| 1 | #ifndef _LTTNG_UST_ABI_H |
| 2 | #define _LTTNG_UST_ABI_H |
| 3 | |
| 4 | /* |
| 5 | * lttng/ust-abi.h |
| 6 | * |
| 7 | * LTTng-UST ABI header |
| 8 | * |
| 9 | * Copyright 2010-2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 10 | * |
| 11 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 12 | * of this software and associated documentation files (the "Software"), to deal |
| 13 | * in the Software without restriction, including without limitation the rights |
| 14 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 15 | * copies of the Software, and to permit persons to whom the Software is |
| 16 | * furnished to do so, subject to the following conditions: |
| 17 | * |
| 18 | * The above copyright notice and this permission notice shall be included in |
| 19 | * all copies or substantial portions of the Software. |
| 20 | * |
| 21 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 22 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 23 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 24 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 25 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 26 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 27 | * SOFTWARE. |
| 28 | */ |
| 29 | |
| 30 | #include <stdint.h> |
| 31 | #include <lttng/ust-compiler.h> |
| 32 | |
| 33 | #ifndef LTTNG_PACKED |
| 34 | #error "LTTNG_PACKED should be defined" |
| 35 | #endif |
| 36 | |
| 37 | #ifndef __ust_stringify |
| 38 | #define __ust_stringify1(x) #x |
| 39 | #define __ust_stringify(x) __ust_stringify1(x) |
| 40 | #endif /* __ust_stringify */ |
| 41 | |
| 42 | #define LTTNG_UST_SYM_NAME_LEN 256 |
| 43 | #define LTTNG_UST_ABI_PROCNAME_LEN 16 |
| 44 | |
| 45 | /* UST comm magic number, used to validate protocol and endianness. */ |
| 46 | #define LTTNG_UST_COMM_MAGIC 0xC57C57C5 |
| 47 | |
| 48 | /* Version for ABI between liblttng-ust, sessiond, consumerd */ |
| 49 | #define LTTNG_UST_ABI_MAJOR_VERSION 9 |
| 50 | #define LTTNG_UST_ABI_MAJOR_VERSION_OLDEST_COMPATIBLE 8 |
| 51 | #define LTTNG_UST_ABI_MINOR_VERSION 0 |
| 52 | |
| 53 | enum lttng_ust_instrumentation { |
| 54 | LTTNG_UST_TRACEPOINT = 0, |
| 55 | LTTNG_UST_PROBE = 1, |
| 56 | LTTNG_UST_FUNCTION = 2, |
| 57 | }; |
| 58 | |
| 59 | enum lttng_ust_loglevel_type { |
| 60 | LTTNG_UST_LOGLEVEL_ALL = 0, |
| 61 | LTTNG_UST_LOGLEVEL_RANGE = 1, |
| 62 | LTTNG_UST_LOGLEVEL_SINGLE = 2, |
| 63 | }; |
| 64 | |
| 65 | enum lttng_ust_output { |
| 66 | LTTNG_UST_MMAP = 0, |
| 67 | }; |
| 68 | |
| 69 | enum lttng_ust_chan_type { |
| 70 | LTTNG_UST_CHAN_PER_CPU = 0, |
| 71 | LTTNG_UST_CHAN_METADATA = 1, |
| 72 | }; |
| 73 | |
| 74 | struct lttng_ust_tracer_version { |
| 75 | uint32_t major; |
| 76 | uint32_t minor; |
| 77 | uint32_t patchlevel; |
| 78 | } LTTNG_PACKED; |
| 79 | |
| 80 | #define LTTNG_UST_CHANNEL_PADDING (LTTNG_UST_SYM_NAME_LEN + 32) |
| 81 | /* |
| 82 | * Given that the consumerd is limited to 64k file descriptors, we |
| 83 | * cannot expect much more than 1MB channel structure size. This size is |
| 84 | * depends on the number of streams within a channel, which depends on |
| 85 | * the number of possible CPUs on the system. |
| 86 | */ |
| 87 | #define LTTNG_UST_CHANNEL_DATA_MAX_LEN 1048576U |
| 88 | struct lttng_ust_channel { |
| 89 | uint64_t len; |
| 90 | enum lttng_ust_chan_type type; |
| 91 | char padding[LTTNG_UST_CHANNEL_PADDING]; |
| 92 | char data[]; /* variable sized data */ |
| 93 | } LTTNG_PACKED; |
| 94 | |
| 95 | #define LTTNG_UST_STREAM_PADDING1 (LTTNG_UST_SYM_NAME_LEN + 32) |
| 96 | struct lttng_ust_stream { |
| 97 | uint64_t len; /* shm len */ |
| 98 | uint32_t stream_nr; /* stream number */ |
| 99 | char padding[LTTNG_UST_STREAM_PADDING1]; |
| 100 | /* |
| 101 | * shm_fd and wakeup_fd are send over unix socket as file |
| 102 | * descriptors after this structure. |
| 103 | */ |
| 104 | } LTTNG_PACKED; |
| 105 | |
| 106 | |
| 107 | enum lttng_ust_counter_arithmetic { |
| 108 | LTTNG_UST_COUNTER_ARITHMETIC_MODULAR = 0, |
| 109 | LTTNG_UST_COUNTER_ARITHMETIC_SATURATION = 1, |
| 110 | }; |
| 111 | |
| 112 | enum lttng_ust_counter_bitness { |
| 113 | LTTNG_UST_COUNTER_BITNESS_32 = 0, |
| 114 | LTTNG_UST_COUNTER_BITNESS_64 = 1, |
| 115 | }; |
| 116 | |
| 117 | struct lttng_ust_counter_dimension { |
| 118 | uint64_t size; |
| 119 | uint64_t underflow_index; |
| 120 | uint64_t overflow_index; |
| 121 | uint8_t has_underflow; |
| 122 | uint8_t has_overflow; |
| 123 | } LTTNG_PACKED; |
| 124 | |
| 125 | #define LTTNG_UST_COUNTER_DIMENSION_MAX 8 |
| 126 | struct lttng_ust_counter_conf { |
| 127 | uint32_t arithmetic; /* enum lttng_ust_counter_arithmetic */ |
| 128 | uint32_t bitness; /* enum lttng_ust_counter_bitness */ |
| 129 | uint32_t number_dimensions; |
| 130 | int64_t global_sum_step; |
| 131 | struct lttng_ust_counter_dimension dimensions[LTTNG_UST_COUNTER_DIMENSION_MAX]; |
| 132 | } LTTNG_PACKED; |
| 133 | |
| 134 | struct lttng_ust_counter_value { |
| 135 | uint32_t number_dimensions; |
| 136 | uint64_t dimension_indexes[LTTNG_UST_COUNTER_DIMENSION_MAX]; |
| 137 | int64_t value; |
| 138 | } LTTNG_PACKED; |
| 139 | |
| 140 | #define LTTNG_UST_EVENT_PADDING1 8 |
| 141 | #define LTTNG_UST_EVENT_PADDING2 (LTTNG_UST_SYM_NAME_LEN + 32) |
| 142 | struct lttng_ust_event { |
| 143 | enum lttng_ust_instrumentation instrumentation; |
| 144 | char name[LTTNG_UST_SYM_NAME_LEN]; /* event name */ |
| 145 | |
| 146 | enum lttng_ust_loglevel_type loglevel_type; |
| 147 | int loglevel; /* value, -1: all */ |
| 148 | uint64_t token; /* User-provided token */ |
| 149 | char padding[LTTNG_UST_EVENT_PADDING1]; |
| 150 | |
| 151 | /* Per instrumentation type configuration */ |
| 152 | union { |
| 153 | char padding[LTTNG_UST_EVENT_PADDING2]; |
| 154 | } u; |
| 155 | } LTTNG_PACKED; |
| 156 | |
| 157 | #define LTTNG_UST_EVENT_NOTIFIER_PADDING 32 |
| 158 | struct lttng_ust_event_notifier { |
| 159 | struct lttng_ust_event event; |
| 160 | uint64_t error_counter_index; |
| 161 | char padding[LTTNG_UST_EVENT_NOTIFIER_PADDING]; |
| 162 | } LTTNG_PACKED; |
| 163 | |
| 164 | #define LTTNG_EVENT_NOTIFIER_NOTIFICATION_PADDING 32 |
| 165 | struct lttng_ust_event_notifier_notification { |
| 166 | uint64_t token; |
| 167 | uint16_t capture_buf_size; |
| 168 | char padding[LTTNG_EVENT_NOTIFIER_NOTIFICATION_PADDING]; |
| 169 | } LTTNG_PACKED; |
| 170 | |
| 171 | #define LTTNG_UST_COUNTER_PADDING1 (LTTNG_UST_SYM_NAME_LEN + 32) |
| 172 | #define LTTNG_UST_COUNTER_DATA_MAX_LEN 4096U |
| 173 | struct lttng_ust_counter { |
| 174 | uint64_t len; |
| 175 | char padding[LTTNG_UST_COUNTER_PADDING1]; |
| 176 | char data[]; /* variable sized data */ |
| 177 | } LTTNG_PACKED; |
| 178 | |
| 179 | #define LTTNG_UST_COUNTER_GLOBAL_PADDING1 (LTTNG_UST_SYM_NAME_LEN + 32) |
| 180 | struct lttng_ust_counter_global { |
| 181 | uint64_t len; /* shm len */ |
| 182 | char padding[LTTNG_UST_COUNTER_GLOBAL_PADDING1]; |
| 183 | } LTTNG_PACKED; |
| 184 | |
| 185 | #define LTTNG_UST_COUNTER_CPU_PADDING1 (LTTNG_UST_SYM_NAME_LEN + 32) |
| 186 | struct lttng_ust_counter_cpu { |
| 187 | uint64_t len; /* shm len */ |
| 188 | uint32_t cpu_nr; |
| 189 | char padding[LTTNG_UST_COUNTER_CPU_PADDING1]; |
| 190 | } LTTNG_PACKED; |
| 191 | |
| 192 | enum lttng_ust_field_type { |
| 193 | LTTNG_UST_FIELD_OTHER = 0, |
| 194 | LTTNG_UST_FIELD_INTEGER = 1, |
| 195 | LTTNG_UST_FIELD_ENUM = 2, |
| 196 | LTTNG_UST_FIELD_FLOAT = 3, |
| 197 | LTTNG_UST_FIELD_STRING = 4, |
| 198 | }; |
| 199 | |
| 200 | #define LTTNG_UST_FIELD_ITER_PADDING (LTTNG_UST_SYM_NAME_LEN + 28) |
| 201 | struct lttng_ust_field_iter { |
| 202 | char event_name[LTTNG_UST_SYM_NAME_LEN]; |
| 203 | char field_name[LTTNG_UST_SYM_NAME_LEN]; |
| 204 | enum lttng_ust_field_type type; |
| 205 | int loglevel; /* event loglevel */ |
| 206 | int nowrite; |
| 207 | char padding[LTTNG_UST_FIELD_ITER_PADDING]; |
| 208 | } LTTNG_PACKED; |
| 209 | |
| 210 | enum lttng_ust_context_type { |
| 211 | LTTNG_UST_CONTEXT_VTID = 0, |
| 212 | LTTNG_UST_CONTEXT_VPID = 1, |
| 213 | LTTNG_UST_CONTEXT_PTHREAD_ID = 2, |
| 214 | LTTNG_UST_CONTEXT_PROCNAME = 3, |
| 215 | LTTNG_UST_CONTEXT_IP = 4, |
| 216 | LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER = 5, |
| 217 | LTTNG_UST_CONTEXT_CPU_ID = 6, |
| 218 | LTTNG_UST_CONTEXT_APP_CONTEXT = 7, |
| 219 | LTTNG_UST_CONTEXT_CGROUP_NS = 8, |
| 220 | LTTNG_UST_CONTEXT_IPC_NS = 9, |
| 221 | LTTNG_UST_CONTEXT_MNT_NS = 10, |
| 222 | LTTNG_UST_CONTEXT_NET_NS = 11, |
| 223 | LTTNG_UST_CONTEXT_PID_NS = 12, |
| 224 | LTTNG_UST_CONTEXT_USER_NS = 13, |
| 225 | LTTNG_UST_CONTEXT_UTS_NS = 14, |
| 226 | LTTNG_UST_CONTEXT_VUID = 15, |
| 227 | LTTNG_UST_CONTEXT_VEUID = 16, |
| 228 | LTTNG_UST_CONTEXT_VSUID = 17, |
| 229 | LTTNG_UST_CONTEXT_VGID = 18, |
| 230 | LTTNG_UST_CONTEXT_VEGID = 19, |
| 231 | LTTNG_UST_CONTEXT_VSGID = 20, |
| 232 | LTTNG_UST_CONTEXT_TIME_NS = 21, |
| 233 | }; |
| 234 | |
| 235 | struct lttng_ust_perf_counter_ctx { |
| 236 | uint32_t type; |
| 237 | uint64_t config; |
| 238 | char name[LTTNG_UST_SYM_NAME_LEN]; |
| 239 | } LTTNG_PACKED; |
| 240 | |
| 241 | #define LTTNG_UST_CONTEXT_PADDING1 16 |
| 242 | #define LTTNG_UST_CONTEXT_PADDING2 (LTTNG_UST_SYM_NAME_LEN + 32) |
| 243 | struct lttng_ust_context { |
| 244 | enum lttng_ust_context_type ctx; |
| 245 | char padding[LTTNG_UST_CONTEXT_PADDING1]; |
| 246 | |
| 247 | union { |
| 248 | struct lttng_ust_perf_counter_ctx perf_counter; |
| 249 | struct { |
| 250 | /* Includes trailing '\0'. */ |
| 251 | uint32_t provider_name_len; |
| 252 | uint32_t ctx_name_len; |
| 253 | } app_ctx; |
| 254 | char padding[LTTNG_UST_CONTEXT_PADDING2]; |
| 255 | } u; |
| 256 | } LTTNG_PACKED; |
| 257 | |
| 258 | /* |
| 259 | * Tracer channel attributes. |
| 260 | */ |
| 261 | #define LTTNG_UST_CHANNEL_ATTR_PADDING (LTTNG_UST_SYM_NAME_LEN + 32) |
| 262 | struct lttng_ust_channel_attr { |
| 263 | uint64_t subbuf_size; /* bytes */ |
| 264 | uint64_t num_subbuf; /* power of 2 */ |
| 265 | int overwrite; /* 1: overwrite, 0: discard */ |
| 266 | unsigned int switch_timer_interval; /* usec */ |
| 267 | unsigned int read_timer_interval; /* usec */ |
| 268 | enum lttng_ust_output output; /* splice, mmap */ |
| 269 | union { |
| 270 | struct { |
| 271 | int64_t blocking_timeout; /* Blocking timeout (usec) */ |
| 272 | } s; |
| 273 | char padding[LTTNG_UST_CHANNEL_ATTR_PADDING]; |
| 274 | } u; |
| 275 | } LTTNG_PACKED; |
| 276 | |
| 277 | #define LTTNG_UST_TRACEPOINT_ITER_PADDING 16 |
| 278 | struct lttng_ust_tracepoint_iter { |
| 279 | char name[LTTNG_UST_SYM_NAME_LEN]; /* provider:name */ |
| 280 | int loglevel; |
| 281 | char padding[LTTNG_UST_TRACEPOINT_ITER_PADDING]; |
| 282 | } LTTNG_PACKED; |
| 283 | |
| 284 | enum lttng_ust_object_type { |
| 285 | LTTNG_UST_OBJECT_TYPE_UNKNOWN = -1, |
| 286 | LTTNG_UST_OBJECT_TYPE_CHANNEL = 0, |
| 287 | LTTNG_UST_OBJECT_TYPE_STREAM = 1, |
| 288 | LTTNG_UST_OBJECT_TYPE_EVENT = 2, |
| 289 | LTTNG_UST_OBJECT_TYPE_CONTEXT = 3, |
| 290 | LTTNG_UST_OBJECT_TYPE_EVENT_NOTIFIER_GROUP = 4, |
| 291 | LTTNG_UST_OBJECT_TYPE_EVENT_NOTIFIER = 5, |
| 292 | LTTNG_UST_OBJECT_TYPE_COUNTER = 6, |
| 293 | LTTNG_UST_OBJECT_TYPE_COUNTER_GLOBAL = 7, |
| 294 | LTTNG_UST_OBJECT_TYPE_COUNTER_CPU = 8, |
| 295 | }; |
| 296 | |
| 297 | #define LTTNG_UST_OBJECT_DATA_PADDING1 32 |
| 298 | #define LTTNG_UST_OBJECT_DATA_PADDING2 (LTTNG_UST_SYM_NAME_LEN + 32) |
| 299 | |
| 300 | struct lttng_ust_object_data { |
| 301 | enum lttng_ust_object_type type; |
| 302 | int handle; |
| 303 | uint64_t size; |
| 304 | char padding1[LTTNG_UST_OBJECT_DATA_PADDING1]; |
| 305 | union { |
| 306 | struct { |
| 307 | void *data; |
| 308 | enum lttng_ust_chan_type type; |
| 309 | int wakeup_fd; |
| 310 | } channel; |
| 311 | struct { |
| 312 | int shm_fd; |
| 313 | int wakeup_fd; |
| 314 | uint32_t stream_nr; |
| 315 | } stream; |
| 316 | struct { |
| 317 | void *data; |
| 318 | } counter; |
| 319 | struct { |
| 320 | int shm_fd; |
| 321 | } counter_global; |
| 322 | struct { |
| 323 | int shm_fd; |
| 324 | uint32_t cpu_nr; |
| 325 | } counter_cpu; |
| 326 | char padding2[LTTNG_UST_OBJECT_DATA_PADDING2]; |
| 327 | } u; |
| 328 | } LTTNG_PACKED; |
| 329 | |
| 330 | enum lttng_ust_calibrate_type { |
| 331 | LTTNG_UST_CALIBRATE_TRACEPOINT, |
| 332 | }; |
| 333 | |
| 334 | #define LTTNG_UST_CALIBRATE_PADDING1 16 |
| 335 | #define LTTNG_UST_CALIBRATE_PADDING2 (LTTNG_UST_SYM_NAME_LEN + 32) |
| 336 | struct lttng_ust_calibrate { |
| 337 | enum lttng_ust_calibrate_type type; /* type (input) */ |
| 338 | char padding[LTTNG_UST_CALIBRATE_PADDING1]; |
| 339 | |
| 340 | union { |
| 341 | char padding[LTTNG_UST_CALIBRATE_PADDING2]; |
| 342 | } u; |
| 343 | } LTTNG_PACKED; |
| 344 | |
| 345 | #define FILTER_BYTECODE_MAX_LEN 65536 |
| 346 | #define LTTNG_UST_FILTER_PADDING 32 |
| 347 | struct lttng_ust_filter_bytecode { |
| 348 | uint32_t len; |
| 349 | uint32_t reloc_offset; |
| 350 | uint64_t seqnum; |
| 351 | char padding[LTTNG_UST_FILTER_PADDING]; |
| 352 | char data[0]; |
| 353 | } LTTNG_PACKED; |
| 354 | |
| 355 | #define CAPTURE_BYTECODE_MAX_LEN 65536 |
| 356 | #define LTTNG_UST_CAPTURE_PADDING 32 |
| 357 | struct lttng_ust_capture_bytecode { |
| 358 | uint32_t len; |
| 359 | uint32_t reloc_offset; |
| 360 | uint64_t seqnum; |
| 361 | char padding[LTTNG_UST_CAPTURE_PADDING]; |
| 362 | char data[0]; |
| 363 | } LTTNG_PACKED; |
| 364 | |
| 365 | #define LTTNG_UST_EXCLUSION_PADDING 32 |
| 366 | struct lttng_ust_event_exclusion { |
| 367 | uint32_t count; |
| 368 | char padding[LTTNG_UST_EXCLUSION_PADDING]; |
| 369 | char names[LTTNG_UST_SYM_NAME_LEN][0]; |
| 370 | } LTTNG_PACKED; |
| 371 | |
| 372 | #define _UST_CMD(minor) (minor) |
| 373 | #define _UST_CMDR(minor, type) (minor) |
| 374 | #define _UST_CMDW(minor, type) (minor) |
| 375 | |
| 376 | /* Handled by object descriptor */ |
| 377 | #define LTTNG_UST_RELEASE _UST_CMD(0x1) |
| 378 | |
| 379 | /* Handled by object cmd */ |
| 380 | |
| 381 | /* LTTng-UST commands */ |
| 382 | #define LTTNG_UST_SESSION _UST_CMD(0x40) |
| 383 | #define LTTNG_UST_TRACER_VERSION \ |
| 384 | _UST_CMDR(0x41, struct lttng_ust_tracer_version) |
| 385 | #define LTTNG_UST_TRACEPOINT_LIST _UST_CMD(0x42) |
| 386 | #define LTTNG_UST_WAIT_QUIESCENT _UST_CMD(0x43) |
| 387 | #define LTTNG_UST_REGISTER_DONE _UST_CMD(0x44) |
| 388 | #define LTTNG_UST_TRACEPOINT_FIELD_LIST _UST_CMD(0x45) |
| 389 | #define LTTNG_UST_EVENT_NOTIFIER_GROUP_CREATE _UST_CMD(0x46) |
| 390 | |
| 391 | /* Session commands */ |
| 392 | #define LTTNG_UST_CHANNEL \ |
| 393 | _UST_CMDW(0x51, struct lttng_ust_channel) |
| 394 | #define LTTNG_UST_SESSION_START _UST_CMD(0x52) |
| 395 | #define LTTNG_UST_SESSION_STOP _UST_CMD(0x53) |
| 396 | #define LTTNG_UST_SESSION_STATEDUMP _UST_CMD(0x54) |
| 397 | |
| 398 | /* Channel commands */ |
| 399 | #define LTTNG_UST_STREAM _UST_CMD(0x60) |
| 400 | #define LTTNG_UST_EVENT \ |
| 401 | _UST_CMDW(0x61, struct lttng_ust_event) |
| 402 | |
| 403 | /* Event and channel commands */ |
| 404 | #define LTTNG_UST_CONTEXT \ |
| 405 | _UST_CMDW(0x70, struct lttng_ust_context) |
| 406 | #define LTTNG_UST_FLUSH_BUFFER \ |
| 407 | _UST_CMD(0x71) |
| 408 | |
| 409 | /* Event, event notifier, channel and session commands */ |
| 410 | #define LTTNG_UST_ENABLE _UST_CMD(0x80) |
| 411 | #define LTTNG_UST_DISABLE _UST_CMD(0x81) |
| 412 | |
| 413 | /* Tracepoint list commands */ |
| 414 | #define LTTNG_UST_TRACEPOINT_LIST_GET _UST_CMD(0x90) |
| 415 | #define LTTNG_UST_TRACEPOINT_FIELD_LIST_GET _UST_CMD(0x91) |
| 416 | |
| 417 | /* Event and event notifier commands */ |
| 418 | #define LTTNG_UST_FILTER _UST_CMD(0xA0) |
| 419 | #define LTTNG_UST_EXCLUSION _UST_CMD(0xA1) |
| 420 | |
| 421 | /* Event notifier group commands */ |
| 422 | #define LTTNG_UST_EVENT_NOTIFIER_CREATE \ |
| 423 | _UST_CMDW(0xB0, struct lttng_ust_event_notifier) |
| 424 | |
| 425 | /* Event notifier commands */ |
| 426 | #define LTTNG_UST_CAPTURE _UST_CMD(0xB6) |
| 427 | |
| 428 | /* Session and event notifier group commands */ |
| 429 | #define LTTNG_UST_COUNTER \ |
| 430 | _UST_CMDW(0xC0, struct lttng_ust_counter) |
| 431 | |
| 432 | /* Counter commands */ |
| 433 | #define LTTNG_UST_COUNTER_GLOBAL \ |
| 434 | _UST_CMDW(0xD0, struct lttng_ust_counter_global) |
| 435 | #define LTTNG_UST_COUNTER_CPU \ |
| 436 | _UST_CMDW(0xD1, struct lttng_ust_counter_cpu) |
| 437 | |
| 438 | #define LTTNG_UST_ROOT_HANDLE 0 |
| 439 | |
| 440 | struct lttng_ust_obj; |
| 441 | |
| 442 | union ust_args { |
| 443 | struct { |
| 444 | void *chan_data; |
| 445 | int wakeup_fd; |
| 446 | } channel; |
| 447 | struct { |
| 448 | int shm_fd; |
| 449 | int wakeup_fd; |
| 450 | } stream; |
| 451 | struct { |
| 452 | struct lttng_ust_field_iter entry; |
| 453 | } field_list; |
| 454 | struct { |
| 455 | char *ctxname; |
| 456 | } app_context; |
| 457 | struct { |
| 458 | int event_notifier_notif_fd; |
| 459 | } event_notifier_handle; |
| 460 | struct { |
| 461 | void *counter_data; |
| 462 | } counter; |
| 463 | struct { |
| 464 | int shm_fd; |
| 465 | } counter_shm; |
| 466 | }; |
| 467 | |
| 468 | struct lttng_ust_objd_ops { |
| 469 | long (*cmd)(int objd, unsigned int cmd, unsigned long arg, |
| 470 | union ust_args *args, void *owner); |
| 471 | int (*release)(int objd); |
| 472 | }; |
| 473 | |
| 474 | /* Create root handle. Always ID 0. */ |
| 475 | int lttng_abi_create_root_handle(void); |
| 476 | |
| 477 | const struct lttng_ust_objd_ops *objd_ops(int id); |
| 478 | int lttng_ust_objd_unref(int id, int is_owner); |
| 479 | |
| 480 | void lttng_ust_abi_exit(void); |
| 481 | void lttng_ust_events_exit(void); |
| 482 | void lttng_ust_objd_table_owner_cleanup(void *owner); |
| 483 | |
| 484 | #endif /* _LTTNG_UST_ABI_H */ |