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252b5132 | 1 | /* Function declarations for libiberty. |
4f1d9bd8 | 2 | |
b109e79a | 3 | Copyright 2001, 2002, 2005 Free Software Foundation, Inc. |
4f1d9bd8 | 4 | |
526c3e12 NC |
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 | ||
4f1d9bd8 NC |
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 | |
24 | Foundation, Inc., 59 Temple Place - Suite 330, | |
25 | Boston, MA 02111-1307, USA. | |
26 | ||
252b5132 RH |
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 | ||
38 | #ifdef __cplusplus | |
39 | extern "C" { | |
40 | #endif | |
41 | ||
42 | #include "ansidecl.h" | |
43 | ||
b13291a9 DD |
44 | /* Get a definition for size_t. */ |
45 | #include <stddef.h> | |
46 | /* Get a definition for va_list. */ | |
47 | #include <stdarg.h> | |
b13291a9 | 48 | |
b109e79a ILT |
49 | #include <stdio.h> |
50 | ||
7b6f6286 DD |
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 | ||
ac119ae8 DD |
57 | /* Open and return a FILE pointer. If the OS supports it, ensure that |
58 | the stream is setup to avoid any multi-threaded locking. Otherwise | |
59 | return the FILE pointer unchanged. */ | |
60 | ||
ab70e2a5 DD |
61 | extern FILE *fopen_unlocked (const char *, const char *); |
62 | extern FILE *fdopen_unlocked (int, const char *); | |
63 | extern FILE *freopen_unlocked (const char *, const char *, FILE *); | |
ac119ae8 | 64 | |
252b5132 RH |
65 | /* Build an argument vector from a string. Allocates memory using |
66 | malloc. Use freeargv to free the vector. */ | |
67 | ||
9334f9c6 | 68 | extern char **buildargv (const char *) ATTRIBUTE_MALLOC; |
252b5132 RH |
69 | |
70 | /* Free a vector returned by buildargv. */ | |
71 | ||
9334f9c6 | 72 | extern void freeargv (char **); |
252b5132 RH |
73 | |
74 | /* Duplicate an argument vector. Allocates memory using malloc. Use | |
75 | freeargv to free the vector. */ | |
76 | ||
9334f9c6 | 77 | extern char **dupargv (char **) ATTRIBUTE_MALLOC; |
252b5132 RH |
78 | |
79 | ||
80 | /* Return the last component of a path name. Note that we can't use a | |
81 | prototype here because the parameter is declared inconsistently | |
82 | across different systems, sometimes as "char *" and sometimes as | |
83 | "const char *" */ | |
84 | ||
79c6de76 L |
85 | /* HAVE_DECL_* is a three-state macro: undefined, 0 or 1. If it is |
86 | undefined, we haven't run the autoconf check so provide the | |
87 | declaration without arguments. If it is 0, we checked and failed | |
88 | to find the declaration so provide a fully prototyped one. If it | |
89 | is 1, we found it so don't provide any declaration at all. */ | |
931f285f | 90 | #if !HAVE_DECL_BASENAME |
79fadcb0 | 91 | #if defined (__GNU_LIBRARY__ ) || defined (__linux__) || defined (__FreeBSD__) || defined (__OpenBSD__) || defined(__NetBSD__) || defined (__CYGWIN__) || defined (__CYGWIN32__) || defined (__MINGW32__) || defined (HAVE_DECL_BASENAME) |
9334f9c6 | 92 | extern char *basename (const char *); |
252b5132 RH |
93 | #else |
94 | extern char *basename (); | |
931f285f | 95 | #endif |
252b5132 RH |
96 | #endif |
97 | ||
8aa30e60 DD |
98 | /* A well-defined basename () that is always compiled in. */ |
99 | ||
9334f9c6 | 100 | extern const char *lbasename (const char *); |
8aa30e60 | 101 | |
e2803db9 DJ |
102 | /* A well-defined realpath () that is always compiled in. */ |
103 | ||
9334f9c6 | 104 | extern char *lrealpath (const char *); |
e2803db9 | 105 | |
38bfaea8 DD |
106 | /* Concatenate an arbitrary number of strings. You must pass NULL as |
107 | the last argument of this function, to terminate the list of | |
108 | strings. Allocates memory using xmalloc. */ | |
252b5132 | 109 | |
9334f9c6 | 110 | extern char *concat (const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_SENTINEL; |
252b5132 | 111 | |
99ee3a8f DD |
112 | /* Concatenate an arbitrary number of strings. You must pass NULL as |
113 | the last argument of this function, to terminate the list of | |
114 | strings. Allocates memory using xmalloc. The first argument is | |
115 | not one of the strings to be concatenated, but if not NULL is a | |
116 | pointer to be freed after the new string is created, similar to the | |
117 | way xrealloc works. */ | |
118 | ||
9334f9c6 | 119 | extern char *reconcat (char *, const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_SENTINEL; |
99ee3a8f | 120 | |
54c20242 | 121 | /* Determine the length of concatenating an arbitrary number of |
38bfaea8 DD |
122 | strings. You must pass NULL as the last argument of this function, |
123 | to terminate the list of strings. */ | |
54c20242 | 124 | |
9334f9c6 | 125 | extern unsigned long concat_length (const char *, ...) ATTRIBUTE_SENTINEL; |
54c20242 DD |
126 | |
127 | /* Concatenate an arbitrary number of strings into a SUPPLIED area of | |
38bfaea8 DD |
128 | memory. You must pass NULL as the last argument of this function, |
129 | to terminate the list of strings. The supplied memory is assumed | |
130 | to be large enough. */ | |
54c20242 | 131 | |
9334f9c6 | 132 | extern char *concat_copy (char *, const char *, ...) ATTRIBUTE_SENTINEL; |
54c20242 DD |
133 | |
134 | /* Concatenate an arbitrary number of strings into a GLOBAL area of | |
38bfaea8 DD |
135 | memory. You must pass NULL as the last argument of this function, |
136 | to terminate the list of strings. The supplied memory is assumed | |
137 | to be large enough. */ | |
54c20242 | 138 | |
9334f9c6 | 139 | extern char *concat_copy2 (const char *, ...) ATTRIBUTE_SENTINEL; |
54c20242 DD |
140 | |
141 | /* This is the global area used by concat_copy2. */ | |
142 | ||
143 | extern char *libiberty_concat_ptr; | |
144 | ||
38bfaea8 DD |
145 | /* Concatenate an arbitrary number of strings. You must pass NULL as |
146 | the last argument of this function, to terminate the list of | |
147 | strings. Allocates memory using alloca. The arguments are | |
148 | evaluated twice! */ | |
54c20242 DD |
149 | #define ACONCAT(ACONCAT_PARAMS) \ |
150 | (libiberty_concat_ptr = alloca (concat_length ACONCAT_PARAMS + 1), \ | |
151 | concat_copy2 ACONCAT_PARAMS) | |
152 | ||
252b5132 RH |
153 | /* Check whether two file descriptors refer to the same file. */ |
154 | ||
9334f9c6 | 155 | extern int fdmatch (int fd1, int fd2); |
252b5132 | 156 | |
3d0dfe26 MM |
157 | /* Return the position of the first bit set in the argument. */ |
158 | /* Prototypes vary from system to system, so we only provide a | |
159 | prototype on systems where we know that we need it. */ | |
160 | #if defined (HAVE_DECL_FFS) && !HAVE_DECL_FFS | |
161 | extern int ffs(int); | |
162 | #endif | |
163 | ||
cc89ffe6 ILT |
164 | /* Get the working directory. The result is cached, so don't call |
165 | chdir() between calls to getpwd(). */ | |
166 | ||
9334f9c6 | 167 | extern char * getpwd (void); |
cc89ffe6 | 168 | |
8ec32723 DD |
169 | /* Get the current time. */ |
170 | /* Prototypes vary from system to system, so we only provide a | |
171 | prototype on systems where we know that we need it. */ | |
172 | #ifdef __MINGW32__ | |
173 | /* Forward declaration to avoid #include <sys/time.h>. */ | |
174 | struct timeval; | |
9334f9c6 | 175 | extern int gettimeofday (struct timeval *, void *); |
8ec32723 DD |
176 | #endif |
177 | ||
252b5132 RH |
178 | /* Get the amount of time the process has run, in microseconds. */ |
179 | ||
9334f9c6 | 180 | extern long get_run_time (void); |
252b5132 | 181 | |
2a80c0a4 DD |
182 | /* Generate a relocated path to some installation directory. Allocates |
183 | return value using malloc. */ | |
184 | ||
9334f9c6 DD |
185 | extern char *make_relative_prefix (const char *, const char *, |
186 | const char *) ATTRIBUTE_MALLOC; | |
2a80c0a4 | 187 | |
252b5132 RH |
188 | /* Choose a temporary directory to use for scratch files. */ |
189 | ||
9334f9c6 | 190 | extern char *choose_temp_base (void) ATTRIBUTE_MALLOC; |
cc89ffe6 ILT |
191 | |
192 | /* Return a temporary file name or NULL if unable to create one. */ | |
193 | ||
9334f9c6 | 194 | extern char *make_temp_file (const char *) ATTRIBUTE_MALLOC; |
252b5132 | 195 | |
190eb137 DD |
196 | /* Remove a link to a file unless it is special. */ |
197 | ||
9334f9c6 | 198 | extern int unlink_if_ordinary (const char *); |
190eb137 | 199 | |
252b5132 RH |
200 | /* Allocate memory filled with spaces. Allocates using malloc. */ |
201 | ||
9334f9c6 | 202 | extern const char *spaces (int count); |
252b5132 RH |
203 | |
204 | /* Return the maximum error number for which strerror will return a | |
205 | string. */ | |
206 | ||
9334f9c6 | 207 | extern int errno_max (void); |
252b5132 RH |
208 | |
209 | /* Return the name of an errno value (e.g., strerrno (EINVAL) returns | |
210 | "EINVAL"). */ | |
211 | ||
9334f9c6 | 212 | extern const char *strerrno (int); |
252b5132 RH |
213 | |
214 | /* Given the name of an errno value, return the value. */ | |
215 | ||
9334f9c6 | 216 | extern int strtoerrno (const char *); |
252b5132 RH |
217 | |
218 | /* ANSI's strerror(), but more robust. */ | |
219 | ||
9334f9c6 | 220 | extern char *xstrerror (int); |
252b5132 RH |
221 | |
222 | /* Return the maximum signal number for which strsignal will return a | |
223 | string. */ | |
224 | ||
9334f9c6 | 225 | extern int signo_max (void); |
252b5132 RH |
226 | |
227 | /* Return a signal message string for a signal number | |
228 | (e.g., strsignal (SIGHUP) returns something like "Hangup"). */ | |
229 | /* This is commented out as it can conflict with one in system headers. | |
230 | We still document its existence though. */ | |
231 | ||
9334f9c6 | 232 | /*extern const char *strsignal (int);*/ |
252b5132 RH |
233 | |
234 | /* Return the name of a signal number (e.g., strsigno (SIGHUP) returns | |
235 | "SIGHUP"). */ | |
236 | ||
9334f9c6 | 237 | extern const char *strsigno (int); |
252b5132 RH |
238 | |
239 | /* Given the name of a signal, return its number. */ | |
240 | ||
9334f9c6 | 241 | extern int strtosigno (const char *); |
252b5132 RH |
242 | |
243 | /* Register a function to be run by xexit. Returns 0 on success. */ | |
244 | ||
9334f9c6 | 245 | extern int xatexit (void (*fn) (void)); |
252b5132 RH |
246 | |
247 | /* Exit, calling all the functions registered with xatexit. */ | |
248 | ||
9334f9c6 | 249 | extern void xexit (int status) ATTRIBUTE_NORETURN; |
252b5132 RH |
250 | |
251 | /* Set the program name used by xmalloc. */ | |
252 | ||
9334f9c6 | 253 | extern void xmalloc_set_program_name (const char *); |
252b5132 | 254 | |
b13291a9 | 255 | /* Report an allocation failure. */ |
9334f9c6 | 256 | extern void xmalloc_failed (size_t) ATTRIBUTE_NORETURN; |
b13291a9 | 257 | |
252b5132 RH |
258 | /* Allocate memory without fail. If malloc fails, this will print a |
259 | message to stderr (using the name set by xmalloc_set_program_name, | |
260 | if any) and then call xexit. */ | |
261 | ||
9334f9c6 | 262 | extern PTR xmalloc (size_t) ATTRIBUTE_MALLOC; |
252b5132 | 263 | |
cc89ffe6 ILT |
264 | /* Reallocate memory without fail. This works like xmalloc. Note, |
265 | realloc type functions are not suitable for attribute malloc since | |
266 | they may return the same address across multiple calls. */ | |
252b5132 | 267 | |
9334f9c6 | 268 | extern PTR xrealloc (PTR, size_t); |
252b5132 RH |
269 | |
270 | /* Allocate memory without fail and set it to zero. This works like | |
271 | xmalloc. */ | |
272 | ||
9334f9c6 | 273 | extern PTR xcalloc (size_t, size_t) ATTRIBUTE_MALLOC; |
252b5132 RH |
274 | |
275 | /* Copy a string into a memory buffer without fail. */ | |
276 | ||
9334f9c6 | 277 | extern char *xstrdup (const char *) ATTRIBUTE_MALLOC; |
cc89ffe6 | 278 | |
0fad4bdb DD |
279 | /* Copy at most N characters from string into a buffer without fail. */ |
280 | ||
9334f9c6 | 281 | extern char *xstrndup (const char *, size_t) ATTRIBUTE_MALLOC; |
0fad4bdb | 282 | |
cc89ffe6 ILT |
283 | /* Copy an existing memory buffer to a new memory buffer without fail. */ |
284 | ||
9334f9c6 | 285 | extern PTR xmemdup (const PTR, size_t, size_t) ATTRIBUTE_MALLOC; |
252b5132 | 286 | |
638ceb1a | 287 | /* Physical memory routines. Return values are in BYTES. */ |
9334f9c6 DD |
288 | extern double physmem_total (void); |
289 | extern double physmem_available (void); | |
4938384a | 290 | |
d5b4094f DD |
291 | |
292 | /* These macros provide a K&R/C89/C++-friendly way of allocating structures | |
293 | with nice encapsulation. The XDELETE*() macros are technically | |
294 | superfluous, but provided here for symmetry. Using them consistently | |
295 | makes it easier to update client code to use different allocators such | |
296 | as new/delete and new[]/delete[]. */ | |
297 | ||
298 | /* Scalar allocators. */ | |
299 | ||
300 | #define XNEW(T) ((T *) xmalloc (sizeof (T))) | |
301 | #define XCNEW(T) ((T *) xcalloc (1, sizeof (T))) | |
deaa6723 | 302 | #define XDELETE(P) free ((void*) (P)) |
d5b4094f DD |
303 | |
304 | /* Array allocators. */ | |
305 | ||
306 | #define XNEWVEC(T, N) ((T *) xmalloc (sizeof (T) * (N))) | |
307 | #define XCNEWVEC(T, N) ((T *) xcalloc ((N), sizeof (T))) | |
deaa6723 DD |
308 | #define XRESIZEVEC(T, P, N) ((T *) xrealloc ((void *) (P), sizeof (T) * (N))) |
309 | #define XDELETEVEC(P) free ((void*) (P)) | |
d5b4094f DD |
310 | |
311 | /* Allocators for variable-sized structures and raw buffers. */ | |
312 | ||
313 | #define XNEWVAR(T, S) ((T *) xmalloc ((S))) | |
314 | #define XCNEWVAR(T, S) ((T *) xcalloc (1, (S))) | |
315 | #define XRESIZEVAR(T, P, S) ((T *) xrealloc ((P), (S))) | |
316 | ||
317 | /* Type-safe obstack allocator. */ | |
318 | ||
319 | #define XOBNEW(O, T) ((T *) obstack_alloc ((O), sizeof (T))) | |
320 | ||
321 | ||
252b5132 RH |
322 | /* hex character manipulation routines */ |
323 | ||
324 | #define _hex_array_size 256 | |
325 | #define _hex_bad 99 | |
e4f79046 | 326 | extern const unsigned char _hex_value[_hex_array_size]; |
9334f9c6 | 327 | extern void hex_init (void); |
252b5132 RH |
328 | #define hex_p(c) (hex_value (c) != _hex_bad) |
329 | /* If you change this, note well: Some code relies on side effects in | |
330 | the argument being performed exactly once. */ | |
e4f79046 | 331 | #define hex_value(c) ((unsigned int) _hex_value[(unsigned char) (c)]) |
252b5132 | 332 | |
b109e79a ILT |
333 | /* Flags for pex_init. These are bits to be or'ed together. */ |
334 | ||
335 | /* Record subprocess times, if possible. */ | |
336 | #define PEX_RECORD_TIMES 0x1 | |
337 | ||
338 | /* Use pipes for communication between processes, if possible. */ | |
339 | #define PEX_USE_PIPES 0x2 | |
340 | ||
341 | /* Save files used for communication between processes. */ | |
342 | #define PEX_SAVE_TEMPS 0x4 | |
343 | ||
344 | /* Prepare to execute one or more programs, with standard output of | |
345 | each program fed to standard input of the next. | |
346 | FLAGS As above. | |
347 | PNAME The name of the program to report in error messages. | |
348 | TEMPBASE A base name to use for temporary files; may be NULL to | |
349 | use a random name. | |
350 | Returns NULL on error. */ | |
351 | ||
352 | extern struct pex_obj *pex_init (int flags, const char *pname, | |
353 | const char *tempbase); | |
354 | ||
355 | /* Flags for pex_run. These are bits to be or'ed together. */ | |
356 | ||
357 | /* Last program in pipeline. Standard output of program goes to | |
358 | OUTNAME, or, if OUTNAME is NULL, to standard output of caller. Do | |
359 | not set this if you want to call pex_read_output. After this is | |
360 | set, pex_run may no longer be called with the same struct | |
361 | pex_obj. */ | |
362 | #define PEX_LAST 0x1 | |
363 | ||
364 | /* Search for program in executable search path. */ | |
365 | #define PEX_SEARCH 0x2 | |
366 | ||
367 | /* OUTNAME is a suffix. */ | |
368 | #define PEX_SUFFIX 0x4 | |
369 | ||
370 | /* Send program's standard error to standard output. */ | |
371 | #define PEX_STDERR_TO_STDOUT 0x8 | |
372 | ||
373 | /* Input file should be opened in binary mode. This flag is ignored | |
374 | on Unix. */ | |
375 | #define PEX_BINARY_INPUT 0x10 | |
376 | ||
377 | /* Output file should be opened in binary mode. This flag is ignored | |
378 | on Unix. For proper behaviour PEX_BINARY_INPUT and | |
379 | PEX_BINARY_OUTPUT have to match appropriately--i.e., a call using | |
380 | PEX_BINARY_OUTPUT should be followed by a call using | |
381 | PEX_BINARY_INPUT. */ | |
382 | #define PEX_BINARY_OUTPUT 0x20 | |
383 | ||
384 | /* Execute one program. Returns NULL on success. On error returns an | |
385 | error string (typically just the name of a system call); the error | |
386 | string is statically allocated. | |
387 | ||
388 | OBJ Returned by pex_init. | |
389 | ||
390 | FLAGS As above. | |
391 | ||
392 | EXECUTABLE The program to execute. | |
393 | ||
394 | ARGV NULL terminated array of arguments to pass to the program. | |
395 | ||
396 | OUTNAME Sets the output file name as follows: | |
397 | ||
398 | PEX_SUFFIX set (OUTNAME may not be NULL): | |
399 | TEMPBASE parameter to pex_init not NULL: | |
400 | Output file name is the concatenation of TEMPBASE | |
401 | and OUTNAME. | |
402 | TEMPBASE is NULL: | |
403 | Output file name is a random file name ending in | |
404 | OUTNAME. | |
405 | PEX_SUFFIX not set: | |
406 | OUTNAME not NULL: | |
407 | Output file name is OUTNAME. | |
408 | OUTNAME NULL, TEMPBASE not NULL: | |
409 | Output file name is randomly chosen using | |
410 | TEMPBASE. | |
411 | OUTNAME NULL, TEMPBASE NULL: | |
412 | Output file name is randomly chosen. | |
413 | ||
414 | If PEX_LAST is not set, the output file name is the | |
415 | name to use for a temporary file holding stdout, if | |
416 | any (there will not be a file if PEX_USE_PIPES is set | |
417 | and the system supports pipes). If a file is used, it | |
418 | will be removed when no longer needed unless | |
419 | PEX_SAVE_TEMPS is set. | |
420 | ||
421 | If PEX_LAST is set, and OUTNAME is not NULL, standard | |
422 | output is written to the output file name. The file | |
423 | will not be removed. If PEX_LAST and PEX_SUFFIX are | |
424 | both set, TEMPBASE may not be NULL. | |
425 | ||
426 | ERRNAME If not NULL, this is the name of a file to which | |
427 | standard error is written. If NULL, standard error of | |
428 | the program is standard error of the caller. | |
429 | ||
430 | ERR On an error return, *ERR is set to an errno value, or | |
431 | to 0 if there is no relevant errno. | |
432 | */ | |
433 | ||
434 | extern const char *pex_run (struct pex_obj *obj, int flags, | |
435 | const char *executable, char * const *argv, | |
436 | const char *outname, const char *errname, | |
437 | int *err); | |
438 | ||
439 | /* Read the standard output of the last program to be executed. | |
440 | pex_run can not be called after this. BINARY should be non-zero if | |
441 | the file should be opened in binary mode; this is ignored on Unix. | |
442 | Returns NULL on error. Don't call fclose on the returned FILE; it | |
443 | will be closed by pex_free. */ | |
444 | ||
445 | extern FILE *pex_read_output (struct pex_obj *, int binary); | |
446 | ||
447 | /* Return exit status of all programs in VECTOR. COUNT indicates the | |
448 | size of VECTOR. The status codes in the vector are in the order of | |
449 | the calls to pex_run. Returns 0 on error, 1 on success. */ | |
450 | ||
451 | extern int pex_get_status (struct pex_obj *, int count, int *vector); | |
452 | ||
453 | /* Return times of all programs in VECTOR. COUNT indicates the size | |
454 | of VECTOR. struct pex_time is really just struct timeval, but that | |
455 | is not portable to all systems. Returns 0 on error, 1 on | |
456 | success. */ | |
457 | ||
458 | struct pex_time | |
459 | { | |
460 | unsigned long user_seconds; | |
461 | unsigned long user_microseconds; | |
462 | unsigned long system_seconds; | |
463 | unsigned long system_microseconds; | |
464 | }; | |
465 | ||
466 | extern int pex_get_times (struct pex_obj *, int count, | |
467 | struct pex_time *vector); | |
468 | ||
469 | /* Clean up a pex_obj. */ | |
470 | ||
7e10245c | 471 | extern void pex_free (struct pex_obj *); |
b109e79a ILT |
472 | |
473 | /* Just execute one program. Return value is as for pex_run. | |
474 | FLAGS Combination of PEX_SEARCH and PEX_STDERR_TO_STDOUT. | |
475 | EXECUTABLE As for pex_run. | |
476 | ARGV As for pex_run. | |
477 | PNAME As for pex_init. | |
478 | OUTNAME As for pex_run when PEX_LAST is set. | |
479 | ERRNAME As for pex_run. | |
480 | STATUS Set to exit status on success. | |
481 | ERR As for pex_run. | |
482 | */ | |
483 | ||
484 | extern const char *pex_one (int flags, const char *executable, | |
485 | char * const *argv, const char *pname, | |
486 | const char *outname, const char *errname, | |
487 | int *status, int *err); | |
488 | ||
489 | /* pexecute and pwait are the old pexecute interface, still here for | |
490 | backward compatibility. Don't use these for new code. Instead, | |
491 | use pex_init/pex_run/pex_get_status/pex_free, or pex_one. */ | |
492 | ||
252b5132 RH |
493 | /* Definitions used by the pexecute routine. */ |
494 | ||
495 | #define PEXECUTE_FIRST 1 | |
496 | #define PEXECUTE_LAST 2 | |
497 | #define PEXECUTE_ONE (PEXECUTE_FIRST + PEXECUTE_LAST) | |
498 | #define PEXECUTE_SEARCH 4 | |
499 | #define PEXECUTE_VERBOSE 8 | |
500 | ||
501 | /* Execute a program. */ | |
502 | ||
9334f9c6 DD |
503 | extern int pexecute (const char *, char * const *, const char *, |
504 | const char *, char **, char **, int); | |
252b5132 RH |
505 | |
506 | /* Wait for pexecute to finish. */ | |
507 | ||
9334f9c6 | 508 | extern int pwait (int, int *, int); |
252b5132 | 509 | |
bb7eb039 | 510 | #if !HAVE_DECL_ASPRINTF |
cc89ffe6 ILT |
511 | /* Like sprintf but provides a pointer to malloc'd storage, which must |
512 | be freed by the caller. */ | |
513 | ||
9334f9c6 | 514 | extern int asprintf (char **, const char *, ...) ATTRIBUTE_PRINTF_2; |
bb7eb039 | 515 | #endif |
cc89ffe6 | 516 | |
bb7eb039 | 517 | #if !HAVE_DECL_VASPRINTF |
cc89ffe6 ILT |
518 | /* Like vsprintf but provides a pointer to malloc'd storage, which |
519 | must be freed by the caller. */ | |
520 | ||
9334f9c6 | 521 | extern int vasprintf (char **, const char *, va_list) |
cc89ffe6 | 522 | ATTRIBUTE_PRINTF(2,0); |
bb7eb039 | 523 | #endif |
cc89ffe6 | 524 | |
b18903cb NC |
525 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) |
526 | ||
30673bf5 DD |
527 | /* Drastically simplified alloca configurator. If we're using GCC, |
528 | we use __builtin_alloca; otherwise we use the C alloca. The C | |
529 | alloca is always available. You can override GCC by defining | |
129e8d96 DD |
530 | USE_C_ALLOCA yourself. The canonical autoconf macro C_ALLOCA is |
531 | also set/unset as it is often used to indicate whether code needs | |
532 | to call alloca(0). */ | |
9334f9c6 | 533 | extern PTR C_alloca (size_t) ATTRIBUTE_MALLOC; |
30673bf5 DD |
534 | #undef alloca |
535 | #if GCC_VERSION >= 2000 && !defined USE_C_ALLOCA | |
536 | # define alloca(x) __builtin_alloca(x) | |
129e8d96 | 537 | # undef C_ALLOCA |
54c20242 DD |
538 | # define ASTRDUP(X) \ |
539 | (__extension__ ({ const char *const libiberty_optr = (X); \ | |
540 | const unsigned long libiberty_len = strlen (libiberty_optr) + 1; \ | |
7ab9a76e | 541 | char *const libiberty_nptr = (char *const) alloca (libiberty_len); \ |
54c20242 | 542 | (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len); })) |
30673bf5 DD |
543 | #else |
544 | # define alloca(x) C_alloca(x) | |
545 | # undef USE_C_ALLOCA | |
546 | # define USE_C_ALLOCA 1 | |
129e8d96 DD |
547 | # undef C_ALLOCA |
548 | # define C_ALLOCA 1 | |
54c20242 DD |
549 | extern const char *libiberty_optr; |
550 | extern char *libiberty_nptr; | |
551 | extern unsigned long libiberty_len; | |
552 | # define ASTRDUP(X) \ | |
553 | (libiberty_optr = (X), \ | |
554 | libiberty_len = strlen (libiberty_optr) + 1, \ | |
7ab9a76e | 555 | libiberty_nptr = (char *) alloca (libiberty_len), \ |
54c20242 | 556 | (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len)) |
30673bf5 DD |
557 | #endif |
558 | ||
252b5132 RH |
559 | #ifdef __cplusplus |
560 | } | |
561 | #endif | |
562 | ||
563 | ||
564 | #endif /* ! defined (LIBIBERTY_H) */ |