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48faced0 DE |
1 | /* *INDENT-OFF* */ /* ATTRIBUTE_PRINTF confuses indent, avoid running it |
2 | for now. */ | |
3 | /* I/O, string, cleanup, and other random utilities for GDB. | |
42a4f53d | 4 | Copyright (C) 1986-2019 Free Software Foundation, Inc. |
48faced0 DE |
5 | |
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 3 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
20 | ||
21 | #ifndef UTILS_H | |
22 | #define UTILS_H | |
23 | ||
af880d85 | 24 | #include "exceptions.h" |
268a13a5 | 25 | #include "gdbsupport/scoped_restore.h" |
dcb07cfa | 26 | #include <chrono> |
48faced0 | 27 | |
0d12e84c TT |
28 | struct completion_match_for_lcd; |
29 | class compiled_regex; | |
30 | ||
48faced0 DE |
31 | /* String utilities. */ |
32 | ||
491144b5 | 33 | extern bool sevenbit_strings; |
48faced0 | 34 | |
b5ec771e PA |
35 | /* Modes of operation for strncmp_iw_with_mode. */ |
36 | ||
37 | enum class strncmp_iw_mode | |
38 | { | |
39 | /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any | |
40 | differences in whitespace. Returns 0 if they match, non-zero if | |
41 | they don't (slightly different than strcmp()'s range of return | |
42 | values). */ | |
43 | NORMAL, | |
44 | ||
45 | /* Like NORMAL, but also apply the strcmp_iw hack. I.e., | |
46 | string1=="FOO(PARAMS)" matches string2=="FOO". */ | |
47 | MATCH_PARAMS, | |
48 | }; | |
49 | ||
50 | /* Helper for strcmp_iw and strncmp_iw. Exported so that languages | |
51 | can implement both NORMAL and MATCH_PARAMS variants in a single | |
0662b6a7 | 52 | function and defer part of the work to strncmp_iw_with_mode. |
bd69330d | 53 | |
0662b6a7 PA |
54 | LANGUAGE is used to implement some context-sensitive |
55 | language-specific comparisons. For example, for C++, | |
56 | "string1=operator()" should not match "string2=operator" even in | |
bd69330d PA |
57 | MATCH_PARAMS mode. |
58 | ||
59 | MATCH_FOR_LCD is passed down so that the function can mark parts of | |
60 | the symbol name as ignored for completion matching purposes (e.g., | |
61 | to handle abi tags). */ | |
62 | extern int strncmp_iw_with_mode | |
63 | (const char *string1, const char *string2, size_t string2_len, | |
64 | strncmp_iw_mode mode, enum language language, | |
65 | completion_match_for_lcd *match_for_lcd = NULL); | |
b5ec771e | 66 | |
1d550c82 PA |
67 | /* Do a strncmp() type operation on STRING1 and STRING2, ignoring any |
68 | differences in whitespace. STRING2_LEN is STRING2's length. | |
69 | Returns 0 if STRING1 matches STRING2_LEN characters of STRING2, | |
70 | non-zero otherwise (slightly different than strncmp()'s range of | |
0662b6a7 PA |
71 | return values). Note: passes language_minimal to |
72 | strncmp_iw_with_mode, and should therefore be avoided if a more | |
73 | suitable language is available. */ | |
1d550c82 PA |
74 | extern int strncmp_iw (const char *string1, const char *string2, |
75 | size_t string2_len); | |
76 | ||
77 | /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any | |
78 | differences in whitespace. Returns 0 if they match, non-zero if | |
79 | they don't (slightly different than strcmp()'s range of return | |
80 | values). | |
81 | ||
82 | As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO". | |
83 | This "feature" is useful when searching for matching C++ function | |
84 | names (such as if the user types 'break FOO', where FOO is a | |
0662b6a7 PA |
85 | mangled C++ function). |
86 | ||
87 | Note: passes language_minimal to strncmp_iw_with_mode, and should | |
88 | therefore be avoided if a more suitable language is available. */ | |
1d550c82 | 89 | extern int strcmp_iw (const char *string1, const char *string2); |
48faced0 DE |
90 | |
91 | extern int strcmp_iw_ordered (const char *, const char *); | |
92 | ||
459a2e4c TT |
93 | /* Return true if the strings are equal. */ |
94 | ||
95 | extern bool streq (const char *, const char *); | |
96 | ||
97 | /* A variant of streq that is suitable for use as an htab | |
98 | callback. */ | |
99 | ||
100 | extern int streq_hash (const void *, const void *); | |
48faced0 | 101 | |
a121b7c1 | 102 | extern int subset_compare (const char *, const char *); |
48faced0 | 103 | |
47e77640 PA |
104 | /* Compare C strings for std::sort. */ |
105 | ||
106 | static inline bool | |
107 | compare_cstrings (const char *str1, const char *str2) | |
108 | { | |
109 | return strcmp (str1, str2) < 0; | |
110 | } | |
111 | ||
48faced0 DE |
112 | /* A wrapper for bfd_errmsg to produce a more helpful error message |
113 | in the case of bfd_error_file_ambiguously recognized. | |
114 | MATCHING, if non-NULL, is the corresponding argument to | |
115 | bfd_check_format_matches, and will be freed. */ | |
116 | ||
803c08d0 | 117 | extern std::string gdb_bfd_errmsg (bfd_error_type error_tag, char **matching); |
bd712aed DE |
118 | |
119 | /* Reset the prompt_for_continue clock. */ | |
120 | void reset_prompt_for_continue_wait_time (void); | |
121 | /* Return the time spent in prompt_for_continue. */ | |
dcb07cfa | 122 | std::chrono::steady_clock::duration get_prompt_for_continue_wait_time (); |
48faced0 DE |
123 | \f |
124 | /* Parsing utilites. */ | |
125 | ||
c0939df1 | 126 | extern int parse_pid_to_attach (const char *args); |
48faced0 | 127 | |
d7561cbb | 128 | extern int parse_escape (struct gdbarch *, const char **); |
48faced0 | 129 | |
773a1edc TT |
130 | /* A wrapper for an array of char* that was allocated in the way that |
131 | 'buildargv' does, and should be freed with 'freeargv'. */ | |
132 | ||
133 | class gdb_argv | |
134 | { | |
135 | public: | |
136 | ||
137 | /* A constructor that initializes to NULL. */ | |
138 | ||
139 | gdb_argv () | |
140 | : m_argv (NULL) | |
141 | { | |
142 | } | |
143 | ||
144 | /* A constructor that calls buildargv on STR. STR may be NULL, in | |
145 | which case this object is initialized with a NULL array. If | |
146 | buildargv fails due to out-of-memory, call malloc_failure. | |
147 | Therefore, the value is guaranteed to be non-NULL, unless the | |
148 | parameter itself is NULL. */ | |
149 | ||
150 | explicit gdb_argv (const char *str) | |
151 | : m_argv (NULL) | |
152 | { | |
153 | reset (str); | |
154 | } | |
155 | ||
156 | /* A constructor that takes ownership of an existing array. */ | |
157 | ||
158 | explicit gdb_argv (char **array) | |
159 | : m_argv (array) | |
160 | { | |
161 | } | |
162 | ||
163 | gdb_argv (const gdb_argv &) = delete; | |
164 | gdb_argv &operator= (const gdb_argv &) = delete; | |
165 | ||
166 | ~gdb_argv () | |
167 | { | |
168 | freeargv (m_argv); | |
169 | } | |
170 | ||
171 | /* Call buildargv on STR, storing the result in this object. Any | |
172 | previous state is freed. STR may be NULL, in which case this | |
173 | object is reset with a NULL array. If buildargv fails due to | |
174 | out-of-memory, call malloc_failure. Therefore, the value is | |
175 | guaranteed to be non-NULL, unless the parameter itself is | |
176 | NULL. */ | |
177 | ||
178 | void reset (const char *str); | |
179 | ||
180 | /* Return the underlying array. */ | |
181 | ||
182 | char **get () | |
183 | { | |
184 | return m_argv; | |
185 | } | |
186 | ||
187 | /* Return the underlying array, transferring ownership to the | |
188 | caller. */ | |
189 | ||
18cb7c9f | 190 | ATTRIBUTE_UNUSED_RESULT char **release () |
773a1edc TT |
191 | { |
192 | char **result = m_argv; | |
193 | m_argv = NULL; | |
194 | return result; | |
195 | } | |
196 | ||
197 | /* Return the number of items in the array. */ | |
198 | ||
199 | int count () const | |
200 | { | |
201 | return countargv (m_argv); | |
202 | } | |
203 | ||
204 | /* Index into the array. */ | |
205 | ||
206 | char *operator[] (int arg) | |
207 | { | |
208 | gdb_assert (m_argv != NULL); | |
209 | return m_argv[arg]; | |
210 | } | |
211 | ||
212 | /* The iterator type. */ | |
213 | ||
214 | typedef char **iterator; | |
215 | ||
216 | /* Return an iterator pointing to the start of the array. */ | |
217 | ||
218 | iterator begin () | |
219 | { | |
220 | return m_argv; | |
221 | } | |
222 | ||
223 | /* Return an iterator pointing to the end of the array. */ | |
224 | ||
225 | iterator end () | |
226 | { | |
227 | return m_argv + count (); | |
228 | } | |
229 | ||
91975afd | 230 | bool operator!= (std::nullptr_t) |
773a1edc TT |
231 | { |
232 | return m_argv != NULL; | |
233 | } | |
234 | ||
91975afd | 235 | bool operator== (std::nullptr_t) |
773a1edc TT |
236 | { |
237 | return m_argv == NULL; | |
238 | } | |
239 | ||
240 | private: | |
241 | ||
242 | /* The wrapped array. */ | |
243 | ||
244 | char **m_argv; | |
245 | }; | |
246 | ||
48faced0 DE |
247 | \f |
248 | /* Cleanup utilities. */ | |
249 | ||
6349f452 TT |
250 | /* A deleter for a hash table. */ |
251 | struct htab_deleter | |
252 | { | |
253 | void operator() (htab *ptr) const | |
254 | { | |
255 | htab_delete (ptr); | |
256 | } | |
257 | }; | |
258 | ||
259 | /* A unique_ptr wrapper for htab_t. */ | |
260 | typedef std::unique_ptr<htab, htab_deleter> htab_up; | |
261 | ||
48faced0 DE |
262 | extern void init_page_info (void); |
263 | ||
b95de2b7 TT |
264 | /* Temporarily set BATCH_FLAG and the associated unlimited terminal size. |
265 | Restore when destroyed. */ | |
266 | ||
267 | struct set_batch_flag_and_restore_page_info | |
268 | { | |
269 | public: | |
270 | ||
271 | set_batch_flag_and_restore_page_info (); | |
272 | ~set_batch_flag_and_restore_page_info (); | |
273 | ||
274 | DISABLE_COPY_AND_ASSIGN (set_batch_flag_and_restore_page_info); | |
275 | ||
276 | private: | |
277 | ||
278 | /* Note that this doesn't use scoped_restore, because it's important | |
279 | to control the ordering of operations in the destruction, and it | |
280 | was simpler to avoid introducing a new ad hoc class. */ | |
281 | unsigned m_save_lines_per_page; | |
282 | unsigned m_save_chars_per_line; | |
283 | int m_save_batch_flag; | |
284 | }; | |
48faced0 | 285 | |
48faced0 DE |
286 | \f |
287 | /* Path utilities. */ | |
288 | ||
48faced0 DE |
289 | extern int gdb_filename_fnmatch (const char *pattern, const char *string, |
290 | int flags); | |
291 | ||
292 | extern void substitute_path_component (char **stringp, const char *from, | |
293 | const char *to); | |
294 | ||
d721ba37 | 295 | std::string ldirname (const char *filename); |
cce0e923 DE |
296 | |
297 | extern int count_path_elements (const char *path); | |
298 | ||
299 | extern const char *strip_leading_path_elements (const char *path, int n); | |
48faced0 DE |
300 | \f |
301 | /* GDB output, ui_file utilities. */ | |
302 | ||
303 | struct ui_file; | |
304 | ||
48faced0 DE |
305 | extern int query (const char *, ...) ATTRIBUTE_PRINTF (1, 2); |
306 | extern int nquery (const char *, ...) ATTRIBUTE_PRINTF (1, 2); | |
307 | extern int yquery (const char *, ...) ATTRIBUTE_PRINTF (1, 2); | |
308 | ||
309 | extern void begin_line (void); | |
310 | ||
d2c0eef4 | 311 | extern void wrap_here (const char *); |
48faced0 DE |
312 | |
313 | extern void reinitialize_more_filter (void); | |
314 | ||
491144b5 | 315 | extern bool pagination_enabled; |
74da6f00 | 316 | |
79aa2fe8 PA |
317 | extern struct ui_file **current_ui_gdb_stdout_ptr (void); |
318 | extern struct ui_file **current_ui_gdb_stdin_ptr (void); | |
319 | extern struct ui_file **current_ui_gdb_stderr_ptr (void); | |
320 | extern struct ui_file **current_ui_gdb_stdlog_ptr (void); | |
321 | ||
322 | /* The current top level's ui_file streams. */ | |
323 | ||
48faced0 | 324 | /* Normal results */ |
79aa2fe8 | 325 | #define gdb_stdout (*current_ui_gdb_stdout_ptr ()) |
48faced0 | 326 | /* Input stream */ |
79aa2fe8 | 327 | #define gdb_stdin (*current_ui_gdb_stdin_ptr ()) |
48faced0 | 328 | /* Serious error notifications */ |
79aa2fe8 | 329 | #define gdb_stderr (*current_ui_gdb_stderr_ptr ()) |
48faced0 DE |
330 | /* Log/debug/trace messages that should bypass normal stdout/stderr |
331 | filtering. For moment, always call this stream using | |
332 | *_unfiltered. In the very near future that restriction shall be | |
333 | removed - either call shall be unfiltered. (cagney 1999-06-13). */ | |
79aa2fe8 PA |
334 | #define gdb_stdlog (*current_ui_gdb_stdlog_ptr ()) |
335 | ||
336 | /* Truly global ui_file streams. These are all defined in main.c. */ | |
337 | ||
48faced0 DE |
338 | /* Target output that should bypass normal stdout/stderr filtering. |
339 | For moment, always call this stream using *_unfiltered. In the | |
340 | very near future that restriction shall be removed - either call | |
341 | shall be unfiltered. (cagney 1999-07-02). */ | |
342 | extern struct ui_file *gdb_stdtarg; | |
343 | extern struct ui_file *gdb_stdtargerr; | |
344 | extern struct ui_file *gdb_stdtargin; | |
345 | ||
d6e5e7f7 PP |
346 | /* Set the screen dimensions to WIDTH and HEIGHT. */ |
347 | ||
348 | extern void set_screen_width_and_height (int width, int height); | |
349 | ||
48faced0 | 350 | /* More generic printf like operations. Filtered versions may return |
2a3c1174 PA |
351 | non-locally on error. As an extension over plain printf, these |
352 | support some GDB-specific format specifiers. Particularly useful | |
353 | here are the styling formatters: '%p[', '%p]' and '%ps'. See | |
354 | ui_out::message for details. */ | |
48faced0 DE |
355 | |
356 | extern void fputs_filtered (const char *, struct ui_file *); | |
357 | ||
358 | extern void fputs_unfiltered (const char *, struct ui_file *); | |
359 | ||
360 | extern int fputc_filtered (int c, struct ui_file *); | |
361 | ||
362 | extern int fputc_unfiltered (int c, struct ui_file *); | |
363 | ||
364 | extern int putchar_filtered (int c); | |
365 | ||
366 | extern int putchar_unfiltered (int c); | |
367 | ||
368 | extern void puts_filtered (const char *); | |
369 | ||
370 | extern void puts_unfiltered (const char *); | |
371 | ||
372 | extern void puts_filtered_tabular (char *string, int width, int right); | |
373 | ||
374 | extern void puts_debug (char *prefix, char *string, char *suffix); | |
375 | ||
376 | extern void vprintf_filtered (const char *, va_list) ATTRIBUTE_PRINTF (1, 0); | |
377 | ||
378 | extern void vfprintf_filtered (struct ui_file *, const char *, va_list) | |
379 | ATTRIBUTE_PRINTF (2, 0); | |
380 | ||
381 | extern void fprintf_filtered (struct ui_file *, const char *, ...) | |
382 | ATTRIBUTE_PRINTF (2, 3); | |
383 | ||
384 | extern void fprintfi_filtered (int, struct ui_file *, const char *, ...) | |
385 | ATTRIBUTE_PRINTF (3, 4); | |
386 | ||
387 | extern void printf_filtered (const char *, ...) ATTRIBUTE_PRINTF (1, 2); | |
388 | ||
389 | extern void printfi_filtered (int, const char *, ...) ATTRIBUTE_PRINTF (2, 3); | |
390 | ||
391 | extern void vprintf_unfiltered (const char *, va_list) ATTRIBUTE_PRINTF (1, 0); | |
392 | ||
393 | extern void vfprintf_unfiltered (struct ui_file *, const char *, va_list) | |
394 | ATTRIBUTE_PRINTF (2, 0); | |
395 | ||
396 | extern void fprintf_unfiltered (struct ui_file *, const char *, ...) | |
397 | ATTRIBUTE_PRINTF (2, 3); | |
398 | ||
399 | extern void printf_unfiltered (const char *, ...) ATTRIBUTE_PRINTF (1, 2); | |
400 | ||
401 | extern void print_spaces (int, struct ui_file *); | |
402 | ||
403 | extern void print_spaces_filtered (int, struct ui_file *); | |
404 | ||
405 | extern char *n_spaces (int); | |
406 | ||
407 | extern void fputstr_filtered (const char *str, int quotr, | |
408 | struct ui_file * stream); | |
409 | ||
410 | extern void fputstr_unfiltered (const char *str, int quotr, | |
411 | struct ui_file * stream); | |
412 | ||
413 | extern void fputstrn_filtered (const char *str, int n, int quotr, | |
414 | struct ui_file * stream); | |
415 | ||
7c4e78cf SM |
416 | typedef int (*do_fputc_ftype) (int c, ui_file *stream); |
417 | ||
48faced0 | 418 | extern void fputstrn_unfiltered (const char *str, int n, int quotr, |
7c4e78cf | 419 | do_fputc_ftype do_fputc, |
48faced0 DE |
420 | struct ui_file * stream); |
421 | ||
2437fd32 GB |
422 | /* Return nonzero if filtered printing is initialized. */ |
423 | extern int filtered_printing_initialized (void); | |
424 | ||
cbe56571 TT |
425 | /* Like fprintf_filtered, but styles the output according to STYLE, |
426 | when appropriate. */ | |
427 | ||
428 | extern void fprintf_styled (struct ui_file *stream, | |
429 | const ui_file_style &style, | |
430 | const char *fmt, | |
431 | ...) | |
432 | ATTRIBUTE_PRINTF (3, 4); | |
433 | ||
2a3c1174 PA |
434 | extern void vfprintf_styled (struct ui_file *stream, |
435 | const ui_file_style &style, | |
436 | const char *fmt, | |
437 | va_list args) | |
438 | ATTRIBUTE_PRINTF (3, 0); | |
439 | ||
440 | /* Like vfprintf_styled, but do not process gdb-specific format | |
441 | specifiers. */ | |
442 | extern void vfprintf_styled_no_gdbfmt (struct ui_file *stream, | |
443 | const ui_file_style &style, | |
444 | bool filter, | |
445 | const char *fmt, va_list args) | |
446 | ATTRIBUTE_PRINTF (4, 0); | |
447 | ||
cbe56571 TT |
448 | /* Like fputs_filtered, but styles the output according to STYLE, when |
449 | appropriate. */ | |
450 | ||
451 | extern void fputs_styled (const char *linebuffer, | |
452 | const ui_file_style &style, | |
453 | struct ui_file *stream); | |
454 | ||
2a3c1174 PA |
455 | /* Unfiltered variant of fputs_styled. */ |
456 | ||
457 | extern void fputs_styled_unfiltered (const char *linebuffer, | |
458 | const ui_file_style &style, | |
459 | struct ui_file *stream); | |
460 | ||
9303eb2f PW |
461 | /* Like fputs_styled, but uses highlight_style to highlight the |
462 | parts of STR that match HIGHLIGHT. */ | |
463 | ||
464 | extern void fputs_highlighted (const char *str, const compiled_regex &highlight, | |
465 | struct ui_file *stream); | |
466 | ||
ef1dfa36 TT |
467 | /* Reset the terminal style to the default, if needed. */ |
468 | ||
469 | extern void reset_terminal_style (struct ui_file *stream); | |
470 | ||
48faced0 | 471 | /* Display the host ADDR on STREAM formatted as ``0x%x''. */ |
b80c3053 PA |
472 | extern void gdb_print_host_address_1 (const void *addr, struct ui_file *stream); |
473 | ||
474 | /* Wrapper that avoids adding a pointless cast to all callers. */ | |
475 | #define gdb_print_host_address(ADDR, STREAM) \ | |
476 | gdb_print_host_address_1 ((const void *) ADDR, STREAM) | |
48faced0 | 477 | |
a738ea1d YQ |
478 | /* Return the address only having significant bits. */ |
479 | extern CORE_ADDR address_significant (gdbarch *gdbarch, CORE_ADDR addr); | |
480 | ||
48faced0 DE |
481 | /* Convert CORE_ADDR to string in platform-specific manner. |
482 | This is usually formatted similar to 0x%lx. */ | |
483 | extern const char *paddress (struct gdbarch *gdbarch, CORE_ADDR addr); | |
484 | ||
485 | /* Return a string representation in hexadecimal notation of ADDRESS, | |
486 | which is suitable for printing. */ | |
487 | ||
488 | extern const char *print_core_address (struct gdbarch *gdbarch, | |
489 | CORE_ADDR address); | |
490 | ||
491 | /* Callback hash_f and eq_f for htab_create_alloc or htab_create_alloc_ex. */ | |
492 | extern hashval_t core_addr_hash (const void *ap); | |
493 | extern int core_addr_eq (const void *ap, const void *bp); | |
494 | ||
48faced0 DE |
495 | extern CORE_ADDR string_to_core_addr (const char *my_string); |
496 | ||
48faced0 DE |
497 | extern void fprintf_symbol_filtered (struct ui_file *, const char *, |
498 | enum language, int); | |
499 | ||
598d3636 JK |
500 | extern void throw_perror_with_name (enum errors errcode, const char *string) |
501 | ATTRIBUTE_NORETURN; | |
48faced0 | 502 | |
7c647d61 JB |
503 | extern void perror_warning_with_name (const char *string); |
504 | ||
48faced0 DE |
505 | extern void print_sys_errmsg (const char *, int); |
506 | \f | |
507 | /* Warnings and error messages. */ | |
508 | ||
509 | extern void (*deprecated_error_begin_hook) (void); | |
510 | ||
48faced0 DE |
511 | /* Message to be printed before the warning message, when a warning occurs. */ |
512 | ||
69bbf465 | 513 | extern const char *warning_pre_print; |
48faced0 | 514 | |
d7e74731 | 515 | extern void error_stream (const string_file &) ATTRIBUTE_NORETURN; |
48faced0 | 516 | |
57fcfb1b GB |
517 | extern void demangler_vwarning (const char *file, int line, |
518 | const char *, va_list ap) | |
519 | ATTRIBUTE_PRINTF (3, 0); | |
520 | ||
521 | extern void demangler_warning (const char *file, int line, | |
522 | const char *, ...) ATTRIBUTE_PRINTF (3, 4); | |
523 | ||
48faced0 DE |
524 | \f |
525 | /* Misc. utilities. */ | |
526 | ||
527 | /* Allocation and deallocation functions for the libiberty hash table | |
528 | which use obstacks. */ | |
529 | void *hashtab_obstack_allocate (void *data, size_t size, size_t count); | |
530 | void dummy_obstack_deallocate (void *object, void *data); | |
531 | ||
532 | #ifdef HAVE_WAITPID | |
533 | extern pid_t wait_to_die_with_timeout (pid_t pid, int *status, int timeout); | |
534 | #endif | |
535 | ||
48faced0 DE |
536 | extern int myread (int, char *, int); |
537 | ||
eae7090b GB |
538 | /* Resource limits used by getrlimit and setrlimit. */ |
539 | ||
540 | enum resource_limit_kind | |
541 | { | |
542 | LIMIT_CUR, | |
543 | LIMIT_MAX | |
544 | }; | |
545 | ||
546 | /* Check whether GDB will be able to dump core using the dump_core | |
547 | function. Returns zero if GDB cannot or should not dump core. | |
548 | If LIMIT_KIND is LIMIT_CUR the user's soft limit will be respected. | |
549 | If LIMIT_KIND is LIMIT_MAX only the hard limit will be respected. */ | |
550 | ||
551 | extern int can_dump_core (enum resource_limit_kind limit_kind); | |
552 | ||
553 | /* Print a warning that we cannot dump core. */ | |
554 | ||
555 | extern void warn_cant_dump_core (const char *reason); | |
556 | ||
557 | /* Dump core trying to increase the core soft limit to hard limit | |
558 | first. */ | |
559 | ||
560 | extern void dump_core (void); | |
561 | ||
a99bc3d2 JB |
562 | /* Copy NBITS bits from SOURCE to DEST starting at the given bit |
563 | offsets. Use the bit order as specified by BITS_BIG_ENDIAN. | |
564 | Source and destination buffers must not overlap. */ | |
565 | ||
566 | extern void copy_bitwise (gdb_byte *dest, ULONGEST dest_offset, | |
567 | const gdb_byte *source, ULONGEST source_offset, | |
568 | ULONGEST nbits, int bits_big_endian); | |
569 | ||
1a6ff1a9 CB |
570 | /* A fast hashing function. This can be used to hash strings in a fast way |
571 | when the length is known. If no fast hashing library is available, falls | |
572 | back to iterative_hash from libiberty. */ | |
573 | ||
574 | static inline unsigned int | |
575 | fast_hash (const char* str, size_t len) | |
576 | { | |
ccb1ba62 CB |
577 | #ifdef HAVE_LIBXXHASH |
578 | return XXH64 (str, len, 0); | |
579 | #else | |
1a6ff1a9 | 580 | return iterative_hash (str, len, 0); |
ccb1ba62 | 581 | #endif |
1a6ff1a9 CB |
582 | } |
583 | ||
48faced0 | 584 | #endif /* UTILS_H */ |