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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 1.83 by root, Fri Jul 13 15:54:40 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), (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 // set a custom key to the given value, or delete it if value = 0
111// derive using the curiously recurring template pattern, to avoid 215 void set_key (const char *key, const char *value = 0);
112// virtual method calls etc. 216
113template<class subclass> 217 attachable &operator =(const attachable &src);
114struct attachable : attachable_base 218
115{ 219 // used to _quickly_ device wether to shortcut the evaluation
220 bool should_invoke (event_type event)
221 {
222 return ev_want_event [event] || cb;
223 }
224
225 bool invoke (event_type event, ...);
226
116 void instantiate () 227 MTH void instantiate ();
117 { 228 void reattach ();
118 if (attach)
119 attachable_base::instantiate ((data_type) cftype<subclass>::dt, static_cast<subclass *>(this));
120 }
121};
122 229
230protected:
231 // do the real refcount checking work
232 void do_check ();
233
234 // the method that does the real destroy work
235 virtual void do_destroy ();
236
237 // destructor is protected, should not be called by anybody
238 virtual ~attachable ();
239};
240
241// the global object is a pseudo object that cares for the global events
242struct global : attachable
243{
244 void gather_callbacks (AV *&callbacks, event_type event) const;
245};
246
247extern struct global gbl_ev;
248
249//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
250
123struct object_freezer : dynbuf 251struct object_freezer : dynbuf_text
124{ 252{
125 AV *av; 253 AV *av;
126 254
127 object_freezer (); 255 object_freezer ();
128 ~object_freezer (); 256 ~object_freezer ();
129 257
130 void put (attachable_base *ext); 258 void put (attachable *ext);
131 259
132 template<class subclass> 260 // 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) 261 void put (const shstr &k, const shstr &v)
140 { 262 {
141 add (k); 263 add (k);
142 264
143 if (v) 265 if (expect_true (v))
144 add (' '), add (v); 266 add (' '), add (v);
145 267
146 add ('\n'); 268 add ('\n');
147 } 269 }
148 270
149 //TODO//temporary 271 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) 272 void put_kw_string (keyword k, const T &v)
160 { 273 {
161 int klen = keyword_len [k]; 274 int klen = keyword_len [k];
162 int vlen = v ? strlen (v) + 1 : 0; 275 int vlen = v ? strlen (v) + 1 : 0;
163 276
164 char *p = (char *)alloc (klen + vlen + 1); 277 char *p = (char *)alloc (klen + vlen + 1);
165 278
166 memcpy (p, keyword_str [k], klen); p += klen; 279 memcpy (p, keyword_str [k], klen); p += klen;
167 280
168 if (v) 281 if (expect_true (v))
169 { 282 {
170 *p++ = ' '; vlen--; //TODO//cf compatibility always add space 283 *p++ = ' '; vlen--;
171 memcpy (p, v, vlen); p += vlen; 284 memcpy (p, v, vlen); p += vlen;
172 } 285 }
173 286
174 *p = '\n'; 287 *p = '\n';
175 } 288 }
176#endif
177 289
178#if 0 290 void put (keyword k, const char *v = 0)
291 {
292 put_kw_string (k, v);
293 }
294
179 void put (keyword k, const shstr &v) 295 void put (keyword k, const shstr &v)
180 { 296 {
181 int klen = keyword_len [k]; 297 put_kw_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 } 298 }
196#endif
197 299
198 void put (keyword k, double v) 300 void put (keyword k, double v)
199 { 301 {
200 char buf [128]; 302 force (MAX_KEYWORD_LEN + 2 + 32);
201 303 fadd (keyword_str [k], keyword_len [k]);
202 snprintf (buf, 128, "%.7g", v); 304 fadd (' ');
203 305 falloc (sprintf (ptr, "%.7g", v));
204 put (k, (const char *)buf); 306 fadd ('\n');
205 } 307 }
206 308
207 void put_(keyword k, sint64 v) 309 void put_(keyword k, sint64 v)
208 { 310 {
311 force (MAX_KEYWORD_LEN + 2 + sint64_digits);
209 add (keyword_str [k], keyword_len [k]); 312 fadd (keyword_str [k], keyword_len [k]);
210 add (' '); 313 fadd (' ');
211 add (v); 314 add (v);
212 add ('\n'); 315 fadd ('\n');
213 } 316 }
214 317
215 void put_(keyword k, sint32 v) 318 void put_(keyword k, sint32 v)
216 { 319 {
320 force (MAX_KEYWORD_LEN + 2 + sint32_digits);
217 add (keyword_str [k], keyword_len [k]); 321 fadd (keyword_str [k], keyword_len [k]);
218 add (' '); 322 fadd (' ');
219 add (v); 323 add (v);
220 add ('\n'); 324 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 } 325 }
235 326
236 void put (keyword k, float v) { put (k, (double)v); } 327 void put (keyword k, float v) { put (k, (double)v); }
237 void put (keyword k, signed char v) { put_(k, (sint32)v); } 328 void put (keyword k, signed char v) { put_(k, (sint32)v); }
238 void put (keyword k, unsigned char v) { put_(k, (sint32)v); } 329 void put (keyword k, unsigned char v) { put_(k, (sint32)v); }
243 void put (keyword k, signed long v) { put_(k, (sint64)v); } 334 void put (keyword k, signed long v) { put_(k, (sint64)v); }
244 void put (keyword k, unsigned long v) { put_(k, (sint64)v); } 335 void put (keyword k, unsigned long v) { put_(k, (sint64)v); }
245 void put (keyword k, signed long long v) { put_(k, (sint64)v); } 336 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); } 337 void put (keyword k, unsigned long long v) { put_(k, (sint64)v); }
247 338
339 void put (keyword kbeg, keyword kend, const shstr &v)
340 {
341 force (MAX_KEYWORD_LEN + 1);
342 fadd (keyword_str [kbeg], keyword_len [kbeg]); fadd ('\n');
343
344 if (expect_true (v))
345 {
346 add (v);
347 add ('\n');
348 }
349
350 force (MAX_KEYWORD_LEN + 1);
351 fadd (keyword_str [kend], keyword_len [kend]); fadd ('\n');
352 }
353
354 void put (keyword k, archetype *v);
355 void put (keyword k, treasurelist *v);
356 void put (keyword k, faceinfo *v);
357
248 template<typename T> 358 template<typename T>
249 void put (keyword k, T *v) 359 void put (keyword k, const refptr<T> &v)
250 { 360 {
251 put (k, v ? (const char *)v->name : 0); 361 put (k, (T *)v);
252 } 362 }
253 363
254 bool save (const char *filename); 364 bool save (const char *path);
365 char *as_string (); // like strdup
255 366
256 operator bool () { return !!av; } 367 operator bool () { return !!av; }
257}; 368};
258 369
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 370struct object_thawer
264{ 371{
372 char *line; // current beginning of line
265 SV *text; // text part 373 SV *text; // text part
266 AV *av; // perl part 374 AV *av; // perl part
267 char *line; // current beginning of line 375 int linenum;
268 char *last_value; 376 keyword kw;
377 char *kw_str; // the keyword parsed, as string
378 char *value; // the value, or 0 if no value
379 char *value_nn; // the value, or the empty string if no value
380 const char *name;
269 381
270 operator bool () { return !!text; } 382 operator bool () { return !!text; }
271 383
272 object_thawer (const char *filename = 0); 384 object_thawer (const char *path = 0);
385 object_thawer (const char *data, AV *perlav);
273 ~object_thawer (); 386 ~object_thawer ();
274 387
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) 388 void get (attachable *obj, int oid);
279 {
280 if (av)
281 get ((data_type) cftype<subclass>::dt, (subclass *)obj, obj, oid);
282 }
283 389
284 keyword get_kv (); // also parse value for later use 390 // parse next line
391 void next ();
392 // skip the current key-value (usually fetch next line, for
393 // multiline-fields, skips till the corresponding end-kw
394 void skip ();
285 395
286 const char *get_str () { return last_value; } // may be 0 396 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); 397 void get_ml (keyword kend, shstr &sh);
291 398
399 void get_ornull (shstr &sh) const { sh = value; }
400 void get (shstr &sh) const { sh = value; } // might want to check for non-null here
401
402 bool get_bool () const { return *value_nn == '1'; }
292 sint32 get_sint32 () const; 403 sint32 get_sint32 () const;
293 sint64 get_sint64 () const; 404 sint64 get_sint64 () const { return strtoll (value_nn, 0, 10); }
294 double get_double () const; 405 double get_double () const { return strtod (value_nn, 0); }
295 406
296 void get (float &v) { v = get_double (); } 407 void get (float &v) { v = get_double (); }
297 void get (double &v) { v = get_double (); } 408 void get (double &v) { v = get_double (); }
298 409
410 void get (bool &i) { i = get_bool (); }
299 void get (sint8 &i) { i = get_sint32 (); } 411 void get (sint8 &i) { i = get_sint32 (); }
300 void get (uint8 &i) { i = get_sint32 (); } 412 void get (uint8 &i) { i = get_sint32 (); }
301 void get (sint16 &i) { i = get_sint32 (); } 413 void get (sint16 &i) { i = get_sint32 (); }
302 void get (uint16 &i) { i = get_sint32 (); } 414 void get (uint16 &i) { i = get_sint32 (); }
303 void get (sint32 &i) { i = get_sint32 (); } 415 void get (sint32 &i) { i = get_sint32 (); }
304 416
305 void get (uint32 &i) { i = get_sint64 (); } 417 void get (uint32 &i) { i = get_sint64 (); }
306 void get (sint64 &i) { i = get_sint64 (); } 418 void get (sint64 &i) { i = get_sint64 (); }
307};
308 419
420 bool parse_error (const char *type = 0, const char *name = 0, bool skip = true);
421};
422
423//TODO: remove
309char *fgets (char *s, int n, object_thawer &thawer); 424char *fgets (char *s, int n, object_thawer &thawer);
310 425
426//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
427
428struct coroapi {
429 static struct CoroAPI *GCoroAPI;
430
431 static int nready () { return CORO_NREADY; }
432 static int cede () { return CORO_CEDE ; }
433
434 static tstamp next_cede;
435 static int cede_counter;
436
437 static void do_cede_every ();
438 static void do_cede_to_tick ();
439 static void do_cede_to_tick_every ();
440
441 static void cede_every (int count)
442 {
443 if (expect_false (++cede_counter >= count))
444 do_cede_every ();
445 }
446
447 static bool cede_to_tick ()
448 {
449 if (expect_true (now () < next_cede))
450 return false;
451
452 do_cede_to_tick ();
453 return true;
454 }
455
456 static bool cede_to_tick_every (int count)
457 {
458 if (expect_true (++cede_counter < count))
459 return false;
460
461 return cede_to_tick ();
462 }
463
464 static void wait_for_tick ();
465 static void wait_for_tick_begin ();
466};
467
468struct watcher_base
469{
470 static struct EventAPI *GEventAPI;
471};
472
473template<class base>
474struct watcher : watcher_base
475{
476 base *pe;
477
478 void start (bool repeat = false) { GEventAPI->start ((pe_watcher *)pe, repeat); }
479 void stop (bool cancel_events = false) { GEventAPI->stop ((pe_watcher *)pe, cancel_events); }
480 void now () { GEventAPI->now ((pe_watcher *)pe); }
481 void suspend () { GEventAPI->suspend ((pe_watcher *)pe); }
482 void resume () { GEventAPI->resume ((pe_watcher *)pe); }
483
484 void prio (int new_prio) { ((pe_watcher *)pe)->prio = new_prio; }
485
486 ~watcher ()
487 {
488 cancel ();
489 }
490
491private:
492 void cancel () { GEventAPI->cancel ((pe_watcher *)pe); } // private
493};
494
495struct iw : watcher<pe_idle>, callback<void (iw &)>
496{
497 template<class O, class M>
498 iw (O object, M method)
499 : callback<void (iw &)> (object, method)
500 {
501 alloc ();
502 }
503
504private:
505 void alloc ();
506};
507
508struct iow : watcher<pe_io>, callback<void (iow &, int)>
509{
510 template<class O, class M>
511 iow (O object, M method)
512 : callback<void (iow &, int)> (object, method)
513 {
514 alloc ();
515 }
516
517 void fd (int fd);
518 int poll ();
519 void poll (int events);
520
521private:
522 void alloc ();
523};
524
311#endif 525#endif
312 526

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