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33 | #include <signal.h> |
33 | #include <signal.h> |
34 | |
34 | |
35 | #include <global.h> |
35 | #include <global.h> |
36 | #include <material.h> |
36 | #include <material.h> |
37 | |
37 | |
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38 | #include <sys/time.h> |
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39 | #include <sys/resource.h> |
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40 | |
38 | #include <glib.h> |
41 | #include <glib.h> |
39 | |
42 | |
40 | refcnt_base::refcnt_t refcnt_dummy; |
43 | refcnt_base::refcnt_t refcnt_dummy; |
41 | ssize_t slice_alloc; |
44 | ssize_t slice_alloc; |
42 | rand_gen rndm; |
45 | rand_gen rndm, rmg_rndm; |
43 | |
46 | |
44 | void |
47 | void |
45 | tausworthe_random_generator::seed (uint32_t seed) |
48 | tausworthe_random_generator::seed (uint32_t seed) |
46 | { |
49 | { |
47 | state [0] = seed * 69069U; if (state [0] < 2U) state [0] += 2U; |
50 | state [0] = seed * 69069U; if (state [0] < 2U) state [0] += 2U; |
48 | state [1] = state [0] * 69069U; if (state [0] < 8U) state [0] += 8U; |
51 | state [1] = state [0] * 69069U; if (state [0] < 8U) state [0] += 8U; |
49 | state [2] = state [1] * 69069U; if (state [0] < 16U) state [0] += 16U; |
52 | state [2] = state [1] * 69069U; if (state [0] < 16U) state [0] += 16U; |
50 | state [3] = state [2] * 69069U; if (state [0] < 128U) state [0] += 128U; |
53 | state [3] = state [2] * 69069U; if (state [0] < 128U) state [0] += 128U; |
51 | |
54 | |
52 | for (int i = 11; --i; ) |
55 | for (int i = 11; --i; ) |
53 | operator ()(); |
56 | next (); |
54 | } |
57 | } |
55 | |
58 | |
56 | uint32_t |
59 | uint32_t |
57 | tausworthe_random_generator::next () |
60 | tausworthe_random_generator::next () |
58 | { |
61 | { |
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62 | state [3] = ((state [3] & 0xFFFFFF80U) << 13U) ^ (((state [3] << 3U) ^ state [3]) >> 12U); |
65 | state [3] = ((state [3] & 0xFFFFFF80U) << 13U) ^ (((state [3] << 3U) ^ state [3]) >> 12U); |
63 | |
66 | |
64 | return state [0] ^ state [1] ^ state [2] ^ state [3]; |
67 | return state [0] ^ state [1] ^ state [2] ^ state [3]; |
65 | } |
68 | } |
66 | |
69 | |
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70 | template<class generator> |
67 | uint32_t |
71 | uint32_t |
68 | tausworthe_random_generator::get_range (uint32_t num) |
72 | random_number_generator<generator>::get_range (uint32_t num) |
69 | { |
73 | { |
70 | return (next () * (uint64_t)num) >> 32U; |
74 | return (this->next () * (uint64_t)num) >> 32U; |
71 | } |
75 | } |
72 | |
76 | |
73 | // return a number within (min .. max) |
77 | // return a number within (min .. max) |
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78 | template<class generator> |
74 | int |
79 | int |
75 | tausworthe_random_generator::get_range (int r_min, int r_max) |
80 | random_number_generator<generator>::get_range (int r_min, int r_max) |
76 | { |
81 | { |
77 | return r_min + get_range (max (r_max - r_min + 1, 0)); |
82 | return r_min + get_range (max (r_max - r_min + 1, 0)); |
78 | } |
83 | } |
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84 | |
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85 | template struct random_number_generator<tausworthe_random_generator>; |
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86 | template struct random_number_generator<xorshift_random_generator>; |
79 | |
87 | |
80 | /* |
88 | /* |
81 | * The random functions here take luck into account when rolling random |
89 | * The random functions here take luck into account when rolling random |
82 | * dice or numbers. This function has less of an impact the larger the |
90 | * dice or numbers. This function has less of an impact the larger the |
83 | * difference becomes in the random numbers. IE, the effect is lessened |
91 | * difference becomes in the random numbers. IE, the effect is lessened |
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93 | * not the recipient (ie, the poor slob getting hit). [garbled 20010916] |
101 | * not the recipient (ie, the poor slob getting hit). [garbled 20010916] |
94 | */ |
102 | */ |
95 | int |
103 | int |
96 | random_roll (int r_min, int r_max, const object *op, int goodbad) |
104 | random_roll (int r_min, int r_max, const object *op, int goodbad) |
97 | { |
105 | { |
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106 | r_max = max (r_min, r_max); |
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107 | |
98 | int base = r_max - r_min > 1 ? 20 : 50; /* d2 and d3 are corner cases */ |
108 | int base = r_max - r_min > 1 ? 20 : 50; /* d2 and d3 are corner cases */ |
99 | |
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100 | if (r_max < r_min) |
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101 | { |
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102 | LOG (llevError | logBacktrace, "Calling random_roll with min=%d max=%d\n", r_min, r_max); |
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103 | return r_min; |
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104 | } |
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105 | |
109 | |
106 | if (op->type == PLAYER) |
110 | if (op->type == PLAYER) |
107 | { |
111 | { |
108 | int luck = op->stats.luck; |
112 | int luck = op->stats.luck; |
109 | |
113 | |
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119 | /* |
123 | /* |
120 | * This is a 64 bit version of random_roll above. This is needed |
124 | * This is a 64 bit version of random_roll above. This is needed |
121 | * for exp loss calculations for players changing religions. |
125 | * for exp loss calculations for players changing religions. |
122 | */ |
126 | */ |
123 | sint64 |
127 | sint64 |
124 | random_roll64 (sint64 min, sint64 max, const object *op, int goodbad) |
128 | random_roll64 (sint64 r_min, sint64 r_max, const object *op, int goodbad) |
125 | { |
129 | { |
126 | sint64 omin = min; |
130 | sint64 omin = r_min; |
127 | sint64 diff = max - min + 1; |
131 | sint64 range = max (0, r_max - r_min + 1); |
128 | int base = diff > 2 ? 20 : 50; /* d2 and d3 are corner cases */ |
132 | int base = range > 2 ? 20 : 50; /* d2 and d3 are corner cases */ |
129 | |
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130 | if (diff < 0) |
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131 | { |
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132 | LOG (llevError | logBacktrace, "Calling random_roll64 with min=%" PRId64 " max=%" PRId64 "\n", min, max); |
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133 | return (min); /* avoids a float exception */ |
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134 | } |
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135 | |
133 | |
136 | /* |
134 | /* |
137 | * Make a call to get two 32 bit unsigned random numbers, and just to |
135 | * Make a call to get two 32 bit unsigned random numbers, and just to |
138 | * a little bitshifting. |
136 | * a little bitshifting. |
139 | */ |
137 | */ |
140 | sint64 ran = (sint64) rndm.next () ^ ((sint64) rndm.next () << 31); |
138 | sint64 ran = (sint64) rndm.next () ^ ((sint64) rndm.next () << 31); |
141 | |
139 | |
142 | if (op->type != PLAYER) |
140 | if (op->type != PLAYER) |
143 | return ((ran % diff) + min); |
141 | return ((ran % range) + r_min); |
144 | |
142 | |
145 | int luck = op->stats.luck; |
143 | int luck = op->stats.luck; |
146 | |
144 | |
147 | if (rndm (base) < MIN (10, abs (luck))) |
145 | if (rndm (base) < min (10, abs (luck))) |
148 | { |
146 | { |
149 | /* we have a winner */ |
147 | /* we have a winner */ |
150 | ((luck > 0) ? (luck = 1) : (luck = -1)); |
148 | ((luck > 0) ? (luck = 1) : (luck = -1)); |
151 | diff -= luck; |
149 | range -= luck; |
152 | if (diff < 1) |
150 | if (range < 1) |
153 | return (omin); /*check again */ |
151 | return (omin); /*check again */ |
154 | |
152 | |
155 | ((goodbad) ? (min += luck) : (diff)); |
153 | ((goodbad) ? (r_min += luck) : (range)); |
156 | |
154 | |
157 | return (MAX (omin, MIN (max, (ran % diff) + min))); |
155 | return (max (omin, min (r_max, (ran % range) + r_min))); |
158 | } |
156 | } |
159 | |
157 | |
160 | return ran % diff + min; |
158 | return ran % range + r_min; |
161 | } |
159 | } |
162 | |
160 | |
163 | /* |
161 | /* |
164 | * Roll a number of dice (2d3, 4d6). Uses op to determine luck, |
162 | * Roll a number of dice (2d3, 4d6). Uses op to determine luck, |
165 | * If goodbad is non-zero, luck increases the roll, if zero, it decreases. |
163 | * If goodbad is non-zero, luck increases the roll, if zero, it decreases. |
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207 | } |
205 | } |
208 | |
206 | |
209 | /* convert materialname to materialtype_t */ |
207 | /* convert materialname to materialtype_t */ |
210 | |
208 | |
211 | materialtype_t * |
209 | materialtype_t * |
212 | name_to_material (const shstr &name) |
210 | name_to_material (const shstr_cmp name) |
213 | { |
211 | { |
214 | for (materialtype_t *mt = materialt; mt && mt->next; mt = mt->next) |
212 | for (materialtype_t *mt = materialt; mt; mt = mt->next) |
215 | if (name == mt->name) |
213 | if (name == mt->name) |
216 | return mt; |
214 | return mt; |
217 | |
215 | |
218 | return 0; |
216 | return 0; |
219 | } |
217 | } |
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225 | transmute_materialname (object *op, const object *change) |
223 | transmute_materialname (object *op, const object *change) |
226 | { |
224 | { |
227 | materialtype_t *mt; |
225 | materialtype_t *mt; |
228 | int j; |
226 | int j; |
229 | |
227 | |
230 | if (op->materialname == NULL) |
228 | if (!op->materialname) |
231 | return; |
229 | return; |
232 | |
230 | |
233 | if (change->materialname != NULL && strcmp (op->materialname, change->materialname)) |
231 | if (op->materialname != change->materialname) |
234 | return; |
232 | return; |
235 | |
233 | |
236 | if (!op->is_armor ()) |
234 | if (!op->is_armor ()) |
237 | return; |
235 | return; |
238 | |
236 | |
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258 | void |
256 | void |
259 | set_materialname (object *op, int difficulty, materialtype_t *nmt) |
257 | set_materialname (object *op, int difficulty, materialtype_t *nmt) |
260 | { |
258 | { |
261 | materialtype_t *mt, *lmt; |
259 | materialtype_t *mt, *lmt; |
262 | |
260 | |
263 | if (op->materialname != NULL) |
261 | if (!op->materialname) |
264 | return; |
262 | return; |
265 | |
263 | |
266 | if (nmt == NULL) |
264 | if (nmt) |
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265 | lmt = nmt; |
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266 | else |
267 | { |
267 | { |
268 | lmt = NULL; |
268 | lmt = 0; |
269 | |
269 | |
270 | for (mt = materialt; mt && mt->next; mt = mt->next) |
270 | for (mt = materialt; mt; mt = mt->next) |
271 | if (op->materials & mt->material && rndm (1, 100) <= mt->chance && |
271 | if (op->materials & mt->material && rndm (1, 100) <= mt->chance && |
272 | difficulty >= mt->difficulty && (op->magic >= mt->magic || mt->magic == 0)) |
272 | difficulty >= mt->difficulty && (op->magic >= mt->magic || mt->magic == 0)) |
273 | { |
273 | { |
274 | lmt = mt; |
274 | lmt = mt; |
275 | if (!(op->is_weapon () || op->is_armor ())) |
275 | if (!(op->is_weapon () || op->is_armor ())) |
276 | break; |
276 | break; |
277 | } |
277 | } |
278 | } |
278 | } |
279 | else |
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280 | lmt = nmt; |
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281 | |
279 | |
282 | if (lmt != NULL) |
280 | if (lmt) |
283 | { |
281 | { |
284 | if (op->stats.dam && op->is_weapon ()) |
282 | if (op->stats.dam && op->is_weapon ()) |
285 | { |
283 | { |
286 | op->stats.dam += lmt->damage; |
284 | op->stats.dam += lmt->damage; |
287 | if (op->stats.dam < 1) |
285 | if (op->stats.dam < 1) |
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456 | void |
454 | void |
457 | fork_abort (const char *msg) |
455 | fork_abort (const char *msg) |
458 | { |
456 | { |
459 | if (!fork ()) |
457 | if (!fork ()) |
460 | { |
458 | { |
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459 | signal (SIGINT , SIG_IGN); |
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460 | signal (SIGTERM, SIG_IGN); |
461 | signal (SIGABRT, SIG_DFL); |
461 | signal (SIGABRT, SIG_IGN); |
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462 | |
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463 | signal (SIGSEGV, SIG_DFL); |
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464 | signal (SIGBUS , SIG_DFL); |
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465 | signal (SIGILL , SIG_DFL); |
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466 | signal (SIGTRAP, SIG_DFL); |
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467 | |
462 | // try to put corefiles into a subdirectory, if existing, to allow |
468 | // try to put corefiles into a subdirectory, if existing, to allow |
463 | // an administrator to reduce the I/O load. |
469 | // an administrator to reduce the I/O load. |
464 | chdir ("cores"); |
470 | chdir ("cores"); |
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471 | |
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472 | // try to detach us from as many external dependencies as possible |
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473 | // as coredumping can take time by closing all fd's. |
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474 | { |
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475 | struct rlimit lim; |
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476 | |
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477 | if (getrlimit (RLIMIT_NOFILE, &lim)) |
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478 | lim.rlim_cur = 1024; |
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479 | |
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480 | for (int i = 0; i < lim.rlim_cur; ++i) |
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481 | close (i); |
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482 | } |
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483 | |
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484 | { |
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485 | sigset_t empty; |
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486 | sigemptyset (&empty); |
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487 | sigprocmask (SIG_SETMASK, &empty, 0); |
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488 | } |
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489 | |
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490 | // try to coredump with SIGTRAP |
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491 | kill (getpid (), SIGTRAP); |
465 | abort (); |
492 | abort (); |
466 | } |
493 | } |
467 | |
494 | |
468 | LOG (llevError, "fork abort: %s\n", msg); |
495 | LOG (llevError, "fork abort: %s\n", msg); |
469 | } |
496 | } |