1 files changed, 59 insertions, 0 deletions
diff --git a/src/common/mutex_debug.cc b/src/common/mutex_debug.cc
new file mode 100644
index 000000000..b832d211e
--- /dev/null
+++ b/src/common/mutex_debug.cc
@@ -0,0 +1,59 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ *
+ */
+
+#include "common/mutex_debug.h"
+#include "common/perf_counters.h"
+#include "common/ceph_context.h"
+#include "common/config.h"
+
+namespace ceph {
+namespace mutex_debug_detail {
+enum {
+  l_mutex_first = 999082,
+  l_mutex_wait,
+  l_mutex_last
+};
+
+mutex_debugging_base::mutex_debugging_base(std::string group, bool ld, bool bt)
+  : group(std::move(group)),
+    lockdep(ld),
+    backtrace(bt)
+{
+  if (_enable_lockdep()) {
+    _register();
+  }
+}
+
+mutex_debugging_base::~mutex_debugging_base() {
+  ceph_assert(nlock == 0);
+  if (_enable_lockdep()) {
+    lockdep_unregister(id);
+  }
+}
+
+void mutex_debugging_base::_register() {
+  id = lockdep_register(group.c_str());
+}
+void mutex_debugging_base::_will_lock(bool recursive) { // about to lock
+  id = lockdep_will_lock(group.c_str(), id, backtrace, recursive);
+}
+void mutex_debugging_base::_locked() {    // just locked
+  id = lockdep_locked(group.c_str(), id, backtrace);
+}
+void mutex_debugging_base::_will_unlock() {  // about to unlock
+  id = lockdep_will_unlock(group.c_str(), id);
+}
+
+} // namespace mutex_debug_detail
+} // namespace ceph