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Comparing deliantra/server/include/cfperl.h (file contents):
Revision 1.1 by root, Thu Aug 24 13:13:49 2006 UTC vs.
Revision 1.67 by root, Sun May 27 23:14:37 2007 UTC

1// 1//
2// cfperl.h perl interface 2// cfperl.h perl interface
3// 3//
4#ifndef CFPERL_H__
5#define CFPERL_H__
4 6
7#include <cstdarg>
8#include <cstdio>
9#include <bitset>
10
11using namespace std;
12
13#include <EXTERN.h>
14#include <perl.h>
15#include <XSUB.h>
16
17#include <EventAPI.h>
18#include <CoroAPI.h>
19
20#include "util.h"
21#include "keyword.h"
22#include "dynbuf.h"
23#include "callback.h"
24
25//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
26
27// optimisations/workaround for functions requiring my_perl in scope (anti-bloat)
28#undef localtime
29#undef srand48
30#undef drand48
31#undef srandom
32#undef readdir
33#undef getprotobyname
34#undef gethostbyname
35#undef ctime
36#undef strerror
37
38// same here, massive symbol spamming
39#undef do_open
40#undef do_close
41#undef ref
42#undef seed
43
44// perl bug #40256: perl does overwrite those with reentrant versions
45// but does not initialise their state structures.
46#undef random
47#undef crypt
48
49//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
50
51// some macros to simplify perl in-calls
52
53#define CHECK_ERROR \
54 if (SvTRUE (ERRSV)) \
55 LOG (llevError, "runtime error in %s: %s\n", __func__, SvPVutf8_nolen (ERRSV));
56
57#define CALL_BEGIN(args) dSP; ENTER; SAVETMPS; PUSHMARK (SP); EXTEND (SP, args)
58#define CALL_ARG_SV(sv) PUSHs (sv_2mortal (sv)) // separate because no refcount inc
59#define CALL_ARG(expr) PUSHs (sv_2mortal (to_sv (expr)))
60#define CALL_CALL(name, flags) PUTBACK; int count = call_pv (name, (flags) | G_EVAL); SPAGAIN;
61#define CALL_END CHECK_ERROR; FREETMPS; LEAVE
62
63//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
64
65void cfperl_init ();
5void cfperl_main (); 66void cfperl_main ();
67void cfperl_emergency_save ();
68void cfperl_cleanup (int make_core);
69void cfperl_make_book (object *book, int level);
70
71//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
72
73// virtual server time, excluding time jumps and lag
74extern double runtime;
75
76enum event_klass
77{
78 KLASS_NONE,
79 KLASS_GLOBAL,
80 KLASS_ATTACHABLE,
81 KLASS_CLIENT,
82 KLASS_PLAYER,
83 KLASS_OBJECT,
84 KLASS_MAP,
85 KLASS_COMMAND,
86};
87
88enum event_type
89{
90# define def(klass,name) EVENT_ ## klass ## _ ## name,
91# include "eventinc.h"
92# undef def
93 NUM_EVENT_TYPES
94};
95
96// in which global events or per-type events are we interested
97extern bitset<NUM_EVENT_TYPES> ev_want_event;
98extern bitset<NUM_TYPES> ev_want_type;
99
100#define ARG_AV(o) DT_AV , static_cast<AV *> (o)
101#define ARG_INT(v) DT_INT , static_cast<int> (v)
102#define ARG_INT64(v) DT_INT64 , static_cast<sint64> (v)
103#define ARG_DOUBLE(v) DT_DOUBLE, static_cast<double> (v)
104#define ARG_STRING(v) DT_STRING, static_cast<const char *> (v)
105#define ARG_DATA(s,l) DT_DATA , static_cast<const void *> (s), int (l)
106#define ARG_OBJECT(o) DT_OBJECT, (void *)(static_cast<object *> (o))
107#define ARG_MAP(o) DT_MAP , (void *)(static_cast<maptile *> (o))
108#define ARG_PLAYER(o) DT_PLAYER, (void *)(static_cast<player *> (o))
109#define ARG_ARCH(o) DT_ARCH , (void *)(static_cast<archetype *> (o))
110#define ARG_CLIENT(o) DT_CLIENT, (void *)(static_cast<client *> (o))
111#define ARG_PARTY(o) DT_PARTY , (void *)(static_cast<party *> (o))
112#define ARG_REGION(o) DT_REGION, (void *)(static_cast<region *> (o))
113
114// the ", ## __VA_ARGS" is, unfortunately, a gnu-cpp extension
115#define INVOKE(obj,event, ...) (expect_false ((obj)->should_invoke (event)) ? (obj)->invoke (event, ## __VA_ARGS__, DT_END) : 0)
116#define INVOKE_GLOBAL(event, ...) INVOKE (&gbl_ev, EVENT_ ## GLOBAL ## _ ## event, ## __VA_ARGS__)
117#define INVOKE_ATTACHABLE(event, obj, ...) INVOKE (obj , EVENT_ ## ATTACHABLE ## _ ## event, ## __VA_ARGS__)
118#define INVOKE_OBJECT(event, obj, ...) INVOKE (obj , EVENT_ ## OBJECT ## _ ## event, ## __VA_ARGS__)
119#define INVOKE_CLIENT(event, obj, ...) INVOKE (obj , EVENT_ ## CLIENT ## _ ## event, ## __VA_ARGS__)
120#define INVOKE_PLAYER(event, obj, ...) INVOKE (obj , EVENT_ ## PLAYER ## _ ## event, ## __VA_ARGS__)
121#define INVOKE_MAP(event, obj, ...) INVOKE (obj , EVENT_ ## MAP ## _ ## event, ## __VA_ARGS__)
122
123//TODO should index into @result
124#define RESULT(idx,type) cfperl_result_ ## type (idx)
125#define RESULT_DOUBLE(idx) RESULT(idx, DOUBLE)
126#define RESULT_INT(idx) RESULT(idx, INT)
127
128double cfperl_result_DOUBLE (int idx);
129int cfperl_result_INT (int idx);
130
131//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
132
133INTERFACE_CLASS (attachable)
134struct attachable
135{
136 static MGVTBL vtbl;
137
138 static unordered_vector<attachable *> mortals;
139 MTH static void check_mortals ();
140
141 enum {
142 F_DESTROYED = 0x01,
143 F_DEBUG_TRACE = 0x02,
144 };
145
146 // object is delete'd after the refcount reaches 0
147 int ACC (RW, flags);
148 mutable int ACC (RW, refcnt);
149
150 MTH void refcnt_inc () const { ++refcnt; }
151 MTH void refcnt_dec () const { --refcnt; }
152
153 MTH int refcnt_cnt () const;
154 // check wether the object has died and destroy
155 MTH void refcnt_chk () { if (refcnt <= 0) do_check (); }
156
157 // destroy the object unless it was already destroyed
158 // this politely asks everybody interested the reduce
159 // the refcount to 0 as soon as possible.
160 MTH void destroy ();
161
162 // return wether an object was destroyed already
163 MTH bool destroyed () const { return flags & F_DESTROYED; }
164
165 virtual void gather_callbacks (AV *&callbacks, event_type event) const;
166
167#if 0
168private:
169 static refcounted *rc_first;
170 refcounted *rc_next;
171#endif
172
173 HV *self; // CF+ perl self
174 AV *cb; // CF+ callbacks
175 shstr attach; // generic extension attachment information
176
177 void sever_self (); // sever this object from its self, if it has one.
178 void optimise (); // possibly save some memory by destroying unneeded data
179
180 attachable ()
181 : flags (0), refcnt (0), self (0), cb (0), attach (0)
182 {
183 }
184
185 attachable (const attachable &src)
186 : flags (0), refcnt (0), self (0), cb (0), attach (src.attach)
187 {
188 }
189
190 virtual ~attachable ();
191
192 attachable &operator =(const attachable &src);
193
194 // used to _quickly_ device wether to shortcut the evaluation
195 bool should_invoke (event_type event)
196 {
197 return ev_want_event [event] || cb;
198 }
199
200 bool invoke (event_type event, ...);
201
202 MTH void instantiate ();
203 void reattach ();
204
205protected:
206 // do the real refcount checking work
207 void do_check ();
208
209 // the method that does the real destroy work
210 virtual void do_destroy ();
211};
212
213// the global object is a pseudo object that cares for the global events
214struct global : attachable
215{
216 void gather_callbacks (AV *&callbacks, event_type event) const;
217};
218
219extern struct global gbl_ev;
220
221//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
222
223struct object_freezer : dynbuf_text
224{
225 AV *av;
226
227 object_freezer ();
228 ~object_freezer ();
229
230 void put (attachable *ext);
231
232 // used only for user-defined key-value pairs
233 void put (const shstr &k, const shstr &v)
234 {
235 add (k);
236
237 if (expect_true (v))
238 add (' '), add (v);
239
240 add ('\n');
241 }
242
243 //TODO//temporary, used only for saving body locations
244 void put (const char *k, int v)
245 {
246 add (k);
247 add (' ');
248 add (sint32 (v));
249 add ('\n');
250 }
251
252 template<typename T>
253 void put_string (keyword k, const T &v)
254 {
255 int klen = keyword_len [k];
256 int vlen = v ? strlen (v) + 1 : 0;
257
258 char *p = (char *)alloc (klen + vlen + 1);
259
260 memcpy (p, keyword_str [k], klen); p += klen;
261
262 if (expect_true (v))
263 {
264 *p++ = ' '; vlen--;
265 memcpy (p, v, vlen); p += vlen;
266 }
267
268 *p = '\n';
269 }
270
271 void put (keyword k, const char *v = 0)
272 {
273 put_string (k, v);
274 }
275
276 void put (keyword k, const shstr &v)
277 {
278 put_string (k, v);
279 }
280
281 void put (keyword k, double v)
282 {
283 char buf [128];
284
285 snprintf (buf, 128, "%.7g", v);
286
287 put (k, (const char *)buf);
288 }
289
290 void put_(keyword k, sint64 v)
291 {
292 add (keyword_str [k], keyword_len [k]);
293 add (' ');
294 add (v);
295 add ('\n');
296 }
297
298 void put_(keyword k, sint32 v)
299 {
300 add (keyword_str [k], keyword_len [k]);
301 add (' ');
302 add (v);
303 add ('\n');
304 }
305
306 void put (keyword kbeg, keyword kend, const shstr &v)
307 {
308 add (keyword_str [kbeg], keyword_len [kbeg]); add ('\n');
309
310 if (expect_true (v))
311 {
312 add (v);
313 add ('\n');
314 }
315
316 add (keyword_str [kend], keyword_len [kend]); add ('\n');
317 }
318
319 void put (keyword k, float v) { put (k, (double)v); }
320 void put (keyword k, signed char v) { put_(k, (sint32)v); }
321 void put (keyword k, unsigned char v) { put_(k, (sint32)v); }
322 void put (keyword k, signed short v) { put_(k, (sint32)v); }
323 void put (keyword k, unsigned short v) { put_(k, (sint32)v); }
324 void put (keyword k, signed int v) { put_(k, (sint32)v); }
325 void put (keyword k, unsigned int v) { put_(k, (sint64)v); }
326 void put (keyword k, signed long v) { put_(k, (sint64)v); }
327 void put (keyword k, unsigned long v) { put_(k, (sint64)v); }
328 void put (keyword k, signed long long v) { put_(k, (sint64)v); }
329 void put (keyword k, unsigned long long v) { put_(k, (sint64)v); }
330
331 template<typename T>
332 void put (keyword k, const T *v)
333 {
334 if (expect_true (v))
335 put (k, v->name);
336 else
337 put (k, (const char *)0);
338 }
339
340 template<typename T>
341 void put (keyword k, const refptr<T> &v)
342 {
343 put (k, (T *)v);
344 }
345
346 bool save (const char *path);
347 char *as_string (); // like strdup
348
349 operator bool () { return !!av; }
350};
351
352struct object_thawer
353{
354 char *line; // current beginning of line
355 SV *text; // text part
356 AV *av; // perl part
357 int linenum;
358 keyword kw;
359 char *kw_str; // the keyword parsed, as string
360 char *value; // the value, or 0 if no value
361 char *value_nn; // the value, or the empty string if no value
362 const char *name;
363
364 operator bool () { return !!text; }
365
366 object_thawer (const char *path = 0);
367 object_thawer (const char *data, AV *perlav);
368 ~object_thawer ();
369
370 void get (attachable *obj, int oid);
371
372 // parse next line
373 void next ();
374 // skip the current key-value (usually fetch next line, for
375 // multiline-fields, skips untilt he corresponding end-kw
376 void skip ();
377
378 //TODO: remove, deprecated
379 keyword get_kv ()
380 {
381 next ();
382 return kw;
383 }
384
385 char *get_str () { return value; } // may be 0
386 void get_ml (keyword kend, shstr &sh);
387
388 void get_ornull (shstr &sh) const { sh = value; }
389 void get (shstr &sh) const { sh = value; } // might want to check for non-null here
390
391 bool get_bool () const { return *value_nn == '1'; }
392 sint32 get_sint32 () const;
393 sint64 get_sint64 () const { return atoll (value_nn); }
394 double get_double () const { return atof (value_nn); }
395
396 void get (float &v) { v = get_double (); }
397 void get (double &v) { v = get_double (); }
398
399 void get (bool &i) { i = get_bool (); }
400 void get (sint8 &i) { i = get_sint32 (); }
401 void get (uint8 &i) { i = get_sint32 (); }
402 void get (sint16 &i) { i = get_sint32 (); }
403 void get (uint16 &i) { i = get_sint32 (); }
404 void get (sint32 &i) { i = get_sint32 (); }
405
406 void get (uint32 &i) { i = get_sint64 (); }
407 void get (sint64 &i) { i = get_sint64 (); }
408
409 bool parse_error (const char *type = 0, const char *name = 0, bool skip = true);
410};
411
412//TODO: remove
413char *fgets (char *s, int n, object_thawer &thawer);
414
415//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
416
417struct coroapi {
418 static struct CoroAPI *GCoroAPI;
419
420 static int nready () { return CORO_NREADY; }
421 static int cede () { return CORO_CEDE ; }
422
423 static double (*time)();
424 static double next_cede;
425 static int cede_counter;
426
427 static void do_cede_every ();
428 static void do_cede_to_tick ();
429 static void do_cede_to_tick_every ();
430
431 static void cede_every (int count)
432 {
433 if (expect_false (++cede_counter >= count))
434 do_cede_every ();
435 }
436
437 static void cede_to_tick ()
438 {
439 if (expect_false (time () >= next_cede))
440 do_cede_to_tick ();
441 }
442
443 static void cede_to_tick_every (int count)
444 {
445 if (expect_false (++cede_counter >= count))
446 cede_to_tick ();
447 }
448
449 static void wait_for_tick ();
450 static void wait_for_tick_begin ();
451};
452
453struct watcher_base
454{
455 static struct EventAPI *GEventAPI;
456};
457
458template<class base>
459struct watcher : watcher_base
460{
461 base *pe;
462
463 void start (bool repeat = false) { GEventAPI->start ((pe_watcher *)pe, repeat); }
464 void stop (bool cancel_events = false) { GEventAPI->stop ((pe_watcher *)pe, cancel_events); }
465 void now () { GEventAPI->now ((pe_watcher *)pe); }
466 void suspend () { GEventAPI->suspend ((pe_watcher *)pe); }
467 void resume () { GEventAPI->resume ((pe_watcher *)pe); }
468
469 void prio (int new_prio) { ((pe_watcher *)pe)->prio = new_prio; }
470
471 ~watcher ()
472 {
473 cancel ();
474 }
475
476private:
477 void cancel () { GEventAPI->cancel ((pe_watcher *)pe); } // private
478};
479
480struct iw : watcher<pe_idle>, callback<void (iw &)>
481{
482 template<class O, class M>
483 iw (O object, M method)
484 : callback<void (iw &)> (object, method)
485 {
486 alloc ();
487 }
488
489private:
490 void alloc ();
491};
492
493struct iow : watcher<pe_io>, callback<void (iow &, int)>
494{
495 template<class O, class M>
496 iow (O object, M method)
497 : callback<void (iow &, int)> (object, method)
498 {
499 alloc ();
500 }
501
502 void fd (int fd);
503 int poll ();
504 void poll (int events);
505
506private:
507 void alloc ();
508};
509
510#endif
511

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