1 | /* |
1 | /* |
2 | * This file is part of Deliantra, the Roguelike Realtime MMORPG. |
2 | * This file is part of Deliantra, the Roguelike Realtime MMORPG. |
3 | * |
3 | * |
4 | * Copyright (©) 2005,2006,2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
4 | * Copyright (©) 2005,2006,2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
5 | * |
5 | * |
6 | * Deliantra is free software: you can redistribute it and/or modify it under |
6 | * Deliantra is free software: you can redistribute it and/or modify it under |
7 | * the terms of the Affero GNU General Public License as published by the |
7 | * the terms of the Affero GNU General Public License as published by the |
8 | * Free Software Foundation, either version 3 of the License, or (at your |
8 | * Free Software Foundation, either version 3 of the License, or (at your |
9 | * option) any later version. |
9 | * option) any later version. |
10 | * |
10 | * |
11 | * 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, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | * GNU General Public License for more details. |
14 | * GNU General Public License for more details. |
15 | * |
15 | * |
16 | * You should have received a copy of the Affero GNU General Public License |
16 | * You should have received a copy of the Affero GNU General Public License |
17 | * and the GNU General Public License along with this program. If not, see |
17 | * and the GNU General Public License along with this program. If not, see |
18 | * <http://www.gnu.org/licenses/>. |
18 | * <http://www.gnu.org/licenses/>. |
19 | * |
19 | * |
20 | * The authors can be reached via e-mail to <support@deliantra.net> |
20 | * The authors can be reached via e-mail to <support@deliantra.net> |
21 | */ |
21 | */ |
22 | |
22 | |
23 | /* |
23 | /* |
24 | * General convenience functions for deliantra. |
24 | * General convenience functions for deliantra. |
… | |
… | |
40 | |
40 | |
41 | #include <glib.h> |
41 | #include <glib.h> |
42 | |
42 | |
43 | refcnt_base::refcnt_t refcnt_dummy; |
43 | refcnt_base::refcnt_t refcnt_dummy; |
44 | ssize_t slice_alloc; |
44 | ssize_t slice_alloc; |
45 | rand_gen rndm, rmg_rndm; |
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46 | |
45 | |
47 | #if !GCC_VERSION(3,4) |
46 | #if !GCC_VERSION(3,4) |
48 | int least_significant_bit (uint32_t x) |
47 | int least_significant_bit (uint32_t x) |
49 | { |
48 | { |
50 | x &= -x; // this isolates the lowest bit |
49 | x &= -x; // this isolates the lowest bit |
… | |
… | |
59 | |
58 | |
60 | return r; |
59 | return r; |
61 | } |
60 | } |
62 | #endif |
61 | #endif |
63 | |
62 | |
64 | void |
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65 | tausworthe_random_generator::seed (uint32_t seed) |
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66 | { |
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67 | state [0] = seed * 69069U; if (state [0] < 2U) state [0] += 2U; |
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68 | state [1] = state [0] * 69069U; if (state [0] < 8U) state [0] += 8U; |
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69 | state [2] = state [1] * 69069U; if (state [0] < 16U) state [0] += 16U; |
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70 | state [3] = state [2] * 69069U; if (state [0] < 128U) state [0] += 128U; |
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71 | |
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72 | for (int i = 11; --i; ) |
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73 | next (); |
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74 | } |
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75 | |
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76 | uint32_t |
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77 | tausworthe_random_generator::next () |
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78 | { |
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79 | state [0] = ((state [0] & 0xFFFFFFFEU) << 18U) ^ (((state [0] << 6U) ^ state [0]) >> 13U); |
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80 | state [1] = ((state [1] & 0xFFFFFFF8U) << 2U) ^ (((state [1] << 2U) ^ state [1]) >> 27U); |
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81 | state [2] = ((state [2] & 0xFFFFFFF0U) << 7U) ^ (((state [2] << 13U) ^ state [2]) >> 21U); |
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82 | state [3] = ((state [3] & 0xFFFFFF80U) << 13U) ^ (((state [3] << 3U) ^ state [3]) >> 12U); |
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83 | |
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84 | return state [0] ^ state [1] ^ state [2] ^ state [3]; |
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85 | } |
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86 | |
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87 | template<class generator> |
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88 | uint32_t |
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89 | random_number_generator<generator>::get_range (uint32_t num) |
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90 | { |
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91 | return (this->next () * (uint64_t)num) >> 32U; |
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92 | } |
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93 | |
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94 | // return a number within (min .. max) |
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95 | template<class generator> |
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96 | int |
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97 | random_number_generator<generator>::get_range (int r_min, int r_max) |
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98 | { |
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99 | return r_min + get_range (max (r_max - r_min + 1, 0)); |
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100 | } |
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101 | |
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102 | template struct random_number_generator<tausworthe_random_generator>; |
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103 | template struct random_number_generator<xorshift_random_generator>; |
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104 | |
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105 | /******************************************************************************/ |
63 | /******************************************************************************/ |
106 | |
64 | |
107 | /* Checks a player-provided string which will become the msg property of |
65 | /* Checks a player-provided string which will become the msg property of |
108 | * an object for dangerous input. |
66 | * an object for dangerous input. |
109 | */ |
67 | */ |
… | |
… | |
134 | signal (SIGINT , SIG_IGN); |
92 | signal (SIGINT , SIG_IGN); |
135 | signal (SIGTERM, SIG_IGN); |
93 | signal (SIGTERM, SIG_IGN); |
136 | signal (SIGABRT, SIG_IGN); |
94 | signal (SIGABRT, SIG_IGN); |
137 | |
95 | |
138 | signal (SIGSEGV, SIG_DFL); |
96 | signal (SIGSEGV, SIG_DFL); |
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97 | signal (SIGFPE , SIG_DFL); |
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98 | #ifdef SIGBUS |
139 | signal (SIGBUS , SIG_DFL); |
99 | signal (SIGBUS , SIG_DFL); |
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100 | #endif |
140 | signal (SIGILL , SIG_DFL); |
101 | signal (SIGILL , SIG_DFL); |
141 | signal (SIGTRAP, SIG_DFL); |
102 | signal (SIGTRAP, SIG_DFL); |
142 | |
103 | |
143 | // try to put corefiles into a subdirectory, if existing, to allow |
104 | // try to put corefiles into a subdirectory, if existing, to allow |
144 | // an administrator to reduce the I/O load. |
105 | // an administrator to reduce the I/O load. |
… | |
… | |
168 | } |
129 | } |
169 | |
130 | |
170 | LOG (llevError, "fork abort: %s\n", msg); |
131 | LOG (llevError, "fork abort: %s\n", msg); |
171 | } |
132 | } |
172 | |
133 | |
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134 | void * |
173 | void *salloc_ (int n) throw (std::bad_alloc) |
135 | salloc_ (int n) throw (std::bad_alloc) |
174 | { |
136 | { |
175 | void *ptr = g_slice_alloc (n); |
137 | void *ptr = g_slice_alloc (n); |
176 | |
138 | |
177 | if (!ptr) |
139 | if (!ptr) |
178 | throw std::bad_alloc (); |
140 | throw std::bad_alloc (); |
179 | |
141 | |
180 | slice_alloc += n; |
142 | slice_alloc += n; |
181 | return ptr; |
143 | return ptr; |
182 | } |
144 | } |
183 | |
145 | |
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146 | void * |
184 | void *salloc_ (int n, void *src) throw (std::bad_alloc) |
147 | salloc_ (int n, void *src) throw (std::bad_alloc) |
185 | { |
148 | { |
186 | void *ptr = salloc_ (n); |
149 | void *ptr = salloc_ (n); |
187 | |
150 | |
188 | if (src) |
151 | if (src) |
189 | memcpy (ptr, src, n); |
152 | memcpy (ptr, src, n); |
… | |
… | |
197 | |
160 | |
198 | #if DEBUG_SALLOC |
161 | #if DEBUG_SALLOC |
199 | |
162 | |
200 | #define MAGIC 0xa1b2c35543deadLL |
163 | #define MAGIC 0xa1b2c35543deadLL |
201 | |
164 | |
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165 | void * |
202 | void *g_slice_alloc (unsigned long size) |
166 | g_slice_alloc (unsigned long size) |
203 | { |
167 | { |
204 | unsigned long *p = (unsigned long *) (g_slice_alloc)(size + sizeof (unsigned long)); |
168 | unsigned long *p = (unsigned long *) (g_slice_alloc)(size + sizeof (unsigned long)); |
205 | *p++ = size ^ MAGIC; |
169 | *p++ = size ^ MAGIC; |
206 | //fprintf (stderr, "g_slice_alloc %ld %p\n", size, p);//D |
170 | //fprintf (stderr, "g_slice_alloc %ld %p\n", size, p);//D |
207 | return (void *)p; |
171 | return (void *)p; |
208 | } |
172 | } |
209 | |
173 | |
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174 | void * |
210 | void *g_slice_alloc0 (unsigned long size) |
175 | g_slice_alloc0 (unsigned long size) |
211 | { |
176 | { |
212 | return memset (g_slice_alloc (size), 0, size); |
177 | return memset (g_slice_alloc (size), 0, size); |
213 | } |
178 | } |
214 | |
179 | |
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180 | void |
215 | void g_slice_free1 (unsigned long size, void *ptr) |
181 | g_slice_free1 (unsigned long size, void *ptr) |
216 | { |
182 | { |
217 | //fprintf (stderr, "g_slice_free %ld %p\n", size, ptr);//D |
183 | //fprintf (stderr, "g_slice_free %ld %p\n", size, ptr);//D |
218 | if (expect_true (ptr)) |
184 | if (expect_true (ptr)) |
219 | { |
185 | { |
220 | unsigned long *p = (unsigned long *)ptr; |
186 | unsigned long *p = (unsigned long *)ptr; |
… | |
… | |
231 | (g_slice_free1)(s + sizeof (unsigned long), p); |
197 | (g_slice_free1)(s + sizeof (unsigned long), p); |
232 | } |
198 | } |
233 | } |
199 | } |
234 | |
200 | |
235 | #endif |
201 | #endif |
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202 | |
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203 | /******************************************************************************/ |
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204 | |
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205 | refcnt_buf::refcnt_buf (size_t size) |
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206 | { |
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207 | static uint32_t empty_buf [2] = { 0, 1 }; // 2 == never deallocated |
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208 | data = (char *)empty_buf + overhead; |
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209 | assert (overhead == sizeof (empty_buf)); |
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210 | inc (); |
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211 | } |
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212 | |
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213 | refcnt_buf::refcnt_buf (void *data, size_t size) |
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214 | { |
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215 | _alloc (size); |
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216 | memcpy (this->data, data, size); |
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217 | } |
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218 | |
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219 | refcnt_buf::~refcnt_buf () |
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220 | { |
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221 | dec (); |
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222 | } |
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223 | |
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224 | void |
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225 | refcnt_buf::_dealloc () |
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226 | { |
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227 | sfree<char> (data - overhead, size () + overhead); |
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228 | } |
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229 | |
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230 | refcnt_buf & |
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231 | refcnt_buf::operator =(const refcnt_buf &src) |
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232 | { |
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233 | dec (); |
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234 | data = src.data; |
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235 | inc (); |
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236 | return *this; |
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237 | } |
236 | |
238 | |
237 | /******************************************************************************/ |
239 | /******************************************************************************/ |
238 | |
240 | |
239 | int |
241 | int |
240 | assign (char *dst, const char *src, int maxsize) |
242 | assign (char *dst, const char *src, int maxsize) |
… | |
… | |
287 | va_end (ap); |
289 | va_end (ap); |
288 | |
290 | |
289 | return buf; |
291 | return buf; |
290 | } |
292 | } |
291 | |
293 | |
292 | tstamp now () |
294 | tstamp |
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295 | now () |
293 | { |
296 | { |
294 | struct timeval tv; |
297 | struct timeval tv; |
295 | |
298 | |
296 | gettimeofday (&tv, 0); |
299 | gettimeofday (&tv, 0); |
297 | 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); |
… | |
… | |
362 | 0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL, |
365 | 0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL, |
363 | 0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL, |
366 | 0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL, |
364 | 0x2d02ef8dL |
367 | 0x2d02ef8dL |
365 | }; |
368 | }; |
366 | |
369 | |
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370 | void |
367 | void thread::start (void *(*start_routine)(void *), void *arg) |
371 | thread::start (void *(*start_routine)(void *), void *arg) |
368 | { |
372 | { |
369 | pthread_attr_t attr; |
373 | pthread_attr_t attr; |
370 | |
374 | |
371 | pthread_attr_init (&attr); |
375 | pthread_attr_init (&attr); |
372 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
376 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |