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Comparing deliantra/server/common/utils.C (file contents):
Revision 1.15 by root, Thu Sep 14 22:34:00 2006 UTC vs.
Revision 1.88 by root, Sun Oct 11 05:31:54 2009 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 (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
4 Copyright (C) 2002 Mark Wedel & Crossfire Development Team 5 * Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team
5 Copyright (C) 1992 Frank Tore Johansen 6 * Copyright (©) 1992,2007 Frank Tore Johansen
6 7 *
7 This program is free software; you can redistribute it and/or modify 8 * Deliantra is free software: you can redistribute it and/or modify
8 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
9 the Free Software Foundation; either version 2 of the License, or 10 * the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version. 11 * (at your option) any later version.
11 12 *
12 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,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details. 16 * GNU General Public License for more details.
16 17 *
17 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
18 along with this program; if not, write to the Free Software 19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 *
20 21 * The authors can be reached via e-mail to <support@deliantra.net>
21 The authors can be reached via e-mail at <crossfire@schmorp.de>
22*/ 22 */
23 23
24/* 24/*
25 * General convenience functions for crossfire. 25 * General convenience functions for crossfire.
26 */ 26 */
27 27
28#include <cstdlib>
29#include <sys/types.h>
30#include <unistd.h>
31#include <sys/time.h>
32#include <time.h>
33#include <signal.h>
34
28#include <global.h> 35#include <global.h>
29#include <funcpoint.h>
30#include <material.h> 36#include <material.h>
37#include <object.h>
38
39#include <sys/time.h>
40#include <sys/resource.h>
31 41
32#include <glib.h> 42#include <glib.h>
43
44refcnt_base::refcnt_t refcnt_dummy;
45ssize_t slice_alloc;
46rand_gen rndm, rmg_rndm;
47
48void
49tausworthe_random_generator::seed (uint32_t seed)
50{
51 state [0] = seed * 69069U; if (state [0] < 2U) state [0] += 2U;
52 state [1] = state [0] * 69069U; if (state [0] < 8U) state [0] += 8U;
53 state [2] = state [1] * 69069U; if (state [0] < 16U) state [0] += 16U;
54 state [3] = state [2] * 69069U; if (state [0] < 128U) state [0] += 128U;
55
56 for (int i = 11; --i; )
57 next ();
58}
59
60uint32_t
61tausworthe_random_generator::next ()
62{
63 state [0] = ((state [0] & 0xFFFFFFFEU) << 18U) ^ (((state [0] << 6U) ^ state [0]) >> 13U);
64 state [1] = ((state [1] & 0xFFFFFFF8U) << 2U) ^ (((state [1] << 2U) ^ state [1]) >> 27U);
65 state [2] = ((state [2] & 0xFFFFFFF0U) << 7U) ^ (((state [2] << 13U) ^ state [2]) >> 21U);
66 state [3] = ((state [3] & 0xFFFFFF80U) << 13U) ^ (((state [3] << 3U) ^ state [3]) >> 12U);
67
68 return state [0] ^ state [1] ^ state [2] ^ state [3];
69}
70
71template<class generator>
72uint32_t
73random_number_generator<generator>::get_range (uint32_t num)
74{
75 return (this->next () * (uint64_t)num) >> 32U;
76}
77
78// return a number within (min .. max)
79template<class generator>
80int
81random_number_generator<generator>::get_range (int r_min, int r_max)
82{
83 return r_min + get_range (max (r_max - r_min + 1, 0));
84}
85
86template struct random_number_generator<tausworthe_random_generator>;
87template struct random_number_generator<xorshift_random_generator>;
33 88
34/* 89/*
35 * The random functions here take luck into account when rolling random 90 * The random functions here take luck into account when rolling random
36 * dice or numbers. This function has less of an impact the larger the 91 * dice or numbers. This function has less of an impact the larger the
37 * difference becomes in the random numbers. IE, the effect is lessened 92 * difference becomes in the random numbers. IE, the effect is lessened
… …
44 * Roll a random number between min and max. Uses op to determine luck, 99 * Roll a random number between min and max. Uses op to determine luck,
45 * and if goodbad is non-zero, luck increases the roll, if zero, it decreases. 100 * and if goodbad is non-zero, luck increases the roll, if zero, it decreases.
46 * Generally, op should be the player/caster/hitter requesting the roll, 101 * Generally, op should be the player/caster/hitter requesting the roll,
47 * not the recipient (ie, the poor slob getting hit). [garbled 20010916] 102 * not the recipient (ie, the poor slob getting hit). [garbled 20010916]
48 */ 103 */
49
50int 104int
51random_roll (int min, int max, const object *op, int goodbad) 105random_roll (int r_min, int r_max, const object *op, int goodbad)
52{ 106{
53 int omin, diff, luck, base, ran; 107 r_max = max (r_min, r_max);
54 108
55 omin = min; 109 int base = r_max - r_min > 1 ? 20 : 50; /* d2 and d3 are corner cases */
56 diff = max - min + 1;
57 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */
58 110
59 if (max < 1 || diff < 1)
60 {
61 LOG (llevError, "Calling random_roll with min=%d max=%d\n", min, max);
62 return (min); /* avoids a float exception */
63 }
64
65 ran = RANDOM ();
66
67 if (op->type != PLAYER) 111 if (op->type == PLAYER)
68 return ((ran % diff) + min); 112 {
69
70 luck = op->stats.luck; 113 int luck = op->stats.luck;
71 if (RANDOM () % base < MIN (10, abs (luck))) 114
115 if (rndm (base) < min (10, abs (luck)))
116 {
117 //TODO: take luck into account
118 }
72 { 119 }
73 /* we have a winner */
74 ((luck > 0) ? (luck = 1) : (luck = -1));
75 diff -= luck;
76 if (diff < 1)
77 return (omin); /*check again */
78 ((goodbad) ? (min += luck) : (diff));
79 120
80 return (MAX (omin, MIN (max, (ran % diff) + min))); 121 return rndm (r_min, r_max);
81 }
82 return ((ran % diff) + min);
83} 122}
84 123
85/* 124/*
86 * This is a 64 bit version of random_roll above. This is needed 125 * This is a 64 bit version of random_roll above. This is needed
87 * for exp loss calculations for players changing religions. 126 * for exp loss calculations for players changing religions.
88 */ 127 */
89
90sint64 128sint64
91random_roll64 (sint64 min, sint64 max, const object *op, int goodbad) 129random_roll64 (sint64 r_min, sint64 r_max, const object *op, int goodbad)
92{ 130{
93 sint64 omin, diff, luck, ran; 131 sint64 omin = r_min;
94 int base; 132 sint64 range = max (0, r_max - r_min + 1);
133 int base = range > 2 ? 20 : 50; /* d2 and d3 are corner cases */
95 134
96 omin = min; 135 /*
97 diff = max - min + 1;
98 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */
99
100 if (max < 1 || diff < 1)
101 {
102#ifndef WIN32
103 LOG (llevError, "Calling random_roll with min=%lld max=%lld\n", min, max);
104#else
105 LOG (llevError, "Calling random_roll with min=%I64d max=%I64d\n", min, max);
106#endif
107 return (min); /* avoids a float exception */
108 }
109
110 /* Don't know of a portable call to get 64 bit random values.
111 * So make a call to get two 32 bit random numbers, and just to 136 * Make a call to get two 32 bit unsigned random numbers, and just to
112 * a little byteshifting. Do make sure the first one is only 137 * a little bitshifting.
113 * 32 bit, so we don't get skewed results
114 */ 138 */
115 ran = (RANDOM () & 0xffffffff) | ((sint64) RANDOM () << 32); 139 sint64 ran = (sint64) rndm.next () ^ ((sint64) rndm.next () << 31);
116 140
117 if (op->type != PLAYER) 141 if (op->type != PLAYER)
118 return ((ran % diff) + min); 142 return ((ran % range) + r_min);
119 143
120 luck = op->stats.luck; 144 int luck = op->stats.luck;
145
121 if (RANDOM () % base < MIN (10, abs (luck))) 146 if (rndm (base) < min (10, abs (luck)))
122 { 147 {
123 /* we have a winner */ 148 /* we have a winner */
124 ((luck > 0) ? (luck = 1) : (luck = -1)); 149 ((luck > 0) ? (luck = 1) : (luck = -1));
125 diff -= luck; 150 range -= luck;
126 if (diff < 1) 151 if (range < 1)
127 return (omin); /*check again */ 152 return (omin); /*check again */
153
128 ((goodbad) ? (min += luck) : (diff)); 154 ((goodbad) ? (r_min += luck) : (range));
129 155
130 return (MAX (omin, MIN (max, (ran % diff) + min))); 156 return (max (omin, min (r_max, (ran % range) + r_min)));
131 } 157 }
132 return ((ran % diff) + min); 158
159 return ran % range + r_min;
133} 160}
134 161
135/* 162/*
136 * Roll a number of dice (2d3, 4d6). Uses op to determine luck, 163 * Roll a number of dice (2d3, 4d6). Uses op to determine luck,
137 * If goodbad is non-zero, luck increases the roll, if zero, it decreases. 164 * If goodbad is non-zero, luck increases the roll, if zero, it decreases.
138 * Generally, op should be the player/caster/hitter requesting the roll, 165 * Generally, op should be the player/caster/hitter requesting the roll,
139 * not the recipient (ie, the poor slob getting hit). 166 * not the recipient (ie, the poor slob getting hit).
140 * The args are num D size (ie 4d6) [garbled 20010916] 167 * The args are num D size (ie 4d6) [garbled 20010916]
141 */ 168 */
142
143int 169int
144die_roll (int num, int size, const object *op, int goodbad) 170die_roll (int num, int size, const object *op, int goodbad)
145{ 171{
146 int min, diff, luck, total, i, gotlucky, base, ran; 172 int min, luck, total, i, gotlucky;
147 173
148 diff = size; 174 int diff = size;
149 min = 1; 175 min = 1;
150 luck = total = gotlucky = 0; 176 luck = total = gotlucky = 0;
151 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */ 177 int base = diff > 2 ? 20 : 50; /* d2 and d3 are corner cases */
178
152 if (size < 2 || diff < 1) 179 if (size < 2 || diff < 1)
153 { 180 {
154 LOG (llevError, "Calling die_roll with num=%d size=%d\n", num, size); 181 LOG (llevError, "Calling die_roll with num=%d size=%d\n", num, size);
155 return (num); /* avoids a float exception */ 182 return num; /* avoids a float exception */
156 } 183 }
157 184
158 if (op->type == PLAYER) 185 if (op->type == PLAYER)
159 luck = op->stats.luck; 186 luck = op->stats.luck;
160 187
161 for (i = 0; i < num; i++) 188 for (i = 0; i < num; i++)
162 { 189 {
163 if (RANDOM () % base < MIN (10, abs (luck)) && !gotlucky) 190 if (rndm (base) < MIN (10, abs (luck)) && !gotlucky)
164 { 191 {
165 /* we have a winner */ 192 /* we have a winner */
166 gotlucky++; 193 gotlucky++;
167 ((luck > 0) ? (luck = 1) : (luck = -1)); 194 ((luck > 0) ? (luck = 1) : (luck = -1));
168 diff -= luck; 195 diff -= luck;
169 if (diff < 1) 196 if (diff < 1)
170 return (num); /*check again */ 197 return (num); /*check again */
171 ((goodbad) ? (min += luck) : (diff)); 198 ((goodbad) ? (min += luck) : (diff));
172 ran = RANDOM ();
173 total += MAX (1, MIN (size, (ran % diff) + min)); 199 total += MAX (1, MIN (size, rndm (diff) + min));
174 } 200 }
175 else 201 else
176 {
177 total += RANDOM () % size + 1; 202 total += rndm (size) + 1;
178 }
179 } 203 }
204
180 return (total); 205 return total;
181}
182
183/*
184 * Another convenience function. Returns a number between min and max.
185 * It is suggested one use these functions rather than RANDOM()%, as it
186 * would appear that a number of off-by-one-errors exist due to improper
187 * use of %. This should also prevent SIGFPE.
188 */
189
190int
191rndm (int min, int max)
192{
193 int diff;
194
195 diff = max - min + 1;
196 if (max < 1 || diff < 1)
197 return (min);
198
199 return (RANDOM () % diff + min);
200}
201
202/* decay and destroy persihable items in a map */
203
204void
205decay_objects (mapstruct *m)
206{
207 int x, y, destroy;
208 object *op, *otmp;
209
210 if (m->unique)
211 return;
212
213 for (x = 0; x < MAP_WIDTH (m); x++)
214 for (y = 0; y < MAP_HEIGHT (m); y++)
215 for (op = get_map_ob (m, x, y); op; op = otmp)
216 {
217 destroy = 0;
218 otmp = op->above;
219 if (QUERY_FLAG (op, FLAG_IS_FLOOR) && QUERY_FLAG (op, FLAG_UNIQUE))
220 break;
221 if (QUERY_FLAG (op, FLAG_IS_FLOOR) ||
222 QUERY_FLAG (op, FLAG_OBJ_ORIGINAL) ||
223 QUERY_FLAG (op, FLAG_OBJ_SAVE_ON_OVL) ||
224 QUERY_FLAG (op, FLAG_UNIQUE) || QUERY_FLAG (op, FLAG_OVERLAY_FLOOR) || QUERY_FLAG (op, FLAG_UNPAID) || IS_LIVE (op))
225 continue;
226 /* otherwise, we decay and destroy */
227 if (IS_WEAPON (op))
228 {
229 op->stats.dam--;
230 if (op->stats.dam < 0)
231 destroy = 1;
232 }
233 else if (IS_ARMOR (op))
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 if (op->material & M_PAPER || op->material & M_LEATHER ||
248 op->material & M_WOOD || op->material & M_ORGANIC || op->material & M_CLOTH || op->material & M_LIQUID)
249 destroy = 1;
250 if (op->material & M_IRON && rndm (1, 5) == 1)
251 destroy = 1;
252 if (op->material & M_GLASS && rndm (1, 2) == 1)
253 destroy = 1;
254 if ((op->material & M_STONE || op->material & M_ADAMANT) && rndm (1, 10) == 1)
255 destroy = 1;
256 if ((op->material & M_SOFT_METAL || op->material & M_BONE) && rndm (1, 3) == 1)
257 destroy = 1;
258 if (op->material & M_ICE && MAP_TEMP (m) > 32)
259 destroy = 1;
260 }
261 /* adjust overall chance below */
262 if (destroy && rndm (0, 1))
263 {
264 remove_ob (op);
265 free_object (op);
266 }
267 }
268} 206}
269 207
270/* convert materialname to materialtype_t */ 208/* convert materialname to materialtype_t */
271 209
272materialtype_t * 210materialtype_t *
273name_to_material (const char *name) 211name_to_material (const shstr_cmp name)
274{ 212{
275 materialtype_t *mt, *nmt; 213 for (materialtype_t *mt = materialt; mt; mt = mt->next)
214 if (name == mt->name)
215 return mt;
276 216
277 mt = NULL;
278 for (nmt = materialt; nmt != NULL && nmt->next != NULL; nmt = nmt->next)
279 {
280 if (strcmp (name, nmt->name) == 0)
281 {
282 mt = nmt;
283 break;
284 }
285 }
286 return mt; 217 return 0;
287} 218}
288 219
289/* when doing transmutation of objects, we have to recheck the resistances, 220/* when doing transmutation of objects, we have to recheck the resistances,
290 * as some that did not apply previously, may apply now. 221 * as some that did not apply previously, may apply now.
291 */ 222 */
292
293void 223void
294transmute_materialname (object *op, const object *change) 224transmute_materialname (object *op, const object *change)
295{ 225{
296 materialtype_t *mt; 226 materialtype_t *mt;
297 int j; 227 int j;
298 228
299 if (op->materialname == NULL) 229 if (!op->materialname)
300 return; 230 return;
301 231
302 if (change->materialname != NULL && strcmp (op->materialname, change->materialname)) 232 if (op->materialname != change->materialname)
303 return; 233 return;
304 234
305 if (!IS_ARMOR (op)) 235 if (!op->is_armor ())
306 return; 236 return;
307 237
308 mt = name_to_material (op->materialname); 238 mt = name_to_material (op->materialname);
309 if (!mt) 239 if (!mt)
310 { 240 {
311 LOG (llevError, "archetype '%s>%s' uses nonexistent material '%s'\n", &op->arch->name, &op->name, &op->materialname); 241 LOG (llevError, "archetype '%s>%s' uses nonexistent material '%s'\n", &op->arch->archname, &op->name, &op->materialname);
312 return; 242 return;
313 } 243 }
314 244
315 for (j = 0; j < NROFATTACKS; j++) 245 for (j = 0; j < NROFATTACKS; j++)
316 if (op->resist[j] == 0 && change->resist[j] != 0) 246 if (op->resist[j] == 0 && change->resist[j] != 0)
… …
327void 257void
328set_materialname (object *op, int difficulty, materialtype_t *nmt) 258set_materialname (object *op, int difficulty, materialtype_t *nmt)
329{ 259{
330 materialtype_t *mt, *lmt; 260 materialtype_t *mt, *lmt;
331 261
332#ifdef NEW_MATERIAL_CODE
333 int j;
334#endif
335
336 if (op->materialname != NULL) 262 if (!op->materialname)
337 return; 263 return;
338 264
339 265 if (nmt)
340 266 lmt = nmt;
341 if (nmt == NULL) 267 else
342 { 268 {
343 lmt = NULL; 269 lmt = 0;
344#ifndef NEW_MATERIAL_CODE 270
345 for (mt = materialt; mt != NULL && mt->next != NULL; mt = mt->next) 271 for (mt = materialt; mt; mt = mt->next)
346 { 272 if (op->materials & mt->material && rndm (1, 100) <= mt->chance &&
347 if (op->material & mt->material) 273 difficulty >= mt->difficulty && (op->magic >= mt->magic || mt->magic == 0))
348 { 274 {
349 lmt = mt; 275 lmt = mt;
276 if (!(op->is_weapon () || op->is_armor ()))
350 break; 277 break;
351 } 278 }
352 }
353
354#else
355 for (mt = materialt; mt != NULL && mt->next != NULL; mt = mt->next)
356 {
357 if (op->material & mt->material && rndm (1, 100) <= mt->chance &&
358 difficulty >= mt->difficulty && (op->magic >= mt->magic || mt->magic == 0))
359 {
360 lmt = mt;
361 if (!(IS_WEAPON (op) || IS_ARMOR (op)))
362 break;
363 }
364 }
365#endif
366 }
367 else
368 { 279 }
369 lmt = nmt; 280
281 if (lmt)
370 } 282 {
371 283 if (op->stats.dam && op->is_weapon ())
372 if (lmt != NULL)
373 {
374#ifndef NEW_MATERIAL_CODE
375 op->materialname = lmt->name;
376 return;
377#else
378
379 if (op->stats.dam && IS_WEAPON (op))
380 { 284 {
381 op->stats.dam += lmt->damage; 285 op->stats.dam += lmt->damage;
382 if (op->stats.dam < 1) 286 if (op->stats.dam < 1)
383 op->stats.dam = 1; 287 op->stats.dam = 1;
384 } 288 }
289
385 if (op->stats.sp && op->type == BOW) 290 if (op->stats.sp && op->type == BOW)
386 op->stats.sp += lmt->sp; 291 op->stats.sp += lmt->sp;
387 if (op->stats.wc && IS_WEAPON (op)) 292 if (op->stats.wc && op->is_weapon ())
388 op->stats.wc += lmt->wc; 293 op->stats.wc += lmt->wc;
389 if (IS_ARMOR (op)) 294 if (op->is_armor ())
390 { 295 {
391 if (op->stats.ac) 296 if (op->stats.ac)
392 op->stats.ac += lmt->ac; 297 op->stats.ac += lmt->ac;
298
393 for (j = 0; j < NROFATTACKS; j++) 299 for (int j = 0; j < NROFATTACKS; j++)
394 if (op->resist[j] != 0) 300 if (op->resist[j] != 0)
395 { 301 {
396 op->resist[j] += lmt->mod[j]; 302 op->resist[j] += lmt->mod[j];
397 if (op->resist[j] > 100) 303 if (op->resist[j] > 100)
398 op->resist[j] = 100; 304 op->resist[j] = 100;
399 if (op->resist[j] < -100) 305 if (op->resist[j] < -100)
400 op->resist[j] = -100; 306 op->resist[j] = -100;
401 } 307 }
402 } 308 }
309
403 op->materialname = add_string (lmt->name); 310 op->materialname = lmt->name;
404 /* dont make it unstackable if it doesn't need to be */ 311 /* dont make it unstackable if it doesn't need to be */
405 if (IS_WEAPON (op) || IS_ARMOR (op)) 312 if (op->is_weapon () || op->is_armor ())
406 { 313 {
407 op->weight = (op->weight * lmt->weight) / 100; 314 op->weight = (op->weight * lmt->weight) / 100;
408 op->value = (op->value * lmt->value) / 100; 315 op->value = (op->value * lmt->value) / 100;
409 } 316 }
410#endif
411 } 317 }
412} 318}
413 319
414/* 320/*
415 * Strip out the media tags from a String. 321 * Strip out the media tags from a String.
… …
510 * a 'list' for the purposes here, is a string of items, seperated by commas, except 416 * a 'list' for the purposes here, is a string of items, seperated by commas, except
511 * for the last entry, which has an 'and' before it, and a full stop (period) after it. 417 * for the last entry, which has an 'and' before it, and a full stop (period) after it.
512 * This function will also strip all trailing non alphanumeric characters. 418 * This function will also strip all trailing non alphanumeric characters.
513 * It does not insert an oxford comma. 419 * It does not insert an oxford comma.
514 */ 420 */
515
516void 421void
517make_list_like (char *input) 422make_list_like (char *input)
518{ 423{
519 char *p, tmp[MAX_BUF]; 424 char *p, tmp[MAX_BUF];
520 int i; 425 int i;
… …
543 strcpy (input, tmp); 448 strcpy (input, tmp);
544 449
545 return; 450 return;
546} 451}
547 452
453/******************************************************************************/
454
455/* Checks a player-provided string which will become the msg property of
456 * an object for dangerous input.
457 */
458bool
459msg_is_safe (const char *msg)
460{
461 bool safe = true;
462
463 /* Trying to cheat by getting data into the object */
464 if (!strncmp (msg, "endmsg", sizeof ("endmsg") - 1)
465 || strstr (msg, "\nendmsg"))
466 safe = false;
467
468 /* Trying to make the object talk, and potentially access arbitrary code */
469 if (object::msg_has_dialogue (msg))
470 safe = false;
471
472 return safe;
473}
474
548///////////////////////////////////////////////////////////////////////////// 475/////////////////////////////////////////////////////////////////////////////
549 476
477void
478fork_abort (const char *msg)
479{
480 if (!fork ())
481 {
482 signal (SIGINT , SIG_IGN);
483 signal (SIGTERM, SIG_IGN);
484 signal (SIGABRT, SIG_IGN);
485
486 signal (SIGSEGV, SIG_DFL);
487 signal (SIGBUS , SIG_DFL);
488 signal (SIGILL , SIG_DFL);
489 signal (SIGTRAP, SIG_DFL);
490
491 // try to put corefiles into a subdirectory, if existing, to allow
492 // an administrator to reduce the I/O load.
493 chdir ("cores");
494
495 // try to detach us from as many external dependencies as possible
496 // as coredumping can take time by closing all fd's.
497 {
498 struct rlimit lim;
499
500 if (getrlimit (RLIMIT_NOFILE, &lim))
501 lim.rlim_cur = 1024;
502
503 for (int i = 0; i < lim.rlim_cur; ++i)
504 close (i);
505 }
506
507 {
508 sigset_t empty;
509 sigemptyset (&empty);
510 sigprocmask (SIG_SETMASK, &empty, 0);
511 }
512
513 // try to coredump with SIGTRAP
514 kill (getpid (), SIGTRAP);
515 abort ();
516 }
517
518 LOG (llevError, "fork abort: %s\n", msg);
519}
520
550void *alloc (int s) throw (std::bad_alloc) 521void *salloc_ (int n) throw (std::bad_alloc)
551{ 522{
552 void *p = g_slice_alloc (s); 523 void *ptr = g_slice_alloc (n);
553 524
554 if (!p) 525 if (!ptr)
555 throw std::bad_alloc (); 526 throw std::bad_alloc ();
556 527
528 slice_alloc += n;
557 return p; 529 return ptr;
558} 530}
559 531
532void *salloc_ (int n, void *src) throw (std::bad_alloc)
533{
534 void *ptr = salloc_ (n);
535
536 if (src)
537 memcpy (ptr, src, n);
538 else
539 memset (ptr, 0, n);
540
541 return ptr;
542}
543
544/******************************************************************************/
545
546#if DEBUG_SALLOC
547
548#define MAGIC 0xa1b2c35543deadLL
549
550void *g_slice_alloc (unsigned long size)
551{
552 unsigned long *p = (unsigned long *) (g_slice_alloc)(size + sizeof (unsigned long));
553 *p++ = size ^ MAGIC;
554 //fprintf (stderr, "g_slice_alloc %ld %p\n", size, p);//D
555 return (void *)p;
556}
557
558void *g_slice_alloc0 (unsigned long size)
559{
560 return memset (g_slice_alloc (size), 0, size);
561}
562
563void g_slice_free1 (unsigned long size, void *ptr)
564{
565 //fprintf (stderr, "g_slice_free %ld %p\n", size, ptr);//D
566 if (expect_true (ptr))
567 {
568 unsigned long *p = (unsigned long *)ptr;
569 unsigned long s = *--p ^ MAGIC;
570
571 if (size != (unsigned long)(*p ^ MAGIC))
572 {
573 LOG (logBacktrace | llevError, "slice free size (%lx) doesn't match alloc size (%lx)\n", size, s);
574 abort ();
575 }
576
577 *p = MAGIC;
578
579 (g_slice_free1)(s + sizeof (unsigned long), p);
580 }
581}
582
583#endif
584
585/******************************************************************************/
586
587int
560void assign (char *dst, const char *src, int maxlen) 588assign (char *dst, const char *src, int maxsize)
561{ 589{
562 if (!src) 590 if (!src)
563 src = ""; 591 src = "";
564 592
565 int len = strlen (src); 593 int len = strlen (src);
566 594
567 if (len >= maxlen - 1) 595 if (len >= maxsize)
568 { 596 {
569 if (maxlen <= 4) 597 if (maxsize <= 4)
570 { 598 {
571 memset (dst, '.', maxlen - 1); 599 memset (dst, '.', maxsize - 2);
572 dst [maxlen - 1] = 0; 600 dst [maxsize - 1] = 0;
573 } 601 }
574 else 602 else
575 { 603 {
576 memcpy (dst, src, maxlen - 4); 604 memcpy (dst, src, maxsize - 4);
577 memcpy (dst + maxlen - 4, "...", 4); 605 memcpy (dst + maxsize - 4, "...", 4);
578 } 606 }
607
608 len = maxsize;
579 } 609 }
580 else 610 else
581 memcpy (dst, src, len + 1); 611 memcpy (dst, src, ++len);
582}
583 612
613 return len;
614}
615
616const char *
617format (const char *format, ...)
618{
619 static dynbuf_text buf;
620
621 buf.clear ();
622
623 va_list ap;
624 va_start (ap, format);
625 buf.vprintf (format, ap);
626 va_end (ap);
627
628 return buf;
629}
630
631tstamp now ()
632{
633 struct timeval tv;
634
635 gettimeofday (&tv, 0);
636 return tstamp (tv.tv_sec) + tstamp (tv.tv_usec) * tstamp (1e-6);
637}
638
639int
640similar_direction (int a, int b)
641{
642 if (!a || !b)
643 return 0;
644
645 int diff = (b - a) & 7;
646 return diff <= 1 || diff >= 7;
647}
648
649/* crc32 0xdebb20e3 table and supplementary functions. */
650extern const uint32_t crc_32_tab[256] =
651{
652 0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,
653 0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,
654 0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,
655 0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,
656 0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,
657 0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,
658 0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,
659 0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,
660 0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,
661 0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,
662 0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,
663 0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,
664 0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,
665 0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,
666 0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,
667 0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,
668 0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,
669 0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,
670 0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,
671 0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,
672 0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,
673 0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,
674 0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,
675 0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,
676 0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,
677 0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,
678 0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,
679 0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,
680 0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,
681 0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,
682 0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,
683 0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,
684 0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,
685 0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,
686 0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,
687 0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,
688 0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,
689 0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,
690 0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,
691 0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,
692 0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,
693 0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,
694 0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,
695 0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,
696 0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,
697 0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,
698 0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,
699 0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,
700 0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,
701 0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,
702 0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,
703 0x2d02ef8dL
704};
705
706void thread::start (void *(*start_routine)(void *), void *arg)
707{
708 pthread_attr_t attr;
709
710 pthread_attr_init (&attr);
711 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
712 pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN < sizeof (long) * 4096
713 ? sizeof (long) * 4096 : PTHREAD_STACK_MIN);
714#ifdef PTHREAD_SCOPE_PROCESS
715 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
716#endif
717
718 sigset_t fullsigset, oldsigset;
719 sigfillset (&fullsigset);
720
721 pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
722
723 if (pthread_create (&id, &attr, start_routine, arg))
724 cleanup ("unable to create a new thread");
725
726 pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
727}
728

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