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Comparing deliantra/server/include/cfperl.h (file contents):
Revision 1.22 by root, Mon Sep 4 11:07:59 2006 UTC vs.
Revision 1.76 by root, Mon Jun 4 12:19:08 2007 UTC

1/*
2 * This file is part of Crossfire TRT, the Multiplayer Online Role Playing Game.
3 *
4 * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team
5 * Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team
6 * Copyright (©) 1992,2007 Frank Tore Johansen
7 *
8 * Crossfire TRT is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the Free
10 * Software Foundation; either version 2 of the License, or (at your option)
11 * any later version.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 * for more details.
17 *
18 * You should have received a copy of the GNU General Public License along
19 * with Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51
20 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 *
22 * The authors can be reached via e-mail to <crossfire@schmorp.de>
23 */
24
1// 25//
2// cfperl.h perl interface 26// cfperl.h perl interface
3// 27//
4#ifndef CFPERL_H__ 28#ifndef CFPERL_H__
5#define CFPERL_H__ 29#define CFPERL_H__
6 30
31#include <cstdarg>
7#include <cstdio> 32#include <cstdio>
33#include <bitset>
8 34
9using namespace std; 35using namespace std;
10 36
11#include <EXTERN.h> 37#include <EXTERN.h>
12#include <perl.h> 38#include <perl.h>
13#include <XSUB.h> 39#include <XSUB.h>
40
41#include <EventAPI.h>
42#include <CoroAPI.h>
43
44#include "util.h"
45#include "keyword.h"
46#include "dynbuf.h"
47#include "callback.h"
48
49//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
14 50
15// optimisations/workaround for functions requiring my_perl in scope (anti-bloat) 51// optimisations/workaround for functions requiring my_perl in scope (anti-bloat)
16#undef localtime 52#undef localtime
17#undef srand48 53#undef srand48
18#undef drand48 54#undef drand48
21#undef getprotobyname 57#undef getprotobyname
22#undef gethostbyname 58#undef gethostbyname
23#undef ctime 59#undef ctime
24#undef strerror 60#undef strerror
25 61
62// same here, massive symbol spamming
63#undef do_open
64#undef do_close
65#undef ref
66#undef seed
67
26// perl bug #40256: perl does overwrite those with reentrant versions 68// perl bug #40256: perl does overwrite those with reentrant versions
27// but does not initialise their state structures. 69// but does not initialise their state structures.
28#undef random 70#undef random
29#undef crypt 71#undef crypt
30 72
73//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
74
75// some macros to simplify perl in-calls
76
77#define CHECK_ERROR \
78 if (SvTRUE (ERRSV)) \
79 LOG (llevError, "runtime error in %s: %s\n", __func__, SvPVutf8_nolen (ERRSV));
80
81#define CALL_BEGIN(args) dSP; ENTER; SAVETMPS; PUSHMARK (SP); EXTEND (SP, args)
82#define CALL_ARG_SV(sv) PUSHs (sv_2mortal (sv)) // separate because no refcount inc
83#define CALL_ARG(expr) PUSHs (sv_2mortal (to_sv (expr)))
84#define CALL_CALL(name, flags) PUTBACK; int count = call_pv (name, (flags) | G_EVAL); SPAGAIN;
85#define CALL_END CHECK_ERROR; FREETMPS; LEAVE
86
87//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
88
31void cfperl_init (); 89void cfperl_init ();
32void cfperl_main (); 90void cfperl_main ();
91void cfperl_emergency_save ();
92void cfperl_cleanup (int make_core);
93void cfperl_make_book (object *book, int level);
94
95//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
96
97// virtual server time, excluding time jumps and lag
98extern double runtime;
33 99
34enum event_klass 100enum event_klass
35{ 101{
36 KLASS_NONE, 102 KLASS_NONE,
37 KLASS_GLOBAL, 103 KLASS_GLOBAL,
104 KLASS_ATTACHABLE,
105 KLASS_CLIENT,
38 KLASS_PLAYER, 106 KLASS_PLAYER,
39 KLASS_OBJECT, 107 KLASS_OBJECT,
40 KLASS_MAP, 108 KLASS_MAP,
109 KLASS_COMMAND,
41}; 110};
42 111
43enum event_type 112enum event_type
44{ 113{
45# define def(klass,name) EVENT_ ## klass ## _ ## name, 114# define def(klass,name) EVENT_ ## klass ## _ ## name,
46# include "eventinc.h" 115# include "eventinc.h"
47# undef def 116# undef def
48 NUM_EVENT_TYPES 117 NUM_EVENT_TYPES
49}; 118};
50 119
120// in which global events or per-type events are we interested
121extern bitset<NUM_EVENT_TYPES> ev_want_event;
122extern bitset<NUM_TYPES> ev_want_type;
123
51#define ARG_AV(o) DT_AV , static_cast<AV *> (o) 124#define ARG_AV(o) DT_AV , static_cast<AV *> (o)
52#define ARG_INT(v) DT_INT , static_cast<int> (v) 125#define ARG_INT(v) DT_INT , static_cast<int> (v)
53#define ARG_INT64(v) DT_INT64 , static_cast<sint64> (v) 126#define ARG_INT64(v) DT_INT64 , static_cast<sint64> (v)
54#define ARG_DOUBLE(v) DT_DOUBLE, static_cast<double> (v) 127#define ARG_DOUBLE(v) DT_DOUBLE, static_cast<double> (v)
55#define ARG_STRING(v) DT_STRING, static_cast<const char *> (v) 128#define ARG_STRING(v) DT_STRING, static_cast<const char *> (v)
56#define ARG_DATA(s,l) DT_DATA , static_cast<const void *> (s), (l) 129#define ARG_DATA(s,l) DT_DATA , static_cast<const void *> (s), int (l)
57#define ARG_OBJECT(o) DT_OBJECT, (void *)static_cast<struct object *> (o) 130#define ARG_OBJECT(o) DT_OBJECT, (void *)(static_cast<object *> (o))
58#define ARG_MAP(o) DT_MAP , (void *)static_cast<struct mapstruct *> (o) 131#define ARG_MAP(o) DT_MAP , (void *)(static_cast<maptile *> (o))
59#define ARG_PLAYER(o) DT_PLAYER, (void *)static_cast<struct pl *> (o) 132#define ARG_PLAYER(o) DT_PLAYER, (void *)(static_cast<player *> (o))
60#define ARG_ARCH(o) DT_ARCH , (void *)static_cast<struct archetype *> (o) 133#define ARG_ARCH(o) DT_ARCH , (void *)(static_cast<archetype *> (o))
134#define ARG_CLIENT(o) DT_CLIENT, (void *)(static_cast<client *> (o))
61#define ARG_PARTY(o) DT_PARTY , (void *)static_cast<struct party *> (o) 135#define ARG_PARTY(o) DT_PARTY , (void *)(static_cast<party *> (o))
62#define ARG_REGION(o) DT_REGION, (void *)static_cast<struct region *> (o) 136#define ARG_REGION(o) DT_REGION, (void *)(static_cast<region *> (o))
63 137
64// the ", ## __VA_ARGS" is, unfortunately, a gnu-cpp extension 138// the ", ## __VA_ARGS" is, unfortunately, a gnu-cpp extension
65 139#define INVOKE(obj,event, ...) (expect_false ((obj)->should_invoke (event)) ? (obj)->invoke (event, ## __VA_ARGS__, DT_END) : 0)
66// all these return true when the normal event processing should be skipped (if any)
67#define INVOKE_(event, ...) cfperl_invoke (event, ## __VA_ARGS__, DT_END)
68
69#define INVOKE(klass, event, ...) INVOKE_(EVENT_ ## klass ## _ ## event, ## __VA_ARGS__)
70#define INVOKE_GLOBAL(event, ...) INVOKE_(EVENT_ ## GLOBAL ## _ ## event, ## __VA_ARGS__) 140#define INVOKE_GLOBAL(event, ...) INVOKE (&gbl_ev, EVENT_ ## GLOBAL ## _ ## event, ## __VA_ARGS__)
141#define INVOKE_ATTACHABLE(event, obj, ...) INVOKE (obj , EVENT_ ## ATTACHABLE ## _ ## event, ## __VA_ARGS__)
71#define INVOKE_OBJECT(event, op, ...) INVOKE_(EVENT_ ## OBJECT ## _ ## event, ARG_OBJECT (op), ## __VA_ARGS__) 142#define INVOKE_OBJECT(event, obj, ...) INVOKE (obj , EVENT_ ## OBJECT ## _ ## event, ## __VA_ARGS__)
143#define INVOKE_CLIENT(event, obj, ...) INVOKE (obj , EVENT_ ## CLIENT ## _ ## event, ## __VA_ARGS__)
72#define INVOKE_PLAYER(event, pl, ...) INVOKE_(EVENT_ ## PLAYER ## _ ## event, ARG_PLAYER (pl), ## __VA_ARGS__) 144#define INVOKE_PLAYER(event, obj, ...) INVOKE (obj , EVENT_ ## PLAYER ## _ ## event, ## __VA_ARGS__)
73#define INVOKE_MAP(event, map, ...) INVOKE_(EVENT_ ## MAP ## _ ## event, ARG_MAP (map) , ## __VA_ARGS__) 145#define INVOKE_MAP(event, obj, ...) INVOKE (obj , EVENT_ ## MAP ## _ ## event, ## __VA_ARGS__)
74 146
75//TODO should index into @result 147//TODO should index into @result
76#define RESULT(idx,type) cfperl_result_ ## type (idx) 148#define RESULT(idx,type) cfperl_result_ ## type (idx)
149#define RESULT_DOUBLE(idx) RESULT(idx, DOUBLE)
77#define RESULT_INT(idx) RESULT(idx, INT) 150#define RESULT_INT(idx) RESULT(idx, INT)
78 151
79bool cfperl_invoke (event_type event, ...); 152double cfperl_result_DOUBLE (int idx);
80int cfperl_result_INT (int idx); 153int cfperl_result_INT (int idx);
81 154
155//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
156
157INTERFACE_CLASS (attachable)
82struct attachable_base 158struct attachable
83{ 159{
84 SV *self; 160 static MGVTBL vtbl;
161
162 static unordered_vector<attachable *> mortals;
163 MTH static void check_mortals ();
164
165 enum {
166 F_DESTROYED = 0x01,
167 F_DEBUG_TRACE = 0x02,
168 };
169
170 // object is delete'd after the refcount reaches 0
171 int ACC (RW, flags);
172 mutable int ACC (RW, refcnt);
173
174 MTH void refcnt_inc () const { ++refcnt; }
175 MTH void refcnt_dec () const { --refcnt; }
176
177 MTH int refcnt_cnt () const;
178 // check wether the object has died and destroy
179 MTH void refcnt_chk () { if (expect_false (refcnt <= 0)) do_check (); }
180
181 // destroy the object unless it was already destroyed
182 // this politely asks everybody interested the reduce
183 // the refcount to 0 as soon as possible.
184 MTH void destroy ();
185
186 // return wether an object was destroyed already
187 MTH bool destroyed () const { return flags & F_DESTROYED; }
188
189 virtual void gather_callbacks (AV *&callbacks, event_type event) const;
190
191#if 0
192private:
193 static refcounted *rc_first;
194 refcounted *rc_next;
195#endif
196
197 HV *self; // CF+ perl self
85 AV *cb; // CF+ perl self and callback 198 AV *cb; // CF+ callbacks
86 shstr attach; // generic extension attachment information 199 shstr attach; // generic extension attachment information
87 200
88 void clear (); // called when free'ing objects 201 void sever_self (); // sever this object from its self, if it has one.
89 void optimise (); // possibly save some memory by destroying unneeded data 202 void optimise (); // possibly save some memory by destroying unneeded data
90 void instantiate (data_type type, void *obj);
91 203
92 void attachable_clear ()
93 {
94 self = 0;
95 cb = 0;
96 attach = 0;
97 }
98
99 attachable_base () 204 attachable ()
205 : flags (0), refcnt (0), self (0), cb (0), attach (0)
100 { 206 {
101 attachable_clear ();
102 } 207 }
103 208
104 attachable_base (const attachable_base &src) 209 attachable (const attachable &src)
105 : self (0), cb (0), attach (src.attach) 210 : flags (0), refcnt (0), self (0), cb (0), attach (src.attach)
106 { 211 {
107 } 212 }
108};
109 213
110// objects attachable from perl (or any other extension) should include or 214 virtual ~attachable ();
111// derive using the curiously recurring template pattern, to avoid 215
112// virtual method calls etc. 216 attachable &operator =(const attachable &src);
113template<class subclass> 217
114struct attachable : attachable_base 218 // used to _quickly_ device wether to shortcut the evaluation
115{ 219 bool should_invoke (event_type event)
220 {
221 return ev_want_event [event] || cb;
222 }
223
224 bool invoke (event_type event, ...);
225
116 void instantiate () 226 MTH void instantiate ();
117 { 227 void reattach ();
118 if (attach)
119 attachable_base::instantiate ((data_type) cftype<subclass>::dt, static_cast<subclass *>(this));
120 }
121};
122 228
229protected:
230 // do the real refcount checking work
231 void do_check ();
232
233 // the method that does the real destroy work
234 virtual void do_destroy ();
235};
236
237// the global object is a pseudo object that cares for the global events
238struct global : attachable
239{
240 void gather_callbacks (AV *&callbacks, event_type event) const;
241};
242
243extern struct global gbl_ev;
244
245//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
246
123struct object_freezer : dynbuf 247struct object_freezer : dynbuf_text
124{ 248{
125 AV *av; 249 AV *av;
126 250
127 object_freezer (); 251 object_freezer ();
128 ~object_freezer (); 252 ~object_freezer ();
129 253
130 void put (attachable_base *ext); 254 void put (attachable *ext);
131 255
132 template<class subclass> 256 // used only for user-defined key-value pairs
133 void put (attachable<subclass> *obj)
134 {
135 put ((attachable_base *)obj);
136 }
137
138 //TODO//temporary
139 void put (const char *k, const char *v) 257 void put (const shstr &k, const shstr &v)
140 { 258 {
141 add (k); 259 add (k);
142 260
143 if (v) 261 if (expect_true (v))
144 add (' '), add (v); 262 add (' '), add (v);
145 263
146 add ('\n'); 264 add ('\n');
147 } 265 }
148 266
149 //TODO//temporary 267 template<typename T>
150 void put (const char *k, int v)
151 {
152 add (k);
153 add (' ');
154 add (sint32 (v));
155 add ('\n');
156 }
157
158#if 1
159 void put (keyword k, const char *v) 268 void put_string (keyword k, const T &v)
160 { 269 {
161 int klen = keyword_len [k]; 270 int klen = keyword_len [k];
162 int vlen = v ? strlen (v) + 1 : 0; 271 int vlen = v ? strlen (v) + 1 : 0;
163 272
164 char *p = (char *)alloc (klen + vlen + 1); 273 char *p = (char *)alloc (klen + vlen + 1);
165 274
166 memcpy (p, keyword_str [k], klen); p += klen; 275 memcpy (p, keyword_str [k], klen); p += klen;
167 276
168 if (v) 277 if (expect_true (v))
169 { 278 {
170 *p++ = ' '; vlen--; //TODO//cf compatibility always add space 279 *p++ = ' '; vlen--;
171 memcpy (p, v, vlen); p += vlen; 280 memcpy (p, v, vlen); p += vlen;
172 } 281 }
173 282
174 *p = '\n'; 283 *p = '\n';
175 } 284 }
176#endif
177 285
178#if 0 286 void put (keyword k, const char *v = 0)
287 {
288 put_string (k, v);
289 }
290
179 void put (keyword k, const shstr &v) 291 void put (keyword k, const shstr &v)
180 { 292 {
181 int klen = keyword_len [k]; 293 put_string (k, v);
182 int vlen = v ? v.length () + 1 : 0;
183
184 char *p = (char *)alloc (klen + vlen + 1);
185
186 memcpy (p, keyword_str [k], klen); p += klen;
187
188 if (v)
189 {
190 *p++ = ' '; vlen--; //TODO//cf compatibility always add space
191 memcpy (p, v, vlen); p += vlen;
192 }
193
194 *p = '\n';
195 } 294 }
196#endif
197 295
198 void put (keyword k, double v) 296 void put (keyword k, double v)
199 { 297 {
200 char buf [128]; 298 force (MAX_KEYWORD_LEN + 2 + 32);
201 299 fadd (keyword_str [k], keyword_len [k]);
202 snprintf (buf, 128, "%.7g", v); 300 fadd (' ');
203 301 falloc (sprintf (ptr, "%.7g", v));
204 put (k, (const char *)buf); 302 fadd ('\n');
205 } 303 }
206 304
207 void put_(keyword k, sint64 v) 305 void put_(keyword k, sint64 v)
208 { 306 {
307 force (MAX_KEYWORD_LEN + 2 + sint64_digits);
209 add (keyword_str [k], keyword_len [k]); 308 fadd (keyword_str [k], keyword_len [k]);
210 add (' '); 309 fadd (' ');
211 add (v); 310 add (v);
212 add ('\n'); 311 fadd ('\n');
213 } 312 }
214 313
215 void put_(keyword k, sint32 v) 314 void put_(keyword k, sint32 v)
216 { 315 {
316 force (MAX_KEYWORD_LEN + 2 + sint32_digits);
217 add (keyword_str [k], keyword_len [k]); 317 fadd (keyword_str [k], keyword_len [k]);
218 add (' '); 318 fadd (' ');
219 add (v); 319 add (v);
220 add ('\n'); 320 fadd ('\n');
221 }
222
223 void put (keyword kbeg, keyword kend, const char *v)
224 {
225 add (keyword_str [kbeg], keyword_len [kbeg]); add ('\n');
226
227 if (v)
228 {
229 add (v);
230 add ('\n');
231 }
232
233 add (keyword_str [kend], keyword_len [kend]); add ('\n');
234 } 321 }
235 322
236 void put (keyword k, float v) { put (k, (double)v); } 323 void put (keyword k, float v) { put (k, (double)v); }
237 void put (keyword k, signed char v) { put_(k, (sint32)v); } 324 void put (keyword k, signed char v) { put_(k, (sint32)v); }
238 void put (keyword k, unsigned char v) { put_(k, (sint32)v); } 325 void put (keyword k, unsigned char v) { put_(k, (sint32)v); }
243 void put (keyword k, signed long v) { put_(k, (sint64)v); } 330 void put (keyword k, signed long v) { put_(k, (sint64)v); }
244 void put (keyword k, unsigned long v) { put_(k, (sint64)v); } 331 void put (keyword k, unsigned long v) { put_(k, (sint64)v); }
245 void put (keyword k, signed long long v) { put_(k, (sint64)v); } 332 void put (keyword k, signed long long v) { put_(k, (sint64)v); }
246 void put (keyword k, unsigned long long v) { put_(k, (sint64)v); } 333 void put (keyword k, unsigned long long v) { put_(k, (sint64)v); }
247 334
335 void put (keyword kbeg, keyword kend, const shstr &v)
336 {
337 force (MAX_KEYWORD_LEN + 1);
338 fadd (keyword_str [kbeg], keyword_len [kbeg]); fadd ('\n');
339
340 if (expect_true (v))
341 {
342 add (v);
343 add ('\n');
344 }
345
346 force (MAX_KEYWORD_LEN + 1);
347 fadd (keyword_str [kend], keyword_len [kend]); fadd ('\n');
348 }
349
248 template<typename T> 350 template<typename T>
249 void put (keyword k, T *v) 351 void put (keyword k, const T *v)
250 { 352 {
251 put (k, v ? (const char *)v->name : 0); 353 put (k, v ? &v->name : (const char *)0);
252 } 354 }
253 355
356 template<typename T>
357 void put (keyword k, const refptr<T> &v)
358 {
359 put (k, (T *)v);
360 }
361
254 bool save (const char *filename); 362 bool save (const char *path);
363 char *as_string (); // like strdup
255 364
256 operator bool () { return !!av; } 365 operator bool () { return !!av; }
257}; 366};
258 367
259// compatibility support, should be removed when no longer needed
260int fprintf (object_freezer &freezer, const char *format, ...);
261int fputs (const char *s, object_freezer &freezer);
262
263struct object_thawer 368struct object_thawer
264{ 369{
370 char *line; // current beginning of line
265 SV *text; // text part 371 SV *text; // text part
266 AV *av; // perl part 372 AV *av; // perl part
267 char *line; // current beginning of line 373 int linenum;
268 char *last_value; 374 keyword kw;
375 char *kw_str; // the keyword parsed, as string
376 char *value; // the value, or 0 if no value
377 char *value_nn; // the value, or the empty string if no value
378 const char *name;
269 379
270 operator bool () { return !!text; } 380 operator bool () { return !!text; }
271 381
272 object_thawer (const char *filename = 0); 382 object_thawer (const char *path = 0);
383 object_thawer (const char *data, AV *perlav);
273 ~object_thawer (); 384 ~object_thawer ();
274 385
275 void get (data_type type, void *obj, attachable_base *ext, int oid);
276
277 template<class subclass>
278 void get (attachable<subclass> *obj, int oid) 386 void get (attachable *obj, int oid);
279 {
280 if (av)
281 get ((data_type) cftype<subclass>::dt, (subclass *)obj, obj, oid);
282 }
283 387
284 keyword get_kv (); // also parse value for later use 388 // parse next line
389 void next ();
390 // skip the current key-value (usually fetch next line, for
391 // multiline-fields, skips till the corresponding end-kw
392 void skip ();
285 393
286 const char *get_str () { return last_value; } // may be 0 394 char *get_str () { return value; } // may be 0
287
288 void get (shstr &sh) const;
289 void get_ornull (shstr &sh) const { sh = last_value; }
290 void get_ml (keyword kend, shstr &sh); 395 void get_ml (keyword kend, shstr &sh);
291 396
397 void get_ornull (shstr &sh) const { sh = value; }
398 void get (shstr &sh) const { sh = value; } // might want to check for non-null here
399
400 bool get_bool () const { return *value_nn == '1'; }
292 sint32 get_sint32 () const; 401 sint32 get_sint32 () const;
293 sint64 get_sint64 () const; 402 sint64 get_sint64 () const { return strtoll (value_nn, 0, 10); }
294 double get_double () const; 403 double get_double () const { return strtod (value_nn, 0); }
295 404
296 void get (float &v) { v = get_double (); } 405 void get (float &v) { v = get_double (); }
297 void get (double &v) { v = get_double (); } 406 void get (double &v) { v = get_double (); }
298 407
408 void get (bool &i) { i = get_bool (); }
299 void get (sint8 &i) { i = get_sint32 (); } 409 void get (sint8 &i) { i = get_sint32 (); }
300 void get (uint8 &i) { i = get_sint32 (); } 410 void get (uint8 &i) { i = get_sint32 (); }
301 void get (sint16 &i) { i = get_sint32 (); } 411 void get (sint16 &i) { i = get_sint32 (); }
302 void get (uint16 &i) { i = get_sint32 (); } 412 void get (uint16 &i) { i = get_sint32 (); }
303 void get (sint32 &i) { i = get_sint32 (); } 413 void get (sint32 &i) { i = get_sint32 (); }
304 414
305 void get (uint32 &i) { i = get_sint64 (); } 415 void get (uint32 &i) { i = get_sint64 (); }
306 void get (sint64 &i) { i = get_sint64 (); } 416 void get (sint64 &i) { i = get_sint64 (); }
307};
308 417
418 bool parse_error (const char *type = 0, const char *name = 0, bool skip = true);
419};
420
421//TODO: remove
309char *fgets (char *s, int n, object_thawer &thawer); 422char *fgets (char *s, int n, object_thawer &thawer);
310 423
424//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
425
426struct coroapi {
427 static struct CoroAPI *GCoroAPI;
428
429 static int nready () { return CORO_NREADY; }
430 static int cede () { return CORO_CEDE ; }
431
432 static double (*time)();
433 static double next_cede;
434 static int cede_counter;
435
436 static void do_cede_every ();
437 static void do_cede_to_tick ();
438 static void do_cede_to_tick_every ();
439
440 static void cede_every (int count)
441 {
442 if (expect_false (++cede_counter >= count))
443 do_cede_every ();
444 }
445
446 static void cede_to_tick ()
447 {
448 if (expect_false (time () >= next_cede))
449 do_cede_to_tick ();
450 }
451
452 static void cede_to_tick_every (int count)
453 {
454 if (expect_false (++cede_counter >= count))
455 cede_to_tick ();
456 }
457
458 static void wait_for_tick ();
459 static void wait_for_tick_begin ();
460};
461
462struct watcher_base
463{
464 static struct EventAPI *GEventAPI;
465};
466
467template<class base>
468struct watcher : watcher_base
469{
470 base *pe;
471
472 void start (bool repeat = false) { GEventAPI->start ((pe_watcher *)pe, repeat); }
473 void stop (bool cancel_events = false) { GEventAPI->stop ((pe_watcher *)pe, cancel_events); }
474 void now () { GEventAPI->now ((pe_watcher *)pe); }
475 void suspend () { GEventAPI->suspend ((pe_watcher *)pe); }
476 void resume () { GEventAPI->resume ((pe_watcher *)pe); }
477
478 void prio (int new_prio) { ((pe_watcher *)pe)->prio = new_prio; }
479
480 ~watcher ()
481 {
482 cancel ();
483 }
484
485private:
486 void cancel () { GEventAPI->cancel ((pe_watcher *)pe); } // private
487};
488
489struct iw : watcher<pe_idle>, callback<void (iw &)>
490{
491 template<class O, class M>
492 iw (O object, M method)
493 : callback<void (iw &)> (object, method)
494 {
495 alloc ();
496 }
497
498private:
499 void alloc ();
500};
501
502struct iow : watcher<pe_io>, callback<void (iow &, int)>
503{
504 template<class O, class M>
505 iow (O object, M method)
506 : callback<void (iow &, int)> (object, method)
507 {
508 alloc ();
509 }
510
511 void fd (int fd);
512 int poll ();
513 void poll (int events);
514
515private:
516 void alloc ();
517};
518
311#endif 519#endif
312 520

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