diff options
Diffstat (limited to 'gdb/gdb_bfd.c')
| -rw-r--r-- | gdb/gdb_bfd.c | 51 |
1 files changed, 50 insertions, 1 deletions
diff --git a/gdb/gdb_bfd.c b/gdb/gdb_bfd.c index 8471775..eb53766 100644 --- a/gdb/gdb_bfd.c +++ b/gdb/gdb_bfd.c @@ -122,6 +122,16 @@ show_bfd_sharing (struct ui_file *file, int from_tty, fprintf_filtered (file, _("BFD sharing is %s.\n"), value); } +/* When non-zero debugging of the bfd caches is enabled. */ + +static unsigned int debug_bfd_cache; +static void +show_bfd_cache_debug (struct ui_file *file, int from_tty, + struct cmd_list_element *c, const char *value) +{ + fprintf_filtered (file, _("BFD cache debugging is %s.\n"), value); +} + /* The type of an object being looked up in gdb_bfd_cache. We use htab's capability of storing one kind of object (BFD in this case) and using a different sort of object for searching. */ @@ -407,6 +417,11 @@ gdb_bfd_open (const char *name, const char *target, int fd) abfd = htab_find_with_hash (gdb_bfd_cache, &search, hash); if (bfd_sharing && abfd != NULL) { + if (debug_bfd_cache) + fprintf_unfiltered (gdb_stdlog, + "Reusing cached bfd %s for %s\n", + host_address_to_string (abfd), + bfd_get_filename (abfd)); close (fd); gdb_bfd_ref (abfd); return abfd; @@ -416,6 +431,12 @@ gdb_bfd_open (const char *name, const char *target, int fd) if (abfd == NULL) return NULL; + if (debug_bfd_cache) + fprintf_unfiltered (gdb_stdlog, + "Creating new bfd %s for %s\n", + host_address_to_string (abfd), + bfd_get_filename (abfd)); + if (bfd_sharing) { slot = htab_find_slot_with_hash (gdb_bfd_cache, &search, hash, INSERT); @@ -484,6 +505,12 @@ gdb_bfd_ref (struct bfd *abfd) gdata = bfd_usrdata (abfd); + if (debug_bfd_cache) + fprintf_unfiltered (gdb_stdlog, + "Increase reference count on bfd %s (%s)\n", + host_address_to_string (abfd), + bfd_get_filename (abfd)); + if (gdata != NULL) { gdata->refc += 1; @@ -537,7 +564,20 @@ gdb_bfd_unref (struct bfd *abfd) gdata->refc -= 1; if (gdata->refc > 0) - return; + { + if (debug_bfd_cache) + fprintf_unfiltered (gdb_stdlog, + "Decrease reference count on bfd %s (%s)\n", + host_address_to_string (abfd), + bfd_get_filename (abfd)); + return; + } + + if (debug_bfd_cache) + fprintf_unfiltered (gdb_stdlog, + "Delete final reference count on bfd %s (%s)\n", + host_address_to_string (abfd), + bfd_get_filename (abfd)); archive_bfd = gdata->archive_bfd; search.filename = bfd_get_filename (abfd); @@ -968,4 +1008,13 @@ filename, file size, file modification time, and file inode."), &show_bfd_sharing, &maintenance_set_cmdlist, &maintenance_show_cmdlist); + + add_setshow_zuinteger_cmd ("bfd-cache", class_maintenance, + &debug_bfd_cache, _("\ +Set bfd cache debugging."), _("\ +Show bfd cache debugging."), _("\ +When non-zero, bfd cache specific debugging is enabled."), + NULL, + &show_bfd_cache_debug, + &setdebuglist, &showdebuglist); } |