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* sysdeps/generic/ldsodefs.h (_dl_load_lock): Declare it here with

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__libc_lock_define_recursive.
	* elf/dl-open.c: Don't declare it here any more.
	* elf/dl-close.c: Likewise.
	* elf/dl-lookup.c: Likewise.
	* elf/dl-iteratephdr.c: Likewise.
	* elf/dl-lookup.c (add_dependency): Use __libc_lock_lock_recursive and
	__libc_lock_unlock_recursive.
	* elf/dl-close.c (_dl_close): Likewise
	* elf/dl-iteratephdr.c (__dl_iterate_phdr): Likewise
	* elf/dl-open.c (_dl_open): Likewise

	* sysdeps/generic/bits/libc-lock.h
	(__libc_lock_define_recursive): New macro.
	* sysdeps/generic/bits/stdio-lock.h (_IO_lock_t): Use it.
	(_IO_lock_lock): Use __libc_lock_lock_recursive.
	(_IO_lock_unlock): Use __libc_lock_unlock_recursive.
This commit is contained in:
Roland McGrath
2001-08-23 06:03:42 +00:00
parent 8179dcc108
commit c12aa80156
13 changed files with 91 additions and 72 deletions
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13
elf/dl-lookup.c
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@@ -61,15 +61,6 @@ struct sym_val
/* Statistics function. */
unsigned long int _dl_num_relocations;
/* During the program run we must not modify the global data of
loaded shared object simultanously in two threads. Therefore we
protect `_dl_open' and `_dl_close' in dl-close.c.
This must be a recursive lock since the initializer function of
the loaded object might as well require a call to this function.
At this time it is not anymore a problem to modify the tables. */
__libc_lock_define (extern, _dl_load_lock)
/* We have two different situations when looking up a simple: with or
without versioning. gcc is not able to optimize a single function
@@ -92,7 +83,7 @@ add_dependency (struct link_map *undef_map, struct link_map *map)
int result = 0;
/* Make sure nobody can unload the object while we are at it. */
__libc_lock_lock (_dl_load_lock);
__libc_lock_lock_recursive (_dl_load_lock);
/* Determine whether UNDEF_MAP already has a reference to MAP. First
look in the normal dependencies. */
@@ -174,7 +165,7 @@ add_dependency (struct link_map *undef_map, struct link_map *map)
}
/* Release the lock. */
__libc_lock_unlock (_dl_load_lock);
__libc_lock_unlock_recursive (_dl_load_lock);
return result;
}