1 /* Copyright (C) 2008, 2009, 2011, 2012 Free Software Foundation, Inc.
2 Contributed by Richard Henderson <rth@redhat.com>.
4 This file is part of the GNU Transactional Memory Library (libitm).
6 Libitm is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 Libitm is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
13 FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 Under Section 7 of GPL version 3, you are granted additional
17 permissions described in the GCC Runtime Library Exception, version
18 3.1, as published by the Free Software Foundation.
20 You should have received a copy of the GNU General Public License and
21 a copy of the GCC Runtime Library Exception along with this program;
22 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 <http://www.gnu.org/licenses/>. */
27 namespace GTM HIDDEN {
31 gtm_undolog::rollback (size_t until_size)
33 size_t i, n = undolog.size();
37 for (i = n; i-- > until_size; )
39 void *ptr = (void *) undolog[i--];
40 size_t len = undolog[i];
41 size_t words = (len + sizeof(gtm_word) - 1) / sizeof(gtm_word);
43 __builtin_memcpy (ptr, &undolog[i], len);
49 GTM_LB (const void *ptr, size_t len)
51 gtm_thread *tx = gtm_thr();
52 tx->undolog.log(ptr, len);
59 /* ??? Use configure to determine if aliases are supported. Or convince
60 the compiler to not just tail call this, but actually generate the
61 same_body_alias itself. */
63 _ITM_LB (const void *ptr, size_t len)
68 #define ITM_LOG_DEF(T) \
69 void ITM_REGPARM _ITM_L##T (const _ITM_TYPE_##T *ptr) \
70 { GTM_LB (ptr, sizeof (*ptr)); }