libev/ev%2B%2B.h

/*
 * libev simple C++ wrapper classes
 *
 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modifica-
 * tion, are permitted provided that the following conditions are met:
 * 
 *   1.  Redistributions of source code must retain the above copyright notice,
 *       this list of conditions and the following disclaimer.
 * 
 *   2.  Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Alternatively, the contents of this file may be used under the terms of
 * the GNU General Public License ("GPL") version 2 or any later version,
 * in which case the provisions of the GPL are applicable instead of
 * the above. If you wish to allow the use of your version of this file
 * only under the terms of the GPL and not to allow others to use your
 * version of this file under the BSD license, indicate your decision
 * by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL. If you do not delete the
 * provisions above, a recipient may use your version of this file under
 * either the BSD or the GPL.
 */

#ifndef EVPP_H__
#define EVPP_H__

#ifdef EV_H
# include EV_H
#else
# include "ev.h"
#endif

#ifndef EV_USE_STDEXCEPT
# define EV_USE_STDEXCEPT 1
#endif

#if EV_USE_STDEXCEPT
# include <stdexcept>
#endif

namespace ev {

  typedef ev_tstamp tstamp;

  enum {
    UNDEF    = EV_UNDEF,
    NONE     = EV_NONE,
    READ     = EV_READ,
    WRITE    = EV_WRITE,
    TIMEOUT  = EV_TIMEOUT,
    PERIODIC = EV_PERIODIC,
    SIGNAL   = EV_SIGNAL,
    CHILD    = EV_CHILD,
    STAT     = EV_STAT,
    IDLE     = EV_IDLE,
    CHECK    = EV_CHECK,
    PREPARE  = EV_PREPARE,
    FORK     = EV_FORK,
    EMBED    = EV_EMBED,
    ERROR    = EV_ERROR,
  };

  enum
  {
    AUTO = EVFLAG_AUTO,
    NOENV = EVFLAG_NOENV,
    FORKCHECK = EVFLAG_FORKCHECK,
    SELECT = EVBACKEND_SELECT,
    POLL = EVBACKEND_POLL,
    EPOLL = EVBACKEND_EPOLL,
    KQUEUE = EVBACKEND_KQUEUE,
    DEVPOLL = EVBACKEND_DEVPOLL,
    PORT = EVBACKEND_PORT
  };

  enum
  {
    NONBLOCK = EVLOOP_NONBLOCK,
    ONESHOT = EVLOOP_ONESHOT
  };

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

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

#ifdef EV_AX
#  undef EV_AX
#endif

#ifdef EV_AX_
#  undef EV_AX_
#endif

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

  struct loop_ref
  {
    loop_ref (EV_P) 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 start (struct ev_loop *embedded_loop) throw ()
    {
      stop ();
      ev_embed_set (static_cast<ev_embed *>(this), embedded_loop);
      start ();
    }

    void sweep ()
    {
      ev_embed_sweep (EV_A_ static_cast<ev_embed *>(this));
    }
  EV_END_WATCHER (embed, embed)
  #endif

  #if EV_FORK_ENABLE
  EV_BEGIN_WATCHER (fork, fork)
    void set () throw () { }
  EV_END_WATCHER (fork, fork)
  #endif

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

#endif

Revision:	1.38
Committed:	Mon Jan 28 11:43:37 2008 UTC (16 years, 3 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-3_2, rel-3_1, rel-3_0
Changes since 1.37:	+0 -3 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.21	/*
2			* libev simple C++ wrapper classes
3			*
4			* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
5			* All rights reserved.
6			*
7			* Redistribution and use in source and binary forms, with or without modifica-
8			* tion, are permitted provided that the following conditions are met:
9			*
10			* 1. Redistributions of source code must retain the above copyright notice,
11			* this list of conditions and the following disclaimer.
12			*
13			* 2. Redistributions in binary form must reproduce the above copyright
14			* notice, this list of conditions and the following disclaimer in the
15			* documentation and/or other materials provided with the distribution.
16			*
17			* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18			* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19			* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20			* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21			* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22			* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23			* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24			* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25			* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26			* OF THE POSSIBILITY OF SUCH DAMAGE.
27			*
28			* Alternatively, the contents of this file may be used under the terms of
29			* the GNU General Public License ("GPL") version 2 or any later version,
30			* in which case the provisions of the GPL are applicable instead of
31			* the above. If you wish to allow the use of your version of this file
32			* only under the terms of the GPL and not to allow others to use your
33			* version of this file under the BSD license, indicate your decision
34			* by deleting the provisions above and replace them with the notice
35			* and other provisions required by the GPL. If you do not delete the
36			* provisions above, a recipient may use your version of this file under
37			* either the BSD or the GPL.
38			*/
39
40	root	1.1	#ifndef EVPP_H__
41			#define EVPP_H__
42
43	root	1.20	#ifdef EV_H
44			# include EV_H
45			#else
46	root	1.22	# include "ev.h"
47	root	1.20	#endif
48	root	1.1
49	root	1.32	#ifndef EV_USE_STDEXCEPT
50			# define EV_USE_STDEXCEPT 1
51	llucax	1.30	#endif
52
53	root	1.32	#if EV_USE_STDEXCEPT
54			# include <stdexcept>
55	llucax	1.30	#endif
56
57	root	1.1	namespace ev {
58
59	llucax	1.24	typedef ev_tstamp tstamp;
60
61			enum {
62			UNDEF = EV_UNDEF,
63			NONE = EV_NONE,
64			READ = EV_READ,
65			WRITE = EV_WRITE,
66			TIMEOUT = EV_TIMEOUT,
67			PERIODIC = EV_PERIODIC,
68			SIGNAL = EV_SIGNAL,
69			CHILD = EV_CHILD,
70			STAT = EV_STAT,
71			IDLE = EV_IDLE,
72			CHECK = EV_CHECK,
73			PREPARE = EV_PREPARE,
74			FORK = EV_FORK,
75			EMBED = EV_EMBED,
76			ERROR = EV_ERROR,
77			};
78
79	llucax	1.25	enum
80			{
81			AUTO = EVFLAG_AUTO,
82			NOENV = EVFLAG_NOENV,
83			FORKCHECK = EVFLAG_FORKCHECK,
84			SELECT = EVBACKEND_SELECT,
85			POLL = EVBACKEND_POLL,
86			EPOLL = EVBACKEND_EPOLL,
87			KQUEUE = EVBACKEND_KQUEUE,
88			DEVPOLL = EVBACKEND_DEVPOLL,
89			PORT = EVBACKEND_PORT
90			};
91
92			enum
93			{
94			NONBLOCK = EVLOOP_NONBLOCK,
95			ONESHOT = EVLOOP_ONESHOT
96			};
97
98			enum how_t
99			{
100			ONE = EVUNLOOP_ONE,
101			ALL = EVUNLOOP_ALL
102			};
103
104	root	1.32	struct bad_loop
105			#if EV_USE_STDEXCEPT
106			: std::runtime_error
107			#endif
108	llucax	1.30	{
109	root	1.32	#if EV_USE_STDEXCEPT
110	root	1.31	bad_loop ()
111	root	1.32	: std::runtime_error ("libev event loop cannot be initialized, bad value of LIBEV_FLAGS?")
112	root	1.31	{
113			}
114	root	1.32	#endif
115	llucax	1.30	};
116
117	llucax	1.28	#ifdef EV_AX
118			# undef EV_AX
119			#endif
120
121			#ifdef EV_AX_
122			# undef EV_AX_
123			#endif
124
125			#if EV_MULTIPLICITY
126			# define EV_AX raw_loop
127			# define EV_AX_ raw_loop,
128			#else
129			# define EV_AX
130			# define EV_AX_
131			#endif
132
133			struct loop_ref
134			{
135	root	1.36	loop_ref (EV_P) throw ()
136	llucax	1.28	#if EV_MULTIPLICITY
137	root	1.36	: EV_AX (EV_A)
138			#endif
139	llucax	1.33	{
140			}
141	llucax	1.28
142	root	1.32	bool operator == (const loop_ref &other) const throw ()
143	llucax	1.28	{
144			#if EV_MULTIPLICITY
145	root	1.32	return EV_AX == other.EV_AX;
146	llucax	1.28	#else
147			return true;
148			#endif
149			}
150
151	root	1.32	bool operator != (const loop_ref &other) const throw ()
152	llucax	1.28	{
153			#if EV_MULTIPLICITY
154			return ! (*this == other);
155			#else
156			return false;
157			#endif
158			}
159
160			#if EV_MULTIPLICITY
161	root	1.37	bool operator == (struct ev_loop *other) const throw ()
162	llucax	1.28	{
163			return this->EV_AX == other;
164			}
165
166	root	1.37	bool operator != (struct ev_loop *other) const throw ()
167	llucax	1.28	{
168			return ! (*this == other);
169			}
170
171	root	1.37	bool operator == (const struct ev_loop *other) const throw ()
172	llucax	1.28	{
173			return this->EV_AX == other;
174			}
175
176	root	1.37	bool operator != (const struct ev_loop *other) const throw ()
177	llucax	1.28	{
178			return (*this == other);
179			}
180
181	root	1.31	operator struct ev_loop * () const throw ()
182	llucax	1.28	{
183			return EV_AX;
184			}
185
186	root	1.31	operator const struct ev_loop * () const throw ()
187	llucax	1.28	{
188			return EV_AX;
189			}
190
191	root	1.31	bool is_default () const throw ()
192	llucax	1.28	{
193			return EV_AX == ev_default_loop (0);
194			}
195			#endif
196
197			void loop (int flags = 0)
198			{
199			ev_loop (EV_AX_ flags);
200			}
201
202	root	1.31	void unloop (how_t how = ONE) throw ()
203	llucax	1.28	{
204			ev_unloop (EV_AX_ how);
205			}
206
207	root	1.31	void post_fork () throw ()
208	llucax	1.28	{
209			#if EV_MULTIPLICITY
210			ev_loop_fork (EV_AX);
211			#else
212			ev_default_fork ();
213			#endif
214			}
215
216	root	1.31	unsigned int count () const throw ()
217	llucax	1.28	{
218			return ev_loop_count (EV_AX);
219			}
220
221	root	1.31	unsigned int backend () const throw ()
222	llucax	1.28	{
223			return ev_backend (EV_AX);
224			}
225
226	root	1.31	tstamp now () const throw ()
227	llucax	1.28	{
228			return ev_now (EV_AX);
229			}
230
231	root	1.31	void ref () throw ()
232	llucax	1.28	{
233			ev_ref (EV_AX);
234			}
235
236	root	1.31	void unref () throw ()
237	llucax	1.28	{
238			ev_unref (EV_AX);
239			}
240
241	root	1.31	void set_io_collect_interval (tstamp interval) throw ()
242	llucax	1.28	{
243			ev_set_io_collect_interval (EV_AX_ interval);
244			}
245
246	root	1.31	void set_timeout_collect_interval (tstamp interval) throw ()
247	llucax	1.28	{
248			ev_set_timeout_collect_interval (EV_AX_ interval);
249			}
250
251			// function callback
252	root	1.31	void once (int fd, int events, tstamp timeout, void (cb)(int, void ), void* arg = 0) throw ()
253	llucax	1.28	{
254			ev_once (EV_AX_ fd, events, timeout, cb, arg);
255			}
256
257			// method callback
258			template<class K, void (K::*method)(int)>
259	root	1.31	void once (int fd, int events, tstamp timeout, K *object) throw ()
260	llucax	1.28	{
261			once (fd, events, timeout, method_thunk<K, method>, object);
262			}
263
264			template<class K, void (K::*method)(int)>
265			static void method_thunk (int revents, void* arg)
266			{
267			K obj = static_cast<K >(arg);
268			(obj->*method) (revents);
269			}
270
271			// const method callback
272			template<class K, void (K::*method)(int) const>
273	root	1.31	void once (int fd, int events, tstamp timeout, const K *object) throw ()
274	llucax	1.28	{
275			once (fd, events, timeout, const_method_thunk<K, method>, object);
276			}
277
278			template<class K, void (K::*method)(int) const>
279			static void const_method_thunk (int revents, void* arg)
280			{
281			K obj = static_cast<K >(arg);
282			(obj->*method) (revents);
283			}
284
285			// simple method callback
286			template<class K, void (K::*method)()>
287	root	1.31	void once (int fd, int events, tstamp timeout, K *object) throw ()
288	llucax	1.28	{
289			once (fd, events, timeout, method_noargs_thunk<K, method>, object);
290			}
291
292			template<class K, void (K::*method)()>
293			static void method_noargs_thunk (int revents, void* arg)
294			{
295			K obj = static_cast<K >(arg);
296			(obj->*method) ();
297			}
298
299			// simpler function callback
300			template<void (*cb)(int)>
301	root	1.31	void once (int fd, int events, tstamp timeout) throw ()
302	llucax	1.28	{
303			once (fd, events, timeout, simpler_func_thunk<cb>);
304			}
305
306			template<void (*cb)(int)>
307			static void simpler_func_thunk (int revents, void* arg)
308			{
309			(*cb) (revents);
310			}
311
312			// simplest function callback
313			template<void (*cb)()>
314	root	1.31	void once (int fd, int events, tstamp timeout) throw ()
315	llucax	1.28	{
316			once (fd, events, timeout, simplest_func_thunk<cb>);
317			}
318
319			template<void (*cb)()>
320			static void simplest_func_thunk (int revents, void* arg)
321			{
322			(*cb) ();
323			}
324
325	root	1.31	void feed_fd_event (int fd, int revents) throw ()
326	llucax	1.28	{
327			ev_feed_fd_event (EV_AX_ fd, revents);
328			}
329
330	root	1.31	void feed_signal_event (int signum) throw ()
331	llucax	1.28	{
332			ev_feed_signal_event (EV_AX_ signum);
333			}
334
335			#if EV_MULTIPLICITY
336			struct ev_loop* EV_AX;
337			#endif
338
339			};
340
341			#if EV_MULTIPLICITY
342	root	1.36	struct dynamic_loop : loop_ref
343	llucax	1.28	{
344
345	llucax	1.34	dynamic_loop (unsigned int flags = AUTO) throw (bad_loop)
346	root	1.36	: loop_ref (ev_loop_new (flags))
347	llucax	1.28	{
348	root	1.36	if (!EV_AX)
349			throw bad_loop ();
350	llucax	1.28	}
351
352	root	1.31	~dynamic_loop () throw ()
353	llucax	1.28	{
354			ev_loop_destroy (EV_AX);
355			EV_AX = 0;
356			}
357
358			private:
359
360			dynamic_loop (const dynamic_loop &);
361
362			dynamic_loop & operator= (const dynamic_loop &);
363
364			};
365			#endif
366
367	root	1.36	struct default_loop : loop_ref
368	llucax	1.28	{
369	root	1.32	default_loop (unsigned int flags = AUTO) throw (bad_loop)
370	llucax	1.28	#if EV_MULTIPLICITY
371	root	1.32	: loop_ref (ev_default_loop (flags))
372			#endif
373	llucax	1.28	{
374	root	1.36	if (
375			#if EV_MULTIPLICITY
376			!EV_AX
377			#else
378			!ev_default_loop (flags)
379	root	1.32	#endif
380	root	1.36	)
381			throw bad_loop ();
382	llucax	1.28	}
383
384	root	1.31	~default_loop () throw ()
385	llucax	1.28	{
386			ev_default_destroy ();
387			}
388
389			private:
390			default_loop (const default_loop &);
391	root	1.32	default_loop &operator = (const default_loop &);
392	llucax	1.28	};
393
394	root	1.31	inline loop_ref get_default_loop () throw ()
395	llucax	1.28	{
396			#if EV_MULTIPLICITY
397			return ev_default_loop (0);
398			#else
399			return loop_ref ();
400			#endif
401			}
402
403			#undef EV_AX
404			#undef EV_AX_
405
406			#undef EV_PX
407			#undef EV_PX_
408			#if EV_MULTIPLICITY
409			# define EV_PX loop_ref EV_A
410			# define EV_PX_ loop_ref EV_A_
411			#else
412			# define EV_PX
413			# define EV_PX_
414			#endif
415
416	root	1.13	template<class ev_watcher, class watcher>
417			struct base : ev_watcher
418	root	1.1	{
419	root	1.13	#if EV_MULTIPLICITY
420	llucax	1.28	EV_PX;
421	root	1.1
422	root	1.31	void set (EV_PX) throw ()
423	root	1.13	{
424			this->EV_A = EV_A;
425			}
426			#endif
427	root	1.1
428	root	1.31	base (EV_PX) throw ()
429	llucax	1.28	#if EV_MULTIPLICITY
430			: EV_A (EV_A)
431			#endif
432	root	1.13	{
433			ev_init (this, 0);
434			}
435
436	root	1.31	void set_ (void data, void (cb)(EV_P_ ev_watcher *w, int revents)) throw ()
437	root	1.13	{
438	root	1.17	this->data = data;
439	root	1.18	ev_set_cb (static_cast<ev_watcher *>(this), cb);
440	root	1.13	}
441
442	root	1.19	// method callback
443	root	1.13	template<class K, void (K::*method)(watcher &w, int)>
444	root	1.31	void set (K *object) throw ()
445	root	1.13	{
446			set_ (object, method_thunk<K, method>);
447			}
448
449			template<class K, void (K::*method)(watcher &w, int)>
450	root	1.18	static void method_thunk (EV_P_ ev_watcher *w, int revents)
451	root	1.13	{
452	root	1.17	K obj = static_cast<K >(w->data);
453	root	1.18	(obj->method) (static_cast<watcher *>(w), revents);
454	root	1.13	}
455
456	root	1.19	// const method callback
457	root	1.13	template<class K, void (K::*method)(watcher &w, int) const>
458	root	1.31	void set (const K *object) throw ()
459	root	1.13	{
460			set_ (object, const_method_thunk<K, method>);
461			}
462
463			template<class K, void (K::*method)(watcher &w, int) const>
464	root	1.18	static void const_method_thunk (EV_P_ ev_watcher *w, int revents)
465	root	1.13	{
466	root	1.17	K obj = static_cast<K >(w->data);
467	root	1.18	(static_cast<K >(w->data)->method) (static_cast<watcher >(w), revents);
468	root	1.13	}
469
470	root	1.19	// function callback
471	root	1.17	template<void (*function)(watcher &w, int)>
472	root	1.31	void set (void *data = 0) throw ()
473	root	1.13	{
474	root	1.16	set_ (data, function_thunk<function>);
475	root	1.13	}
476
477			template<void (*function)(watcher &w, int)>
478	root	1.18	static void function_thunk (EV_P_ ev_watcher *w, int revents)
479	root	1.13	{
480	root	1.18	function (static_cast<watcher >(w), revents);
481	root	1.13	}
482
483	root	1.19	// simple callback
484			template<class K, void (K::*method)()>
485	root	1.31	void set (K *object) throw ()
486	root	1.19	{
487			set_ (object, method_noargs_thunk<K, method>);
488			}
489
490			template<class K, void (K::*method)()>
491			static void method_noargs_thunk (EV_P_ ev_watcher *w, int revents)
492			{
493			K obj = static_cast<K >(w->data);
494			(obj->*method) ();
495			}
496
497	root	1.13	void operator ()(int events = EV_UNDEF)
498			{
499	root	1.14	return ev_cb (static_cast<ev_watcher *>(this))
500			(static_cast<ev_watcher *>(this), events);
501	root	1.13	}
502
503	root	1.31	bool is_active () const throw ()
504	root	1.1	{
505	root	1.13	return ev_is_active (static_cast<const ev_watcher *>(this));
506	root	1.1	}
507
508	root	1.31	bool is_pending () const throw ()
509	root	1.1	{
510	root	1.13	return ev_is_pending (static_cast<const ev_watcher *>(this));
511	root	1.1	}
512	llucax	1.27
513	root	1.31	void feed_event (int revents) throw ()
514	llucax	1.27	{
515			ev_feed_event (EV_A_ static_cast<const ev_watcher *>(this), revents);
516			}
517	root	1.1	};
518
519	root	1.31	inline tstamp now () throw ()
520	llucax	1.29	{
521			return ev_time ();
522			}
523
524	root	1.31	inline void delay (tstamp interval) throw ()
525	llucax	1.26	{
526			ev_sleep (interval);
527			}
528
529	root	1.31	inline int version_major () throw ()
530	llucax	1.26	{
531			return ev_version_major ();
532			}
533
534	root	1.31	inline int version_minor () throw ()
535	llucax	1.26	{
536			return ev_version_minor ();
537			}
538
539	root	1.31	inline unsigned int supported_backends () throw ()
540	llucax	1.26	{
541			return ev_supported_backends ();
542			}
543
544	root	1.31	inline unsigned int recommended_backends () throw ()
545	llucax	1.26	{
546			return ev_recommended_backends ();
547			}
548
549	root	1.31	inline unsigned int embeddable_backends () throw ()
550	llucax	1.26	{
551			return ev_embeddable_backends ();
552			}
553
554	root	1.31	inline void set_allocator (void (cb)(void *ptr, long size)) throw ()
555	llucax	1.26	{
556			ev_set_allocator (cb);
557			}
558
559	root	1.31	inline void set_syserr_cb (void (cb)(const char msg)) throw ()
560	llucax	1.26	{
561			ev_set_syserr_cb (cb);
562			}
563
564	root	1.1	#if EV_MULTIPLICITY
565	llucax	1.28	#define EV_CONSTRUCT(cppstem,cstem) \
566	root	1.31	(EV_PX = get_default_loop ()) throw () \
567	llucax	1.28	: base<ev_ ## cstem, cppstem> (EV_A) \
568	root	1.1	{ \
569	root	1.13	}
570	root	1.1	#else
571	llucax	1.28	#define EV_CONSTRUCT(cppstem,cstem) \
572	root	1.31	() throw () \
573	root	1.13	{ \
574			}
575	root	1.1	#endif
576
577			/* using a template here would require quite a bit more lines,
578			* so a macro solution was chosen */
579	root	1.4	#define EV_BEGIN_WATCHER(cppstem,cstem) \
580	root	1.1	\
581	root	1.13	struct cppstem : base<ev_ ## cstem, cppstem> \
582	root	1.1	{ \
583	root	1.31	void start () throw () \
584	root	1.1	{ \
585			ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this)); \
586			} \
587			\
588	root	1.31	void stop () throw () \
589	root	1.1	{ \
590			ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this)); \
591			} \
592			\
593	llucax	1.28	cppstem EV_CONSTRUCT(cppstem,cstem) \
594	root	1.1	\
595	root	1.31	~cppstem () throw () \
596	root	1.3	{ \
597			stop (); \
598			} \
599			\
600	root	1.13	using base<ev_ ## cstem, cppstem>::set; \
601			\
602	root	1.1	private: \
603			\
604	llucax	1.23	cppstem (const cppstem &o); \
605	root	1.6	\
606	llucax	1.23	cppstem & operator =(const cppstem &o); \
607	root	1.1	\
608			public:
609
610	root	1.4	#define EV_END_WATCHER(cppstem,cstem) \
611	root	1.6	};
612	root	1.4
613			EV_BEGIN_WATCHER (io, io)
614	root	1.31	void set (int fd, int events) throw ()
615	root	1.1	{
616			int active = is_active ();
617			if (active) stop ();
618			ev_io_set (static_cast<ev_io *>(this), fd, events);
619			if (active) start ();
620			}
621
622	root	1.31	void set (int events) throw ()
623	root	1.1	{
624			int active = is_active ();
625			if (active) stop ();
626			ev_io_set (static_cast<ev_io *>(this), fd, events);
627			if (active) start ();
628			}
629
630	root	1.31	void start (int fd, int events) throw ()
631	root	1.1	{
632			set (fd, events);
633			start ();
634			}
635	root	1.4	EV_END_WATCHER (io, io)
636	root	1.1
637	root	1.4	EV_BEGIN_WATCHER (timer, timer)
638	root	1.31	void set (ev_tstamp after, ev_tstamp repeat = 0.) throw ()
639	root	1.1	{
640			int active = is_active ();
641			if (active) stop ();
642			ev_timer_set (static_cast<ev_timer *>(this), after, repeat);
643			if (active) start ();
644			}
645
646	root	1.31	void start (ev_tstamp after, ev_tstamp repeat = 0.) throw ()
647	root	1.1	{
648			set (after, repeat);
649			start ();
650			}
651
652	root	1.31	void again () throw ()
653	root	1.1	{
654			ev_timer_again (EV_A_ static_cast<ev_timer *>(this));
655			}
656	root	1.4	EV_END_WATCHER (timer, timer)
657	root	1.1
658	root	1.8	#if EV_PERIODIC_ENABLE
659	root	1.4	EV_BEGIN_WATCHER (periodic, periodic)
660	root	1.31	void set (ev_tstamp at, ev_tstamp interval = 0.) throw ()
661	root	1.1	{
662			int active = is_active ();
663			if (active) stop ();
664			ev_periodic_set (static_cast<ev_periodic *>(this), at, interval, 0);
665			if (active) start ();
666			}
667
668	root	1.31	void start (ev_tstamp at, ev_tstamp interval = 0.) throw ()
669	root	1.1	{
670			set (at, interval);
671			start ();
672			}
673
674	root	1.31	void again () throw ()
675	root	1.1	{
676			ev_periodic_again (EV_A_ static_cast<ev_periodic *>(this));
677			}
678	root	1.4	EV_END_WATCHER (periodic, periodic)
679	root	1.3	#endif
680	root	1.1
681	root	1.4	EV_BEGIN_WATCHER (sig, signal)
682	root	1.31	void set (int signum) throw ()
683	root	1.1	{
684			int active = is_active ();
685			if (active) stop ();
686			ev_signal_set (static_cast<ev_signal *>(this), signum);
687			if (active) start ();
688			}
689
690	root	1.31	void start (int signum) throw ()
691	root	1.1	{
692			set (signum);
693			start ();
694			}
695	root	1.4	EV_END_WATCHER (sig, signal)
696	root	1.1
697	root	1.4	EV_BEGIN_WATCHER (child, child)
698	root	1.37	void set (int pid, int trace = 0) throw ()
699	root	1.1	{
700			int active = is_active ();
701			if (active) stop ();
702	root	1.37	ev_child_set (static_cast<ev_child *>(this), pid, trace);
703	root	1.1	if (active) start ();
704			}
705
706	root	1.37	void start (int pid, int trace = 0) throw ()
707	root	1.1	{
708	root	1.37	set (pid, trace);
709	root	1.1	start ();
710			}
711	root	1.4	EV_END_WATCHER (child, child)
712	root	1.1
713	root	1.8	#if EV_STAT_ENABLE
714			EV_BEGIN_WATCHER (stat, stat)
715	root	1.31	void set (const char *path, ev_tstamp interval = 0.) throw ()
716	root	1.8	{
717			int active = is_active ();
718			if (active) stop ();
719			ev_stat_set (static_cast<ev_stat *>(this), path, interval);
720			if (active) start ();
721			}
722
723	root	1.31	void start (const char *path, ev_tstamp interval = 0.) throw ()
724	root	1.8	{
725	root	1.12	stop ();
726	root	1.8	set (path, interval);
727			start ();
728			}
729
730	root	1.31	void update () throw ()
731	root	1.8	{
732			ev_stat_stat (EV_A_ static_cast<ev_stat *>(this));
733			}
734			EV_END_WATCHER (stat, stat)
735			#endif
736
737			EV_BEGIN_WATCHER (idle, idle)
738	root	1.31	void set () throw () { }
739	root	1.8	EV_END_WATCHER (idle, idle)
740	root	1.7
741	root	1.8	EV_BEGIN_WATCHER (prepare, prepare)
742	root	1.31	void set () throw () { }
743	root	1.8	EV_END_WATCHER (prepare, prepare)
744
745			EV_BEGIN_WATCHER (check, check)
746	root	1.31	void set () throw () { }
747	root	1.8	EV_END_WATCHER (check, check)
748
749			#if EV_EMBED_ENABLE
750	root	1.7	EV_BEGIN_WATCHER (embed, embed)
751	root	1.31	void start (struct ev_loop *embedded_loop) throw ()
752	root	1.7	{
753	root	1.12	stop ();
754			ev_embed_set (static_cast<ev_embed *>(this), embedded_loop);
755	root	1.7	start ();
756			}
757
758			void sweep ()
759			{
760			ev_embed_sweep (EV_A_ static_cast<ev_embed *>(this));
761			}
762			EV_END_WATCHER (embed, embed)
763			#endif
764
765	root	1.10	#if EV_FORK_ENABLE
766			EV_BEGIN_WATCHER (fork, fork)
767	root	1.31	void set () throw () { }
768	root	1.10	EV_END_WATCHER (fork, fork)
769			#endif
770
771	llucax	1.28	#undef EV_PX
772			#undef EV_PX_
773	root	1.1	#undef EV_CONSTRUCT
774	root	1.4	#undef EV_BEGIN_WATCHER
775	root	1.7	#undef EV_END_WATCHER
776	root	1.1	}
777
778			#endif
779