* elf/dl-close.c (free_mem): Free _dl_scope_free_list.

2007-06-13  Jakub Jelinek  <jakub@redhat.com>

	* include/link.h: Don't include rtld-lowlevel.h.
	(struct link_map): Remove l_scope_lock.
	* sysdeps/generic/ldsodefs.h: Don't include rtld-lowlevel.h.
	(_dl_scope_free_list): New field (variable) in _rtld_global.
	(DL_LOOKUP_SCOPE_LOCK): Remove.
	(_dl_scope_free): New prototype.
	* elf/dl-runtime.c (_dl_fixup): Don't use __rtld_mrlock_*lock.
	Don't pass DL_LOOKUP_SCOPE_LOCK to _dl_lookup_symbol_x.
	(_dl_profile_fixup): Likewise.
	* elf/dl-sym.c (do_sym): Likewise.  Use wrapped _dl_lookup_symbol_x
	whenever !RTLD_SINGLE_THREAD_P, use THREAD_GSCOPE_SET_FLAG and
	THREAD_GSCOPE_RESET_FLAG around it.
	* elf/dl-close.c (_dl_close_worker): Don't use
	__rtld_mrlock_{change,done}.  Call _dl_scope_free on the old
	scope.  Make sure THREAD_GSCOPE_WAIT () happens if any old
	scopes were queued or if l_scope_mem has been abandoned.
	* elf/dl-open.c (_dl_scope_free): New function.
	(dl_open_worker): Use it.  Don't use __rtld_mrlock_{change,done}.
	* elf/dl-support.c (_dl_scope_free_list): New variable.
	* elf/dl-lookup.c (add_dependency): Remove flags argument.
	Remove DL_LOOKUP_SCOPE_LOCK handling.
	(_dl_lookup_symbol_x): Adjust caller.  Remove DL_LOOKUP_SCOPE_LOCK
	handling.
	* elf/dl-object.c (_dl_new_object): Don't use
	__rtld_mrlock_initialize.

2007-06-19  Ulrich Drepper  <drepper@redhat.com>

1 files changed, 12 insertions, 4 deletions

diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
index c910ed59c4..aefd105f0a 100644
--- a/sysdeps/generic/ldsodefs.h
+++ b/sysdeps/generic/ldsodefs.h
@@ -38,7 +38,6 @@
 #include <bits/libc-lock.h>
 #include <hp-timing.h>
 #include <tls.h>
-#include <rtld-lowlevel.h>
 
 __BEGIN_DECLS
 
@@ -488,6 +487,12 @@ struct rtld_global
 
   EXTERN void (*_dl_wait_lookup_done) (void);
 
+  /* Scopes to free after next THREAD_GSCOPE_WAIT ().  */
+  EXTERN struct dl_scope_free_list
+  {
+    size_t count;
+    struct r_scope_elem **list[50];
+  } *_dl_scope_free_list;
 #ifdef SHARED
 };
 # define __rtld_global_attribute__
@@ -840,9 +845,7 @@ enum
     DL_LOOKUP_ADD_DEPENDENCY = 1,
     /* Return most recent version instead of default version for
        unversioned lookup.  */
-    DL_LOOKUP_RETURN_NEWEST = 2,
-    /* Set if the scopr lock in the UNDEF_MAP is taken.  */
-    DL_LOOKUP_SCOPE_LOCK = 4
+    DL_LOOKUP_RETURN_NEWEST = 2
   };
 
 /* Lookup versioned symbol.  */
@@ -1050,6 +1053,11 @@ extern void *_dl_open (const char *name, int mode, const void *caller,
 		       Lmid_t nsid, int argc, char *argv[], char *env[])
      attribute_hidden;
 
+/* Free or queue for freeing scope OLD.  If other threads might be
+   in the middle of _dl_fixup, _dl_profile_fixup or dl*sym using the
+   old scope, OLD can't be freed until no thread is using it.  */
+extern int _dl_scope_free (struct r_scope_elem **old) attribute_hidden;
+
 /* Add module to slot information data.  */
 extern void _dl_add_to_slotinfo (struct link_map  *l) attribute_hidden;