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_CXX_EXCEPTIONS
#define EV_CXX_EXCEPTIONS 1
#endif

#undef EV_THROW
#if EV_CXX_EXCEPTIONS
#  include <stdexcept>
#  define EV_THROW(exception) throw (exception)
#else
#  define EV_THROW(exception)
#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
  };

#if EV_CXX_EXCEPTIONS
  struct bad_loop : std::runtime_error
  {
    bad_loop ()
    : std::runtime_error ("loop can't be initialized")
    {
    }
  };
#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)
#if EV_MULTIPLICITY
      EV_THROW (bad_loop) : EV_AX (EV_A)
#endif
    {
#if EV_MULTIPLICIY && EV_CXX_EXCEPTIONS
      if (!EV_A)
        throw bad_loop ();
#endif
    }

    bool operator== (const loop_ref &other) const throw ()
    {
#if EV_MULTIPLICITY
      return this->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) EV_THROW (bad_loop)
      : loop_ref (ev_loop_new (flags))
    {
    }

    ~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) EV_THROW (bad_loop)
#if EV_MULTIPLICITY
      : loop_ref (ev_default_loop (flags))
    {
    }
#else
    {
    #if EV_CXX_EXCEPTIONS
      int r =
    #endif
          ev_default_loop (flags);
    #if EV_CXX_EXCEPTIONS
      if (!r)
        throw bad_loop ();
    #endif
    }
#endif

    ~default_loop () throw ()
    {
      ev_default_destroy ();
#if EV_MULTIPLICITY
      EV_AX = 0;
#endif
    }

  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) throw ()
    {
      int active = is_active ();
      if (active) stop ();
      ev_child_set (static_cast<ev_child *>(this), pid);
      if (active) start ();
    }

    void start (int pid) throw ()
    {
      set (pid);
      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

}

#undef EV_THROW

#endif

Revision:	1.31
Committed:	Sat Jan 19 00:39:38 2008 UTC (16 years, 3 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.30:	+79 -77 lines
Log Message:	throw declarations are fine any time
#	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	llucax	1.30	#ifndef EV_CXX_EXCEPTIONS
50			#define EV_CXX_EXCEPTIONS 1
51			#endif
52
53			#undef EV_THROW
54			#if EV_CXX_EXCEPTIONS
55			# include <stdexcept>
56			# define EV_THROW(exception) throw (exception)
57			#else
58			# define EV_THROW(exception)
59			#endif
60
61	root	1.1	namespace ev {
62
63	llucax	1.24	typedef ev_tstamp tstamp;
64
65			enum {
66			UNDEF = EV_UNDEF,
67			NONE = EV_NONE,
68			READ = EV_READ,
69			WRITE = EV_WRITE,
70			TIMEOUT = EV_TIMEOUT,
71			PERIODIC = EV_PERIODIC,
72			SIGNAL = EV_SIGNAL,
73			CHILD = EV_CHILD,
74			STAT = EV_STAT,
75			IDLE = EV_IDLE,
76			CHECK = EV_CHECK,
77			PREPARE = EV_PREPARE,
78			FORK = EV_FORK,
79			EMBED = EV_EMBED,
80			ERROR = EV_ERROR,
81			};
82
83	llucax	1.25	enum
84			{
85			AUTO = EVFLAG_AUTO,
86			NOENV = EVFLAG_NOENV,
87			FORKCHECK = EVFLAG_FORKCHECK,
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			};
95
96			enum
97			{
98			NONBLOCK = EVLOOP_NONBLOCK,
99			ONESHOT = EVLOOP_ONESHOT
100			};
101
102			enum how_t
103			{
104			ONE = EVUNLOOP_ONE,
105			ALL = EVUNLOOP_ALL
106			};
107
108	llucax	1.30	#if EV_CXX_EXCEPTIONS
109	root	1.31	struct bad_loop : std::runtime_error
110	llucax	1.30	{
111	root	1.31	bad_loop ()
112			: std::runtime_error ("loop can't be initialized")
113			{
114			}
115	llucax	1.30	};
116			#endif
117
118	llucax	1.28	#ifdef EV_AX
119			# undef EV_AX
120			#endif
121
122			#ifdef EV_AX_
123			# undef EV_AX_
124			#endif
125
126			#if EV_MULTIPLICITY
127			# define EV_AX raw_loop
128			# define EV_AX_ raw_loop,
129			#else
130			# define EV_AX
131			# define EV_AX_
132			#endif
133
134			struct loop_ref
135			{
136
137			loop_ref (EV_P)
138			#if EV_MULTIPLICITY
139	llucax	1.30	EV_THROW (bad_loop) : EV_AX (EV_A)
140	llucax	1.28	#endif
141			{
142	llucax	1.30	#if EV_MULTIPLICIY && EV_CXX_EXCEPTIONS
143			if (!EV_A)
144			throw bad_loop ();
145			#endif
146	llucax	1.28	}
147
148	root	1.31	bool operator== (const loop_ref &other) const throw ()
149	llucax	1.28	{
150			#if EV_MULTIPLICITY
151			return this->EV_AX == other.EV_AX;
152			#else
153			return true;
154			#endif
155			}
156
157	root	1.31	bool operator!= (const loop_ref &other) const throw ()
158	llucax	1.28	{
159			#if EV_MULTIPLICITY
160			return ! (*this == other);
161			#else
162			return false;
163			#endif
164			}
165
166			#if EV_MULTIPLICITY
167	root	1.31	bool operator== (struct ev_loop *other) const throw ()
168	llucax	1.28	{
169			return this->EV_AX == other;
170			}
171
172	root	1.31	bool operator!= (struct ev_loop *other) const throw ()
173	llucax	1.28	{
174			return ! (*this == other);
175			}
176
177	root	1.31	bool operator== (const struct ev_loop *other) const throw ()
178	llucax	1.28	{
179			return this->EV_AX == other;
180			}
181
182	root	1.31	bool operator!= (const struct ev_loop *other) const throw ()
183	llucax	1.28	{
184			return (*this == other);
185			}
186
187	root	1.31	operator struct ev_loop * () const throw ()
188	llucax	1.28	{
189			return EV_AX;
190			}
191
192	root	1.31	operator const struct ev_loop * () const throw ()
193	llucax	1.28	{
194			return EV_AX;
195			}
196
197	root	1.31	bool is_default () const throw ()
198	llucax	1.28	{
199			return EV_AX == ev_default_loop (0);
200			}
201			#endif
202
203			void loop (int flags = 0)
204			{
205			ev_loop (EV_AX_ flags);
206			}
207
208	root	1.31	void unloop (how_t how = ONE) throw ()
209	llucax	1.28	{
210			ev_unloop (EV_AX_ how);
211			}
212
213	root	1.31	void post_fork () throw ()
214	llucax	1.28	{
215			#if EV_MULTIPLICITY
216			ev_loop_fork (EV_AX);
217			#else
218			ev_default_fork ();
219			#endif
220			}
221
222	root	1.31	unsigned int count () const throw ()
223	llucax	1.28	{
224			return ev_loop_count (EV_AX);
225			}
226
227	root	1.31	unsigned int backend () const throw ()
228	llucax	1.28	{
229			return ev_backend (EV_AX);
230			}
231
232	root	1.31	tstamp now () const throw ()
233	llucax	1.28	{
234			return ev_now (EV_AX);
235			}
236
237	root	1.31	void ref () throw ()
238	llucax	1.28	{
239			ev_ref (EV_AX);
240			}
241
242	root	1.31	void unref () throw ()
243	llucax	1.28	{
244			ev_unref (EV_AX);
245			}
246
247	root	1.31	void set_io_collect_interval (tstamp interval) throw ()
248	llucax	1.28	{
249			ev_set_io_collect_interval (EV_AX_ interval);
250			}
251
252	root	1.31	void set_timeout_collect_interval (tstamp interval) throw ()
253	llucax	1.28	{
254			ev_set_timeout_collect_interval (EV_AX_ interval);
255			}
256
257			// function callback
258	root	1.31	void once (int fd, int events, tstamp timeout, void (cb)(int, void ), void* arg = 0) throw ()
259	llucax	1.28	{
260			ev_once (EV_AX_ fd, events, timeout, cb, arg);
261			}
262
263			// method callback
264			template<class K, void (K::*method)(int)>
265	root	1.31	void once (int fd, int events, tstamp timeout, K *object) throw ()
266	llucax	1.28	{
267			once (fd, events, timeout, method_thunk<K, method>, object);
268			}
269
270			template<class K, void (K::*method)(int)>
271			static void method_thunk (int revents, void* arg)
272			{
273			K obj = static_cast<K >(arg);
274			(obj->*method) (revents);
275			}
276
277			// const method callback
278			template<class K, void (K::*method)(int) const>
279	root	1.31	void once (int fd, int events, tstamp timeout, const K *object) throw ()
280	llucax	1.28	{
281			once (fd, events, timeout, const_method_thunk<K, method>, object);
282			}
283
284			template<class K, void (K::*method)(int) const>
285			static void const_method_thunk (int revents, void* arg)
286			{
287			K obj = static_cast<K >(arg);
288			(obj->*method) (revents);
289			}
290
291			// simple method callback
292			template<class K, void (K::*method)()>
293	root	1.31	void once (int fd, int events, tstamp timeout, K *object) throw ()
294	llucax	1.28	{
295			once (fd, events, timeout, method_noargs_thunk<K, method>, object);
296			}
297
298			template<class K, void (K::*method)()>
299			static void method_noargs_thunk (int revents, void* arg)
300			{
301			K obj = static_cast<K >(arg);
302			(obj->*method) ();
303			}
304
305			// simpler function callback
306			template<void (*cb)(int)>
307	root	1.31	void once (int fd, int events, tstamp timeout) throw ()
308	llucax	1.28	{
309			once (fd, events, timeout, simpler_func_thunk<cb>);
310			}
311
312			template<void (*cb)(int)>
313			static void simpler_func_thunk (int revents, void* arg)
314			{
315			(*cb) (revents);
316			}
317
318			// simplest function callback
319			template<void (*cb)()>
320	root	1.31	void once (int fd, int events, tstamp timeout) throw ()
321	llucax	1.28	{
322			once (fd, events, timeout, simplest_func_thunk<cb>);
323			}
324
325			template<void (*cb)()>
326			static void simplest_func_thunk (int revents, void* arg)
327			{
328			(*cb) ();
329			}
330
331	root	1.31	void feed_fd_event (int fd, int revents) throw ()
332	llucax	1.28	{
333			ev_feed_fd_event (EV_AX_ fd, revents);
334			}
335
336	root	1.31	void feed_signal_event (int signum) throw ()
337	llucax	1.28	{
338			ev_feed_signal_event (EV_AX_ signum);
339			}
340
341			#if EV_MULTIPLICITY
342			struct ev_loop* EV_AX;
343			#endif
344
345			};
346
347			#if EV_MULTIPLICITY
348			struct dynamic_loop: loop_ref
349			{
350
351	llucax	1.30	dynamic_loop (unsigned int flags = AUTO) EV_THROW (bad_loop)
352	llucax	1.28	: loop_ref (ev_loop_new (flags))
353			{
354			}
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			struct default_loop: loop_ref
372			{
373
374	llucax	1.30	default_loop (unsigned int flags = AUTO) EV_THROW (bad_loop)
375	llucax	1.28	#if EV_MULTIPLICITY
376			: loop_ref (ev_default_loop (flags))
377			{
378			}
379			#else
380			{
381	llucax	1.30	#if EV_CXX_EXCEPTIONS
382			int r =
383			#endif
384			ev_default_loop (flags);
385			#if EV_CXX_EXCEPTIONS
386			if (!r)
387			throw bad_loop ();
388			#endif
389	llucax	1.28	}
390			#endif
391
392	root	1.31	~default_loop () throw ()
393	llucax	1.28	{
394			ev_default_destroy ();
395			#if EV_MULTIPLICITY
396			EV_AX = 0;
397			#endif
398			}
399
400			private:
401
402			default_loop (const default_loop &);
403
404			default_loop & operator= (const default_loop &);
405
406			};
407
408	root	1.31	inline loop_ref get_default_loop () throw ()
409	llucax	1.28	{
410			#if EV_MULTIPLICITY
411			return ev_default_loop (0);
412			#else
413			return loop_ref ();
414			#endif
415			}
416
417			#undef EV_AX
418			#undef EV_AX_
419
420			#undef EV_PX
421			#undef EV_PX_
422			#if EV_MULTIPLICITY
423			# define EV_PX loop_ref EV_A
424			# define EV_PX_ loop_ref EV_A_
425			#else
426			# define EV_PX
427			# define EV_PX_
428			#endif
429
430	root	1.13	template<class ev_watcher, class watcher>
431			struct base : ev_watcher
432	root	1.1	{
433	root	1.13	#if EV_MULTIPLICITY
434	llucax	1.28	EV_PX;
435	root	1.1
436	root	1.31	void set (EV_PX) throw ()
437	root	1.13	{
438			this->EV_A = EV_A;
439			}
440			#endif
441	root	1.1
442	root	1.31	base (EV_PX) throw ()
443	llucax	1.28	#if EV_MULTIPLICITY
444			: EV_A (EV_A)
445			#endif
446	root	1.13	{
447			ev_init (this, 0);
448			}
449
450	root	1.31	void set_ (void data, void (cb)(EV_P_ ev_watcher *w, int revents)) throw ()
451	root	1.13	{
452	root	1.17	this->data = data;
453	root	1.18	ev_set_cb (static_cast<ev_watcher *>(this), cb);
454	root	1.13	}
455
456	root	1.19	// method callback
457	root	1.13	template<class K, void (K::*method)(watcher &w, int)>
458	root	1.31	void set (K *object) throw ()
459	root	1.13	{
460			set_ (object, method_thunk<K, method>);
461			}
462
463			template<class K, void (K::*method)(watcher &w, int)>
464	root	1.18	static void 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	(obj->method) (static_cast<watcher *>(w), revents);
468	root	1.13	}
469
470	root	1.19	// const method callback
471	root	1.13	template<class K, void (K::*method)(watcher &w, int) const>
472	root	1.31	void set (const K *object) throw ()
473	root	1.13	{
474			set_ (object, const_method_thunk<K, method>);
475			}
476
477			template<class K, void (K::*method)(watcher &w, int) const>
478	root	1.18	static void const_method_thunk (EV_P_ ev_watcher *w, int revents)
479	root	1.13	{
480	root	1.17	K obj = static_cast<K >(w->data);
481	root	1.18	(static_cast<K >(w->data)->method) (static_cast<watcher >(w), revents);
482	root	1.13	}
483
484	root	1.19	// function callback
485	root	1.17	template<void (*function)(watcher &w, int)>
486	root	1.31	void set (void *data = 0) throw ()
487	root	1.13	{
488	root	1.16	set_ (data, function_thunk<function>);
489	root	1.13	}
490
491			template<void (*function)(watcher &w, int)>
492	root	1.18	static void function_thunk (EV_P_ ev_watcher *w, int revents)
493	root	1.13	{
494	root	1.18	function (static_cast<watcher >(w), revents);
495	root	1.13	}
496
497	root	1.19	// simple callback
498			template<class K, void (K::*method)()>
499	root	1.31	void set (K *object) throw ()
500	root	1.19	{
501			set_ (object, method_noargs_thunk<K, method>);
502			}
503
504			template<class K, void (K::*method)()>
505			static void method_noargs_thunk (EV_P_ ev_watcher *w, int revents)
506			{
507			K obj = static_cast<K >(w->data);
508			(obj->*method) ();
509			}
510
511	root	1.13	void operator ()(int events = EV_UNDEF)
512			{
513	root	1.14	return ev_cb (static_cast<ev_watcher *>(this))
514			(static_cast<ev_watcher *>(this), events);
515	root	1.13	}
516
517	root	1.31	bool is_active () const throw ()
518	root	1.1	{
519	root	1.13	return ev_is_active (static_cast<const ev_watcher *>(this));
520	root	1.1	}
521
522	root	1.31	bool is_pending () const throw ()
523	root	1.1	{
524	root	1.13	return ev_is_pending (static_cast<const ev_watcher *>(this));
525	root	1.1	}
526	llucax	1.27
527	root	1.31	void feed_event (int revents) throw ()
528	llucax	1.27	{
529			ev_feed_event (EV_A_ static_cast<const ev_watcher *>(this), revents);
530			}
531	root	1.1	};
532
533	root	1.31	inline tstamp now () throw ()
534	llucax	1.29	{
535			return ev_time ();
536			}
537
538	root	1.31	inline void delay (tstamp interval) throw ()
539	llucax	1.26	{
540			ev_sleep (interval);
541			}
542
543	root	1.31	inline int version_major () throw ()
544	llucax	1.26	{
545			return ev_version_major ();
546			}
547
548	root	1.31	inline int version_minor () throw ()
549	llucax	1.26	{
550			return ev_version_minor ();
551			}
552
553	root	1.31	inline unsigned int supported_backends () throw ()
554	llucax	1.26	{
555			return ev_supported_backends ();
556			}
557
558	root	1.31	inline unsigned int recommended_backends () throw ()
559	llucax	1.26	{
560			return ev_recommended_backends ();
561			}
562
563	root	1.31	inline unsigned int embeddable_backends () throw ()
564	llucax	1.26	{
565			return ev_embeddable_backends ();
566			}
567
568	root	1.31	inline void set_allocator (void (cb)(void *ptr, long size)) throw ()
569	llucax	1.26	{
570			ev_set_allocator (cb);
571			}
572
573	root	1.31	inline void set_syserr_cb (void (cb)(const char msg)) throw ()
574	llucax	1.26	{
575			ev_set_syserr_cb (cb);
576			}
577
578	root	1.1	#if EV_MULTIPLICITY
579	llucax	1.28	#define EV_CONSTRUCT(cppstem,cstem) \
580	root	1.31	(EV_PX = get_default_loop ()) throw () \
581	llucax	1.28	: base<ev_ ## cstem, cppstem> (EV_A) \
582	root	1.1	{ \
583	root	1.13	}
584	root	1.1	#else
585	llucax	1.28	#define EV_CONSTRUCT(cppstem,cstem) \
586	root	1.31	() throw () \
587	root	1.13	{ \
588			}
589	root	1.1	#endif
590
591			/* using a template here would require quite a bit more lines,
592			* so a macro solution was chosen */
593	root	1.4	#define EV_BEGIN_WATCHER(cppstem,cstem) \
594	root	1.1	\
595	root	1.13	struct cppstem : base<ev_ ## cstem, cppstem> \
596	root	1.1	{ \
597	root	1.31	void start () throw () \
598	root	1.1	{ \
599			ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this)); \
600			} \
601			\
602	root	1.31	void stop () throw () \
603	root	1.1	{ \
604			ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this)); \
605			} \
606			\
607	llucax	1.28	cppstem EV_CONSTRUCT(cppstem,cstem) \
608	root	1.1	\
609	root	1.31	~cppstem () throw () \
610	root	1.3	{ \
611			stop (); \
612			} \
613			\
614	root	1.13	using base<ev_ ## cstem, cppstem>::set; \
615			\
616	root	1.1	private: \
617			\
618	llucax	1.23	cppstem (const cppstem &o); \
619	root	1.6	\
620	llucax	1.23	cppstem & operator =(const cppstem &o); \
621	root	1.1	\
622			public:
623
624	root	1.4	#define EV_END_WATCHER(cppstem,cstem) \
625	root	1.6	};
626	root	1.4
627			EV_BEGIN_WATCHER (io, io)
628	root	1.31	void set (int fd, int events) throw ()
629	root	1.1	{
630			int active = is_active ();
631			if (active) stop ();
632			ev_io_set (static_cast<ev_io *>(this), fd, events);
633			if (active) start ();
634			}
635
636	root	1.31	void set (int events) throw ()
637	root	1.1	{
638			int active = is_active ();
639			if (active) stop ();
640			ev_io_set (static_cast<ev_io *>(this), fd, events);
641			if (active) start ();
642			}
643
644	root	1.31	void start (int fd, int events) throw ()
645	root	1.1	{
646			set (fd, events);
647			start ();
648			}
649	root	1.4	EV_END_WATCHER (io, io)
650	root	1.1
651	root	1.4	EV_BEGIN_WATCHER (timer, timer)
652	root	1.31	void set (ev_tstamp after, ev_tstamp repeat = 0.) throw ()
653	root	1.1	{
654			int active = is_active ();
655			if (active) stop ();
656			ev_timer_set (static_cast<ev_timer *>(this), after, repeat);
657			if (active) start ();
658			}
659
660	root	1.31	void start (ev_tstamp after, ev_tstamp repeat = 0.) throw ()
661	root	1.1	{
662			set (after, repeat);
663			start ();
664			}
665
666	root	1.31	void again () throw ()
667	root	1.1	{
668			ev_timer_again (EV_A_ static_cast<ev_timer *>(this));
669			}
670	root	1.4	EV_END_WATCHER (timer, timer)
671	root	1.1
672	root	1.8	#if EV_PERIODIC_ENABLE
673	root	1.4	EV_BEGIN_WATCHER (periodic, periodic)
674	root	1.31	void set (ev_tstamp at, ev_tstamp interval = 0.) throw ()
675	root	1.1	{
676			int active = is_active ();
677			if (active) stop ();
678			ev_periodic_set (static_cast<ev_periodic *>(this), at, interval, 0);
679			if (active) start ();
680			}
681
682	root	1.31	void start (ev_tstamp at, ev_tstamp interval = 0.) throw ()
683	root	1.1	{
684			set (at, interval);
685			start ();
686			}
687
688	root	1.31	void again () throw ()
689	root	1.1	{
690			ev_periodic_again (EV_A_ static_cast<ev_periodic *>(this));
691			}
692	root	1.4	EV_END_WATCHER (periodic, periodic)
693	root	1.3	#endif
694	root	1.1
695	root	1.4	EV_BEGIN_WATCHER (sig, signal)
696	root	1.31	void set (int signum) throw ()
697	root	1.1	{
698			int active = is_active ();
699			if (active) stop ();
700			ev_signal_set (static_cast<ev_signal *>(this), signum);
701			if (active) start ();
702			}
703
704	root	1.31	void start (int signum) throw ()
705	root	1.1	{
706			set (signum);
707			start ();
708			}
709	root	1.4	EV_END_WATCHER (sig, signal)
710	root	1.1
711	root	1.4	EV_BEGIN_WATCHER (child, child)
712	root	1.31	void set (int pid) throw ()
713	root	1.1	{
714			int active = is_active ();
715			if (active) stop ();
716			ev_child_set (static_cast<ev_child *>(this), pid);
717			if (active) start ();
718			}
719
720	root	1.31	void start (int pid) throw ()
721	root	1.1	{
722			set (pid);
723			start ();
724			}
725	root	1.4	EV_END_WATCHER (child, child)
726	root	1.1
727	root	1.8	#if EV_STAT_ENABLE
728			EV_BEGIN_WATCHER (stat, stat)
729	root	1.31	void set (const char *path, ev_tstamp interval = 0.) throw ()
730	root	1.8	{
731			int active = is_active ();
732			if (active) stop ();
733			ev_stat_set (static_cast<ev_stat *>(this), path, interval);
734			if (active) start ();
735			}
736
737	root	1.31	void start (const char *path, ev_tstamp interval = 0.) throw ()
738	root	1.8	{
739	root	1.12	stop ();
740	root	1.8	set (path, interval);
741			start ();
742			}
743
744	root	1.31	void update () throw ()
745	root	1.8	{
746			ev_stat_stat (EV_A_ static_cast<ev_stat *>(this));
747			}
748			EV_END_WATCHER (stat, stat)
749			#endif
750
751			EV_BEGIN_WATCHER (idle, idle)
752	root	1.31	void set () throw () { }
753	root	1.8	EV_END_WATCHER (idle, idle)
754	root	1.7
755	root	1.8	EV_BEGIN_WATCHER (prepare, prepare)
756	root	1.31	void set () throw () { }
757	root	1.8	EV_END_WATCHER (prepare, prepare)
758
759			EV_BEGIN_WATCHER (check, check)
760	root	1.31	void set () throw () { }
761	root	1.8	EV_END_WATCHER (check, check)
762
763			#if EV_EMBED_ENABLE
764	root	1.7	EV_BEGIN_WATCHER (embed, embed)
765	root	1.31	void start (struct ev_loop *embedded_loop) throw ()
766	root	1.7	{
767	root	1.12	stop ();
768			ev_embed_set (static_cast<ev_embed *>(this), embedded_loop);
769	root	1.7	start ();
770			}
771
772			void sweep ()
773			{
774			ev_embed_sweep (EV_A_ static_cast<ev_embed *>(this));
775			}
776			EV_END_WATCHER (embed, embed)
777			#endif
778
779	root	1.10	#if EV_FORK_ENABLE
780			EV_BEGIN_WATCHER (fork, fork)
781	root	1.31	void set () throw () { }
782	root	1.10	EV_END_WATCHER (fork, fork)
783			#endif
784
785	llucax	1.28	#undef EV_PX
786			#undef EV_PX_
787	root	1.1	#undef EV_CONSTRUCT
788	root	1.4	#undef EV_BEGIN_WATCHER
789	root	1.7	#undef EV_END_WATCHER
790	llucax	1.28
791	root	1.1	}
792
793	llucax	1.30	#undef EV_THROW
794
795	root	1.1	#endif
796