lib: add bt_{graph,query_executor}_add_interrupter()
[babeltrace.git] / src / common / common.h
1 #ifndef BABELTRACE_COMMON_INTERNAL_H
2 #define BABELTRACE_COMMON_INTERNAL_H
3
4 /*
5 * Copyright (c) 2018 EfficiOS Inc. and Linux Foundation
6 * Copyright (c) 2018 Philippe Proulx <pproulx@efficios.com>
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 * SOFTWARE.
25 */
26
27 #include <errno.h>
28 #include <glib.h>
29 #include <inttypes.h>
30 #include <stdarg.h>
31 #include <stdbool.h>
32 #include <stdint.h>
33 #include <stdlib.h>
34 #include <unistd.h>
35 #include <string.h>
36
37 #include <babeltrace2/babeltrace.h>
38
39 #define __BT_IN_BABELTRACE_H
40 #include <babeltrace2/func-status.h>
41
42 #include "common/assert.h"
43 #include "common/macros.h"
44 #include "common/safe.h"
45
46 #define BT_COMMON_COLOR_RESET "\033[0m"
47 #define BT_COMMON_COLOR_BOLD "\033[1m"
48 #define BT_COMMON_COLOR_FG_DEFAULT "\033[39m"
49 #define BT_COMMON_COLOR_FG_RED "\033[31m"
50 #define BT_COMMON_COLOR_FG_GREEN "\033[32m"
51 #define BT_COMMON_COLOR_FG_YELLOW "\033[33m"
52 #define BT_COMMON_COLOR_FG_BLUE "\033[34m"
53 #define BT_COMMON_COLOR_FG_MAGENTA "\033[35m"
54 #define BT_COMMON_COLOR_FG_CYAN "\033[36m"
55 #define BT_COMMON_COLOR_FG_LIGHT_GRAY "\033[37m"
56 #define BT_COMMON_COLOR_BG_DEFAULT "\033[49m"
57 #define BT_COMMON_COLOR_BG_RED "\033[41m"
58 #define BT_COMMON_COLOR_BG_GREEN "\033[42m"
59 #define BT_COMMON_COLOR_BG_YELLOW "\033[43m"
60 #define BT_COMMON_COLOR_BG_BLUE "\033[44m"
61 #define BT_COMMON_COLOR_BG_MAGENTA "\033[45m"
62 #define BT_COMMON_COLOR_BG_CYAN "\033[46m"
63 #define BT_COMMON_COLOR_BG_LIGHT_GRAY "\033[47m"
64
65 struct bt_common_lttng_live_url_parts {
66 GString *proto;
67 GString *hostname;
68 GString *target_hostname;
69 GString *session_name;
70
71 /* -1 means default port */
72 int port;
73 };
74
75 /*
76 * Checks if the current process has setuid or setgid access rights.
77 * Returns `true` if so.
78 */
79 BT_HIDDEN
80 bool bt_common_is_setuid_setgid(void);
81
82 /*
83 * Returns the system-wide plugin path, e.g.
84 * `/usr/lib/babeltrace2/plugins`. Do not free the return value.
85 */
86 BT_HIDDEN
87 const char *bt_common_get_system_plugin_path(void);
88
89 /*
90 * Returns the user plugin path, e.g.
91 * `/home/user/.local/lib/babeltrace2/plugins`. You need to free the
92 * return value.
93 */
94 BT_HIDDEN
95 char *bt_common_get_home_plugin_path(int log_level);
96
97 /*
98 * Appends the list of directories in `paths` to the array `dirs`.
99 * `paths` is a list of directories separated by `:`. Returns 0 on
100 * success.
101 */
102 BT_HIDDEN
103 int bt_common_append_plugin_path_dirs(const char *paths, GPtrArray *dirs);
104
105 /*
106 * Returns `true` if terminal color codes are supported for this
107 * process.
108 */
109 BT_HIDDEN
110 bool bt_common_colors_supported(void);
111
112 BT_HIDDEN
113 const char *bt_common_color_reset(void);
114
115 BT_HIDDEN
116 const char *bt_common_color_bold(void);
117
118 BT_HIDDEN
119 const char *bt_common_color_fg_default(void);
120
121 BT_HIDDEN
122 const char *bt_common_color_fg_red(void);
123
124 BT_HIDDEN
125 const char *bt_common_color_fg_green(void);
126
127 BT_HIDDEN
128 const char *bt_common_color_fg_yellow(void);
129
130 BT_HIDDEN
131 const char *bt_common_color_fg_blue(void);
132
133 BT_HIDDEN
134 const char *bt_common_color_fg_magenta(void);
135
136 BT_HIDDEN
137 const char *bt_common_color_fg_cyan(void);
138
139 BT_HIDDEN
140 const char *bt_common_color_fg_light_gray(void);
141
142 BT_HIDDEN
143 const char *bt_common_color_bg_default(void);
144
145 BT_HIDDEN
146 const char *bt_common_color_bg_red(void);
147
148 BT_HIDDEN
149 const char *bt_common_color_bg_green(void);
150
151 BT_HIDDEN
152 const char *bt_common_color_bg_yellow(void);
153
154 BT_HIDDEN
155 const char *bt_common_color_bg_blue(void);
156
157 BT_HIDDEN
158 const char *bt_common_color_bg_magenta(void);
159
160 BT_HIDDEN
161 const char *bt_common_color_bg_cyan(void);
162
163 BT_HIDDEN
164 const char *bt_common_color_bg_light_gray(void);
165
166 /*
167 * Returns the substring from `input` to the first character found
168 * in the list of characters `end_chars`, unescaping any character
169 * found in `escapable_chars`, and sets `*end_pos` to the position of
170 * the end (from `input`). The caller owns the returned GString.
171 */
172 BT_HIDDEN
173 GString *bt_common_string_until(const char *input, const char *escapable_chars,
174 const char *end_chars, size_t *end_pos);
175
176 /*
177 * Returns the quoted version of `input` for a shell. If
178 * `with_single_quotes` is `true`, prepends and appends the `'` prefix
179 * and suffix to the returned string; otherwise the caller should
180 * prepend and append them manually, although they are not always
181 * required. The caller owns the returned GString.
182 */
183 BT_HIDDEN
184 GString *bt_common_shell_quote(const char *input, bool with_single_quotes);
185
186 /*
187 * Returns `true` if `input` is a string made only of printable
188 * characters.
189 */
190 BT_HIDDEN
191 bool bt_common_string_is_printable(const char *input);
192
193 /*
194 * Destroys the parts of an LTTng live URL as returned by
195 * bt_common_parse_lttng_live_url().
196 */
197 BT_HIDDEN
198 void bt_common_destroy_lttng_live_url_parts(
199 struct bt_common_lttng_live_url_parts *parts);
200
201 /*
202 * Parses the LTTng live URL `url` and returns its different parts.
203 * If there's an error, writes the error message into `*error_buf`
204 * up to `error_buf_size` bytes. You must destroy the returned value
205 * with bt_common_destroy_lttng_live_url_parts().
206 */
207 BT_HIDDEN
208 struct bt_common_lttng_live_url_parts bt_common_parse_lttng_live_url(
209 const char *url, char *error_buf, size_t error_buf_size);
210
211 /*
212 * Normalizes (in place) a star globbing pattern to be used with
213 * bt_common_star_glob_match(). This function always succeeds.
214 */
215 BT_HIDDEN
216 void bt_common_normalize_star_glob_pattern(char *pattern);
217
218 /*
219 * Returns `true` if `candidate` (of size `candidate_len`) matches
220 * the star globbing pattern `pattern` (of size `pattern_len`).
221 */
222 BT_HIDDEN
223 bool bt_common_star_glob_match(const char *pattern, size_t pattern_len,
224 const char *candidate, size_t candidate_len);
225
226 /*
227 * Normalizes the path `path`:
228 *
229 * * If it's a relative path, converts it to an absolute path using
230 * `wd` as the working directory (or the current working directory
231 * if `wd` is NULL).
232 * * Removes consecutive and trailing slashes.
233 * * Resolves `..` and `.` in the path (both in `path` and in `wd`).
234 * * Does NOT resolve symbolic links.
235 *
236 * The caller owns the returned GString.
237 */
238 BT_HIDDEN
239 GString *bt_common_normalize_path(const char *path, const char *wd);
240
241 typedef void (* bt_common_handle_custom_specifier_func)(void *priv_data,
242 char **buf, size_t avail_size, const char **fmt, va_list *args);
243
244 /*
245 * This is a custom vsnprintf() which handles the standard conversion
246 * specifier as well as custom ones.
247 *
248 * `fmt` is a typical printf()-style format string, with the following
249 * limitations:
250 *
251 * * The `*` width specifier is not accepted.
252 * * The `*` precision specifier is not accepted.
253 * * The `j` and `t` length modifiers are not accepted.
254 * * The `n` format specifier is not accepted.
255 * * The format specifiers defined in <inttypes.h> are not accepted
256 * except for `PRId64`, `PRIu64`, `PRIx64`, `PRIX64`, `PRIo64`, and
257 * `PRIi64`.
258 *
259 * `intro` specifies which special character immediately following an
260 * introductory `%` character in `fmt` is used to indicate a custom
261 * conversion specifier. For example, if `intro` is '@', then any `%@`
262 * sequence in `fmt` is the beginning of a custom conversion specifier.
263 *
264 * When a custom conversion specifier is encountered in `fmt`,
265 * the function calls `handle_specifier`. This callback receives:
266 *
267 * `priv_data`:
268 * Custom, private data.
269 *
270 * `buf`:
271 * Address of the current buffer pointer. `*buf` is the position to
272 * append new data. The callback must update `*buf` when appending
273 * new data. The callback must ensure not to write passed the whole
274 * buffer passed to bt_common_custom_vsnprintf().
275 *
276 * `avail_size`:
277 * Number of bytes left in whole buffer from the `*buf` point.
278 *
279 * `fmt`:
280 * Address of the current format string pointer. `*fmt` points to
281 * the introductory `%` character, which is followed by the
282 * character `intro`. The callback must update `*fmt` so that it
283 * points after the whole custom conversion specifier.
284 *
285 * `args`:
286 * Variable argument list. Use va_arg() to get new arguments from
287 * this list and update it at the same time.
288 *
289 * Because this is an internal utility, this function and its callback
290 * do not return error codes: they abort when there's any error (bad
291 * format string, for example).
292 */
293 BT_HIDDEN
294 void bt_common_custom_vsnprintf(char *buf, size_t buf_size,
295 char intro,
296 bt_common_handle_custom_specifier_func handle_specifier,
297 void *priv_data, const char *fmt, va_list *args);
298
299 /*
300 * Variadic form of bt_common_custom_vsnprintf().
301 */
302 BT_HIDDEN
303 void bt_common_custom_snprintf(char *buf, size_t buf_size,
304 char intro,
305 bt_common_handle_custom_specifier_func handle_specifier,
306 void *priv_data, const char *fmt, ...);
307
308 /*
309 * Returns the system page size.
310 */
311 BT_HIDDEN
312 size_t bt_common_get_page_size(int log_level);
313
314 /*
315 * Adds the digit separator `sep` as many times as needed to form groups
316 * of `digits_per_group` digits within `str`. `str` must have enough
317 * room to accomodate the new separators, that is:
318 *
319 * strlen(str) + (strlen(str) / digits_per_group) + 1
320 *
321 * Example: with `str` `1983198398213`, `digits_per_group` 3, and `sep`
322 * `,`, `str` becomes `1,983,198,398,213`.
323 *
324 * `strlen(str)` must not be 0. `digits_per_group` must not be 0. `sep`
325 * must not be `\0`.
326 */
327 BT_HIDDEN
328 void bt_common_sep_digits(char *str, unsigned int digits_per_group, char sep);
329
330 /*
331 * This is similar to what the command `fold --spaces` does: it wraps
332 * the input lines of `str`, breaking at spaces, and indenting each line
333 * with `indent` spaces so that each line fits the total length
334 * `total_length`.
335 *
336 * If an original line in `str` contains a word which is >= the content
337 * length (`total_length - indent`), then the corresponding folded line
338 * is also larger than the content length. In other words, breaking at
339 * spaces is a best effort, but it might not be possible.
340 *
341 * The returned string, on success, is owned by the caller.
342 */
343 BT_HIDDEN
344 GString *bt_common_fold(const char *str, unsigned int total_length,
345 unsigned int indent);
346
347 /*
348 * Writes the terminal's width to `*width`, its height to `*height`,
349 * and returns 0 on success, or returns -1 on error.
350 */
351 BT_HIDDEN
352 int bt_common_get_term_size(unsigned int *width, unsigned int *height);
353
354 /*
355 * Wraps read() function to handle EINTR and partial reads.
356 * On success, it returns `count` received as parameter. On error, it returns a
357 * value smaller than the requested `count`.
358 */
359 static inline
360 ssize_t bt_common_read(int fd, void *buf, size_t count, int log_level)
361 {
362 size_t i = 0;
363 ssize_t ret;
364
365 BT_ASSERT(buf);
366
367 /* Never return an overflow value. */
368 BT_ASSERT(count <= SSIZE_MAX);
369
370 do {
371 ret = read(fd, buf + i, count - i);
372 if (ret < 0) {
373 if (errno == EINTR) {
374 #ifdef BT_LOG_WRITE_CUR_LVL
375 BT_LOG_WRITE_CUR_LVL(BT_LOG_DEBUG, log_level,
376 BT_LOG_TAG,
377 "read() call interrupted; retrying...");
378 #endif
379 /* retry operation */
380 continue;
381 } else {
382 #ifdef BT_LOG_WRITE_ERRNO_CUR_LVL
383 BT_LOG_WRITE_ERRNO_CUR_LVL(BT_LOG_ERROR,
384 log_level, BT_LOG_TAG,
385 "Error while reading", ": fd=%d", fd);
386 #endif
387 goto end;
388 }
389 }
390 i += ret;
391 BT_ASSERT(i <= count);
392 } while (count - i > 0 && ret > 0);
393
394 end:
395 if (ret >= 0) {
396 if (i == 0) {
397 ret = -1;
398 } else {
399 ret = i;
400 }
401 }
402
403 return ret;
404 }
405
406 static inline
407 const char *bt_common_field_class_type_string(enum bt_field_class_type class_type)
408 {
409 switch (class_type) {
410 case BT_FIELD_CLASS_TYPE_UNSIGNED_INTEGER:
411 return "BT_FIELD_CLASS_TYPE_UNSIGNED_INTEGER";
412 case BT_FIELD_CLASS_TYPE_SIGNED_INTEGER:
413 return "BT_FIELD_CLASS_TYPE_SIGNED_INTEGER";
414 case BT_FIELD_CLASS_TYPE_REAL:
415 return "BT_FIELD_CLASS_TYPE_REAL";
416 case BT_FIELD_CLASS_TYPE_UNSIGNED_ENUMERATION:
417 return "BT_FIELD_CLASS_TYPE_UNSIGNED_ENUMERATION";
418 case BT_FIELD_CLASS_TYPE_SIGNED_ENUMERATION:
419 return "BT_FIELD_CLASS_TYPE_SIGNED_ENUMERATION";
420 case BT_FIELD_CLASS_TYPE_STRING:
421 return "BT_FIELD_CLASS_TYPE_STRING";
422 case BT_FIELD_CLASS_TYPE_STRUCTURE:
423 return "BT_FIELD_CLASS_TYPE_STRUCTURE";
424 case BT_FIELD_CLASS_TYPE_STATIC_ARRAY:
425 return "BT_FIELD_CLASS_TYPE_STATIC_ARRAY";
426 case BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY:
427 return "BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY";
428 case BT_FIELD_CLASS_TYPE_VARIANT_WITHOUT_SELECTOR:
429 return "BT_FIELD_CLASS_TYPE_VARIANT_WITHOUT_SELECTOR";
430 case BT_FIELD_CLASS_TYPE_VARIANT_WITH_UNSIGNED_SELECTOR:
431 return "BT_FIELD_CLASS_TYPE_VARIANT_WITH_UNSIGNED_SELECTOR";
432 case BT_FIELD_CLASS_TYPE_VARIANT_WITH_SIGNED_SELECTOR:
433 return "BT_FIELD_CLASS_TYPE_VARIANT_WITH_SIGNED_SELECTOR";
434 default:
435 return "(unknown)";
436 }
437 };
438
439 static inline
440 const char *bt_common_field_class_integer_preferred_display_base_string(enum bt_field_class_integer_preferred_display_base base)
441 {
442 switch (base) {
443 case BT_FIELD_CLASS_INTEGER_PREFERRED_DISPLAY_BASE_BINARY:
444 return "BT_FIELD_CLASS_INTEGER_PREFERRED_DISPLAY_BASE_BINARY";
445 case BT_FIELD_CLASS_INTEGER_PREFERRED_DISPLAY_BASE_OCTAL:
446 return "BT_FIELD_CLASS_INTEGER_PREFERRED_DISPLAY_BASE_OCTAL";
447 case BT_FIELD_CLASS_INTEGER_PREFERRED_DISPLAY_BASE_DECIMAL:
448 return "BT_FIELD_CLASS_INTEGER_PREFERRED_DISPLAY_BASE_DECIMAL";
449 case BT_FIELD_CLASS_INTEGER_PREFERRED_DISPLAY_BASE_HEXADECIMAL:
450 return "BT_FIELD_CLASS_INTEGER_PREFERRED_DISPLAY_BASE_HEXADECIMAL";
451 default:
452 return "(unknown)";
453 }
454 }
455
456 static inline
457 const char *bt_common_scope_string(enum bt_scope scope)
458 {
459 switch (scope) {
460 case BT_SCOPE_PACKET_CONTEXT:
461 return "BT_SCOPE_PACKET_CONTEXT";
462 case BT_SCOPE_EVENT_COMMON_CONTEXT:
463 return "BT_SCOPE_EVENT_COMMON_CONTEXT";
464 case BT_SCOPE_EVENT_SPECIFIC_CONTEXT:
465 return "BT_SCOPE_EVENT_SPECIFIC_CONTEXT";
466 case BT_SCOPE_EVENT_PAYLOAD:
467 return "BT_SCOPE_EVENT_PAYLOAD";
468 default:
469 return "(unknown)";
470 }
471 }
472
473 static inline
474 const char *bt_common_event_class_log_level_string(
475 enum bt_event_class_log_level level)
476 {
477 switch (level) {
478 case BT_EVENT_CLASS_LOG_LEVEL_EMERGENCY:
479 return "BT_EVENT_CLASS_LOG_LEVEL_EMERGENCY";
480 case BT_EVENT_CLASS_LOG_LEVEL_ALERT:
481 return "BT_EVENT_CLASS_LOG_LEVEL_ALERT";
482 case BT_EVENT_CLASS_LOG_LEVEL_CRITICAL:
483 return "BT_EVENT_CLASS_LOG_LEVEL_CRITICAL";
484 case BT_EVENT_CLASS_LOG_LEVEL_ERROR:
485 return "BT_EVENT_CLASS_LOG_LEVEL_ERROR";
486 case BT_EVENT_CLASS_LOG_LEVEL_WARNING:
487 return "BT_EVENT_CLASS_LOG_LEVEL_WARNING";
488 case BT_EVENT_CLASS_LOG_LEVEL_NOTICE:
489 return "BT_EVENT_CLASS_LOG_LEVEL_NOTICE";
490 case BT_EVENT_CLASS_LOG_LEVEL_INFO:
491 return "BT_EVENT_CLASS_LOG_LEVEL_INFO";
492 case BT_EVENT_CLASS_LOG_LEVEL_DEBUG_SYSTEM:
493 return "BT_EVENT_CLASS_LOG_LEVEL_DEBUG_SYSTEM";
494 case BT_EVENT_CLASS_LOG_LEVEL_DEBUG_PROGRAM:
495 return "BT_EVENT_CLASS_LOG_LEVEL_DEBUG_PROGRAM";
496 case BT_EVENT_CLASS_LOG_LEVEL_DEBUG_PROCESS:
497 return "BT_EVENT_CLASS_LOG_LEVEL_DEBUG_PROCESS";
498 case BT_EVENT_CLASS_LOG_LEVEL_DEBUG_MODULE:
499 return "BT_EVENT_CLASS_LOG_LEVEL_DEBUG_MODULE";
500 case BT_EVENT_CLASS_LOG_LEVEL_DEBUG_UNIT:
501 return "BT_EVENT_CLASS_LOG_LEVEL_DEBUG_UNIT";
502 case BT_EVENT_CLASS_LOG_LEVEL_DEBUG_FUNCTION:
503 return "BT_EVENT_CLASS_LOG_LEVEL_DEBUG_FUNCTION";
504 case BT_EVENT_CLASS_LOG_LEVEL_DEBUG_LINE:
505 return "BT_EVENT_CLASS_LOG_LEVEL_DEBUG_LINE";
506 case BT_EVENT_CLASS_LOG_LEVEL_DEBUG:
507 return "BT_EVENT_CLASS_LOG_LEVEL_DEBUG";
508 default:
509 return "(unknown)";
510 }
511 };
512
513 static inline
514 const char *bt_common_value_type_string(enum bt_value_type type)
515 {
516 switch (type) {
517 case BT_VALUE_TYPE_NULL:
518 return "BT_VALUE_TYPE_NULL";
519 case BT_VALUE_TYPE_BOOL:
520 return "BT_VALUE_TYPE_BOOL";
521 case BT_VALUE_TYPE_UNSIGNED_INTEGER:
522 return "BT_VALUE_TYPE_UNSIGNED_INTEGER";
523 case BT_VALUE_TYPE_SIGNED_INTEGER:
524 return "BT_VALUE_TYPE_SIGNED_INTEGER";
525 case BT_VALUE_TYPE_REAL:
526 return "BT_VALUE_TYPE_REAL";
527 case BT_VALUE_TYPE_STRING:
528 return "BT_VALUE_TYPE_STRING";
529 case BT_VALUE_TYPE_ARRAY:
530 return "BT_VALUE_TYPE_ARRAY";
531 case BT_VALUE_TYPE_MAP:
532 return "BT_VALUE_TYPE_MAP";
533 default:
534 return "(unknown)";
535 }
536 };
537
538 static inline
539 GString *bt_common_field_path_string(struct bt_field_path *path)
540 {
541 GString *str = g_string_new(NULL);
542 uint64_t i;
543
544 BT_ASSERT(path);
545
546 if (!str) {
547 goto end;
548 }
549
550 g_string_append_printf(str, "[%s", bt_common_scope_string(
551 bt_field_path_get_root_scope(path)));
552
553 for (i = 0; i < bt_field_path_get_item_count(path); i++) {
554 const struct bt_field_path_item *fp_item =
555 bt_field_path_borrow_item_by_index_const(path, i);
556
557 switch (bt_field_path_item_get_type(fp_item)) {
558 case BT_FIELD_PATH_ITEM_TYPE_INDEX:
559 g_string_append_printf(str, ", %" PRIu64,
560 bt_field_path_item_index_get_index(fp_item));
561 break;
562 case BT_FIELD_PATH_ITEM_TYPE_CURRENT_ARRAY_ELEMENT:
563 g_string_append(str, ", <CUR>");
564 break;
565 default:
566 abort();
567 }
568 }
569
570 g_string_append(str, "]");
571
572 end:
573 return str;
574 }
575
576 static inline
577 const char *bt_common_logging_level_string(
578 enum bt_logging_level level)
579 {
580 switch (level) {
581 case BT_LOGGING_LEVEL_TRACE:
582 return "BT_LOGGING_LEVEL_TRACE";
583 case BT_LOGGING_LEVEL_DEBUG:
584 return "BT_LOGGING_LEVEL_DEBUG";
585 case BT_LOGGING_LEVEL_INFO:
586 return "BT_LOGGING_LEVEL_INFO";
587 case BT_LOGGING_LEVEL_WARNING:
588 return "BT_LOGGING_LEVEL_WARNING";
589 case BT_LOGGING_LEVEL_ERROR:
590 return "BT_LOGGING_LEVEL_ERROR";
591 case BT_LOGGING_LEVEL_FATAL:
592 return "BT_LOGGING_LEVEL_FATAL";
593 case BT_LOGGING_LEVEL_NONE:
594 return "BT_LOGGING_LEVEL_NONE";
595 default:
596 return "(unknown)";
597 }
598 };
599
600 static inline
601 const char *bt_common_func_status_string(int status)
602 {
603 switch (status) {
604 case __BT_FUNC_STATUS_OVERFLOW:
605 return "OVERFLOW";
606 case __BT_FUNC_STATUS_INVALID_PARAMS:
607 return "INVALID_PARAMS";
608 case __BT_FUNC_STATUS_INVALID_OBJECT:
609 return "INVALID_OBJECT";
610 case __BT_FUNC_STATUS_MEMORY_ERROR:
611 return "MEMORY_ERROR";
612 case __BT_FUNC_STATUS_ERROR:
613 return "ERROR";
614 case __BT_FUNC_STATUS_OK:
615 return "OK";
616 case __BT_FUNC_STATUS_END:
617 return "END";
618 case __BT_FUNC_STATUS_NOT_FOUND:
619 return "NOT_FOUND";
620 case __BT_FUNC_STATUS_AGAIN:
621 return "AGAIN";
622 case __BT_FUNC_STATUS_INTERRUPTED:
623 return "INTERRUPTED";
624 default:
625 return "(unknown)";
626 }
627 }
628
629 #define NS_PER_S_I INT64_C(1000000000)
630 #define NS_PER_S_U UINT64_C(1000000000)
631
632 static inline
633 int bt_common_clock_value_from_ns_from_origin(
634 int64_t cc_offset_seconds, uint64_t cc_offset_cycles,
635 uint64_t cc_freq, int64_t ns_from_origin,
636 uint64_t *raw_value)
637 {
638 int ret = 0;
639 int64_t offset_in_ns;
640 uint64_t value_in_ns;
641 uint64_t rem_value_in_ns;
642 uint64_t value_periods;
643 uint64_t value_period_cycles;
644 int64_t ns_to_add;
645
646 BT_ASSERT(raw_value);
647
648 /* Compute offset part of requested value, in nanoseconds */
649 if (!bt_safe_to_mul_int64(cc_offset_seconds, NS_PER_S_I)) {
650 ret = -1;
651 goto end;
652 }
653
654 offset_in_ns = cc_offset_seconds * NS_PER_S_I;
655
656 if (cc_freq == NS_PER_S_U) {
657 ns_to_add = (int64_t) cc_offset_cycles;
658 } else {
659 if (!bt_safe_to_mul_int64((int64_t) cc_offset_cycles,
660 NS_PER_S_I)) {
661 ret = -1;
662 goto end;
663 }
664
665 ns_to_add = ((int64_t) cc_offset_cycles * NS_PER_S_I) /
666 (int64_t) cc_freq;
667 }
668
669 if (!bt_safe_to_add_int64(offset_in_ns, ns_to_add)) {
670 ret = -1;
671 goto end;
672 }
673
674 offset_in_ns += ns_to_add;
675
676 /* Value part in nanoseconds */
677 if (ns_from_origin < offset_in_ns) {
678 ret = -1;
679 goto end;
680 }
681
682 value_in_ns = (uint64_t) (ns_from_origin - offset_in_ns);
683
684 /* Number of whole clock periods in `value_in_ns` */
685 value_periods = value_in_ns / NS_PER_S_U;
686
687 /* Remaining nanoseconds in cycles + whole clock periods in cycles */
688 rem_value_in_ns = value_in_ns - value_periods * NS_PER_S_U;
689
690 if (value_periods > UINT64_MAX / cc_freq) {
691 ret = -1;
692 goto end;
693 }
694
695 if (!bt_safe_to_mul_uint64(value_periods, cc_freq)) {
696 ret = -1;
697 goto end;
698 }
699
700 value_period_cycles = value_periods * cc_freq;
701
702 if (!bt_safe_to_mul_uint64(cc_freq, rem_value_in_ns)) {
703 ret = -1;
704 goto end;
705 }
706
707 if (!bt_safe_to_add_uint64(cc_freq * rem_value_in_ns / NS_PER_S_U,
708 value_period_cycles)) {
709 ret = -1;
710 goto end;
711 }
712
713 *raw_value = cc_freq * rem_value_in_ns / NS_PER_S_U +
714 value_period_cycles;
715
716 end:
717 return ret;
718 }
719
720 /*
721 * bt_g_string_append_printf cannot be inlined because it expects a
722 * variadic argument list.
723 */
724 BT_HIDDEN
725 int bt_common_g_string_append_printf(GString *str, const char *fmt, ...);
726
727 static inline
728 void bt_common_g_string_append(GString *str, const char *s)
729 {
730 gsize len, allocated_len, s_len;
731
732 /* str->len excludes \0. */
733 len = str->len;
734 /* Exclude \0. */
735 allocated_len = str->allocated_len - 1;
736 s_len = strlen(s);
737 if (G_UNLIKELY(allocated_len < len + s_len)) {
738 /* Resize. */
739 g_string_set_size(str, len + s_len);
740 } else {
741 str->len = len + s_len;
742 }
743 memcpy(str->str + len, s, s_len + 1);
744 }
745
746 static inline
747 void bt_common_g_string_append_c(GString *str, char c)
748 {
749 gsize len, allocated_len, s_len;
750
751 /* str->len excludes \0. */
752 len = str->len;
753 /* Exclude \0. */
754 allocated_len = str->allocated_len - 1;
755 s_len = 1;
756 if (G_UNLIKELY(allocated_len < len + s_len)) {
757 /* Resize. */
758 g_string_set_size(str, len + s_len);
759 } else {
760 str->len = len + s_len;
761 }
762 str->str[len] = c;
763 str->str[len + 1] = '\0';
764 }
765
766 #endif /* BABELTRACE_COMMON_INTERNAL_H */
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