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Comparing deliantra/server/include/cfperl.h (file contents):
Revision 1.29 by root, Thu Sep 21 00:05:25 2006 UTC vs.
Revision 1.82 by root, Wed Jul 11 16:55:18 2007 UTC

1/*
2 * This file is part of Crossfire TRT, the Roguelike Realtime MORPG.
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
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation, either version 3 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 *
21 * The authors can be reached via e-mail to <crossfire@schmorp.de>
22 */
23
1// 24//
2// cfperl.h perl interface 25// cfperl.h perl interface
3// 26//
4#ifndef CFPERL_H__ 27#ifndef CFPERL_H__
5#define CFPERL_H__ 28#define CFPERL_H__
6 29
30#include <cstdarg>
7#include <cstdio> 31#include <cstdio>
32#include <bitset>
8 33
9using namespace std; 34using namespace std;
10 35
11#include <EXTERN.h> 36#include <EXTERN.h>
12#include <perl.h> 37#include <perl.h>
13#include <XSUB.h> 38#include <XSUB.h>
39
40#include <EventAPI.h>
41#include <CoroAPI.h>
42
43#include "util.h"
44#include "keyword.h"
45#include "dynbuf.h"
46#include "callback.h"
47
48//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
14 49
15// optimisations/workaround for functions requiring my_perl in scope (anti-bloat) 50// optimisations/workaround for functions requiring my_perl in scope (anti-bloat)
16#undef localtime 51#undef localtime
17#undef srand48 52#undef srand48
18#undef drand48 53#undef drand48
… …
21#undef getprotobyname 56#undef getprotobyname
22#undef gethostbyname 57#undef gethostbyname
23#undef ctime 58#undef ctime
24#undef strerror 59#undef strerror
25 60
61// same here, massive symbol spamming
62#undef do_open
63#undef do_close
64#undef ref
65#undef seed
66
26// perl bug #40256: perl does overwrite those with reentrant versions 67// perl bug #40256: perl does overwrite those with reentrant versions
27// but does not initialise their state structures. 68// but does not initialise their state structures.
28#undef random 69#undef random
29#undef crypt 70#undef crypt
30 71
72//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
73
74// some macros to simplify perl in-calls
75
76#define CHECK_ERROR \
77 if (SvTRUE (ERRSV)) \
78 LOG (llevError, "runtime error in %s: %s\n", __func__, SvPVutf8_nolen (ERRSV));
79
80#define CALL_BEGIN(args) dSP; ENTER; SAVETMPS; PUSHMARK (SP); EXTEND (SP, args)
81#define CALL_ARG_SV(sv) PUSHs (sv_2mortal (sv)) // separate because no refcount inc
82#define CALL_ARG(expr) PUSHs (sv_2mortal (to_sv (expr)))
83#define CALL_CALL(name, flags) PUTBACK; int count = call_pv (name, (flags) | G_EVAL); SPAGAIN;
84#define CALL_END CHECK_ERROR; FREETMPS; LEAVE
85
86//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
87
31void cfperl_init (); 88void cfperl_init ();
32void cfperl_main (); 89void cfperl_main ();
90void cfperl_emergency_save ();
91void cfperl_cleanup (int make_core);
92void cfperl_make_book (object *book, int level);
93void cfperl_send_msg (client *ns, int color, const char *type, const char *msg);
94
95//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
96
97extern tstamp runtime; // virtual server time, excluding time jumps and lag
98extern tstamp NOW; // real time of current server tick
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), int (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<object *> (o) 130#define ARG_OBJECT(o) DT_OBJECT, (void *)(static_cast<object *> (o))
58#define ARG_MAP(o) DT_MAP , (void *)static_cast<maptile *> (o) 131#define ARG_MAP(o) DT_MAP , (void *)(static_cast<maptile *> (o))
59#define ARG_PLAYER(o) DT_PLAYER, (void *)static_cast<player *> (o) 132#define ARG_PLAYER(o) DT_PLAYER, (void *)(static_cast<player *> (o))
60#define ARG_ARCH(o) DT_ARCH , (void *)static_cast<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<party *> (o) 135#define ARG_PARTY(o) DT_PARTY , (void *)(static_cast<party *> (o))
62#define ARG_REGION(o) DT_REGION, (void *)static_cast<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#define RESULT_MAP(idx) RESULT(idx, MAP)
79 151
80bool cfperl_invoke (event_type event, ...); 152double cfperl_result_DOUBLE (int idx);
81int cfperl_result_INT (int idx); 153int cfperl_result_INT (int idx);
82int cfperl_result_MAP (int idx);
83 154
155//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
156
157INTERFACE_CLASS (attachable)
84struct attachable_base 158struct attachable
85{ 159{
86 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
87 AV *cb; // CF+ perl self and callback 198 AV *cb; // CF+ callbacks
88 shstr attach; // generic extension attachment information 199 shstr attach; // generic extension attachment information
89 200
90 void clear (); // called when free'ing objects 201 void sever_self (); // sever this object from its self, if it has one.
91 void optimise (); // possibly save some memory by destroying unneeded data 202 void optimise (); // possibly save some memory by destroying unneeded data
92 void instantiate (data_type type, void *obj);
93 203
94 void attachable_clear ()
95 {
96 self = 0;
97 cb = 0;
98 attach = 0;
99 }
100
101 attachable_base () 204 attachable ()
205 : flags (0), refcnt (0), self (0), cb (0), attach (0)
102 { 206 {
103 attachable_clear ();
104 } 207 }
105 208
106 ~attachable_base ()
107 {
108 clear ();
109 }
110
111 attachable_base (const attachable_base &src) 209 attachable (const attachable &src)
112 : self (0), cb (0), attach (src.attach) 210 : flags (0), refcnt (0), self (0), cb (0), attach (src.attach)
113 { 211 {
114 } 212 }
115 213
214 virtual ~attachable ();
215
216 // set a custom key to the given value, or delete it if value = 0
217 void set_key (const char *key, const char *value = 0);
218
116 attachable_base &operator = (const attachable_base &src) 219 attachable &operator =(const attachable &src);
117 {
118 clear ();
119 attach = src.attach;
120 return *this;
121 }
122};
123 220
124// objects attachable from perl (or any other extension) should include or 221 // used to _quickly_ device wether to shortcut the evaluation
125// derive using the curiously recurring template pattern, to avoid 222 bool should_invoke (event_type event)
126// virtual method calls etc. 223 {
127template<class subclass> 224 return ev_want_event [event] || cb;
128struct attachable : attachable_base 225 }
129{ 226
227 bool invoke (event_type event, ...);
228
130 void instantiate () 229 MTH void instantiate ();
131 { 230 void reattach ();
132 if (attach)
133 attachable_base::instantiate ((data_type) cftype<subclass>::dt, static_cast<subclass *>(this));
134 }
135};
136 231
232protected:
233 // do the real refcount checking work
234 void do_check ();
235
236 // the method that does the real destroy work
237 virtual void do_destroy ();
238};
239
240// the global object is a pseudo object that cares for the global events
241struct global : attachable
242{
243 void gather_callbacks (AV *&callbacks, event_type event) const;
244};
245
246extern struct global gbl_ev;
247
248//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
249
137struct object_freezer : dynbuf 250struct object_freezer : dynbuf_text
138{ 251{
139 AV *av; 252 AV *av;
140 253
141 object_freezer (); 254 object_freezer ();
142 ~object_freezer (); 255 ~object_freezer ();
143 256
144 void put (attachable_base *ext); 257 void put (attachable *ext);
145
146 template<class subclass>
147 void put (attachable<subclass> *obj)
148 {
149 put ((attachable_base *)obj);
150 }
151 258
152 // used only for user-defined key-value pairs 259 // used only for user-defined key-value pairs
153 void put (const shstr &k, const shstr &v) 260 void put (const shstr &k, const shstr &v)
154 { 261 {
155 add (k); 262 add (k);
156 263
157 if (v) 264 if (expect_true (v))
158 add (' '), add (v); 265 add (' '), add (v);
159 266
160 add ('\n'); 267 add ('\n');
161 } 268 }
162 269
163 //TODO//temporary, used only for saving body locations
164 void put (const char *k, int v)
165 {
166 add (k);
167 add (' ');
168 add (sint32 (v));
169 add ('\n');
170 }
171
172 template<typename T> 270 template<typename T>
173 void put_string (keyword k, const T &v) 271 void put_kw_string (keyword k, const T &v)
174 { 272 {
175 int klen = keyword_len [k]; 273 int klen = keyword_len [k];
176 int vlen = v ? strlen (v) + 1 : 0; 274 int vlen = v ? strlen (v) + 1 : 0;
177 275
178 char *p = (char *)alloc (klen + vlen + 1); 276 char *p = (char *)alloc (klen + vlen + 1);
179 277
180 memcpy (p, keyword_str [k], klen); p += klen; 278 memcpy (p, keyword_str [k], klen); p += klen;
181 279
182 if (v) 280 if (expect_true (v))
183 { 281 {
184 *p++ = ' '; vlen--; 282 *p++ = ' '; vlen--;
185 memcpy (p, v, vlen); p += vlen; 283 memcpy (p, v, vlen); p += vlen;
186 } 284 }
187 285
188 *p = '\n'; 286 *p = '\n';
189 } 287 }
190 288
191 void put (keyword k, const char *v) 289 void put (keyword k, const char *v = 0)
192 { 290 {
193 put_string (k, v); 291 put_kw_string (k, v);
194 } 292 }
195 293
196 void put (keyword k, const shstr &v) 294 void put (keyword k, const shstr &v)
197 { 295 {
198 put_string (k, v); 296 put_kw_string (k, v);
199 } 297 }
200 298
201 void put (keyword k, double v) 299 void put (keyword k, double v)
202 { 300 {
203 char buf [128]; 301 force (MAX_KEYWORD_LEN + 2 + 32);
204 302 fadd (keyword_str [k], keyword_len [k]);
205 snprintf (buf, 128, "%.7g", v); 303 fadd (' ');
206 304 falloc (sprintf (ptr, "%.7g", v));
207 put (k, (const char *)buf); 305 fadd ('\n');
208 } 306 }
209 307
210 void put_(keyword k, sint64 v) 308 void put_(keyword k, sint64 v)
211 { 309 {
310 force (MAX_KEYWORD_LEN + 2 + sint64_digits);
212 add (keyword_str [k], keyword_len [k]); 311 fadd (keyword_str [k], keyword_len [k]);
213 add (' '); 312 fadd (' ');
214 add (v); 313 add (v);
215 add ('\n'); 314 fadd ('\n');
216 } 315 }
217 316
218 void put_(keyword k, sint32 v) 317 void put_(keyword k, sint32 v)
219 { 318 {
319 force (MAX_KEYWORD_LEN + 2 + sint32_digits);
220 add (keyword_str [k], keyword_len [k]); 320 fadd (keyword_str [k], keyword_len [k]);
221 add (' '); 321 fadd (' ');
222 add (v); 322 add (v);
223 add ('\n'); 323 fadd ('\n');
224 }
225
226 void put (keyword kbeg, keyword kend, const shstr &v)
227 {
228 add (keyword_str [kbeg], keyword_len [kbeg]); add ('\n');
229
230 if (v)
231 {
232 add (v);
233 add ('\n');
234 }
235
236 add (keyword_str [kend], keyword_len [kend]); add ('\n');
237 } 324 }
238 325
239 void put (keyword k, float v) { put (k, (double)v); } 326 void put (keyword k, float v) { put (k, (double)v); }
240 void put (keyword k, signed char v) { put_(k, (sint32)v); } 327 void put (keyword k, signed char v) { put_(k, (sint32)v); }
241 void put (keyword k, unsigned char v) { put_(k, (sint32)v); } 328 void put (keyword k, unsigned char v) { put_(k, (sint32)v); }
… …
246 void put (keyword k, signed long v) { put_(k, (sint64)v); } 333 void put (keyword k, signed long v) { put_(k, (sint64)v); }
247 void put (keyword k, unsigned long v) { put_(k, (sint64)v); } 334 void put (keyword k, unsigned long v) { put_(k, (sint64)v); }
248 void put (keyword k, signed long long v) { put_(k, (sint64)v); } 335 void put (keyword k, signed long long v) { put_(k, (sint64)v); }
249 void put (keyword k, unsigned long long v) { put_(k, (sint64)v); } 336 void put (keyword k, unsigned long long v) { put_(k, (sint64)v); }
250 337
338 void put (keyword kbeg, keyword kend, const shstr &v)
339 {
340 force (MAX_KEYWORD_LEN + 1);
341 fadd (keyword_str [kbeg], keyword_len [kbeg]); fadd ('\n');
342
343 if (expect_true (v))
344 {
345 add (v);
346 add ('\n');
347 }
348
349 force (MAX_KEYWORD_LEN + 1);
350 fadd (keyword_str [kend], keyword_len [kend]); fadd ('\n');
351 }
352
353 void put (keyword k, archetype *v);
354 void put (keyword k, treasurelist *v);
355 void put (keyword k, faceinfo *v);
356
251 template<typename T> 357 template<typename T>
252 void put (keyword k, T *v) 358 void put (keyword k, const refptr<T> &v)
253 { 359 {
254 if (v) 360 put (k, (T *)v);
255 put (k, v->name);
256 else
257 put (k, (const char *)0);
258 } 361 }
259 362
260 bool save (const char *filename); 363 bool save (const char *path);
364 char *as_string (); // like strdup
261 365
262 operator bool () { return !!av; } 366 operator bool () { return !!av; }
263}; 367};
264 368
265// compatibility support, should be removed when no longer needed
266int fprintf (object_freezer &freezer, const char *format, ...);
267int fputs (const char *s, object_freezer &freezer);
268
269struct object_thawer 369struct object_thawer
270{ 370{
371 char *line; // current beginning of line
271 SV *text; // text part 372 SV *text; // text part
272 AV *av; // perl part 373 AV *av; // perl part
273 char *line; // current beginning of line 374 int linenum;
274 char *last_value; 375 keyword kw;
376 char *kw_str; // the keyword parsed, as string
377 char *value; // the value, or 0 if no value
378 char *value_nn; // the value, or the empty string if no value
379 const char *name;
275 380
276 operator bool () { return !!text; } 381 operator bool () { return !!text; }
277 382
278 object_thawer (const char *filename = 0); 383 object_thawer (const char *path = 0);
384 object_thawer (const char *data, AV *perlav);
279 ~object_thawer (); 385 ~object_thawer ();
280 386
281 void get (data_type type, void *obj, attachable_base *ext, int oid);
282
283 template<class subclass>
284 void get (attachable<subclass> *obj, int oid) 387 void get (attachable *obj, int oid);
285 {
286 if (av)
287 get ((data_type) cftype<subclass>::dt, (subclass *)obj, obj, oid);
288 }
289 388
290 keyword get_kv (); // also parse value for later use 389 // parse next line
390 void next ();
391 // skip the current key-value (usually fetch next line, for
392 // multiline-fields, skips till the corresponding end-kw
393 void skip ();
291 394
292 const char *get_str () { return last_value; } // may be 0 395 char *get_str () { return value; } // may be 0
293
294 void get (shstr &sh) const;
295 void get_ornull (shstr &sh) const { sh = last_value; }
296 void get_ml (keyword kend, shstr &sh); 396 void get_ml (keyword kend, shstr &sh);
297 397
398 void get_ornull (shstr &sh) const { sh = value; }
399 void get (shstr &sh) const { sh = value; } // might want to check for non-null here
400
401 bool get_bool () const { return *value_nn == '1'; }
298 sint32 get_sint32 () const; 402 sint32 get_sint32 () const;
299 sint64 get_sint64 () const; 403 sint64 get_sint64 () const { return strtoll (value_nn, 0, 10); }
300 double get_double () const; 404 double get_double () const { return strtod (value_nn, 0); }
301 405
302 void get (float &v) { v = get_double (); } 406 void get (float &v) { v = get_double (); }
303 void get (double &v) { v = get_double (); } 407 void get (double &v) { v = get_double (); }
304 408
409 void get (bool &i) { i = get_bool (); }
305 void get (sint8 &i) { i = get_sint32 (); } 410 void get (sint8 &i) { i = get_sint32 (); }
306 void get (uint8 &i) { i = get_sint32 (); } 411 void get (uint8 &i) { i = get_sint32 (); }
307 void get (sint16 &i) { i = get_sint32 (); } 412 void get (sint16 &i) { i = get_sint32 (); }
308 void get (uint16 &i) { i = get_sint32 (); } 413 void get (uint16 &i) { i = get_sint32 (); }
309 void get (sint32 &i) { i = get_sint32 (); } 414 void get (sint32 &i) { i = get_sint32 (); }
310 415
311 void get (uint32 &i) { i = get_sint64 (); } 416 void get (uint32 &i) { i = get_sint64 (); }
312 void get (sint64 &i) { i = get_sint64 (); } 417 void get (sint64 &i) { i = get_sint64 (); }
313};
314 418
419 bool parse_error (const char *type = 0, const char *name = 0, bool skip = true);
420};
421
422//TODO: remove
315char *fgets (char *s, int n, object_thawer &thawer); 423char *fgets (char *s, int n, object_thawer &thawer);
316 424
425//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
426
427struct coroapi {
428 static struct CoroAPI *GCoroAPI;
429
430 static int nready () { return CORO_NREADY; }
431 static int cede () { return CORO_CEDE ; }
432
433 static tstamp 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 bool cede_to_tick ()
447 {
448 if (expect_true (now () < next_cede))
449 return false;
450
451 do_cede_to_tick ();
452 return true;
453 }
454
455 static bool cede_to_tick_every (int count)
456 {
457 if (expect_true (++cede_counter < count))
458 return false;
459
460 return cede_to_tick ();
461 }
462
463 static void wait_for_tick ();
464 static void wait_for_tick_begin ();
465};
466
467struct watcher_base
468{
469 static struct EventAPI *GEventAPI;
470};
471
472template<class base>
473struct watcher : watcher_base
474{
475 base *pe;
476
477 void start (bool repeat = false) { GEventAPI->start ((pe_watcher *)pe, repeat); }
478 void stop (bool cancel_events = false) { GEventAPI->stop ((pe_watcher *)pe, cancel_events); }
479 void now () { GEventAPI->now ((pe_watcher *)pe); }
480 void suspend () { GEventAPI->suspend ((pe_watcher *)pe); }
481 void resume () { GEventAPI->resume ((pe_watcher *)pe); }
482
483 void prio (int new_prio) { ((pe_watcher *)pe)->prio = new_prio; }
484
485 ~watcher ()
486 {
487 cancel ();
488 }
489
490private:
491 void cancel () { GEventAPI->cancel ((pe_watcher *)pe); } // private
492};
493
494struct iw : watcher<pe_idle>, callback<void (iw &)>
495{
496 template<class O, class M>
497 iw (O object, M method)
498 : callback<void (iw &)> (object, method)
499 {
500 alloc ();
501 }
502
503private:
504 void alloc ();
505};
506
507struct iow : watcher<pe_io>, callback<void (iow &, int)>
508{
509 template<class O, class M>
510 iow (O object, M method)
511 : callback<void (iow &, int)> (object, method)
512 {
513 alloc ();
514 }
515
516 void fd (int fd);
517 int poll ();
518 void poll (int events);
519
520private:
521 void alloc ();
522};
523
317#endif 524#endif
318 525

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