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 *data, void (*cb)(EV_P_ ev_watcher *w, int revents))
    {
      this->data = data;
      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)
    {
      K *obj = static_cast<K *>(w->data);
      (obj->*method) (*static_cast<watcher *>(w), 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)
    {
      K *obj = static_cast<K *>(w->data);
      (static_cast<K *>(w->data)->*method) (*static_cast<watcher *>(w), revents);
    }

    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);
    }

    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:	1.18
Committed:	Tue Dec 11 03:18:33 2007 UTC (16 years, 5 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-1_8, rel-1_81
Changes since 1.17:	+8 -8 lines
Log Message:	fucked up++ watchers again
#	Content
1	#ifndef EVPP_H__
2	#define EVPP_H__
3
4	#include "ev.h"
5
6	namespace ev {
7
8	template<class ev_watcher, class watcher>
9	struct base : ev_watcher
10	{
11	#if EV_MULTIPLICITY
12	EV_P;
13
14	void set (EV_P)
15	{
16	this->EV_A = EV_A;
17	}
18	#endif
19
20	base ()
21	{
22	ev_init (this, 0);
23	}
24
25	void set_ (void data, void (cb)(EV_P_ ev_watcher *w, int revents))
26	{
27	this->data = data;
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	static void method_thunk (EV_P_ ev_watcher *w, int revents)
39	{
40	K obj = static_cast<K >(w->data);
41	(obj->method) (static_cast<watcher *>(w), revents);
42	}
43
44	template<class K, void (K::*method)(watcher &w, int) const>
45	void set (const K *object)
46	{
47	set_ (object, const_method_thunk<K, method>);
48	}
49
50	template<class K, void (K::*method)(watcher &w, int) const>
51	static void const_method_thunk (EV_P_ ev_watcher *w, int revents)
52	{
53	K obj = static_cast<K >(w->data);
54	(static_cast<K >(w->data)->method) (static_cast<watcher >(w), revents);
55	}
56
57	template<void (*function)(watcher &w, int)>
58	void set (void *data = 0)
59	{
60	set_ (data, function_thunk<function>);
61	}
62
63	template<void (*function)(watcher &w, int)>
64	static void function_thunk (EV_P_ ev_watcher *w, int revents)
65	{
66	function (static_cast<watcher >(w), revents);
67	}
68
69	void operator ()(int events = EV_UNDEF)
70	{
71	return ev_cb (static_cast<ev_watcher *>(this))
72	(static_cast<ev_watcher *>(this), events);
73	}
74
75	bool is_active () const
76	{
77	return ev_is_active (static_cast<const ev_watcher *>(this));
78	}
79
80	bool is_pending () const
81	{
82	return ev_is_pending (static_cast<const ev_watcher *>(this));
83	}
84	};
85
86	enum {
87	UNDEF = EV_UNDEF,
88	NONE = EV_NONE,
89	READ = EV_READ,
90	WRITE = EV_WRITE,
91	TIMEOUT = EV_TIMEOUT,
92	PERIODIC = EV_PERIODIC,
93	SIGNAL = EV_SIGNAL,
94	CHILD = EV_CHILD,
95	STAT = EV_STAT,
96	IDLE = EV_IDLE,
97	CHECK = EV_CHECK,
98	PREPARE = EV_PREPARE,
99	FORK = EV_FORK,
100	EMBED = EV_EMBED,
101	ERROR = EV_ERROR,
102	};
103
104	typedef ev_tstamp tstamp;
105
106	inline ev_tstamp now (EV_P)
107	{
108	return ev_now (EV_A);
109	}
110
111	#if EV_MULTIPLICITY
112	#define EV_CONSTRUCT \
113	(EV_P = EV_DEFAULT) \
114	{ \
115	set (EV_A); \
116	}
117	#else
118	#define EV_CONSTRUCT \
119	() \
120	{ \
121	}
122	#endif
123
124	/* using a template here would require quite a bit more lines,
125	* so a macro solution was chosen */
126	#define EV_BEGIN_WATCHER(cppstem,cstem) \
127	\
128	struct cppstem : base<ev_ ## cstem, cppstem> \
129	{ \
130	void start () \
131	{ \
132	ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this)); \
133	} \
134	\
135	void stop () \
136	{ \
137	ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this)); \
138	} \
139	\
140	cppstem EV_CONSTRUCT \
141	\
142	~cppstem () \
143	{ \
144	stop (); \
145	} \
146	\
147	using base<ev_ ## cstem, cppstem>::set; \
148	\
149	private: \
150	\
151	cppstem (const cppstem &o) \
152	{ /* disabled */ } \
153	\
154	void operator =(const cppstem &o) { /* disabled */ } \
155	\
156	public:
157
158	#define EV_END_WATCHER(cppstem,cstem) \
159	};
160
161	EV_BEGIN_WATCHER (io, io)
162	void set (int fd, int events)
163	{
164	int active = is_active ();
165	if (active) stop ();
166	ev_io_set (static_cast<ev_io *>(this), fd, events);
167	if (active) start ();
168	}
169
170	void set (int events)
171	{
172	int active = is_active ();
173	if (active) stop ();
174	ev_io_set (static_cast<ev_io *>(this), fd, events);
175	if (active) start ();
176	}
177
178	void start (int fd, int events)
179	{
180	set (fd, events);
181	start ();
182	}
183	EV_END_WATCHER (io, io)
184
185	EV_BEGIN_WATCHER (timer, timer)
186	void set (ev_tstamp after, ev_tstamp repeat = 0.)
187	{
188	int active = is_active ();
189	if (active) stop ();
190	ev_timer_set (static_cast<ev_timer *>(this), after, repeat);
191	if (active) start ();
192	}
193
194	void start (ev_tstamp after, ev_tstamp repeat = 0.)
195	{
196	set (after, repeat);
197	start ();
198	}
199
200	void again ()
201	{
202	ev_timer_again (EV_A_ static_cast<ev_timer *>(this));
203	}
204	EV_END_WATCHER (timer, timer)
205
206	#if EV_PERIODIC_ENABLE
207	EV_BEGIN_WATCHER (periodic, periodic)
208	void set (ev_tstamp at, ev_tstamp interval = 0.)
209	{
210	int active = is_active ();
211	if (active) stop ();
212	ev_periodic_set (static_cast<ev_periodic *>(this), at, interval, 0);
213	if (active) start ();
214	}
215
216	void start (ev_tstamp at, ev_tstamp interval = 0.)
217	{
218	set (at, interval);
219	start ();
220	}
221
222	void again ()
223	{
224	ev_periodic_again (EV_A_ static_cast<ev_periodic *>(this));
225	}
226	EV_END_WATCHER (periodic, periodic)
227	#endif
228
229	EV_BEGIN_WATCHER (sig, signal)
230	void set (int signum)
231	{
232	int active = is_active ();
233	if (active) stop ();
234	ev_signal_set (static_cast<ev_signal *>(this), signum);
235	if (active) start ();
236	}
237
238	void start (int signum)
239	{
240	set (signum);
241	start ();
242	}
243	EV_END_WATCHER (sig, signal)
244
245	EV_BEGIN_WATCHER (child, child)
246	void set (int pid)
247	{
248	int active = is_active ();
249	if (active) stop ();
250	ev_child_set (static_cast<ev_child *>(this), pid);
251	if (active) start ();
252	}
253
254	void start (int pid)
255	{
256	set (pid);
257	start ();
258	}
259	EV_END_WATCHER (child, child)
260
261	#if EV_STAT_ENABLE
262	EV_BEGIN_WATCHER (stat, stat)
263	void set (const char *path, ev_tstamp interval = 0.)
264	{
265	int active = is_active ();
266	if (active) stop ();
267	ev_stat_set (static_cast<ev_stat *>(this), path, interval);
268	if (active) start ();
269	}
270
271	void start (const char *path, ev_tstamp interval = 0.)
272	{
273	stop ();
274	set (path, interval);
275	start ();
276	}
277
278	void update ()
279	{
280	ev_stat_stat (EV_A_ static_cast<ev_stat *>(this));
281	}
282	EV_END_WATCHER (stat, stat)
283	#endif
284
285	EV_BEGIN_WATCHER (idle, idle)
286	void set () { }
287	EV_END_WATCHER (idle, idle)
288
289	EV_BEGIN_WATCHER (prepare, prepare)
290	void set () { }
291	EV_END_WATCHER (prepare, prepare)
292
293	EV_BEGIN_WATCHER (check, check)
294	void set () { }
295	EV_END_WATCHER (check, check)
296
297	#if EV_EMBED_ENABLE
298	EV_BEGIN_WATCHER (embed, embed)
299	void start (struct ev_loop *embedded_loop)
300	{
301	stop ();
302	ev_embed_set (static_cast<ev_embed *>(this), embedded_loop);
303	start ();
304	}
305
306	void sweep ()
307	{
308	ev_embed_sweep (EV_A_ static_cast<ev_embed *>(this));
309	}
310	EV_END_WATCHER (embed, embed)
311	#endif
312
313	#if EV_FORK_ENABLE
314	EV_BEGIN_WATCHER (fork, fork)
315	void set () { }
316	EV_END_WATCHER (fork, fork)
317	#endif
318
319	#undef EV_CONSTRUCT
320	#undef EV_BEGIN_WATCHER
321	#undef EV_END_WATCHER
322	}
323
324	#endif
325