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* elf/dl-close.c (_dl_close_worker): When removing object from

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global scope, wait for all lookups to finish afterwards.
	* elf/dl-open.c (add_to_global): When global scope array must
	grow, allocate a new one and free old array only after all
	lookups finish.
	* elf/dl-runtime.c (_dl_fixup): Protect using global scope.
	(_dl_lookup_symbol_x): Likewise.
	* elf/dl-support.c: Define _dl_wait_lookup_done.
	* sysdeps/generic/ldsodefs.h (struct rtld_global): Add
	_dl_wait_lookup_done.
This commit is contained in:
Ulrich Drepper
2007-05-19 07:08:23 +00:00
parent 2acd01acb1
commit df94b6412e
14 changed files with 204 additions and 37 deletions
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19
elf/dl-open.c
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@ -32,6 +32,7 @@
#include <bp-sym.h>
#include <caller.h>
#include <sysdep-cancel.h>
#include <tls.h>
#include <dl-dst.h>
@ -125,15 +126,25 @@ add_to_global (struct link_map *new)
{
/* We have to extend the existing array of link maps in the
main map. */
struct link_map **old_global
= GL(dl_ns)[new->l_ns]._ns_main_searchlist->r_list;
size_t new_nalloc = ((ns->_ns_global_scope_alloc + to_add) * 2);
new_global = (struct link_map **)
realloc (ns->_ns_main_searchlist->r_list,
((ns->_ns_global_scope_alloc + to_add + 8)
* sizeof (struct link_map *)));
malloc (new_nalloc * sizeof (struct link_map *));
if (new_global == NULL)
goto nomem;
ns->_ns_global_scope_alloc += to_add + 8;
memcpy (new_global, old_global,
ns->_ns_global_scope_alloc * sizeof (struct link_map *));
ns->_ns_global_scope_alloc = new_nalloc;
ns->_ns_main_searchlist->r_list = new_global;
if (!RTLD_SINGLE_THREAD_P)
THREAD_GSCOPE_WAIT ();
free (old_global);
}
/* Now add the new entries. */