libev/ev%2B%2B.h

#ifndef EVPP_H__
#define EVPP_H__

#include "ev.h"

namespace ev {

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

    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)
    {
      watcher *self = static_cast<watcher *>(w);
      K *obj = static_cast<K *>(self->data);
      (obj->*method) (*self, revents);
    }

    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)
    {
      watcher *self = static_cast<watcher *>(w);
      K *obj = static_cast<K *>(self->data);
      (obj->*method) (*self, revents);
    }

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

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

    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));
    }
  };

  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,
  };

  typedef ev_tstamp tstamp;

  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)                                                          \
    { /* disabled */ }                                                                  \
                                                                                        \
    void operator =(const cppstem &o) { /* disabled */ }                                \
                                                                                        \
  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:	1.15
Committed:	Wed Dec 5 00:09:35 2007 UTC (16 years, 5 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-1_71, rel-1_6
Changes since 1.14:	+4 -4 lines
Log Message:	applied fix by chris brody
#	User	Rev	Content
1	root	1.1	#ifndef EVPP_H__
2			#define EVPP_H__
3
4	root	1.7	#include "ev.h"
5	root	1.1
6			namespace ev {
7
8	root	1.13	template<class ev_watcher, class watcher>
9			struct base : ev_watcher
10	root	1.1	{
11	root	1.13	#if EV_MULTIPLICITY
12			EV_P;
13	root	1.1
14	root	1.13	void set (EV_P)
15			{
16			this->EV_A = EV_A;
17			}
18			#endif
19	root	1.1
20	root	1.13	base ()
21			{
22			ev_init (this, 0);
23			}
24
25	root	1.15	void set_ (void object, void (cb)(EV_P_ ev_watcher *w, int revents))
26	root	1.13	{
27			this->data = object;
28			ev_set_cb (static_cast<ev_watcher *>(this), cb);
29			}
30
31			template<class K, void (K::*method)(watcher &w, int)>
32			void set (K *object)
33			{
34			set_ (object, method_thunk<K, method>);
35			}
36
37			template<class K, void (K::*method)(watcher &w, int)>
38	root	1.15	static void method_thunk (EV_P_ ev_watcher *w, int revents)
39	root	1.13	{
40			watcher self = static_cast<watcher >(w);
41			K obj = static_cast<K >(self->data);
42			(obj->method) (self, revents);
43			}
44
45			template<class K, void (K::*method)(watcher &w, int) const>
46			void set (const K *object)
47			{
48			set_ (object, const_method_thunk<K, method>);
49			}
50
51			template<class K, void (K::*method)(watcher &w, int) const>
52	root	1.15	static void const_method_thunk (EV_P_ ev_watcher *w, int revents)
53	root	1.13	{
54			watcher self = static_cast<watcher >(w);
55			K obj = static_cast<K >(self->data);
56			(obj->method) (self, revents);
57			}
58
59			template<void (*function)(watcher &w, int)>
60			void set ()
61			{
62			set_ (0, function_thunk<function>);
63			}
64
65			template<void (*function)(watcher &w, int)>
66	root	1.15	static void function_thunk (EV_P_ ev_watcher *w, int revents)
67	root	1.13	{
68			watcher self = static_cast<watcher >(w);
69			function (*self, revents);
70			}
71
72			void operator ()(int events = EV_UNDEF)
73			{
74	root	1.14	return ev_cb (static_cast<ev_watcher *>(this))
75			(static_cast<ev_watcher *>(this), events);
76	root	1.13	}
77
78			bool is_active () const
79	root	1.1	{
80	root	1.13	return ev_is_active (static_cast<const ev_watcher *>(this));
81	root	1.1	}
82
83	root	1.13	bool is_pending () const
84	root	1.1	{
85	root	1.13	return ev_is_pending (static_cast<const ev_watcher *>(this));
86	root	1.1	}
87			};
88
89	root	1.2	enum {
90			UNDEF = EV_UNDEF,
91			NONE = EV_NONE,
92			READ = EV_READ,
93			WRITE = EV_WRITE,
94			TIMEOUT = EV_TIMEOUT,
95			PERIODIC = EV_PERIODIC,
96			SIGNAL = EV_SIGNAL,
97	root	1.9	CHILD = EV_CHILD,
98			STAT = EV_STAT,
99	root	1.2	IDLE = EV_IDLE,
100			CHECK = EV_CHECK,
101			PREPARE = EV_PREPARE,
102	root	1.9	FORK = EV_FORK,
103			EMBED = EV_EMBED,
104	root	1.2	ERROR = EV_ERROR,
105			};
106
107	root	1.1	typedef ev_tstamp tstamp;
108
109			inline ev_tstamp now (EV_P)
110			{
111			return ev_now (EV_A);
112			}
113
114			#if EV_MULTIPLICITY
115	root	1.13	#define EV_CONSTRUCT \
116			(EV_P = EV_DEFAULT) \
117	root	1.1	{ \
118	root	1.13	set (EV_A); \
119			}
120	root	1.1	#else
121	root	1.13	#define EV_CONSTRUCT \
122			() \
123			{ \
124			}
125	root	1.1	#endif
126
127			/* using a template here would require quite a bit more lines,
128			* so a macro solution was chosen */
129	root	1.4	#define EV_BEGIN_WATCHER(cppstem,cstem) \
130	root	1.1	\
131	root	1.13	struct cppstem : base<ev_ ## cstem, cppstem> \
132	root	1.1	{ \
133			void start () \
134			{ \
135			ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this)); \
136			} \
137			\
138			void stop () \
139			{ \
140			ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this)); \
141			} \
142			\
143	root	1.13	cppstem EV_CONSTRUCT \
144	root	1.1	\
145	root	1.3	~cppstem () \
146			{ \
147			stop (); \
148			} \
149			\
150	root	1.13	using base<ev_ ## cstem, cppstem>::set; \
151			\
152	root	1.1	private: \
153			\
154			cppstem (const cppstem &o) \
155			{ /* disabled */ } \
156	root	1.6	\
157	root	1.1	void operator =(const cppstem &o) { /* disabled */ } \
158			\
159			public:
160
161	root	1.4	#define EV_END_WATCHER(cppstem,cstem) \
162	root	1.6	};
163	root	1.4
164			EV_BEGIN_WATCHER (io, io)
165	root	1.1	void set (int fd, int events)
166			{
167			int active = is_active ();
168			if (active) stop ();
169			ev_io_set (static_cast<ev_io *>(this), fd, events);
170			if (active) start ();
171			}
172
173			void set (int events)
174			{
175			int active = is_active ();
176			if (active) stop ();
177			ev_io_set (static_cast<ev_io *>(this), fd, events);
178			if (active) start ();
179			}
180
181			void start (int fd, int events)
182			{
183			set (fd, events);
184			start ();
185			}
186	root	1.4	EV_END_WATCHER (io, io)
187	root	1.1
188	root	1.4	EV_BEGIN_WATCHER (timer, timer)
189	root	1.1	void set (ev_tstamp after, ev_tstamp repeat = 0.)
190			{
191			int active = is_active ();
192			if (active) stop ();
193			ev_timer_set (static_cast<ev_timer *>(this), after, repeat);
194			if (active) start ();
195			}
196
197			void start (ev_tstamp after, ev_tstamp repeat = 0.)
198			{
199			set (after, repeat);
200			start ();
201			}
202
203			void again ()
204			{
205			ev_timer_again (EV_A_ static_cast<ev_timer *>(this));
206			}
207	root	1.4	EV_END_WATCHER (timer, timer)
208	root	1.1
209	root	1.8	#if EV_PERIODIC_ENABLE
210	root	1.4	EV_BEGIN_WATCHER (periodic, periodic)
211	root	1.1	void set (ev_tstamp at, ev_tstamp interval = 0.)
212			{
213			int active = is_active ();
214			if (active) stop ();
215			ev_periodic_set (static_cast<ev_periodic *>(this), at, interval, 0);
216			if (active) start ();
217			}
218
219			void start (ev_tstamp at, ev_tstamp interval = 0.)
220			{
221			set (at, interval);
222			start ();
223			}
224
225			void again ()
226			{
227			ev_periodic_again (EV_A_ static_cast<ev_periodic *>(this));
228			}
229	root	1.4	EV_END_WATCHER (periodic, periodic)
230	root	1.3	#endif
231	root	1.1
232	root	1.4	EV_BEGIN_WATCHER (sig, signal)
233	root	1.1	void set (int signum)
234			{
235			int active = is_active ();
236			if (active) stop ();
237			ev_signal_set (static_cast<ev_signal *>(this), signum);
238			if (active) start ();
239			}
240
241			void start (int signum)
242			{
243			set (signum);
244			start ();
245			}
246	root	1.4	EV_END_WATCHER (sig, signal)
247	root	1.1
248	root	1.4	EV_BEGIN_WATCHER (child, child)
249	root	1.1	void set (int pid)
250			{
251			int active = is_active ();
252			if (active) stop ();
253			ev_child_set (static_cast<ev_child *>(this), pid);
254			if (active) start ();
255			}
256
257			void start (int pid)
258			{
259			set (pid);
260			start ();
261			}
262	root	1.4	EV_END_WATCHER (child, child)
263	root	1.1
264	root	1.8	#if EV_STAT_ENABLE
265			EV_BEGIN_WATCHER (stat, stat)
266			void set (const char *path, ev_tstamp interval = 0.)
267			{
268			int active = is_active ();
269			if (active) stop ();
270			ev_stat_set (static_cast<ev_stat *>(this), path, interval);
271			if (active) start ();
272			}
273
274			void start (const char *path, ev_tstamp interval = 0.)
275			{
276	root	1.12	stop ();
277	root	1.8	set (path, interval);
278			start ();
279			}
280
281			void update ()
282			{
283			ev_stat_stat (EV_A_ static_cast<ev_stat *>(this));
284			}
285			EV_END_WATCHER (stat, stat)
286			#endif
287
288			EV_BEGIN_WATCHER (idle, idle)
289			void set () { }
290			EV_END_WATCHER (idle, idle)
291	root	1.7
292	root	1.8	EV_BEGIN_WATCHER (prepare, prepare)
293			void set () { }
294			EV_END_WATCHER (prepare, prepare)
295
296			EV_BEGIN_WATCHER (check, check)
297			void set () { }
298			EV_END_WATCHER (check, check)
299
300			#if EV_EMBED_ENABLE
301	root	1.7	EV_BEGIN_WATCHER (embed, embed)
302			void start (struct ev_loop *embedded_loop)
303			{
304	root	1.12	stop ();
305			ev_embed_set (static_cast<ev_embed *>(this), embedded_loop);
306	root	1.7	start ();
307			}
308
309			void sweep ()
310			{
311			ev_embed_sweep (EV_A_ static_cast<ev_embed *>(this));
312			}
313			EV_END_WATCHER (embed, embed)
314			#endif
315
316	root	1.10	#if EV_FORK_ENABLE
317			EV_BEGIN_WATCHER (fork, fork)
318			void set () { }
319			EV_END_WATCHER (fork, fork)
320			#endif
321
322	root	1.1	#undef EV_CONSTRUCT
323	root	1.4	#undef EV_BEGIN_WATCHER
324	root	1.7	#undef EV_END_WATCHER
325	root	1.1	}
326
327			#endif
328