libev/ev%2B%2B.h

/*
 * libev simple C++ wrapper classes
 *
 * Copyright (c) 2007,2008,2010 Marc Alexander Lehmann <libev@schmorp.de>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modifica-
 * tion, are permitted provided that the following conditions are met:
 * 
 *   1.  Redistributions of source code must retain the above copyright notice,
 *       this list of conditions and the following disclaimer.
 * 
 *   2.  Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Alternatively, the contents of this file may be used under the terms of
 * the GNU General Public License ("GPL") version 2 or any later version,
 * in which case the provisions of the GPL are applicable instead of
 * the above. If you wish to allow the use of your version of this file
 * only under the terms of the GPL and not to allow others to use your
 * version of this file under the BSD license, indicate your decision
 * by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL. If you do not delete the
 * provisions above, a recipient may use your version of this file under
 * either the BSD or the GPL.
 */

#ifndef EVPP_H__
#define EVPP_H__

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

#ifndef EV_USE_STDEXCEPT
# define EV_USE_STDEXCEPT 1
#endif

#if EV_USE_STDEXCEPT
# include <stdexcept>
#endif

namespace ev {

  typedef ev_tstamp tstamp;

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

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

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

  enum
  {
    NONBLOCK = EVLOOP_NONBLOCK,
    ONESHOT  = EVLOOP_ONESHOT
  };

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

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

#ifdef EV_AX
#  undef EV_AX
#endif

#ifdef EV_AX_
#  undef EV_AX_
#endif

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

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

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

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

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

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

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

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

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

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

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

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

    unsigned int 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);
    }

#if EV_FEATURE_API
    unsigned int count () const throw ()
    {
      return ev_loop_count (EV_AX);
    }

    unsigned int depth () const throw ()
    {
      return ev_loop_depth (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);
    }
#endif

    // function callback
    void once (int fd, int events, tstamp timeout, void (*cb)(int, void *), void *arg = 0) throw ()
    {
      ev_once (EV_AX_ fd, events, timeout, cb, arg);
    }

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

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

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

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

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

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

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

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

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

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

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

#if EV_MULTIPLICITY
    struct ev_loop* EV_AX;
#endif

  };

#if EV_MULTIPLICITY
  struct dynamic_loop : loop_ref
  {

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

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

  private:

    dynamic_loop (const dynamic_loop &);

    dynamic_loop & operator= (const dynamic_loop &);

  };
#endif

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

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

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

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

#undef EV_AX
#undef EV_AX_

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  #define EV_END_WATCHER(cppstem,cstem)                                                 \
  };

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

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

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

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

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

    void again () throw ()
    {
      ev_timer_again (EV_A_ static_cast<ev_timer *>(this));
    }

    ev_tstamp remaining ()
    {
      return ev_timer_remaining (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

  #if EV_SIGNAL_ENABLE
  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)
  #endif

  #if EV_CHILD_ENABLE
  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)
  #endif

  #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

  #if EV_IDLE_ENABLE
  EV_BEGIN_WATCHER (idle, idle)
    void set () throw () { }
  EV_END_WATCHER (idle, idle)
  #endif

  #if EV_PREPARE_ENABLE
  EV_BEGIN_WATCHER (prepare, prepare)
    void set () throw () { }
  EV_END_WATCHER (prepare, prepare)
  #endif

  #if EV_CHECK_ENABLE
  EV_BEGIN_WATCHER (check, check)
    void set () throw () { }
  EV_END_WATCHER (check, check)
  #endif

  #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:	1.49
Committed:	Tue Mar 16 00:43:22 2010 UTC (14 years, 2 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.48:	+1 -1 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.21	/*
2			* libev simple C++ wrapper classes
3			*
4	root	1.48	* Copyright (c) 2007,2008,2010 Marc Alexander Lehmann <libev@schmorp.de>
5	root	1.21	* All rights reserved.
6			*
7			* Redistribution and use in source and binary forms, with or without modifica-
8			* tion, are permitted provided that the following conditions are met:
9			*
10			* 1. Redistributions of source code must retain the above copyright notice,
11			* this list of conditions and the following disclaimer.
12			*
13			* 2. Redistributions in binary form must reproduce the above copyright
14			* notice, this list of conditions and the following disclaimer in the
15			* documentation and/or other materials provided with the distribution.
16			*
17			* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18			* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19			* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20			* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21			* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22			* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23			* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24			* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25			* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26			* OF THE POSSIBILITY OF SUCH DAMAGE.
27			*
28			* Alternatively, the contents of this file may be used under the terms of
29			* the GNU General Public License ("GPL") version 2 or any later version,
30			* in which case the provisions of the GPL are applicable instead of
31			* the above. If you wish to allow the use of your version of this file
32			* only under the terms of the GPL and not to allow others to use your
33			* version of this file under the BSD license, indicate your decision
34			* by deleting the provisions above and replace them with the notice
35			* and other provisions required by the GPL. If you do not delete the
36			* provisions above, a recipient may use your version of this file under
37			* either the BSD or the GPL.
38			*/
39
40	root	1.1	#ifndef EVPP_H__
41			#define EVPP_H__
42
43	root	1.20	#ifdef EV_H
44			# include EV_H
45			#else
46	root	1.22	# include "ev.h"
47	root	1.20	#endif
48	root	1.1
49	root	1.32	#ifndef EV_USE_STDEXCEPT
50			# define EV_USE_STDEXCEPT 1
51	llucax	1.30	#endif
52
53	root	1.32	#if EV_USE_STDEXCEPT
54			# include <stdexcept>
55	llucax	1.30	#endif
56
57	root	1.1	namespace ev {
58
59	llucax	1.24	typedef ev_tstamp tstamp;
60
61	root	1.43	enum
62			{
63	llucax	1.24	UNDEF = EV_UNDEF,
64			NONE = EV_NONE,
65			READ = EV_READ,
66			WRITE = EV_WRITE,
67			TIMEOUT = EV_TIMEOUT,
68			PERIODIC = EV_PERIODIC,
69			SIGNAL = EV_SIGNAL,
70			CHILD = EV_CHILD,
71			STAT = EV_STAT,
72			IDLE = EV_IDLE,
73			CHECK = EV_CHECK,
74			PREPARE = EV_PREPARE,
75			FORK = EV_FORK,
76	root	1.39	ASYNC = EV_ASYNC,
77	llucax	1.24	EMBED = EV_EMBED,
78	root	1.42	# undef ERROR // some systems stupidly #define ERROR
79	llucax	1.24	ERROR = EV_ERROR,
80			};
81
82	llucax	1.25	enum
83			{
84	root	1.41	AUTO = EVFLAG_AUTO,
85			NOENV = EVFLAG_NOENV,
86	llucax	1.25	FORKCHECK = EVFLAG_FORKCHECK,
87	root	1.41
88			SELECT = EVBACKEND_SELECT,
89			POLL = EVBACKEND_POLL,
90			EPOLL = EVBACKEND_EPOLL,
91			KQUEUE = EVBACKEND_KQUEUE,
92			DEVPOLL = EVBACKEND_DEVPOLL,
93			PORT = EVBACKEND_PORT
94	llucax	1.25	};
95
96			enum
97			{
98			NONBLOCK = EVLOOP_NONBLOCK,
99	root	1.41	ONESHOT = EVLOOP_ONESHOT
100	llucax	1.25	};
101
102			enum how_t
103			{
104			ONE = EVUNLOOP_ONE,
105			ALL = EVUNLOOP_ALL
106			};
107
108	root	1.32	struct bad_loop
109			#if EV_USE_STDEXCEPT
110			: std::runtime_error
111			#endif
112	llucax	1.30	{
113	root	1.32	#if EV_USE_STDEXCEPT
114	root	1.31	bad_loop ()
115	root	1.32	: std::runtime_error ("libev event loop cannot be initialized, bad value of LIBEV_FLAGS?")
116	root	1.31	{
117			}
118	root	1.32	#endif
119	llucax	1.30	};
120
121	llucax	1.28	#ifdef EV_AX
122			# undef EV_AX
123			#endif
124
125			#ifdef EV_AX_
126			# undef EV_AX_
127			#endif
128
129			#if EV_MULTIPLICITY
130			# define EV_AX raw_loop
131			# define EV_AX_ raw_loop,
132			#else
133			# define EV_AX
134			# define EV_AX_
135			#endif
136
137			struct loop_ref
138			{
139	root	1.36	loop_ref (EV_P) throw ()
140	llucax	1.28	#if EV_MULTIPLICITY
141	root	1.36	: EV_AX (EV_A)
142			#endif
143	llucax	1.33	{
144			}
145	llucax	1.28
146	root	1.32	bool operator == (const loop_ref &other) const throw ()
147	llucax	1.28	{
148			#if EV_MULTIPLICITY
149	root	1.32	return EV_AX == other.EV_AX;
150	llucax	1.28	#else
151			return true;
152			#endif
153			}
154
155	root	1.32	bool operator != (const loop_ref &other) const throw ()
156	llucax	1.28	{
157			#if EV_MULTIPLICITY
158			return ! (*this == other);
159			#else
160			return false;
161			#endif
162			}
163
164			#if EV_MULTIPLICITY
165	root	1.44	bool operator == (const EV_P) const throw ()
166	llucax	1.28	{
167	root	1.44	return this->EV_AX == EV_A;
168	llucax	1.28	}
169
170	root	1.44	bool operator != (const EV_P) const throw ()
171	llucax	1.28	{
172	root	1.44	return (*this == EV_A);
173	llucax	1.28	}
174
175	root	1.31	operator struct ev_loop * () const throw ()
176	llucax	1.28	{
177			return EV_AX;
178			}
179
180	root	1.31	operator const struct ev_loop * () const throw ()
181	llucax	1.28	{
182			return EV_AX;
183			}
184
185	root	1.31	bool is_default () const throw ()
186	llucax	1.28	{
187			return EV_AX == ev_default_loop (0);
188			}
189			#endif
190
191			void loop (int flags = 0)
192			{
193			ev_loop (EV_AX_ flags);
194			}
195
196	root	1.31	void unloop (how_t how = ONE) throw ()
197	llucax	1.28	{
198			ev_unloop (EV_AX_ how);
199			}
200
201	root	1.31	void post_fork () throw ()
202	llucax	1.28	{
203			#if EV_MULTIPLICITY
204			ev_loop_fork (EV_AX);
205			#else
206			ev_default_fork ();
207			#endif
208			}
209
210	root	1.31	unsigned int backend () const throw ()
211	llucax	1.28	{
212			return ev_backend (EV_AX);
213			}
214
215	root	1.31	tstamp now () const throw ()
216	llucax	1.28	{
217			return ev_now (EV_AX);
218			}
219
220	root	1.31	void ref () throw ()
221	llucax	1.28	{
222			ev_ref (EV_AX);
223			}
224
225	root	1.31	void unref () throw ()
226	llucax	1.28	{
227			ev_unref (EV_AX);
228			}
229
230	root	1.49	#if EV_FEATURE_API
231	root	1.45	unsigned int count () const throw ()
232			{
233			return ev_loop_count (EV_AX);
234			}
235
236			unsigned int depth () const throw ()
237			{
238			return ev_loop_depth (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	root	1.45	#endif
251	llucax	1.28
252			// function callback
253	root	1.44	void once (int fd, int events, tstamp timeout, void (cb)(int, void ), void *arg = 0) throw ()
254	llucax	1.28	{
255			ev_once (EV_AX_ fd, events, timeout, cb, arg);
256			}
257
258			// method callback
259			template<class K, void (K::*method)(int)>
260	root	1.31	void once (int fd, int events, tstamp timeout, K *object) throw ()
261	llucax	1.28	{
262			once (fd, events, timeout, method_thunk<K, method>, object);
263			}
264
265	root	1.44	// default method == operator ()
266			template<class K>
267			void once (int fd, int events, tstamp timeout, K *object) throw ()
268	llucax	1.28	{
269	root	1.44	once (fd, events, timeout, method_thunk<K, &K::operator ()>, object);
270	llucax	1.28	}
271
272	root	1.44	template<class K, void (K::*method)(int)>
273			static void method_thunk (int revents, void *arg)
274	llucax	1.28	{
275	root	1.44	static_cast<K >(arg)->method
276			(revents);
277	llucax	1.28	}
278
279	root	1.44	// no-argument method callback
280	llucax	1.28	template<class K, void (K::*method)()>
281	root	1.31	void once (int fd, int events, tstamp timeout, K *object) throw ()
282	llucax	1.28	{
283			once (fd, events, timeout, method_noargs_thunk<K, method>, object);
284			}
285
286			template<class K, void (K::*method)()>
287	root	1.44	static void method_noargs_thunk (int revents, void *arg)
288	llucax	1.28	{
289	root	1.44	static_cast<K >(arg)->method
290			();
291	llucax	1.28	}
292
293			// simpler function callback
294			template<void (*cb)(int)>
295	root	1.31	void once (int fd, int events, tstamp timeout) throw ()
296	llucax	1.28	{
297			once (fd, events, timeout, simpler_func_thunk<cb>);
298			}
299
300			template<void (*cb)(int)>
301	root	1.44	static void simpler_func_thunk (int revents, void *arg)
302	llucax	1.28	{
303	root	1.44	(*cb)
304			(revents);
305	llucax	1.28	}
306
307			// simplest function callback
308			template<void (*cb)()>
309	root	1.31	void once (int fd, int events, tstamp timeout) throw ()
310	llucax	1.28	{
311			once (fd, events, timeout, simplest_func_thunk<cb>);
312			}
313
314			template<void (*cb)()>
315	root	1.44	static void simplest_func_thunk (int revents, void *arg)
316	llucax	1.28	{
317	root	1.44	(*cb)
318			();
319	llucax	1.28	}
320
321	root	1.31	void feed_fd_event (int fd, int revents) throw ()
322	llucax	1.28	{
323			ev_feed_fd_event (EV_AX_ fd, revents);
324			}
325
326	root	1.31	void feed_signal_event (int signum) throw ()
327	llucax	1.28	{
328			ev_feed_signal_event (EV_AX_ signum);
329			}
330
331			#if EV_MULTIPLICITY
332			struct ev_loop* EV_AX;
333			#endif
334
335			};
336
337			#if EV_MULTIPLICITY
338	root	1.36	struct dynamic_loop : loop_ref
339	llucax	1.28	{
340
341	llucax	1.34	dynamic_loop (unsigned int flags = AUTO) throw (bad_loop)
342	root	1.36	: loop_ref (ev_loop_new (flags))
343	llucax	1.28	{
344	root	1.36	if (!EV_AX)
345			throw bad_loop ();
346	llucax	1.28	}
347
348	root	1.31	~dynamic_loop () throw ()
349	llucax	1.28	{
350			ev_loop_destroy (EV_AX);
351			EV_AX = 0;
352			}
353
354			private:
355
356			dynamic_loop (const dynamic_loop &);
357
358			dynamic_loop & operator= (const dynamic_loop &);
359
360			};
361			#endif
362
363	root	1.36	struct default_loop : loop_ref
364	llucax	1.28	{
365	root	1.32	default_loop (unsigned int flags = AUTO) throw (bad_loop)
366	llucax	1.28	#if EV_MULTIPLICITY
367	root	1.32	: loop_ref (ev_default_loop (flags))
368			#endif
369	llucax	1.28	{
370	root	1.36	if (
371			#if EV_MULTIPLICITY
372			!EV_AX
373			#else
374			!ev_default_loop (flags)
375	root	1.32	#endif
376	root	1.36	)
377			throw bad_loop ();
378	llucax	1.28	}
379
380	root	1.31	~default_loop () throw ()
381	llucax	1.28	{
382			ev_default_destroy ();
383			}
384
385			private:
386			default_loop (const default_loop &);
387	root	1.32	default_loop &operator = (const default_loop &);
388	llucax	1.28	};
389
390	root	1.31	inline loop_ref get_default_loop () throw ()
391	llucax	1.28	{
392			#if EV_MULTIPLICITY
393			return ev_default_loop (0);
394			#else
395			return loop_ref ();
396			#endif
397			}
398
399			#undef EV_AX
400			#undef EV_AX_
401
402			#undef EV_PX
403			#undef EV_PX_
404			#if EV_MULTIPLICITY
405			# define EV_PX loop_ref EV_A
406			# define EV_PX_ loop_ref EV_A_
407			#else
408			# define EV_PX
409			# define EV_PX_
410			#endif
411
412	root	1.13	template<class ev_watcher, class watcher>
413			struct base : ev_watcher
414	root	1.1	{
415	root	1.13	#if EV_MULTIPLICITY
416	llucax	1.28	EV_PX;
417	root	1.1
418	root	1.44	void set (EV_P) throw ()
419	root	1.13	{
420			this->EV_A = EV_A;
421			}
422			#endif
423	root	1.1
424	root	1.31	base (EV_PX) throw ()
425	llucax	1.28	#if EV_MULTIPLICITY
426			: EV_A (EV_A)
427			#endif
428	root	1.13	{
429			ev_init (this, 0);
430			}
431
432	root	1.44	void set_ (const void data, void (cb)(EV_P_ ev_watcher *w, int revents)) throw ()
433	root	1.13	{
434	root	1.44	this->data = (void *)data;
435	root	1.18	ev_set_cb (static_cast<ev_watcher *>(this), cb);
436	root	1.13	}
437
438	root	1.44	// function callback
439			template<void (*function)(watcher &w, int)>
440			void set (void *data = 0) throw ()
441	root	1.13	{
442	root	1.44	set_ (data, function_thunk<function>);
443	root	1.13	}
444
445	root	1.44	template<void (*function)(watcher &w, int)>
446			static void function_thunk (EV_P_ ev_watcher *w, int revents)
447	root	1.13	{
448	root	1.44	function
449			(static_cast<watcher >(w), revents);
450	root	1.13	}
451
452	root	1.44	// method callback
453			template<class K, void (K::*method)(watcher &w, int)>
454			void set (K *object) throw ()
455	root	1.13	{
456	root	1.44	set_ (object, method_thunk<K, method>);
457	root	1.13	}
458
459	root	1.44	// default method == operator ()
460			template<class K>
461			void set (K *object) throw ()
462	root	1.13	{
463	root	1.44	set_ (object, method_thunk<K, &K::operator ()>);
464	root	1.13	}
465
466	root	1.44	template<class K, void (K::*method)(watcher &w, int)>
467			static void method_thunk (EV_P_ ev_watcher *w, int revents)
468	root	1.13	{
469	root	1.44	(static_cast<K >(w->data)->method)
470			(static_cast<watcher >(w), revents);
471	root	1.13	}
472
473	root	1.44	// no-argument callback
474	root	1.19	template<class K, void (K::*method)()>
475	root	1.31	void set (K *object) throw ()
476	root	1.19	{
477			set_ (object, method_noargs_thunk<K, method>);
478			}
479
480			template<class K, void (K::*method)()>
481			static void method_noargs_thunk (EV_P_ ev_watcher *w, int revents)
482			{
483	root	1.44	static_cast<K >(w->data)->method
484			();
485	root	1.19	}
486
487	root	1.13	void operator ()(int events = EV_UNDEF)
488			{
489	root	1.44	return
490			ev_cb (static_cast<ev_watcher *>(this))
491			(static_cast<ev_watcher *>(this), events);
492	root	1.13	}
493
494	root	1.31	bool is_active () const throw ()
495	root	1.1	{
496	root	1.13	return ev_is_active (static_cast<const ev_watcher *>(this));
497	root	1.1	}
498
499	root	1.31	bool is_pending () const throw ()
500	root	1.1	{
501	root	1.13	return ev_is_pending (static_cast<const ev_watcher *>(this));
502	root	1.1	}
503	llucax	1.27
504	root	1.31	void feed_event (int revents) throw ()
505	llucax	1.27	{
506			ev_feed_event (EV_A_ static_cast<const ev_watcher *>(this), revents);
507			}
508	root	1.1	};
509
510	root	1.31	inline tstamp now () throw ()
511	llucax	1.29	{
512			return ev_time ();
513			}
514
515	root	1.31	inline void delay (tstamp interval) throw ()
516	llucax	1.26	{
517			ev_sleep (interval);
518			}
519
520	root	1.31	inline int version_major () throw ()
521	llucax	1.26	{
522			return ev_version_major ();
523			}
524
525	root	1.31	inline int version_minor () throw ()
526	llucax	1.26	{
527			return ev_version_minor ();
528			}
529
530	root	1.31	inline unsigned int supported_backends () throw ()
531	llucax	1.26	{
532			return ev_supported_backends ();
533			}
534
535	root	1.31	inline unsigned int recommended_backends () throw ()
536	llucax	1.26	{
537			return ev_recommended_backends ();
538			}
539
540	root	1.31	inline unsigned int embeddable_backends () throw ()
541	llucax	1.26	{
542			return ev_embeddable_backends ();
543			}
544
545	root	1.31	inline void set_allocator (void (cb)(void *ptr, long size)) throw ()
546	llucax	1.26	{
547			ev_set_allocator (cb);
548			}
549
550	root	1.31	inline void set_syserr_cb (void (cb)(const char msg)) throw ()
551	llucax	1.26	{
552			ev_set_syserr_cb (cb);
553			}
554
555	root	1.1	#if EV_MULTIPLICITY
556	llucax	1.28	#define EV_CONSTRUCT(cppstem,cstem) \
557	root	1.39	(EV_PX = get_default_loop ()) throw () \
558	llucax	1.28	: base<ev_ ## cstem, cppstem> (EV_A) \
559	root	1.1	{ \
560	root	1.13	}
561	root	1.1	#else
562	llucax	1.28	#define EV_CONSTRUCT(cppstem,cstem) \
563	root	1.39	() throw () \
564	root	1.13	{ \
565			}
566	root	1.1	#endif
567
568			/* using a template here would require quite a bit more lines,
569			* so a macro solution was chosen */
570	root	1.4	#define EV_BEGIN_WATCHER(cppstem,cstem) \
571	root	1.1	\
572	root	1.13	struct cppstem : base<ev_ ## cstem, cppstem> \
573	root	1.1	{ \
574	root	1.39	void start () throw () \
575	root	1.1	{ \
576			ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this)); \
577			} \
578			\
579	root	1.39	void stop () throw () \
580	root	1.1	{ \
581			ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this)); \
582			} \
583			\
584	llucax	1.28	cppstem EV_CONSTRUCT(cppstem,cstem) \
585	root	1.1	\
586	root	1.39	~cppstem () throw () \
587	root	1.3	{ \
588			stop (); \
589			} \
590			\
591	root	1.13	using base<ev_ ## cstem, cppstem>::set; \
592			\
593	root	1.1	private: \
594			\
595	llucax	1.23	cppstem (const cppstem &o); \
596	root	1.6	\
597	root	1.39	cppstem &operator =(const cppstem &o); \
598	root	1.1	\
599			public:
600
601	root	1.4	#define EV_END_WATCHER(cppstem,cstem) \
602	root	1.6	};
603	root	1.4
604			EV_BEGIN_WATCHER (io, io)
605	root	1.31	void set (int fd, int events) throw ()
606	root	1.1	{
607			int active = is_active ();
608			if (active) stop ();
609			ev_io_set (static_cast<ev_io *>(this), fd, events);
610			if (active) start ();
611			}
612
613	root	1.31	void set (int events) throw ()
614	root	1.1	{
615			int active = is_active ();
616			if (active) stop ();
617			ev_io_set (static_cast<ev_io *>(this), fd, events);
618			if (active) start ();
619			}
620
621	root	1.31	void start (int fd, int events) throw ()
622	root	1.1	{
623			set (fd, events);
624			start ();
625			}
626	root	1.4	EV_END_WATCHER (io, io)
627	root	1.1
628	root	1.4	EV_BEGIN_WATCHER (timer, timer)
629	root	1.31	void set (ev_tstamp after, ev_tstamp repeat = 0.) throw ()
630	root	1.1	{
631			int active = is_active ();
632			if (active) stop ();
633			ev_timer_set (static_cast<ev_timer *>(this), after, repeat);
634			if (active) start ();
635			}
636
637	root	1.31	void start (ev_tstamp after, ev_tstamp repeat = 0.) throw ()
638	root	1.1	{
639			set (after, repeat);
640			start ();
641			}
642
643	root	1.31	void again () throw ()
644	root	1.1	{
645			ev_timer_again (EV_A_ static_cast<ev_timer *>(this));
646			}
647	root	1.47
648			ev_tstamp remaining ()
649			{
650			return ev_timer_remaining (EV_A_ static_cast<ev_timer *>(this));
651			}
652	root	1.4	EV_END_WATCHER (timer, timer)
653	root	1.1
654	root	1.8	#if EV_PERIODIC_ENABLE
655	root	1.4	EV_BEGIN_WATCHER (periodic, periodic)
656	root	1.31	void set (ev_tstamp at, ev_tstamp interval = 0.) throw ()
657	root	1.1	{
658			int active = is_active ();
659			if (active) stop ();
660			ev_periodic_set (static_cast<ev_periodic *>(this), at, interval, 0);
661			if (active) start ();
662			}
663
664	root	1.31	void start (ev_tstamp at, ev_tstamp interval = 0.) throw ()
665	root	1.1	{
666			set (at, interval);
667			start ();
668			}
669
670	root	1.31	void again () throw ()
671	root	1.1	{
672			ev_periodic_again (EV_A_ static_cast<ev_periodic *>(this));
673			}
674	root	1.4	EV_END_WATCHER (periodic, periodic)
675	root	1.3	#endif
676	root	1.1
677	root	1.48	#if EV_SIGNAL_ENABLE
678	root	1.4	EV_BEGIN_WATCHER (sig, signal)
679	root	1.31	void set (int signum) throw ()
680	root	1.1	{
681			int active = is_active ();
682			if (active) stop ();
683			ev_signal_set (static_cast<ev_signal *>(this), signum);
684			if (active) start ();
685			}
686
687	root	1.31	void start (int signum) throw ()
688	root	1.1	{
689			set (signum);
690			start ();
691			}
692	root	1.4	EV_END_WATCHER (sig, signal)
693	root	1.48	#endif
694	root	1.1
695	root	1.48	#if EV_CHILD_ENABLE
696	root	1.4	EV_BEGIN_WATCHER (child, child)
697	root	1.37	void set (int pid, int trace = 0) throw ()
698	root	1.1	{
699			int active = is_active ();
700			if (active) stop ();
701	root	1.37	ev_child_set (static_cast<ev_child *>(this), pid, trace);
702	root	1.1	if (active) start ();
703			}
704
705	root	1.37	void start (int pid, int trace = 0) throw ()
706	root	1.1	{
707	root	1.37	set (pid, trace);
708	root	1.1	start ();
709			}
710	root	1.4	EV_END_WATCHER (child, child)
711	root	1.48	#endif
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	root	1.48	#if EV_IDLE_ENABLE
738	root	1.8	EV_BEGIN_WATCHER (idle, idle)
739	root	1.31	void set () throw () { }
740	root	1.8	EV_END_WATCHER (idle, idle)
741	root	1.48	#endif
742	root	1.7
743	root	1.48	#if EV_PREPARE_ENABLE
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	root	1.48	#endif
748	root	1.8
749	root	1.48	#if EV_CHECK_ENABLE
750	root	1.8	EV_BEGIN_WATCHER (check, check)
751	root	1.31	void set () throw () { }
752	root	1.8	EV_END_WATCHER (check, check)
753	root	1.48	#endif
754	root	1.8
755			#if EV_EMBED_ENABLE
756	root	1.7	EV_BEGIN_WATCHER (embed, embed)
757	root	1.39	void set (struct ev_loop *embedded_loop) throw ()
758			{
759			int active = is_active ();
760			if (active) stop ();
761			ev_embed_set (static_cast<ev_embed *>(this), embedded_loop);
762			if (active) start ();
763			}
764
765	root	1.31	void start (struct ev_loop *embedded_loop) throw ()
766	root	1.7	{
767	root	1.39	set (embedded_loop);
768	root	1.7	start ();
769			}
770
771			void sweep ()
772			{
773			ev_embed_sweep (EV_A_ static_cast<ev_embed *>(this));
774			}
775			EV_END_WATCHER (embed, embed)
776			#endif
777
778	root	1.10	#if EV_FORK_ENABLE
779			EV_BEGIN_WATCHER (fork, fork)
780	root	1.31	void set () throw () { }
781	root	1.10	EV_END_WATCHER (fork, fork)
782			#endif
783
784	root	1.39	#if EV_ASYNC_ENABLE
785			EV_BEGIN_WATCHER (async, async)
786			void set () throw () { }
787
788			void send () throw ()
789			{
790			ev_async_send (EV_A_ static_cast<ev_async *>(this));
791			}
792
793			bool async_pending () throw ()
794			{
795			return ev_async_pending (static_cast<ev_async *>(this));
796			}
797			EV_END_WATCHER (async, async)
798			#endif
799
800	llucax	1.28	#undef EV_PX
801			#undef EV_PX_
802	root	1.1	#undef EV_CONSTRUCT
803	root	1.4	#undef EV_BEGIN_WATCHER
804	root	1.7	#undef EV_END_WATCHER
805	root	1.1	}
806
807			#endif
808