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6599da04 | 1 | /* Function declarations for libiberty. |
01f537ab | 2 | |
a584cf65 | 3 | Copyright 2001, 2002, 2005 Free Software Foundation, Inc. |
01f537ab NC |
4 | |
5 | Note - certain prototypes declared in this header file are for | |
6 | functions whoes implementation copyright does not belong to the | |
7 | FSF. Those prototypes are present in this file for reference | |
8 | purposes only and their presence in this file should not construed | |
9 | as an indication of ownership by the FSF of the implementation of | |
10 | those functions in any way or form whatsoever. | |
11 | ||
12 | This program is free software; you can redistribute it and/or modify | |
13 | it under the terms of the GNU General Public License as published by | |
14 | the Free Software Foundation; either version 2, or (at your option) | |
15 | any later version. | |
16 | ||
17 | This program is distributed in the hope that it will be useful, | |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
21 | ||
22 | You should have received a copy of the GNU General Public License | |
23 | along with this program; if not, write to the Free Software | |
d6d47ea0 NC |
24 | Foundation, Inc., 51 Franklin Street - Fifth Floor, |
25 | Boston, MA 02110-1301, USA. | |
01f537ab | 26 | |
6599da04 JM |
27 | Written by Cygnus Support, 1994. |
28 | ||
29 | The libiberty library provides a number of functions which are | |
30 | missing on some operating systems. We do not declare those here, | |
31 | to avoid conflicts with the system header files on operating | |
32 | systems that do support those functions. In this file we only | |
33 | declare those functions which are specific to libiberty. */ | |
34 | ||
35 | #ifndef LIBIBERTY_H | |
36 | #define LIBIBERTY_H | |
37 | ||
5a4917e5 JL |
38 | #ifdef __cplusplus |
39 | extern "C" { | |
40 | #endif | |
41 | ||
6599da04 JM |
42 | #include "ansidecl.h" |
43 | ||
d1209685 ZW |
44 | /* Get a definition for size_t. */ |
45 | #include <stddef.h> | |
46 | /* Get a definition for va_list. */ | |
47 | #include <stdarg.h> | |
d1209685 | 48 | |
a584cf65 ILT |
49 | #include <stdio.h> |
50 | ||
6feaa084 KG |
51 | /* If the OS supports it, ensure that the supplied stream is setup to |
52 | avoid any multi-threaded locking. Otherwise leave the FILE pointer | |
53 | unchanged. If the stream is NULL do nothing. */ | |
54 | ||
55 | extern void unlock_stream (FILE *); | |
56 | ||
32e82bd8 KG |
57 | /* If the OS supports it, ensure that the standard I/O streams, stdin, |
58 | stdout and stderr are setup to avoid any multi-threaded locking. | |
59 | Otherwise do nothing. */ | |
60 | ||
61 | extern void unlock_std_streams (void); | |
62 | ||
78a7dc90 KG |
63 | /* Open and return a FILE pointer. If the OS supports it, ensure that |
64 | the stream is setup to avoid any multi-threaded locking. Otherwise | |
65 | return the FILE pointer unchanged. */ | |
66 | ||
27c556ec KG |
67 | extern FILE *fopen_unlocked (const char *, const char *); |
68 | extern FILE *fdopen_unlocked (int, const char *); | |
69 | extern FILE *freopen_unlocked (const char *, const char *, FILE *); | |
78a7dc90 | 70 | |
6599da04 JM |
71 | /* Build an argument vector from a string. Allocates memory using |
72 | malloc. Use freeargv to free the vector. */ | |
73 | ||
9486db4f | 74 | extern char **buildargv (const char *) ATTRIBUTE_MALLOC; |
6599da04 JM |
75 | |
76 | /* Free a vector returned by buildargv. */ | |
77 | ||
9486db4f | 78 | extern void freeargv (char **); |
6599da04 | 79 | |
5a4917e5 JL |
80 | /* Duplicate an argument vector. Allocates memory using malloc. Use |
81 | freeargv to free the vector. */ | |
82 | ||
9486db4f | 83 | extern char **dupargv (char **) ATTRIBUTE_MALLOC; |
5a4917e5 JL |
84 | |
85 | ||
6599da04 JM |
86 | /* Return the last component of a path name. Note that we can't use a |
87 | prototype here because the parameter is declared inconsistently | |
88 | across different systems, sometimes as "char *" and sometimes as | |
89 | "const char *" */ | |
90 | ||
f31e826b KG |
91 | /* HAVE_DECL_* is a three-state macro: undefined, 0 or 1. If it is |
92 | undefined, we haven't run the autoconf check so provide the | |
93 | declaration without arguments. If it is 0, we checked and failed | |
94 | to find the declaration so provide a fully prototyped one. If it | |
95 | is 1, we found it so don't provide any declaration at all. */ | |
66443ad2 | 96 | #if !HAVE_DECL_BASENAME |
ff06bf4b | 97 | #if defined (__GNU_LIBRARY__ ) || defined (__linux__) || defined (__FreeBSD__) || defined (__OpenBSD__) || defined(__NetBSD__) || defined (__CYGWIN__) || defined (__CYGWIN32__) || defined (__MINGW32__) || defined (HAVE_DECL_BASENAME) |
9486db4f | 98 | extern char *basename (const char *); |
6599da04 | 99 | #else |
dbaef7e2 SE |
100 | /* Do not allow basename to be used if there is no prototype seen. We |
101 | either need to use the above prototype or have one from | |
102 | autoconf which would result in HAVE_DECL_BASENAME being set. */ | |
103 | #define basename basename_cannot_be_used_without_a_prototype | |
66443ad2 | 104 | #endif |
6599da04 JM |
105 | #endif |
106 | ||
2b757d51 NB |
107 | /* A well-defined basename () that is always compiled in. */ |
108 | ||
9486db4f | 109 | extern const char *lbasename (const char *); |
2b757d51 | 110 | |
378ca31e DJ |
111 | /* A well-defined realpath () that is always compiled in. */ |
112 | ||
9486db4f | 113 | extern char *lrealpath (const char *); |
378ca31e | 114 | |
69ee340e KG |
115 | /* Concatenate an arbitrary number of strings. You must pass NULL as |
116 | the last argument of this function, to terminate the list of | |
117 | strings. Allocates memory using xmalloc. */ | |
6599da04 | 118 | |
9486db4f | 119 | extern char *concat (const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_SENTINEL; |
6599da04 | 120 | |
ad43d46f KG |
121 | /* Concatenate an arbitrary number of strings. You must pass NULL as |
122 | the last argument of this function, to terminate the list of | |
123 | strings. Allocates memory using xmalloc. The first argument is | |
124 | not one of the strings to be concatenated, but if not NULL is a | |
125 | pointer to be freed after the new string is created, similar to the | |
126 | way xrealloc works. */ | |
127 | ||
9486db4f | 128 | extern char *reconcat (char *, const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_SENTINEL; |
ad43d46f | 129 | |
c793eea7 | 130 | /* Determine the length of concatenating an arbitrary number of |
69ee340e KG |
131 | strings. You must pass NULL as the last argument of this function, |
132 | to terminate the list of strings. */ | |
c793eea7 | 133 | |
9486db4f | 134 | extern unsigned long concat_length (const char *, ...) ATTRIBUTE_SENTINEL; |
c793eea7 KG |
135 | |
136 | /* Concatenate an arbitrary number of strings into a SUPPLIED area of | |
69ee340e KG |
137 | memory. You must pass NULL as the last argument of this function, |
138 | to terminate the list of strings. The supplied memory is assumed | |
139 | to be large enough. */ | |
c793eea7 | 140 | |
9486db4f | 141 | extern char *concat_copy (char *, const char *, ...) ATTRIBUTE_SENTINEL; |
c793eea7 KG |
142 | |
143 | /* Concatenate an arbitrary number of strings into a GLOBAL area of | |
69ee340e KG |
144 | memory. You must pass NULL as the last argument of this function, |
145 | to terminate the list of strings. The supplied memory is assumed | |
146 | to be large enough. */ | |
c793eea7 | 147 | |
9486db4f | 148 | extern char *concat_copy2 (const char *, ...) ATTRIBUTE_SENTINEL; |
c793eea7 KG |
149 | |
150 | /* This is the global area used by concat_copy2. */ | |
151 | ||
152 | extern char *libiberty_concat_ptr; | |
153 | ||
69ee340e KG |
154 | /* Concatenate an arbitrary number of strings. You must pass NULL as |
155 | the last argument of this function, to terminate the list of | |
156 | strings. Allocates memory using alloca. The arguments are | |
157 | evaluated twice! */ | |
c793eea7 | 158 | #define ACONCAT(ACONCAT_PARAMS) \ |
d7cf8390 | 159 | (libiberty_concat_ptr = (char *) alloca (concat_length ACONCAT_PARAMS + 1), \ |
c793eea7 KG |
160 | concat_copy2 ACONCAT_PARAMS) |
161 | ||
6599da04 JM |
162 | /* Check whether two file descriptors refer to the same file. */ |
163 | ||
9486db4f | 164 | extern int fdmatch (int fd1, int fd2); |
6599da04 | 165 | |
f78c1452 MM |
166 | /* Return the position of the first bit set in the argument. */ |
167 | /* Prototypes vary from system to system, so we only provide a | |
168 | prototype on systems where we know that we need it. */ | |
169 | #if defined (HAVE_DECL_FFS) && !HAVE_DECL_FFS | |
170 | extern int ffs(int); | |
171 | #endif | |
172 | ||
25c29e1e KG |
173 | /* Get the working directory. The result is cached, so don't call |
174 | chdir() between calls to getpwd(). */ | |
175 | ||
9486db4f | 176 | extern char * getpwd (void); |
25c29e1e | 177 | |
17049f0b MM |
178 | /* Get the current time. */ |
179 | /* Prototypes vary from system to system, so we only provide a | |
180 | prototype on systems where we know that we need it. */ | |
181 | #ifdef __MINGW32__ | |
182 | /* Forward declaration to avoid #include <sys/time.h>. */ | |
183 | struct timeval; | |
9486db4f | 184 | extern int gettimeofday (struct timeval *, void *); |
17049f0b MM |
185 | #endif |
186 | ||
6599da04 JM |
187 | /* Get the amount of time the process has run, in microseconds. */ |
188 | ||
9486db4f | 189 | extern long get_run_time (void); |
6599da04 | 190 | |
42766f8d DJ |
191 | /* Generate a relocated path to some installation directory. Allocates |
192 | return value using malloc. */ | |
193 | ||
9486db4f GDR |
194 | extern char *make_relative_prefix (const char *, const char *, |
195 | const char *) ATTRIBUTE_MALLOC; | |
42766f8d | 196 | |
6599da04 JM |
197 | /* Choose a temporary directory to use for scratch files. */ |
198 | ||
9486db4f | 199 | extern char *choose_temp_base (void) ATTRIBUTE_MALLOC; |
6599da04 | 200 | |
5a657fc3 KG |
201 | /* Return a temporary file name or NULL if unable to create one. */ |
202 | ||
9486db4f | 203 | extern char *make_temp_file (const char *) ATTRIBUTE_MALLOC; |
5a657fc3 | 204 | |
c363985d JB |
205 | /* Remove a link to a file unless it is special. */ |
206 | ||
9486db4f | 207 | extern int unlink_if_ordinary (const char *); |
c363985d | 208 | |
6599da04 JM |
209 | /* Allocate memory filled with spaces. Allocates using malloc. */ |
210 | ||
9486db4f | 211 | extern const char *spaces (int count); |
6599da04 JM |
212 | |
213 | /* Return the maximum error number for which strerror will return a | |
214 | string. */ | |
215 | ||
9486db4f | 216 | extern int errno_max (void); |
6599da04 JM |
217 | |
218 | /* Return the name of an errno value (e.g., strerrno (EINVAL) returns | |
219 | "EINVAL"). */ | |
220 | ||
9486db4f | 221 | extern const char *strerrno (int); |
6599da04 JM |
222 | |
223 | /* Given the name of an errno value, return the value. */ | |
224 | ||
9486db4f | 225 | extern int strtoerrno (const char *); |
6599da04 JM |
226 | |
227 | /* ANSI's strerror(), but more robust. */ | |
228 | ||
9486db4f | 229 | extern char *xstrerror (int); |
6599da04 JM |
230 | |
231 | /* Return the maximum signal number for which strsignal will return a | |
232 | string. */ | |
233 | ||
9486db4f | 234 | extern int signo_max (void); |
6599da04 JM |
235 | |
236 | /* Return a signal message string for a signal number | |
237 | (e.g., strsignal (SIGHUP) returns something like "Hangup"). */ | |
238 | /* This is commented out as it can conflict with one in system headers. | |
239 | We still document its existence though. */ | |
240 | ||
9486db4f | 241 | /*extern const char *strsignal (int);*/ |
6599da04 JM |
242 | |
243 | /* Return the name of a signal number (e.g., strsigno (SIGHUP) returns | |
244 | "SIGHUP"). */ | |
245 | ||
9486db4f | 246 | extern const char *strsigno (int); |
6599da04 JM |
247 | |
248 | /* Given the name of a signal, return its number. */ | |
249 | ||
9486db4f | 250 | extern int strtosigno (const char *); |
6599da04 JM |
251 | |
252 | /* Register a function to be run by xexit. Returns 0 on success. */ | |
253 | ||
9486db4f | 254 | extern int xatexit (void (*fn) (void)); |
6599da04 JM |
255 | |
256 | /* Exit, calling all the functions registered with xatexit. */ | |
257 | ||
9486db4f | 258 | extern void xexit (int status) ATTRIBUTE_NORETURN; |
6599da04 JM |
259 | |
260 | /* Set the program name used by xmalloc. */ | |
261 | ||
9486db4f | 262 | extern void xmalloc_set_program_name (const char *); |
6599da04 | 263 | |
d1209685 | 264 | /* Report an allocation failure. */ |
9486db4f | 265 | extern void xmalloc_failed (size_t) ATTRIBUTE_NORETURN; |
d1209685 | 266 | |
6599da04 JM |
267 | /* Allocate memory without fail. If malloc fails, this will print a |
268 | message to stderr (using the name set by xmalloc_set_program_name, | |
269 | if any) and then call xexit. */ | |
270 | ||
8766be86 | 271 | extern void *xmalloc (size_t) ATTRIBUTE_MALLOC; |
6599da04 | 272 | |
d9465687 KG |
273 | /* Reallocate memory without fail. This works like xmalloc. Note, |
274 | realloc type functions are not suitable for attribute malloc since | |
275 | they may return the same address across multiple calls. */ | |
6599da04 | 276 | |
8766be86 | 277 | extern void *xrealloc (void *, size_t); |
6599da04 | 278 | |
67d0f6ab KG |
279 | /* Allocate memory without fail and set it to zero. This works like |
280 | xmalloc. */ | |
281 | ||
8766be86 | 282 | extern void *xcalloc (size_t, size_t) ATTRIBUTE_MALLOC; |
67d0f6ab | 283 | |
6599da04 JM |
284 | /* Copy a string into a memory buffer without fail. */ |
285 | ||
9486db4f | 286 | extern char *xstrdup (const char *) ATTRIBUTE_MALLOC; |
6599da04 | 287 | |
17998b22 KG |
288 | /* Copy at most N characters from string into a buffer without fail. */ |
289 | ||
9486db4f | 290 | extern char *xstrndup (const char *, size_t) ATTRIBUTE_MALLOC; |
17998b22 | 291 | |
66599806 JG |
292 | /* Copy an existing memory buffer to a new memory buffer without fail. */ |
293 | ||
8766be86 | 294 | extern void *xmemdup (const void *, size_t, size_t) ATTRIBUTE_MALLOC; |
66599806 | 295 | |
9308be90 | 296 | /* Physical memory routines. Return values are in BYTES. */ |
9486db4f GDR |
297 | extern double physmem_total (void); |
298 | extern double physmem_available (void); | |
a354191e | 299 | |
b50a5a95 BI |
300 | |
301 | /* These macros provide a K&R/C89/C++-friendly way of allocating structures | |
302 | with nice encapsulation. The XDELETE*() macros are technically | |
303 | superfluous, but provided here for symmetry. Using them consistently | |
304 | makes it easier to update client code to use different allocators such | |
305 | as new/delete and new[]/delete[]. */ | |
306 | ||
307 | /* Scalar allocators. */ | |
308 | ||
309 | #define XNEW(T) ((T *) xmalloc (sizeof (T))) | |
310 | #define XCNEW(T) ((T *) xcalloc (1, sizeof (T))) | |
b1e8c0fd | 311 | #define XDELETE(P) free ((void*) (P)) |
b50a5a95 BI |
312 | |
313 | /* Array allocators. */ | |
314 | ||
315 | #define XNEWVEC(T, N) ((T *) xmalloc (sizeof (T) * (N))) | |
316 | #define XCNEWVEC(T, N) ((T *) xcalloc ((N), sizeof (T))) | |
b1e8c0fd GDR |
317 | #define XRESIZEVEC(T, P, N) ((T *) xrealloc ((void *) (P), sizeof (T) * (N))) |
318 | #define XDELETEVEC(P) free ((void*) (P)) | |
b50a5a95 BI |
319 | |
320 | /* Allocators for variable-sized structures and raw buffers. */ | |
321 | ||
322 | #define XNEWVAR(T, S) ((T *) xmalloc ((S))) | |
323 | #define XCNEWVAR(T, S) ((T *) xcalloc (1, (S))) | |
324 | #define XRESIZEVAR(T, P, S) ((T *) xrealloc ((P), (S))) | |
325 | ||
326 | /* Type-safe obstack allocator. */ | |
327 | ||
328 | #define XOBNEW(O, T) ((T *) obstack_alloc ((O), sizeof (T))) | |
329 | ||
330 | ||
6599da04 JM |
331 | /* hex character manipulation routines */ |
332 | ||
333 | #define _hex_array_size 256 | |
334 | #define _hex_bad 99 | |
49a19cfd | 335 | extern const unsigned char _hex_value[_hex_array_size]; |
9486db4f | 336 | extern void hex_init (void); |
6599da04 JM |
337 | #define hex_p(c) (hex_value (c) != _hex_bad) |
338 | /* If you change this, note well: Some code relies on side effects in | |
339 | the argument being performed exactly once. */ | |
49a19cfd | 340 | #define hex_value(c) ((unsigned int) _hex_value[(unsigned char) (c)]) |
6599da04 | 341 | |
a584cf65 ILT |
342 | /* Flags for pex_init. These are bits to be or'ed together. */ |
343 | ||
344 | /* Record subprocess times, if possible. */ | |
345 | #define PEX_RECORD_TIMES 0x1 | |
346 | ||
347 | /* Use pipes for communication between processes, if possible. */ | |
348 | #define PEX_USE_PIPES 0x2 | |
349 | ||
350 | /* Save files used for communication between processes. */ | |
351 | #define PEX_SAVE_TEMPS 0x4 | |
352 | ||
353 | /* Prepare to execute one or more programs, with standard output of | |
354 | each program fed to standard input of the next. | |
355 | FLAGS As above. | |
356 | PNAME The name of the program to report in error messages. | |
357 | TEMPBASE A base name to use for temporary files; may be NULL to | |
358 | use a random name. | |
359 | Returns NULL on error. */ | |
360 | ||
361 | extern struct pex_obj *pex_init (int flags, const char *pname, | |
362 | const char *tempbase); | |
363 | ||
364 | /* Flags for pex_run. These are bits to be or'ed together. */ | |
365 | ||
366 | /* Last program in pipeline. Standard output of program goes to | |
367 | OUTNAME, or, if OUTNAME is NULL, to standard output of caller. Do | |
368 | not set this if you want to call pex_read_output. After this is | |
369 | set, pex_run may no longer be called with the same struct | |
370 | pex_obj. */ | |
371 | #define PEX_LAST 0x1 | |
372 | ||
373 | /* Search for program in executable search path. */ | |
374 | #define PEX_SEARCH 0x2 | |
375 | ||
376 | /* OUTNAME is a suffix. */ | |
377 | #define PEX_SUFFIX 0x4 | |
378 | ||
379 | /* Send program's standard error to standard output. */ | |
380 | #define PEX_STDERR_TO_STDOUT 0x8 | |
381 | ||
382 | /* Input file should be opened in binary mode. This flag is ignored | |
383 | on Unix. */ | |
384 | #define PEX_BINARY_INPUT 0x10 | |
385 | ||
386 | /* Output file should be opened in binary mode. This flag is ignored | |
387 | on Unix. For proper behaviour PEX_BINARY_INPUT and | |
388 | PEX_BINARY_OUTPUT have to match appropriately--i.e., a call using | |
389 | PEX_BINARY_OUTPUT should be followed by a call using | |
390 | PEX_BINARY_INPUT. */ | |
391 | #define PEX_BINARY_OUTPUT 0x20 | |
392 | ||
393 | /* Execute one program. Returns NULL on success. On error returns an | |
394 | error string (typically just the name of a system call); the error | |
395 | string is statically allocated. | |
396 | ||
397 | OBJ Returned by pex_init. | |
398 | ||
399 | FLAGS As above. | |
400 | ||
401 | EXECUTABLE The program to execute. | |
402 | ||
403 | ARGV NULL terminated array of arguments to pass to the program. | |
404 | ||
405 | OUTNAME Sets the output file name as follows: | |
406 | ||
407 | PEX_SUFFIX set (OUTNAME may not be NULL): | |
408 | TEMPBASE parameter to pex_init not NULL: | |
409 | Output file name is the concatenation of TEMPBASE | |
410 | and OUTNAME. | |
411 | TEMPBASE is NULL: | |
412 | Output file name is a random file name ending in | |
413 | OUTNAME. | |
414 | PEX_SUFFIX not set: | |
415 | OUTNAME not NULL: | |
416 | Output file name is OUTNAME. | |
417 | OUTNAME NULL, TEMPBASE not NULL: | |
418 | Output file name is randomly chosen using | |
419 | TEMPBASE. | |
420 | OUTNAME NULL, TEMPBASE NULL: | |
421 | Output file name is randomly chosen. | |
422 | ||
423 | If PEX_LAST is not set, the output file name is the | |
424 | name to use for a temporary file holding stdout, if | |
425 | any (there will not be a file if PEX_USE_PIPES is set | |
426 | and the system supports pipes). If a file is used, it | |
427 | will be removed when no longer needed unless | |
428 | PEX_SAVE_TEMPS is set. | |
429 | ||
430 | If PEX_LAST is set, and OUTNAME is not NULL, standard | |
431 | output is written to the output file name. The file | |
432 | will not be removed. If PEX_LAST and PEX_SUFFIX are | |
433 | both set, TEMPBASE may not be NULL. | |
434 | ||
435 | ERRNAME If not NULL, this is the name of a file to which | |
436 | standard error is written. If NULL, standard error of | |
437 | the program is standard error of the caller. | |
438 | ||
439 | ERR On an error return, *ERR is set to an errno value, or | |
440 | to 0 if there is no relevant errno. | |
441 | */ | |
442 | ||
443 | extern const char *pex_run (struct pex_obj *obj, int flags, | |
444 | const char *executable, char * const *argv, | |
445 | const char *outname, const char *errname, | |
446 | int *err); | |
447 | ||
448 | /* Read the standard output of the last program to be executed. | |
449 | pex_run can not be called after this. BINARY should be non-zero if | |
450 | the file should be opened in binary mode; this is ignored on Unix. | |
451 | Returns NULL on error. Don't call fclose on the returned FILE; it | |
452 | will be closed by pex_free. */ | |
453 | ||
454 | extern FILE *pex_read_output (struct pex_obj *, int binary); | |
455 | ||
456 | /* Return exit status of all programs in VECTOR. COUNT indicates the | |
457 | size of VECTOR. The status codes in the vector are in the order of | |
458 | the calls to pex_run. Returns 0 on error, 1 on success. */ | |
459 | ||
460 | extern int pex_get_status (struct pex_obj *, int count, int *vector); | |
461 | ||
462 | /* Return times of all programs in VECTOR. COUNT indicates the size | |
463 | of VECTOR. struct pex_time is really just struct timeval, but that | |
464 | is not portable to all systems. Returns 0 on error, 1 on | |
465 | success. */ | |
466 | ||
467 | struct pex_time | |
468 | { | |
469 | unsigned long user_seconds; | |
470 | unsigned long user_microseconds; | |
471 | unsigned long system_seconds; | |
472 | unsigned long system_microseconds; | |
473 | }; | |
474 | ||
475 | extern int pex_get_times (struct pex_obj *, int count, | |
476 | struct pex_time *vector); | |
477 | ||
478 | /* Clean up a pex_obj. */ | |
479 | ||
0fd20f36 | 480 | extern void pex_free (struct pex_obj *); |
a584cf65 ILT |
481 | |
482 | /* Just execute one program. Return value is as for pex_run. | |
483 | FLAGS Combination of PEX_SEARCH and PEX_STDERR_TO_STDOUT. | |
484 | EXECUTABLE As for pex_run. | |
485 | ARGV As for pex_run. | |
486 | PNAME As for pex_init. | |
487 | OUTNAME As for pex_run when PEX_LAST is set. | |
488 | ERRNAME As for pex_run. | |
489 | STATUS Set to exit status on success. | |
490 | ERR As for pex_run. | |
491 | */ | |
492 | ||
493 | extern const char *pex_one (int flags, const char *executable, | |
494 | char * const *argv, const char *pname, | |
495 | const char *outname, const char *errname, | |
496 | int *status, int *err); | |
497 | ||
498 | /* pexecute and pwait are the old pexecute interface, still here for | |
499 | backward compatibility. Don't use these for new code. Instead, | |
500 | use pex_init/pex_run/pex_get_status/pex_free, or pex_one. */ | |
501 | ||
6599da04 JM |
502 | /* Definitions used by the pexecute routine. */ |
503 | ||
504 | #define PEXECUTE_FIRST 1 | |
505 | #define PEXECUTE_LAST 2 | |
506 | #define PEXECUTE_ONE (PEXECUTE_FIRST + PEXECUTE_LAST) | |
507 | #define PEXECUTE_SEARCH 4 | |
508 | #define PEXECUTE_VERBOSE 8 | |
509 | ||
510 | /* Execute a program. */ | |
511 | ||
9486db4f GDR |
512 | extern int pexecute (const char *, char * const *, const char *, |
513 | const char *, char **, char **, int); | |
6599da04 JM |
514 | |
515 | /* Wait for pexecute to finish. */ | |
516 | ||
9486db4f | 517 | extern int pwait (int, int *, int); |
6599da04 | 518 | |
e2bb0cb4 | 519 | #if !HAVE_DECL_ASPRINTF |
146e60a0 KG |
520 | /* Like sprintf but provides a pointer to malloc'd storage, which must |
521 | be freed by the caller. */ | |
522 | ||
9486db4f | 523 | extern int asprintf (char **, const char *, ...) ATTRIBUTE_PRINTF_2; |
e2bb0cb4 | 524 | #endif |
146e60a0 | 525 | |
e2bb0cb4 | 526 | #if !HAVE_DECL_VASPRINTF |
146e60a0 KG |
527 | /* Like vsprintf but provides a pointer to malloc'd storage, which |
528 | must be freed by the caller. */ | |
529 | ||
9486db4f | 530 | extern int vasprintf (char **, const char *, va_list) |
146e60a0 | 531 | ATTRIBUTE_PRINTF(2,0); |
e2bb0cb4 | 532 | #endif |
146e60a0 | 533 | |
ddcf783b EZ |
534 | #if defined(HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF |
535 | /* Like sprintf but prints at most N characters. */ | |
536 | extern int snprintf (char *, size_t, const char *, ...) ATTRIBUTE_PRINTF_3; | |
537 | #endif | |
538 | ||
539 | #if defined(HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF | |
540 | /* Like vsprintf but prints at most N characters. */ | |
541 | extern int vsnprintf (char *, size_t, const char *, va_list); | |
542 | #endif | |
543 | ||
672a59e0 GM |
544 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) |
545 | ||
b548dffb ZW |
546 | /* Drastically simplified alloca configurator. If we're using GCC, |
547 | we use __builtin_alloca; otherwise we use the C alloca. The C | |
548 | alloca is always available. You can override GCC by defining | |
cc56c744 KG |
549 | USE_C_ALLOCA yourself. The canonical autoconf macro C_ALLOCA is |
550 | also set/unset as it is often used to indicate whether code needs | |
551 | to call alloca(0). */ | |
8766be86 | 552 | extern void *C_alloca (size_t) ATTRIBUTE_MALLOC; |
b548dffb ZW |
553 | #undef alloca |
554 | #if GCC_VERSION >= 2000 && !defined USE_C_ALLOCA | |
555 | # define alloca(x) __builtin_alloca(x) | |
cc56c744 | 556 | # undef C_ALLOCA |
c1d49704 KG |
557 | # define ASTRDUP(X) \ |
558 | (__extension__ ({ const char *const libiberty_optr = (X); \ | |
559 | const unsigned long libiberty_len = strlen (libiberty_optr) + 1; \ | |
5557e16d | 560 | char *const libiberty_nptr = (char *const) alloca (libiberty_len); \ |
c1d49704 | 561 | (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len); })) |
b548dffb ZW |
562 | #else |
563 | # define alloca(x) C_alloca(x) | |
564 | # undef USE_C_ALLOCA | |
565 | # define USE_C_ALLOCA 1 | |
cc56c744 KG |
566 | # undef C_ALLOCA |
567 | # define C_ALLOCA 1 | |
c1d49704 KG |
568 | extern const char *libiberty_optr; |
569 | extern char *libiberty_nptr; | |
570 | extern unsigned long libiberty_len; | |
571 | # define ASTRDUP(X) \ | |
572 | (libiberty_optr = (X), \ | |
573 | libiberty_len = strlen (libiberty_optr) + 1, \ | |
5557e16d | 574 | libiberty_nptr = (char *) alloca (libiberty_len), \ |
c1d49704 | 575 | (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len)) |
b548dffb ZW |
576 | #endif |
577 | ||
5a4917e5 JL |
578 | #ifdef __cplusplus |
579 | } | |
580 | #endif | |
581 | ||
582 | ||
6599da04 | 583 | #endif /* ! defined (LIBIBERTY_H) */ |