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:	1.43
Committed:	Wed Nov 5 14:36:18 2008 UTC (15 years, 6 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-3_49
Changes since 1.42:	+2 -1 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.21	/*
2			* libev simple C++ wrapper classes
3			*
4	root	1.40	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5	root	1.21	* All rights reserved.
6			*
7			* Redistribution and use in source and binary forms, with or without modifica-
8			* tion, are permitted provided that the following conditions are met:
9			*
10			* 1. Redistributions of source code must retain the above copyright notice,
11			* this list of conditions and the following disclaimer.
12			*
13			* 2. Redistributions in binary form must reproduce the above copyright
14			* notice, this list of conditions and the following disclaimer in the
15			* documentation and/or other materials provided with the distribution.
16			*
17			* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18			* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19			* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20			* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21			* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22			* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23			* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24			* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25			* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26			* OF THE POSSIBILITY OF SUCH DAMAGE.
27			*
28			* Alternatively, the contents of this file may be used under the terms of
29			* the GNU General Public License ("GPL") version 2 or any later version,
30			* in which case the provisions of the GPL are applicable instead of
31			* the above. If you wish to allow the use of your version of this file
32			* only under the terms of the GPL and not to allow others to use your
33			* version of this file under the BSD license, indicate your decision
34			* by deleting the provisions above and replace them with the notice
35			* and other provisions required by the GPL. If you do not delete the
36			* provisions above, a recipient may use your version of this file under
37			* either the BSD or the GPL.
38			*/
39
40	root	1.1	#ifndef EVPP_H__
41			#define EVPP_H__
42
43	root	1.20	#ifdef EV_H
44			# include EV_H
45			#else
46	root	1.22	# include "ev.h"
47	root	1.20	#endif
48	root	1.1
49	root	1.32	#ifndef EV_USE_STDEXCEPT
50			# define EV_USE_STDEXCEPT 1
51	llucax	1.30	#endif
52
53	root	1.32	#if EV_USE_STDEXCEPT
54			# include <stdexcept>
55	llucax	1.30	#endif
56
57	root	1.1	namespace ev {
58
59	llucax	1.24	typedef ev_tstamp tstamp;
60
61	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	1.37	bool operator == (struct ev_loop *other) const throw ()
166	llucax	1.28	{
167			return this->EV_AX == other;
168			}
169
170	root	1.37	bool operator != (struct ev_loop *other) const throw ()
171	llucax	1.28	{
172			return ! (*this == other);
173			}
174
175	root	1.37	bool operator == (const struct ev_loop *other) const throw ()
176	llucax	1.28	{
177			return this->EV_AX == other;
178			}
179
180	root	1.37	bool operator != (const struct ev_loop *other) const throw ()
181	llucax	1.28	{
182			return (*this == other);
183			}
184
185	root	1.31	operator struct ev_loop * () const throw ()
186	llucax	1.28	{
187			return EV_AX;
188			}
189
190	root	1.31	operator const struct ev_loop * () const throw ()
191	llucax	1.28	{
192			return EV_AX;
193			}
194
195	root	1.31	bool is_default () const throw ()
196	llucax	1.28	{
197			return EV_AX == ev_default_loop (0);
198			}
199			#endif
200
201			void loop (int flags = 0)
202			{
203			ev_loop (EV_AX_ flags);
204			}
205
206	root	1.31	void unloop (how_t how = ONE) throw ()
207	llucax	1.28	{
208			ev_unloop (EV_AX_ how);
209			}
210
211	root	1.31	void post_fork () throw ()
212	llucax	1.28	{
213			#if EV_MULTIPLICITY
214			ev_loop_fork (EV_AX);
215			#else
216			ev_default_fork ();
217			#endif
218			}
219
220	root	1.31	unsigned int count () const throw ()
221	llucax	1.28	{
222			return ev_loop_count (EV_AX);
223			}
224
225	root	1.31	unsigned int backend () const throw ()
226	llucax	1.28	{
227			return ev_backend (EV_AX);
228			}
229
230	root	1.31	tstamp now () const throw ()
231	llucax	1.28	{
232			return ev_now (EV_AX);
233			}
234
235	root	1.31	void ref () throw ()
236	llucax	1.28	{
237			ev_ref (EV_AX);
238			}
239
240	root	1.31	void unref () throw ()
241	llucax	1.28	{
242			ev_unref (EV_AX);
243			}
244
245	root	1.31	void set_io_collect_interval (tstamp interval) throw ()
246	llucax	1.28	{
247			ev_set_io_collect_interval (EV_AX_ interval);
248			}
249
250	root	1.31	void set_timeout_collect_interval (tstamp interval) throw ()
251	llucax	1.28	{
252			ev_set_timeout_collect_interval (EV_AX_ interval);
253			}
254
255			// function callback
256	root	1.31	void once (int fd, int events, tstamp timeout, void (cb)(int, void ), void* arg = 0) throw ()
257	llucax	1.28	{
258			ev_once (EV_AX_ fd, events, timeout, cb, arg);
259			}
260
261			// method callback
262			template<class K, void (K::*method)(int)>
263	root	1.31	void once (int fd, int events, tstamp timeout, K *object) throw ()
264	llucax	1.28	{
265			once (fd, events, timeout, method_thunk<K, method>, object);
266			}
267
268			template<class K, void (K::*method)(int)>
269			static void method_thunk (int revents, void* arg)
270			{
271			K obj = static_cast<K >(arg);
272			(obj->*method) (revents);
273			}
274
275			// const method callback
276			template<class K, void (K::*method)(int) const>
277	root	1.31	void once (int fd, int events, tstamp timeout, const K *object) throw ()
278	llucax	1.28	{
279			once (fd, events, timeout, const_method_thunk<K, method>, object);
280			}
281
282			template<class K, void (K::*method)(int) const>
283			static void const_method_thunk (int revents, void* arg)
284			{
285			K obj = static_cast<K >(arg);
286			(obj->*method) (revents);
287			}
288
289			// simple method callback
290			template<class K, void (K::*method)()>
291	root	1.31	void once (int fd, int events, tstamp timeout, K *object) throw ()
292	llucax	1.28	{
293			once (fd, events, timeout, method_noargs_thunk<K, method>, object);
294			}
295
296			template<class K, void (K::*method)()>
297			static void method_noargs_thunk (int revents, void* arg)
298			{
299			K obj = static_cast<K >(arg);
300			(obj->*method) ();
301			}
302
303			// simpler function callback
304			template<void (*cb)(int)>
305	root	1.31	void once (int fd, int events, tstamp timeout) throw ()
306	llucax	1.28	{
307			once (fd, events, timeout, simpler_func_thunk<cb>);
308			}
309
310			template<void (*cb)(int)>
311			static void simpler_func_thunk (int revents, void* arg)
312			{
313			(*cb) (revents);
314			}
315
316			// simplest function callback
317			template<void (*cb)()>
318	root	1.31	void once (int fd, int events, tstamp timeout) throw ()
319	llucax	1.28	{
320			once (fd, events, timeout, simplest_func_thunk<cb>);
321			}
322
323			template<void (*cb)()>
324			static void simplest_func_thunk (int revents, void* arg)
325			{
326			(*cb) ();
327			}
328
329	root	1.31	void feed_fd_event (int fd, int revents) throw ()
330	llucax	1.28	{
331			ev_feed_fd_event (EV_AX_ fd, revents);
332			}
333
334	root	1.31	void feed_signal_event (int signum) throw ()
335	llucax	1.28	{
336			ev_feed_signal_event (EV_AX_ signum);
337			}
338
339			#if EV_MULTIPLICITY
340			struct ev_loop* EV_AX;
341			#endif
342
343			};
344
345			#if EV_MULTIPLICITY
346	root	1.36	struct dynamic_loop : loop_ref
347	llucax	1.28	{
348
349	llucax	1.34	dynamic_loop (unsigned int flags = AUTO) throw (bad_loop)
350	root	1.36	: loop_ref (ev_loop_new (flags))
351	llucax	1.28	{
352	root	1.36	if (!EV_AX)
353			throw bad_loop ();
354	llucax	1.28	}
355
356	root	1.31	~dynamic_loop () throw ()
357	llucax	1.28	{
358			ev_loop_destroy (EV_AX);
359			EV_AX = 0;
360			}
361
362			private:
363
364			dynamic_loop (const dynamic_loop &);
365
366			dynamic_loop & operator= (const dynamic_loop &);
367
368			};
369			#endif
370
371	root	1.36	struct default_loop : loop_ref
372	llucax	1.28	{
373	root	1.32	default_loop (unsigned int flags = AUTO) throw (bad_loop)
374	llucax	1.28	#if EV_MULTIPLICITY
375	root	1.32	: loop_ref (ev_default_loop (flags))
376			#endif
377	llucax	1.28	{
378	root	1.36	if (
379			#if EV_MULTIPLICITY
380			!EV_AX
381			#else
382			!ev_default_loop (flags)
383	root	1.32	#endif
384	root	1.36	)
385			throw bad_loop ();
386	llucax	1.28	}
387
388	root	1.31	~default_loop () throw ()
389	llucax	1.28	{
390			ev_default_destroy ();
391			}
392
393			private:
394			default_loop (const default_loop &);
395	root	1.32	default_loop &operator = (const default_loop &);
396	llucax	1.28	};
397
398	root	1.31	inline loop_ref get_default_loop () throw ()
399	llucax	1.28	{
400			#if EV_MULTIPLICITY
401			return ev_default_loop (0);
402			#else
403			return loop_ref ();
404			#endif
405			}
406
407			#undef EV_AX
408			#undef EV_AX_
409
410			#undef EV_PX
411			#undef EV_PX_
412			#if EV_MULTIPLICITY
413			# define EV_PX loop_ref EV_A
414			# define EV_PX_ loop_ref EV_A_
415			#else
416			# define EV_PX
417			# define EV_PX_
418			#endif
419
420	root	1.13	template<class ev_watcher, class watcher>
421			struct base : ev_watcher
422	root	1.1	{
423	root	1.13	#if EV_MULTIPLICITY
424	llucax	1.28	EV_PX;
425	root	1.1
426	root	1.31	void set (EV_PX) throw ()
427	root	1.13	{
428			this->EV_A = EV_A;
429			}
430			#endif
431	root	1.1
432	root	1.31	base (EV_PX) throw ()
433	llucax	1.28	#if EV_MULTIPLICITY
434			: EV_A (EV_A)
435			#endif
436	root	1.13	{
437			ev_init (this, 0);
438			}
439
440	root	1.31	void set_ (void data, void (cb)(EV_P_ ev_watcher *w, int revents)) throw ()
441	root	1.13	{
442	root	1.17	this->data = data;
443	root	1.18	ev_set_cb (static_cast<ev_watcher *>(this), cb);
444	root	1.13	}
445
446	root	1.19	// method callback
447	root	1.13	template<class K, void (K::*method)(watcher &w, int)>
448	root	1.31	void set (K *object) throw ()
449	root	1.13	{
450			set_ (object, method_thunk<K, method>);
451			}
452
453			template<class K, void (K::*method)(watcher &w, int)>
454	root	1.18	static void method_thunk (EV_P_ ev_watcher *w, int revents)
455	root	1.13	{
456	root	1.17	K obj = static_cast<K >(w->data);
457	root	1.18	(obj->method) (static_cast<watcher *>(w), revents);
458	root	1.13	}
459
460	root	1.19	// const method callback
461	root	1.13	template<class K, void (K::*method)(watcher &w, int) const>
462	root	1.31	void set (const K *object) throw ()
463	root	1.13	{
464			set_ (object, const_method_thunk<K, method>);
465			}
466
467			template<class K, void (K::*method)(watcher &w, int) const>
468	root	1.18	static void const_method_thunk (EV_P_ ev_watcher *w, int revents)
469	root	1.13	{
470	root	1.17	K obj = static_cast<K >(w->data);
471	root	1.18	(static_cast<K >(w->data)->method) (static_cast<watcher >(w), revents);
472	root	1.13	}
473
474	root	1.19	// function callback
475	root	1.17	template<void (*function)(watcher &w, int)>
476	root	1.31	void set (void *data = 0) throw ()
477	root	1.13	{
478	root	1.16	set_ (data, function_thunk<function>);
479	root	1.13	}
480
481			template<void (*function)(watcher &w, int)>
482	root	1.18	static void function_thunk (EV_P_ ev_watcher *w, int revents)
483	root	1.13	{
484	root	1.18	function (static_cast<watcher >(w), revents);
485	root	1.13	}
486
487	root	1.19	// simple callback
488			template<class K, void (K::*method)()>
489	root	1.31	void set (K *object) throw ()
490	root	1.19	{
491			set_ (object, method_noargs_thunk<K, method>);
492			}
493
494			template<class K, void (K::*method)()>
495			static void method_noargs_thunk (EV_P_ ev_watcher *w, int revents)
496			{
497			K obj = static_cast<K >(w->data);
498			(obj->*method) ();
499			}
500
501	root	1.13	void operator ()(int events = EV_UNDEF)
502			{
503	root	1.14	return ev_cb (static_cast<ev_watcher *>(this))
504			(static_cast<ev_watcher *>(this), events);
505	root	1.13	}
506
507	root	1.31	bool is_active () const throw ()
508	root	1.1	{
509	root	1.13	return ev_is_active (static_cast<const ev_watcher *>(this));
510	root	1.1	}
511
512	root	1.31	bool is_pending () const throw ()
513	root	1.1	{
514	root	1.13	return ev_is_pending (static_cast<const ev_watcher *>(this));
515	root	1.1	}
516	llucax	1.27
517	root	1.31	void feed_event (int revents) throw ()
518	llucax	1.27	{
519			ev_feed_event (EV_A_ static_cast<const ev_watcher *>(this), revents);
520			}
521	root	1.1	};
522
523	root	1.31	inline tstamp now () throw ()
524	llucax	1.29	{
525			return ev_time ();
526			}
527
528	root	1.31	inline void delay (tstamp interval) throw ()
529	llucax	1.26	{
530			ev_sleep (interval);
531			}
532
533	root	1.31	inline int version_major () throw ()
534	llucax	1.26	{
535			return ev_version_major ();
536			}
537
538	root	1.31	inline int version_minor () throw ()
539	llucax	1.26	{
540			return ev_version_minor ();
541			}
542
543	root	1.31	inline unsigned int supported_backends () throw ()
544	llucax	1.26	{
545			return ev_supported_backends ();
546			}
547
548	root	1.31	inline unsigned int recommended_backends () throw ()
549	llucax	1.26	{
550			return ev_recommended_backends ();
551			}
552
553	root	1.31	inline unsigned int embeddable_backends () throw ()
554	llucax	1.26	{
555			return ev_embeddable_backends ();
556			}
557
558	root	1.31	inline void set_allocator (void (cb)(void *ptr, long size)) throw ()
559	llucax	1.26	{
560			ev_set_allocator (cb);
561			}
562
563	root	1.31	inline void set_syserr_cb (void (cb)(const char msg)) throw ()
564	llucax	1.26	{
565			ev_set_syserr_cb (cb);
566			}
567
568	root	1.1	#if EV_MULTIPLICITY
569	llucax	1.28	#define EV_CONSTRUCT(cppstem,cstem) \
570	root	1.39	(EV_PX = get_default_loop ()) throw () \
571	llucax	1.28	: base<ev_ ## cstem, cppstem> (EV_A) \
572	root	1.1	{ \
573	root	1.13	}
574	root	1.1	#else
575	llucax	1.28	#define EV_CONSTRUCT(cppstem,cstem) \
576	root	1.39	() throw () \
577	root	1.13	{ \
578			}
579	root	1.1	#endif
580
581			/* using a template here would require quite a bit more lines,
582			* so a macro solution was chosen */
583	root	1.4	#define EV_BEGIN_WATCHER(cppstem,cstem) \
584	root	1.1	\
585	root	1.13	struct cppstem : base<ev_ ## cstem, cppstem> \
586	root	1.1	{ \
587	root	1.39	void start () throw () \
588	root	1.1	{ \
589			ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this)); \
590			} \
591			\
592	root	1.39	void stop () throw () \
593	root	1.1	{ \
594			ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this)); \
595			} \
596			\
597	llucax	1.28	cppstem EV_CONSTRUCT(cppstem,cstem) \
598	root	1.1	\
599	root	1.39	~cppstem () throw () \
600	root	1.3	{ \
601			stop (); \
602			} \
603			\
604	root	1.13	using base<ev_ ## cstem, cppstem>::set; \
605			\
606	root	1.1	private: \
607			\
608	llucax	1.23	cppstem (const cppstem &o); \
609	root	1.6	\
610	root	1.39	cppstem &operator =(const cppstem &o); \
611	root	1.1	\
612			public:
613
614	root	1.4	#define EV_END_WATCHER(cppstem,cstem) \
615	root	1.6	};
616	root	1.4
617			EV_BEGIN_WATCHER (io, io)
618	root	1.31	void set (int fd, int events) throw ()
619	root	1.1	{
620			int active = is_active ();
621			if (active) stop ();
622			ev_io_set (static_cast<ev_io *>(this), fd, events);
623			if (active) start ();
624			}
625
626	root	1.31	void set (int events) throw ()
627	root	1.1	{
628			int active = is_active ();
629			if (active) stop ();
630			ev_io_set (static_cast<ev_io *>(this), fd, events);
631			if (active) start ();
632			}
633
634	root	1.31	void start (int fd, int events) throw ()
635	root	1.1	{
636			set (fd, events);
637			start ();
638			}
639	root	1.4	EV_END_WATCHER (io, io)
640	root	1.1
641	root	1.4	EV_BEGIN_WATCHER (timer, timer)
642	root	1.31	void set (ev_tstamp after, ev_tstamp repeat = 0.) throw ()
643	root	1.1	{
644			int active = is_active ();
645			if (active) stop ();
646			ev_timer_set (static_cast<ev_timer *>(this), after, repeat);
647			if (active) start ();
648			}
649
650	root	1.31	void start (ev_tstamp after, ev_tstamp repeat = 0.) throw ()
651	root	1.1	{
652			set (after, repeat);
653			start ();
654			}
655
656	root	1.31	void again () throw ()
657	root	1.1	{
658			ev_timer_again (EV_A_ static_cast<ev_timer *>(this));
659			}
660	root	1.4	EV_END_WATCHER (timer, timer)
661	root	1.1
662	root	1.8	#if EV_PERIODIC_ENABLE
663	root	1.4	EV_BEGIN_WATCHER (periodic, periodic)
664	root	1.31	void set (ev_tstamp at, ev_tstamp interval = 0.) throw ()
665	root	1.1	{
666			int active = is_active ();
667			if (active) stop ();
668			ev_periodic_set (static_cast<ev_periodic *>(this), at, interval, 0);
669			if (active) start ();
670			}
671
672	root	1.31	void start (ev_tstamp at, ev_tstamp interval = 0.) throw ()
673	root	1.1	{
674			set (at, interval);
675			start ();
676			}
677
678	root	1.31	void again () throw ()
679	root	1.1	{
680			ev_periodic_again (EV_A_ static_cast<ev_periodic *>(this));
681			}
682	root	1.4	EV_END_WATCHER (periodic, periodic)
683	root	1.3	#endif
684	root	1.1
685	root	1.4	EV_BEGIN_WATCHER (sig, signal)
686	root	1.31	void set (int signum) throw ()
687	root	1.1	{
688			int active = is_active ();
689			if (active) stop ();
690			ev_signal_set (static_cast<ev_signal *>(this), signum);
691			if (active) start ();
692			}
693
694	root	1.31	void start (int signum) throw ()
695	root	1.1	{
696			set (signum);
697			start ();
698			}
699	root	1.4	EV_END_WATCHER (sig, signal)
700	root	1.1
701	root	1.4	EV_BEGIN_WATCHER (child, child)
702	root	1.37	void set (int pid, int trace = 0) throw ()
703	root	1.1	{
704			int active = is_active ();
705			if (active) stop ();
706	root	1.37	ev_child_set (static_cast<ev_child *>(this), pid, trace);
707	root	1.1	if (active) start ();
708			}
709
710	root	1.37	void start (int pid, int trace = 0) throw ()
711	root	1.1	{
712	root	1.37	set (pid, trace);
713	root	1.1	start ();
714			}
715	root	1.4	EV_END_WATCHER (child, child)
716	root	1.1
717	root	1.8	#if EV_STAT_ENABLE
718			EV_BEGIN_WATCHER (stat, stat)
719	root	1.31	void set (const char *path, ev_tstamp interval = 0.) throw ()
720	root	1.8	{
721			int active = is_active ();
722			if (active) stop ();
723			ev_stat_set (static_cast<ev_stat *>(this), path, interval);
724			if (active) start ();
725			}
726
727	root	1.31	void start (const char *path, ev_tstamp interval = 0.) throw ()
728	root	1.8	{
729	root	1.12	stop ();
730	root	1.8	set (path, interval);
731			start ();
732			}
733
734	root	1.31	void update () throw ()
735	root	1.8	{
736			ev_stat_stat (EV_A_ static_cast<ev_stat *>(this));
737			}
738			EV_END_WATCHER (stat, stat)
739			#endif
740
741			EV_BEGIN_WATCHER (idle, idle)
742	root	1.31	void set () throw () { }
743	root	1.8	EV_END_WATCHER (idle, idle)
744	root	1.7
745	root	1.8	EV_BEGIN_WATCHER (prepare, prepare)
746	root	1.31	void set () throw () { }
747	root	1.8	EV_END_WATCHER (prepare, prepare)
748
749			EV_BEGIN_WATCHER (check, check)
750	root	1.31	void set () throw () { }
751	root	1.8	EV_END_WATCHER (check, check)
752
753			#if EV_EMBED_ENABLE
754	root	1.7	EV_BEGIN_WATCHER (embed, embed)
755	root	1.39	void set (struct ev_loop *embedded_loop) throw ()
756			{
757			int active = is_active ();
758			if (active) stop ();
759			ev_embed_set (static_cast<ev_embed *>(this), embedded_loop);
760			if (active) start ();
761			}
762
763	root	1.31	void start (struct ev_loop *embedded_loop) throw ()
764	root	1.7	{
765	root	1.39	set (embedded_loop);
766	root	1.7	start ();
767			}
768
769			void sweep ()
770			{
771			ev_embed_sweep (EV_A_ static_cast<ev_embed *>(this));
772			}
773			EV_END_WATCHER (embed, embed)
774			#endif
775
776	root	1.10	#if EV_FORK_ENABLE
777			EV_BEGIN_WATCHER (fork, fork)
778	root	1.31	void set () throw () { }
779	root	1.10	EV_END_WATCHER (fork, fork)
780			#endif
781
782	root	1.39	#if EV_ASYNC_ENABLE
783			EV_BEGIN_WATCHER (async, async)
784			void set () throw () { }
785
786			void send () throw ()
787			{
788			ev_async_send (EV_A_ static_cast<ev_async *>(this));
789			}
790
791			bool async_pending () throw ()
792			{
793			return ev_async_pending (static_cast<ev_async *>(this));
794			}
795			EV_END_WATCHER (async, async)
796			#endif
797
798	llucax	1.28	#undef EV_PX
799			#undef EV_PX_
800	root	1.1	#undef EV_CONSTRUCT
801	root	1.4	#undef EV_BEGIN_WATCHER
802	root	1.7	#undef EV_END_WATCHER
803	root	1.1	}
804
805			#endif
806