Merge from transactional-memory branch.

From-SVN: r181154

1 files changed, 72 insertions, 0 deletions

diff --git a/libitm/alloc_c.cc b/libitm/alloc_c.cc
new file mode 100644
index 00000000000..c0cf263a053
--- /dev/null
+++ b/libitm/alloc_c.cc
@@ -0,0 +1,72 @@
+/* Copyright (C) 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"
+
+
+using namespace GTM;
+
+extern "C" {
+
+/* Wrap: malloc (size_t sz)  */
+void *
+_ITM_malloc (size_t sz)
+{
+  void *r = malloc (sz);
+  if (r)
+    gtm_thr()->record_allocation (r, free);
+  return r;
+}
+
+/* Wrap: calloc (size_t nm, size_t sz)  */
+void *
+_ITM_calloc (size_t nm, size_t sz)
+{
+  void *r = calloc (nm, sz);
+  if (r)
+    gtm_thr()->record_allocation (r, free);
+  return r;
+}
+
+/* Wrap:  free (void *ptr)  */
+void
+_ITM_free (void *ptr)
+{
+  if (ptr)
+    gtm_thr()->forget_allocation (ptr, free);
+}
+
+/* Forget any internal references to PTR.  */
+
+__attribute__((transaction_pure))
+void ITM_REGPARM
+_ITM_dropReferences (void *ptr, size_t len)
+{
+  // The semantics of _ITM_dropReferences are not sufficiently defined in the
+  // ABI specification, so it does not make sense to support it right now. See
+  // the libitm documentation for details.
+  GTM_fatal("_ITM_dropReferences is not supported");
+}
+
+} // extern "C"