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Comparing deliantra/server/common/utils.C (file contents):
Revision 1.42 by root, Fri Jan 19 15:15:49 2007 UTC vs.
Revision 1.82 by root, Thu Sep 11 12:43:17 2008 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 ( 2, seed * 69069U); 50 state [0] = seed * 69069U; if (state [0] < 2U) state [0] += 2U;
48 state [1] = max ( 8, state [0] * 69069U); 51 state [1] = state [0] * 69069U; if (state [0] < 8U) state [0] += 8U;
49 state [2] = max ( 16, state [1] * 69069U); 52 state [2] = state [1] * 69069U; if (state [0] < 16U) state [0] += 16U;
50 state [3] = max (128, 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 operator ()();
54} 57}
55 58
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
67uint32_t 70uint32_t
68tausworthe_random_generator::get_range (uint32_t r_max) 71tausworthe_random_generator::get_range (uint32_t num)
69{ 72{
70 return next () % r_max; 73 return (next () * (uint64_t)num) >> 32U;
71} 74}
72 75
73// return a number within (min .. max) 76// return a number within (min .. max)
74int 77int
75tausworthe_random_generator::get_range (int r_min, int r_max) 78tausworthe_random_generator::get_range (int r_min, int r_max)
76{ 79{
77 return r_min + (*this) (max (r_max - r_min + 1, 1)); 80 return r_min + get_range (max (r_max - r_min + 1, 0));
78} 81}
79 82
80/* 83/*
81 * The random functions here take luck into account when rolling random 84 * 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 85 * dice or numbers. This function has less of an impact the larger the
93 * not the recipient (ie, the poor slob getting hit). [garbled 20010916] 96 * not the recipient (ie, the poor slob getting hit). [garbled 20010916]
94 */ 97 */
95int 98int
96random_roll (int r_min, int r_max, const object *op, int goodbad) 99random_roll (int r_min, int r_max, const object *op, int goodbad)
97{ 100{
101 r_max = max (r_min, r_max);
102
98 int base = r_max - r_min > 1 ? 20 : 50; /* d2 and d3 are corner cases */ 103 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 }
105 104
106 if (op->type == PLAYER) 105 if (op->type == PLAYER)
107 { 106 {
108 int luck = op->stats.luck; 107 int luck = op->stats.luck;
109 108
118 117
119/* 118/*
120 * This is a 64 bit version of random_roll above. This is needed 119 * This is a 64 bit version of random_roll above. This is needed
121 * for exp loss calculations for players changing religions. 120 * for exp loss calculations for players changing religions.
122 */ 121 */
123
124sint64 122sint64
125random_roll64 (sint64 min, sint64 max, const object *op, int goodbad) 123random_roll64 (sint64 r_min, sint64 r_max, const object *op, int goodbad)
126{ 124{
127 sint64 omin, diff, luck, ran; 125 sint64 omin = r_min;
128 int base; 126 sint64 range = max (0, r_max - r_min + 1);
127 int base = range > 2 ? 20 : 50; /* d2 and d3 are corner cases */
129 128
130 omin = min; 129 /*
131 diff = max - min + 1;
132 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */
133
134 if (max < 1 || diff < 1)
135 {
136 LOG (llevError, "Calling random_roll with min=%" PRId64 " max=%" PRId64 "\n", min, max);
137 return (min); /* avoids a float exception */
138 }
139
140 /* Don't know of a portable call to get 64 bit random values.
141 * So make a call to get two 32 bit random numbers, and just to 130 * Make a call to get two 32 bit unsigned random numbers, and just to
142 * a little byteshifting. Do make sure the first one is only 131 * a little bitshifting.
143 * 32 bit, so we don't get skewed results
144 */ 132 */
145 ran = (RANDOM () & 0xffffffff) | ((sint64) RANDOM () << 32); 133 sint64 ran = (sint64) rndm.next () ^ ((sint64) rndm.next () << 31);
146 134
147 if (op->type != PLAYER) 135 if (op->type != PLAYER)
148 return ((ran % diff) + min); 136 return ((ran % range) + r_min);
149 137
150 luck = op->stats.luck; 138 int luck = op->stats.luck;
139
151 if (RANDOM () % base < MIN (10, abs (luck))) 140 if (rndm (base) < min (10, abs (luck)))
152 { 141 {
153 /* we have a winner */ 142 /* we have a winner */
154 ((luck > 0) ? (luck = 1) : (luck = -1)); 143 ((luck > 0) ? (luck = 1) : (luck = -1));
155 diff -= luck; 144 range -= luck;
156 if (diff < 1) 145 if (range < 1)
157 return (omin); /*check again */ 146 return (omin); /*check again */
147
158 ((goodbad) ? (min += luck) : (diff)); 148 ((goodbad) ? (r_min += luck) : (range));
159 149
160 return (MAX (omin, MIN (max, (ran % diff) + min))); 150 return (max (omin, min (r_max, (ran % range) + r_min)));
161 } 151 }
162 return ((ran % diff) + min); 152
153 return ran % range + r_min;
163} 154}
164 155
165/* 156/*
166 * Roll a number of dice (2d3, 4d6). Uses op to determine luck, 157 * Roll a number of dice (2d3, 4d6). Uses op to determine luck,
167 * If goodbad is non-zero, luck increases the roll, if zero, it decreases. 158 * If goodbad is non-zero, luck increases the roll, if zero, it decreases.
168 * Generally, op should be the player/caster/hitter requesting the roll, 159 * Generally, op should be the player/caster/hitter requesting the roll,
169 * not the recipient (ie, the poor slob getting hit). 160 * not the recipient (ie, the poor slob getting hit).
170 * The args are num D size (ie 4d6) [garbled 20010916] 161 * The args are num D size (ie 4d6) [garbled 20010916]
171 */ 162 */
172
173int 163int
174die_roll (int num, int size, const object *op, int goodbad) 164die_roll (int num, int size, const object *op, int goodbad)
175{ 165{
176 int min, diff, luck, total, i, gotlucky, base, ran; 166 int min, luck, total, i, gotlucky;
177 167
178 diff = size; 168 int diff = size;
179 min = 1; 169 min = 1;
180 luck = total = gotlucky = 0; 170 luck = total = gotlucky = 0;
181 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */ 171 int base = diff > 2 ? 20 : 50; /* d2 and d3 are corner cases */
172
182 if (size < 2 || diff < 1) 173 if (size < 2 || diff < 1)
183 { 174 {
184 LOG (llevError, "Calling die_roll with num=%d size=%d\n", num, size); 175 LOG (llevError, "Calling die_roll with num=%d size=%d\n", num, size);
185 return (num); /* avoids a float exception */ 176 return num; /* avoids a float exception */
186 } 177 }
187 178
188 if (op->type == PLAYER) 179 if (op->type == PLAYER)
189 luck = op->stats.luck; 180 luck = op->stats.luck;
190 181
191 for (i = 0; i < num; i++) 182 for (i = 0; i < num; i++)
192 { 183 {
193 if (RANDOM () % base < MIN (10, abs (luck)) && !gotlucky) 184 if (rndm (base) < MIN (10, abs (luck)) && !gotlucky)
194 { 185 {
195 /* we have a winner */ 186 /* we have a winner */
196 gotlucky++; 187 gotlucky++;
197 ((luck > 0) ? (luck = 1) : (luck = -1)); 188 ((luck > 0) ? (luck = 1) : (luck = -1));
198 diff -= luck; 189 diff -= luck;
199 if (diff < 1) 190 if (diff < 1)
200 return (num); /*check again */ 191 return (num); /*check again */
201 ((goodbad) ? (min += luck) : (diff)); 192 ((goodbad) ? (min += luck) : (diff));
202 ran = RANDOM ();
203 total += MAX (1, MIN (size, (ran % diff) + min)); 193 total += MAX (1, MIN (size, rndm (diff) + min));
204 } 194 }
205 else 195 else
206 {
207 total += RANDOM () % size + 1; 196 total += rndm (size) + 1;
208 }
209 } 197 }
198
210 return (total); 199 return total;
211}
212
213/* decay and destroy perishable items in a map */
214void
215maptile::decay_objects ()
216{
217 if (!spaces)
218 return;
219
220 for (mapspace *ms = spaces + size (); ms-- > spaces; )
221 for (object *above, *op = ms->bot; op; op = above)
222 {
223 above = op->above;
224
225 bool destroy = 0;
226
227 // do not decay anything above unique floor tiles (yet :)
228 if (QUERY_FLAG (op, FLAG_IS_FLOOR) && QUERY_FLAG (op, FLAG_UNIQUE))
229 break;
230
231 if (QUERY_FLAG (op, FLAG_IS_FLOOR)
232 || QUERY_FLAG (op, FLAG_OBJ_ORIGINAL)
233 || QUERY_FLAG (op, FLAG_OBJ_SAVE_ON_OVL)
234 || QUERY_FLAG (op, FLAG_UNIQUE)
235 || QUERY_FLAG (op, FLAG_OVERLAY_FLOOR)
236 || QUERY_FLAG (op, FLAG_UNPAID)
237 || op->is_alive ())
238 ; // do not decay
239 else if (op->is_weapon ())
240 {
241 op->stats.dam--;
242 if (op->stats.dam < 0)
243 destroy = 1;
244 }
245 else if (op->is_armor ())
246 {
247 op->stats.ac--;
248 if (op->stats.ac < 0)
249 destroy = 1;
250 }
251 else if (op->type == FOOD)
252 {
253 op->stats.food -= rndm (5, 20);
254 if (op->stats.food < 0)
255 destroy = 1;
256 }
257 else
258 {
259 int mat = op->material;
260
261 if (mat & M_PAPER
262 || mat & M_LEATHER
263 || mat & M_WOOD
264 || mat & M_ORGANIC
265 || mat & M_CLOTH
266 || mat & M_LIQUID
267 || (mat & M_IRON && rndm (1, 5) == 1)
268 || (mat & M_GLASS && rndm (1, 2) == 1)
269 || ((mat & M_STONE || mat & M_ADAMANT) && rndm (1, 10) == 1)
270 || ((mat & M_SOFT_METAL || mat & M_BONE) && rndm (1, 3) == 1)
271 || (mat & M_ICE && temp > 32))
272 destroy = 1;
273 }
274
275 /* adjust overall chance below */
276 if (destroy && rndm (0, 1))
277 op->destroy ();
278 }
279} 200}
280 201
281/* convert materialname to materialtype_t */ 202/* convert materialname to materialtype_t */
282 203
283materialtype_t * 204materialtype_t *
284name_to_material (const char *name) 205name_to_material (const shstr &name)
285{ 206{
286 materialtype_t *mt, *nmt; 207 for (materialtype_t *mt = materialt; mt && mt->next; mt = mt->next)
208 if (name == mt->name)
209 return mt;
287 210
288 mt = NULL;
289 for (nmt = materialt; nmt != NULL && nmt->next != NULL; nmt = nmt->next)
290 {
291 if (strcmp (name, nmt->name) == 0)
292 {
293 mt = nmt;
294 break;
295 }
296 }
297 return mt; 211 return 0;
298} 212}
299 213
300/* when doing transmutation of objects, we have to recheck the resistances, 214/* when doing transmutation of objects, we have to recheck the resistances,
301 * as some that did not apply previously, may apply now. 215 * as some that did not apply previously, may apply now.
302 */ 216 */
303
304void 217void
305transmute_materialname (object *op, const object *change) 218transmute_materialname (object *op, const object *change)
306{ 219{
307 materialtype_t *mt; 220 materialtype_t *mt;
308 int j; 221 int j;
317 return; 230 return;
318 231
319 mt = name_to_material (op->materialname); 232 mt = name_to_material (op->materialname);
320 if (!mt) 233 if (!mt)
321 { 234 {
322 LOG (llevError, "archetype '%s>%s' uses nonexistent material '%s'\n", &op->arch->name, &op->name, &op->materialname); 235 LOG (llevError, "archetype '%s>%s' uses nonexistent material '%s'\n", &op->arch->archname, &op->name, &op->materialname);
323 return; 236 return;
324 } 237 }
325 238
326 for (j = 0; j < NROFATTACKS; j++) 239 for (j = 0; j < NROFATTACKS; j++)
327 if (op->resist[j] == 0 && change->resist[j] != 0) 240 if (op->resist[j] == 0 && change->resist[j] != 0)
338void 251void
339set_materialname (object *op, int difficulty, materialtype_t *nmt) 252set_materialname (object *op, int difficulty, materialtype_t *nmt)
340{ 253{
341 materialtype_t *mt, *lmt; 254 materialtype_t *mt, *lmt;
342 255
343#ifdef NEW_MATERIAL_CODE
344 int j;
345#endif
346
347 if (op->materialname != NULL) 256 if (op->materialname != NULL)
348 return; 257 return;
349 258
350
351
352 if (nmt == NULL) 259 if (nmt == NULL)
353 { 260 {
354 lmt = NULL; 261 lmt = NULL;
355#ifndef NEW_MATERIAL_CODE 262
356 for (mt = materialt; mt != NULL && mt->next != NULL; mt = mt->next) 263 for (mt = materialt; mt && mt->next; mt = mt->next)
357 { 264 if (op->materials & mt->material && rndm (1, 100) <= mt->chance &&
358 if (op->material & mt->material) 265 difficulty >= mt->difficulty && (op->magic >= mt->magic || mt->magic == 0))
359 { 266 {
360 lmt = mt; 267 lmt = mt;
268 if (!(op->is_weapon () || op->is_armor ()))
361 break; 269 break;
362 } 270 }
363 }
364
365#else
366 for (mt = materialt; mt != NULL && mt->next != NULL; mt = mt->next)
367 {
368 if (op->material & mt->material && rndm (1, 100) <= mt->chance &&
369 difficulty >= mt->difficulty && (op->magic >= mt->magic || mt->magic == 0))
370 {
371 lmt = mt;
372 if (!(op->is_weapon () || op->is_armor ()))
373 break;
374 }
375 }
376#endif
377 } 271 }
378 else 272 else
379 {
380 lmt = nmt; 273 lmt = nmt;
381 }
382 274
383 if (lmt != NULL) 275 if (lmt != NULL)
384 { 276 {
385#ifndef NEW_MATERIAL_CODE
386 op->materialname = lmt->name;
387 return;
388#else
389
390 if (op->stats.dam && op->is_weapon ()) 277 if (op->stats.dam && op->is_weapon ())
391 { 278 {
392 op->stats.dam += lmt->damage; 279 op->stats.dam += lmt->damage;
393 if (op->stats.dam < 1) 280 if (op->stats.dam < 1)
394 op->stats.dam = 1; 281 op->stats.dam = 1;
395 } 282 }
283
396 if (op->stats.sp && op->type == BOW) 284 if (op->stats.sp && op->type == BOW)
397 op->stats.sp += lmt->sp; 285 op->stats.sp += lmt->sp;
398 if (op->stats.wc && op->is_weapon ()) 286 if (op->stats.wc && op->is_weapon ())
399 op->stats.wc += lmt->wc; 287 op->stats.wc += lmt->wc;
400 if (op->is_armor ()) 288 if (op->is_armor ())
401 { 289 {
402 if (op->stats.ac) 290 if (op->stats.ac)
403 op->stats.ac += lmt->ac; 291 op->stats.ac += lmt->ac;
292
404 for (j = 0; j < NROFATTACKS; j++) 293 for (int j = 0; j < NROFATTACKS; j++)
405 if (op->resist[j] != 0) 294 if (op->resist[j] != 0)
406 { 295 {
407 op->resist[j] += lmt->mod[j]; 296 op->resist[j] += lmt->mod[j];
408 if (op->resist[j] > 100) 297 if (op->resist[j] > 100)
409 op->resist[j] = 100; 298 op->resist[j] = 100;
410 if (op->resist[j] < -100) 299 if (op->resist[j] < -100)
411 op->resist[j] = -100; 300 op->resist[j] = -100;
412 } 301 }
413 } 302 }
303
414 op->materialname = add_string (lmt->name); 304 op->materialname = lmt->name;
415 /* dont make it unstackable if it doesn't need to be */ 305 /* dont make it unstackable if it doesn't need to be */
416 if (op->is_weapon () || op->is_armor ()) 306 if (op->is_weapon () || op->is_armor ())
417 { 307 {
418 op->weight = (op->weight * lmt->weight) / 100; 308 op->weight = (op->weight * lmt->weight) / 100;
419 op->value = (op->value * lmt->value) / 100; 309 op->value = (op->value * lmt->value) / 100;
420 } 310 }
421#endif
422 } 311 }
423} 312}
424 313
425/* 314/*
426 * Strip out the media tags from a String. 315 * Strip out the media tags from a String.
521 * a 'list' for the purposes here, is a string of items, seperated by commas, except 410 * a 'list' for the purposes here, is a string of items, seperated by commas, except
522 * for the last entry, which has an 'and' before it, and a full stop (period) after it. 411 * for the last entry, which has an 'and' before it, and a full stop (period) after it.
523 * This function will also strip all trailing non alphanumeric characters. 412 * This function will also strip all trailing non alphanumeric characters.
524 * It does not insert an oxford comma. 413 * It does not insert an oxford comma.
525 */ 414 */
526
527void 415void
528make_list_like (char *input) 416make_list_like (char *input)
529{ 417{
530 char *p, tmp[MAX_BUF]; 418 char *p, tmp[MAX_BUF];
531 int i; 419 int i;
561void 449void
562fork_abort (const char *msg) 450fork_abort (const char *msg)
563{ 451{
564 if (!fork ()) 452 if (!fork ())
565 { 453 {
454 signal (SIGINT , SIG_IGN);
455 signal (SIGTERM, SIG_IGN);
566 signal (SIGABRT, SIG_DFL); 456 signal (SIGABRT, SIG_IGN);
457
458 signal (SIGSEGV, SIG_DFL);
459 signal (SIGBUS , SIG_DFL);
460 signal (SIGILL , SIG_DFL);
461 signal (SIGTRAP, SIG_DFL);
462
463 // try to put corefiles into a subdirectory, if existing, to allow
464 // an administrator to reduce the I/O load.
465 chdir ("cores");
466
467 // try to detach us from as many external dependencies as possible
468 // as coredumping can take time by closing all fd's.
469 {
470 struct rlimit lim;
471
472 if (getrlimit (RLIMIT_NOFILE, &lim))
473 lim.rlim_cur = 1024;
474
475 for (int i = 0; i < lim.rlim_cur; ++i)
476 close (i);
477 }
478
479 {
480 sigset_t empty;
481 sigemptyset (&empty);
482 sigprocmask (SIG_SETMASK, &empty, 0);
483 }
484
485 // try to coredump with SIGTRAP
486 kill (getpid (), SIGTRAP);
567 abort (); 487 abort ();
568 } 488 }
569 489
570 LOG (llevError, "fork abort: %s\n", msg); 490 LOG (llevError, "fork abort: %s\n", msg);
571} 491}
575 void *ptr = g_slice_alloc (n); 495 void *ptr = g_slice_alloc (n);
576 496
577 if (!ptr) 497 if (!ptr)
578 throw std::bad_alloc (); 498 throw std::bad_alloc ();
579 499
500 slice_alloc += n;
580 return ptr; 501 return ptr;
581} 502}
582 503
583void *salloc_ (int n, void *src) throw (std::bad_alloc) 504void *salloc_ (int n, void *src) throw (std::bad_alloc)
584{ 505{
590 memset (ptr, 0, n); 511 memset (ptr, 0, n);
591 512
592 return ptr; 513 return ptr;
593} 514}
594 515
516/******************************************************************************/
517
518#if DEBUG_SALLOC
519
520#define MAGIC 0xa1b2c35543deadLL
521
522void *g_slice_alloc (unsigned long size)
523{
524 unsigned long *p = (unsigned long *) (g_slice_alloc)(size + sizeof (unsigned long));
525 *p++ = size ^ MAGIC;
526 //fprintf (stderr, "g_slice_alloc %ld %p\n", size, p);//D
527 return (void *)p;
528}
529
530void *g_slice_alloc0 (unsigned long size)
531{
532 return memset (g_slice_alloc (size), 0, size);
533}
534
535void g_slice_free1 (unsigned long size, void *ptr)
536{
537 //fprintf (stderr, "g_slice_free %ld %p\n", size, ptr);//D
538 if (expect_true (ptr))
539 {
540 unsigned long *p = (unsigned long *)ptr;
541 unsigned long s = *--p ^ MAGIC;
542
543 if (size != (unsigned long)(*p ^ MAGIC))
544 {
545 LOG (logBacktrace | llevError, "slice free size (%lx) doesn't match alloc size (%lx)\n", size, s);
546 abort ();
547 }
548
549 *p = MAGIC;
550
551 (g_slice_free1)(s + sizeof (unsigned long), p);
552 }
553}
554
555#endif
556
557/******************************************************************************/
558
595void assign (char *dst, const char *src, int maxlen) 559void assign (char *dst, const char *src, int maxlen)
596{ 560{
597 if (!src) 561 if (!src)
598 src = ""; 562 src = "";
599 563
614 } 578 }
615 else 579 else
616 memcpy (dst, src, len + 1); 580 memcpy (dst, src, len + 1);
617} 581}
618 582
583const char *
584format (const char *format, ...)
585{
586 static dynbuf_text buf;
587
588 buf.clear ();
589
590 va_list ap;
591 va_start (ap, format);
592 buf.vprintf (format, ap);
593 va_end (ap);
594
595 return buf;
596}
597
619tstamp now () 598tstamp now ()
620{ 599{
621 struct timeval tv; 600 struct timeval tv;
622 601
623 gettimeofday (&tv, 0); 602 gettimeofday (&tv, 0);
632 611
633 int diff = (b - a) & 7; 612 int diff = (b - a) & 7;
634 return diff <= 1 || diff >= 7; 613 return diff <= 1 || diff >= 7;
635} 614}
636 615
616/* crc32 0xdebb20e3 table and supplementary functions. */
617extern const uint32_t crc_32_tab[256] =
618{
619 0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,
620 0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,
621 0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,
622 0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,
623 0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,
624 0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,
625 0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,
626 0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,
627 0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,
628 0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,
629 0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,
630 0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,
631 0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,
632 0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,
633 0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,
634 0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,
635 0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,
636 0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,
637 0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,
638 0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,
639 0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,
640 0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,
641 0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,
642 0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,
643 0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,
644 0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,
645 0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,
646 0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,
647 0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,
648 0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,
649 0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,
650 0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,
651 0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,
652 0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,
653 0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,
654 0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,
655 0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,
656 0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,
657 0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,
658 0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,
659 0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,
660 0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,
661 0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,
662 0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,
663 0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,
664 0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,
665 0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,
666 0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,
667 0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,
668 0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,
669 0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,
670 0x2d02ef8dL
671};
672
673void thread::start (void *(*start_routine)(void *), void *arg)
674{
675 pthread_attr_t attr;
676
677 pthread_attr_init (&attr);
678 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
679 pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN < sizeof (long) * 4096
680 ? sizeof (long) * 4096 : PTHREAD_STACK_MIN);
681#ifdef PTHREAD_SCOPE_PROCESS
682 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
683#endif
684
685 sigset_t fullsigset, oldsigset;
686 sigfillset (&fullsigset);
687
688 pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
689
690 if (pthread_create (&id, &attr, start_routine, arg))
691 cleanup ("unable to create a new thread");
692
693 pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
694}
695

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