| 1 | /* |
| 2 | * SPDX-License-Identifier: MIT |
| 3 | * |
| 4 | * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com> |
| 5 | * Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
| 6 | */ |
| 7 | |
| 8 | #define BT_LOG_TAG "LIB/CLOCK-CLASS" |
| 9 | #include "lib/logging.h" |
| 10 | |
| 11 | #include "lib/assert-cond.h" |
| 12 | #include "common/uuid.h" |
| 13 | #include <babeltrace2/trace-ir/clock-class.h> |
| 14 | #include "clock-class.h" |
| 15 | #include "clock-snapshot.h" |
| 16 | #include "utils.h" |
| 17 | #include "compat/compiler.h" |
| 18 | #include <babeltrace2/types.h> |
| 19 | #include <inttypes.h> |
| 20 | #include <stdbool.h> |
| 21 | #include "lib/object.h" |
| 22 | #include "common/assert.h" |
| 23 | #include "lib/func-status.h" |
| 24 | #include "lib/value.h" |
| 25 | |
| 26 | #define BT_ASSERT_PRE_DEV_CLOCK_CLASS_HOT(_cc) \ |
| 27 | BT_ASSERT_PRE_DEV_HOT("clock-class", (_cc), "Clock class", \ |
| 28 | ": %!+K", (_cc)) |
| 29 | |
| 30 | static |
| 31 | void destroy_clock_class(struct bt_object *obj) |
| 32 | { |
| 33 | struct bt_clock_class *clock_class = (void *) obj; |
| 34 | |
| 35 | BT_LIB_LOGD("Destroying clock class: %!+K", clock_class); |
| 36 | BT_OBJECT_PUT_REF_AND_RESET(clock_class->user_attributes); |
| 37 | |
| 38 | g_free(clock_class->name); |
| 39 | g_free(clock_class->description); |
| 40 | bt_object_pool_finalize(&clock_class->cs_pool); |
| 41 | g_free(clock_class); |
| 42 | } |
| 43 | |
| 44 | static |
| 45 | void free_clock_snapshot(struct bt_clock_snapshot *clock_snapshot, |
| 46 | struct bt_clock_class *clock_class __attribute__((unused))) |
| 47 | { |
| 48 | bt_clock_snapshot_destroy(clock_snapshot); |
| 49 | } |
| 50 | |
| 51 | static inline |
| 52 | void set_base_offset(struct bt_clock_class *clock_class) |
| 53 | { |
| 54 | clock_class->base_offset.overflows = bt_util_get_base_offset_ns( |
| 55 | clock_class->offset_seconds, clock_class->offset_cycles, |
| 56 | clock_class->frequency, &clock_class->base_offset.value_ns); |
| 57 | } |
| 58 | |
| 59 | BT_EXPORT |
| 60 | struct bt_clock_class *bt_clock_class_create(bt_self_component *self_comp) |
| 61 | { |
| 62 | int ret; |
| 63 | struct bt_clock_class *clock_class = NULL; |
| 64 | |
| 65 | BT_ASSERT_PRE_NO_ERROR(); |
| 66 | BT_ASSERT_PRE_COMP_NON_NULL(self_comp); |
| 67 | BT_LOGD_STR("Creating default clock class object"); |
| 68 | |
| 69 | clock_class = g_new0(struct bt_clock_class, 1); |
| 70 | if (!clock_class) { |
| 71 | BT_LIB_LOGE_APPEND_CAUSE("Failed to allocate one clock class."); |
| 72 | goto error; |
| 73 | } |
| 74 | |
| 75 | bt_object_init_shared(&clock_class->base, destroy_clock_class); |
| 76 | |
| 77 | clock_class->user_attributes = bt_value_map_create(); |
| 78 | if (!clock_class->user_attributes) { |
| 79 | BT_LIB_LOGE_APPEND_CAUSE( |
| 80 | "Failed to create a map value object."); |
| 81 | goto error; |
| 82 | } |
| 83 | |
| 84 | clock_class->frequency = UINT64_C(1000000000); |
| 85 | clock_class->origin_is_unix_epoch = BT_TRUE; |
| 86 | set_base_offset(clock_class); |
| 87 | ret = bt_object_pool_initialize(&clock_class->cs_pool, |
| 88 | (bt_object_pool_new_object_func) bt_clock_snapshot_new, |
| 89 | (bt_object_pool_destroy_object_func) |
| 90 | free_clock_snapshot, |
| 91 | clock_class); |
| 92 | if (ret) { |
| 93 | BT_LIB_LOGE_APPEND_CAUSE( |
| 94 | "Failed to initialize clock snapshot pool: ret=%d", |
| 95 | ret); |
| 96 | goto error; |
| 97 | } |
| 98 | |
| 99 | BT_LIB_LOGD("Created clock class object: %!+K", clock_class); |
| 100 | goto end; |
| 101 | |
| 102 | error: |
| 103 | BT_OBJECT_PUT_REF_AND_RESET(clock_class); |
| 104 | |
| 105 | end: |
| 106 | return clock_class; |
| 107 | } |
| 108 | |
| 109 | BT_EXPORT |
| 110 | const char *bt_clock_class_get_name(const struct bt_clock_class *clock_class) |
| 111 | { |
| 112 | BT_ASSERT_PRE_DEV_CLK_CLS_NON_NULL(clock_class); |
| 113 | return clock_class->name; |
| 114 | } |
| 115 | |
| 116 | BT_EXPORT |
| 117 | enum bt_clock_class_set_name_status bt_clock_class_set_name( |
| 118 | struct bt_clock_class *clock_class, const char *name) |
| 119 | { |
| 120 | BT_ASSERT_PRE_NO_ERROR(); |
| 121 | BT_ASSERT_PRE_CLK_CLS_NON_NULL(clock_class); |
| 122 | BT_ASSERT_PRE_NAME_NON_NULL(name); |
| 123 | BT_ASSERT_PRE_DEV_CLOCK_CLASS_HOT(clock_class); |
| 124 | g_free(clock_class->name); |
| 125 | clock_class->name = g_strdup(name); |
| 126 | BT_LIB_LOGD("Set clock class's name: %!+K", clock_class); |
| 127 | return BT_FUNC_STATUS_OK; |
| 128 | } |
| 129 | |
| 130 | BT_EXPORT |
| 131 | const char *bt_clock_class_get_description( |
| 132 | const struct bt_clock_class *clock_class) |
| 133 | { |
| 134 | BT_ASSERT_PRE_DEV_CLK_CLS_NON_NULL(clock_class); |
| 135 | return clock_class->description; |
| 136 | } |
| 137 | |
| 138 | BT_EXPORT |
| 139 | enum bt_clock_class_set_description_status bt_clock_class_set_description( |
| 140 | struct bt_clock_class *clock_class, const char *descr) |
| 141 | { |
| 142 | BT_ASSERT_PRE_NO_ERROR(); |
| 143 | BT_ASSERT_PRE_CLK_CLS_NON_NULL(clock_class); |
| 144 | BT_ASSERT_PRE_DESCR_NON_NULL(descr); |
| 145 | BT_ASSERT_PRE_DEV_CLOCK_CLASS_HOT(clock_class); |
| 146 | g_free(clock_class->description); |
| 147 | clock_class->description = g_strdup(descr); |
| 148 | BT_LIB_LOGD("Set clock class's description: %!+K", |
| 149 | clock_class); |
| 150 | return BT_FUNC_STATUS_OK; |
| 151 | } |
| 152 | |
| 153 | BT_EXPORT |
| 154 | uint64_t bt_clock_class_get_frequency(const struct bt_clock_class *clock_class) |
| 155 | { |
| 156 | BT_ASSERT_PRE_DEV_CLK_CLS_NON_NULL(clock_class); |
| 157 | return clock_class->frequency; |
| 158 | } |
| 159 | |
| 160 | BT_EXPORT |
| 161 | void bt_clock_class_set_frequency(struct bt_clock_class *clock_class, |
| 162 | uint64_t frequency) |
| 163 | { |
| 164 | BT_ASSERT_PRE_CLK_CLS_NON_NULL(clock_class); |
| 165 | BT_ASSERT_PRE_DEV_CLOCK_CLASS_HOT(clock_class); |
| 166 | BT_ASSERT_PRE("valid-frequency", |
| 167 | frequency != UINT64_C(-1) && frequency != 0, |
| 168 | "Invalid frequency: %![cc-]+K, new-freq=%" PRIu64, |
| 169 | clock_class, frequency); |
| 170 | BT_ASSERT_PRE("offset-cycles-lt-frequency", |
| 171 | clock_class->offset_cycles < frequency, |
| 172 | "Offset (cycles) is greater than clock class's frequency: " |
| 173 | "%![cc-]+K, new-freq=%" PRIu64, clock_class, frequency); |
| 174 | clock_class->frequency = frequency; |
| 175 | set_base_offset(clock_class); |
| 176 | BT_LIB_LOGD("Set clock class's frequency: %!+K", clock_class); |
| 177 | } |
| 178 | |
| 179 | BT_EXPORT |
| 180 | uint64_t bt_clock_class_get_precision(const struct bt_clock_class *clock_class) |
| 181 | { |
| 182 | BT_ASSERT_PRE_DEV_CLK_CLS_NON_NULL(clock_class); |
| 183 | return clock_class->precision; |
| 184 | } |
| 185 | |
| 186 | BT_EXPORT |
| 187 | void bt_clock_class_set_precision(struct bt_clock_class *clock_class, |
| 188 | uint64_t precision) |
| 189 | { |
| 190 | BT_ASSERT_PRE_CLK_CLS_NON_NULL(clock_class); |
| 191 | BT_ASSERT_PRE_DEV_CLOCK_CLASS_HOT(clock_class); |
| 192 | BT_ASSERT_PRE("valid-precision", precision != UINT64_C(-1), |
| 193 | "Invalid precision: %![cc-]+K, new-precision=%" PRIu64, |
| 194 | clock_class, precision); |
| 195 | clock_class->precision = precision; |
| 196 | BT_LIB_LOGD("Set clock class's precision: %!+K", clock_class); |
| 197 | } |
| 198 | |
| 199 | BT_EXPORT |
| 200 | void bt_clock_class_get_offset(const struct bt_clock_class *clock_class, |
| 201 | int64_t *seconds, uint64_t *cycles) |
| 202 | { |
| 203 | BT_ASSERT_PRE_DEV_CLK_CLS_NON_NULL(clock_class); |
| 204 | BT_ASSERT_PRE_DEV_NON_NULL("seconds-output", seconds, |
| 205 | "Seconds (output)"); |
| 206 | BT_ASSERT_PRE_DEV_NON_NULL("cycles-output", cycles, "Cycles (output)"); |
| 207 | *seconds = clock_class->offset_seconds; |
| 208 | *cycles = clock_class->offset_cycles; |
| 209 | } |
| 210 | |
| 211 | BT_EXPORT |
| 212 | void bt_clock_class_set_offset(struct bt_clock_class *clock_class, |
| 213 | int64_t seconds, uint64_t cycles) |
| 214 | { |
| 215 | BT_ASSERT_PRE_CLK_CLS_NON_NULL(clock_class); |
| 216 | BT_ASSERT_PRE_DEV_CLOCK_CLASS_HOT(clock_class); |
| 217 | BT_ASSERT_PRE("offset-cycles-lt-frequency", |
| 218 | cycles < clock_class->frequency, |
| 219 | "Offset (cycles) is greater than clock class's frequency: " |
| 220 | "%![cc-]+K, new-offset-cycles=%" PRIu64, clock_class, cycles); |
| 221 | clock_class->offset_seconds = seconds; |
| 222 | clock_class->offset_cycles = cycles; |
| 223 | set_base_offset(clock_class); |
| 224 | BT_LIB_LOGD("Set clock class's offset: %!+K", clock_class); |
| 225 | } |
| 226 | |
| 227 | BT_EXPORT |
| 228 | bt_bool bt_clock_class_origin_is_unix_epoch(const struct bt_clock_class *clock_class) |
| 229 | { |
| 230 | BT_ASSERT_PRE_DEV_CLK_CLS_NON_NULL(clock_class); |
| 231 | return (bool) clock_class->origin_is_unix_epoch; |
| 232 | } |
| 233 | |
| 234 | BT_EXPORT |
| 235 | void bt_clock_class_set_origin_is_unix_epoch(struct bt_clock_class *clock_class, |
| 236 | bt_bool origin_is_unix_epoch) |
| 237 | { |
| 238 | BT_ASSERT_PRE_CLK_CLS_NON_NULL(clock_class); |
| 239 | BT_ASSERT_PRE_DEV_CLOCK_CLASS_HOT(clock_class); |
| 240 | clock_class->origin_is_unix_epoch = (bool) origin_is_unix_epoch; |
| 241 | BT_LIB_LOGD("Set clock class's origin is Unix epoch property: %!+K", |
| 242 | clock_class); |
| 243 | } |
| 244 | |
| 245 | BT_EXPORT |
| 246 | bt_uuid bt_clock_class_get_uuid(const struct bt_clock_class *clock_class) |
| 247 | { |
| 248 | BT_ASSERT_PRE_DEV_CLK_CLS_NON_NULL(clock_class); |
| 249 | return clock_class->uuid.value; |
| 250 | } |
| 251 | |
| 252 | BT_EXPORT |
| 253 | void bt_clock_class_set_uuid(struct bt_clock_class *clock_class, |
| 254 | bt_uuid uuid) |
| 255 | { |
| 256 | BT_ASSERT_PRE_CLK_CLS_NON_NULL(clock_class); |
| 257 | BT_ASSERT_PRE_UUID_NON_NULL(uuid); |
| 258 | BT_ASSERT_PRE_DEV_CLOCK_CLASS_HOT(clock_class); |
| 259 | bt_uuid_copy(clock_class->uuid.uuid, uuid); |
| 260 | clock_class->uuid.value = clock_class->uuid.uuid; |
| 261 | BT_LIB_LOGD("Set clock class's UUID: %!+K", clock_class); |
| 262 | } |
| 263 | |
| 264 | void _bt_clock_class_freeze(const struct bt_clock_class *clock_class) |
| 265 | { |
| 266 | BT_ASSERT(clock_class); |
| 267 | |
| 268 | if (clock_class->frozen) { |
| 269 | return; |
| 270 | } |
| 271 | |
| 272 | BT_LIB_LOGD("Freezing clock class's user attributes: %!+v", |
| 273 | clock_class->user_attributes); |
| 274 | bt_value_freeze(clock_class->user_attributes); |
| 275 | BT_LIB_LOGD("Freezing clock class: %!+K", clock_class); |
| 276 | ((struct bt_clock_class *) clock_class)->frozen = 1; |
| 277 | } |
| 278 | |
| 279 | BT_EXPORT |
| 280 | enum bt_clock_class_cycles_to_ns_from_origin_status |
| 281 | bt_clock_class_cycles_to_ns_from_origin( |
| 282 | const struct bt_clock_class *clock_class, |
| 283 | uint64_t cycles, int64_t *ns) |
| 284 | { |
| 285 | int ret; |
| 286 | |
| 287 | BT_ASSERT_PRE_DEV_NO_ERROR(); |
| 288 | BT_ASSERT_PRE_DEV_CLK_CLS_NON_NULL(clock_class); |
| 289 | BT_ASSERT_PRE_DEV_NON_NULL("nanoseconds-output", ns, |
| 290 | "Nanoseconds (output)"); |
| 291 | ret = bt_util_ns_from_origin_clock_class(clock_class, cycles, ns); |
| 292 | if (ret) { |
| 293 | BT_LIB_LOGE_APPEND_CAUSE("Cannot convert cycles to nanoseconds " |
| 294 | "from origin for given clock class: " |
| 295 | "value overflows the signed 64-bit integer range: " |
| 296 | "%![cc-]+K, cycles=%" PRIu64, |
| 297 | clock_class, cycles); |
| 298 | ret = BT_FUNC_STATUS_OVERFLOW_ERROR; |
| 299 | } |
| 300 | |
| 301 | return ret; |
| 302 | } |
| 303 | |
| 304 | BT_EXPORT |
| 305 | const struct bt_value *bt_clock_class_borrow_user_attributes_const( |
| 306 | const struct bt_clock_class *clock_class) |
| 307 | { |
| 308 | BT_ASSERT_PRE_DEV_CLK_CLS_NON_NULL(clock_class); |
| 309 | return clock_class->user_attributes; |
| 310 | } |
| 311 | |
| 312 | BT_EXPORT |
| 313 | struct bt_value *bt_clock_class_borrow_user_attributes( |
| 314 | struct bt_clock_class *clock_class) |
| 315 | { |
| 316 | return (void *) bt_clock_class_borrow_user_attributes_const( |
| 317 | (void *) clock_class); |
| 318 | } |
| 319 | |
| 320 | BT_EXPORT |
| 321 | void bt_clock_class_set_user_attributes( |
| 322 | struct bt_clock_class *clock_class, |
| 323 | const struct bt_value *user_attributes) |
| 324 | { |
| 325 | BT_ASSERT_PRE_CLK_CLS_NON_NULL(clock_class); |
| 326 | BT_ASSERT_PRE_USER_ATTRS_NON_NULL(user_attributes); |
| 327 | BT_ASSERT_PRE_USER_ATTRS_IS_MAP(user_attributes); |
| 328 | BT_ASSERT_PRE_DEV_CLOCK_CLASS_HOT(clock_class); |
| 329 | bt_object_put_ref_no_null_check(clock_class->user_attributes); |
| 330 | clock_class->user_attributes = (void *) user_attributes; |
| 331 | bt_object_get_ref_no_null_check(clock_class->user_attributes); |
| 332 | } |
| 333 | |
| 334 | BT_EXPORT |
| 335 | void bt_clock_class_get_ref(const struct bt_clock_class *clock_class) |
| 336 | { |
| 337 | bt_object_get_ref(clock_class); |
| 338 | } |
| 339 | |
| 340 | BT_EXPORT |
| 341 | void bt_clock_class_put_ref(const struct bt_clock_class *clock_class) |
| 342 | { |
| 343 | bt_object_put_ref(clock_class); |
| 344 | } |