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Comparing deliantra/server/include/cfperl.h (file contents):
Revision 1.6 by root, Sat Aug 26 08:44:06 2006 UTC vs.
Revision 1.107 by root, Mon Oct 12 04:02:17 2009 UTC

1/*
2 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
3 *
4 * Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5 * Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team
6 * Copyright (©) 1992,2007 Frank Tore Johansen
7 *
8 * Deliantra 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 <support@deliantra.net>
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
7struct pl; 30#include <cstdarg>
8struct object; 31#include <cstdio>
9struct mapstruct; 32#include <bitset>
10 33
11// could have used templates, but a more traditional C api 34using namespace std;
12// uses more explicit typing which is ok for this purpose.
13enum data_type
14{
15 DT_END, // no further arguments
16 DT_INT,
17 DT_INT64,
18 DT_DOUBLE,
19 DT_STRING, // 0-terminated string
20 DT_DATA, // string + length
21 DT_OBJECT,
22 DT_MAP,
23 DT_PLAYER,
24 DT_ARCH,
25 DT_PARTY,
26 DT_REGION,
27 35
28 // following are only for cfapi-compatibility 36#include <EXTERN.h>
29 DT_INT_PTR, 37#include <perl.h>
30 DT_INT64_PTR, 38#include <XSUB.h>
31 DT_DOUBLE_PTR, 39
32}; 40#include <EVAPI.h>
41#include <CoroAPI.h>
42
43#include "util.h"
44#include "keyword.h"
45#include "dynbuf.h"
46#include "callback.h"
47
48//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
49
50// optimisations/workaround for functions requiring my_perl in scope (anti-bloat)
51#undef localtime
52#undef srand48
53#undef drand48
54#undef srandom
55#undef opendir
56#undef readdir
57#undef closedir
58#undef getprotobyname
59#undef gethostbyname
60#undef ctime
61#undef strerror
62#undef _
63
64// same here, massive symbol spamming
65#undef do_open
66#undef do_close
67#undef ref
68#undef seed
69
70// perl bug #40256: perl does overwrite those with reentrant versions
71// but does not initialise their state structures.
72#undef random
73#undef crypt
74
75//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
76
77#define _(msg) (msg)
78#define N_(msg) (msg)
79
80//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
81
82// some macros to simplify perl in-calls
83
84#define CHECK_ERROR \
85 if (SvTRUE (ERRSV)) \
86 LOG (llevError, "runtime error in %s: %s", __func__, SvPVutf8_nolen (ERRSV));
87
88inline int call_pvsv (const char *ob, I32 flags) { return call_pv (ob, flags); }
89inline int call_pvsv (SV *ob, I32 flags) { return call_sv (ob, flags); }
90
91#define CALL_BEGIN(args) dSP; ENTER; SAVETMPS; PUSHMARK (SP); EXTEND (SP, args)
92#define CALL_ARG_SV(sv) PUSHs (sv_2mortal (sv)) // separate because no refcount inc
93#define CALL_ARG(expr) PUSHs (sv_2mortal (to_sv (expr)))
94#define CALL_CALL(name, flags) PUTBACK; int count = call_pvsv (name, (flags) | G_EVAL); SPAGAIN;
95#define CALL_END PUTBACK; CHECK_ERROR; FREETMPS; LEAVE
96
97//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
98
99void cfperl_init ();
100void cfperl_main ();
101void cfperl_tick ();
102void cfperl_emergency_save ();
103void cfperl_cleanup (int make_core);
104void cfperl_make_book (object *book, int level);
105void cfperl_send_msg (client *ns, int color, const char *type, const char *msg);
106int cfperl_can_merge (object *ob1, object *ob2);
107void cfperl_mapscript_activate (object *ob, int state, object *activator, object *originator = 0);
108
109bool is_match_expr (const char *expr);
110/* applies the match expression and returns true if it matches */
111bool match (const char *expr, object *ob, object *self = 0, object *source = 0, object *originator = 0);
112
113//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
114
115#if IVSIZE >= 8
116 typedef IV val64;
117 typedef IV uval64;
118# define newSVval64 newSViv
119# define SvVAL64 SvIV
120# define newSVuval64 newSVuv
121# define SvUVAL64 SvUV
122#else
123 typedef double val64;
124 typedef double uval64;
125# define newSVval64 newSVnv
126# define SvVAL64 SvNV
127# define newSVuval64 newSVnv
128# define SvUVAL64 SvNV
129#endif
130
131extern tstamp runtime; // virtual server time, excluding time jumps and lag
132extern tstamp NOW; // real time of current server tick
33 133
34enum event_klass 134enum event_klass
35{ 135{
136 KLASS_NONE,
36 KLASS_GLOBAL, 137 KLASS_GLOBAL,
138 KLASS_ATTACHABLE,
139 KLASS_CLIENT,
37 KLASS_PLAYER, 140 KLASS_PLAYER,
38 KLASS_OBJECT, 141 KLASS_OBJECT,
39 KLASS_MAP, 142 KLASS_MAP,
143 KLASS_COMMAND,
40}; 144};
41 145
42enum event_type 146enum event_type
43{ 147{
44# define def(klass,name) EV_ ## klass ## _ ## name, 148# define def(klass,name) EVENT_ ## klass ## _ ## name,
45# include "eventinc.h" 149# include "eventinc.h"
46# undef def 150# undef def
47 NUM_EVENT_TYPES 151 NUM_EVENT_TYPES
48}; 152};
49 153
154// in which global events or per-type events are we interested
155extern bitset<NUM_EVENT_TYPES> ev_want_event;
156extern bitset<NUM_TYPES> ev_want_type;
157
158#define ARG_AV(o) DT_AV , static_cast<AV *> (o)
50#define ARG_INT(v) DT_INT , static_cast<int> (v) 159#define ARG_INT(v) DT_INT , static_cast<int> (v)
51#define ARG_INT64(v) DT_INT64 , static_cast<sint64> (v) 160#define ARG_INT64(v) DT_INT64 , static_cast<sint64> (v)
52#define ARG_DOUBLE(v) DT_DOUBLE, static_cast<double> (v) 161#define ARG_DOUBLE(v) DT_DOUBLE, static_cast<double> (v)
53#define ARG_STRING(v) DT_STRING, static_cast<const char *> (v) 162#define ARG_STRING(v) DT_STRING, static_cast<const char *> (v)
54#define ARG_DATA(s,l) DT_DATA , static_cast<const void *> (s), (l) 163#define ARG_DATA(s,l) DT_DATA , static_cast<const void *> (s), int (l)
55#define ARG_OBJECT(o) DT_OBJECT, (void *)static_cast<struct object *> (o) 164#define ARG_OBJECT(o) DT_OBJECT, (void *)(static_cast<object *> (o))
56#define ARG_MAP(o) DT_MAP , (void *)static_cast<struct mapstruct *> (o) 165#define ARG_MAP(o) DT_MAP , (void *)(static_cast<maptile *> (o))
57#define ARG_PLAYER(o) DT_PLAYER, (void *)static_cast<struct pl *> (o) 166#define ARG_PLAYER(o) DT_PLAYER, (void *)(static_cast<player *> (o))
58#define ARG_ARCH(o) DT_ARCH , (void *)static_cast<struct archetype *> (o) 167#define ARG_ARCH(o) DT_ARCH , (void *)(static_cast<archetype *> (o))
168#define ARG_CLIENT(o) DT_CLIENT, (void *)(static_cast<client *> (o))
59#define ARG_PARTY(o) DT_PARTY , (void *)static_cast<struct party *> (o) 169#define ARG_PARTY(o) DT_PARTY , (void *)(static_cast<party *> (o))
60#define ARG_REGION(o) DT_REGION, (void *)static_cast<struct region *> (o) 170#define ARG_REGION(o) DT_REGION, (void *)(static_cast<region *> (o))
61 171
62// the ", ## __VA_ARGS" is, unfortunately, a gnu-cpp extension 172// the ", ## __VA_ARGS" is, unfortunately, a gnu-cpp extension
173#define INVOKE(obj,event, ...) (expect_false ((obj)->should_invoke (event)) ? (obj)->invoke (event, ## __VA_ARGS__, DT_END) : 0)
174#define INVOKE_GLOBAL(event, ...) INVOKE (&gbl_ev, EVENT_ ## GLOBAL ## _ ## event, ## __VA_ARGS__)
175#define INVOKE_ATTACHABLE(event, obj, ...) INVOKE (obj , EVENT_ ## ATTACHABLE ## _ ## event, ## __VA_ARGS__)
176#define INVOKE_OBJECT(event, obj, ...) INVOKE (obj , EVENT_ ## OBJECT ## _ ## event, ## __VA_ARGS__)
177#define INVOKE_CLIENT(event, obj, ...) INVOKE (obj , EVENT_ ## CLIENT ## _ ## event, ## __VA_ARGS__)
178#define INVOKE_PLAYER(event, obj, ...) INVOKE (obj , EVENT_ ## PLAYER ## _ ## event, ## __VA_ARGS__)
179#define INVOKE_MAP(event, obj, ...) INVOKE (obj , EVENT_ ## MAP ## _ ## event, ## __VA_ARGS__)
63 180
64// all these return true when the normal event processing should be skipped (if any) 181//TODO should index into @result
65#define INVOKE(klass, event, ...) cfperl_invoke (EV_ ## klass ## _ ## event, ## __VA_ARGS__, DT_END) 182#define RESULT(idx,type) cfperl_result_ ## type (idx)
183#define RESULT_DOUBLE(idx) RESULT(idx, DOUBLE)
184#define RESULT_INT(idx) RESULT(idx, INT)
66 185
67#define INVOKE_GLOBAL(event, ...) INVOKE (GLOBAL, event, ## __VA_ARGS__) 186double cfperl_result_DOUBLE (int idx);
68#define INVOKE_OBJECT(event, op, ...) INVOKE (OBJECT, event, ARG_OBJECT (op), ## __VA_ARGS__) 187int cfperl_result_INT (int idx);
69#define INVOKE_PLAYER(event, pl, ...) INVOKE (PLAYER, event, ARG_PLAYER (pl), ## __VA_ARGS__)
70#define INVOKE_MAP(event, map, ...) INVOKE (MAP , event, ARG_MAP (map) , ## __VA_ARGS__)
71 188
72struct extendable_base 189//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
73{
74 void *self, *cb; // CF+ perl self and callback
75 const char *attach; // generic extension attachment information
76 190
77 void clear (); // called when free'ing objects 191INTERFACE_CLASS (attachable)
78 void optimise (); // possibly save some memory by destroying unneeded data 192struct attachable : refcnt_base
79 void reattach (data_type type, void *self); // called after swapin
80 void instantiate (data_type type, void *self); // called on first instantiation
81 void clone (data_type type, void *self, void *dest);
82};
83
84// objects extendable from perl (or any other extension) should include or
85// derive using the curiously recurring template pattern, to avoid
86// virtual method calls etc.
87template<class subclass>
88struct extendable : extendable_base
89{ 193{
90 void clear () 194 static MGVTBL vtbl;
91 { 195
92 if (self || cb) 196 enum {
93 extendable_base::clear (); 197 F_DESTROYED = 0x01,
198 F_DEBUG_TRACE = 0x02,
94 } 199 };
95 void instantiate () 200 uint8 ACC (RW, flags);
96 {
97 if (attach)
98 extendable_base::instantiate (
99 static_cast<subclass *>(this)->get_dt (),
100 static_cast<subclass *>(this)
101 );
102 }
103 void reattach ()
104 {
105 if (attach)
106 extendable_base::reattach (
107 static_cast<subclass *>(this)->get_dt (),
108 static_cast<subclass *>(this)
109 );
110 }
111 void clone (subclass *destination)
112 {
113 if (self || cb)
114 extendable_base::clone (
115 static_cast<subclass *>(this)->get_dt (),
116 static_cast<subclass *>(this),
117 destination
118 );
119 }
120};
121 201
122bool cfperl_invoke (event_type event, ...); 202 static unordered_vector<attachable *> mortals;
123void cfperl_free_ob (struct object *op); 203 MTH static void check_mortals ();
124 204
125void cfperl_init (); 205 // object is delete'd after the refcount reaches 0
126void cfperl_main (); 206 MTH int refcnt_cnt () const;
207 // check wether the object has died and destroy
208 MTH void refcnt_chk () { if (expect_false (refcnt <= 0)) do_check (); }
127 209
210 // destroy the object unless it was already destroyed
211 // this politely asks everybody interested the reduce
212 // the refcount to 0 as soon as possible.
213 MTH void destroy ();
214
215 // return wether an object was destroyed already
216 MTH bool destroyed () const { return flags & F_DESTROYED; }
217
218 virtual void gather_callbacks (AV *&callbacks, event_type event) const;
219
220#if 0
221private:
222 static refcounted *rc_first;
223 refcounted *rc_next;
128#endif 224#endif
129 225
226 HV *self; // CF+ perl self
227 AV *cb; // CF+ callbacks
228 shstr attach; // generic extension attachment information
229
230 void sever_self (); // sever this object from its self, if it has one.
231 void optimise (); // possibly save some memory by destroying unneeded data
232
233 attachable ()
234 : flags (0), self (0), cb (0), attach (0)
235 {
236 }
237
238 attachable (const attachable &src)
239 : flags (0), self (0), cb (0), attach (src.attach)
240 {
241 }
242
243 // set a custom key to the given value, or delete it if value = 0
244 void set_key (const char *key, const char *value = 0, bool is_utf8 = 0);
245
246 void set_key_text (const char *key, const char *value = 0)
247 {
248 set_key (key, value, 1);
249 }
250
251 void set_key_data (const char *key, const char *value = 0)
252 {
253 set_key (key, value, 0);
254 }
255
256 attachable &operator =(const attachable &src);
257
258 // used to _quickly_ device wether to shortcut the evaluation
259 bool should_invoke (event_type event)
260 {
261 return ev_want_event [event] || cb;
262 }
263
264 bool invoke (event_type event, ...);
265
266 MTH void instantiate ();
267 void reattach ();
268
269protected:
270 // do the real refcount checking work
271 void do_check ();
272
273 // the method that does the real destroy work
274 virtual void do_destroy ();
275
276 // destructor is protected, should not be called by anybody
277 virtual ~attachable ();
278};
279
280// the global object is a pseudo object that cares for the global events
281struct global : attachable
282{
283 void gather_callbacks (AV *&callbacks, event_type event) const;
284};
285
286extern struct global gbl_ev;
287
288//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
289
290INTERFACE_CLASS(object_freezer)
291struct object_freezer : dynbuf_text
292{
293 AV *av;
294
295 object_freezer ();
296 ~object_freezer ();
297
298 void put (attachable *ext);
299
300 // used only for user-defined key-value pairs
301 void put (shstr_tmp k, shstr_tmp v)
302 {
303 add (k);
304
305 if (expect_true (v))
306 add (' '), add (v);
307
308 add ('\n');
309 }
310
311 template<typename T>
312 void put_kw_string (keyword k, const T &v)
313 {
314 int klen = keyword_len [k];
315 int vlen = v ? strlen (v) + 1 : 0;
316
317 char *p = (char *)alloc (klen + vlen + 1);
318
319 memcpy (p, keyword_str [k], klen); p += klen;
320
321 if (expect_true (v))
322 {
323 *p++ = ' '; vlen--;
324 memcpy (p, v, vlen); p += vlen;
325 }
326
327 *p = '\n';
328 }
329
330 void put (keyword k, const char *v = 0)
331 {
332 put_kw_string (k, v);
333 }
334
335 void put (keyword k, shstr_tmp v)
336 {
337 put_kw_string (k, v);
338 }
339
340 void put (keyword k, double v)
341 {
342 force (MAX_KEYWORD_LEN + 2 + 32);
343 fadd (keyword_str [k], keyword_len [k]);
344 fadd (' ');
345 falloc (sprintf (ptr, "%.7g", v));
346 fadd ('\n');
347 }
348
349 void put_(keyword k, sint64 v)
350 {
351 force (MAX_KEYWORD_LEN + 2 + sint64_digits);
352 fadd (keyword_str [k], keyword_len [k]);
353 fadd (' ');
354 add (v);
355 fadd ('\n');
356 }
357
358 void put_(keyword k, sint32 v)
359 {
360 force (MAX_KEYWORD_LEN + 2 + sint32_digits);
361 fadd (keyword_str [k], keyword_len [k]);
362 fadd (' ');
363 add (v);
364 fadd ('\n');
365 }
366
367 void put (keyword k, float v) { put (k, (double)v); }
368 void put (keyword k, signed char v) { put_(k, (sint32)v); }
369 void put (keyword k, unsigned char v) { put_(k, (sint32)v); }
370 void put (keyword k, signed short v) { put_(k, (sint32)v); }
371 void put (keyword k, unsigned short v) { put_(k, (sint32)v); }
372 void put (keyword k, signed int v) { put_(k, (sint32)v); }
373 void put (keyword k, unsigned int v) { put_(k, (sint64)v); }
374 void put (keyword k, signed long v) { put_(k, (sint64)v); }
375 void put (keyword k, unsigned long v) { put_(k, (sint64)v); }
376 void put (keyword k, signed long long v) { put_(k, (sint64)v); }
377 void put (keyword k, unsigned long long v) { put_(k, (sint64)v); }
378
379 void put (keyword kbeg, keyword kend, shstr_tmp v)
380 {
381 force (MAX_KEYWORD_LEN + 1);
382 fadd (keyword_str [kbeg], keyword_len [kbeg]); fadd ('\n');
383
384 if (expect_true (v))
385 {
386 add (v);
387 add ('\n');
388 }
389
390 force (MAX_KEYWORD_LEN + 1);
391 fadd (keyword_str [kend], keyword_len [kend]); fadd ('\n');
392 }
393
394 void put (keyword k, archetype *v);
395 void put (keyword k, treasurelist *v);
396 void put (keyword k, faceinfo *v);
397
398 template<typename T>
399 void put (keyword k, const refptr<T> &v)
400 {
401 put (k, (T *)v);
402 }
403
404 MTH bool save (const_octet_string path);
405 char *as_string (); // like strdup
406
407 operator bool () { return !!av; }
408};
409
410INTERFACE_CLASS(object_thawer)
411struct object_thawer
412{
413 char *line; // current beginning of line
414 SV *text; // text part
415 AV *av; // perl part
416 int linenum;
417 keyword kw;
418 char *kw_str; // the keyword parsed, as string
419 char *value; // the value, or 0 if no value
420 const char *value_nn; // the value, or the empty string if no value
421 const char *name;
422
423 operator bool () const { return !!text; }
424
425 object_thawer (const char *path = 0);
426 object_thawer (const char *data, AV *perlav);
427 ~object_thawer ();
428
429 void get (attachable *obj, int oid);
430
431 // parse next line
432 MTH void next ();
433 // skip the current key-value (usually fetch next line, for
434 // multiline-fields, skips till the corresponding end-kw
435 MTH void skip ();
436 MTH void skip_block (); // skips till and over KW_end
437
438 char *get_str () { return value; } // may be 0
439 void get_ml (keyword kend, shstr &sh);
440
441 void get_ornull (shstr &sh) const { sh = value; }
442 void get (shstr &sh) const { sh = value; } // might want to check for non-null here
443
444 bool get_bool () const { return *value_nn == '1'; }
445 sint32 get_sint32 () const;
446 sint64 get_sint64 () const { return strtoll (value_nn, 0, 10); }
447 double get_double () const { return strtod (value_nn, 0); }
448
449 void get (float &v) { v = get_double (); }
450 void get (double &v) { v = get_double (); }
451
452 void get (bool &i) { i = get_bool (); }
453 void get (sint8 &i) { i = get_sint32 (); }
454 void get (uint8 &i) { i = get_sint32 (); }
455 void get (sint16 &i) { i = get_sint32 (); }
456 void get (uint16 &i) { i = get_sint32 (); }
457 void get (sint32 &i) { i = get_sint32 (); }
458
459 void get (uint32 &i) { i = get_sint64 (); }
460 void get (sint64 &i) { i = get_sint64 (); }
461
462 MTH void parse_warn (const char *msg);
463 MTH bool parse_error (const char *type = 0, const char *name = 0, bool skip = true);
464
465 struct delayed_ref {
466 attachable *op;
467 object_ptr *ptr;
468 const char *ref;
469 };
470 std::vector<delayed_ref> delrefs;
471
472 void delayed_deref (attachable *op, object_ptr &ptr, const char *ref);
473 MTH void resolve_delayed_derefs (bool deref = true);
474};
475
476//TODO: remove
477char *fgets (char *s, int n, object_thawer &thawer);
478
479//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
480
481struct coroapi {
482 static struct CoroAPI *GCoroAPI;
483
484 static EV_ATOMIC_T cede_pending;
485
486 static int nready () { return CORO_NREADY; }
487 static int cede () { cede_pending = 0; return CORO_CEDE ; }
488
489 static void do_cede_to_tick ();
490
491 // actually cede's far more often
492 static bool cede_to_tick ()
493 {
494 if (expect_true (!cede_pending))
495 return false;
496
497 do_cede_to_tick ();
498 return true;
499 }
500
501 static void wait_for_tick ();
502 static void wait_for_tick_begin ();
503};
504
505struct evapi
506{
507 static struct EVAPI *GEVAPI;
508};
509
510struct iow : ev_io, evapi, callback<void (iow &, int)>
511{
512 static void thunk (EV_P_ struct ev_io *w_, int revents)
513 {
514 iow &w = *static_cast<iow *>(w_);
515
516 w (w, revents);
517 }
518
519 template<class O, class M>
520 iow (O object, M method)
521 : callback<void (iow &, int)> (object, method)
522 {
523 ev_init ((ev_io *)this, thunk);
524 }
525
526 void prio (int prio)
527 {
528 ev_set_priority ((ev_io *)this, prio);
529 }
530
531 void set (int fd, int events)
532 {
533 ev_io_set ((ev_io *)this, fd, events);
534 }
535
536 int poll () const { return events; }
537
538 void poll (int events);
539
540 void start ()
541 {
542 ev_io_start (EV_DEFAULT, (ev_io *)this);
543 }
544
545 void stop ()
546 {
547 ev_io_stop (EV_DEFAULT, (ev_io *)this);
548 }
549
550 ~iow ()
551 {
552 stop ();
553 }
554};
555
556struct asyncw : ev_async, evapi, callback<void (ev_async &, int)>
557{
558 static void thunk (EV_P_ struct ev_async *w_, int revents)
559 {
560 asyncw &w = *static_cast<asyncw *>(w_);
561
562 w (w, revents);
563 }
564
565 template<class O, class M>
566 asyncw (O object, M method)
567 : callback<void (asyncw &, int)> (object, method)
568 {
569 ev_init ((ev_async *)this, thunk);
570 }
571
572 void start ()
573 {
574 ev_async_start (EV_DEFAULT, (ev_async *)this);
575 }
576
577 void stop ()
578 {
579 ev_async_stop (EV_DEFAULT, (ev_async *)this);
580 }
581
582 ~asyncw ()
583 {
584 stop ();
585 }
586};
587
588#endif
589

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