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Comparing deliantra/server/include/cfperl.h (file contents):
Revision 1.2 by root, Thu Aug 24 17:29:30 2006 UTC vs.
Revision 1.56 by root, Thu Feb 15 21:07:49 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
73enum event_klass
74{
75 KLASS_NONE,
76 KLASS_GLOBAL,
77 KLASS_ATTACHABLE,
78 KLASS_CLIENT,
79 KLASS_PLAYER,
80 KLASS_OBJECT,
81 KLASS_MAP,
82 KLASS_COMMAND,
83};
84
24enum event_type { 85enum event_type
25# define def(name) EV_ ## name, 86{
87# define def(klass,name) EVENT_ ## klass ## _ ## name,
26# include "eventinc.h" 88# include "eventinc.h"
27# undef def 89# undef def
90 NUM_EVENT_TYPES
28}; 91};
29 92
30#define DT_INT(v) DT_INT , (int)(v) 93#define ARG_AV(o) DT_AV , static_cast<AV *> (o)
31#define DT_LONG(v) DT_LONG , (long)(v) 94#define ARG_INT(v) DT_INT , static_cast<int> (v)
95#define ARG_INT64(v) DT_INT64 , static_cast<sint64> (v)
32#define DT_DOUBLE(v) DT_DOUBLE, (double)(v) 96#define ARG_DOUBLE(v) DT_DOUBLE, static_cast<double> (v)
33#define DT_STRING(v) DT_STRING, (char *)(v) 97#define ARG_STRING(v) DT_STRING, static_cast<const char *> (v)
34#define DT_DATA(s,l) DT_DATA , (void *)(s), (l) 98#define ARG_DATA(s,l) DT_DATA , static_cast<const void *> (s), int (l)
35#define DT_OBJECT(o) DT_OBJECT, (object *)(o) 99#define ARG_OBJECT(o) DT_OBJECT, (void *)(static_cast<object *> (o))
36#define DT_MAP(o) DT_MAP , (map *)(o) 100#define ARG_MAP(o) DT_MAP , (void *)(static_cast<maptile *> (o))
37#define DT_PLAYER(o) DT_PLAYER, (player *)(o) 101#define ARG_PLAYER(o) DT_PLAYER, (void *)(static_cast<player *> (o))
38#define DT_ARCH(o) DT_ARCH , (archetype *)(o) 102#define ARG_ARCH(o) DT_ARCH , (void *)(static_cast<archetype *> (o))
39#define DT_PARTY(o) DT_PARTY , (party *)(o) 103#define ARG_CLIENT(o) DT_CLIENT, (void *)(static_cast<client *> (o))
40#define DT_REGION(o) DT_REGION, (region *)(o) 104#define ARG_PARTY(o) DT_PARTY , (void *)(static_cast<party *> (o))
105#define ARG_REGION(o) DT_REGION, (void *)(static_cast<region *> (o))
41 106
42#define INVOKE(event, ...) cfperl_invoke ("cf::invoke" , EV_ # event, __VA_ARGS__, DT_END) 107// the ", ## __VA_ARGS" is, unfortunately, a gnu-cpp extension
43// should be called on all objects, should be optimised
44#define INVOKE_ON(object,event, ...) cfperl_invoke ("cf::invoke_on" , EV_ # event, DT_OBJECT(object), __VA_ARGS__, DT_END)
45 108
46int cfperl_invoke (const char *klass, event_type event, ...); 109// all these return true when the normal event processing should be skipped (if any)
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)
47 116
48void cfperl_main (); 117//TODO should index into @result
118#define RESULT(idx,type) cfperl_result_ ## type (idx)
119#define RESULT_DOUBLE(idx) RESULT(idx, DOUBLE)
120#define RESULT_INT(idx) RESULT(idx, INT)
49 121
122double cfperl_result_DOUBLE (int idx);
123int cfperl_result_INT (int idx);
124
125//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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 mutable int ACC (RW, refcnt);
142 int ACC (RW, flags);
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;
50#endif 165#endif
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
340int fprintf (object_freezer &freezer, const char *format, ...);
341int 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_kv ();
363 //TODO: remove
364 keyword get_kv ()
365 {
366 next_kv ();
367 return kw;
368 }
369
370 // skip the current key-value (usually fetch next line, for
371 // multiline-fields, skips untilt he corresponding end-kw
372 void skip_kv ();
373
374 const 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 int cede_counter;
412
413 static void cede_every (int count)
414 {
415 if (++cede_counter >= count)
416 {
417 cede_counter = 0;
418
419 if (coroapi::nready ())
420 coroapi::cede ();
421 }
422 }
423};
424
425struct watcher_base
426{
427 static struct EventAPI *GEventAPI;
428};
429
430template<class base>
431struct watcher : watcher_base
432{
433 base *pe;
434
435 void start (bool repeat = false) { GEventAPI->start ((pe_watcher *)pe, repeat); }
436 void stop (bool cancel_events = false) { GEventAPI->stop ((pe_watcher *)pe, cancel_events); }
437 void now () { GEventAPI->now ((pe_watcher *)pe); }
438 void suspend () { GEventAPI->suspend ((pe_watcher *)pe); }
439 void resume () { GEventAPI->resume ((pe_watcher *)pe); }
440
441 void prio (int new_prio) { ((pe_watcher *)pe)->prio = new_prio; }
442
443 ~watcher ()
444 {
445 cancel ();
446 }
447
448private:
449 void cancel () { GEventAPI->cancel ((pe_watcher *)pe); } // private
450};
451
452struct iw : watcher<pe_idle>, callback<void (iw &)>
453{
454 template<class O, class M>
455 iw (O object, M method)
456 : callback<void (iw &)> (object, method)
457 {
458 alloc ();
459 }
460
461private:
462 void alloc ();
463};
464
465struct iow : watcher<pe_io>, callback<void (iow &, int)>
466{
467 template<class O, class M>
468 iow (O object, M method)
469 : callback<void (iow &, int)> (object, method)
470 {
471 alloc ();
472 }
473
474 void fd (int fd);
475 int poll ();
476 void poll (int events);
477
478private:
479 void alloc ();
480};
481
482#endif
483

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