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Comparing deliantra/server/include/util.h (file contents):
Revision 1.50 by root, Sun Jun 24 00:33:54 2007 UTC vs.
Revision 1.56 by root, Sun Sep 9 06:25:46 2007 UTC

1/* 1/*
2 * This file is part of Crossfire TRT, the Multiplayer Online Role Playing Game. 2 * This file is part of Crossfire TRT, the Roguelike Realtime MORPG.
3 * 3 *
4 * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team 4 * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team
5 * 5 *
6 * Crossfire TRT is free software; you can redistribute it and/or modify it 6 * Crossfire TRT is free software: you can redistribute it and/or modify
7 * under the terms of the GNU General Public License as published by the Free 7 * it under the terms of the GNU General Public License as published by
8 * Software Foundation; either version 2 of the License, or (at your option) 8 * the Free Software Foundation, either version 3 of the License, or
9 * any later version. 9 * (at your option) any later version.
10 * 10 *
11 * This program is distributed in the hope that it will be useful, but 11 * This program is distributed in the hope that it will be useful,
12 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * for more details. 14 * GNU General Public License for more details.
15 * 15 *
16 * You should have received a copy of the GNU General Public License along 16 * You should have received a copy of the GNU General Public License
17 * with Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51 17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 * 18 *
20 * The authors can be reached via e-mail to <crossfire@schmorp.de> 19 * The authors can be reached via e-mail to <crossfire@schmorp.de>
21 */ 20 */
22 21
23#ifndef UTIL_H__ 22#ifndef UTIL_H__
… …
334 333
335typedef tausworthe_random_generator rand_gen; 334typedef tausworthe_random_generator rand_gen;
336 335
337extern rand_gen rndm; 336extern rand_gen rndm;
338 337
338INTERFACE_CLASS (attachable)
339struct refcnt_base
340{
341 typedef int refcnt_t;
342 mutable refcnt_t ACC (RW, refcnt);
343
344 MTH void refcnt_inc () const { ++refcnt; }
345 MTH void refcnt_dec () const { --refcnt; }
346
347 refcnt_base () : refcnt (0) { }
348};
349
350// to avoid branches with more advanced compilers
351extern refcnt_base::refcnt_t refcnt_dummy;
352
339template<class T> 353template<class T>
340struct refptr 354struct refptr
341{ 355{
356 // p if not null
357 refcnt_base::refcnt_t *refcnt_ref () { return p ? &p->refcnt : &refcnt_dummy; }
358
359 void refcnt_dec ()
360 {
361 if (!is_constant (p))
362 --*refcnt_ref ();
363 else if (p)
364 --p->refcnt;
365 }
366
367 void refcnt_inc ()
368 {
369 if (!is_constant (p))
370 ++*refcnt_ref ();
371 else if (p)
372 ++p->refcnt;
373 }
374
342 T *p; 375 T *p;
343 376
344 refptr () : p(0) { } 377 refptr () : p(0) { }
345 refptr (const refptr<T> &p) : p(p.p) { if (p) p->refcnt_inc (); } 378 refptr (const refptr<T> &p) : p(p.p) { refcnt_inc (); }
346 refptr (T *p) : p(p) { if (p) p->refcnt_inc (); } 379 refptr (T *p) : p(p) { refcnt_inc (); }
347 ~refptr () { if (p) p->refcnt_dec (); } 380 ~refptr () { refcnt_dec (); }
348 381
349 const refptr<T> &operator =(T *o) 382 const refptr<T> &operator =(T *o)
350 { 383 {
384 // if decrementing ever destroys we need to reverse the order here
351 if (p) p->refcnt_dec (); 385 refcnt_dec ();
352 p = o; 386 p = o;
353 if (p) p->refcnt_inc (); 387 refcnt_inc ();
354
355 return *this; 388 return *this;
356 } 389 }
357 390
358 const refptr<T> &operator =(const refptr<T> o) 391 const refptr<T> &operator =(const refptr<T> &o)
359 { 392 {
360 *this = o.p; 393 *this = o.p;
361 return *this; 394 return *this;
362 } 395 }
363 396
364 T &operator * () const { return *p; } 397 T &operator * () const { return *p; }
365 T *operator ->() const { return p; } 398 T *operator ->() const { return p; }
366 399
367 operator T *() const { return p; } 400 operator T *() const { return p; }
368}; 401};
369 402
370typedef refptr<maptile> maptile_ptr; 403typedef refptr<maptile> maptile_ptr;
… …
406 return !strcmp (a, b); 439 return !strcmp (a, b);
407 } 440 }
408}; 441};
409 442
410// Mostly the same as std::vector, but insert/erase can reorder 443// Mostly the same as std::vector, but insert/erase can reorder
411// the elements, making insret/remove O(1) instead of O(n). 444// the elements, making append(=insert)/remove O(1) instead of O(n).
412// 445//
413// NOTE: only some forms of erase/insert are available 446// NOTE: only some forms of erase are available
414template<class T> 447template<class T>
415struct unordered_vector : std::vector<T, slice_allocator<T> > 448struct unordered_vector : std::vector<T, slice_allocator<T> >
416{ 449{
417 typedef typename unordered_vector::iterator iterator; 450 typedef typename unordered_vector::iterator iterator;
418 451
… …
459 return obj->*indexmember 492 return obj->*indexmember
460 ? this->begin () + obj->*indexmember - 1 493 ? this->begin () + obj->*indexmember - 1
461 : this->end (); 494 : this->end ();
462 } 495 }
463 496
497 void push_back (T *obj)
498 {
499 std::vector<T *, slice_allocator<T *> >::push_back (obj);
500 obj->*indexmember = this->size ();
501 }
502
464 void insert (T *obj) 503 void insert (T *obj)
465 { 504 {
466 push_back (obj); 505 push_back (obj);
467 obj->*indexmember = this->size ();
468 } 506 }
469 507
470 void insert (T &obj) 508 void insert (T &obj)
471 { 509 {
472 insert (&obj); 510 insert (&obj);
… …
507// return current time as timestampe 545// return current time as timestampe
508tstamp now (); 546tstamp now ();
509 547
510int similar_direction (int a, int b); 548int similar_direction (int a, int b);
511 549
512// like printf, but returns a std::string 550// like sprintf, but returns a "static" buffer
513const std::string format (const char *format, ...); 551const char *format (const char *format, ...);
514 552
515#endif 553#endif
516 554

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