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Comparing deliantra/server/include/cfperl.h (file contents):
Revision 1.3 by root, Fri Aug 25 13:24:50 2006 UTC vs.
Revision 1.54 by root, Sun Feb 11 01:38:48 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 ();
66
67//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
68
69// virtual server time, excluding time jumps and lag
70extern double runtime;
71
24enum event_klass { 72enum event_klass
73{
74 KLASS_NONE,
25 KLASS_GLOBAL, 75 KLASS_GLOBAL,
76 KLASS_ATTACHABLE,
77 KLASS_CLIENT,
26 KLASS_PLAYER, 78 KLASS_PLAYER,
27 KLASS_OBJECT, 79 KLASS_OBJECT,
28 KLASS_MAP, 80 KLASS_MAP,
81 KLASS_COMMAND,
29}; 82};
30 83
31enum event_type { 84enum event_type
85{
32# define def(klass,name) EV_ ## klass ## name, 86# define def(klass,name) EVENT_ ## klass ## _ ## name,
33# include "eventinc.h" 87# include "eventinc.h"
34# undef def 88# undef def
89 NUM_EVENT_TYPES
35}; 90};
36 91
92#define ARG_AV(o) DT_AV , static_cast<AV *> (o)
37#define ARG_INT(v) DT_INT , static_cast<int> (v) 93#define ARG_INT(v) DT_INT , static_cast<int> (v)
38#define ARG_LONG(v) DT_LONG , static_cast<long> (v) 94#define ARG_INT64(v) DT_INT64 , static_cast<sint64> (v)
39#define ARG_DOUBLE(v) DT_DOUBLE, static_cast<double> (v) 95#define ARG_DOUBLE(v) DT_DOUBLE, static_cast<double> (v)
40#define ARG_STRING(v) DT_STRING, static_cast<char *> (v) 96#define ARG_STRING(v) DT_STRING, static_cast<const char *> (v)
41#define ARG_DATA(s,l) DT_DATA , static_cast<void *> (s), (l) 97#define ARG_DATA(s,l) DT_DATA , static_cast<const void *> (s), int (l)
42#define ARG_OBJECT(o) DT_OBJECT, static_cast<struct object *> (o) 98#define ARG_OBJECT(o) DT_OBJECT, (void *)(static_cast<object *> (o))
43#define ARG_MAP(o) DT_MAP , static_cast<struct mapstruct *> (o) 99#define ARG_MAP(o) DT_MAP , (void *)(static_cast<maptile *> (o))
44#define ARG_PLAYER(o) DT_PLAYER, static_cast<struct pl *> (o) 100#define ARG_PLAYER(o) DT_PLAYER, (void *)(static_cast<player *> (o))
45#define ARG_ARCH(o) DT_ARCH , static_cast<struct archetype *> (o) 101#define ARG_ARCH(o) DT_ARCH , (void *)(static_cast<archetype *> (o))
102#define ARG_CLIENT(o) DT_CLIENT, (void *)(static_cast<client *> (o))
46#define ARG_PARTY(o) DT_PARTY , static_cast<struct party *> (o) 103#define ARG_PARTY(o) DT_PARTY , (void *)(static_cast<party *> (o))
47#define ARG_REGION(o) DT_REGION, static_cast<struct region *> (o) 104#define ARG_REGION(o) DT_REGION, (void *)(static_cast<region *> (o))
48 105
49// the ", ## __VA_ARGS" is, unfortunately, a gnu-cpp extension 106// the ", ## __VA_ARGS" is, unfortunately, a gnu-cpp extension
50 107
51#define INVOKE(klass, event, ...) cfperl_invoke (EV_ ## klass ## event, ## __VA_ARGS__, DT_END) 108// all these return true when the normal event processing should be skipped (if any)
109#define INVOKE_GLOBAL(event, ...) gbl_ev.invoke (EVENT_ ## GLOBAL ## _ ## event, ## __VA_ARGS__, DT_END)
110#define INVOKE_ATTACHABLE(event, obj, ...) (obj)->invoke (EVENT_ ## ATTACHABLE ## _ ## event, ## __VA_ARGS__, DT_END)
111#define INVOKE_OBJECT(event, obj, ...) (obj)->invoke (EVENT_ ## OBJECT ## _ ## event, ## __VA_ARGS__, DT_END)
112#define INVOKE_CLIENT(event, obj, ...) (obj)->invoke (EVENT_ ## CLIENT ## _ ## event, ## __VA_ARGS__, DT_END)
113#define INVOKE_PLAYER(event, obj, ...) (obj)->invoke (EVENT_ ## PLAYER ## _ ## event, ## __VA_ARGS__, DT_END)
114#define INVOKE_MAP(event, obj, ...) (obj)->invoke (EVENT_ ## MAP ## _ ## event, ## __VA_ARGS__, DT_END)
52 115
53#define INVOKE_GLOBAL(event, ...) INVOKE (GLOBAL, event, ## __VA_ARGS__) 116//TODO should index into @result
54#define INVOKE_OBJECT(event, op, ...) INVOKE (OBJECT, event, ARG_OBJECT (op), ## __VA_ARGS__) 117#define RESULT(idx,type) cfperl_result_ ## type (idx)
55#define INVOKE_PLAYER(event, pl, ...) INVOKE (PLAYER, event, ARG_PLAYER (pl), ## __VA_ARGS__) 118#define RESULT_DOUBLE(idx) RESULT(idx, DOUBLE)
56#define INVOKE_MAP(event, map, ...) INVOKE (MAP , event, ARG_MAP (map) , ## __VA_ARGS__) 119#define RESULT_INT(idx) RESULT(idx, INT)
57 120
58int cfperl_invoke (event_type event, ...); 121double cfperl_result_DOUBLE (int idx);
59void cfperl_free_ob (object *op); 122int cfperl_result_INT (int idx);
60 123
61void cfperl_init (); 124//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
62void cfperl_main ();
63 125
126INTERFACE_CLASS (attachable)
127struct attachable
128{
129 static MGVTBL vtbl;
130
131 static unordered_vector<attachable *> mortals;
132 MTH static void check_mortals ();
133
134 enum {
135 F_DESTROYED = 0x01,
136 F_DEBUG_TRACE = 0x02,
137 };
138
139 // object is delete'd after the refcount reaches 0
140 mutable int ACC (RW, refcnt);
141 int ACC (RW, flags);
142
143 MTH void refcnt_inc () const { ++refcnt; }
144 MTH void refcnt_dec () const { --refcnt; }
145
146 MTH int refcnt_cnt () const;
147 // check wether the object has died and destroy
148 MTH void refcnt_chk () { if (refcnt <= 0) do_check (); }
149
150 // destroy the object unless it was already destroyed
151 // this politely asks everybody interested the reduce
152 // the refcount to 0 as soon as possible.
153 MTH void destroy ();
154
155 // return wether an object was destroyed already
156 MTH bool destroyed () const { return flags & F_DESTROYED; }
157
158 virtual void gather_callbacks (AV *&callbacks, event_type event) const;
159
160#if 0
161private:
162 static refcounted *rc_first;
163 refcounted *rc_next;
64#endif 164#endif
65 165
166 HV *self; // CF+ perl self
167 AV *cb; // CF+ callbacks
168 shstr attach; // generic extension attachment information
169
170 void sever_self (); // sever this object from its self, if it has one.
171 void optimise (); // possibly save some memory by destroying unneeded data
172
173 attachable ()
174 : flags (0), refcnt (0), self (0), cb (0), attach (0)
175 {
176 }
177
178 attachable (const attachable &src)
179 : flags (0), refcnt (0), self (0), cb (0), attach (src.attach)
180 {
181 }
182
183 virtual ~attachable ();
184
185 attachable &operator =(const attachable &src);
186
187 bool invoke (event_type event, ...);
188 MTH void instantiate ();
189 void reattach ();
190
191protected:
192 // do the real refcount checking work
193 void do_check ();
194
195 // the method that does the real destroy work
196 virtual void do_destroy ();
197};
198
199// the global object is a pseudo object that cares for the global events
200struct global : attachable
201{
202 void gather_callbacks (AV *&callbacks, event_type event) const;
203};
204
205extern struct global gbl_ev;
206
207//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
208
209struct object_freezer : dynbuf
210{
211 AV *av;
212
213 object_freezer ();
214 ~object_freezer ();
215
216 void put (attachable *ext);
217
218 // used only for user-defined key-value pairs
219 void put (const shstr &k, const shstr &v)
220 {
221 add (k);
222
223 if (v)
224 add (' '), add (v);
225
226 add ('\n');
227 }
228
229 //TODO//temporary, used only for saving body locations
230 void put (const char *k, int v)
231 {
232 add (k);
233 add (' ');
234 add (sint32 (v));
235 add ('\n');
236 }
237
238 template<typename T>
239 void put_string (keyword k, const T &v)
240 {
241 int klen = keyword_len [k];
242 int vlen = v ? strlen (v) + 1 : 0;
243
244 char *p = (char *)alloc (klen + vlen + 1);
245
246 memcpy (p, keyword_str [k], klen); p += klen;
247
248 if (v)
249 {
250 *p++ = ' '; vlen--;
251 memcpy (p, v, vlen); p += vlen;
252 }
253
254 *p = '\n';
255 }
256
257 void put (keyword k, const char *v = 0)
258 {
259 put_string (k, v);
260 }
261
262 void put (keyword k, const shstr &v)
263 {
264 put_string (k, v);
265 }
266
267 void put (keyword k, double v)
268 {
269 char buf [128];
270
271 snprintf (buf, 128, "%.7g", v);
272
273 put (k, (const char *)buf);
274 }
275
276 void put_(keyword k, sint64 v)
277 {
278 add (keyword_str [k], keyword_len [k]);
279 add (' ');
280 add (v);
281 add ('\n');
282 }
283
284 void put_(keyword k, sint32 v)
285 {
286 add (keyword_str [k], keyword_len [k]);
287 add (' ');
288 add (v);
289 add ('\n');
290 }
291
292 void put (keyword kbeg, keyword kend, const shstr &v)
293 {
294 add (keyword_str [kbeg], keyword_len [kbeg]); add ('\n');
295
296 if (v)
297 {
298 add (v);
299 add ('\n');
300 }
301
302 add (keyword_str [kend], keyword_len [kend]); add ('\n');
303 }
304
305 void put (keyword k, float v) { put (k, (double)v); }
306 void put (keyword k, signed char v) { put_(k, (sint32)v); }
307 void put (keyword k, unsigned char v) { put_(k, (sint32)v); }
308 void put (keyword k, signed short v) { put_(k, (sint32)v); }
309 void put (keyword k, unsigned short v) { put_(k, (sint32)v); }
310 void put (keyword k, signed int v) { put_(k, (sint32)v); }
311 void put (keyword k, unsigned int v) { put_(k, (sint64)v); }
312 void put (keyword k, signed long v) { put_(k, (sint64)v); }
313 void put (keyword k, unsigned long v) { put_(k, (sint64)v); }
314 void put (keyword k, signed long long v) { put_(k, (sint64)v); }
315 void put (keyword k, unsigned long long v) { put_(k, (sint64)v); }
316
317 template<typename T>
318 void put (keyword k, const T *v)
319 {
320 if (v)
321 put (k, v->name);
322 else
323 put (k, (const char *)0);
324 }
325
326 template<typename T>
327 void put (keyword k, const refptr<T> &v)
328 {
329 put (k, (T *)v);
330 }
331
332 bool save (const char *path);
333 char *as_string (); // like strdup
334
335 operator bool () { return !!av; }
336};
337
338// compatibility support, should be removed when no longer needed
339int fprintf (object_freezer &freezer, const char *format, ...);
340int fputs (const char *s, object_freezer &freezer);
341
342struct object_thawer
343{
344 SV *text; // text part
345 AV *av; // perl part
346 int linenum;
347 char *line; // current beginning of line
348 char *last_keyword, *last_value;
349 const char *name;
350
351 operator bool () { return !!text; }
352
353 object_thawer (const char *path = 0);
354 object_thawer (const char *data, AV *perlav);
355 ~object_thawer ();
356
357 void get (attachable *obj, int oid);
358
359 keyword get_kv (); // also parse value for later use
360 void skip_kv (keyword kw);
361
362 const char *get_str () { return last_value; } // may be 0
363
364 void get (shstr &sh) const;
365 void get_ornull (shstr &sh) const { sh = last_value; }
366 void get_ml (keyword kend, shstr &sh);
367
368 sint32 get_sint32 () const;
369 sint64 get_sint64 () const;
370 double get_double () const;
371
372 void get (float &v) { v = get_double (); }
373 void get (double &v) { v = get_double (); }
374
375 void get (bool &i) { i = get_sint32 (); }
376 void get (sint8 &i) { i = get_sint32 (); }
377 void get (uint8 &i) { i = get_sint32 (); }
378 void get (sint16 &i) { i = get_sint32 (); }
379 void get (uint16 &i) { i = get_sint32 (); }
380 void get (sint32 &i) { i = get_sint32 (); }
381
382 void get (uint32 &i) { i = get_sint64 (); }
383 void get (sint64 &i) { i = get_sint64 (); }
384
385 bool parse_error (keyword kw, const char *type = 0, const char *name = 0, bool skip = true);
386};
387
388//TODO: remove
389char *fgets (char *s, int n, object_thawer &thawer);
390
391//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
392
393struct coroapi {
394 static struct CoroAPI *GCoroAPI;
395
396 static int nready () { return CORO_NREADY; }
397 static int cede () { return CORO_CEDE ; }
398
399 static int cede_counter;
400
401 static void cede_every (int count)
402 {
403 if (++cede_counter >= count)
404 {
405 cede_counter = 0;
406
407 if (coroapi::nready ())
408 coroapi::cede ();
409 }
410 }
411};
412
413struct watcher_base
414{
415 static struct EventAPI *GEventAPI;
416};
417
418template<class base>
419struct watcher : watcher_base
420{
421 base *pe;
422
423 void start (bool repeat = false) { GEventAPI->start ((pe_watcher *)pe, repeat); }
424 void stop (bool cancel_events = false) { GEventAPI->stop ((pe_watcher *)pe, cancel_events); }
425 void now () { GEventAPI->now ((pe_watcher *)pe); }
426 void suspend () { GEventAPI->suspend ((pe_watcher *)pe); }
427 void resume () { GEventAPI->resume ((pe_watcher *)pe); }
428
429 void prio (int new_prio) { ((pe_watcher *)pe)->prio = new_prio; }
430
431 ~watcher ()
432 {
433 cancel ();
434 }
435
436private:
437 void cancel () { GEventAPI->cancel ((pe_watcher *)pe); } // private
438};
439
440struct iw : watcher<pe_idle>, callback<void (iw &)>
441{
442 template<class O, class M>
443 iw (O object, M method)
444 : callback<void (iw &)> (object, method)
445 {
446 alloc ();
447 }
448
449private:
450 void alloc ();
451};
452
453struct iow : watcher<pe_io>, callback<void (iow &, int)>
454{
455 template<class O, class M>
456 iow (O object, M method)
457 : callback<void (iow &, int)> (object, method)
458 {
459 alloc ();
460 }
461
462 void fd (int fd);
463 int poll ();
464 void poll (int events);
465
466private:
467 void alloc ();
468};
469
470#endif
471

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