gdb/bfd/cache.c

49 cache_btell (struct bfd *abfd)
51   return real_ftell (bfd_cache_lookup (abfd));
55 cache_bseek (struct bfd *abfd, file_ptr offset, int whence)
57   return real_fseek (bfd_cache_lookup (abfd), offset, whence);
68 cache_bread (struct bfd *abfd, void *buf, file_ptr nbytes)
86   nread = read (fileno (bfd_cache_lookup (abfd)), buf, nbytes);
96   nread = fread (buf, 1, nbytes, bfd_cache_lookup (abfd));
100   if (nread < nbytes && ferror (bfd_cache_lookup (abfd)))
110 cache_bwrite (struct bfd *abfd, const void *where, file_ptr nbytes)
112   file_ptr nwrite = fwrite (where, 1, nbytes, bfd_cache_lookup (abfd));
113   if (nwrite < nbytes && ferror (bfd_cache_lookup (abfd)))
122 cache_bclose (struct bfd *abfd)
124   return bfd_cache_close (abfd);
128 cache_bflush (struct bfd *abfd)
130   int sts = fflush (bfd_cache_lookup (abfd));
137 cache_bstat (struct bfd *abfd, struct stat *sb)
139   int sts = fstat (fileno (bfd_cache_lookup (abfd)), sb);
201 insert (bfd *abfd)
205       abfd->lru_next = abfd;
206       abfd->lru_prev = abfd;
210       abfd->lru_next = bfd_last_cache;
211       abfd->lru_prev = bfd_last_cache->lru_prev;
212       abfd->lru_prev->lru_next = abfd;
213       abfd->lru_next->lru_prev = abfd;
215   bfd_last_cache = abfd;
221 snip (bfd *abfd)
223   abfd->lru_prev->lru_next = abfd->lru_next;
224   abfd->lru_next->lru_prev = abfd->lru_prev;
225   if (abfd == bfd_last_cache)
227       bfd_last_cache = abfd->lru_next;
228       if (abfd == bfd_last_cache)
271 bfd_cache_delete (bfd *abfd)
275   if (fclose ((FILE *) abfd->iostream) == 0)
283   snip (abfd);
285   abfd->iostream = NULL;
296 	bfd_boolean bfd_cache_init (bfd *abfd);
303 bfd_cache_init (bfd *abfd)
305   BFD_ASSERT (abfd->iostream != NULL);
311   abfd->iovec = &cache_iovec;
312   insert (abfd);
322 	bfd_boolean bfd_cache_close (bfd *abfd);
325 	Remove the BFD @var{abfd} from the cache. If the attached file is open,
334 bfd_cache_close (bfd *abfd)
336   if (abfd->iovec != &cache_iovec)
339   if (abfd->iostream == NULL)
343   return bfd_cache_delete (abfd);
378 	FILE* bfd_open_file (bfd *abfd);
381 	Call the OS to open a file for @var{abfd}.  Return the <<FILE *>>
389 bfd_open_file (bfd *abfd)
391   abfd->cacheable = TRUE;	/* Allow it to be closed later.  */
399   switch (abfd->direction)
403       abfd->iostream = (PTR) fopen (abfd->filename, FOPEN_RB);
407       if (abfd->opened_once)
409 	  abfd->iostream = (PTR) fopen (abfd->filename, FOPEN_RUB);
410 	  if (abfd->iostream == NULL)
411 	    abfd->iostream = (PTR) fopen (abfd->filename, FOPEN_WUB);
438 	  if (stat (abfd->filename, &s) == 0 && s.st_size != 0)
439 	    unlink (abfd->filename);
441 	  abfd->iostream = (PTR) fopen (abfd->filename, FOPEN_WUB);
442 	  abfd->opened_once = TRUE;
447   if (abfd->iostream != NULL)
449       if (! bfd_cache_init (abfd))
453   return (FILE *) abfd->iostream;
461 	FILE *bfd_cache_lookup_worker (bfd *abfd);
465 	quick answer.  Find a file descriptor for @var{abfd}.  If
469 	returning NULL if it is unable to (re)open the @var{abfd}.
473 bfd_cache_lookup_worker (bfd *abfd)
475   if ((abfd->flags & BFD_IN_MEMORY) != 0)
478   if (abfd->my_archive)
479     abfd = abfd->my_archive;
481   if (abfd->iostream != NULL)
484       if (abfd != bfd_last_cache)
486 	  snip (abfd);
487 	  insert (abfd);
492       if (bfd_open_file (abfd) == NULL
493 	  || abfd->where != (unsigned long) abfd->where
494 	  || real_fseek ((FILE *) abfd->iostream, abfd->where, SEEK_SET) != 0)
498   return (FILE *) abfd->iostream;