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2003-05-04  H.J. Lu  <hongjiu.lu@intel.com>

	* malloc/arena.c (arena_get2): Add atomic_write_barrier.
	* malloc/thread-m.h: Include <atomic.h>.
	(atomic_full_barrier): Provide default.
	(atomic_read_barrier): Likewise.
	(atomic_write_barrier): Likewise.
	* sysdeps/ia64/bits/atomic.h (atomic_full_barrier): New #define.
This commit is contained in:
Ulrich Drepper
2003-07-01 08:31:38 +00:00
parent 96c814d3d8
commit b5d5b67be3
4 changed files with 26 additions and 1 deletions
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3
malloc/arena.c
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@@ -1,5 +1,5 @@
/* Malloc implementation for multiple threads without lock contention.
Copyright (C) 2001, 2002 Free Software Foundation, Inc.
Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Wolfram Gloger <wg@malloc.de>, 2001.
@@ -758,6 +758,7 @@ arena_get2(a_tsd, size) mstate a_tsd; size_t size;
/* Add the new arena to the global list. */
(void)mutex_lock(&list_lock);
a->next = main_arena.next;
atomic_write_barrier ();
main_arena.next = a;
(void)mutex_unlock(&list_lock);