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

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
  };

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

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

    base ()
    {
      ev_init (this, 0);
    }

    void set_ (void *data, void (*cb)(EV_P_ ev_watcher *w, int revents))
    {
      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)
    {
      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)
    {
      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)
    {
      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)
    {
      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
    {
      return ev_is_active (static_cast<const ev_watcher *>(this));
    }

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

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

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

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

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

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

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

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

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


  inline ev_tstamp now (EV_P)
  {
    return ev_now (EV_A);
  }

  #if EV_MULTIPLICITY
    #define EV_CONSTRUCT                                                                \
      (EV_P = EV_DEFAULT)                                                               \
      {                                                                                 \
        set (EV_A);                                                                     \
      }
  #else
    #define EV_CONSTRUCT                                                                \
      ()                                                                                \
      {                                                                                 \
      }
  #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 ()                                                                       \
    {                                                                                   \
      ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this));                 \
    }                                                                                   \
                                                                                        \
    void stop ()                                                                        \
    {                                                                                   \
      ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this));                  \
    }                                                                                   \
                                                                                        \
    cppstem EV_CONSTRUCT                                                                \
                                                                                        \
    ~cppstem ()                                                                         \
    {                                                                                   \
      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)
    {
      int active = is_active ();
      if (active) stop ();
      ev_io_set (static_cast<ev_io *>(this), fd, events);
      if (active) start ();
    }

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

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

    void again ()
    {
      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.)
    {
      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.)
    {
      set (at, interval);
      start ();
    }

    void again ()
    {
      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)
    {
      int active = is_active ();
      if (active) stop ();
      ev_signal_set (static_cast<ev_signal *>(this), signum);
      if (active) start ();
    }

    void start (int signum)
    {
      set (signum);
      start ();
    }
  EV_END_WATCHER (sig, signal)

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

    void start (int pid)
    {
      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.)
    {
      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.)
    {
      stop ();
      set (path, interval);
      start ();
    }

    void update ()
    {
      ev_stat_stat (EV_A_ static_cast<ev_stat *>(this));
    }
  EV_END_WATCHER (stat, stat)
  #endif

  EV_BEGIN_WATCHER (idle, idle)
    void set () { }
  EV_END_WATCHER (idle, idle)

  EV_BEGIN_WATCHER (prepare, prepare)
    void set () { }
  EV_END_WATCHER (prepare, prepare)

  EV_BEGIN_WATCHER (check, check)
    void set () { }
  EV_END_WATCHER (check, check)

  #if EV_EMBED_ENABLE
  EV_BEGIN_WATCHER (embed, embed)
    void start (struct ev_loop *embedded_loop)
    {
      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 () { }
  EV_END_WATCHER (fork, fork)
  #endif

  #undef EV_CONSTRUCT
  #undef EV_BEGIN_WATCHER
  #undef EV_END_WATCHER
}

#endif

Revision:	1.26
Committed:	Fri Jan 18 18:13:57 2008 UTC (16 years, 3 months ago) by llucax
Content type:	text/plain
Branch:	MAIN
Changes since 1.25:	+40 -0 lines
Log Message:	Add missing free functions to ev namespace.
#	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			namespace ev {
50
51	llucax	1.24	typedef ev_tstamp tstamp;
52
53			enum {
54			UNDEF = EV_UNDEF,
55			NONE = EV_NONE,
56			READ = EV_READ,
57			WRITE = EV_WRITE,
58			TIMEOUT = EV_TIMEOUT,
59			PERIODIC = EV_PERIODIC,
60			SIGNAL = EV_SIGNAL,
61			CHILD = EV_CHILD,
62			STAT = EV_STAT,
63			IDLE = EV_IDLE,
64			CHECK = EV_CHECK,
65			PREPARE = EV_PREPARE,
66			FORK = EV_FORK,
67			EMBED = EV_EMBED,
68			ERROR = EV_ERROR,
69			};
70
71	llucax	1.25	enum
72			{
73			AUTO = EVFLAG_AUTO,
74			NOENV = EVFLAG_NOENV,
75			FORKCHECK = EVFLAG_FORKCHECK,
76			SELECT = EVBACKEND_SELECT,
77			POLL = EVBACKEND_POLL,
78			EPOLL = EVBACKEND_EPOLL,
79			KQUEUE = EVBACKEND_KQUEUE,
80			DEVPOLL = EVBACKEND_DEVPOLL,
81			PORT = EVBACKEND_PORT
82			};
83
84			enum
85			{
86			NONBLOCK = EVLOOP_NONBLOCK,
87			ONESHOT = EVLOOP_ONESHOT
88			};
89
90			enum how_t
91			{
92			ONE = EVUNLOOP_ONE,
93			ALL = EVUNLOOP_ALL
94			};
95
96	root	1.13	template<class ev_watcher, class watcher>
97			struct base : ev_watcher
98	root	1.1	{
99	root	1.13	#if EV_MULTIPLICITY
100			EV_P;
101	root	1.1
102	root	1.13	void set (EV_P)
103			{
104			this->EV_A = EV_A;
105			}
106			#endif
107	root	1.1
108	root	1.13	base ()
109			{
110			ev_init (this, 0);
111			}
112
113	root	1.18	void set_ (void data, void (cb)(EV_P_ ev_watcher *w, int revents))
114	root	1.13	{
115	root	1.17	this->data = data;
116	root	1.18	ev_set_cb (static_cast<ev_watcher *>(this), cb);
117	root	1.13	}
118
119	root	1.19	// method callback
120	root	1.13	template<class K, void (K::*method)(watcher &w, int)>
121			void set (K *object)
122			{
123			set_ (object, method_thunk<K, method>);
124			}
125
126			template<class K, void (K::*method)(watcher &w, int)>
127	root	1.18	static void method_thunk (EV_P_ ev_watcher *w, int revents)
128	root	1.13	{
129	root	1.17	K obj = static_cast<K >(w->data);
130	root	1.18	(obj->method) (static_cast<watcher *>(w), revents);
131	root	1.13	}
132
133	root	1.19	// const method callback
134	root	1.13	template<class K, void (K::*method)(watcher &w, int) const>
135			void set (const K *object)
136			{
137			set_ (object, const_method_thunk<K, method>);
138			}
139
140			template<class K, void (K::*method)(watcher &w, int) const>
141	root	1.18	static void const_method_thunk (EV_P_ ev_watcher *w, int revents)
142	root	1.13	{
143	root	1.17	K obj = static_cast<K >(w->data);
144	root	1.18	(static_cast<K >(w->data)->method) (static_cast<watcher >(w), revents);
145	root	1.13	}
146
147	root	1.19	// function callback
148	root	1.17	template<void (*function)(watcher &w, int)>
149			void set (void *data = 0)
150	root	1.13	{
151	root	1.16	set_ (data, function_thunk<function>);
152	root	1.13	}
153
154			template<void (*function)(watcher &w, int)>
155	root	1.18	static void function_thunk (EV_P_ ev_watcher *w, int revents)
156	root	1.13	{
157	root	1.18	function (static_cast<watcher >(w), revents);
158	root	1.13	}
159
160	root	1.19	// simple callback
161			template<class K, void (K::*method)()>
162			void set (K *object)
163			{
164			set_ (object, method_noargs_thunk<K, method>);
165			}
166
167			template<class K, void (K::*method)()>
168			static void method_noargs_thunk (EV_P_ ev_watcher *w, int revents)
169			{
170			K obj = static_cast<K >(w->data);
171			(obj->*method) ();
172			}
173
174	root	1.13	void operator ()(int events = EV_UNDEF)
175			{
176	root	1.14	return ev_cb (static_cast<ev_watcher *>(this))
177			(static_cast<ev_watcher *>(this), events);
178	root	1.13	}
179
180			bool is_active () const
181	root	1.1	{
182	root	1.13	return ev_is_active (static_cast<const ev_watcher *>(this));
183	root	1.1	}
184
185	root	1.13	bool is_pending () const
186	root	1.1	{
187	root	1.13	return ev_is_pending (static_cast<const ev_watcher *>(this));
188	root	1.1	}
189			};
190
191	llucax	1.26	inline void delay (tstamp interval)
192			{
193			ev_sleep (interval);
194			}
195
196			inline int version_major ()
197			{
198			return ev_version_major ();
199			}
200
201			inline int version_minor ()
202			{
203			return ev_version_minor ();
204			}
205
206			inline unsigned int supported_backends ()
207			{
208			return ev_supported_backends ();
209			}
210
211			inline unsigned int recommended_backends ()
212			{
213			return ev_recommended_backends ();
214			}
215
216			inline unsigned int embeddable_backends ()
217			{
218			return ev_embeddable_backends ();
219			}
220
221			inline void set_allocator (void (cb)(void *ptr, long size))
222			{
223			ev_set_allocator (cb);
224			}
225
226			inline void set_syserr_cb (void (cb)(const char msg))
227			{
228			ev_set_syserr_cb (cb);
229			}
230
231	root	1.1
232			inline ev_tstamp now (EV_P)
233			{
234			return ev_now (EV_A);
235			}
236
237			#if EV_MULTIPLICITY
238	root	1.13	#define EV_CONSTRUCT \
239			(EV_P = EV_DEFAULT) \
240	root	1.1	{ \
241	root	1.13	set (EV_A); \
242			}
243	root	1.1	#else
244	root	1.13	#define EV_CONSTRUCT \
245			() \
246			{ \
247			}
248	root	1.1	#endif
249
250			/* using a template here would require quite a bit more lines,
251			* so a macro solution was chosen */
252	root	1.4	#define EV_BEGIN_WATCHER(cppstem,cstem) \
253	root	1.1	\
254	root	1.13	struct cppstem : base<ev_ ## cstem, cppstem> \
255	root	1.1	{ \
256			void start () \
257			{ \
258			ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this)); \
259			} \
260			\
261			void stop () \
262			{ \
263			ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this)); \
264			} \
265			\
266	root	1.13	cppstem EV_CONSTRUCT \
267	root	1.1	\
268	root	1.3	~cppstem () \
269			{ \
270			stop (); \
271			} \
272			\
273	root	1.13	using base<ev_ ## cstem, cppstem>::set; \
274			\
275	root	1.1	private: \
276			\
277	llucax	1.23	cppstem (const cppstem &o); \
278	root	1.6	\
279	llucax	1.23	cppstem & operator =(const cppstem &o); \
280	root	1.1	\
281			public:
282
283	root	1.4	#define EV_END_WATCHER(cppstem,cstem) \
284	root	1.6	};
285	root	1.4
286			EV_BEGIN_WATCHER (io, io)
287	root	1.1	void set (int fd, int events)
288			{
289			int active = is_active ();
290			if (active) stop ();
291			ev_io_set (static_cast<ev_io *>(this), fd, events);
292			if (active) start ();
293			}
294
295			void set (int events)
296			{
297			int active = is_active ();
298			if (active) stop ();
299			ev_io_set (static_cast<ev_io *>(this), fd, events);
300			if (active) start ();
301			}
302
303			void start (int fd, int events)
304			{
305			set (fd, events);
306			start ();
307			}
308	root	1.4	EV_END_WATCHER (io, io)
309	root	1.1
310	root	1.4	EV_BEGIN_WATCHER (timer, timer)
311	root	1.1	void set (ev_tstamp after, ev_tstamp repeat = 0.)
312			{
313			int active = is_active ();
314			if (active) stop ();
315			ev_timer_set (static_cast<ev_timer *>(this), after, repeat);
316			if (active) start ();
317			}
318
319			void start (ev_tstamp after, ev_tstamp repeat = 0.)
320			{
321			set (after, repeat);
322			start ();
323			}
324
325			void again ()
326			{
327			ev_timer_again (EV_A_ static_cast<ev_timer *>(this));
328			}
329	root	1.4	EV_END_WATCHER (timer, timer)
330	root	1.1
331	root	1.8	#if EV_PERIODIC_ENABLE
332	root	1.4	EV_BEGIN_WATCHER (periodic, periodic)
333	root	1.1	void set (ev_tstamp at, ev_tstamp interval = 0.)
334			{
335			int active = is_active ();
336			if (active) stop ();
337			ev_periodic_set (static_cast<ev_periodic *>(this), at, interval, 0);
338			if (active) start ();
339			}
340
341			void start (ev_tstamp at, ev_tstamp interval = 0.)
342			{
343			set (at, interval);
344			start ();
345			}
346
347			void again ()
348			{
349			ev_periodic_again (EV_A_ static_cast<ev_periodic *>(this));
350			}
351	root	1.4	EV_END_WATCHER (periodic, periodic)
352	root	1.3	#endif
353	root	1.1
354	root	1.4	EV_BEGIN_WATCHER (sig, signal)
355	root	1.1	void set (int signum)
356			{
357			int active = is_active ();
358			if (active) stop ();
359			ev_signal_set (static_cast<ev_signal *>(this), signum);
360			if (active) start ();
361			}
362
363			void start (int signum)
364			{
365			set (signum);
366			start ();
367			}
368	root	1.4	EV_END_WATCHER (sig, signal)
369	root	1.1
370	root	1.4	EV_BEGIN_WATCHER (child, child)
371	root	1.1	void set (int pid)
372			{
373			int active = is_active ();
374			if (active) stop ();
375			ev_child_set (static_cast<ev_child *>(this), pid);
376			if (active) start ();
377			}
378
379			void start (int pid)
380			{
381			set (pid);
382			start ();
383			}
384	root	1.4	EV_END_WATCHER (child, child)
385	root	1.1
386	root	1.8	#if EV_STAT_ENABLE
387			EV_BEGIN_WATCHER (stat, stat)
388			void set (const char *path, ev_tstamp interval = 0.)
389			{
390			int active = is_active ();
391			if (active) stop ();
392			ev_stat_set (static_cast<ev_stat *>(this), path, interval);
393			if (active) start ();
394			}
395
396			void start (const char *path, ev_tstamp interval = 0.)
397			{
398	root	1.12	stop ();
399	root	1.8	set (path, interval);
400			start ();
401			}
402
403			void update ()
404			{
405			ev_stat_stat (EV_A_ static_cast<ev_stat *>(this));
406			}
407			EV_END_WATCHER (stat, stat)
408			#endif
409
410			EV_BEGIN_WATCHER (idle, idle)
411			void set () { }
412			EV_END_WATCHER (idle, idle)
413	root	1.7
414	root	1.8	EV_BEGIN_WATCHER (prepare, prepare)
415			void set () { }
416			EV_END_WATCHER (prepare, prepare)
417
418			EV_BEGIN_WATCHER (check, check)
419			void set () { }
420			EV_END_WATCHER (check, check)
421
422			#if EV_EMBED_ENABLE
423	root	1.7	EV_BEGIN_WATCHER (embed, embed)
424			void start (struct ev_loop *embedded_loop)
425			{
426	root	1.12	stop ();
427			ev_embed_set (static_cast<ev_embed *>(this), embedded_loop);
428	root	1.7	start ();
429			}
430
431			void sweep ()
432			{
433			ev_embed_sweep (EV_A_ static_cast<ev_embed *>(this));
434			}
435			EV_END_WATCHER (embed, embed)
436			#endif
437
438	root	1.10	#if EV_FORK_ENABLE
439			EV_BEGIN_WATCHER (fork, fork)
440			void set () { }
441			EV_END_WATCHER (fork, fork)
442			#endif
443
444	root	1.1	#undef EV_CONSTRUCT
445	root	1.4	#undef EV_BEGIN_WATCHER
446	root	1.7	#undef EV_END_WATCHER
447	root	1.1	}
448
449			#endif
450