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Diffstat (limited to 'elf/dl-close.c')
-rw-r--r--elf/dl-close.c74
1 files changed, 35 insertions, 39 deletions
diff --git a/elf/dl-close.c b/elf/dl-close.c
index 31bc80b935..df968fe649 100644
--- a/elf/dl-close.c
+++ b/elf/dl-close.c
@@ -41,7 +41,6 @@ typedef void (*fini_t) (void);
#define IDX_STILL_USED -1
-#ifdef USE_TLS
/* Returns true we an non-empty was found. */
static bool
remove_slotinfo (size_t idx, struct dtv_slotinfo_list *listp, size_t disp,
@@ -103,26 +102,12 @@ remove_slotinfo (size_t idx, struct dtv_slotinfo_list *listp, size_t disp,
/* No non-entry in this list element. */
return false;
}
-#endif
void
-_dl_close (void *_map)
+_dl_close_worker (struct link_map *map)
{
- struct link_map *map = _map;
Lmid_t ns = map->l_ns;
- unsigned int i;
- /* First see whether we can remove the object at all. */
- if (__builtin_expect (map->l_flags_1 & DF_1_NODELETE, 0)
- && map->l_init_called)
- /* Nope. Do nothing. */
- return;
-
- if (__builtin_expect (map->l_direct_opencount, 1) == 0)
- GLRO(dl_signal_error) (0, map->l_name, NULL, N_("shared object not open"));
-
- /* Acquire the lock. */
- __rtld_lock_lock_recursive (GL(dl_load_lock));
/* One less direct use. */
--map->l_direct_opencount;
@@ -143,16 +128,13 @@ _dl_close (void *_map)
_dl_debug_printf ("\nclosing file=%s; direct_opencount=%u\n",
map->l_name, map->l_direct_opencount);
- __rtld_lock_unlock_recursive (GL(dl_load_lock));
return;
}
retry:
dl_close_state = pending;
-#ifdef USE_TLS
bool any_tls = false;
-#endif
const unsigned int nloaded = GL(dl_ns)[ns]._ns_nloaded;
char used[nloaded];
char done[nloaded];
@@ -246,7 +228,7 @@ _dl_close (void *_map)
#endif
bool unload_any = false;
unsigned int first_loaded = ~0;
- for (i = 0; i < nloaded; ++i)
+ for (unsigned int i = 0; i < nloaded; ++i)
{
struct link_map *imap = maps[i];
@@ -417,7 +399,7 @@ _dl_close (void *_map)
struct r_scope_elem **old = imap->l_scope;
- if (SINGLE_THREAD_P)
+ if (RTLD_SINGLE_THREAD_P)
imap->l_scope = newp;
else
{
@@ -474,15 +456,13 @@ _dl_close (void *_map)
r->r_state = RT_DELETE;
_dl_debug_state ();
-#ifdef USE_TLS
size_t tls_free_start;
size_t tls_free_end;
tls_free_start = tls_free_end = NO_TLS_OFFSET;
-#endif
/* Check each element of the search list to see if all references to
it are gone. */
- for (i = first_loaded; i < nloaded; ++i)
+ for (unsigned int i = first_loaded; i < nloaded; ++i)
{
struct link_map *imap = maps[i];
if (!used[i])
@@ -509,7 +489,6 @@ _dl_close (void *_map)
--GL(dl_ns)[ns]._ns_main_searchlist->r_nlist;
}
-#ifdef USE_TLS
/* Remove the object from the dtv slotinfo array if it uses TLS. */
if (__builtin_expect (imap->l_tls_blocksize > 0, 0))
{
@@ -528,7 +507,7 @@ _dl_close (void *_map)
this search list, going in either direction. When the
whole chunk is at the end of the used area then we can
reclaim it. */
-# if TLS_TCB_AT_TP
+#if TLS_TCB_AT_TP
if (tls_free_start == NO_TLS_OFFSET
|| (size_t) imap->l_tls_offset == tls_free_start)
{
@@ -568,7 +547,7 @@ _dl_close (void *_map)
= tls_free_end - imap->l_tls_blocksize;
}
}
-# elif TLS_DTV_AT_TP
+#elif TLS_DTV_AT_TP
if ((size_t) imap->l_tls_offset == tls_free_end)
/* Extend the contiguous chunk being reclaimed. */
tls_free_end -= imap->l_tls_blocksize;
@@ -585,12 +564,11 @@ _dl_close (void *_map)
tls_free_start = imap->l_tls_offset;
tls_free_end = tls_free_start + imap->l_tls_blocksize;
}
-# else
-# error "Either TLS_TCB_AT_TP or TLS_DTV_AT_TP must be defined"
-# endif
+#else
+# error "Either TLS_TCB_AT_TP or TLS_DTV_AT_TP must be defined"
+#endif
}
}
-#endif
/* We can unmap all the maps at once. We determined the
start address and length when we loaded the object and
@@ -656,7 +634,6 @@ _dl_close (void *_map)
}
}
-#ifdef USE_TLS
/* If we removed any object which uses TLS bump the generation counter. */
if (any_tls)
{
@@ -666,7 +643,6 @@ _dl_close (void *_map)
if (tls_free_end == GL(dl_tls_static_used))
GL(dl_tls_static_used) = tls_free_start;
}
-#endif
#ifdef SHARED
/* Auditing checkpoint: we have deleted all objects. */
@@ -698,11 +674,34 @@ _dl_close (void *_map)
goto retry;
dl_close_state = not_pending;
+}
+
+
+void
+_dl_close (void *_map)
+{
+ struct link_map *map = _map;
+
+ /* First see whether we can remove the object at all. */
+ if (__builtin_expect (map->l_flags_1 & DF_1_NODELETE, 0))
+ {
+ assert (map->l_init_called);
+ /* Nope. Do nothing. */
+ return;
+ }
+
+ if (__builtin_expect (map->l_direct_opencount, 1) == 0)
+ GLRO(dl_signal_error) (0, map->l_name, NULL, N_("shared object not open"));
+
+ /* Acquire the lock. */
+ __rtld_lock_lock_recursive (GL(dl_load_lock));
+
+ _dl_close_worker (map);
+
__rtld_lock_unlock_recursive (GL(dl_load_lock));
}
-#ifdef USE_TLS
static bool __libc_freeres_fn_section
free_slotinfo (struct dtv_slotinfo_list **elemp)
{
@@ -729,7 +728,6 @@ free_slotinfo (struct dtv_slotinfo_list **elemp)
return true;
}
-#endif
libc_freeres_fn (free_mem)
@@ -755,22 +753,20 @@ libc_freeres_fn (free_mem)
free (old);
}
-#ifdef USE_TLS
if (USE___THREAD || GL(dl_tls_dtv_slotinfo_list) != NULL)
{
/* Free the memory allocated for the dtv slotinfo array. We can do
this only if all modules which used this memory are unloaded. */
-# ifdef SHARED
+#ifdef SHARED
if (GL(dl_initial_dtv) == NULL)
/* There was no initial TLS setup, it was set up later when
it used the normal malloc. */
free_slotinfo (&GL(dl_tls_dtv_slotinfo_list));
else
-# endif
+#endif
/* The first element of the list does not have to be deallocated.
It was allocated in the dynamic linker (i.e., with a different
malloc), and in the static library it's in .bss space. */
free_slotinfo (&GL(dl_tls_dtv_slotinfo_list)->next);
}
-#endif
}
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