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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 1.77 by root, Sun May 4 14:12:37 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
40#include <glib.h> 38#include <glib.h>
41 39
42rand_gen rndm (time (0)); 40refcnt_base::refcnt_t refcnt_dummy;
41ssize_t slice_alloc;
42rand_gen rndm, rmg_rndm;
43 43
44void
44tausworthe_random_generator::tausworthe_random_generator (uint32_t seed) 45tausworthe_random_generator::seed (uint32_t seed)
45{ 46{
46 state [0] = max ( 2, seed * 69069U); 47 state [0] = seed * 69069U; if (state [0] < 2U) state [0] += 2U;
47 state [1] = max ( 8, state [0] * 69069U); 48 state [1] = state [0] * 69069U; if (state [0] < 8U) state [0] += 8U;
48 state [2] = max ( 16, state [1] * 69069U); 49 state [2] = state [1] * 69069U; if (state [0] < 16U) state [0] += 16U;
49 state [3] = max (128, state [2] * 69069U); 50 state [3] = state [2] * 69069U; if (state [0] < 128U) state [0] += 128U;
50 51
51 for (int i = 11; --i; ) 52 for (int i = 11; --i; )
52 operator ()(); 53 operator ()();
53} 54}
54 55
59 state [1] = ((state [1] & 0xFFFFFFF8U) << 2U) ^ (((state [1] << 2U) ^ state [1]) >> 27U); 60 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); 61 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); 62 state [3] = ((state [3] & 0xFFFFFF80U) << 13U) ^ (((state [3] << 3U) ^ state [3]) >> 12U);
62 63
63 return state [0] ^ state [1] ^ state [2] ^ state [3]; 64 return state [0] ^ state [1] ^ state [2] ^ state [3];
65}
66
67uint32_t
68tausworthe_random_generator::get_range (uint32_t num)
69{
70 return (next () * (uint64_t)num) >> 32U;
71}
72
73// return a number within (min .. max)
74int
75tausworthe_random_generator::get_range (int r_min, int r_max)
76{
77 return r_min + get_range (max (r_max - r_min + 1, 0));
64} 78}
65 79
66/* 80/*
67 * The random functions here take luck into account when rolling random 81 * 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 82 * dice or numbers. This function has less of an impact the larger the
81int 95int
82random_roll (int r_min, int r_max, const object *op, int goodbad) 96random_roll (int r_min, int r_max, const object *op, int goodbad)
83{ 97{
84 int base = r_max - r_min > 1 ? 20 : 50; /* d2 and d3 are corner cases */ 98 int base = r_max - r_min > 1 ? 20 : 50; /* d2 and d3 are corner cases */
85 99
86 if (r_max < 1 || r_max < r_min) 100 if (r_max < r_min)
87 { 101 {
88 LOG (llevError, "Calling random_roll with min=%d max=%d\n", r_min, r_max); 102 LOG (llevError | logBacktrace, "Calling random_roll with min=%d max=%d\n", r_min, r_max);
89 return r_min; 103 return r_min;
90 } 104 }
91 105
92 if (op->type == PLAYER) 106 if (op->type == PLAYER)
93 { 107 {
104 118
105/* 119/*
106 * This is a 64 bit version of random_roll above. This is needed 120 * This is a 64 bit version of random_roll above. This is needed
107 * for exp loss calculations for players changing religions. 121 * for exp loss calculations for players changing religions.
108 */ 122 */
109
110sint64 123sint64
111random_roll64 (sint64 min, sint64 max, const object *op, int goodbad) 124random_roll64 (sint64 min, sint64 max, const object *op, int goodbad)
112{ 125{
113 sint64 omin, diff, luck, ran;
114 int base;
115
116 omin = min; 126 sint64 omin = min;
117 diff = max - min + 1; 127 sint64 diff = max - min + 1;
118 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */ 128 int base = diff > 2 ? 20 : 50; /* d2 and d3 are corner cases */
119 129
120 if (max < 1 || diff < 1) 130 if (diff < 0)
121 { 131 {
122 LOG (llevError, "Calling random_roll with min=%" PRId64 " max=%" PRId64 "\n", min, max); 132 LOG (llevError | logBacktrace, "Calling random_roll64 with min=%" PRId64 " max=%" PRId64 "\n", min, max);
123 return (min); /* avoids a float exception */ 133 return (min); /* avoids a float exception */
124 } 134 }
125 135
126 /* Don't know of a portable call to get 64 bit random values. 136 /*
127 * So make a call to get two 32 bit random numbers, and just to 137 * 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 138 * a little bitshifting.
129 * 32 bit, so we don't get skewed results
130 */ 139 */
131 ran = (RANDOM () & 0xffffffff) | ((sint64) RANDOM () << 32); 140 sint64 ran = (sint64) rndm.next () ^ ((sint64) rndm.next () << 31);
132 141
133 if (op->type != PLAYER) 142 if (op->type != PLAYER)
134 return ((ran % diff) + min); 143 return ((ran % diff) + min);
135 144
136 luck = op->stats.luck; 145 int luck = op->stats.luck;
146
137 if (RANDOM () % base < MIN (10, abs (luck))) 147 if (rndm (base) < MIN (10, abs (luck)))
138 { 148 {
139 /* we have a winner */ 149 /* we have a winner */
140 ((luck > 0) ? (luck = 1) : (luck = -1)); 150 ((luck > 0) ? (luck = 1) : (luck = -1));
141 diff -= luck; 151 diff -= luck;
142 if (diff < 1) 152 if (diff < 1)
143 return (omin); /*check again */ 153 return (omin); /*check again */
154
144 ((goodbad) ? (min += luck) : (diff)); 155 ((goodbad) ? (min += luck) : (diff));
145 156
146 return (MAX (omin, MIN (max, (ran % diff) + min))); 157 return (MAX (omin, MIN (max, (ran % diff) + min)));
147 } 158 }
159
148 return ((ran % diff) + min); 160 return ran % diff + min;
149} 161}
150 162
151/* 163/*
152 * Roll a number of dice (2d3, 4d6). Uses op to determine luck, 164 * 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. 165 * 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, 166 * Generally, op should be the player/caster/hitter requesting the roll,
155 * not the recipient (ie, the poor slob getting hit). 167 * not the recipient (ie, the poor slob getting hit).
156 * The args are num D size (ie 4d6) [garbled 20010916] 168 * The args are num D size (ie 4d6) [garbled 20010916]
157 */ 169 */
158
159int 170int
160die_roll (int num, int size, const object *op, int goodbad) 171die_roll (int num, int size, const object *op, int goodbad)
161{ 172{
162 int min, diff, luck, total, i, gotlucky, base, ran; 173 int min, luck, total, i, gotlucky;
163 174
164 diff = size; 175 int diff = size;
165 min = 1; 176 min = 1;
166 luck = total = gotlucky = 0; 177 luck = total = gotlucky = 0;
167 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */ 178 int base = diff > 2 ? 20 : 50; /* d2 and d3 are corner cases */
179
168 if (size < 2 || diff < 1) 180 if (size < 2 || diff < 1)
169 { 181 {
170 LOG (llevError, "Calling die_roll with num=%d size=%d\n", num, size); 182 LOG (llevError, "Calling die_roll with num=%d size=%d\n", num, size);
171 return (num); /* avoids a float exception */ 183 return num; /* avoids a float exception */
172 } 184 }
173 185
174 if (op->type == PLAYER) 186 if (op->type == PLAYER)
175 luck = op->stats.luck; 187 luck = op->stats.luck;
176 188
177 for (i = 0; i < num; i++) 189 for (i = 0; i < num; i++)
178 { 190 {
179 if (RANDOM () % base < MIN (10, abs (luck)) && !gotlucky) 191 if (rndm (base) < MIN (10, abs (luck)) && !gotlucky)
180 { 192 {
181 /* we have a winner */ 193 /* we have a winner */
182 gotlucky++; 194 gotlucky++;
183 ((luck > 0) ? (luck = 1) : (luck = -1)); 195 ((luck > 0) ? (luck = 1) : (luck = -1));
184 diff -= luck; 196 diff -= luck;
185 if (diff < 1) 197 if (diff < 1)
186 return (num); /*check again */ 198 return (num); /*check again */
187 ((goodbad) ? (min += luck) : (diff)); 199 ((goodbad) ? (min += luck) : (diff));
188 ran = RANDOM ();
189 total += MAX (1, MIN (size, (ran % diff) + min)); 200 total += MAX (1, MIN (size, rndm (diff) + min));
190 } 201 }
191 else 202 else
192 {
193 total += RANDOM () % size + 1; 203 total += rndm (size) + 1;
194 }
195 } 204 }
205
196 return (total); 206 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} 207}
266 208
267/* convert materialname to materialtype_t */ 209/* convert materialname to materialtype_t */
268 210
269materialtype_t * 211materialtype_t *
270name_to_material (const char *name) 212name_to_material (const shstr &name)
271{ 213{
272 materialtype_t *mt, *nmt; 214 for (materialtype_t *mt = materialt; mt && mt->next; mt = mt->next)
215 if (name == mt->name)
216 return mt;
273 217
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; 218 return 0;
284} 219}
285 220
286/* when doing transmutation of objects, we have to recheck the resistances, 221/* when doing transmutation of objects, we have to recheck the resistances,
287 * as some that did not apply previously, may apply now. 222 * as some that did not apply previously, may apply now.
288 */ 223 */
289
290void 224void
291transmute_materialname (object *op, const object *change) 225transmute_materialname (object *op, const object *change)
292{ 226{
293 materialtype_t *mt; 227 materialtype_t *mt;
294 int j; 228 int j;
303 return; 237 return;
304 238
305 mt = name_to_material (op->materialname); 239 mt = name_to_material (op->materialname);
306 if (!mt) 240 if (!mt)
307 { 241 {
308 LOG (llevError, "archetype '%s>%s' uses nonexistent material '%s'\n", &op->arch->name, &op->name, &op->materialname); 242 LOG (llevError, "archetype '%s>%s' uses nonexistent material '%s'\n", &op->arch->archname, &op->name, &op->materialname);
309 return; 243 return;
310 } 244 }
311 245
312 for (j = 0; j < NROFATTACKS; j++) 246 for (j = 0; j < NROFATTACKS; j++)
313 if (op->resist[j] == 0 && change->resist[j] != 0) 247 if (op->resist[j] == 0 && change->resist[j] != 0)
324void 258void
325set_materialname (object *op, int difficulty, materialtype_t *nmt) 259set_materialname (object *op, int difficulty, materialtype_t *nmt)
326{ 260{
327 materialtype_t *mt, *lmt; 261 materialtype_t *mt, *lmt;
328 262
329#ifdef NEW_MATERIAL_CODE
330 int j;
331#endif
332
333 if (op->materialname != NULL) 263 if (op->materialname != NULL)
334 return; 264 return;
335 265
336
337
338 if (nmt == NULL) 266 if (nmt == NULL)
339 { 267 {
340 lmt = NULL; 268 lmt = NULL;
341#ifndef NEW_MATERIAL_CODE 269
342 for (mt = materialt; mt != NULL && mt->next != NULL; mt = mt->next) 270 for (mt = materialt; mt && mt->next; mt = mt->next)
343 { 271 if (op->materials & mt->material && rndm (1, 100) <= mt->chance &&
344 if (op->material & mt->material) 272 difficulty >= mt->difficulty && (op->magic >= mt->magic || mt->magic == 0))
345 { 273 {
346 lmt = mt; 274 lmt = mt;
275 if (!(op->is_weapon () || op->is_armor ()))
347 break; 276 break;
348 } 277 }
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 } 278 }
364 else 279 else
365 {
366 lmt = nmt; 280 lmt = nmt;
367 }
368 281
369 if (lmt != NULL) 282 if (lmt != NULL)
370 { 283 {
371#ifndef NEW_MATERIAL_CODE
372 op->materialname = lmt->name;
373 return;
374#else
375
376 if (op->stats.dam && op->is_weapon ()) 284 if (op->stats.dam && op->is_weapon ())
377 { 285 {
378 op->stats.dam += lmt->damage; 286 op->stats.dam += lmt->damage;
379 if (op->stats.dam < 1) 287 if (op->stats.dam < 1)
380 op->stats.dam = 1; 288 op->stats.dam = 1;
381 } 289 }
290
382 if (op->stats.sp && op->type == BOW) 291 if (op->stats.sp && op->type == BOW)
383 op->stats.sp += lmt->sp; 292 op->stats.sp += lmt->sp;
384 if (op->stats.wc && op->is_weapon ()) 293 if (op->stats.wc && op->is_weapon ())
385 op->stats.wc += lmt->wc; 294 op->stats.wc += lmt->wc;
386 if (op->is_armor ()) 295 if (op->is_armor ())
387 { 296 {
388 if (op->stats.ac) 297 if (op->stats.ac)
389 op->stats.ac += lmt->ac; 298 op->stats.ac += lmt->ac;
299
390 for (j = 0; j < NROFATTACKS; j++) 300 for (int j = 0; j < NROFATTACKS; j++)
391 if (op->resist[j] != 0) 301 if (op->resist[j] != 0)
392 { 302 {
393 op->resist[j] += lmt->mod[j]; 303 op->resist[j] += lmt->mod[j];
394 if (op->resist[j] > 100) 304 if (op->resist[j] > 100)
395 op->resist[j] = 100; 305 op->resist[j] = 100;
396 if (op->resist[j] < -100) 306 if (op->resist[j] < -100)
397 op->resist[j] = -100; 307 op->resist[j] = -100;
398 } 308 }
399 } 309 }
310
400 op->materialname = add_string (lmt->name); 311 op->materialname = lmt->name;
401 /* dont make it unstackable if it doesn't need to be */ 312 /* dont make it unstackable if it doesn't need to be */
402 if (op->is_weapon () || op->is_armor ()) 313 if (op->is_weapon () || op->is_armor ())
403 { 314 {
404 op->weight = (op->weight * lmt->weight) / 100; 315 op->weight = (op->weight * lmt->weight) / 100;
405 op->value = (op->value * lmt->value) / 100; 316 op->value = (op->value * lmt->value) / 100;
406 } 317 }
407#endif
408 } 318 }
409} 319}
410 320
411/* 321/*
412 * Strip out the media tags from a String. 322 * Strip out the media tags from a String.
507 * a 'list' for the purposes here, is a string of items, seperated by commas, except 417 * 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. 418 * 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. 419 * This function will also strip all trailing non alphanumeric characters.
510 * It does not insert an oxford comma. 420 * It does not insert an oxford comma.
511 */ 421 */
512
513void 422void
514make_list_like (char *input) 423make_list_like (char *input)
515{ 424{
516 char *p, tmp[MAX_BUF]; 425 char *p, tmp[MAX_BUF];
517 int i; 426 int i;
548fork_abort (const char *msg) 457fork_abort (const char *msg)
549{ 458{
550 if (!fork ()) 459 if (!fork ())
551 { 460 {
552 signal (SIGABRT, SIG_DFL); 461 signal (SIGABRT, SIG_DFL);
462 // try to put corefiles into a subdirectory, if existing, to allow
463 // an administrator to reduce the I/O load.
464 chdir ("cores");
553 abort (); 465 abort ();
554 } 466 }
555 467
556 LOG (llevError, "fork abort: %s\n", msg); 468 LOG (llevError, "fork abort: %s\n", msg);
557} 469}
561 void *ptr = g_slice_alloc (n); 473 void *ptr = g_slice_alloc (n);
562 474
563 if (!ptr) 475 if (!ptr)
564 throw std::bad_alloc (); 476 throw std::bad_alloc ();
565 477
478 slice_alloc += n;
566 return ptr; 479 return ptr;
567} 480}
568 481
569void *salloc_ (int n, void *src) throw (std::bad_alloc) 482void *salloc_ (int n, void *src) throw (std::bad_alloc)
570{ 483{
576 memset (ptr, 0, n); 489 memset (ptr, 0, n);
577 490
578 return ptr; 491 return ptr;
579} 492}
580 493
494/******************************************************************************/
495
496#if DEBUG_SALLOC
497
498#define MAGIC 0xa1b2c35543deadLL
499
500void *g_slice_alloc (unsigned long size)
501{
502 unsigned long *p = (unsigned long *) (g_slice_alloc)(size + sizeof (unsigned long));
503 *p++ = size ^ MAGIC;
504 //fprintf (stderr, "g_slice_alloc %ld %p\n", size, p);//D
505 return (void *)p;
506}
507
508void *g_slice_alloc0 (unsigned long size)
509{
510 return memset (g_slice_alloc (size), 0, size);
511}
512
513void g_slice_free1 (unsigned long size, void *ptr)
514{
515 //fprintf (stderr, "g_slice_free %ld %p\n", size, ptr);//D
516 if (expect_true (ptr))
517 {
518 unsigned long *p = (unsigned long *)ptr;
519 unsigned long s = *--p ^ MAGIC;
520
521 if (size != (unsigned long)(*p ^ MAGIC))
522 {
523 LOG (logBacktrace | llevError, "slice free size (%lx) doesn't match alloc size (%lx)\n", size, s);
524 abort ();
525 }
526
527 *p = MAGIC;
528
529 (g_slice_free1)(s + sizeof (unsigned long), p);
530 }
531}
532
533#endif
534
535/******************************************************************************/
536
581void assign (char *dst, const char *src, int maxlen) 537void assign (char *dst, const char *src, int maxlen)
582{ 538{
583 if (!src) 539 if (!src)
584 src = ""; 540 src = "";
585 541
600 } 556 }
601 else 557 else
602 memcpy (dst, src, len + 1); 558 memcpy (dst, src, len + 1);
603} 559}
604 560
561const char *
562format (const char *format, ...)
563{
564 static dynbuf_text buf;
565
566 buf.clear ();
567
568 va_list ap;
569 va_start (ap, format);
570 buf.vprintf (format, ap);
571 va_end (ap);
572
573 return buf;
574}
575
605tstamp now () 576tstamp now ()
606{ 577{
607 struct timeval tv; 578 struct timeval tv;
608 579
609 gettimeofday (&tv, 0); 580 gettimeofday (&tv, 0);
618 589
619 int diff = (b - a) & 7; 590 int diff = (b - a) & 7;
620 return diff <= 1 || diff >= 7; 591 return diff <= 1 || diff >= 7;
621} 592}
622 593
594/* crc32 0xdebb20e3 table and supplementary functions. */
595extern const uint32_t crc_32_tab[256] =
596{
597 0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,
598 0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,
599 0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,
600 0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,
601 0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,
602 0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,
603 0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,
604 0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,
605 0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,
606 0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,
607 0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,
608 0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,
609 0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,
610 0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,
611 0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,
612 0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,
613 0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,
614 0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,
615 0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,
616 0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,
617 0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,
618 0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,
619 0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,
620 0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,
621 0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,
622 0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,
623 0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,
624 0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,
625 0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,
626 0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,
627 0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,
628 0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,
629 0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,
630 0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,
631 0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,
632 0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,
633 0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,
634 0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,
635 0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,
636 0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,
637 0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,
638 0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,
639 0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,
640 0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,
641 0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,
642 0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,
643 0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,
644 0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,
645 0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,
646 0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,
647 0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,
648 0x2d02ef8dL
649};
650
651void thread::start (void *(*start_routine)(void *), void *arg)
652{
653 pthread_attr_t attr;
654
655 pthread_attr_init (&attr);
656 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
657 pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN < sizeof (long) * 4096
658 ? sizeof (long) * 4096 : PTHREAD_STACK_MIN);
659#ifdef PTHREAD_SCOPE_PROCESS
660 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
661#endif
662
663 sigset_t fullsigset, oldsigset;
664 sigfillset (&fullsigset);
665
666 pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
667
668 if (pthread_create (&id, &attr, start_routine, arg))
669 cleanup ("unable to create a new thread");
670
671 pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
672}
673

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