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Comparing deliantra/server/include/cfperl.h (file contents):
Revision 1.33 by root, Mon Dec 11 22:56:57 2006 UTC vs.
Revision 1.86 by root, Mon Aug 6 10:54:12 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);
94int cfperl_can_merge (object *ob1, object *ob2);
95
96//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
97
98extern tstamp runtime; // virtual server time, excluding time jumps and lag
99extern tstamp NOW; // real time of current server tick
33 100
34enum event_klass 101enum event_klass
35{ 102{
36 KLASS_NONE, 103 KLASS_NONE,
37 KLASS_GLOBAL, 104 KLASS_GLOBAL,
105 KLASS_ATTACHABLE,
106 KLASS_CLIENT,
38 KLASS_PLAYER, 107 KLASS_PLAYER,
39 KLASS_OBJECT, 108 KLASS_OBJECT,
40 KLASS_MAP, 109 KLASS_MAP,
41 KLASS_COMMAND, 110 KLASS_COMMAND,
42}; 111};
47# include "eventinc.h" 116# include "eventinc.h"
48# undef def 117# undef def
49 NUM_EVENT_TYPES 118 NUM_EVENT_TYPES
50}; 119};
51 120
121// in which global events or per-type events are we interested
122extern bitset<NUM_EVENT_TYPES> ev_want_event;
123extern bitset<NUM_TYPES> ev_want_type;
124
52#define ARG_AV(o) DT_AV , static_cast<AV *> (o) 125#define ARG_AV(o) DT_AV , static_cast<AV *> (o)
53#define ARG_INT(v) DT_INT , static_cast<int> (v) 126#define ARG_INT(v) DT_INT , static_cast<int> (v)
54#define ARG_INT64(v) DT_INT64 , static_cast<sint64> (v) 127#define ARG_INT64(v) DT_INT64 , static_cast<sint64> (v)
55#define ARG_DOUBLE(v) DT_DOUBLE, static_cast<double> (v) 128#define ARG_DOUBLE(v) DT_DOUBLE, static_cast<double> (v)
56#define ARG_STRING(v) DT_STRING, static_cast<const char *> (v) 129#define ARG_STRING(v) DT_STRING, static_cast<const char *> (v)
57#define ARG_DATA(s,l) DT_DATA , static_cast<const void *> (s), int (l) 130#define ARG_DATA(s,l) DT_DATA , static_cast<const void *> (s), int (l)
58#define ARG_OBJECT(o) DT_OBJECT, (void *)static_cast<object *> (o) 131#define ARG_OBJECT(o) DT_OBJECT, (void *)(static_cast<object *> (o))
59#define ARG_MAP(o) DT_MAP , (void *)static_cast<maptile *> (o) 132#define ARG_MAP(o) DT_MAP , (void *)(static_cast<maptile *> (o))
60#define ARG_PLAYER(o) DT_PLAYER, (void *)static_cast<player *> (o) 133#define ARG_PLAYER(o) DT_PLAYER, (void *)(static_cast<player *> (o))
61#define ARG_ARCH(o) DT_ARCH , (void *)static_cast<archetype *> (o) 134#define ARG_ARCH(o) DT_ARCH , (void *)(static_cast<archetype *> (o))
135#define ARG_CLIENT(o) DT_CLIENT, (void *)(static_cast<client *> (o))
62#define ARG_PARTY(o) DT_PARTY , (void *)static_cast<party *> (o) 136#define ARG_PARTY(o) DT_PARTY , (void *)(static_cast<party *> (o))
63#define ARG_REGION(o) DT_REGION, (void *)static_cast<region *> (o) 137#define ARG_REGION(o) DT_REGION, (void *)(static_cast<region *> (o))
64 138
65// the ", ## __VA_ARGS" is, unfortunately, a gnu-cpp extension 139// the ", ## __VA_ARGS" is, unfortunately, a gnu-cpp extension
66 140#define INVOKE(obj,event, ...) (expect_false ((obj)->should_invoke (event)) ? (obj)->invoke (event, ## __VA_ARGS__, DT_END) : 0)
67// all these return true when the normal event processing should be skipped (if any)
68#define INVOKE_(event, ...) cfperl_invoke (event, ## __VA_ARGS__, DT_END)
69
70#define INVOKE(klass, event, ...) INVOKE_(EVENT_ ## klass ## _ ## event, ## __VA_ARGS__)
71#define INVOKE_GLOBAL(event, ...) INVOKE_(EVENT_ ## GLOBAL ## _ ## event, ## __VA_ARGS__) 141#define INVOKE_GLOBAL(event, ...) INVOKE (&gbl_ev, EVENT_ ## GLOBAL ## _ ## event, ## __VA_ARGS__)
142#define INVOKE_ATTACHABLE(event, obj, ...) INVOKE (obj , EVENT_ ## ATTACHABLE ## _ ## event, ## __VA_ARGS__)
72#define INVOKE_OBJECT(event, op, ...) INVOKE_(EVENT_ ## OBJECT ## _ ## event, ARG_OBJECT (op), ## __VA_ARGS__) 143#define INVOKE_OBJECT(event, obj, ...) INVOKE (obj , EVENT_ ## OBJECT ## _ ## event, ## __VA_ARGS__)
144#define INVOKE_CLIENT(event, obj, ...) INVOKE (obj , EVENT_ ## CLIENT ## _ ## event, ## __VA_ARGS__)
73#define INVOKE_PLAYER(event, pl, ...) INVOKE_(EVENT_ ## PLAYER ## _ ## event, ARG_PLAYER (pl), ## __VA_ARGS__) 145#define INVOKE_PLAYER(event, obj, ...) INVOKE (obj , EVENT_ ## PLAYER ## _ ## event, ## __VA_ARGS__)
74#define INVOKE_MAP(event, map, ...) INVOKE_(EVENT_ ## MAP ## _ ## event, ARG_MAP (map) , ## __VA_ARGS__) 146#define INVOKE_MAP(event, obj, ...) INVOKE (obj , EVENT_ ## MAP ## _ ## event, ## __VA_ARGS__)
75 147
76//TODO should index into @result 148//TODO should index into @result
77#define RESULT(idx,type) cfperl_result_ ## type (idx) 149#define RESULT(idx,type) cfperl_result_ ## type (idx)
78#define RESULT_DOUBLE(idx) RESULT(idx, DOUBLE) 150#define RESULT_DOUBLE(idx) RESULT(idx, DOUBLE)
79#define RESULT_INT(idx) RESULT(idx, INT) 151#define RESULT_INT(idx) RESULT(idx, INT)
80 152
81bool cfperl_invoke (event_type event, ...);
82int cfperl_result_DOUBLE (int idx); 153double cfperl_result_DOUBLE (int idx);
83int cfperl_result_INT (int idx); 154int cfperl_result_INT (int idx);
84 155
156//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
157
158INTERFACE_CLASS (attachable)
85struct attachable_base 159struct attachable : refcnt_base
86{ 160{
87 SV *self; 161 static MGVTBL vtbl;
162
163 static unordered_vector<attachable *> mortals;
164 MTH static void check_mortals ();
165
166 enum {
167 F_DESTROYED = 0x01,
168 F_DEBUG_TRACE = 0x02,
169 };
170 int ACC (RW, flags);
171
172 // object is delete'd after the refcount reaches 0
173 MTH int refcnt_cnt () const;
174 // check wether the object has died and destroy
175 MTH void refcnt_chk () { if (expect_false (refcnt <= 0)) do_check (); }
176
177 // destroy the object unless it was already destroyed
178 // this politely asks everybody interested the reduce
179 // the refcount to 0 as soon as possible.
180 MTH void destroy ();
181
182 // return wether an object was destroyed already
183 MTH bool destroyed () const { return flags & F_DESTROYED; }
184
185 virtual void gather_callbacks (AV *&callbacks, event_type event) const;
186
187#if 0
188private:
189 static refcounted *rc_first;
190 refcounted *rc_next;
191#endif
192
193 HV *self; // CF+ perl self
88 AV *cb; // CF+ perl self and callback 194 AV *cb; // CF+ callbacks
89 shstr attach; // generic extension attachment information 195 shstr attach; // generic extension attachment information
90 196
91 void clear (); // called when free'ing objects 197 void sever_self (); // sever this object from its self, if it has one.
92 void optimise (); // possibly save some memory by destroying unneeded data 198 void optimise (); // possibly save some memory by destroying unneeded data
93 void instantiate (data_type type, void *obj);
94 199
95 void attachable_clear ()
96 {
97 self = 0;
98 cb = 0;
99 attach = 0;
100 }
101
102 attachable_base () 200 attachable ()
201 : flags (0), self (0), cb (0), attach (0)
103 { 202 {
104 attachable_clear ();
105 } 203 }
106 204
107 ~attachable_base ()
108 {
109 clear ();
110 }
111
112 attachable_base (const attachable_base &src) 205 attachable (const attachable &src)
113 : self (0), cb (0), attach (src.attach) 206 : flags (0), self (0), cb (0), attach (src.attach)
114 { 207 {
115 } 208 }
116 209
210 // set a custom key to the given value, or delete it if value = 0
211 void set_key (const char *key, const char *value = 0);
212
117 attachable_base &operator = (const attachable_base &src) 213 attachable &operator =(const attachable &src);
118 {
119 clear ();
120 attach = src.attach;
121 return *this;
122 }
123};
124 214
125// objects attachable from perl (or any other extension) should include or 215 // used to _quickly_ device wether to shortcut the evaluation
126// derive using the curiously recurring template pattern, to avoid 216 bool should_invoke (event_type event)
127// virtual method calls etc. 217 {
128template<class subclass> 218 return ev_want_event [event] || cb;
129struct attachable : attachable_base 219 }
130{ 220
221 bool invoke (event_type event, ...);
222
131 void instantiate () 223 MTH void instantiate ();
132 { 224 void reattach ();
133 if (attach)
134 attachable_base::instantiate ((data_type) cftype<subclass>::dt, static_cast<subclass *>(this));
135 }
136};
137 225
226protected:
227 // do the real refcount checking work
228 void do_check ();
229
230 // the method that does the real destroy work
231 virtual void do_destroy ();
232
233 // destructor is protected, should not be called by anybody
234 virtual ~attachable ();
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
138struct object_freezer : dynbuf 247struct object_freezer : dynbuf_text
139{ 248{
140 AV *av; 249 AV *av;
141 250
142 object_freezer (); 251 object_freezer ();
143 ~object_freezer (); 252 ~object_freezer ();
144 253
145 void put (attachable_base *ext); 254 void put (attachable *ext);
146
147 template<class subclass>
148 void put (attachable<subclass> *obj)
149 {
150 put ((attachable_base *)obj);
151 }
152 255
153 // used only for user-defined key-value pairs 256 // used only for user-defined key-value pairs
154 void put (const shstr &k, const shstr &v) 257 void put (const shstr &k, const shstr &v)
155 { 258 {
156 add (k); 259 add (k);
157 260
158 if (v) 261 if (expect_true (v))
159 add (' '), add (v); 262 add (' '), add (v);
160 263
161 add ('\n'); 264 add ('\n');
162 } 265 }
163 266
164 //TODO//temporary, used only for saving body locations
165 void put (const char *k, int v)
166 {
167 add (k);
168 add (' ');
169 add (sint32 (v));
170 add ('\n');
171 }
172
173 template<typename T> 267 template<typename T>
174 void put_string (keyword k, const T &v) 268 void put_kw_string (keyword k, const T &v)
175 { 269 {
176 int klen = keyword_len [k]; 270 int klen = keyword_len [k];
177 int vlen = v ? strlen (v) + 1 : 0; 271 int vlen = v ? strlen (v) + 1 : 0;
178 272
179 char *p = (char *)alloc (klen + vlen + 1); 273 char *p = (char *)alloc (klen + vlen + 1);
180 274
181 memcpy (p, keyword_str [k], klen); p += klen; 275 memcpy (p, keyword_str [k], klen); p += klen;
182 276
183 if (v) 277 if (expect_true (v))
184 { 278 {
185 *p++ = ' '; vlen--; 279 *p++ = ' '; vlen--;
186 memcpy (p, v, vlen); p += vlen; 280 memcpy (p, v, vlen); p += vlen;
187 } 281 }
188 282
189 *p = '\n'; 283 *p = '\n';
190 } 284 }
191 285
192 void put (keyword k, const char *v) 286 void put (keyword k, const char *v = 0)
193 { 287 {
194 put_string (k, v); 288 put_kw_string (k, v);
195 } 289 }
196 290
197 void put (keyword k, const shstr &v) 291 void put (keyword k, const shstr &v)
198 { 292 {
199 put_string (k, v); 293 put_kw_string (k, v);
200 } 294 }
201 295
202 void put (keyword k, double v) 296 void put (keyword k, double v)
203 { 297 {
204 char buf [128]; 298 force (MAX_KEYWORD_LEN + 2 + 32);
205 299 fadd (keyword_str [k], keyword_len [k]);
206 snprintf (buf, 128, "%.7g", v); 300 fadd (' ');
207 301 falloc (sprintf (ptr, "%.7g", v));
208 put (k, (const char *)buf); 302 fadd ('\n');
209 } 303 }
210 304
211 void put_(keyword k, sint64 v) 305 void put_(keyword k, sint64 v)
212 { 306 {
307 force (MAX_KEYWORD_LEN + 2 + sint64_digits);
213 add (keyword_str [k], keyword_len [k]); 308 fadd (keyword_str [k], keyword_len [k]);
214 add (' '); 309 fadd (' ');
215 add (v); 310 add (v);
216 add ('\n'); 311 fadd ('\n');
217 } 312 }
218 313
219 void put_(keyword k, sint32 v) 314 void put_(keyword k, sint32 v)
220 { 315 {
316 force (MAX_KEYWORD_LEN + 2 + sint32_digits);
221 add (keyword_str [k], keyword_len [k]); 317 fadd (keyword_str [k], keyword_len [k]);
222 add (' '); 318 fadd (' ');
223 add (v); 319 add (v);
224 add ('\n'); 320 fadd ('\n');
225 }
226
227 void put (keyword kbeg, keyword kend, const shstr &v)
228 {
229 add (keyword_str [kbeg], keyword_len [kbeg]); add ('\n');
230
231 if (v)
232 {
233 add (v);
234 add ('\n');
235 }
236
237 add (keyword_str [kend], keyword_len [kend]); add ('\n');
238 } 321 }
239 322
240 void put (keyword k, float v) { put (k, (double)v); } 323 void put (keyword k, float v) { put (k, (double)v); }
241 void put (keyword k, signed char v) { put_(k, (sint32)v); } 324 void put (keyword k, signed char v) { put_(k, (sint32)v); }
242 void put (keyword k, unsigned char v) { put_(k, (sint32)v); } 325 void put (keyword k, unsigned char v) { put_(k, (sint32)v); }
247 void put (keyword k, signed long v) { put_(k, (sint64)v); } 330 void put (keyword k, signed long v) { put_(k, (sint64)v); }
248 void put (keyword k, unsigned long v) { put_(k, (sint64)v); } 331 void put (keyword k, unsigned long v) { put_(k, (sint64)v); }
249 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); }
250 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); }
251 334
252 template<typename T> 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
350 void put (keyword k, archetype *v);
351 void put (keyword k, treasurelist *v);
253 void put (keyword k, const T *v) 352 void put (keyword k, faceinfo *v);
254 {
255 if (v)
256 put (k, v->name);
257 else
258 put (k, (const char *)0);
259 }
260 353
261 template<typename T> 354 template<typename T>
262 void put (keyword k, const refptr<T> &v) 355 void put (keyword k, const refptr<T> &v)
263 { 356 {
264 put (k, (T *)v); 357 put (k, (T *)v);
265 } 358 }
266 359
267 bool save (const char *filename); 360 bool save (const char *path);
268 char *as_string (); // like strdup 361 char *as_string (); // like strdup
269 362
270 operator bool () { return !!av; } 363 operator bool () { return !!av; }
271}; 364};
272 365
273// compatibility support, should be removed when no longer needed
274int fprintf (object_freezer &freezer, const char *format, ...);
275int fputs (const char *s, object_freezer &freezer);
276
277struct object_thawer 366struct object_thawer
278{ 367{
368 char *line; // current beginning of line
279 SV *text; // text part 369 SV *text; // text part
280 AV *av; // perl part 370 AV *av; // perl part
281 char *line; // current beginning of line 371 int linenum;
282 char *last_value; 372 keyword kw;
373 char *kw_str; // the keyword parsed, as string
374 char *value; // the value, or 0 if no value
375 char *value_nn; // the value, or the empty string if no value
376 const char *name;
283 377
284 operator bool () { return !!text; } 378 operator bool () { return !!text; }
285 379
286 object_thawer (const char *filename = 0); 380 object_thawer (const char *path = 0);
287 object_thawer (const char *data, AV *perlav); 381 object_thawer (const char *data, AV *perlav);
288 ~object_thawer (); 382 ~object_thawer ();
289 383
290 void get (data_type type, void *obj, attachable_base *ext, int oid);
291
292 template<class subclass>
293 void get (attachable<subclass> *obj, int oid) 384 void get (attachable *obj, int oid);
294 {
295 if (av)
296 get ((data_type) cftype<subclass>::dt, (subclass *)obj, obj, oid);
297 }
298 385
299 keyword get_kv (); // also parse value for later use 386 // parse next line
387 void next ();
388 // skip the current key-value (usually fetch next line, for
389 // multiline-fields, skips till the corresponding end-kw
390 void skip ();
300 391
301 const char *get_str () { return last_value; } // may be 0 392 char *get_str () { return value; } // may be 0
302
303 void get (shstr &sh) const;
304 void get_ornull (shstr &sh) const { sh = last_value; }
305 void get_ml (keyword kend, shstr &sh); 393 void get_ml (keyword kend, shstr &sh);
306 394
395 void get_ornull (shstr &sh) const { sh = value; }
396 void get (shstr &sh) const { sh = value; } // might want to check for non-null here
397
398 bool get_bool () const { return *value_nn == '1'; }
307 sint32 get_sint32 () const; 399 sint32 get_sint32 () const;
308 sint64 get_sint64 () const; 400 sint64 get_sint64 () const { return strtoll (value_nn, 0, 10); }
309 double get_double () const; 401 double get_double () const { return strtod (value_nn, 0); }
310 402
311 void get (float &v) { v = get_double (); } 403 void get (float &v) { v = get_double (); }
312 void get (double &v) { v = get_double (); } 404 void get (double &v) { v = get_double (); }
313 405
406 void get (bool &i) { i = get_bool (); }
314 void get (sint8 &i) { i = get_sint32 (); } 407 void get (sint8 &i) { i = get_sint32 (); }
315 void get (uint8 &i) { i = get_sint32 (); } 408 void get (uint8 &i) { i = get_sint32 (); }
316 void get (sint16 &i) { i = get_sint32 (); } 409 void get (sint16 &i) { i = get_sint32 (); }
317 void get (uint16 &i) { i = get_sint32 (); } 410 void get (uint16 &i) { i = get_sint32 (); }
318 void get (sint32 &i) { i = get_sint32 (); } 411 void get (sint32 &i) { i = get_sint32 (); }
319 412
320 void get (uint32 &i) { i = get_sint64 (); } 413 void get (uint32 &i) { i = get_sint64 (); }
321 void get (sint64 &i) { i = get_sint64 (); } 414 void get (sint64 &i) { i = get_sint64 (); }
322};
323 415
416 void parse_warn (const char *msg);
417 bool parse_error (const char *type = 0, const char *name = 0, bool skip = true);
418};
419
420//TODO: remove
324char *fgets (char *s, int n, object_thawer &thawer); 421char *fgets (char *s, int n, object_thawer &thawer);
325 422
423//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
424
425struct coroapi {
426 static struct CoroAPI *GCoroAPI;
427
428 static int nready () { return CORO_NREADY; }
429 static int cede () { return CORO_CEDE ; }
430
431 static tstamp next_cede;
432 static int cede_counter;
433
434 static void do_cede_every ();
435 static void do_cede_to_tick ();
436 static void do_cede_to_tick_every ();
437
438 static void cede_every (int count)
439 {
440 if (expect_false (++cede_counter >= count))
441 do_cede_every ();
442 }
443
444 static bool cede_to_tick ()
445 {
446 if (expect_true (now () < next_cede))
447 return false;
448
449 do_cede_to_tick ();
450 return true;
451 }
452
453 static bool cede_to_tick_every (int count)
454 {
455 if (expect_true (++cede_counter < count))
456 return false;
457
458 return cede_to_tick ();
459 }
460
461 static void wait_for_tick ();
462 static void wait_for_tick_begin ();
463};
464
465struct watcher_base
466{
467 static struct EventAPI *GEventAPI;
468};
469
470template<class base>
471struct watcher : watcher_base
472{
473 base *pe;
474
475 void start (bool repeat = false) { GEventAPI->start ((pe_watcher *)pe, repeat); }
476 void stop (bool cancel_events = false) { GEventAPI->stop ((pe_watcher *)pe, cancel_events); }
477 void now () { GEventAPI->now ((pe_watcher *)pe); }
478 void suspend () { GEventAPI->suspend ((pe_watcher *)pe); }
479 void resume () { GEventAPI->resume ((pe_watcher *)pe); }
480
481 void prio (int new_prio) { ((pe_watcher *)pe)->prio = new_prio; }
482
483 ~watcher ()
484 {
485 cancel ();
486 }
487
488private:
489 void cancel () { GEventAPI->cancel ((pe_watcher *)pe); } // private
490};
491
492struct iw : watcher<pe_idle>, callback<void (iw &)>
493{
494 template<class O, class M>
495 iw (O object, M method)
496 : callback<void (iw &)> (object, method)
497 {
498 alloc ();
499 }
500
501private:
502 void alloc ();
503};
504
505struct iow : watcher<pe_io>, callback<void (iow &, int)>
506{
507 template<class O, class M>
508 iow (O object, M method)
509 : callback<void (iow &, int)> (object, method)
510 {
511 alloc ();
512 }
513
514 void fd (int fd);
515 int poll ();
516 void poll (int events);
517
518private:
519 void alloc ();
520};
521
326#endif 522#endif
327 523

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