	root	1.31	void set_ (void data, void (cb)(EV_P_ ev_watcher *w, int revents)) throw ()
440	root	1.13	{
441	root	1.17	this->data = data;
442	root	1.18	ev_set_cb (static_cast<ev_watcher *>(this), cb);
443	root	1.13	}
444
445	root	1.19	// method callback
446	root	1.13	template<class K, void (K::*method)(watcher &w, int)>
447	root	1.31	void set (K *object) throw ()
448	root	1.13	{
449			set_ (object, method_thunk<K, method>);
450			}
451
452			template<class K, void (K::*method)(watcher &w, int)>
453	root	1.18	static void method_thunk (EV_P_ ev_watcher *w, int revents)
454	root	1.13	{
455	root	1.17	K obj = static_cast<K >(w->data);
456	root	1.18	(obj->method) (static_cast<watcher *>(w), revents);
457	root	1.13	}
458
459	root	1.19	// const method callback
460	root	1.13	template<class K, void (K::*method)(watcher &w, int) const>
461	root	1.31	void set (const K *object) throw ()
462	root	1.13	{
463			set_ (object, const_method_thunk<K, method>);
464			}
465
466			template<class K, void (K::*method)(watcher &w, int) const>
467	root	1.18	static void const_method_thunk (EV_P_ ev_watcher *w, int revents)
468	root	1.13	{
469	root	1.17	K obj = static_cast<K >(w->data);
470	root	1.18	(static_cast<K >(w->data)->method) (static_cast<watcher >(w), revents);
471	root	1.13	}
472
473	root	1.19	// function callback
474	root	1.17	template<void (*function)(watcher &w, int)>
475	root	1.31	void set (void *data = 0) throw ()
476	root	1.13	{
477	root	1.16	set_ (data, function_thunk<function>);
478	root	1.13	}
479
480			template<void (*function)(watcher &w, int)>
481	root	1.18	static void function_thunk (EV_P_ ev_watcher *w, int revents)
482	root	1.13	{
483	root	1.18	function (static_cast<watcher >(w), revents);
484	root	1.13	}
485
486	root	1.19	// simple callback
487			template<class K, void (K::*method)()>
488	root	1.31	void set (K *object) throw ()
489	root	1.19	{
490			set_ (object, method_noargs_thunk<K, method>);
491			}
492
493			template<class K, void (K::*method)()>
494			static void method_noargs_thunk (EV_P_ ev_watcher *w, int revents)
495			{
496			K obj = static_cast<K >(w->data);
497			(obj->*method) ();
498			}
499
500	root	1.13	void operator ()(int events = EV_UNDEF)
501			{
502	root	1.14	return ev_cb (static_cast<ev_watcher *>(this))
503			(static_cast<ev_watcher *>(this), events);
504	root	1.13	}
505
506	root	1.31	bool is_active () const throw ()
507	root	1.1	{
508	root	1.13	return ev_is_active (static_cast<const ev_watcher *>(this));
509	root	1.1	}
510
511	root	1.31	bool is_pending () const throw ()
512	root	1.1	{
513	root	1.13	return ev_is_pending (static_cast<const ev_watcher *>(this));
514	root	1.1	}
515	llucax	1.27
516	root	1.31	void feed_event (int revents) throw ()
517	llucax	1.27	{
518			ev_feed_event (EV_A_ static_cast<const ev_watcher *>(this), revents);
519			}
520	root	1.1	};
521
522	root	1.31	inline tstamp now () throw ()
523	llucax	1.29	{
524			return ev_time ();
525			}
526
527	root	1.31	inline void delay (tstamp interval) throw ()
528	llucax	1.26	{
529			ev_sleep (interval);
530			}
531
532	root	1.31	inline int version_major () throw ()
533	llucax	1.26	{
534			return ev_version_major ();
535			}
536
537	root	1.31	inline int version_minor () throw ()
538	llucax	1.26	{
539			return ev_version_minor ();
540			}
541
542	root	1.31	inline unsigned int supported_backends () throw ()
543	llucax	1.26	{
544			return ev_supported_backends ();
545			}
546
547	root	1.31	inline unsigned int recommended_backends () throw ()
548	llucax	1.26	{
549			return ev_recommended_backends ();
550			}
551
552	root	1.31	inline unsigned int embeddable_backends () throw ()
553	llucax	1.26	{
554			return ev_embeddable_backends ();
555			}
556
557	root	1.31	inline void set_allocator (void (cb)(void *ptr, long size)) throw ()
558	llucax	1.26	{
559			ev_set_allocator (cb);
560			}
561
562	root	1.31	inline void set_syserr_cb (void (cb)(const char msg)) throw ()
563	llucax	1.26	{
564			ev_set_syserr_cb (cb);
565			}
566
567	root	1.1	#if EV_MULTIPLICITY
568	llucax	1.28	#define EV_CONSTRUCT(cppstem,cstem) \
569	root	1.39	(EV_PX = get_default_loop ()) throw () \
570	llucax	1.28	: base<ev_ ## cstem, cppstem> (EV_A) \
571	root	1.1	{ \
572	root	1.13	}
573	root	1.1	#else
574	llucax	1.28	#define EV_CONSTRUCT(cppstem,cstem) \
575	root	1.39	() throw () \
576	root	1.13	{ \
577			}
578	root	1.1	#endif
579
580			/* using a template here would require quite a bit more lines,
581			* so a macro solution was chosen */
582	root	1.4	#define EV_BEGIN_WATCHER(cppstem,cstem) \
583	root	1.1	\
584	root	1.13	struct cppstem : base<ev_ ## cstem, cppstem> \
585	root	1.1	{ \
586	root	1.39	void start () throw () \
587	root	1.1	{ \
588			ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this)); \
589			} \
590			\
591	root	1.39	void stop () throw () \
592	root	1.1	{ \
593			ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this)); \
594			} \
595			\
596	llucax	1.28	cppstem EV_CONSTRUCT(cppstem,cstem) \
597	root	1.1	\
598	root	1.39	~cppstem () throw () \
599	root	1.3	{ \
600			stop (); \
601			} \
602			\
603	root	1.13	using base<ev_ ## cstem, cppstem>::set; \
604			\
605	root	1.1	private: \
606			\
607	llucax	1.23	cppstem (const cppstem &o); \
608	root	1.6	\
609	root	1.39	cppstem &operator =(const cppstem &o); \
610	root	1.1	\
611			public:
612
613	root	1.4	#define EV_END_WATCHER(cppstem,cstem) \
614	root	1.6	};
615	root	1.4
616			EV_BEGIN_WATCHER (io, io)
617	root	1.31	void set (int fd, int events) throw ()
618	root	1.1	{
619			int active = is_active ();
620			if (active) stop ();
621			ev_io_set (static_cast<ev_io *>(this), fd, events);
622			if (active) start ();
623			}
624
625	root	1.31	void set (int events) throw ()
626	root	1.1	{
627			int active = is_active ();
628			if (active) stop ();
629			ev_io_set (static_cast<ev_io *>(this), fd, events);
630			if (active) start ();
631			}
632
633	root	1.31	void start (int fd, int events) throw ()
634	root	1.1	{
635			set (fd, events);
636			start ();
637			}
638	root	1.4	EV_END_WATCHER (io, io)
639	root	1.1
640	root	1.4	EV_BEGIN_WATCHER (timer, timer)
641	root	1.31	void set (ev_tstamp after, ev_tstamp repeat = 0.) throw ()
642	root	1.1	{
643			int active = is_active ();
644			if (active) stop ();
645			ev_timer_set (static_cast<ev_timer *>(this), after, repeat);
646			if (active) start ();
647			}
648
649	root	1.31	void start (ev_tstamp after, ev_tstamp repeat = 0.) throw ()
650	root	1.1	{
651			set (after, repeat);
652			start ();
653			}
654
655	root	1.31	void again () throw ()
656	root	1.1	{
657			ev_timer_again (EV_A_ static_cast<ev_timer *>(this));
658			}
659	root	1.4	EV_END_WATCHER (timer, timer)
660	root	1.1
661	root	1.8	#if EV_PERIODIC_ENABLE
662	root	1.4	EV_BEGIN_WATCHER (periodic, periodic)
663	root	1.31	void set (ev_tstamp at, ev_tstamp interval = 0.) throw ()
664	root	1.1	{
665			int active = is_active ();
666			if (active) stop ();
667			ev_periodic_set (static_cast<ev_periodic *>(this), at, interval, 0);
668			if (active) start ();
669			}
670
671	root	1.31	void start (ev_tstamp at, ev_tstamp interval = 0.) throw ()
672	root	1.1	{
673			set (at, interval);
674			start ();
675			}
676
677	root	1.31	void again () throw ()
678	root	1.1	{
679			ev_periodic_again (EV_A_ static_cast<ev_periodic *>(this));
680			}
681	root	1.4	EV_END_WATCHER (periodic, periodic)
682	root	1.3	#endif
683	root	1.1
684	root	1.4	EV_BEGIN_WATCHER (sig, signal)
685	root	1.31	void set (int signum) throw ()
686	root	1.1	{
687			int active = is_active ();
688			if (active) stop ();
689			ev_signal_set (static_cast<ev_signal *>(this), signum);
690			if (active) start ();
691			}
692
693	root	1.31	void start (int signum) throw ()
694	root	1.1	{
695			set (signum);
696			start ();
697			}
698	root	1.4	EV_END_WATCHER (sig, signal)
699	root	1.1
700	root	1.4	EV_BEGIN_WATCHER (child, child)
701	root	1.37	void set (int pid, int trace = 0) throw ()
702	root	1.1	{
703			int active = is_active ();
704			if (active) stop ();
705	root	1.37	ev_child_set (static_cast<ev_child *>(this), pid, trace);
706	root	1.1	if (active) start ();
707			}
708
709	root	1.37	void start (int pid, int trace = 0) throw ()
710	root	1.1	{
711	root	1.37	set (pid, trace);
712	root	1.1	start ();
713			}
714	root	1.4	EV_END_WATCHER (child, child)
715	root	1.1
716	root	1.8	#if EV_STAT_ENABLE
717			EV_BEGIN_WATCHER (stat, stat)
718	root	1.31	void set (const char *path, ev_tstamp interval = 0.) throw ()
719	root	1.8	{
720			int active = is_active ();
721			if (active) stop ();
722			ev_stat_set (static_cast<ev_stat *>(this), path, interval);
723			if (active) start ();
724			}
725
726	root	1.31	void start (const char *path, ev_tstamp interval = 0.) throw ()
727	root	1.8	{
728	root	1.12	stop ();
729	root	1.8	set (path, interval);
730			start ();
731			}
732
733	root	1.31	void update () throw ()
734	root	1.8	{
735			ev_stat_stat (EV_A_ static_cast<ev_stat *>(this));
736			}
737			EV_END_WATCHER (stat, stat)
738			#endif
739
740			EV_BEGIN_WATCHER (idle, idle)
741	root	1.31	void set () throw () { }
742	root	1.8	EV_END_WATCHER (idle, idle)
743	root	1.7
744	root	1.8	EV_BEGIN_WATCHER (prepare, prepare)
745	root	1.31	void set () throw () { }
746	root	1.8	EV_END_WATCHER (prepare, prepare)
747
748			EV_BEGIN_WATCHER (check, check)
749	root	1.31	void set () throw () { }
750	root	1.8	EV_END_WATCHER (check, check)
751
752			#if EV_EMBED_ENABLE
753	root	1.7	EV_BEGIN_WATCHER (embed, embed)
754	root	1.39	void set (struct ev_loop *embedded_loop) throw ()
755			{
756			int active = is_active ();
757			if (active) stop ();
758			ev_embed_set (static_cast<ev_embed *>(this), embedded_loop);
759			if (active) start ();
760			}
761
762	root	1.31	void start (struct ev_loop *embedded_loop) throw ()
763	root	1.7	{
764	root	1.39	set (embedded_loop);
765	root	1.7	start ();
766			}
767
768			void sweep ()
769			{
770			ev_embed_sweep (EV_A_ static_cast<ev_embed *>(this));
771			}
772			EV_END_WATCHER (embed, embed)
773			#endif
774
775	root	1.10	#if EV_FORK_ENABLE
776			EV_BEGIN_WATCHER (fork, fork)
777	root	1.31	void set () throw () { }
778	root	1.10	EV_END_WATCHER (fork, fork)
779			#endif
780
781	root	1.39	#if EV_ASYNC_ENABLE
782			EV_BEGIN_WATCHER (async, async)
783			void set () throw () { }
784
785			void send () throw ()
786			{
787			ev_async_send (EV_A_ static_cast<ev_async *>(this));
788			}
789
790			bool async_pending () throw ()
791			{
792			return ev_async_pending (static_cast<ev_async *>(this));
793			}
794			EV_END_WATCHER (async, async)
795			#endif
796
797	llucax	1.28	#undef EV_PX
798			#undef EV_PX_
799	root	1.1	#undef EV_CONSTRUCT
800	root	1.4	#undef EV_BEGIN_WATCHER
801	root	1.7	#undef EV_END_WATCHER
802	root	1.1	}
803
804			#endif
805