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Comparing deliantra/server/common/utils.C (file contents):
Revision 1.47 by root, Wed Feb 7 02:04:46 2007 UTC vs.
Revision 1.86 by root, Mon Jan 12 03:40:21 2009 UTC

1/* 1/*
2 * CrossFire, A Multiplayer game for X-windows 2 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
3 * 3 *
4 * Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team 4 * Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5 * Copyright (C) 2002 Mark Wedel & Crossfire Development Team 5 * Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team
6 * Copyright (C) 1992 Frank Tore Johansen 6 * Copyright (©) 1992,2007 Frank Tore Johansen
7 * 7 *
8 * This program is free software; you can redistribute it and/or modify 8 * Deliantra is free software: you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by 9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or 10 * the Free Software Foundation, either version 3 of the License, or
11 * (at your option) any later version. 11 * (at your option) any later version.
12 * 12 *
13 * This program is distributed in the hope that it will be useful, 13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details. 16 * GNU General Public License for more details.
17 * 17 *
18 * You should have received a copy of the GNU General Public License 18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software 19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 * 20 *
22 * The authors can be reached via e-mail at <crossfire@schmorp.de> 21 * The authors can be reached via e-mail to <support@deliantra.net>
23 */ 22 */
24 23
25/* 24/*
26 * General convenience functions for crossfire. 25 * General convenience functions for crossfire.
27 */ 26 */
32#include <sys/time.h> 31#include <sys/time.h>
33#include <time.h> 32#include <time.h>
34#include <signal.h> 33#include <signal.h>
35 34
36#include <global.h> 35#include <global.h>
37#include <funcpoint.h>
38#include <material.h> 36#include <material.h>
39 37
38#include <sys/time.h>
39#include <sys/resource.h>
40
40#include <glib.h> 41#include <glib.h>
41 42
42rand_gen rndm; 43refcnt_base::refcnt_t refcnt_dummy;
44ssize_t slice_alloc;
45rand_gen rndm, rmg_rndm;
43 46
44void 47void
45tausworthe_random_generator::seed (uint32_t seed) 48tausworthe_random_generator::seed (uint32_t seed)
46{ 49{
47 state [0] = max ( 2U, seed * 69069U); 50 state [0] = seed * 69069U; if (state [0] < 2U) state [0] += 2U;
48 state [1] = max ( 8U, state [0] * 69069U); 51 state [1] = state [0] * 69069U; if (state [0] < 8U) state [0] += 8U;
49 state [2] = max ( 16U, state [1] * 69069U); 52 state [2] = state [1] * 69069U; if (state [0] < 16U) state [0] += 16U;
50 state [3] = max (128U, state [2] * 69069U); 53 state [3] = state [2] * 69069U; if (state [0] < 128U) state [0] += 128U;
51 54
52 for (int i = 11; --i; ) 55 for (int i = 11; --i; )
53 operator ()(); 56 next ();
54} 57}
55 58
56uint32_t 59uint32_t
57tausworthe_random_generator::next () 60tausworthe_random_generator::next ()
58{ 61{
62 state [3] = ((state [3] & 0xFFFFFF80U) << 13U) ^ (((state [3] << 3U) ^ state [3]) >> 12U); 65 state [3] = ((state [3] & 0xFFFFFF80U) << 13U) ^ (((state [3] << 3U) ^ state [3]) >> 12U);
63 66
64 return state [0] ^ state [1] ^ state [2] ^ state [3]; 67 return state [0] ^ state [1] ^ state [2] ^ state [3];
65} 68}
66 69
70template<class generator>
67uint32_t 71uint32_t
68tausworthe_random_generator::get_range (uint32_t r_max) 72random_number_generator<generator>::get_range (uint32_t num)
69{ 73{
70 return next () % r_max; 74 return (this->next () * (uint64_t)num) >> 32U;
71} 75}
72 76
73// return a number within (min .. max) 77// return a number within (min .. max)
78template<class generator>
74int 79int
75tausworthe_random_generator::get_range (int r_min, int r_max) 80random_number_generator<generator>::get_range (int r_min, int r_max)
76{ 81{
77 return r_min + (*this) (max (r_max - r_min + 1, 1)); 82 return r_min + get_range (max (r_max - r_min + 1, 0));
78} 83}
84
85template struct random_number_generator<tausworthe_random_generator>;
86template struct random_number_generator<xorshift_random_generator>;
79 87
80/* 88/*
81 * The random functions here take luck into account when rolling random 89 * The random functions here take luck into account when rolling random
82 * dice or numbers. This function has less of an impact the larger the 90 * dice or numbers. This function has less of an impact the larger the
83 * difference becomes in the random numbers. IE, the effect is lessened 91 * difference becomes in the random numbers. IE, the effect is lessened
93 * not the recipient (ie, the poor slob getting hit). [garbled 20010916] 101 * not the recipient (ie, the poor slob getting hit). [garbled 20010916]
94 */ 102 */
95int 103int
96random_roll (int r_min, int r_max, const object *op, int goodbad) 104random_roll (int r_min, int r_max, const object *op, int goodbad)
97{ 105{
106 r_max = max (r_min, r_max);
107
98 int base = r_max - r_min > 1 ? 20 : 50; /* d2 and d3 are corner cases */ 108 int base = r_max - r_min > 1 ? 20 : 50; /* d2 and d3 are corner cases */
99
100 if (r_max < 1 || r_max < r_min)
101 {
102 LOG (llevError, "Calling random_roll with min=%d max=%d\n", r_min, r_max);
103 return r_min;
104 }
105 109
106 if (op->type == PLAYER) 110 if (op->type == PLAYER)
107 { 111 {
108 int luck = op->stats.luck; 112 int luck = op->stats.luck;
109 113
119/* 123/*
120 * This is a 64 bit version of random_roll above. This is needed 124 * This is a 64 bit version of random_roll above. This is needed
121 * for exp loss calculations for players changing religions. 125 * for exp loss calculations for players changing religions.
122 */ 126 */
123sint64 127sint64
124random_roll64 (sint64 min, sint64 max, const object *op, int goodbad) 128random_roll64 (sint64 r_min, sint64 r_max, const object *op, int goodbad)
125{ 129{
126 sint64 omin, diff, luck, ran; 130 sint64 omin = r_min;
127 int base; 131 sint64 range = max (0, r_max - r_min + 1);
128 132 int base = range > 2 ? 20 : 50; /* d2 and d3 are corner cases */
129 omin = min;
130 diff = max - min + 1;
131 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */
132
133 if (max < 1 || diff < 1)
134 {
135 LOG (llevError, "Calling random_roll with min=%" PRId64 " max=%" PRId64 "\n", min, max);
136 return (min); /* avoids a float exception */
137 }
138 133
139 /* 134 /*
140 * Make a call to get two 32 bit unsigned random numbers, and just to 135 * Make a call to get two 32 bit unsigned random numbers, and just to
141 * a little bitshifting. 136 * a little bitshifting.
142 */ 137 */
143 ran = (sint64) rndm.next () ^ ((sint64) rndm.next () << 31); 138 sint64 ran = (sint64) rndm.next () ^ ((sint64) rndm.next () << 31);
144 139
145 if (op->type != PLAYER) 140 if (op->type != PLAYER)
146 return ((ran % diff) + min); 141 return ((ran % range) + r_min);
147 142
148 luck = op->stats.luck; 143 int luck = op->stats.luck;
144
149 if (rndm (base) < MIN (10, abs (luck))) 145 if (rndm (base) < min (10, abs (luck)))
150 { 146 {
151 /* we have a winner */ 147 /* we have a winner */
152 ((luck > 0) ? (luck = 1) : (luck = -1)); 148 ((luck > 0) ? (luck = 1) : (luck = -1));
153 diff -= luck; 149 range -= luck;
154 if (diff < 1) 150 if (range < 1)
155 return (omin); /*check again */ 151 return (omin); /*check again */
152
156 ((goodbad) ? (min += luck) : (diff)); 153 ((goodbad) ? (r_min += luck) : (range));
157 154
158 return (MAX (omin, MIN (max, (ran % diff) + min))); 155 return (max (omin, min (r_max, (ran % range) + r_min)));
159 } 156 }
160 157
161 return ((ran % diff) + min); 158 return ran % range + r_min;
162} 159}
163 160
164/* 161/*
165 * Roll a number of dice (2d3, 4d6). Uses op to determine luck, 162 * Roll a number of dice (2d3, 4d6). Uses op to determine luck,
166 * If goodbad is non-zero, luck increases the roll, if zero, it decreases. 163 * If goodbad is non-zero, luck increases the roll, if zero, it decreases.
167 * Generally, op should be the player/caster/hitter requesting the roll, 164 * Generally, op should be the player/caster/hitter requesting the roll,
168 * not the recipient (ie, the poor slob getting hit). 165 * not the recipient (ie, the poor slob getting hit).
169 * The args are num D size (ie 4d6) [garbled 20010916] 166 * The args are num D size (ie 4d6) [garbled 20010916]
170 */ 167 */
171
172int 168int
173die_roll (int num, int size, const object *op, int goodbad) 169die_roll (int num, int size, const object *op, int goodbad)
174{ 170{
175 int min, diff, luck, total, i, gotlucky, base; 171 int min, luck, total, i, gotlucky;
176 172
177 diff = size; 173 int diff = size;
178 min = 1; 174 min = 1;
179 luck = total = gotlucky = 0; 175 luck = total = gotlucky = 0;
180 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */ 176 int base = diff > 2 ? 20 : 50; /* d2 and d3 are corner cases */
177
181 if (size < 2 || diff < 1) 178 if (size < 2 || diff < 1)
182 { 179 {
183 LOG (llevError, "Calling die_roll with num=%d size=%d\n", num, size); 180 LOG (llevError, "Calling die_roll with num=%d size=%d\n", num, size);
184 return (num); /* avoids a float exception */ 181 return num; /* avoids a float exception */
185 } 182 }
186 183
187 if (op->type == PLAYER) 184 if (op->type == PLAYER)
188 luck = op->stats.luck; 185 luck = op->stats.luck;
189 186
205 } 202 }
206 203
207 return total; 204 return total;
208} 205}
209 206
210/* decay and destroy perishable items in a map */
211void
212maptile::decay_objects ()
213{
214 if (!spaces)
215 return;
216
217 for (mapspace *ms = spaces + size (); ms-- > spaces; )
218 for (object *above, *op = ms->bot; op; op = above)
219 {
220 above = op->above;
221
222 bool destroy = 0;
223
224 // do not decay anything above unique floor tiles (yet :)
225 if (QUERY_FLAG (op, FLAG_IS_FLOOR) && QUERY_FLAG (op, FLAG_UNIQUE))
226 break;
227
228 if (QUERY_FLAG (op, FLAG_IS_FLOOR)
229 || QUERY_FLAG (op, FLAG_OBJ_ORIGINAL)
230 || QUERY_FLAG (op, FLAG_OBJ_SAVE_ON_OVL)
231 || QUERY_FLAG (op, FLAG_UNIQUE)
232 || QUERY_FLAG (op, FLAG_OVERLAY_FLOOR)
233 || QUERY_FLAG (op, FLAG_UNPAID)
234 || op->is_alive ())
235 ; // do not decay
236 else if (op->is_weapon ())
237 {
238 op->stats.dam--;
239 if (op->stats.dam < 0)
240 destroy = 1;
241 }
242 else if (op->is_armor ())
243 {
244 op->stats.ac--;
245 if (op->stats.ac < 0)
246 destroy = 1;
247 }
248 else if (op->type == FOOD)
249 {
250 op->stats.food -= rndm (5, 20);
251 if (op->stats.food < 0)
252 destroy = 1;
253 }
254 else
255 {
256 int mat = op->materials;
257
258 if (mat & M_PAPER
259 || mat & M_LEATHER
260 || mat & M_WOOD
261 || mat & M_ORGANIC
262 || mat & M_CLOTH
263 || mat & M_LIQUID
264 || (mat & M_IRON && rndm (1, 5) == 1)
265 || (mat & M_GLASS && rndm (1, 2) == 1)
266 || ((mat & M_STONE || mat & M_ADAMANT) && rndm (1, 10) == 1)
267 || ((mat & M_SOFT_METAL || mat & M_BONE) && rndm (1, 3) == 1)
268 || (mat & M_ICE && temp > 32))
269 destroy = 1;
270 }
271
272 /* adjust overall chance below */
273 if (destroy && rndm (0, 1))
274 op->destroy ();
275 }
276}
277
278/* convert materialname to materialtype_t */ 207/* convert materialname to materialtype_t */
279 208
280materialtype_t * 209materialtype_t *
281name_to_material (const shstr &name) 210name_to_material (const shstr_cmp name)
282{ 211{
283 for (materialtype_t *mt = materialt; mt && mt->next; mt = mt->next) 212 for (materialtype_t *mt = materialt; mt; mt = mt->next)
284 if (name == mt->name) 213 if (name == mt->name)
285 return mt; 214 return mt;
286 215
287 return materialt; 216 return 0;
288} 217}
289 218
290/* when doing transmutation of objects, we have to recheck the resistances, 219/* when doing transmutation of objects, we have to recheck the resistances,
291 * as some that did not apply previously, may apply now. 220 * as some that did not apply previously, may apply now.
292 */ 221 */
293
294void 222void
295transmute_materialname (object *op, const object *change) 223transmute_materialname (object *op, const object *change)
296{ 224{
297 materialtype_t *mt; 225 materialtype_t *mt;
298 int j; 226 int j;
299 227
300 if (op->materialname == NULL) 228 if (!op->materialname)
301 return; 229 return;
302 230
303 if (change->materialname != NULL && strcmp (op->materialname, change->materialname)) 231 if (op->materialname != change->materialname)
304 return; 232 return;
305 233
306 if (!op->is_armor ()) 234 if (!op->is_armor ())
307 return; 235 return;
308 236
309 mt = name_to_material (op->materialname); 237 mt = name_to_material (op->materialname);
310 if (!mt) 238 if (!mt)
311 { 239 {
312 LOG (llevError, "archetype '%s>%s' uses nonexistent material '%s'\n", &op->arch->name, &op->name, &op->materialname); 240 LOG (llevError, "archetype '%s>%s' uses nonexistent material '%s'\n", &op->arch->archname, &op->name, &op->materialname);
313 return; 241 return;
314 } 242 }
315 243
316 for (j = 0; j < NROFATTACKS; j++) 244 for (j = 0; j < NROFATTACKS; j++)
317 if (op->resist[j] == 0 && change->resist[j] != 0) 245 if (op->resist[j] == 0 && change->resist[j] != 0)
328void 256void
329set_materialname (object *op, int difficulty, materialtype_t *nmt) 257set_materialname (object *op, int difficulty, materialtype_t *nmt)
330{ 258{
331 materialtype_t *mt, *lmt; 259 materialtype_t *mt, *lmt;
332 260
333#ifdef NEW_MATERIAL_CODE
334 int j;
335#endif
336
337 if (op->materialname != NULL) 261 if (!op->materialname)
338 return; 262 return;
339 263
340 264 if (nmt)
341 265 lmt = nmt;
342 if (nmt == NULL) 266 else
343 { 267 {
344 lmt = NULL; 268 lmt = 0;
345#ifndef NEW_MATERIAL_CODE 269
346 for (mt = materialt; mt && mt->next; mt = mt->next) 270 for (mt = materialt; mt; mt = mt->next)
347 { 271 if (op->materials & mt->material && rndm (1, 100) <= mt->chance &&
348 if (op->materials & mt->material) 272 difficulty >= mt->difficulty && (op->magic >= mt->magic || mt->magic == 0))
349 { 273 {
350 lmt = mt; 274 lmt = mt;
275 if (!(op->is_weapon () || op->is_armor ()))
351 break; 276 break;
352 } 277 }
353 }
354
355#else
356 for (mt = materialt; mt && mt->next; mt = mt->next)
357 {
358 if (op->materials & mt->material && rndm (1, 100) <= mt->chance &&
359 difficulty >= mt->difficulty && (op->magic >= mt->magic || mt->magic == 0))
360 {
361 lmt = mt;
362 if (!(op->is_weapon () || op->is_armor ()))
363 break;
364 }
365 }
366#endif
367 }
368 else
369 { 278 }
370 lmt = nmt; 279
280 if (lmt)
371 } 281 {
372
373 if (lmt != NULL)
374 {
375#ifndef NEW_MATERIAL_CODE
376 op->materialname = lmt->name;
377 return;
378#else
379
380 if (op->stats.dam && op->is_weapon ()) 282 if (op->stats.dam && op->is_weapon ())
381 { 283 {
382 op->stats.dam += lmt->damage; 284 op->stats.dam += lmt->damage;
383 if (op->stats.dam < 1) 285 if (op->stats.dam < 1)
384 op->stats.dam = 1; 286 op->stats.dam = 1;
390 op->stats.wc += lmt->wc; 292 op->stats.wc += lmt->wc;
391 if (op->is_armor ()) 293 if (op->is_armor ())
392 { 294 {
393 if (op->stats.ac) 295 if (op->stats.ac)
394 op->stats.ac += lmt->ac; 296 op->stats.ac += lmt->ac;
297
395 for (j = 0; j < NROFATTACKS; j++) 298 for (int j = 0; j < NROFATTACKS; j++)
396 if (op->resist[j] != 0) 299 if (op->resist[j] != 0)
397 { 300 {
398 op->resist[j] += lmt->mod[j]; 301 op->resist[j] += lmt->mod[j];
399 if (op->resist[j] > 100) 302 if (op->resist[j] > 100)
400 op->resist[j] = 100; 303 op->resist[j] = 100;
401 if (op->resist[j] < -100) 304 if (op->resist[j] < -100)
402 op->resist[j] = -100; 305 op->resist[j] = -100;
403 } 306 }
404 } 307 }
308
405 op->materialname = lmt->name; 309 op->materialname = lmt->name;
406 /* dont make it unstackable if it doesn't need to be */ 310 /* dont make it unstackable if it doesn't need to be */
407 if (op->is_weapon () || op->is_armor ()) 311 if (op->is_weapon () || op->is_armor ())
408 { 312 {
409 op->weight = (op->weight * lmt->weight) / 100; 313 op->weight = (op->weight * lmt->weight) / 100;
410 op->value = (op->value * lmt->value) / 100; 314 op->value = (op->value * lmt->value) / 100;
411 } 315 }
412#endif
413 } 316 }
414} 317}
415 318
416/* 319/*
417 * Strip out the media tags from a String. 320 * Strip out the media tags from a String.
512 * a 'list' for the purposes here, is a string of items, seperated by commas, except 415 * a 'list' for the purposes here, is a string of items, seperated by commas, except
513 * for the last entry, which has an 'and' before it, and a full stop (period) after it. 416 * for the last entry, which has an 'and' before it, and a full stop (period) after it.
514 * This function will also strip all trailing non alphanumeric characters. 417 * This function will also strip all trailing non alphanumeric characters.
515 * It does not insert an oxford comma. 418 * It does not insert an oxford comma.
516 */ 419 */
517
518void 420void
519make_list_like (char *input) 421make_list_like (char *input)
520{ 422{
521 char *p, tmp[MAX_BUF]; 423 char *p, tmp[MAX_BUF];
522 int i; 424 int i;
552void 454void
553fork_abort (const char *msg) 455fork_abort (const char *msg)
554{ 456{
555 if (!fork ()) 457 if (!fork ())
556 { 458 {
459 signal (SIGINT , SIG_IGN);
460 signal (SIGTERM, SIG_IGN);
557 signal (SIGABRT, SIG_DFL); 461 signal (SIGABRT, SIG_IGN);
462
463 signal (SIGSEGV, SIG_DFL);
464 signal (SIGBUS , SIG_DFL);
465 signal (SIGILL , SIG_DFL);
466 signal (SIGTRAP, SIG_DFL);
467
468 // try to put corefiles into a subdirectory, if existing, to allow
469 // an administrator to reduce the I/O load.
470 chdir ("cores");
471
472 // try to detach us from as many external dependencies as possible
473 // as coredumping can take time by closing all fd's.
474 {
475 struct rlimit lim;
476
477 if (getrlimit (RLIMIT_NOFILE, &lim))
478 lim.rlim_cur = 1024;
479
480 for (int i = 0; i < lim.rlim_cur; ++i)
481 close (i);
482 }
483
484 {
485 sigset_t empty;
486 sigemptyset (&empty);
487 sigprocmask (SIG_SETMASK, &empty, 0);
488 }
489
490 // try to coredump with SIGTRAP
491 kill (getpid (), SIGTRAP);
558 abort (); 492 abort ();
559 } 493 }
560 494
561 LOG (llevError, "fork abort: %s\n", msg); 495 LOG (llevError, "fork abort: %s\n", msg);
562} 496}
563 497
564void *salloc_ (int n) throw (std::bad_alloc) 498void *salloc_ (int n) throw (std::bad_alloc)
565{ 499{
566#ifdef PREFER_MALLOC
567 void *ptr = malloc (n);
568#else
569 void *ptr = g_slice_alloc (n); 500 void *ptr = g_slice_alloc (n);
570#endif
571 501
572 if (!ptr) 502 if (!ptr)
573 throw std::bad_alloc (); 503 throw std::bad_alloc ();
574 504
505 slice_alloc += n;
575 return ptr; 506 return ptr;
576} 507}
577 508
578void *salloc_ (int n, void *src) throw (std::bad_alloc) 509void *salloc_ (int n, void *src) throw (std::bad_alloc)
579{ 510{
585 memset (ptr, 0, n); 516 memset (ptr, 0, n);
586 517
587 return ptr; 518 return ptr;
588} 519}
589 520
521/******************************************************************************/
522
523#if DEBUG_SALLOC
524
525#define MAGIC 0xa1b2c35543deadLL
526
527void *g_slice_alloc (unsigned long size)
528{
529 unsigned long *p = (unsigned long *) (g_slice_alloc)(size + sizeof (unsigned long));
530 *p++ = size ^ MAGIC;
531 //fprintf (stderr, "g_slice_alloc %ld %p\n", size, p);//D
532 return (void *)p;
533}
534
535void *g_slice_alloc0 (unsigned long size)
536{
537 return memset (g_slice_alloc (size), 0, size);
538}
539
540void g_slice_free1 (unsigned long size, void *ptr)
541{
542 //fprintf (stderr, "g_slice_free %ld %p\n", size, ptr);//D
543 if (expect_true (ptr))
544 {
545 unsigned long *p = (unsigned long *)ptr;
546 unsigned long s = *--p ^ MAGIC;
547
548 if (size != (unsigned long)(*p ^ MAGIC))
549 {
550 LOG (logBacktrace | llevError, "slice free size (%lx) doesn't match alloc size (%lx)\n", size, s);
551 abort ();
552 }
553
554 *p = MAGIC;
555
556 (g_slice_free1)(s + sizeof (unsigned long), p);
557 }
558}
559
560#endif
561
562/******************************************************************************/
563
564int
590void assign (char *dst, const char *src, int maxlen) 565assign (char *dst, const char *src, int maxsize)
591{ 566{
592 if (!src) 567 if (!src)
593 src = ""; 568 src = "";
594 569
595 int len = strlen (src); 570 int len = strlen (src);
596 571
597 if (len >= maxlen - 1) 572 if (len >= maxsize)
598 { 573 {
599 if (maxlen <= 4) 574 if (maxsize <= 4)
600 { 575 {
601 memset (dst, '.', maxlen - 1); 576 memset (dst, '.', maxsize - 2);
602 dst [maxlen - 1] = 0; 577 dst [maxsize - 1] = 0;
603 } 578 }
604 else 579 else
605 { 580 {
606 memcpy (dst, src, maxlen - 4); 581 memcpy (dst, src, maxsize - 4);
607 memcpy (dst + maxlen - 4, "...", 4); 582 memcpy (dst + maxsize - 4, "...", 4);
608 } 583 }
584
585 len = maxsize;
609 } 586 }
610 else 587 else
611 memcpy (dst, src, len + 1); 588 memcpy (dst, src, ++len);
589
590 return len;
591}
592
593const char *
594format (const char *format, ...)
595{
596 static dynbuf_text buf;
597
598 buf.clear ();
599
600 va_list ap;
601 va_start (ap, format);
602 buf.vprintf (format, ap);
603 va_end (ap);
604
605 return buf;
612} 606}
613 607
614tstamp now () 608tstamp now ()
615{ 609{
616 struct timeval tv; 610 struct timeval tv;
627 621
628 int diff = (b - a) & 7; 622 int diff = (b - a) & 7;
629 return diff <= 1 || diff >= 7; 623 return diff <= 1 || diff >= 7;
630} 624}
631 625
626/* crc32 0xdebb20e3 table and supplementary functions. */
627extern const uint32_t crc_32_tab[256] =
628{
629 0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,
630 0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,
631 0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,
632 0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,
633 0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,
634 0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,
635 0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,
636 0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,
637 0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,
638 0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,
639 0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,
640 0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,
641 0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,
642 0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,
643 0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,
644 0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,
645 0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,
646 0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,
647 0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,
648 0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,
649 0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,
650 0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,
651 0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,
652 0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,
653 0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,
654 0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,
655 0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,
656 0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,
657 0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,
658 0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,
659 0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,
660 0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,
661 0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,
662 0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,
663 0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,
664 0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,
665 0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,
666 0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,
667 0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,
668 0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,
669 0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,
670 0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,
671 0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,
672 0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,
673 0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,
674 0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,
675 0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,
676 0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,
677 0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,
678 0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,
679 0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,
680 0x2d02ef8dL
681};
682
683void thread::start (void *(*start_routine)(void *), void *arg)
684{
685 pthread_attr_t attr;
686
687 pthread_attr_init (&attr);
688 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
689 pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN < sizeof (long) * 4096
690 ? sizeof (long) * 4096 : PTHREAD_STACK_MIN);
691#ifdef PTHREAD_SCOPE_PROCESS
692 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
693#endif
694
695 sigset_t fullsigset, oldsigset;
696 sigfillset (&fullsigset);
697
698 pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
699
700 if (pthread_create (&id, &attr, start_routine, arg))
701 cleanup ("unable to create a new thread");
702
703 pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
704}
705

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