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Comparing deliantra/server/common/utils.C (file contents):
Revision 1.39 by pippijn, Mon Jan 15 21:06:18 2007 UTC vs.
Revision 1.104 by root, Wed Nov 16 23:41:59 2016 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 (©) 2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5 * Copyright (C) 2002 Mark Wedel & Crossfire Development Team
6 * Copyright (C) 1992 Frank Tore Johansen
7 * 5 *
8 * This program is free software; you can redistribute it and/or modify 6 * Deliantra is free software: you can redistribute it and/or modify it under
9 * it under the terms of the GNU General Public License as published by 7 * the terms of the Affero GNU General Public License as published by the
10 * the Free Software Foundation; either version 2 of the License, or 8 * Free Software Foundation, either version 3 of the License, or (at your
11 * (at your option) any later version. 9 * option) any later version.
12 * 10 *
13 * This program is distributed in the hope that it will be useful, 11 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details. 14 * GNU General Public License for more details.
17 * 15 *
18 * You should have received a copy of the GNU General Public License 16 * You should have received a copy of the Affero GNU General Public License
19 * along with this program; if not, write to the Free Software 17 * and the GNU General Public License along with this program. If not, see
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 18 * <http://www.gnu.org/licenses/>.
21 * 19 *
22 * The authors can be reached via e-mail at <crossfire@schmorp.de> 20 * The authors can be reached via e-mail to <support@deliantra.net>
23 */ 21 */
24 22
25/* 23/*
26 * General convenience functions for crossfire. 24 * General convenience functions for deliantra.
27 */ 25 */
28 26
29#include <cstdlib> 27#include <cstdlib>
30#include <sys/types.h> 28#include <sys/types.h>
31#include <unistd.h> 29#include <unistd.h>
32#include <sys/time.h> 30#include <sys/time.h>
33#include <time.h> 31#include <time.h>
34#include <signal.h> 32#include <signal.h>
35 33
36#include <global.h> 34#include <global.h>
37#include <funcpoint.h>
38#include <material.h> 35#include <material.h>
36#include <object.h>
37
38#include <sys/time.h>
39#include <sys/resource.h>
39 40
40#include <glib.h> 41#include <glib.h>
41 42
42/* 43refcnt_base::refcnt_t refcnt_dummy;
43 * The random functions here take luck into account when rolling random 44ssize_t slice_alloc;
44 * dice or numbers. This function has less of an impact the larger the 45
45 * difference becomes in the random numbers. IE, the effect is lessened 46#if !GCC_VERSION(3,4)
46 * on a 1-1000 roll, vs a 1-6 roll. This can be used by crafty programmers, 47int least_significant_bit (uint32_t x)
47 * to specifically disable luck in certain rolls, simply by making the 48{
48 * numbers larger (ie, 1d1000 > 500 vs 1d6 > 3) 49 x &= -x; // this isolates the lowest bit
50
51 int r = 0;
52
53 if (x & 0xaaaaaaaa) r += 1;
54 if (x & 0xcccccccc) r += 2;
55 if (x & 0xf0f0f0f0) r += 4;
56 if (x & 0xff00ff00) r += 8;
57 if (x & 0xffff0000) r += 16;
58
59 return r;
60}
61#endif
62
63/******************************************************************************/
64
65/* Checks a player-provided string which will become the msg property of
66 * an object for dangerous input.
49 */ 67 */
50 68bool
51/* 69msg_is_safe (const char *msg)
52 * Roll a random number between min and max. Uses op to determine luck,
53 * and if goodbad is non-zero, luck increases the roll, if zero, it decreases.
54 * Generally, op should be the player/caster/hitter requesting the roll,
55 * not the recipient (ie, the poor slob getting hit). [garbled 20010916]
56 */
57
58int
59random_roll (int min, int max, const object *op, int goodbad)
60{ 70{
61 int omin, diff, luck, base, ran; 71 bool safe = true;
62 72
63 omin = min; 73 /* Trying to cheat by getting data into the object */
64 diff = max - min + 1; 74 if (!strncmp (msg, "endmsg", sizeof ("endmsg") - 1)
65 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */ 75 || strstr (msg, "\nendmsg"))
76 safe = false;
66 77
67 if (max < 1 || diff < 1) 78 /* Trying to make the object talk, and potentially access arbitrary code */
68 { 79 if (object::msg_has_dialogue (msg))
69 LOG (llevError, "Calling random_roll with min=%d max=%d\n", min, max); 80 safe = false;
70 return (min); /* avoids a float exception */
71 }
72 81
73 ran = RANDOM ();
74
75 if (op->type != PLAYER)
76 return ((ran % diff) + min);
77
78 luck = op->stats.luck;
79 if (RANDOM () % base < MIN (10, abs (luck)))
80 {
81 /* we have a winner */
82 ((luck > 0) ? (luck = 1) : (luck = -1));
83 diff -= luck;
84 if (diff < 1)
85 return (omin); /*check again */
86 ((goodbad) ? (min += luck) : (diff));
87
88 return (MAX (omin, MIN (max, (ran % diff) + min)));
89 }
90 return ((ran % diff) + min);
91}
92
93/*
94 * This is a 64 bit version of random_roll above. This is needed
95 * for exp loss calculations for players changing religions.
96 */
97
98sint64
99random_roll64 (sint64 min, sint64 max, const object *op, int goodbad)
100{
101 sint64 omin, diff, luck, ran;
102 int base;
103
104 omin = min;
105 diff = max - min + 1;
106 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */
107
108 if (max < 1 || diff < 1)
109 {
110 LOG (llevError, "Calling random_roll with min=%" PRId64 " max=%" PRId64 "\n", min, max);
111 return (min); /* avoids a float exception */
112 }
113
114 /* Don't know of a portable call to get 64 bit random values.
115 * So make a call to get two 32 bit random numbers, and just to
116 * a little byteshifting. Do make sure the first one is only
117 * 32 bit, so we don't get skewed results
118 */
119 ran = (RANDOM () & 0xffffffff) | ((sint64) RANDOM () << 32);
120
121 if (op->type != PLAYER)
122 return ((ran % diff) + min);
123
124 luck = op->stats.luck;
125 if (RANDOM () % base < MIN (10, abs (luck)))
126 {
127 /* we have a winner */
128 ((luck > 0) ? (luck = 1) : (luck = -1));
129 diff -= luck;
130 if (diff < 1)
131 return (omin); /*check again */
132 ((goodbad) ? (min += luck) : (diff));
133
134 return (MAX (omin, MIN (max, (ran % diff) + min)));
135 }
136 return ((ran % diff) + min);
137}
138
139/*
140 * Roll a number of dice (2d3, 4d6). Uses op to determine luck,
141 * If goodbad is non-zero, luck increases the roll, if zero, it decreases.
142 * Generally, op should be the player/caster/hitter requesting the roll,
143 * not the recipient (ie, the poor slob getting hit).
144 * The args are num D size (ie 4d6) [garbled 20010916]
145 */
146
147int
148die_roll (int num, int size, const object *op, int goodbad)
149{
150 int min, diff, luck, total, i, gotlucky, base, ran;
151
152 diff = size;
153 min = 1;
154 luck = total = gotlucky = 0;
155 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */
156 if (size < 2 || diff < 1)
157 {
158 LOG (llevError, "Calling die_roll with num=%d size=%d\n", num, size);
159 return (num); /* avoids a float exception */
160 }
161
162 if (op->type == PLAYER)
163 luck = op->stats.luck;
164
165 for (i = 0; i < num; i++)
166 {
167 if (RANDOM () % base < MIN (10, abs (luck)) && !gotlucky)
168 {
169 /* we have a winner */
170 gotlucky++;
171 ((luck > 0) ? (luck = 1) : (luck = -1));
172 diff -= luck;
173 if (diff < 1)
174 return (num); /*check again */
175 ((goodbad) ? (min += luck) : (diff));
176 ran = RANDOM ();
177 total += MAX (1, MIN (size, (ran % diff) + min));
178 }
179 else
180 {
181 total += RANDOM () % size + 1;
182 }
183 }
184 return (total);
185}
186
187/*
188 * Another convenience function. Returns a number between min and max.
189 * It is suggested one use these functions rather than RANDOM()%, as it
190 * would appear that a number of off-by-one-errors exist due to improper
191 * use of %. This should also prevent SIGFPE.
192 */
193
194int
195rndm (int min, int max)
196{
197 int diff;
198
199 diff = max - min + 1;
200 if (max < 1 || diff < 1)
201 return (min);
202
203 return (RANDOM () % diff + min);
204}
205
206/* decay and destroy perishable items in a map */
207void
208maptile::decay_objects ()
209{
210 if (!spaces)
211 return;
212
213 for (mapspace *ms = spaces + size (); ms-- > spaces; )
214 for (object *above, *op = ms->bot; op; op = above)
215 {
216 above = op->above;
217
218 bool destroy = 0;
219
220 // do not decay anything above unique floor tiles (yet :)
221 if (QUERY_FLAG (op, FLAG_IS_FLOOR) && QUERY_FLAG (op, FLAG_UNIQUE))
222 break;
223
224 if (QUERY_FLAG (op, FLAG_IS_FLOOR)
225 || QUERY_FLAG (op, FLAG_OBJ_ORIGINAL)
226 || QUERY_FLAG (op, FLAG_OBJ_SAVE_ON_OVL)
227 || QUERY_FLAG (op, FLAG_UNIQUE)
228 || QUERY_FLAG (op, FLAG_OVERLAY_FLOOR)
229 || QUERY_FLAG (op, FLAG_UNPAID)
230 || op->is_alive ())
231 ; // do not decay
232 else if (op->is_weapon ())
233 {
234 op->stats.dam--;
235 if (op->stats.dam < 0)
236 destroy = 1;
237 }
238 else if (op->is_armor ())
239 {
240 op->stats.ac--;
241 if (op->stats.ac < 0)
242 destroy = 1;
243 }
244 else if (op->type == FOOD)
245 {
246 op->stats.food -= rndm (5, 20);
247 if (op->stats.food < 0)
248 destroy = 1;
249 }
250 else
251 {
252 int mat = op->material;
253
254 if (mat & M_PAPER
255 || mat & M_LEATHER
256 || mat & M_WOOD
257 || mat & M_ORGANIC
258 || mat & M_CLOTH
259 || mat & M_LIQUID
260 || (mat & M_IRON && rndm (1, 5) == 1)
261 || (mat & M_GLASS && rndm (1, 2) == 1)
262 || ((mat & M_STONE || mat & M_ADAMANT) && rndm (1, 10) == 1)
263 || ((mat & M_SOFT_METAL || mat & M_BONE) && rndm (1, 3) == 1)
264 || (mat & M_ICE && temp > 32))
265 destroy = 1;
266 }
267
268 /* adjust overall chance below */
269 if (destroy && rndm (0, 1))
270 op->destroy ();
271 }
272}
273
274/* convert materialname to materialtype_t */
275
276materialtype_t *
277name_to_material (const char *name)
278{
279 materialtype_t *mt, *nmt;
280
281 mt = NULL;
282 for (nmt = materialt; nmt != NULL && nmt->next != NULL; nmt = nmt->next)
283 {
284 if (strcmp (name, nmt->name) == 0)
285 {
286 mt = nmt;
287 break;
288 }
289 }
290 return mt;
291}
292
293/* when doing transmutation of objects, we have to recheck the resistances,
294 * as some that did not apply previously, may apply now.
295 */
296
297void
298transmute_materialname (object *op, const object *change)
299{
300 materialtype_t *mt;
301 int j;
302
303 if (op->materialname == NULL)
304 return;
305
306 if (change->materialname != NULL && strcmp (op->materialname, change->materialname))
307 return;
308
309 if (!op->is_armor ())
310 return;
311
312 mt = name_to_material (op->materialname);
313 if (!mt)
314 {
315 LOG (llevError, "archetype '%s>%s' uses nonexistent material '%s'\n", &op->arch->name, &op->name, &op->materialname);
316 return;
317 }
318
319 for (j = 0; j < NROFATTACKS; j++)
320 if (op->resist[j] == 0 && change->resist[j] != 0)
321 {
322 op->resist[j] += mt->mod[j];
323 if (op->resist[j] > 100)
324 op->resist[j] = 100;
325 if (op->resist[j] < -100)
326 op->resist[j] = -100;
327 }
328}
329
330/* set the materialname and type for an item */
331void
332set_materialname (object *op, int difficulty, materialtype_t *nmt)
333{
334 materialtype_t *mt, *lmt;
335
336#ifdef NEW_MATERIAL_CODE
337 int j;
338#endif
339
340 if (op->materialname != NULL)
341 return;
342
343
344
345 if (nmt == NULL)
346 {
347 lmt = NULL;
348#ifndef NEW_MATERIAL_CODE
349 for (mt = materialt; mt != NULL && mt->next != NULL; mt = mt->next)
350 {
351 if (op->material & mt->material)
352 {
353 lmt = mt;
354 break;
355 }
356 }
357
358#else
359 for (mt = materialt; mt != NULL && mt->next != NULL; mt = mt->next)
360 {
361 if (op->material & mt->material && rndm (1, 100) <= mt->chance &&
362 difficulty >= mt->difficulty && (op->magic >= mt->magic || mt->magic == 0))
363 {
364 lmt = mt;
365 if (!(op->is_weapon () || op->is_armor ()))
366 break;
367 }
368 }
369#endif
370 }
371 else
372 {
373 lmt = nmt;
374 }
375
376 if (lmt != NULL)
377 {
378#ifndef NEW_MATERIAL_CODE
379 op->materialname = lmt->name;
380 return;
381#else
382
383 if (op->stats.dam && op->is_weapon ())
384 {
385 op->stats.dam += lmt->damage;
386 if (op->stats.dam < 1)
387 op->stats.dam = 1;
388 }
389 if (op->stats.sp && op->type == BOW)
390 op->stats.sp += lmt->sp;
391 if (op->stats.wc && op->is_weapon ())
392 op->stats.wc += lmt->wc;
393 if (op->is_armor ())
394 {
395 if (op->stats.ac)
396 op->stats.ac += lmt->ac;
397 for (j = 0; j < NROFATTACKS; j++)
398 if (op->resist[j] != 0)
399 {
400 op->resist[j] += lmt->mod[j];
401 if (op->resist[j] > 100)
402 op->resist[j] = 100;
403 if (op->resist[j] < -100)
404 op->resist[j] = -100;
405 }
406 }
407 op->materialname = add_string (lmt->name);
408 /* dont make it unstackable if it doesn't need to be */
409 if (op->is_weapon () || op->is_armor ())
410 {
411 op->weight = (op->weight * lmt->weight) / 100;
412 op->value = (op->value * lmt->value) / 100;
413 }
414#endif
415 }
416}
417
418/*
419 * Strip out the media tags from a String.
420 * Warning the input string will contain the result string
421 */
422void
423strip_media_tag (char *message)
424{
425 int in_tag = 0;
426 char *dest;
427 char *src;
428
429 src = dest = message;
430 while (*src != '\0')
431 {
432 if (*src == '[')
433 {
434 in_tag = 1;
435 }
436 else if (in_tag && (*src == ']'))
437 in_tag = 0;
438 else if (!in_tag)
439 {
440 *dest = *src;
441 dest++;
442 }
443 src++;
444 }
445 *dest = '\0';
446}
447
448const char *
449strrstr (const char *haystack, const char *needle)
450{
451 const char *lastneedle;
452
453 lastneedle = NULL;
454 while ((haystack = strstr (haystack, needle)) != NULL)
455 {
456 lastneedle = haystack;
457 haystack++;
458 }
459 return lastneedle;
460
461}
462
463#define EOL_SIZE (sizeof("\n")-1)
464void
465strip_endline (char *buf)
466{
467 if (strlen (buf) < sizeof ("\n"))
468 {
469 return;
470 }
471 if (!strcmp (buf + strlen (buf) - EOL_SIZE, "\n"))
472 buf[strlen (buf) - EOL_SIZE] = '\0';
473}
474
475/**
476 * Replace in string src all occurrences of key by replacement. The resulting
477 * string is put into result; at most resultsize characters (including the
478 * terminating null character) will be written to result.
479 */
480void
481replace (const char *src, const char *key, const char *replacement, char *result, size_t resultsize)
482{
483 size_t resultlen;
484 size_t keylen;
485
486 /* special case to prevent infinite loop if key==replacement=="" */
487 if (strcmp (key, replacement) == 0)
488 {
489 snprintf (result, resultsize, "%s", src);
490 return;
491 }
492
493 keylen = strlen (key);
494
495 resultlen = 0;
496 while (*src != '\0' && resultlen + 1 < resultsize)
497 {
498 if (strncmp (src, key, keylen) == 0)
499 {
500 snprintf (result + resultlen, resultsize - resultlen, "%s", replacement);
501 resultlen += strlen (result + resultlen);
502 src += keylen;
503 }
504 else
505 {
506 result[resultlen++] = *src++;
507 }
508 }
509 result[resultlen] = '\0';
510}
511
512/**
513 * Taking a string as an argument, mutate it into a string that looks like a list.
514 * a 'list' for the purposes here, is a string of items, seperated by commas, except
515 * for the last entry, which has an 'and' before it, and a full stop (period) after it.
516 * This function will also strip all trailing non alphanumeric characters.
517 * It does not insert an oxford comma.
518 */
519
520void
521make_list_like (char *input)
522{
523 char *p, tmp[MAX_BUF];
524 int i;
525
526 if (!input || strlen (input) > MAX_BUF - 5)
527 return;
528 /* bad stuff would happen if we continued here, the -5 is to make space for ' and ' */
529
530 strncpy (tmp, input, MAX_BUF - 5);
531 /*trim all trailing commas, spaces etc. */
532 for (i = strlen (tmp); !isalnum (tmp[i]) && i >= 0; i--)
533 tmp[i] = '\0';
534
535 strcat (tmp, ".");
536
537 p = strrchr (tmp, ',');
538 if (p)
539 {
540 *p = '\0';
541 strcpy (input, tmp);
542 p++;
543 strcat (input, " and");
544 strcat (input, p);
545 }
546 else
547 strcpy (input, tmp);
548
549 return; 82 return safe;
550} 83}
551 84
552///////////////////////////////////////////////////////////////////////////// 85/////////////////////////////////////////////////////////////////////////////
553 86
554void 87void
555fork_abort (const char *msg) 88fork_abort (const char *msg)
556{ 89{
557 if (!fork ()) 90 if (!fork ())
558 { 91 {
92 signal (SIGINT , SIG_IGN);
93 signal (SIGTERM, SIG_IGN);
559 signal (SIGABRT, SIG_DFL); 94 signal (SIGABRT, SIG_IGN);
95
96 signal (SIGSEGV, SIG_DFL);
97 signal (SIGFPE , SIG_DFL);
98#ifdef SIGBUS
99 signal (SIGBUS , SIG_DFL);
100#endif
101 signal (SIGILL , SIG_DFL);
102 signal (SIGTRAP, SIG_DFL);
103
104 // try to put corefiles into a subdirectory, if existing, to allow
105 // an administrator to reduce the I/O load.
106 chdir ("cores");
107
108 // try to detach us from as many external dependencies as possible
109 // as coredumping can take time by closing all fd's.
110 {
111 struct rlimit lim;
112
113 if (getrlimit (RLIMIT_NOFILE, &lim))
114 lim.rlim_cur = 1024;
115
116 for (int i = 0; i < lim.rlim_cur; ++i)
117 close (i);
118 }
119
120 {
121 sigset_t empty;
122 sigemptyset (&empty);
123 sigprocmask (SIG_SETMASK, &empty, 0);
124 }
125
126 // try to coredump with SIGTRAP
127 kill (getpid (), SIGTRAP);
560 abort (); 128 abort ();
561 } 129 }
562 130
563 LOG (llevError, "fork abort: %s\n", msg); 131 LOG (llevError, "fork abort: %s\n", msg);
564} 132}
565 133
134void *
566void *salloc_ (int n) throw (std::bad_alloc) 135salloc_ (int n) throw (std::bad_alloc)
567{ 136{
568 void *ptr = g_slice_alloc (n); 137 void *ptr = g_slice_alloc (n);
569 138
570 if (!ptr) 139 if (!ptr)
571 throw std::bad_alloc (); 140 throw std::bad_alloc ();
572 141
142 slice_alloc += n;
573 return ptr; 143 return ptr;
574} 144}
575 145
146void *
576void *salloc_ (int n, void *src) throw (std::bad_alloc) 147salloc_ (int n, void *src) throw (std::bad_alloc)
577{ 148{
578 void *ptr = salloc_ (n); 149 void *ptr = salloc_ (n);
579 150
580 if (src) 151 if (src)
581 memcpy (ptr, src, n); 152 memcpy (ptr, src, n);
… …
583 memset (ptr, 0, n); 154 memset (ptr, 0, n);
584 155
585 return ptr; 156 return ptr;
586} 157}
587 158
159/******************************************************************************/
160
161#if DEBUG_SALLOC
162
163#define MAGIC 0xa1b2c35543deadLL
164
165void *
166g_slice_alloc (unsigned long size)
167{
168 unsigned long *p = (unsigned long *) (g_slice_alloc)(size + sizeof (unsigned long));
169 *p++ = size ^ MAGIC;
170 //fprintf (stderr, "g_slice_alloc %ld %p\n", size, p);//D
171 return (void *)p;
172}
173
174void *
175g_slice_alloc0 (unsigned long size)
176{
177 return memset (g_slice_alloc (size), 0, size);
178}
179
180void
181g_slice_free1 (unsigned long size, void *ptr)
182{
183 //fprintf (stderr, "g_slice_free %ld %p\n", size, ptr);//D
184 if (expect_true (ptr))
185 {
186 unsigned long *p = (unsigned long *)ptr;
187 unsigned long s = *--p ^ MAGIC;
188
189 if (size != (unsigned long)(*p ^ MAGIC))
190 {
191 LOG (logBacktrace | llevError, "slice free size (%lx) doesn't match alloc size (%lx)\n", size, s);
192 abort ();
193 }
194
195 *p = MAGIC;
196
197 (g_slice_free1)(s + sizeof (unsigned long), p);
198 }
199}
200
201#endif
202
203/******************************************************************************/
204
205refcnt_buf::refcnt_buf (size_t size)
206{
207 static uint32_t empty_buf [2] = { 0, 1 }; // 2 == never deallocated
208 data = (char *)empty_buf + overhead;
209 assert (overhead == sizeof (empty_buf));
210 inc ();
211}
212
213refcnt_buf::refcnt_buf (void *data, size_t size)
214{
215 _alloc (size);
216 memcpy (this->data, data, size);
217}
218
219refcnt_buf::~refcnt_buf ()
220{
221 dec ();
222}
223
224void
225refcnt_buf::_dealloc ()
226{
227 sfree<char> (data - overhead, size () + overhead);
228}
229
230refcnt_buf &
231refcnt_buf::operator =(const refcnt_buf &src)
232{
233 dec ();
234 data = src.data;
235 inc ();
236 return *this;
237}
238
239/******************************************************************************/
240
241int
588void assign (char *dst, const char *src, int maxlen) 242assign (char *dst, const char *src, int maxsize)
589{ 243{
590 if (!src) 244 if (!src)
591 src = ""; 245 src = "";
592 246
593 int len = strlen (src); 247 int len = strlen (src);
594 248
595 if (len >= maxlen - 1) 249 if (len >= maxsize)
596 { 250 {
597 if (maxlen <= 4) 251 if (maxsize <= 4)
598 { 252 {
599 memset (dst, '.', maxlen - 1); 253 memset (dst, '.', maxsize - 2);
600 dst [maxlen - 1] = 0; 254 dst [maxsize - 1] = 0;
601 } 255 }
602 else 256 else
603 { 257 {
604 memcpy (dst, src, maxlen - 4); 258 memcpy (dst, src, maxsize - 4);
605 memcpy (dst + maxlen - 4, "...", 4); 259 memcpy (dst + maxsize - 4, "...", 4);
606 } 260 }
261
262 len = maxsize;
607 } 263 }
608 else 264 else
609 memcpy (dst, src, len + 1); 265 memcpy (dst, src, ++len);
610}
611 266
612tstamp now () 267 return len;
268}
269
270char *
271vformat (const char *format, va_list ap)
272{
273 static dynbuf_text bufs[8];
274 static int bufidx;
275
276 dynbuf_text &buf = bufs [++bufidx & 7];
277
278 buf.clear ();
279 buf.vprintf (format, ap);
280 return buf;
281}
282
283char *
284format (const char *format, ...)
285{
286 va_list ap;
287 va_start (ap, format);
288 char *buf = vformat (format, ap);
289 va_end (ap);
290
291 return buf;
292}
293
294tstamp
295now ()
613{ 296{
614 struct timeval tv; 297 struct timeval tv;
615 298
616 gettimeofday (&tv, 0); 299 gettimeofday (&tv, 0);
617 return tstamp (tv.tv_sec) + tstamp (tv.tv_usec) * tstamp (1e-6); 300 return tstamp (tv.tv_sec) + tstamp (tv.tv_usec) * tstamp (1e-6);
… …
625 308
626 int diff = (b - a) & 7; 309 int diff = (b - a) & 7;
627 return diff <= 1 || diff >= 7; 310 return diff <= 1 || diff >= 7;
628} 311}
629 312
313/* crc32 0xdebb20e3 table and supplementary functions. */
314extern const uint32_t crc_32_tab[256] =
315{
316 0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,
317 0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,
318 0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,
319 0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,
320 0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,
321 0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,
322 0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,
323 0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,
324 0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,
325 0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,
326 0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,
327 0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,
328 0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,
329 0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,
330 0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,
331 0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,
332 0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,
333 0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,
334 0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,
335 0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,
336 0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,
337 0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,
338 0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,
339 0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,
340 0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,
341 0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,
342 0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,
343 0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,
344 0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,
345 0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,
346 0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,
347 0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,
348 0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,
349 0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,
350 0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,
351 0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,
352 0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,
353 0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,
354 0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,
355 0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,
356 0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,
357 0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,
358 0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,
359 0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,
360 0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,
361 0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,
362 0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,
363 0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,
364 0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,
365 0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,
366 0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,
367 0x2d02ef8dL
368};
369
370void
371thread::start (void *(*start_routine)(void *), void *arg)
372{
373 pthread_attr_t attr;
374
375 pthread_attr_init (&attr);
376 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
377 pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN < sizeof (long) * 4096
378 ? sizeof (long) * 4096 : PTHREAD_STACK_MIN);
379#ifdef PTHREAD_SCOPE_PROCESS
380 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
381#endif
382
383 sigset_t fullsigset, oldsigset;
384 sigfillset (&fullsigset);
385
386 pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
387
388 if (pthread_create (&id, &attr, start_routine, arg))
389 cleanup ("unable to create a new thread");
390
391 pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
392}
393

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