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Comparing deliantra/server/common/utils.C (file contents):
Revision 1.41 by root, Thu Jan 18 22:19:59 2007 UTC vs.
Revision 1.79 by root, Sat Aug 30 05:19:03 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 (time (0)); 43refcnt_base::refcnt_t refcnt_dummy;
44ssize_t slice_alloc;
45rand_gen rndm, rmg_rndm;
43 46
47void
44tausworthe_random_generator::tausworthe_random_generator (uint32_t seed) 48tausworthe_random_generator::seed (uint32_t seed)
45{ 49{
46 state [0] = max ( 2, seed * 69069U); 50 state [0] = seed * 69069U; if (state [0] < 2U) state [0] += 2U;
47 state [1] = max ( 8, state [0] * 69069U); 51 state [1] = state [0] * 69069U; if (state [0] < 8U) state [0] += 8U;
48 state [2] = max ( 16, state [1] * 69069U); 52 state [2] = state [1] * 69069U; if (state [0] < 16U) state [0] += 16U;
49 state [3] = max (128, state [2] * 69069U); 53 state [3] = state [2] * 69069U; if (state [0] < 128U) state [0] += 128U;
50 54
51 for (int i = 11; --i; ) 55 for (int i = 11; --i; )
52 operator ()(); 56 operator ()();
53} 57}
54 58
59 state [1] = ((state [1] & 0xFFFFFFF8U) << 2U) ^ (((state [1] << 2U) ^ state [1]) >> 27U); 63 state [1] = ((state [1] & 0xFFFFFFF8U) << 2U) ^ (((state [1] << 2U) ^ state [1]) >> 27U);
60 state [2] = ((state [2] & 0xFFFFFFF0U) << 7U) ^ (((state [2] << 13U) ^ state [2]) >> 21U); 64 state [2] = ((state [2] & 0xFFFFFFF0U) << 7U) ^ (((state [2] << 13U) ^ state [2]) >> 21U);
61 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);
62 66
63 return state [0] ^ state [1] ^ state [2] ^ state [3]; 67 return state [0] ^ state [1] ^ state [2] ^ state [3];
68}
69
70uint32_t
71tausworthe_random_generator::get_range (uint32_t num)
72{
73 return (next () * (uint64_t)num) >> 32U;
74}
75
76// return a number within (min .. max)
77int
78tausworthe_random_generator::get_range (int r_min, int r_max)
79{
80 return r_min + get_range (max (r_max - r_min + 1, 0));
64} 81}
65 82
66/* 83/*
67 * The random functions here take luck into account when rolling random 84 * The random functions here take luck into account when rolling random
68 * 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
79 * not the recipient (ie, the poor slob getting hit). [garbled 20010916] 96 * not the recipient (ie, the poor slob getting hit). [garbled 20010916]
80 */ 97 */
81int 98int
82random_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)
83{ 100{
101 r_max = max (r_min, r_max);
102
84 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 */
85
86 if (r_max < 1 || r_max < r_min)
87 {
88 LOG (llevError, "Calling random_roll with min=%d max=%d\n", r_min, r_max);
89 return r_min;
90 }
91 104
92 if (op->type == PLAYER) 105 if (op->type == PLAYER)
93 { 106 {
94 int luck = op->stats.luck; 107 int luck = op->stats.luck;
95 108
104 117
105/* 118/*
106 * 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
107 * for exp loss calculations for players changing religions. 120 * for exp loss calculations for players changing religions.
108 */ 121 */
109
110sint64 122sint64
111random_roll64 (sint64 min, sint64 max, const object *op, int goodbad) 123random_roll64 (sint64 r_min, sint64 r_max, const object *op, int goodbad)
112{ 124{
113 sint64 omin, diff, luck, ran; 125 sint64 omin = r_min;
114 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 */
115 128
116 omin = min; 129 /*
117 diff = max - min + 1;
118 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */
119
120 if (max < 1 || diff < 1)
121 {
122 LOG (llevError, "Calling random_roll with min=%" PRId64 " max=%" PRId64 "\n", min, max);
123 return (min); /* avoids a float exception */
124 }
125
126 /* Don't know of a portable call to get 64 bit random values.
127 * 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
128 * a little byteshifting. Do make sure the first one is only 131 * a little bitshifting.
129 * 32 bit, so we don't get skewed results
130 */ 132 */
131 ran = (RANDOM () & 0xffffffff) | ((sint64) RANDOM () << 32); 133 sint64 ran = (sint64) rndm.next () ^ ((sint64) rndm.next () << 31);
132 134
133 if (op->type != PLAYER) 135 if (op->type != PLAYER)
134 return ((ran % diff) + min); 136 return ((ran % range) + r_min);
135 137
136 luck = op->stats.luck; 138 int luck = op->stats.luck;
139
137 if (RANDOM () % base < MIN (10, abs (luck))) 140 if (rndm (base) < min (10, abs (luck)))
138 { 141 {
139 /* we have a winner */ 142 /* we have a winner */
140 ((luck > 0) ? (luck = 1) : (luck = -1)); 143 ((luck > 0) ? (luck = 1) : (luck = -1));
141 diff -= luck; 144 range -= luck;
142 if (diff < 1) 145 if (range < 1)
143 return (omin); /*check again */ 146 return (omin); /*check again */
147
144 ((goodbad) ? (min += luck) : (diff)); 148 ((goodbad) ? (r_min += luck) : (range));
145 149
146 return (MAX (omin, MIN (max, (ran % diff) + min))); 150 return (max (omin, min (r_max, (ran % range) + r_min)));
147 } 151 }
148 return ((ran % diff) + min); 152
153 return ran % range + r_min;
149} 154}
150 155
151/* 156/*
152 * 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,
153 * 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.
154 * Generally, op should be the player/caster/hitter requesting the roll, 159 * Generally, op should be the player/caster/hitter requesting the roll,
155 * not the recipient (ie, the poor slob getting hit). 160 * not the recipient (ie, the poor slob getting hit).
156 * The args are num D size (ie 4d6) [garbled 20010916] 161 * The args are num D size (ie 4d6) [garbled 20010916]
157 */ 162 */
158
159int 163int
160die_roll (int num, int size, const object *op, int goodbad) 164die_roll (int num, int size, const object *op, int goodbad)
161{ 165{
162 int min, diff, luck, total, i, gotlucky, base, ran; 166 int min, luck, total, i, gotlucky;
163 167
164 diff = size; 168 int diff = size;
165 min = 1; 169 min = 1;
166 luck = total = gotlucky = 0; 170 luck = total = gotlucky = 0;
167 ((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
168 if (size < 2 || diff < 1) 173 if (size < 2 || diff < 1)
169 { 174 {
170 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);
171 return (num); /* avoids a float exception */ 176 return num; /* avoids a float exception */
172 } 177 }
173 178
174 if (op->type == PLAYER) 179 if (op->type == PLAYER)
175 luck = op->stats.luck; 180 luck = op->stats.luck;
176 181
177 for (i = 0; i < num; i++) 182 for (i = 0; i < num; i++)
178 { 183 {
179 if (RANDOM () % base < MIN (10, abs (luck)) && !gotlucky) 184 if (rndm (base) < MIN (10, abs (luck)) && !gotlucky)
180 { 185 {
181 /* we have a winner */ 186 /* we have a winner */
182 gotlucky++; 187 gotlucky++;
183 ((luck > 0) ? (luck = 1) : (luck = -1)); 188 ((luck > 0) ? (luck = 1) : (luck = -1));
184 diff -= luck; 189 diff -= luck;
185 if (diff < 1) 190 if (diff < 1)
186 return (num); /*check again */ 191 return (num); /*check again */
187 ((goodbad) ? (min += luck) : (diff)); 192 ((goodbad) ? (min += luck) : (diff));
188 ran = RANDOM ();
189 total += MAX (1, MIN (size, (ran % diff) + min)); 193 total += MAX (1, MIN (size, rndm (diff) + min));
190 } 194 }
191 else 195 else
192 {
193 total += RANDOM () % size + 1; 196 total += rndm (size) + 1;
194 }
195 } 197 }
198
196 return (total); 199 return total;
197}
198
199/* decay and destroy perishable items in a map */
200void
201maptile::decay_objects ()
202{
203 if (!spaces)
204 return;
205
206 for (mapspace *ms = spaces + size (); ms-- > spaces; )
207 for (object *above, *op = ms->bot; op; op = above)
208 {
209 above = op->above;
210
211 bool destroy = 0;
212
213 // do not decay anything above unique floor tiles (yet :)
214 if (QUERY_FLAG (op, FLAG_IS_FLOOR) && QUERY_FLAG (op, FLAG_UNIQUE))
215 break;
216
217 if (QUERY_FLAG (op, FLAG_IS_FLOOR)
218 || QUERY_FLAG (op, FLAG_OBJ_ORIGINAL)
219 || QUERY_FLAG (op, FLAG_OBJ_SAVE_ON_OVL)
220 || QUERY_FLAG (op, FLAG_UNIQUE)
221 || QUERY_FLAG (op, FLAG_OVERLAY_FLOOR)
222 || QUERY_FLAG (op, FLAG_UNPAID)
223 || op->is_alive ())
224 ; // do not decay
225 else if (op->is_weapon ())
226 {
227 op->stats.dam--;
228 if (op->stats.dam < 0)
229 destroy = 1;
230 }
231 else if (op->is_armor ())
232 {
233 op->stats.ac--;
234 if (op->stats.ac < 0)
235 destroy = 1;
236 }
237 else if (op->type == FOOD)
238 {
239 op->stats.food -= rndm (5, 20);
240 if (op->stats.food < 0)
241 destroy = 1;
242 }
243 else
244 {
245 int mat = op->material;
246
247 if (mat & M_PAPER
248 || mat & M_LEATHER
249 || mat & M_WOOD
250 || mat & M_ORGANIC
251 || mat & M_CLOTH
252 || mat & M_LIQUID
253 || (mat & M_IRON && rndm (1, 5) == 1)
254 || (mat & M_GLASS && rndm (1, 2) == 1)
255 || ((mat & M_STONE || mat & M_ADAMANT) && rndm (1, 10) == 1)
256 || ((mat & M_SOFT_METAL || mat & M_BONE) && rndm (1, 3) == 1)
257 || (mat & M_ICE && temp > 32))
258 destroy = 1;
259 }
260
261 /* adjust overall chance below */
262 if (destroy && rndm (0, 1))
263 op->destroy ();
264 }
265} 200}
266 201
267/* convert materialname to materialtype_t */ 202/* convert materialname to materialtype_t */
268 203
269materialtype_t * 204materialtype_t *
270name_to_material (const char *name) 205name_to_material (const shstr &name)
271{ 206{
272 materialtype_t *mt, *nmt; 207 for (materialtype_t *mt = materialt; mt && mt->next; mt = mt->next)
208 if (name == mt->name)
209 return mt;
273 210
274 mt = NULL;
275 for (nmt = materialt; nmt != NULL && nmt->next != NULL; nmt = nmt->next)
276 {
277 if (strcmp (name, nmt->name) == 0)
278 {
279 mt = nmt;
280 break;
281 }
282 }
283 return mt; 211 return 0;
284} 212}
285 213
286/* when doing transmutation of objects, we have to recheck the resistances, 214/* when doing transmutation of objects, we have to recheck the resistances,
287 * as some that did not apply previously, may apply now. 215 * as some that did not apply previously, may apply now.
288 */ 216 */
289
290void 217void
291transmute_materialname (object *op, const object *change) 218transmute_materialname (object *op, const object *change)
292{ 219{
293 materialtype_t *mt; 220 materialtype_t *mt;
294 int j; 221 int j;
303 return; 230 return;
304 231
305 mt = name_to_material (op->materialname); 232 mt = name_to_material (op->materialname);
306 if (!mt) 233 if (!mt)
307 { 234 {
308 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);
309 return; 236 return;
310 } 237 }
311 238
312 for (j = 0; j < NROFATTACKS; j++) 239 for (j = 0; j < NROFATTACKS; j++)
313 if (op->resist[j] == 0 && change->resist[j] != 0) 240 if (op->resist[j] == 0 && change->resist[j] != 0)
324void 251void
325set_materialname (object *op, int difficulty, materialtype_t *nmt) 252set_materialname (object *op, int difficulty, materialtype_t *nmt)
326{ 253{
327 materialtype_t *mt, *lmt; 254 materialtype_t *mt, *lmt;
328 255
329#ifdef NEW_MATERIAL_CODE
330 int j;
331#endif
332
333 if (op->materialname != NULL) 256 if (op->materialname != NULL)
334 return; 257 return;
335 258
336
337
338 if (nmt == NULL) 259 if (nmt == NULL)
339 { 260 {
340 lmt = NULL; 261 lmt = NULL;
341#ifndef NEW_MATERIAL_CODE 262
342 for (mt = materialt; mt != NULL && mt->next != NULL; mt = mt->next) 263 for (mt = materialt; mt && mt->next; mt = mt->next)
343 { 264 if (op->materials & mt->material && rndm (1, 100) <= mt->chance &&
344 if (op->material & mt->material) 265 difficulty >= mt->difficulty && (op->magic >= mt->magic || mt->magic == 0))
345 { 266 {
346 lmt = mt; 267 lmt = mt;
268 if (!(op->is_weapon () || op->is_armor ()))
347 break; 269 break;
348 } 270 }
349 }
350
351#else
352 for (mt = materialt; mt != NULL && mt->next != NULL; mt = mt->next)
353 {
354 if (op->material & mt->material && rndm (1, 100) <= mt->chance &&
355 difficulty >= mt->difficulty && (op->magic >= mt->magic || mt->magic == 0))
356 {
357 lmt = mt;
358 if (!(op->is_weapon () || op->is_armor ()))
359 break;
360 }
361 }
362#endif
363 } 271 }
364 else 272 else
365 {
366 lmt = nmt; 273 lmt = nmt;
367 }
368 274
369 if (lmt != NULL) 275 if (lmt != NULL)
370 { 276 {
371#ifndef NEW_MATERIAL_CODE
372 op->materialname = lmt->name;
373 return;
374#else
375
376 if (op->stats.dam && op->is_weapon ()) 277 if (op->stats.dam && op->is_weapon ())
377 { 278 {
378 op->stats.dam += lmt->damage; 279 op->stats.dam += lmt->damage;
379 if (op->stats.dam < 1) 280 if (op->stats.dam < 1)
380 op->stats.dam = 1; 281 op->stats.dam = 1;
381 } 282 }
283
382 if (op->stats.sp && op->type == BOW) 284 if (op->stats.sp && op->type == BOW)
383 op->stats.sp += lmt->sp; 285 op->stats.sp += lmt->sp;
384 if (op->stats.wc && op->is_weapon ()) 286 if (op->stats.wc && op->is_weapon ())
385 op->stats.wc += lmt->wc; 287 op->stats.wc += lmt->wc;
386 if (op->is_armor ()) 288 if (op->is_armor ())
387 { 289 {
388 if (op->stats.ac) 290 if (op->stats.ac)
389 op->stats.ac += lmt->ac; 291 op->stats.ac += lmt->ac;
292
390 for (j = 0; j < NROFATTACKS; j++) 293 for (int j = 0; j < NROFATTACKS; j++)
391 if (op->resist[j] != 0) 294 if (op->resist[j] != 0)
392 { 295 {
393 op->resist[j] += lmt->mod[j]; 296 op->resist[j] += lmt->mod[j];
394 if (op->resist[j] > 100) 297 if (op->resist[j] > 100)
395 op->resist[j] = 100; 298 op->resist[j] = 100;
396 if (op->resist[j] < -100) 299 if (op->resist[j] < -100)
397 op->resist[j] = -100; 300 op->resist[j] = -100;
398 } 301 }
399 } 302 }
303
400 op->materialname = add_string (lmt->name); 304 op->materialname = lmt->name;
401 /* dont make it unstackable if it doesn't need to be */ 305 /* dont make it unstackable if it doesn't need to be */
402 if (op->is_weapon () || op->is_armor ()) 306 if (op->is_weapon () || op->is_armor ())
403 { 307 {
404 op->weight = (op->weight * lmt->weight) / 100; 308 op->weight = (op->weight * lmt->weight) / 100;
405 op->value = (op->value * lmt->value) / 100; 309 op->value = (op->value * lmt->value) / 100;
406 } 310 }
407#endif
408 } 311 }
409} 312}
410 313
411/* 314/*
412 * Strip out the media tags from a String. 315 * Strip out the media tags from a String.
507 * 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
508 * 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.
509 * This function will also strip all trailing non alphanumeric characters. 412 * This function will also strip all trailing non alphanumeric characters.
510 * It does not insert an oxford comma. 413 * It does not insert an oxford comma.
511 */ 414 */
512
513void 415void
514make_list_like (char *input) 416make_list_like (char *input)
515{ 417{
516 char *p, tmp[MAX_BUF]; 418 char *p, tmp[MAX_BUF];
517 int i; 419 int i;
548fork_abort (const char *msg) 450fork_abort (const char *msg)
549{ 451{
550 if (!fork ()) 452 if (!fork ())
551 { 453 {
552 signal (SIGABRT, SIG_DFL); 454 signal (SIGABRT, SIG_DFL);
455
456 // try to put corefiles into a subdirectory, if existing, to allow
457 // an administrator to reduce the I/O load.
458 chdir ("cores");
459
460 // try to detach us from as many external dependencies as possible
461 // as coredumping can take time by closing all fd's.
462 {
463 struct rlimit lim;
464
465 if (getrlimit (RLIMIT_NOFILE, &lim))
466 lim.rlim_cur = 1024;
467
468 for (int i = 0; i < lim.rlim_cur; ++i)
469 close (i);
470 }
471
553 abort (); 472 abort ();
554 } 473 }
555 474
556 LOG (llevError, "fork abort: %s\n", msg); 475 LOG (llevError, "fork abort: %s\n", msg);
557} 476}
561 void *ptr = g_slice_alloc (n); 480 void *ptr = g_slice_alloc (n);
562 481
563 if (!ptr) 482 if (!ptr)
564 throw std::bad_alloc (); 483 throw std::bad_alloc ();
565 484
485 slice_alloc += n;
566 return ptr; 486 return ptr;
567} 487}
568 488
569void *salloc_ (int n, void *src) throw (std::bad_alloc) 489void *salloc_ (int n, void *src) throw (std::bad_alloc)
570{ 490{
576 memset (ptr, 0, n); 496 memset (ptr, 0, n);
577 497
578 return ptr; 498 return ptr;
579} 499}
580 500
501/******************************************************************************/
502
503#if DEBUG_SALLOC
504
505#define MAGIC 0xa1b2c35543deadLL
506
507void *g_slice_alloc (unsigned long size)
508{
509 unsigned long *p = (unsigned long *) (g_slice_alloc)(size + sizeof (unsigned long));
510 *p++ = size ^ MAGIC;
511 //fprintf (stderr, "g_slice_alloc %ld %p\n", size, p);//D
512 return (void *)p;
513}
514
515void *g_slice_alloc0 (unsigned long size)
516{
517 return memset (g_slice_alloc (size), 0, size);
518}
519
520void g_slice_free1 (unsigned long size, void *ptr)
521{
522 //fprintf (stderr, "g_slice_free %ld %p\n", size, ptr);//D
523 if (expect_true (ptr))
524 {
525 unsigned long *p = (unsigned long *)ptr;
526 unsigned long s = *--p ^ MAGIC;
527
528 if (size != (unsigned long)(*p ^ MAGIC))
529 {
530 LOG (logBacktrace | llevError, "slice free size (%lx) doesn't match alloc size (%lx)\n", size, s);
531 abort ();
532 }
533
534 *p = MAGIC;
535
536 (g_slice_free1)(s + sizeof (unsigned long), p);
537 }
538}
539
540#endif
541
542/******************************************************************************/
543
581void assign (char *dst, const char *src, int maxlen) 544void assign (char *dst, const char *src, int maxlen)
582{ 545{
583 if (!src) 546 if (!src)
584 src = ""; 547 src = "";
585 548
600 } 563 }
601 else 564 else
602 memcpy (dst, src, len + 1); 565 memcpy (dst, src, len + 1);
603} 566}
604 567
568const char *
569format (const char *format, ...)
570{
571 static dynbuf_text buf;
572
573 buf.clear ();
574
575 va_list ap;
576 va_start (ap, format);
577 buf.vprintf (format, ap);
578 va_end (ap);
579
580 return buf;
581}
582
605tstamp now () 583tstamp now ()
606{ 584{
607 struct timeval tv; 585 struct timeval tv;
608 586
609 gettimeofday (&tv, 0); 587 gettimeofday (&tv, 0);
618 596
619 int diff = (b - a) & 7; 597 int diff = (b - a) & 7;
620 return diff <= 1 || diff >= 7; 598 return diff <= 1 || diff >= 7;
621} 599}
622 600
601/* crc32 0xdebb20e3 table and supplementary functions. */
602extern const uint32_t crc_32_tab[256] =
603{
604 0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,
605 0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,
606 0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,
607 0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,
608 0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,
609 0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,
610 0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,
611 0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,
612 0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,
613 0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,
614 0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,
615 0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,
616 0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,
617 0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,
618 0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,
619 0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,
620 0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,
621 0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,
622 0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,
623 0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,
624 0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,
625 0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,
626 0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,
627 0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,
628 0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,
629 0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,
630 0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,
631 0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,
632 0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,
633 0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,
634 0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,
635 0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,
636 0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,
637 0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,
638 0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,
639 0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,
640 0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,
641 0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,
642 0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,
643 0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,
644 0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,
645 0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,
646 0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,
647 0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,
648 0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,
649 0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,
650 0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,
651 0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,
652 0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,
653 0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,
654 0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,
655 0x2d02ef8dL
656};
657
658void thread::start (void *(*start_routine)(void *), void *arg)
659{
660 pthread_attr_t attr;
661
662 pthread_attr_init (&attr);
663 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
664 pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN < sizeof (long) * 4096
665 ? sizeof (long) * 4096 : PTHREAD_STACK_MIN);
666#ifdef PTHREAD_SCOPE_PROCESS
667 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
668#endif
669
670 sigset_t fullsigset, oldsigset;
671 sigfillset (&fullsigset);
672
673 pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
674
675 if (pthread_create (&id, &attr, start_routine, arg))
676 cleanup ("unable to create a new thread");
677
678 pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
679}
680

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