| 1 | #include "page.h" |
| 2 | #include "page_test.h" |
| 3 | |
| 4 | #ifdef HAVE_GTEST |
| 5 | |
| 6 | #include <gtest/gtest.h> |
| 7 | #include <limits> |
| 8 | #include <random> |
| 9 | |
| 10 | bool operator==(const STORAGE_POINT lhs, const STORAGE_POINT rhs) { |
| 11 | if (lhs.min != rhs.min) |
| 12 | return false; |
| 13 | |
| 14 | if (lhs.max != rhs.max) |
| 15 | return false; |
| 16 | |
| 17 | if (lhs.sum != rhs.sum) |
| 18 | return false; |
| 19 | |
| 20 | if (lhs.start_time_s != rhs.start_time_s) |
| 21 | return false; |
| 22 | |
| 23 | if (lhs.end_time_s != rhs.end_time_s) |
| 24 | return false; |
| 25 | |
| 26 | if (lhs.count != rhs.count) |
| 27 | return false; |
| 28 | |
| 29 | if (lhs.flags != rhs.flags) |
| 30 | return false; |
| 31 | |
| 32 | return true; |
| 33 | } |
| 34 | |
| 35 | // TODO: use value-parameterized tests |
| 36 | // http://google.github.io/googletest/advanced.html#value-parameterized-tests |
| 37 | static uint8_t page_type = PAGE_GORILLA_METRICS; |
| 38 | |
| 39 | static size_t slots_for_page(size_t n) { |
| 40 | switch (page_type) { |
| 41 | case PAGE_METRICS: |
| 42 | return 1024; |
| 43 | case PAGE_GORILLA_METRICS: |
| 44 | return n; |
| 45 | default: |
| 46 | fatal("Slots requested for unsupported page: %uc", page_type); |
| 47 | } |
| 48 | } |
| 49 | |
| 50 | TEST(PGD, EmptyOrNull) { |
| 51 | PGD *pg = NULL; |
| 52 | |
| 53 | PGDC cursor; |
| 54 | STORAGE_POINT sp; |
| 55 | |
| 56 | EXPECT_TRUE(pgd_is_empty(pg)); |
| 57 | EXPECT_EQ(pgd_slots_used(pg), 0); |
| 58 | EXPECT_EQ(pgd_memory_footprint(pg), 0); |
| 59 | EXPECT_EQ(pgd_disk_footprint(pg), 0); |
| 60 | |
| 61 | pgdc_reset(&cursor, pg, 0); |
| 62 | EXPECT_FALSE(pgdc_get_next_point(&cursor, 0, &sp)); |
| 63 | |
| 64 | pgd_free(pg); |
| 65 | |
| 66 | pg = PGD_EMPTY; |
| 67 | |
| 68 | EXPECT_TRUE(pgd_is_empty(pg)); |
| 69 | EXPECT_EQ(pgd_slots_used(pg), 0); |
| 70 | EXPECT_EQ(pgd_memory_footprint(pg), 0); |
| 71 | EXPECT_EQ(pgd_disk_footprint(pg), 0); |
| 72 | EXPECT_FALSE(pgdc_get_next_point(&cursor, 0, &sp)); |
| 73 | |
| 74 | pgdc_reset(&cursor, pg, 0); |
| 75 | EXPECT_FALSE(pgdc_get_next_point(&cursor, 0, &sp)); |
| 76 | |
| 77 | pgd_free(pg); |
| 78 | } |
| 79 | |
| 80 | TEST(PGD, Create) { |
| 81 | size_t slots = slots_for_page(1024 * 1024); |
| 82 | PGD *pg = pgd_create(page_type, slots); |
| 83 | |
| 84 | EXPECT_EQ(pgd_type(pg), page_type); |
| 85 | EXPECT_TRUE(pgd_is_empty(pg)); |
| 86 | EXPECT_EQ(pgd_slots_used(pg), 0); |
| 87 | |
| 88 | for (size_t i = 0; i != slots; i++) { |
| 89 | pgd_append_point(pg, i, i, 0, 0, 1, 1, SN_DEFAULT_FLAGS, i); |
| 90 | EXPECT_FALSE(pgd_is_empty(pg)); |
| 91 | } |
| 92 | EXPECT_EQ(pgd_slots_used(pg), slots); |
| 93 | |
| 94 | EXPECT_DEATH( |
| 95 | pgd_append_point(pg, slots, slots, 0, 0, 1, 1, SN_DEFAULT_FLAGS, slots), |
| 96 | ".*" |
| 97 | ); |
| 98 | |
| 99 | pgd_free(pg); |
| 100 | } |
| 101 | |
| 102 | TEST(PGD, CursorFullPage) { |
| 103 | size_t slots = slots_for_page(1024 * 1024); |
| 104 | PGD *pg = pgd_create(page_type, slots); |
| 105 | |
| 106 | for (size_t slot = 0; slot != slots; slot++) |
| 107 | pgd_append_point(pg, slot, slot, 0, 0, 1, 1, SN_DEFAULT_FLAGS, slot); |
| 108 | |
| 109 | for (size_t i = 0; i != 2; i++) { |
| 110 | PGDC cursor; |
| 111 | pgdc_reset(&cursor, pg, 0); |
| 112 | |
| 113 | STORAGE_POINT sp; |
| 114 | for (size_t slot = 0; slot != slots; slot++) { |
| 115 | EXPECT_TRUE(pgdc_get_next_point(&cursor, slot, &sp)); |
| 116 | |
| 117 | EXPECT_EQ(slot, static_cast<size_t>(sp.min)); |
| 118 | EXPECT_EQ(sp.min, sp.max); |
| 119 | EXPECT_EQ(sp.min, sp.sum); |
| 120 | EXPECT_EQ(sp.count, 1); |
| 121 | EXPECT_EQ(sp.anomaly_count, 0); |
| 122 | } |
| 123 | |
| 124 | EXPECT_FALSE(pgdc_get_next_point(&cursor, slots, &sp)); |
| 125 | } |
| 126 | |
| 127 | for (size_t i = 0; i != 2; i++) { |
| 128 | PGDC cursor; |
| 129 | pgdc_reset(&cursor, pg, slots / 2); |
| 130 | |
| 131 | STORAGE_POINT sp; |
| 132 | for (size_t slot = slots / 2; slot != slots; slot++) { |
| 133 | EXPECT_TRUE(pgdc_get_next_point(&cursor, slot, &sp)); |
| 134 | |
| 135 | EXPECT_EQ(slot, static_cast<size_t>(sp.min)); |
| 136 | EXPECT_EQ(sp.min, sp.max); |
| 137 | EXPECT_EQ(sp.min, sp.sum); |
| 138 | EXPECT_EQ(sp.count, 1); |
| 139 | EXPECT_EQ(sp.anomaly_count, 0); |
| 140 | } |
| 141 | |
| 142 | EXPECT_FALSE(pgdc_get_next_point(&cursor, slots, &sp)); |
| 143 | } |
| 144 | |
| 145 | // out of bounds seek |
| 146 | { |
| 147 | PGDC cursor; |
| 148 | pgdc_reset(&cursor, pg, 2 * slots); |
| 149 | |
| 150 | STORAGE_POINT sp; |
| 151 | EXPECT_FALSE(pgdc_get_next_point(&cursor, 2 * slots, &sp)); |
| 152 | } |
| 153 | |
| 154 | pgd_free(pg); |
| 155 | } |
| 156 | |
| 157 | TEST(PGD, CursorHalfPage) { |
| 158 | size_t slots = slots_for_page(1024 * 1024); |
| 159 | PGD *pg = pgd_create(page_type, slots); |
| 160 | |
| 161 | PGDC cursor; |
| 162 | STORAGE_POINT sp; |
| 163 | |
| 164 | // fill the 1st half of the page |
| 165 | for (size_t slot = 0; slot != slots / 2; slot++) |
| 166 | pgd_append_point(pg, slot, slot, 0, 0, 1, 1, SN_DEFAULT_FLAGS, slot); |
| 167 | |
| 168 | pgdc_reset(&cursor, pg, 0); |
| 169 | |
| 170 | for (size_t slot = 0; slot != slots / 2; slot++) { |
| 171 | EXPECT_TRUE(pgdc_get_next_point(&cursor, slot, &sp)); |
| 172 | |
| 173 | EXPECT_EQ(slot, static_cast<size_t>(sp.min)); |
| 174 | EXPECT_EQ(sp.min, sp.max); |
| 175 | EXPECT_EQ(sp.min, sp.sum); |
| 176 | EXPECT_EQ(sp.count, 1); |
| 177 | EXPECT_EQ(sp.anomaly_count, 0); |
| 178 | } |
| 179 | EXPECT_FALSE(pgdc_get_next_point(&cursor, slots / 2, &sp)); |
| 180 | |
| 181 | // reset pgdc to the end of the page, we should not be getting more |
| 182 | // points even if the page has grown in between. |
| 183 | |
| 184 | pgdc_reset(&cursor, pg, slots / 2); |
| 185 | |
| 186 | for (size_t slot = slots / 2; slot != slots; slot++) |
| 187 | pgd_append_point(pg, slot, slot, 0, 0, 1, 1, SN_DEFAULT_FLAGS, slot); |
| 188 | |
| 189 | for (size_t slot = slots / 2; slot != slots; slot++) |
| 190 | EXPECT_FALSE(pgdc_get_next_point(&cursor, slot, &sp)); |
| 191 | |
| 192 | EXPECT_FALSE(pgdc_get_next_point(&cursor, slots, &sp)); |
| 193 | |
| 194 | pgd_free(pg); |
| 195 | } |
| 196 | |
| 197 | TEST(PGD, MemoryFootprint) { |
| 198 | size_t slots = slots_for_page(1024 * 1024); |
| 199 | PGD *pg = pgd_create(page_type, slots); |
| 200 | |
| 201 | uint32_t footprint = 0; |
| 202 | switch (pgd_type(pg)) { |
| 203 | case PAGE_METRICS: |
| 204 | footprint = slots * sizeof(uint32_t); |
| 205 | break; |
| 206 | case PAGE_GORILLA_METRICS: |
| 207 | footprint = 128 * sizeof(uint32_t); |
| 208 | break; |
| 209 | default: |
| 210 | fatal("Uknown page type: %uc", pgd_type(pg)); |
| 211 | } |
| 212 | EXPECT_NEAR(pgd_memory_footprint(pg), footprint, 128); |
| 213 | |
| 214 | std::random_device rand_dev; |
| 215 | std::mt19937 gen(rand_dev()); |
| 216 | std::uniform_int_distribution<uint32_t> distr(std::numeric_limits<uint32_t>::min(), |
| 217 | std::numeric_limits<uint32_t>::max()); // define the range |
| 218 | |
| 219 | for (size_t slot = 0; slot != slots; slot++) { |
| 220 | uint32_t n = distr(gen); |
| 221 | pgd_append_point(pg, slot, n, 0, 0, 1, 1, SN_DEFAULT_FLAGS, slot); |
| 222 | } |
| 223 | |
| 224 | footprint = slots * sizeof(uint32_t); |
| 225 | |
| 226 | uint32_t abs_error = 0; |
| 227 | switch (pgd_type(pg)) { |
| 228 | case PAGE_METRICS: |
| 229 | abs_error = 128; |
| 230 | break; |
| 231 | case PAGE_GORILLA_METRICS: |
| 232 | abs_error = footprint / 10; |
| 233 | break; |
| 234 | default: |
| 235 | fatal("Uknown page type: %uc", pgd_type(pg)); |
| 236 | } |
| 237 | |
| 238 | EXPECT_NEAR(pgd_memory_footprint(pg), footprint, abs_error); |
| 239 | } |
| 240 | |
| 241 | TEST(PGD, DiskFootprint) { |
| 242 | size_t slots = slots_for_page(1024 * 1024); |
| 243 | PGD *pg = pgd_create(page_type, slots); |
| 244 | |
| 245 | std::random_device rand_dev; |
| 246 | std::mt19937 gen(rand_dev()); |
| 247 | std::uniform_int_distribution<uint32_t> distr(std::numeric_limits<uint32_t>::min(), |
| 248 | std::numeric_limits<uint32_t>::max()); // define the range |
| 249 | |
| 250 | size_t used_slots = 16; |
| 251 | |
| 252 | for (size_t slot = 0; slot != used_slots; slot++) { |
| 253 | uint32_t n = distr(gen); |
| 254 | pgd_append_point(pg, slot, n, 0, 0, 1, 1, SN_DEFAULT_FLAGS, slot); |
| 255 | } |
| 256 | |
| 257 | uint32_t footprint = 0; |
| 258 | switch (pgd_type(pg)) { |
| 259 | case PAGE_METRICS: |
| 260 | footprint = used_slots * sizeof(uint32_t); |
| 261 | break; |
| 262 | case PAGE_GORILLA_METRICS: |
| 263 | footprint = 128 * sizeof(uint32_t); |
| 264 | break; |
| 265 | default: |
| 266 | fatal("Uknown page type: %uc", pgd_type(pg)); |
| 267 | } |
| 268 | EXPECT_EQ(pgd_disk_footprint(pg), footprint); |
| 269 | |
| 270 | pgd_free(pg); |
| 271 | |
| 272 | pg = pgd_create(page_type, slots); |
| 273 | |
| 274 | used_slots = 128 + 64; |
| 275 | |
| 276 | for (size_t slot = 0; slot != used_slots; slot++) { |
| 277 | uint32_t n = distr(gen); |
| 278 | pgd_append_point(pg, slot, n, 0, 0, 1, 1, SN_DEFAULT_FLAGS, slot); |
| 279 | } |
| 280 | |
| 281 | switch (pgd_type(pg)) { |
| 282 | case PAGE_METRICS: |
| 283 | footprint = used_slots * sizeof(uint32_t); |
| 284 | break; |
| 285 | case PAGE_GORILLA_METRICS: |
| 286 | footprint = 2 * (128 * sizeof(uint32_t)); |
| 287 | break; |
| 288 | default: |
| 289 | fatal("Uknown page type: %uc", pgd_type(pg)); |
| 290 | } |
| 291 | EXPECT_EQ(pgd_disk_footprint(pg), footprint); |
| 292 | |
| 293 | pgd_free(pg); |
| 294 | } |
| 295 | |
| 296 | TEST(PGD, CopyToExtent) { |
| 297 | size_t slots = slots_for_page(1024 * 1024); |
| 298 | PGD *pg_collector = pgd_create(page_type, slots); |
| 299 | |
| 300 | uint32_t value = 666; |
| 301 | pgd_append_point(pg_collector, 0, value, 0, 0, 1, 0, SN_DEFAULT_FLAGS, 0); |
| 302 | |
| 303 | uint32_t size_in_bytes = pgd_disk_footprint(pg_collector); |
| 304 | EXPECT_EQ(size_in_bytes, 512); |
| 305 | |
| 306 | uint32_t size_in_words = size_in_bytes / sizeof(uint32_t); |
| 307 | alignas(sizeof(uintptr_t)) uint32_t disk_buffer[size_in_words]; |
| 308 | |
| 309 | for (size_t i = 0; i != size_in_words; i++) { |
| 310 | disk_buffer[i] = std::numeric_limits<uint32_t>::max(); |
| 311 | } |
| 312 | |
| 313 | pgd_copy_to_extent(pg_collector, (uint8_t *) &disk_buffer[0], size_in_bytes); |
| 314 | |
| 315 | EXPECT_EQ(disk_buffer[0], NULL); |
| 316 | EXPECT_EQ(disk_buffer[1], NULL); |
| 317 | EXPECT_EQ(disk_buffer[2], 1); |
| 318 | EXPECT_EQ(disk_buffer[3], 32); |
| 319 | storage_number sn = pack_storage_number(value, SN_DEFAULT_FLAGS); |
| 320 | EXPECT_EQ(disk_buffer[4], sn); |
| 321 | |
| 322 | // make sure the rest of the page is 0'ed so that it's amenable to compression |
| 323 | for (size_t i = 5; i != size_in_words; i++) |
| 324 | EXPECT_EQ(disk_buffer[i], 0); |
| 325 | |
| 326 | pgd_free(pg_collector); |
| 327 | } |
| 328 | |
| 329 | TEST(PGD, Roundtrip) { |
| 330 | size_t slots = slots_for_page(1024 * 1024); |
| 331 | PGD *pg_collector = pgd_create(page_type, slots); |
| 332 | |
| 333 | for (size_t i = 0; i != slots; i++) |
| 334 | pgd_append_point(pg_collector, i, i, 0, 0, 1, 1, SN_DEFAULT_FLAGS, i); |
| 335 | |
| 336 | uint32_t size_in_bytes = pgd_disk_footprint(pg_collector); |
| 337 | uint32_t size_in_words = size_in_bytes / sizeof(uint32_t); |
| 338 | |
| 339 | alignas(sizeof(uintptr_t)) uint32_t disk_buffer[size_in_words]; |
| 340 | for (size_t i = 0; i != size_in_words; i++) |
| 341 | disk_buffer[i] = std::numeric_limits<uint32_t>::max(); |
| 342 | |
| 343 | pgd_copy_to_extent(pg_collector, (uint8_t *) &disk_buffer[0], size_in_bytes); |
| 344 | |
| 345 | PGD *pg_disk = pgd_create_from_disk_data(page_type, &disk_buffer[0], size_in_bytes); |
| 346 | EXPECT_EQ(pgd_slots_used(pg_disk), slots); |
| 347 | |
| 348 | // Expected memory footprint is equal to the disk footprint + a couple |
| 349 | // bytes for the PGD metadata. |
| 350 | EXPECT_NEAR(pgd_memory_footprint(pg_disk), size_in_bytes, 128); |
| 351 | |
| 352 | // Do not allow calling disk footprint for pages created from disk. |
| 353 | EXPECT_DEATH(pgd_disk_footprint(pg_disk), ".*"); |
| 354 | |
| 355 | for (size_t i = 0; i != 10; i++) { |
| 356 | PGDC cursor_collector; |
| 357 | PGDC cursor_disk; |
| 358 | |
| 359 | pgdc_reset(&cursor_collector, pg_collector, i * 1024); |
| 360 | pgdc_reset(&cursor_disk, pg_disk, i * 1024); |
| 361 | |
| 362 | STORAGE_POINT sp_collector = {}; |
| 363 | STORAGE_POINT sp_disk = {}; |
| 364 | |
| 365 | for (size_t slot = i * 1024; slot != slots; slot++) { |
| 366 | EXPECT_TRUE(pgdc_get_next_point(&cursor_collector, slot, &sp_collector)); |
| 367 | EXPECT_TRUE(pgdc_get_next_point(&cursor_disk, slot, &sp_disk)); |
| 368 | |
| 369 | EXPECT_EQ(sp_collector, sp_disk); |
| 370 | } |
| 371 | |
| 372 | EXPECT_FALSE(pgdc_get_next_point(&cursor_collector, slots, &sp_collector)); |
| 373 | EXPECT_FALSE(pgdc_get_next_point(&cursor_disk, slots, &sp_disk)); |
| 374 | } |
| 375 | |
| 376 | pgd_free(pg_disk); |
| 377 | pgd_free(pg_collector); |
| 378 | } |
| 379 | |
| 380 | int pgd_test(int argc, char *argv[]) |
| 381 | { |
| 382 | // Dummy/necessary initialization stuff |
| 383 | PGC *dummy_cache = pgc_create("pgd-tests-cache", 32 * 1024 * 1024, NULL, 64, NULL, NULL, |
| 384 | 10, 10, 1000, 10, PGC_OPTIONS_NONE, 1, 11); |
| 385 | pgd_init_arals(); |
| 386 | |
| 387 | ::testing::InitGoogleTest(&argc, argv); |
| 388 | int rc = RUN_ALL_TESTS(); |
| 389 | |
| 390 | pgc_destroy(dummy_cache); |
| 391 | |
| 392 | return rc; |
| 393 | } |
| 394 | |
| 395 | #else // HAVE_GTEST |
| 396 | |
| 397 | int pgd_test(int argc, char *argv[]) |
| 398 | { |
| 399 | (void) argc; |
| 400 | (void) argv; |
| 401 | fprintf(stderr, "Can not run PGD tests because the agent was not build with support for google tests.\n"); |
| 402 | return 0; |
| 403 | } |
| 404 | |
| 405 | #endif // HAVE_GTEST |