Merge from transactional-memory branch.

From-SVN: r181154

1 files changed, 81 insertions, 0 deletions

diff --git a/libitm/useraction.cc b/libitm/useraction.cc
new file mode 100644
index 00000000000..952bbd991b4
--- /dev/null
+++ b/libitm/useraction.cc
@@ -0,0 +1,81 @@
+/* Copyright (C) 2008, 2009, 2011 Free Software Foundation, Inc.
+   Contributed by Richard Henderson <rth@redhat.com>.
+
+   This file is part of the GNU Transactional Memory Library (libitm).
+
+   Libitm is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   Libitm is distributed in the hope that it will be useful, but WITHOUT ANY
+   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+   FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+   more details.
+
+   Under Section 7 of GPL version 3, you are granted additional
+   permissions described in the GCC Runtime Library Exception, version
+   3.1, as published by the Free Software Foundation.
+
+   You should have received a copy of the GNU General Public License and
+   a copy of the GCC Runtime Library Exception along with this program;
+   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "libitm_i.h"
+
+namespace GTM HIDDEN {
+
+void
+gtm_thread::rollback_user_actions(size_t until_size)
+{
+  for (size_t s = user_actions.size(); s > until_size; s--)
+    {
+      user_action *a = user_actions.pop();
+      if (!a->on_commit)
+	a->fn (a->arg);
+    }
+}
+
+
+void
+gtm_thread::commit_user_actions()
+{
+  for (vector<user_action>::iterator i = user_actions.begin(),
+      ie = user_actions.end(); i != ie; i++)
+    {
+      if (i->on_commit)
+	i->fn (i->arg);
+    }
+  user_actions.clear();
+}
+
+} // namespace GTM
+
+using namespace GTM;
+
+void ITM_REGPARM
+_ITM_addUserCommitAction(_ITM_userCommitFunction fn,
+			 _ITM_transactionId_t tid, void *arg)
+{
+  gtm_thread *tx = gtm_thr();
+  if (tid != _ITM_noTransactionId)
+    GTM_fatal("resumingTransactionId in _ITM_addUserCommitAction must be "
+	      "_ITM_noTransactionId");
+  gtm_thread::user_action *a = tx->user_actions.push();
+  a->fn = fn;
+  a->arg = arg;
+  a->on_commit = true;
+  a->resuming_id = tid;
+}
+
+
+void ITM_REGPARM
+_ITM_addUserUndoAction(_ITM_userUndoFunction fn, void * arg)
+{
+  gtm_thread *tx = gtm_thr();
+  gtm_thread::user_action *a = tx->user_actions.push();
+  a->fn = fn;
+  a->arg = arg;
+  a->on_commit = false;
+}