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Comparing deliantra/server/common/utils.C (file contents):
Revision 1.43 by root, Fri Jan 19 22:24:10 2007 UTC vs.
Revision 1.81 by root, Wed Sep 10 21:29:39 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 ( 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 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 fprintf (stderr, "background fork_abort in progress, remove me when debugged.\n");//D
455
456 signal (SIGINT , SIG_IGN);
457 signal (SIGTERM, SIG_IGN);
566 signal (SIGABRT, SIG_DFL); 458 signal (SIGABRT, SIG_IGN);
459
460 signal (SIGSEGV, SIG_DFL);
461 signal (SIGBUS , SIG_DFL);
462 signal (SIGILL , SIG_DFL);
463 signal (SIGTRAP, SIG_DFL);
464
465 // try to put corefiles into a subdirectory, if existing, to allow
466 // an administrator to reduce the I/O load.
467 chdir ("cores");
468
469 // try to detach us from as many external dependencies as possible
470 // as coredumping can take time by closing all fd's.
471 {
472 struct rlimit lim;
473
474 if (getrlimit (RLIMIT_NOFILE, &lim))
475 lim.rlim_cur = 1024;
476
477 for (int i = 0; i < lim.rlim_cur; ++i)
478 close (i);
479 }
480
481 {
482 sigset_t empty;
483 sigemptyset (&empty);
484 sigprocmask (SIG_SETMASK, &empty, 0);
485 }
486
487 // try to coredump with SIGTRAP
488 kill (getpid (), SIGTRAP);
567 abort (); 489 abort ();
568 } 490 }
569 491
570 LOG (llevError, "fork abort: %s\n", msg); 492 LOG (llevError, "fork abort: %s\n", msg);
571} 493}
575 void *ptr = g_slice_alloc (n); 497 void *ptr = g_slice_alloc (n);
576 498
577 if (!ptr) 499 if (!ptr)
578 throw std::bad_alloc (); 500 throw std::bad_alloc ();
579 501
502 slice_alloc += n;
580 return ptr; 503 return ptr;
581} 504}
582 505
583void *salloc_ (int n, void *src) throw (std::bad_alloc) 506void *salloc_ (int n, void *src) throw (std::bad_alloc)
584{ 507{
590 memset (ptr, 0, n); 513 memset (ptr, 0, n);
591 514
592 return ptr; 515 return ptr;
593} 516}
594 517
518/******************************************************************************/
519
520#if DEBUG_SALLOC
521
522#define MAGIC 0xa1b2c35543deadLL
523
524void *g_slice_alloc (unsigned long size)
525{
526 unsigned long *p = (unsigned long *) (g_slice_alloc)(size + sizeof (unsigned long));
527 *p++ = size ^ MAGIC;
528 //fprintf (stderr, "g_slice_alloc %ld %p\n", size, p);//D
529 return (void *)p;
530}
531
532void *g_slice_alloc0 (unsigned long size)
533{
534 return memset (g_slice_alloc (size), 0, size);
535}
536
537void g_slice_free1 (unsigned long size, void *ptr)
538{
539 //fprintf (stderr, "g_slice_free %ld %p\n", size, ptr);//D
540 if (expect_true (ptr))
541 {
542 unsigned long *p = (unsigned long *)ptr;
543 unsigned long s = *--p ^ MAGIC;
544
545 if (size != (unsigned long)(*p ^ MAGIC))
546 {
547 LOG (logBacktrace | llevError, "slice free size (%lx) doesn't match alloc size (%lx)\n", size, s);
548 abort ();
549 }
550
551 *p = MAGIC;
552
553 (g_slice_free1)(s + sizeof (unsigned long), p);
554 }
555}
556
557#endif
558
559/******************************************************************************/
560
595void assign (char *dst, const char *src, int maxlen) 561void assign (char *dst, const char *src, int maxlen)
596{ 562{
597 if (!src) 563 if (!src)
598 src = ""; 564 src = "";
599 565
614 } 580 }
615 else 581 else
616 memcpy (dst, src, len + 1); 582 memcpy (dst, src, len + 1);
617} 583}
618 584
585const char *
586format (const char *format, ...)
587{
588 static dynbuf_text buf;
589
590 buf.clear ();
591
592 va_list ap;
593 va_start (ap, format);
594 buf.vprintf (format, ap);
595 va_end (ap);
596
597 return buf;
598}
599
619tstamp now () 600tstamp now ()
620{ 601{
621 struct timeval tv; 602 struct timeval tv;
622 603
623 gettimeofday (&tv, 0); 604 gettimeofday (&tv, 0);
632 613
633 int diff = (b - a) & 7; 614 int diff = (b - a) & 7;
634 return diff <= 1 || diff >= 7; 615 return diff <= 1 || diff >= 7;
635} 616}
636 617
618/* crc32 0xdebb20e3 table and supplementary functions. */
619extern const uint32_t crc_32_tab[256] =
620{
621 0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,
622 0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,
623 0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,
624 0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,
625 0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,
626 0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,
627 0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,
628 0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,
629 0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,
630 0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,
631 0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,
632 0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,
633 0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,
634 0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,
635 0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,
636 0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,
637 0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,
638 0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,
639 0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,
640 0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,
641 0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,
642 0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,
643 0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,
644 0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,
645 0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,
646 0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,
647 0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,
648 0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,
649 0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,
650 0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,
651 0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,
652 0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,
653 0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,
654 0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,
655 0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,
656 0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,
657 0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,
658 0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,
659 0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,
660 0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,
661 0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,
662 0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,
663 0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,
664 0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,
665 0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,
666 0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,
667 0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,
668 0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,
669 0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,
670 0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,
671 0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,
672 0x2d02ef8dL
673};
674
675void thread::start (void *(*start_routine)(void *), void *arg)
676{
677 pthread_attr_t attr;
678
679 pthread_attr_init (&attr);
680 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
681 pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN < sizeof (long) * 4096
682 ? sizeof (long) * 4096 : PTHREAD_STACK_MIN);
683#ifdef PTHREAD_SCOPE_PROCESS
684 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
685#endif
686
687 sigset_t fullsigset, oldsigset;
688 sigfillset (&fullsigset);
689
690 pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
691
692 if (pthread_create (&id, &attr, start_routine, arg))
693 cleanup ("unable to create a new thread");
694
695 pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
696}
697

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