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fb91c0ef PP |
1 | /* |
2 | * Copyright 2019 Philippe Proulx <pproulx@efficios.com> | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
5 | * of this software and associated documentation files (the "Software"), to deal | |
6 | * in the Software without restriction, including without limitation the rights | |
7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
8 | * copies of the Software, and to permit persons to whom the Software is | |
9 | * furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice shall be included in | |
12 | * all copies or substantial portions of the Software. | |
13 | * | |
14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
20 | * SOFTWARE. | |
21 | */ | |
22 | ||
23 | #define BT_LOG_TAG "LIB/INT-RANGE-SET" | |
24 | #include "lib/logging.h" | |
25 | ||
26 | #include <babeltrace2/babeltrace.h> | |
27 | #include "lib/assert-pre.h" | |
28 | #include "common/assert.h" | |
29 | #include "func-status.h" | |
30 | #include "integer-range-set.h" | |
31 | ||
6769570a PP |
32 | uint64_t bt_integer_range_unsigned_get_lower( |
33 | const struct bt_integer_range_unsigned *u_range) | |
fb91c0ef PP |
34 | { |
35 | const struct bt_integer_range *range = (const void *) u_range; | |
36 | ||
6769570a | 37 | BT_ASSERT_PRE_DEV_NON_NULL(range, "Integer range"); |
fb91c0ef PP |
38 | return range->lower.u; |
39 | } | |
40 | ||
6769570a PP |
41 | uint64_t bt_integer_range_unsigned_get_upper( |
42 | const struct bt_integer_range_unsigned *u_range) | |
fb91c0ef PP |
43 | { |
44 | const struct bt_integer_range *range = (const void *) u_range; | |
45 | ||
6769570a | 46 | BT_ASSERT_PRE_DEV_NON_NULL(range, "Integer range"); |
fb91c0ef PP |
47 | return range->upper.u; |
48 | } | |
49 | ||
6769570a PP |
50 | int64_t bt_integer_range_signed_get_lower( |
51 | const struct bt_integer_range_signed *i_range) | |
fb91c0ef PP |
52 | { |
53 | const struct bt_integer_range *range = (const void *) i_range; | |
54 | ||
6769570a | 55 | BT_ASSERT_PRE_DEV_NON_NULL(range, "Integer range"); |
fb91c0ef PP |
56 | return range->lower.i; |
57 | } | |
58 | ||
6769570a PP |
59 | int64_t bt_integer_range_signed_get_upper( |
60 | const struct bt_integer_range_signed *i_range) | |
fb91c0ef PP |
61 | { |
62 | const struct bt_integer_range *range = (const void *) i_range; | |
63 | ||
6769570a | 64 | BT_ASSERT_PRE_DEV_NON_NULL(range, "Integer range"); |
fb91c0ef PP |
65 | return range->upper.i; |
66 | } | |
67 | ||
68 | static | |
69 | bool compare_ranges(const struct bt_integer_range *range_a, | |
70 | const struct bt_integer_range *range_b) | |
71 | { | |
72 | return range_a->lower.u == range_b->lower.u && | |
73 | range_a->upper.u == range_b->upper.u; | |
74 | } | |
75 | ||
76 | bt_bool bt_integer_range_unsigned_compare( | |
77 | const struct bt_integer_range_unsigned *range_a, | |
78 | const struct bt_integer_range_unsigned *range_b) | |
79 | { | |
6769570a PP |
80 | BT_ASSERT_PRE_DEV_NON_NULL(range_a, "Integer range A"); |
81 | BT_ASSERT_PRE_DEV_NON_NULL(range_b, "Integer range B"); | |
fb91c0ef PP |
82 | return (bt_bool) compare_ranges((const void *) range_a, |
83 | (const void *) range_b); | |
84 | } | |
85 | ||
86 | bt_bool bt_integer_range_signed_compare( | |
87 | const struct bt_integer_range_signed *range_a, | |
88 | const struct bt_integer_range_signed *range_b) | |
89 | { | |
6769570a PP |
90 | BT_ASSERT_PRE_DEV_NON_NULL(range_a, "Integer range A"); |
91 | BT_ASSERT_PRE_DEV_NON_NULL(range_b, "Integer range B"); | |
fb91c0ef PP |
92 | return (bt_bool) compare_ranges((const void *) range_a, |
93 | (const void *) range_b); | |
94 | } | |
95 | ||
96 | uint64_t bt_integer_range_set_get_range_count( | |
97 | const bt_integer_range_set *range_set) | |
98 | { | |
6769570a | 99 | BT_ASSERT_PRE_DEV_NON_NULL(range_set, "Integer range set"); |
fb91c0ef PP |
100 | return (uint64_t) range_set->ranges->len; |
101 | } | |
102 | ||
6769570a PP |
103 | const struct bt_integer_range_unsigned * |
104 | bt_integer_range_set_unsigned_borrow_range_by_index_const( | |
105 | const bt_integer_range_set_unsigned *u_range_set, | |
106 | uint64_t index) | |
fb91c0ef | 107 | { |
6769570a PP |
108 | const struct bt_integer_range_set *range_set = |
109 | (const void *) u_range_set; | |
fb91c0ef | 110 | |
6769570a | 111 | BT_ASSERT_PRE_DEV_NON_NULL(range_set, "Integer range set"); |
fb91c0ef | 112 | BT_ASSERT_PRE_DEV_VALID_INDEX(index, range_set->ranges->len); |
6769570a PP |
113 | return (const void *) BT_INTEGER_RANGE_SET_RANGE_AT_INDEX(range_set, |
114 | index); | |
fb91c0ef PP |
115 | } |
116 | ||
6769570a PP |
117 | const struct bt_integer_range_signed * |
118 | bt_integer_range_set_signed_borrow_range_by_index_const( | |
fb91c0ef PP |
119 | const bt_integer_range_set_signed *i_range_set, uint64_t index) |
120 | { | |
6769570a PP |
121 | const struct bt_integer_range_set *range_set = |
122 | (const void *) i_range_set; | |
fb91c0ef | 123 | |
6769570a | 124 | BT_ASSERT_PRE_DEV_NON_NULL(range_set, "Integer range set"); |
fb91c0ef | 125 | BT_ASSERT_PRE_DEV_VALID_INDEX(index, range_set->ranges->len); |
6769570a PP |
126 | return (const void *) BT_INTEGER_RANGE_SET_RANGE_AT_INDEX(range_set, |
127 | index); | |
fb91c0ef PP |
128 | } |
129 | ||
130 | static | |
131 | void destroy_range_set(struct bt_object *obj) | |
132 | { | |
133 | struct bt_integer_range_set *range_set = (void *) obj; | |
134 | ||
6769570a PP |
135 | BT_LIB_LOGD("Destroying integer range set: %!+R", range_set); |
136 | ||
fb91c0ef PP |
137 | if (range_set->ranges) { |
138 | g_array_free(range_set->ranges, TRUE); | |
139 | range_set->ranges = NULL; | |
140 | } | |
141 | ||
142 | g_free(range_set); | |
143 | } | |
144 | ||
145 | static | |
146 | struct bt_integer_range_set *create_range_set(void) | |
147 | { | |
6769570a PP |
148 | struct bt_integer_range_set *range_set; |
149 | ||
150 | BT_LOGD_STR("Creating empty integer range set."); | |
151 | range_set = g_new0(struct bt_integer_range_set, 1); | |
fb91c0ef PP |
152 | |
153 | if (!range_set) { | |
6769570a PP |
154 | BT_LIB_LOGE_APPEND_CAUSE( |
155 | "Failed to allocate one integer range set."); | |
fb91c0ef PP |
156 | goto error; |
157 | } | |
158 | ||
159 | bt_object_init_shared(&range_set->base, destroy_range_set); | |
160 | range_set->ranges = g_array_new(FALSE, TRUE, | |
161 | sizeof(struct bt_integer_range)); | |
162 | if (!range_set->ranges) { | |
163 | BT_LIB_LOGE_APPEND_CAUSE( | |
6769570a | 164 | "Failed to allocate integer range set's range array."); |
fb91c0ef PP |
165 | goto error; |
166 | } | |
167 | ||
6769570a | 168 | BT_LOGD_STR("Created empty integer range set."); |
fb91c0ef PP |
169 | goto end; |
170 | ||
171 | error: | |
172 | BT_OBJECT_PUT_REF_AND_RESET(range_set); | |
173 | ||
174 | end: | |
175 | return range_set; | |
176 | } | |
177 | ||
178 | struct bt_integer_range_set_unsigned *bt_integer_range_set_unsigned_create(void) | |
179 | { | |
180 | return (void *) create_range_set(); | |
181 | } | |
182 | ||
183 | struct bt_integer_range_set_signed *bt_integer_range_set_signed_create(void) | |
184 | { | |
185 | return (void *) create_range_set(); | |
186 | } | |
187 | ||
188 | void add_range_to_range_set(struct bt_integer_range_set *range_set, | |
189 | uint64_t u_lower, uint64_t u_upper) | |
190 | { | |
191 | struct bt_integer_range range = { | |
192 | .lower.u = u_lower, | |
193 | .upper.u = u_upper, | |
194 | }; | |
195 | ||
6769570a PP |
196 | BT_ASSERT_PRE_NON_NULL(range_set, "Integer range set"); |
197 | BT_ASSERT_PRE_DEV_HOT(range_set, "Integer range set", ": %!+R", | |
198 | range_set); | |
fb91c0ef | 199 | g_array_append_val(range_set->ranges, range); |
6769570a PP |
200 | BT_LIB_LOGD("Added integer range to integer range set: " |
201 | "%![range-set-]+R, lower-unsigned=%" PRIu64 ", " | |
202 | "upper-unsigned=%" PRIu64, range_set, u_lower, u_upper); | |
fb91c0ef PP |
203 | } |
204 | ||
6769570a PP |
205 | enum bt_integer_range_set_add_range_status |
206 | bt_integer_range_set_unsigned_add_range( | |
fb91c0ef PP |
207 | struct bt_integer_range_set_unsigned *range_set, |
208 | uint64_t lower, uint64_t upper) | |
209 | { | |
210 | BT_ASSERT_PRE(lower <= upper, | |
211 | "Range's upper bound is less than lower bound: " | |
212 | "upper=%" PRIu64 ", lower=%" PRIu64, lower, upper); | |
213 | add_range_to_range_set((void *) range_set, lower, upper); | |
214 | return BT_FUNC_STATUS_OK; | |
215 | } | |
216 | ||
6769570a PP |
217 | enum bt_integer_range_set_add_range_status |
218 | bt_integer_range_set_signed_add_range( | |
fb91c0ef PP |
219 | struct bt_integer_range_set_signed *range_set, |
220 | int64_t lower, int64_t upper) | |
221 | { | |
222 | BT_ASSERT_PRE(lower <= upper, | |
223 | "Range's upper bound is less than lower bound: " | |
224 | "upper=%" PRId64 ", lower=%" PRId64, lower, upper); | |
225 | add_range_to_range_set((void *) range_set, | |
226 | (int64_t) lower, (int64_t) upper); | |
227 | return BT_FUNC_STATUS_OK; | |
228 | } | |
229 | ||
230 | BT_HIDDEN | |
231 | void _bt_integer_range_set_freeze(const struct bt_integer_range_set *range_set) | |
232 | { | |
233 | BT_ASSERT(range_set); | |
6769570a | 234 | BT_LIB_LOGD("Freezing integer range set: %!+R", range_set); |
fb91c0ef PP |
235 | ((struct bt_integer_range_set *) range_set)->frozen = true; |
236 | } | |
237 | ||
238 | BT_HIDDEN | |
6769570a PP |
239 | bool bt_integer_range_set_unsigned_has_overlaps( |
240 | const struct bt_integer_range_set *range_set) | |
fb91c0ef PP |
241 | { |
242 | uint64_t i, j; | |
243 | bool has_overlap = false; | |
244 | ||
245 | BT_ASSERT(range_set); | |
246 | ||
247 | for (i = 0; i < range_set->ranges->len; i++) { | |
248 | const struct bt_integer_range *range_i = | |
249 | BT_INTEGER_RANGE_SET_RANGE_AT_INDEX(range_set, i); | |
250 | ||
251 | for (j = 0; j < range_set->ranges->len; j++) { | |
252 | const struct bt_integer_range *range_j = | |
6769570a PP |
253 | BT_INTEGER_RANGE_SET_RANGE_AT_INDEX( |
254 | range_set, j); | |
fb91c0ef PP |
255 | |
256 | if (i == j) { | |
257 | continue; | |
258 | } | |
259 | ||
260 | if (range_i->lower.u <= range_j->upper.u && | |
261 | range_j->lower.u <= range_i->upper.u) { | |
262 | has_overlap = true; | |
263 | goto end; | |
264 | } | |
265 | } | |
266 | } | |
267 | ||
268 | end: | |
269 | return has_overlap; | |
270 | } | |
271 | ||
272 | BT_HIDDEN | |
6769570a PP |
273 | bool bt_integer_range_set_signed_has_overlaps( |
274 | const struct bt_integer_range_set *range_set) | |
fb91c0ef PP |
275 | { |
276 | uint64_t i, j; | |
277 | bool has_overlap = false; | |
278 | ||
279 | BT_ASSERT(range_set); | |
280 | ||
281 | for (i = 0; i < range_set->ranges->len; i++) { | |
282 | const struct bt_integer_range *range_i = | |
283 | BT_INTEGER_RANGE_SET_RANGE_AT_INDEX(range_set, i); | |
284 | ||
285 | for (j = 0; j < range_set->ranges->len; j++) { | |
286 | const struct bt_integer_range *range_j = | |
6769570a PP |
287 | BT_INTEGER_RANGE_SET_RANGE_AT_INDEX( |
288 | range_set, j); | |
fb91c0ef PP |
289 | |
290 | if (i == j) { | |
291 | continue; | |
292 | } | |
293 | ||
294 | if (range_i->lower.i <= range_j->upper.i && | |
295 | range_j->lower.i <= range_i->upper.i) { | |
296 | has_overlap = true; | |
297 | goto end; | |
298 | } | |
299 | } | |
300 | } | |
301 | ||
302 | end: | |
303 | return has_overlap; | |
304 | } | |
305 | ||
306 | static | |
307 | bool compare_range_sets(const struct bt_integer_range_set *range_set_a, | |
308 | const struct bt_integer_range_set *range_set_b) | |
309 | { | |
310 | uint64_t a_i, b_i; | |
311 | bool is_equal = true; | |
312 | ||
313 | BT_ASSERT(range_set_a); | |
314 | BT_ASSERT(range_set_b); | |
315 | ||
316 | if (range_set_a == range_set_b) { | |
317 | goto end; | |
318 | } | |
319 | ||
320 | /* | |
321 | * Not super effective for the moment: do a O(N²) compare, also | |
322 | * checking that the sizes match. | |
323 | */ | |
324 | if (range_set_a->ranges->len != range_set_b->ranges->len) { | |
325 | is_equal = false; | |
326 | goto end; | |
327 | } | |
328 | ||
329 | for (a_i = 0; a_i < range_set_a->ranges->len; a_i++) { | |
330 | const struct bt_integer_range *range_a = | |
331 | BT_INTEGER_RANGE_SET_RANGE_AT_INDEX(range_set_a, | |
332 | a_i); | |
333 | bool b_has_range = false; | |
334 | ||
335 | for (b_i = 0; b_i < range_set_b->ranges->len; b_i++) { | |
336 | const struct bt_integer_range *range_b = | |
337 | BT_INTEGER_RANGE_SET_RANGE_AT_INDEX( | |
338 | range_set_b, b_i); | |
339 | ||
340 | if (compare_ranges(range_a, range_b)) { | |
341 | b_has_range = true; | |
342 | break; | |
343 | } | |
344 | } | |
345 | ||
346 | if (!b_has_range) { | |
347 | is_equal = false; | |
348 | goto end; | |
349 | } | |
350 | } | |
351 | ||
352 | end: | |
353 | return is_equal; | |
354 | } | |
355 | ||
356 | bt_bool bt_integer_range_set_unsigned_compare( | |
357 | const struct bt_integer_range_set_unsigned *range_set_a, | |
358 | const struct bt_integer_range_set_unsigned *range_set_b) | |
359 | { | |
360 | BT_ASSERT_PRE_DEV_NON_NULL(range_set_a, "Range set A"); | |
361 | BT_ASSERT_PRE_DEV_NON_NULL(range_set_b, "Range set B"); | |
362 | return (bt_bool) compare_range_sets((const void *) range_set_a, | |
363 | (const void *) range_set_b); | |
364 | } | |
365 | ||
366 | bt_bool bt_integer_range_set_signed_compare( | |
367 | const struct bt_integer_range_set_signed *range_set_a, | |
368 | const struct bt_integer_range_set_signed *range_set_b) | |
369 | { | |
370 | BT_ASSERT_PRE_DEV_NON_NULL(range_set_a, "Range set A"); | |
371 | BT_ASSERT_PRE_DEV_NON_NULL(range_set_b, "Range set B"); | |
372 | return (bt_bool) compare_range_sets((const void *) range_set_a, | |
373 | (const void *) range_set_b); | |
374 | } | |
375 | ||
376 | void bt_integer_range_set_unsigned_get_ref( | |
377 | const struct bt_integer_range_set_unsigned *range_set) | |
378 | { | |
379 | bt_object_get_ref(range_set); | |
380 | } | |
381 | ||
382 | void bt_integer_range_set_unsigned_put_ref( | |
383 | const struct bt_integer_range_set_unsigned *range_set) | |
384 | { | |
385 | bt_object_put_ref(range_set); | |
386 | } | |
387 | ||
6769570a PP |
388 | void bt_integer_range_set_signed_get_ref( |
389 | const struct bt_integer_range_set_signed *range_set) | |
fb91c0ef PP |
390 | { |
391 | bt_object_get_ref(range_set); | |
392 | } | |
393 | ||
6769570a PP |
394 | void bt_integer_range_set_signed_put_ref( |
395 | const struct bt_integer_range_set_signed *range_set) | |
fb91c0ef PP |
396 | { |
397 | bt_object_put_ref(range_set); | |
398 | } |