1 files changed, 27 insertions, 0 deletions
diff --git a/ipc/ipc_counters.cc b/ipc/ipc_counters.cc
new file mode 100644
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--- /dev/null
+++ b/ipc/ipc_counters.cc
@@ -0,0 +1,27 @@
+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ipc/ipc_counters.h"
+
+#include "base/stats_counters.h"
+
+namespace IPC {
+
+// Note: We use the construct-on-first-use pattern here, because we don't
+//       want to fight with any static initializer ordering problems later.
+//       The downside of this is that the objects don't ever get cleaned up.
+//       But they are small and this is okay.
+
+// Note: Because these are constructed on-first-use, there is a slight
+//       race condition - two threads could initialize the same counter.
+//       If this happened, the stats table would still work just fine;
+//       we'd leak the extraneous StatsCounter object once, and that
+//       would be it.  But these are small objects, so this is ok.
+
+StatsCounter& Counters::ipc_send_counter() {
+  static StatsCounter* ctr = new StatsCounter("IPC.SendMsgCount");
+  return *ctr;
+}
+
+}  // namespace IPC