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Comparing deliantra/server/common/utils.C (file contents):
Revision 1.36 by pippijn, Sat Jan 6 14:42:29 2007 UTC vs.
Revision 1.108 by root, Sat Nov 17 23:40:00 2018 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 (©) 2017,2018 Marc Alexander Lehmann / the Deliantra team
5 Copyright (C) 2002 Mark Wedel & Crossfire Development Team 5 * Copyright (©) 2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
6 Copyright (C) 1992 Frank Tore Johansen 6 *
7 7 * Deliantra is free software: you can redistribute it and/or modify it under
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by 8 * 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 9 * Free Software Foundation, either version 3 of the License, or (at your
11 (at your option) any later version. 10 * option) any later version.
12 11 *
13 This program is distributed in the hope that it will be useful, 12 * This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details. 15 * GNU General Public License for more details.
17 16 *
18 You should have received a copy of the GNU General Public License 17 * 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 18 * and the GNU General Public License along with this program. If not, see
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 19 * <http://www.gnu.org/licenses/>.
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 deliantra.
27 */ 26 */
28 27
29#include <global.h> 28#include <cstdlib>
29#include <sys/types.h>
30#include <funcpoint.h> 30#include <unistd.h>
31#include <material.h>
32
33#include <sys/time.h> 31#include <sys/time.h>
34#include <time.h> 32#include <time.h>
33#include <signal.h>
34
35#include <global.h>
36#include <material.h>
37#include <object.h>
38
39#include <sys/time.h>
40#include <sys/resource.h>
41
35#include <glib.h> 42#include <glib.h>
36 43
37/* 44refcnt_base::refcnt_t refcnt_dummy;
38 * The random functions here take luck into account when rolling random 45ssize_t slice_alloc;
39 * dice or numbers. This function has less of an impact the larger the 46
40 * difference becomes in the random numbers. IE, the effect is lessened 47/******************************************************************************/
41 * on a 1-1000 roll, vs a 1-6 roll. This can be used by crafty programmers, 48
42 * to specifically disable luck in certain rolls, simply by making the 49/* Checks a player-provided string which will become the msg property of
43 * numbers larger (ie, 1d1000 > 500 vs 1d6 > 3) 50 * an object for dangerous input.
44 */ 51 */
45 52bool
46/* 53msg_is_safe (const char *msg)
47 * Roll a random number between min and max. Uses op to determine luck,
48 * and if goodbad is non-zero, luck increases the roll, if zero, it decreases.
49 * Generally, op should be the player/caster/hitter requesting the roll,
50 * not the recipient (ie, the poor slob getting hit). [garbled 20010916]
51 */
52
53int
54random_roll (int min, int max, const object *op, int goodbad)
55{ 54{
56 int omin, diff, luck, base, ran; 55 bool safe = true;
57 56
58 omin = min; 57 /* Trying to cheat by getting data into the object */
59 diff = max - min + 1; 58 if (!strncmp (msg, "endmsg", sizeof ("endmsg") - 1)
60 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */ 59 || strstr (msg, "\nendmsg"))
60 safe = false;
61 61
62 if (max < 1 || diff < 1) 62 /* Trying to make the object talk, and potentially access arbitrary code */
63 if (object::msg_has_dialogue (msg))
64 safe = false;
65
66 return safe;
67}
68
69/////////////////////////////////////////////////////////////////////////////
70
71void
72fork_abort (const char *msg)
73{
74 if (!fork ())
63 { 75 {
64 LOG (llevError, "Calling random_roll with min=%d max=%d\n", min, max); 76 signal (SIGINT , SIG_IGN);
65 return (min); /* avoids a float exception */ 77 signal (SIGTERM, SIG_IGN);
78 signal (SIGABRT, SIG_IGN);
79
80 signal (SIGSEGV, SIG_DFL);
81 signal (SIGFPE , SIG_DFL);
82#ifdef SIGBUS
83 signal (SIGBUS , SIG_DFL);
84#endif
85 signal (SIGILL , SIG_DFL);
86 signal (SIGTRAP, SIG_DFL);
87
88 // try to put corefiles into a subdirectory, if existing, to allow
89 // an administrator to reduce the I/O load.
90 chdir ("cores");
91
92 // try to detach us from as many external dependencies as possible
93 // as coredumping can take time by closing all fd's.
94 {
95 struct rlimit lim;
96
97 if (getrlimit (RLIMIT_NOFILE, &lim))
98 lim.rlim_cur = 1024;
99
100 for (int i = 0; i < lim.rlim_cur; ++i)
101 close (i);
102 }
103
104 {
105 sigset_t empty;
106 sigemptyset (&empty);
107 sigprocmask (SIG_SETMASK, &empty, 0);
108 }
109
110 // try to coredump with SIGTRAP
111 kill (getpid (), SIGTRAP);
112 abort ();
66 } 113 }
67 114
68 ran = RANDOM (); 115 LOG (llevError, "fork abort: %s\n", msg);
69
70 if (op->type != PLAYER)
71 return ((ran % diff) + min);
72
73 luck = op->stats.luck;
74 if (RANDOM () % base < MIN (10, abs (luck)))
75 {
76 /* we have a winner */
77 ((luck > 0) ? (luck = 1) : (luck = -1));
78 diff -= luck;
79 if (diff < 1)
80 return (omin); /*check again */
81 ((goodbad) ? (min += luck) : (diff));
82
83 return (MAX (omin, MIN (max, (ran % diff) + min)));
84 }
85 return ((ran % diff) + min);
86} 116}
87 117
88/*
89 * This is a 64 bit version of random_roll above. This is needed
90 * for exp loss calculations for players changing religions.
91 */
92
93sint64
94random_roll64 (sint64 min, sint64 max, const object *op, int goodbad)
95{
96 sint64 omin, diff, luck, ran;
97 int base;
98
99 omin = min;
100 diff = max - min + 1;
101 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */
102
103 if (max < 1 || diff < 1)
104 {
105 LOG (llevError, "Calling random_roll with min=%" PRId64 " max=%" PRId64 "\n", min, max);
106 return (min); /* avoids a float exception */
107 }
108
109 /* Don't know of a portable call to get 64 bit random values.
110 * So make a call to get two 32 bit random numbers, and just to
111 * a little byteshifting. Do make sure the first one is only
112 * 32 bit, so we don't get skewed results
113 */
114 ran = (RANDOM () & 0xffffffff) | ((sint64) RANDOM () << 32);
115
116 if (op->type != PLAYER)
117 return ((ran % diff) + min);
118
119 luck = op->stats.luck;
120 if (RANDOM () % base < MIN (10, abs (luck)))
121 {
122 /* we have a winner */
123 ((luck > 0) ? (luck = 1) : (luck = -1));
124 diff -= luck;
125 if (diff < 1)
126 return (omin); /*check again */
127 ((goodbad) ? (min += luck) : (diff));
128
129 return (MAX (omin, MIN (max, (ran % diff) + min)));
130 }
131 return ((ran % diff) + min);
132}
133
134/*
135 * Roll a number of dice (2d3, 4d6). Uses op to determine luck,
136 * If goodbad is non-zero, luck increases the roll, if zero, it decreases.
137 * Generally, op should be the player/caster/hitter requesting the roll,
138 * not the recipient (ie, the poor slob getting hit).
139 * The args are num D size (ie 4d6) [garbled 20010916]
140 */
141
142int
143die_roll (int num, int size, const object *op, int goodbad)
144{
145 int min, diff, luck, total, i, gotlucky, base, ran;
146
147 diff = size;
148 min = 1;
149 luck = total = gotlucky = 0;
150 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */
151 if (size < 2 || diff < 1)
152 {
153 LOG (llevError, "Calling die_roll with num=%d size=%d\n", num, size);
154 return (num); /* avoids a float exception */
155 }
156
157 if (op->type == PLAYER)
158 luck = op->stats.luck;
159
160 for (i = 0; i < num; i++)
161 {
162 if (RANDOM () % base < MIN (10, abs (luck)) && !gotlucky)
163 {
164 /* we have a winner */
165 gotlucky++;
166 ((luck > 0) ? (luck = 1) : (luck = -1));
167 diff -= luck;
168 if (diff < 1)
169 return (num); /*check again */
170 ((goodbad) ? (min += luck) : (diff));
171 ran = RANDOM ();
172 total += MAX (1, MIN (size, (ran % diff) + min));
173 }
174 else
175 {
176 total += RANDOM () % size + 1;
177 }
178 }
179 return (total);
180}
181
182/*
183 * Another convenience function. Returns a number between min and max.
184 * It is suggested one use these functions rather than RANDOM()%, as it
185 * would appear that a number of off-by-one-errors exist due to improper
186 * use of %. This should also prevent SIGFPE.
187 */
188
189int
190rndm (int min, int max)
191{
192 int diff;
193
194 diff = max - min + 1;
195 if (max < 1 || diff < 1)
196 return (min);
197
198 return (RANDOM () % diff + min);
199}
200
201/* decay and destroy perishable items in a map */
202void 118void *
203maptile::decay_objects () 119salloc_ (int n)
204{
205 if (!spaces)
206 return;
207
208 for (mapspace *ms = spaces + size (); ms-- > spaces; )
209 for (object *above, *op = ms->bot; op; op = above)
210 {
211 above = op->above;
212
213 bool destroy = 0;
214
215 // do not decay anything above unique floor tiles (yet :)
216 if (QUERY_FLAG (op, FLAG_IS_FLOOR) && QUERY_FLAG (op, FLAG_UNIQUE))
217 break;
218
219 if (QUERY_FLAG (op, FLAG_IS_FLOOR)
220 || QUERY_FLAG (op, FLAG_OBJ_ORIGINAL)
221 || QUERY_FLAG (op, FLAG_OBJ_SAVE_ON_OVL)
222 || QUERY_FLAG (op, FLAG_UNIQUE)
223 || QUERY_FLAG (op, FLAG_OVERLAY_FLOOR)
224 || QUERY_FLAG (op, FLAG_UNPAID)
225 || op->is_alive ())
226 ; // do not decay
227 else if (op->is_weapon ())
228 {
229 op->stats.dam--;
230 if (op->stats.dam < 0)
231 destroy = 1;
232 }
233 else if (op->is_armor ())
234 {
235 op->stats.ac--;
236 if (op->stats.ac < 0)
237 destroy = 1;
238 }
239 else if (op->type == FOOD)
240 {
241 op->stats.food -= rndm (5, 20);
242 if (op->stats.food < 0)
243 destroy = 1;
244 }
245 else
246 {
247 int mat = op->material;
248
249 if (mat & M_PAPER
250 || mat & M_LEATHER
251 || mat & M_WOOD
252 || mat & M_ORGANIC
253 || mat & M_CLOTH
254 || mat & M_LIQUID
255 || (mat & M_IRON && rndm (1, 5) == 1)
256 || (mat & M_GLASS && rndm (1, 2) == 1)
257 || ((mat & M_STONE || mat & M_ADAMANT) && rndm (1, 10) == 1)
258 || ((mat & M_SOFT_METAL || mat & M_BONE) && rndm (1, 3) == 1)
259 || (mat & M_ICE && temp > 32))
260 destroy = 1;
261 }
262
263 /* adjust overall chance below */
264 if (destroy && rndm (0, 1))
265 op->destroy ();
266 }
267}
268
269/* convert materialname to materialtype_t */
270
271materialtype_t *
272name_to_material (const char *name)
273{
274 materialtype_t *mt, *nmt;
275
276 mt = NULL;
277 for (nmt = materialt; nmt != NULL && nmt->next != NULL; nmt = nmt->next)
278 {
279 if (strcmp (name, nmt->name) == 0)
280 {
281 mt = nmt;
282 break;
283 }
284 }
285 return mt;
286}
287
288/* when doing transmutation of objects, we have to recheck the resistances,
289 * as some that did not apply previously, may apply now.
290 */
291
292void
293transmute_materialname (object *op, const object *change)
294{
295 materialtype_t *mt;
296 int j;
297
298 if (op->materialname == NULL)
299 return;
300
301 if (change->materialname != NULL && strcmp (op->materialname, change->materialname))
302 return;
303
304 if (!op->is_armor ())
305 return;
306
307 mt = name_to_material (op->materialname);
308 if (!mt)
309 {
310 LOG (llevError, "archetype '%s>%s' uses nonexistent material '%s'\n", &op->arch->name, &op->name, &op->materialname);
311 return;
312 }
313
314 for (j = 0; j < NROFATTACKS; j++)
315 if (op->resist[j] == 0 && change->resist[j] != 0)
316 {
317 op->resist[j] += mt->mod[j];
318 if (op->resist[j] > 100)
319 op->resist[j] = 100;
320 if (op->resist[j] < -100)
321 op->resist[j] = -100;
322 }
323}
324
325/* set the materialname and type for an item */
326void
327set_materialname (object *op, int difficulty, materialtype_t *nmt)
328{
329 materialtype_t *mt, *lmt;
330
331#ifdef NEW_MATERIAL_CODE
332 int j;
333#endif
334
335 if (op->materialname != NULL)
336 return;
337
338
339
340 if (nmt == NULL)
341 {
342 lmt = NULL;
343#ifndef NEW_MATERIAL_CODE
344 for (mt = materialt; mt != NULL && mt->next != NULL; mt = mt->next)
345 {
346 if (op->material & mt->material)
347 {
348 lmt = mt;
349 break;
350 }
351 }
352
353#else
354 for (mt = materialt; mt != NULL && mt->next != NULL; mt = mt->next)
355 {
356 if (op->material & mt->material && rndm (1, 100) <= mt->chance &&
357 difficulty >= mt->difficulty && (op->magic >= mt->magic || mt->magic == 0))
358 {
359 lmt = mt;
360 if (!(op->is_weapon () || op->is_armor ()))
361 break;
362 }
363 }
364#endif
365 }
366 else
367 {
368 lmt = nmt;
369 }
370
371 if (lmt != NULL)
372 {
373#ifndef NEW_MATERIAL_CODE
374 op->materialname = lmt->name;
375 return;
376#else
377
378 if (op->stats.dam && op->is_weapon ())
379 {
380 op->stats.dam += lmt->damage;
381 if (op->stats.dam < 1)
382 op->stats.dam = 1;
383 }
384 if (op->stats.sp && op->type == BOW)
385 op->stats.sp += lmt->sp;
386 if (op->stats.wc && op->is_weapon ())
387 op->stats.wc += lmt->wc;
388 if (op->is_armor ())
389 {
390 if (op->stats.ac)
391 op->stats.ac += lmt->ac;
392 for (j = 0; j < NROFATTACKS; j++)
393 if (op->resist[j] != 0)
394 {
395 op->resist[j] += lmt->mod[j];
396 if (op->resist[j] > 100)
397 op->resist[j] = 100;
398 if (op->resist[j] < -100)
399 op->resist[j] = -100;
400 }
401 }
402 op->materialname = add_string (lmt->name);
403 /* dont make it unstackable if it doesn't need to be */
404 if (op->is_weapon () || op->is_armor ())
405 {
406 op->weight = (op->weight * lmt->weight) / 100;
407 op->value = (op->value * lmt->value) / 100;
408 }
409#endif
410 }
411}
412
413/*
414 * Strip out the media tags from a String.
415 * Warning the input string will contain the result string
416 */
417void
418strip_media_tag (char *message)
419{
420 int in_tag = 0;
421 char *dest;
422 char *src;
423
424 src = dest = message;
425 while (*src != '\0')
426 {
427 if (*src == '[')
428 {
429 in_tag = 1;
430 }
431 else if (in_tag && (*src == ']'))
432 in_tag = 0;
433 else if (!in_tag)
434 {
435 *dest = *src;
436 dest++;
437 }
438 src++;
439 }
440 *dest = '\0';
441}
442
443const char *
444strrstr (const char *haystack, const char *needle)
445{
446 const char *lastneedle;
447
448 lastneedle = NULL;
449 while ((haystack = strstr (haystack, needle)) != NULL)
450 {
451 lastneedle = haystack;
452 haystack++;
453 }
454 return lastneedle;
455
456}
457
458#define EOL_SIZE (sizeof("\n")-1)
459void
460strip_endline (char *buf)
461{
462 if (strlen (buf) < sizeof ("\n"))
463 {
464 return;
465 }
466 if (!strcmp (buf + strlen (buf) - EOL_SIZE, "\n"))
467 buf[strlen (buf) - EOL_SIZE] = '\0';
468}
469
470/**
471 * Replace in string src all occurrences of key by replacement. The resulting
472 * string is put into result; at most resultsize characters (including the
473 * terminating null character) will be written to result.
474 */
475void
476replace (const char *src, const char *key, const char *replacement, char *result, size_t resultsize)
477{
478 size_t resultlen;
479 size_t keylen;
480
481 /* special case to prevent infinite loop if key==replacement=="" */
482 if (strcmp (key, replacement) == 0)
483 {
484 snprintf (result, resultsize, "%s", src);
485 return;
486 }
487
488 keylen = strlen (key);
489
490 resultlen = 0;
491 while (*src != '\0' && resultlen + 1 < resultsize)
492 {
493 if (strncmp (src, key, keylen) == 0)
494 {
495 snprintf (result + resultlen, resultsize - resultlen, "%s", replacement);
496 resultlen += strlen (result + resultlen);
497 src += keylen;
498 }
499 else
500 {
501 result[resultlen++] = *src++;
502 }
503 }
504 result[resultlen] = '\0';
505}
506
507/**
508 * Taking a string as an argument, mutate it into a string that looks like a list.
509 * a 'list' for the purposes here, is a string of items, seperated by commas, except
510 * for the last entry, which has an 'and' before it, and a full stop (period) after it.
511 * This function will also strip all trailing non alphanumeric characters.
512 * It does not insert an oxford comma.
513 */
514
515void
516make_list_like (char *input)
517{
518 char *p, tmp[MAX_BUF];
519 int i;
520
521 if (!input || strlen (input) > MAX_BUF - 5)
522 return;
523 /* bad stuff would happen if we continued here, the -5 is to make space for ' and ' */
524
525 strncpy (tmp, input, MAX_BUF - 5);
526 /*trim all trailing commas, spaces etc. */
527 for (i = strlen (tmp); !isalnum (tmp[i]) && i >= 0; i--)
528 tmp[i] = '\0';
529
530 strcat (tmp, ".");
531
532 p = strrchr (tmp, ',');
533 if (p)
534 {
535 *p = '\0';
536 strcpy (input, tmp);
537 p++;
538 strcat (input, " and");
539 strcat (input, p);
540 }
541 else
542 strcpy (input, tmp);
543
544 return;
545}
546
547/////////////////////////////////////////////////////////////////////////////
548
549void *salloc_ (int n) throw (std::bad_alloc)
550{ 120{
551 void *ptr = g_slice_alloc (n); 121 void *ptr = g_slice_alloc (n);
552 122
553 if (!ptr) 123 if (!ptr)
554 throw std::bad_alloc (); 124 throw std::bad_alloc ();
555 125
126 slice_alloc += n;
556 return ptr; 127 return ptr;
557} 128}
558 129
559void *salloc_ (int n, void *src) throw (std::bad_alloc) 130void *
131salloc_ (int n, void *src)
560{ 132{
561 void *ptr = salloc_ (n); 133 void *ptr = salloc_ (n);
562 134
563 if (src) 135 if (src)
564 memcpy (ptr, src, n); 136 memcpy (ptr, src, n);
566 memset (ptr, 0, n); 138 memset (ptr, 0, n);
567 139
568 return ptr; 140 return ptr;
569} 141}
570 142
143/******************************************************************************/
144
145#if DEBUG_SALLOC
146
147#define MAGIC 0xa1b2c35543deadLL
148
149void *
150g_slice_alloc (unsigned long size)
151{
152 unsigned long *p = (unsigned long *) (g_slice_alloc)(size + sizeof (unsigned long));
153 *p++ = size ^ MAGIC;
154 //fprintf (stderr, "g_slice_alloc %ld %p\n", size, p);//D
155 return (void *)p;
156}
157
158void *
159g_slice_alloc0 (unsigned long size)
160{
161 return memset (g_slice_alloc (size), 0, size);
162}
163
164void
165g_slice_free1 (unsigned long size, void *ptr)
166{
167 //fprintf (stderr, "g_slice_free %ld %p\n", size, ptr);//D
168 if (expect_true (ptr))
169 {
170 unsigned long *p = (unsigned long *)ptr;
171 unsigned long s = *--p ^ MAGIC;
172
173 if (size != (unsigned long)(*p ^ MAGIC))
174 {
175 LOG (logBacktrace | llevError, "slice free size (%lx) doesn't match alloc size (%lx)\n", size, s);
176 abort ();
177 }
178
179 *p = MAGIC;
180
181 (g_slice_free1)(s + sizeof (unsigned long), p);
182 }
183}
184
185#endif
186
187/******************************************************************************/
188
189refcnt_buf::refcnt_buf (size_t size)
190{
191 static uint32_t empty_buf [2] = { 0, 1 }; // 2 == never deallocated
192 data = (char *)empty_buf + overhead;
193 assert (overhead == sizeof (empty_buf));
194 inc ();
195}
196
197refcnt_buf::refcnt_buf (void *data, size_t size)
198{
199 _alloc (size);
200 memcpy (this->data, data, size);
201}
202
203refcnt_buf::~refcnt_buf ()
204{
205 dec ();
206}
207
208void
209refcnt_buf::_dealloc ()
210{
211 sfree<char> (data - overhead, size () + overhead);
212}
213
214refcnt_buf &
215refcnt_buf::operator =(const refcnt_buf &src)
216{
217 dec ();
218 data = src.data;
219 inc ();
220 return *this;
221}
222
223/******************************************************************************/
224
225int
571void assign (char *dst, const char *src, int maxlen) 226assign (char *dst, const char *src, int maxsize)
572{ 227{
573 if (!src) 228 if (!src)
574 src = ""; 229 src = "";
575 230
576 int len = strlen (src); 231 int len = strlen (src);
577 232
578 if (len >= maxlen - 1) 233 if (len >= maxsize)
579 { 234 {
580 if (maxlen <= 4) 235 if (maxsize <= 4)
581 { 236 {
582 memset (dst, '.', maxlen - 1); 237 memset (dst, '.', maxsize - 2);
583 dst [maxlen - 1] = 0; 238 dst [maxsize - 1] = 0;
584 } 239 }
585 else 240 else
586 { 241 {
587 memcpy (dst, src, maxlen - 4); 242 memcpy (dst, src, maxsize - 4);
588 memcpy (dst + maxlen - 4, "...", 4); 243 memcpy (dst + maxsize - 4, "...", 4);
589 } 244 }
245
246 len = maxsize;
590 } 247 }
591 else 248 else
592 memcpy (dst, src, len + 1); 249 memcpy (dst, src, ++len);
593}
594 250
595tstamp now () 251 return len;
252}
253
254char *
255vformat (const char *format, va_list ap)
256{
257 static dynbuf_text bufs[8];
258 static int bufidx;
259
260 dynbuf_text &buf = bufs [++bufidx & 7];
261
262 buf.clear ();
263 buf.vprintf (format, ap);
264 return buf;
265}
266
267char *
268format (const char *format, ...)
269{
270 va_list ap;
271 va_start (ap, format);
272 char *buf = vformat (format, ap);
273 va_end (ap);
274
275 return buf;
276}
277
278tstamp
279now ()
596{ 280{
597 struct timeval tv; 281 struct timeval tv;
598 282
599 gettimeofday (&tv, 0); 283 gettimeofday (&tv, 0);
600 return tstamp (tv.tv_sec) + tstamp (tv.tv_usec) * tstamp (1e-6); 284 return tstamp (tv.tv_sec) + tstamp (tv.tv_usec) * tstamp (1e-6);
608 292
609 int diff = (b - a) & 7; 293 int diff = (b - a) & 7;
610 return diff <= 1 || diff >= 7; 294 return diff <= 1 || diff >= 7;
611} 295}
612 296
297/* crc32 0xdebb20e3 table and supplementary functions. */
298extern const uint32_t crc_32_tab[256] =
299{
300 0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,
301 0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,
302 0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,
303 0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,
304 0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,
305 0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,
306 0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,
307 0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,
308 0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,
309 0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,
310 0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,
311 0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,
312 0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,
313 0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,
314 0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,
315 0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,
316 0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,
317 0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,
318 0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,
319 0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,
320 0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,
321 0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,
322 0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,
323 0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,
324 0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,
325 0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,
326 0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,
327 0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,
328 0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,
329 0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,
330 0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,
331 0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,
332 0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,
333 0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,
334 0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,
335 0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,
336 0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,
337 0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,
338 0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,
339 0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,
340 0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,
341 0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,
342 0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,
343 0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,
344 0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,
345 0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,
346 0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,
347 0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,
348 0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,
349 0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,
350 0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,
351 0x2d02ef8dL
352};
353
354void
355thread::start (void *(*start_routine)(void *), void *arg)
356{
357 pthread_attr_t attr;
358
359 pthread_attr_init (&attr);
360 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
361 pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN < sizeof (long) * 4096
362 ? sizeof (long) * 4096 : PTHREAD_STACK_MIN);
363#ifdef PTHREAD_SCOPE_PROCESS
364 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
365#endif
366
367 sigset_t fullsigset, oldsigset;
368 sigfillset (&fullsigset);
369
370 pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
371
372 if (pthread_create (&id, &attr, start_routine, arg))
373 cleanup ("unable to create a new thread");
374
375 pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
376}
377

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