server/include/cfperl.h

//
// cfperl.h perl interface
//
#ifndef CFPERL_H__
#define CFPERL_H__

#include <cstdio>

using namespace std;

#include <EXTERN.h>
#include <perl.h>
#include <XSUB.h>

#include <EventAPI.h>

#include "callback.h"

// optimisations/workaround for functions requiring my_perl in scope (anti-bloat)
#undef localtime
#undef srand48
#undef drand48
#undef srandom
#undef readdir
#undef getprotobyname
#undef gethostbyname
#undef ctime
#undef strerror

// same here, massive symbol spamming
#undef do_open
#undef do_close

// perl bug #40256: perl does overwrite those with reentrant versions
// but does not initialise their state structures.
#undef random
#undef crypt

void cfperl_init ();
void cfperl_main ();

enum event_klass
{
  KLASS_NONE,
  KLASS_GLOBAL,
  KLASS_ATTACHABLE,
  KLASS_CLIENT,
  KLASS_PLAYER,
  KLASS_OBJECT,
  KLASS_MAP,
  KLASS_COMMAND,
};

enum event_type
{
# define def(klass,name) EVENT_ ## klass ## _ ## name,
#  include "eventinc.h"
# undef def
  NUM_EVENT_TYPES
};

#define ARG_AV(o)         DT_AV    , static_cast<AV *>   (o)
#define ARG_INT(v)        DT_INT   , static_cast<int>    (v)
#define ARG_INT64(v)      DT_INT64 , static_cast<sint64> (v)
#define ARG_DOUBLE(v)     DT_DOUBLE, static_cast<double> (v)
#define ARG_STRING(v)     DT_STRING, static_cast<const char *> (v)
#define ARG_DATA(s,l)     DT_DATA  , static_cast<const void *> (s), int (l)
#define ARG_OBJECT(o)     DT_OBJECT, (void *)(static_cast<object *>    (o))
#define ARG_MAP(o)        DT_MAP   , (void *)(static_cast<maptile *>   (o))
#define ARG_PLAYER(o)     DT_PLAYER, (void *)(static_cast<player *>    (o))
#define ARG_ARCH(o)       DT_ARCH  , (void *)(static_cast<archetype *> (o))
#define ARG_CLIENT(o)     DT_CLIENT, (void *)(static_cast<client *>    (o))
#define ARG_PARTY(o)      DT_PARTY , (void *)(static_cast<party *>     (o))
#define ARG_REGION(o)     DT_REGION, (void *)(static_cast<region *>    (o))

// the ", ## __VA_ARGS" is, unfortunately, a gnu-cpp extension

// all these return true when the normal event processing should be skipped (if any)
#define INVOKE_GLOBAL(event, ...)          gbl_ev.invoke (EVENT_ ## GLOBAL     ## _ ## event, ## __VA_ARGS__, DT_END)
#define INVOKE_ATTACHABLE(event, obj, ...) (obj)->invoke (EVENT_ ## ATTACHABLE ## _ ## event, ## __VA_ARGS__, DT_END)
#define INVOKE_OBJECT(event, obj, ...)     (obj)->invoke (EVENT_ ## OBJECT     ## _ ## event, ## __VA_ARGS__, DT_END)
#define INVOKE_CLIENT(event, obj, ...)     (obj)->invoke (EVENT_ ## CLIENT     ## _ ## event, ## __VA_ARGS__, DT_END)
#define INVOKE_PLAYER(event, obj, ...)     (obj)->invoke (EVENT_ ## PLAYER     ## _ ## event, ## __VA_ARGS__, DT_END)
#define INVOKE_MAP(event, obj, ...)        (obj)->invoke (EVENT_ ## MAP        ## _ ## event, ## __VA_ARGS__, DT_END)

//TODO should index into @result
#define RESULT(idx,type) cfperl_result_ ## type (idx)
#define RESULT_DOUBLE(idx) RESULT(idx, DOUBLE)
#define RESULT_INT(idx)    RESULT(idx, INT)

double cfperl_result_DOUBLE (int idx);
int cfperl_result_INT (int idx);

struct attachable
{
  static unordered_vector<attachable *> mortals;
  static void check_mortals ();

  enum {
    F_DESTROYED = 0x01,
    F_BORROWED  = 0x02,
  };

  // object is delete'd after the refcount reaches 0
  mutable int refcnt;
  int flags;

  void refcnt_inc () const { ++refcnt; }
  void refcnt_dec () const { --refcnt; }

  // check wether the object has died and destroy
  void refcnt_chk () { if (refcnt <= 0) do_check (); }

  // destroy the object unless it was already destroyed
  // this politely asks everybody interested the reduce
  // the refcount to 0 as soon as possible.
  void destroy ();

  // return wether an object was destroyed already
  bool destroyed () const { return flags & F_DESTROYED; }

  virtual void gather_callbacks (AV *&callbacks, event_type event) const;

#if 0
private:
  static refcounted *rc_first;
  refcounted *rc_next;
#endif

  HV *self;     // CF+ perl self
  AV *cb;       // CF+ callbacks
  shstr attach; // generic extension attachment information

  void optimise ();  // possibly save some memory by destroying unneeded data

  attachable ()
  : flags (0), refcnt (0), self (0), cb (0), attach (0)
  {
  }

  attachable (const attachable &src)
  : flags (0), refcnt (0), self (0), cb (0), attach (src.attach)
  {
  }

  virtual ~attachable ();

  attachable &operator =(const attachable &src);

  bool invoke (event_type event, ...);
  void instantiate ();
  void reattach ();

protected:
  // do the real refcount checking work
  void do_check ();

  // the method that does the real destroy work
  virtual void do_destroy ();
};

// the global object is a pseudo object that cares for the global events
struct global : attachable
{
  void gather_callbacks (AV *&callbacks, event_type event) const;
};

extern struct global gbl_ev;

struct object_freezer : dynbuf
{
  AV *av;

  object_freezer ();
  ~object_freezer ();

  void put (attachable *ext);

  // used only for user-defined key-value pairs
  void put (const shstr &k, const shstr &v)
  {
    add (k);

    if (v)
      add (' '), add (v);

    add ('\n');
  }

  //TODO//temporary, used only for saving body locations
  void put (const char *k, int v)
  {
    add (k);
    add (' ');
    add (sint32 (v));
    add ('\n');
  }

  template<typename T>
  void put_string (keyword k, const T &v)
  {
    int klen = keyword_len [k];
    int vlen = v ? strlen (v) + 1 : 0;

    char *p = (char *)alloc (klen + vlen + 1);

    memcpy (p, keyword_str [k], klen); p += klen;

    if (v)
      {
        *p++ = ' ';  vlen--;
        memcpy (p, v, vlen); p += vlen;
      }

    *p = '\n';
  }

  void put (keyword k, const char *v)
  {
    put_string (k, v);
  }

  void put (keyword k, const shstr &v)
  {
    put_string (k, v);
  }

  void put (keyword k, double v)
  {
    char buf [128];

    snprintf (buf, 128, "%.7g", v);

    put (k, (const char *)buf);
  }

  void put_(keyword k, sint64 v)
  {
    add (keyword_str [k], keyword_len [k]);
    add (' ');
    add (v);
    add ('\n');
  }

  void put_(keyword k, sint32 v)
  {
    add (keyword_str [k], keyword_len [k]);
    add (' ');
    add (v);
    add ('\n');
  }

  void put (keyword kbeg, keyword kend, const shstr &v)
  {
    add (keyword_str [kbeg], keyword_len [kbeg]); add ('\n');

    if (v)
      {
        add (v);
        add ('\n');
      }

    add (keyword_str [kend], keyword_len [kend]); add ('\n');
  }

  void put (keyword k,          float     v) { put (k, (double)v); }
  void put (keyword k,   signed char      v) { put_(k, (sint32)v); }
  void put (keyword k, unsigned char      v) { put_(k, (sint32)v); }
  void put (keyword k,   signed short     v) { put_(k, (sint32)v); }
  void put (keyword k, unsigned short     v) { put_(k, (sint32)v); }
  void put (keyword k,   signed int       v) { put_(k, (sint32)v); }
  void put (keyword k, unsigned int       v) { put_(k, (sint64)v); }
  void put (keyword k,   signed long      v) { put_(k, (sint64)v); }
  void put (keyword k, unsigned long      v) { put_(k, (sint64)v); }
  void put (keyword k,   signed long long v) { put_(k, (sint64)v); }
  void put (keyword k, unsigned long long v) { put_(k, (sint64)v); }

  template<typename T>
  void put (keyword k, const T *v)
  {
    if (v)
      put (k, v->name);
    else
      put (k, (const char *)0);
  }

  template<typename T>
  void put (keyword k, const refptr<T> &v)
  {
    put (k, (T *)v);
  }

  bool save (const char *filename);
  char *as_string (); // like strdup

  operator bool () { return !!av; }
};

// compatibility support, should be removed when no longer needed
int fprintf (object_freezer &freezer, const char *format, ...);
int fputs (const char *s, object_freezer &freezer);

struct object_thawer
{
  SV *text; // text part
  AV *av;   // perl part
  char *line; // current beginning of line
  char *last_value;

  operator bool () { return !!text; }

  object_thawer (const char *filename = 0);
  object_thawer (const char *data, AV *perlav);
  ~object_thawer ();

  void get (attachable *obj, int oid);

  keyword get_kv (); // also parse value for later use

  const char *get_str () { return last_value; } // may be 0

  void get (shstr &sh) const;
  void get_ornull (shstr &sh) const { sh = last_value; }
  void get_ml (keyword kend, shstr &sh);

  sint32 get_sint32 () const;
  sint64 get_sint64 () const;
  double get_double () const;

  void get (float &v)  { v = get_double (); }
  void get (double &v) { v = get_double (); }

  void get (sint8  &i) { i = get_sint32 (); }
  void get (uint8  &i) { i = get_sint32 (); }
  void get (sint16 &i) { i = get_sint32 (); }
  void get (uint16 &i) { i = get_sint32 (); }
  void get (sint32 &i) { i = get_sint32 (); }

  void get (uint32 &i) { i = get_sint64 (); }
  void get (sint64 &i) { i = get_sint64 (); }
};

char *fgets (char *s, int n, object_thawer &thawer);

struct watcher_base
{
  static struct EventAPI *GEventAPI;
};

template<class base>
struct watcher : watcher_base
{
  base *pe;

  void start   (bool repeat = false)        { GEventAPI->start   ((pe_watcher *)pe, repeat); }
  void stop    (bool cancel_events = false) { GEventAPI->stop    ((pe_watcher *)pe, cancel_events); }
  void now     ()                           { GEventAPI->now     ((pe_watcher *)pe); }
  void suspend ()                           { GEventAPI->suspend ((pe_watcher *)pe); }
  void resume  ()                           { GEventAPI->resume  ((pe_watcher *)pe); }

  void prio    (int new_prio)               { ((pe_watcher *)pe)->prio = new_prio; }

  ~watcher ()
  {
    cancel ();
  }

private:
  void cancel  ()                           { GEventAPI->cancel  ((pe_watcher *)pe); } // private
};

struct iw : watcher<pe_idle>, callback<void (iw &)>
{
  template<class O, class M>
  iw (O object, M method)
  : callback<void (iw &)> (object, method)
  {
    alloc ();
  }

private:
  void alloc ();
};

struct iow : watcher<pe_io>, callback<void (iow &, int)>
{
  template<class O, class M>
  iow (O object, M method)
  : callback<void (iow &, int)> (object, method)
  {
    alloc ();
  }

  void fd (int fd);
  int poll ();
  void poll (int events);

private:
  void alloc ();
};

#endif

Revision:	1.41
Committed:	Mon Dec 25 11:25:49 2006 UTC (17 years, 5 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.40:	+79 -71 lines
Log Message:	- small, but subtle, rewrite of object management - perl will now keep attachable objects alive - objects are now refcounted - refcouts need to be tested explicitly (refcnt_chk) - explicit destroy is required current - explicit destroy asks "nicely" for the object to self destruct, if possible - refcounts will be used during mortal killing - minor bugfixes, optimisations etc. - some former hacks removed.
#	User	Rev	Content
1	root	1.1	//
2			// cfperl.h perl interface
3			//
4	root	1.2	#ifndef CFPERL_H__
5			#define CFPERL_H__
6
7	root	1.16	#include <cstdio>
8
9			using namespace std;
10
11			#include <EXTERN.h>
12			#include <perl.h>
13	root	1.20	#include <XSUB.h>
14	root	1.16
15	root	1.36	#include <EventAPI.h>
16
17			#include "callback.h"
18
19	root	1.16	// optimisations/workaround for functions requiring my_perl in scope (anti-bloat)
20			#undef localtime
21			#undef srand48
22			#undef drand48
23			#undef srandom
24			#undef readdir
25			#undef getprotobyname
26			#undef gethostbyname
27			#undef ctime
28			#undef strerror
29
30	root	1.39	// same here, massive symbol spamming
31			#undef do_open
32			#undef do_close
33
34	root	1.16	// perl bug #40256: perl does overwrite those with reentrant versions
35			// but does not initialise their state structures.
36			#undef random
37			#undef crypt
38
39	root	1.7	void cfperl_init ();
40			void cfperl_main ();
41
42	root	1.6	enum event_klass
43			{
44	root	1.11	KLASS_NONE,
45	root	1.3	KLASS_GLOBAL,
46	root	1.41	KLASS_ATTACHABLE,
47	root	1.40	KLASS_CLIENT,
48	root	1.3	KLASS_PLAYER,
49			KLASS_OBJECT,
50			KLASS_MAP,
51	root	1.33	KLASS_COMMAND,
52	root	1.3	};
53
54	root	1.6	enum event_type
55			{
56	root	1.7	# define def(klass,name) EVENT_ ## klass ## _ ## name,
57	root	1.2	# include "eventinc.h"
58			# undef def
59	root	1.4	NUM_EVENT_TYPES
60	root	1.2	};
61
62	root	1.41	#define ARG_AV(o) DT_AV , static_cast<AV *> (o)
63			#define ARG_INT(v) DT_INT , static_cast<int> (v)
64			#define ARG_INT64(v) DT_INT64 , static_cast<sint64> (v)
65			#define ARG_DOUBLE(v) DT_DOUBLE, static_cast<double> (v)
66			#define ARG_STRING(v) DT_STRING, static_cast<const char *> (v)
67			#define ARG_DATA(s,l) DT_DATA , static_cast<const void *> (s), int (l)
68			#define ARG_OBJECT(o) DT_OBJECT, (void )(static_cast<object > (o))
69			#define ARG_MAP(o) DT_MAP , (void )(static_cast<maptile > (o))
70			#define ARG_PLAYER(o) DT_PLAYER, (void )(static_cast<player > (o))
71			#define ARG_ARCH(o) DT_ARCH , (void )(static_cast<archetype > (o))
72			#define ARG_CLIENT(o) DT_CLIENT, (void )(static_cast<client > (o))
73			#define ARG_PARTY(o) DT_PARTY , (void )(static_cast<party > (o))
74			#define ARG_REGION(o) DT_REGION, (void )(static_cast<region > (o))
75	root	1.3
76			// the ", ## __VA_ARGS" is, unfortunately, a gnu-cpp extension
77	root	1.2
78	root	1.4	// all these return true when the normal event processing should be skipped (if any)
79	root	1.41	#define INVOKE_GLOBAL(event, ...) gbl_ev.invoke (EVENT_ ## GLOBAL ## _ ## event, ## __VA_ARGS__, DT_END)
80			#define INVOKE_ATTACHABLE(event, obj, ...) (obj)->invoke (EVENT_ ## ATTACHABLE ## _ ## event, ## __VA_ARGS__, DT_END)
81			#define INVOKE_OBJECT(event, obj, ...) (obj)->invoke (EVENT_ ## OBJECT ## _ ## event, ## __VA_ARGS__, DT_END)
82			#define INVOKE_CLIENT(event, obj, ...) (obj)->invoke (EVENT_ ## CLIENT ## _ ## event, ## __VA_ARGS__, DT_END)
83			#define INVOKE_PLAYER(event, obj, ...) (obj)->invoke (EVENT_ ## PLAYER ## _ ## event, ## __VA_ARGS__, DT_END)
84			#define INVOKE_MAP(event, obj, ...) (obj)->invoke (EVENT_ ## MAP ## _ ## event, ## __VA_ARGS__, DT_END)
85	root	1.3
86	root	1.7	//TODO should index into @result
87			#define RESULT(idx,type) cfperl_result_ ## type (idx)
88	root	1.33	#define RESULT_DOUBLE(idx) RESULT(idx, DOUBLE)
89			#define RESULT_INT(idx) RESULT(idx, INT)
90	root	1.7
91	root	1.34	double cfperl_result_DOUBLE (int idx);
92			int cfperl_result_INT (int idx);
93	root	1.7
94	root	1.41	struct attachable
95	root	1.6	{
96	root	1.41	static unordered_vector<attachable *> mortals;
97			static void check_mortals ();
98
99			enum {
100			F_DESTROYED = 0x01,
101			F_BORROWED = 0x02,
102			};
103
104			// object is delete'd after the refcount reaches 0
105			mutable int refcnt;
106			int flags;
107
108			void refcnt_inc () const { ++refcnt; }
109			void refcnt_dec () const { --refcnt; }
110
111			// check wether the object has died and destroy
112			void refcnt_chk () { if (refcnt <= 0) do_check (); }
113
114			// destroy the object unless it was already destroyed
115			// this politely asks everybody interested the reduce
116			// the refcount to 0 as soon as possible.
117			void destroy ();
118
119			// return wether an object was destroyed already
120			bool destroyed () const { return flags & F_DESTROYED; }
121
122			virtual void gather_callbacks (AV *&callbacks, event_type event) const;
123
124			#if 0
125			private:
126			static refcounted *rc_first;
127			refcounted *rc_next;
128			#endif
129
130			HV *self; // CF+ perl self
131	root	1.35	AV *cb; // CF+ callbacks
132	root	1.21	shstr attach; // generic extension attachment information
133	root	1.6
134	root	1.13	void optimise (); // possibly save some memory by destroying unneeded data
135	root	1.8
136	root	1.41	attachable ()
137			: flags (0), refcnt (0), self (0), cb (0), attach (0)
138	root	1.8	{
139			}
140	root	1.22
141	root	1.41	attachable (const attachable &src)
142			: flags (0), refcnt (0), self (0), cb (0), attach (src.attach)
143	root	1.22	{
144			}
145
146	root	1.41	virtual ~attachable ();
147
148			attachable &operator =(const attachable &src);
149
150			bool invoke (event_type event, ...);
151			void instantiate ();
152			void reattach ();
153	root	1.24
154	root	1.41	protected:
155			// do the real refcount checking work
156			void do_check ();
157	root	1.25
158	root	1.41	// the method that does the real destroy work
159			virtual void do_destroy ();
160	root	1.6	};
161
162	root	1.41	// the global object is a pseudo object that cares for the global events
163			struct global : attachable
164	root	1.6	{
165	root	1.41	void gather_callbacks (AV *&callbacks, event_type event) const;
166	root	1.6	};
167
168	root	1.41	extern struct global gbl_ev;
169
170	root	1.19	struct object_freezer : dynbuf
171	root	1.7	{
172	root	1.17	AV *av;
173	root	1.12
174	root	1.17	object_freezer ();
175	root	1.8	~object_freezer ();
176
177	root	1.41	void put (attachable *ext);
178	root	1.15
179	root	1.29	// used only for user-defined key-value pairs
180			void put (const shstr &k, const shstr &v)
181	root	1.20	{
182			add (k);
183
184			if (v)
185	root	1.22	add (' '), add (v);
186	root	1.20
187			add ('\n');
188			}
189
190	root	1.29	//TODO//temporary, used only for saving body locations
191	root	1.20	void put (const char *k, int v)
192			{
193			add (k);
194			add (' ');
195			add (sint32 (v));
196			add ('\n');
197			}
198	root	1.19
199	root	1.29	template<typename T>
200			void put_string (keyword k, const T &v)
201	root	1.20	{
202			int klen = keyword_len [k];
203	root	1.22	int vlen = v ? strlen (v) + 1 : 0;
204
205			char p = (char )alloc (klen + vlen + 1);
206
207			memcpy (p, keyword_str [k], klen); p += klen;
208
209			if (v)
210			{
211	root	1.29	*p++ = ' '; vlen--;
212	root	1.22	memcpy (p, v, vlen); p += vlen;
213			}
214
215			*p = '\n';
216			}
217
218	root	1.29	void put (keyword k, const char *v)
219			{
220			put_string (k, v);
221			}
222
223	root	1.22	void put (keyword k, const shstr &v)
224			{
225	root	1.29	put_string (k, v);
226	root	1.20	}
227	root	1.19
228	root	1.20	void put (keyword k, double v)
229			{
230			char buf [128];
231
232			snprintf (buf, 128, "%.7g", v);
233
234			put (k, (const char *)buf);
235			}
236
237			void put_(keyword k, sint64 v)
238			{
239			add (keyword_str [k], keyword_len [k]);
240			add (' ');
241			add (v);
242			add ('\n');
243			}
244
245			void put_(keyword k, sint32 v)
246			{
247			add (keyword_str [k], keyword_len [k]);
248			add (' ');
249			add (v);
250			add ('\n');
251			}
252
253	root	1.23	void put (keyword kbeg, keyword kend, const shstr &v)
254	root	1.20	{
255			add (keyword_str [kbeg], keyword_len [kbeg]); add ('\n');
256
257			if (v)
258			{
259			add (v);
260			add ('\n');
261			}
262
263			add (keyword_str [kend], keyword_len [kend]); add ('\n');
264			}
265
266			void put (keyword k, float v) { put (k, (double)v); }
267	root	1.19	void put (keyword k, signed char v) { put_(k, (sint32)v); }
268			void put (keyword k, unsigned char v) { put_(k, (sint32)v); }
269			void put (keyword k, signed short v) { put_(k, (sint32)v); }
270			void put (keyword k, unsigned short v) { put_(k, (sint32)v); }
271			void put (keyword k, signed int v) { put_(k, (sint32)v); }
272			void put (keyword k, unsigned int v) { put_(k, (sint64)v); }
273			void put (keyword k, signed long v) { put_(k, (sint64)v); }
274			void put (keyword k, unsigned long v) { put_(k, (sint64)v); }
275			void put (keyword k, signed long long v) { put_(k, (sint64)v); }
276			void put (keyword k, unsigned long long v) { put_(k, (sint64)v); }
277
278			template<typename T>
279	root	1.32	void put (keyword k, const T *v)
280	root	1.18	{
281	root	1.23	if (v)
282			put (k, v->name);
283			else
284			put (k, (const char *)0);
285	root	1.18	}
286
287	root	1.32	template<typename T>
288			void put (keyword k, const refptr<T> &v)
289			{
290			put (k, (T *)v);
291			}
292
293	root	1.17	bool save (const char *filename);
294	root	1.31	char *as_string (); // like strdup
295	root	1.17
296	root	1.16	operator bool () { return !!av; }
297	root	1.7	};
298
299	root	1.17	// compatibility support, should be removed when no longer needed
300			int fprintf (object_freezer &freezer, const char *format, ...);
301			int fputs (const char *s, object_freezer &freezer);
302
303			struct object_thawer
304	root	1.7	{
305	root	1.21	SV *text; // text part
306			AV *av; // perl part
307			char *line; // current beginning of line
308			char *last_value;
309
310			operator bool () { return !!text; }
311	root	1.16
312	root	1.14	object_thawer (const char *filename = 0);
313	root	1.30	object_thawer (const char data, AV perlav);
314	root	1.8	~object_thawer ();
315
316	root	1.41	void get (attachable *obj, int oid);
317	root	1.15
318	root	1.21	keyword get_kv (); // also parse value for later use
319
320			const char *get_str () { return last_value; } // may be 0
321	root	1.17
322	root	1.21	void get (shstr &sh) const;
323			void get_ornull (shstr &sh) const { sh = last_value; }
324			void get_ml (keyword kend, shstr &sh);
325
326			sint32 get_sint32 () const;
327			sint64 get_sint64 () const;
328			double get_double () const;
329
330			void get (float &v) { v = get_double (); }
331			void get (double &v) { v = get_double (); }
332
333			void get (sint8 &i) { i = get_sint32 (); }
334			void get (uint8 &i) { i = get_sint32 (); }
335			void get (sint16 &i) { i = get_sint32 (); }
336			void get (uint16 &i) { i = get_sint32 (); }
337			void get (sint32 &i) { i = get_sint32 (); }
338
339			void get (uint32 &i) { i = get_sint64 (); }
340			void get (sint64 &i) { i = get_sint64 (); }
341	root	1.7	};
342	root	1.2
343	root	1.21	char fgets (char s, int n, object_thawer &thawer);
344
345	root	1.36	struct watcher_base
346			{
347			static struct EventAPI *GEventAPI;
348			};
349
350			template<class base>
351			struct watcher : watcher_base
352			{
353			base *pe;
354
355			void start (bool repeat = false) { GEventAPI->start ((pe_watcher *)pe, repeat); }
356			void stop (bool cancel_events = false) { GEventAPI->stop ((pe_watcher *)pe, cancel_events); }
357			void now () { GEventAPI->now ((pe_watcher *)pe); }
358			void suspend () { GEventAPI->suspend ((pe_watcher *)pe); }
359			void resume () { GEventAPI->resume ((pe_watcher *)pe); }
360
361			void prio (int new_prio) { ((pe_watcher *)pe)->prio = new_prio; }
362
363			~watcher ()
364			{
365			cancel ();
366			}
367
368			private:
369			void cancel () { GEventAPI->cancel ((pe_watcher *)pe); } // private
370			};
371
372	root	1.38	struct iw : watcher<pe_idle>, callback<void (iw &)>
373			{
374			template<class O, class M>
375			iw (O object, M method)
376			: callback<void (iw &)> (object, method)
377			{
378			alloc ();
379			}
380
381			private:
382			void alloc ();
383			};
384
385	root	1.36	struct iow : watcher<pe_io>, callback<void (iow &, int)>
386			{
387			template<class O, class M>
388			iow (O object, M method)
389			: callback<void (iow &, int)> (object, method)
390			{
391			alloc ();
392			}
393
394	root	1.38	void fd (int fd);
395	root	1.36	int poll ();
396	root	1.38	void poll (int events);
397	root	1.36
398			private:
399			void alloc ();
400			};
401
402	root	1.2	#endif
403	root	1.3