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Comparing deliantra/server/include/cfperl.h (file contents):
Revision 1.4 by root, Fri Aug 25 15:21:56 2006 UTC vs.
Revision 1.62 by root, Tue Apr 17 10:06:33 2007 UTC

… …
2// cfperl.h perl interface 2// cfperl.h perl interface
3// 3//
4#ifndef CFPERL_H__ 4#ifndef CFPERL_H__
5#define CFPERL_H__ 5#define CFPERL_H__
6 6
7// could have used templates, but a more traditional C api 7#include <cstdio>
8// uses more explicit typing which is ok for this purpose.
9enum data_type {
10 DT_END, // no further arguments
11 DT_INT,
12 DT_LONG,
13 DT_DOUBLE,
14 DT_STRING, // 0-terminated string
15 DT_DATA, // string + length
16 DT_OBJECT,
17 DT_MAP,
18 DT_PLAYER,
19 DT_ARCH,
20 DT_PARTY,
21 DT_REGION,
22};
23 8
9using namespace std;
10
11#include <EXTERN.h>
12#include <perl.h>
13#include <XSUB.h>
14
15#include <EventAPI.h>
16#include <CoroAPI.h>
17
18#include "util.h"
19#include "keyword.h"
20#include "dynbuf.h"
21#include "callback.h"
22
23//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
24
25// optimisations/workaround for functions requiring my_perl in scope (anti-bloat)
26#undef localtime
27#undef srand48
28#undef drand48
29#undef srandom
30#undef readdir
31#undef getprotobyname
32#undef gethostbyname
33#undef ctime
34#undef strerror
35
36// same here, massive symbol spamming
37#undef do_open
38#undef do_close
39#undef ref
40#undef seed
41
42// perl bug #40256: perl does overwrite those with reentrant versions
43// but does not initialise their state structures.
44#undef random
45#undef crypt
46
47//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
48
49// some macros to simplify perl in-calls
50
51#define CHECK_ERROR \
52 if (SvTRUE (ERRSV)) \
53 LOG (llevError, "runtime error in %s: %s\n", __func__, SvPVutf8_nolen (ERRSV));
54
55#define CALL_BEGIN(args) dSP; ENTER; SAVETMPS; PUSHMARK (SP); EXTEND (SP, args)
56#define CALL_ARG_SV(sv) PUSHs (sv_2mortal (sv)) // separate because no refcount inc
57#define CALL_ARG(expr) PUSHs (sv_2mortal (to_sv (expr)))
58#define CALL_CALL(name, flags) PUTBACK; int count = call_pv (name, (flags) | G_EVAL); SPAGAIN;
59#define CALL_END CHECK_ERROR; FREETMPS; LEAVE
60
61//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
62
63void cfperl_init ();
64void cfperl_main ();
65void cfperl_emergency_save ();
66void cfperl_cleanup (int make_core);
67
68//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
69
70// virtual server time, excluding time jumps and lag
71extern double runtime;
72
24enum event_klass { 73enum event_klass
74{
75 KLASS_NONE,
25 KLASS_GLOBAL, 76 KLASS_GLOBAL,
77 KLASS_ATTACHABLE,
78 KLASS_CLIENT,
26 KLASS_PLAYER, 79 KLASS_PLAYER,
27 KLASS_OBJECT, 80 KLASS_OBJECT,
28 KLASS_MAP, 81 KLASS_MAP,
82 KLASS_COMMAND,
29}; 83};
30 84
31enum event_type { 85enum event_type
86{
32# define def(klass,name) EV_ ## klass ## name, 87# define def(klass,name) EVENT_ ## klass ## _ ## name,
33# include "eventinc.h" 88# include "eventinc.h"
34# undef def 89# undef def
35 NUM_EVENT_TYPES 90 NUM_EVENT_TYPES
36}; 91};
37 92
93#define ARG_AV(o) DT_AV , static_cast<AV *> (o)
38#define ARG_INT(v) DT_INT , static_cast<int> (v) 94#define ARG_INT(v) DT_INT , static_cast<int> (v)
39#define ARG_LONG(v) DT_LONG , static_cast<long> (v) 95#define ARG_INT64(v) DT_INT64 , static_cast<sint64> (v)
40#define ARG_DOUBLE(v) DT_DOUBLE, static_cast<double> (v) 96#define ARG_DOUBLE(v) DT_DOUBLE, static_cast<double> (v)
41#define ARG_STRING(v) DT_STRING, static_cast<char *> (v) 97#define ARG_STRING(v) DT_STRING, static_cast<const char *> (v)
42#define ARG_DATA(s,l) DT_DATA , static_cast<void *> (s), (l) 98#define ARG_DATA(s,l) DT_DATA , static_cast<const void *> (s), int (l)
43#define ARG_OBJECT(o) DT_OBJECT, static_cast<struct object *> (o) 99#define ARG_OBJECT(o) DT_OBJECT, (void *)(static_cast<object *> (o))
44#define ARG_MAP(o) DT_MAP , static_cast<struct mapstruct *> (o) 100#define ARG_MAP(o) DT_MAP , (void *)(static_cast<maptile *> (o))
45#define ARG_PLAYER(o) DT_PLAYER, static_cast<struct pl *> (o) 101#define ARG_PLAYER(o) DT_PLAYER, (void *)(static_cast<player *> (o))
46#define ARG_ARCH(o) DT_ARCH , static_cast<struct archetype *> (o) 102#define ARG_ARCH(o) DT_ARCH , (void *)(static_cast<archetype *> (o))
103#define ARG_CLIENT(o) DT_CLIENT, (void *)(static_cast<client *> (o))
47#define ARG_PARTY(o) DT_PARTY , static_cast<struct party *> (o) 104#define ARG_PARTY(o) DT_PARTY , (void *)(static_cast<party *> (o))
48#define ARG_REGION(o) DT_REGION, static_cast<struct region *> (o) 105#define ARG_REGION(o) DT_REGION, (void *)(static_cast<region *> (o))
49 106
50// the ", ## __VA_ARGS" is, unfortunately, a gnu-cpp extension 107// the ", ## __VA_ARGS" is, unfortunately, a gnu-cpp extension
51 108
52// all these return true when the normal event processing should be skipped (if any) 109// all these return true when the normal event processing should be skipped (if any)
53#define INVOKE(klass, event, ...) cfperl_invoke (EV_ ## klass ## event, ## __VA_ARGS__, DT_END) 110#define INVOKE_GLOBAL(event, ...) gbl_ev.invoke (EVENT_ ## GLOBAL ## _ ## event, ## __VA_ARGS__, DT_END)
111#define INVOKE_ATTACHABLE(event, obj, ...) (obj)->invoke (EVENT_ ## ATTACHABLE ## _ ## event, ## __VA_ARGS__, DT_END)
112#define INVOKE_OBJECT(event, obj, ...) (obj)->invoke (EVENT_ ## OBJECT ## _ ## event, ## __VA_ARGS__, DT_END)
113#define INVOKE_CLIENT(event, obj, ...) (obj)->invoke (EVENT_ ## CLIENT ## _ ## event, ## __VA_ARGS__, DT_END)
114#define INVOKE_PLAYER(event, obj, ...) (obj)->invoke (EVENT_ ## PLAYER ## _ ## event, ## __VA_ARGS__, DT_END)
115#define INVOKE_MAP(event, obj, ...) (obj)->invoke (EVENT_ ## MAP ## _ ## event, ## __VA_ARGS__, DT_END)
54 116
55#define INVOKE_GLOBAL(event, ...) INVOKE (GLOBAL, event, ## __VA_ARGS__) 117//TODO should index into @result
56#define INVOKE_OBJECT(event, op, ...) INVOKE (OBJECT, event, ARG_OBJECT (op), ## __VA_ARGS__) 118#define RESULT(idx,type) cfperl_result_ ## type (idx)
57#define INVOKE_PLAYER(event, pl, ...) INVOKE (PLAYER, event, ARG_PLAYER (pl), ## __VA_ARGS__) 119#define RESULT_DOUBLE(idx) RESULT(idx, DOUBLE)
58#define INVOKE_MAP(event, map, ...) INVOKE (MAP , event, ARG_MAP (map) , ## __VA_ARGS__) 120#define RESULT_INT(idx) RESULT(idx, INT)
59 121
60bool cfperl_invoke (event_type event, ...); 122double cfperl_result_DOUBLE (int idx);
61void cfperl_free_ob (object *op); 123int cfperl_result_INT (int idx);
62 124
63void cfperl_init (); 125//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
64void cfperl_main ();
65 126
127INTERFACE_CLASS (attachable)
128struct attachable
129{
130 static MGVTBL vtbl;
131
132 static unordered_vector<attachable *> mortals;
133 MTH static void check_mortals ();
134
135 enum {
136 F_DESTROYED = 0x01,
137 F_DEBUG_TRACE = 0x02,
138 };
139
140 // object is delete'd after the refcount reaches 0
141 int ACC (RW, flags);
142 mutable int ACC (RW, refcnt);
143
144 MTH void refcnt_inc () const { ++refcnt; }
145 MTH void refcnt_dec () const { --refcnt; }
146
147 MTH int refcnt_cnt () const;
148 // check wether the object has died and destroy
149 MTH void refcnt_chk () { if (refcnt <= 0) do_check (); }
150
151 // destroy the object unless it was already destroyed
152 // this politely asks everybody interested the reduce
153 // the refcount to 0 as soon as possible.
154 MTH void destroy ();
155
156 // return wether an object was destroyed already
157 MTH bool destroyed () const { return flags & F_DESTROYED; }
158
159 virtual void gather_callbacks (AV *&callbacks, event_type event) const;
160
161#if 0
162private:
163 static refcounted *rc_first;
164 refcounted *rc_next;
66#endif 165#endif
67 166
167 HV *self; // CF+ perl self
168 AV *cb; // CF+ callbacks
169 shstr attach; // generic extension attachment information
170
171 void sever_self (); // sever this object from its self, if it has one.
172 void optimise (); // possibly save some memory by destroying unneeded data
173
174 attachable ()
175 : flags (0), refcnt (0), self (0), cb (0), attach (0)
176 {
177 }
178
179 attachable (const attachable &src)
180 : flags (0), refcnt (0), self (0), cb (0), attach (src.attach)
181 {
182 }
183
184 virtual ~attachable ();
185
186 attachable &operator =(const attachable &src);
187
188 bool invoke (event_type event, ...);
189 MTH void instantiate ();
190 void reattach ();
191
192protected:
193 // do the real refcount checking work
194 void do_check ();
195
196 // the method that does the real destroy work
197 virtual void do_destroy ();
198};
199
200// the global object is a pseudo object that cares for the global events
201struct global : attachable
202{
203 void gather_callbacks (AV *&callbacks, event_type event) const;
204};
205
206extern struct global gbl_ev;
207
208//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
209
210struct object_freezer : dynbuf
211{
212 AV *av;
213
214 object_freezer ();
215 ~object_freezer ();
216
217 void put (attachable *ext);
218
219 // used only for user-defined key-value pairs
220 void put (const shstr &k, const shstr &v)
221 {
222 add (k);
223
224 if (v)
225 add (' '), add (v);
226
227 add ('\n');
228 }
229
230 //TODO//temporary, used only for saving body locations
231 void put (const char *k, int v)
232 {
233 add (k);
234 add (' ');
235 add (sint32 (v));
236 add ('\n');
237 }
238
239 template<typename T>
240 void put_string (keyword k, const T &v)
241 {
242 int klen = keyword_len [k];
243 int vlen = v ? strlen (v) + 1 : 0;
244
245 char *p = (char *)alloc (klen + vlen + 1);
246
247 memcpy (p, keyword_str [k], klen); p += klen;
248
249 if (v)
250 {
251 *p++ = ' '; vlen--;
252 memcpy (p, v, vlen); p += vlen;
253 }
254
255 *p = '\n';
256 }
257
258 void put (keyword k, const char *v = 0)
259 {
260 put_string (k, v);
261 }
262
263 void put (keyword k, const shstr &v)
264 {
265 put_string (k, v);
266 }
267
268 void put (keyword k, double v)
269 {
270 char buf [128];
271
272 snprintf (buf, 128, "%.7g", v);
273
274 put (k, (const char *)buf);
275 }
276
277 void put_(keyword k, sint64 v)
278 {
279 add (keyword_str [k], keyword_len [k]);
280 add (' ');
281 add (v);
282 add ('\n');
283 }
284
285 void put_(keyword k, sint32 v)
286 {
287 add (keyword_str [k], keyword_len [k]);
288 add (' ');
289 add (v);
290 add ('\n');
291 }
292
293 void put (keyword kbeg, keyword kend, const shstr &v)
294 {
295 add (keyword_str [kbeg], keyword_len [kbeg]); add ('\n');
296
297 if (v)
298 {
299 add (v);
300 add ('\n');
301 }
302
303 add (keyword_str [kend], keyword_len [kend]); add ('\n');
304 }
305
306 void put (keyword k, float v) { put (k, (double)v); }
307 void put (keyword k, signed char v) { put_(k, (sint32)v); }
308 void put (keyword k, unsigned char v) { put_(k, (sint32)v); }
309 void put (keyword k, signed short v) { put_(k, (sint32)v); }
310 void put (keyword k, unsigned short v) { put_(k, (sint32)v); }
311 void put (keyword k, signed int v) { put_(k, (sint32)v); }
312 void put (keyword k, unsigned int v) { put_(k, (sint64)v); }
313 void put (keyword k, signed long v) { put_(k, (sint64)v); }
314 void put (keyword k, unsigned long v) { put_(k, (sint64)v); }
315 void put (keyword k, signed long long v) { put_(k, (sint64)v); }
316 void put (keyword k, unsigned long long v) { put_(k, (sint64)v); }
317
318 template<typename T>
319 void put (keyword k, const T *v)
320 {
321 if (v)
322 put (k, v->name);
323 else
324 put (k, (const char *)0);
325 }
326
327 template<typename T>
328 void put (keyword k, const refptr<T> &v)
329 {
330 put (k, (T *)v);
331 }
332
333 bool save (const char *path);
334 char *as_string (); // like strdup
335
336 operator bool () { return !!av; }
337};
338
339// compatibility support, should be removed when no longer needed
340void fprintf (object_freezer &freezer, const char *format, ...);
341void fputs (const char *s, object_freezer &freezer);
342
343struct object_thawer
344{
345 SV *text; // text part
346 AV *av; // perl part
347 int linenum;
348 char *line; // current beginning of line
349 keyword kw;
350 char *kw_str, *value;
351 const char *name;
352
353 operator bool () { return !!text; }
354
355 object_thawer (const char *path = 0);
356 object_thawer (const char *data, AV *perlav);
357 ~object_thawer ();
358
359 void get (attachable *obj, int oid);
360
361 // parse next line
362 void next ();
363 // skip the current key-value (usually fetch next line, for
364 // multiline-fields, skips untilt he corresponding end-kw
365 void skip ();
366
367 //TODO: remove, deprecated
368 keyword get_kv ()
369 {
370 next ();
371 return kw;
372 }
373
374 char *get_str () { return value; } // may be 0
375
376 void get (shstr &sh) const;
377 void get_ornull (shstr &sh) const { sh = value; }
378 void get_ml (keyword kend, shstr &sh);
379
380 sint32 get_sint32 () const;
381 sint64 get_sint64 () const;
382 double get_double () const;
383
384 void get (float &v) { v = get_double (); }
385 void get (double &v) { v = get_double (); }
386
387 void get (bool &i) { i = get_sint32 (); }
388 void get (sint8 &i) { i = get_sint32 (); }
389 void get (uint8 &i) { i = get_sint32 (); }
390 void get (sint16 &i) { i = get_sint32 (); }
391 void get (uint16 &i) { i = get_sint32 (); }
392 void get (sint32 &i) { i = get_sint32 (); }
393
394 void get (uint32 &i) { i = get_sint64 (); }
395 void get (sint64 &i) { i = get_sint64 (); }
396
397 bool parse_error (const char *type = 0, const char *name = 0, bool skip = true);
398};
399
400//TODO: remove
401char *fgets (char *s, int n, object_thawer &thawer);
402
403//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
404
405struct coroapi {
406 static struct CoroAPI *GCoroAPI;
407
408 static int nready () { return CORO_NREADY; }
409 static int cede () { return CORO_CEDE ; }
410
411 static double (*time)();
412 static double next_cede;
413 static int cede_counter;
414
415 static void do_cede_every ();
416 static void do_cede_to_tick ();
417 static void do_cede_to_tick_every ();
418
419 static void cede_every (int count)
420 {
421 if (++cede_counter >= count)
422 do_cede_every ();
423 }
424
425 static void cede_to_tick ()
426 {
427 if (time () >= next_cede)
428 do_cede_to_tick ();
429 }
430
431 static void cede_to_tick_every (int count)
432 {
433 if (++cede_counter >= count)
434 cede_to_tick ();
435 }
436
437 static void wait_for_tick ();
438 static void wait_for_tick_begin ();
439};
440
441struct watcher_base
442{
443 static struct EventAPI *GEventAPI;
444};
445
446template<class base>
447struct watcher : watcher_base
448{
449 base *pe;
450
451 void start (bool repeat = false) { GEventAPI->start ((pe_watcher *)pe, repeat); }
452 void stop (bool cancel_events = false) { GEventAPI->stop ((pe_watcher *)pe, cancel_events); }
453 void now () { GEventAPI->now ((pe_watcher *)pe); }
454 void suspend () { GEventAPI->suspend ((pe_watcher *)pe); }
455 void resume () { GEventAPI->resume ((pe_watcher *)pe); }
456
457 void prio (int new_prio) { ((pe_watcher *)pe)->prio = new_prio; }
458
459 ~watcher ()
460 {
461 cancel ();
462 }
463
464private:
465 void cancel () { GEventAPI->cancel ((pe_watcher *)pe); } // private
466};
467
468struct iw : watcher<pe_idle>, callback<void (iw &)>
469{
470 template<class O, class M>
471 iw (O object, M method)
472 : callback<void (iw &)> (object, method)
473 {
474 alloc ();
475 }
476
477private:
478 void alloc ();
479};
480
481struct iow : watcher<pe_io>, callback<void (iow &, int)>
482{
483 template<class O, class M>
484 iow (O object, M method)
485 : callback<void (iow &, int)> (object, method)
486 {
487 alloc ();
488 }
489
490 void fd (int fd);
491 int poll ();
492 void poll (int events);
493
494private:
495 void alloc ();
496};
497
498#endif
499

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