1 files changed, 74 insertions, 0 deletions
diff --git a/src/test/common/test_lockdep.cc b/src/test/common/test_lockdep.cc
new file mode 100644
index 000000000..0b47f780c
--- /dev/null
+++ b/src/test/common/test_lockdep.cc
@@ -0,0 +1,74 @@
+// -*- mode:C; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "gtest/gtest.h"
+
+#include "common/ceph_argparse.h"
+#include "common/ceph_context.h"
+#include "common/ceph_mutex.h"
+#include "common/common_init.h"
+#include "common/lockdep.h"
+#include "include/util.h"
+#include "include/coredumpctl.h"
+#include "log/Log.h"
+
+class lockdep : public ::testing::Test
+{
+protected:
+  void SetUp() override {
+#ifndef CEPH_DEBUG_MUTEX
+    GTEST_SKIP() << "WARNING: CEPH_DEBUG_MUTEX is not defined, lockdep will not work";
+#endif
+    CephInitParameters params(CEPH_ENTITY_TYPE_CLIENT);
+    cct = common_preinit(params, CODE_ENVIRONMENT_UTILITY,
+			 CINIT_FLAG_NO_DEFAULT_CONFIG_FILE);
+    cct->_conf->cluster = "ceph";
+    cct->_conf.set_val("lockdep", "true");
+    cct->_conf.apply_changes(nullptr);
+    ASSERT_TRUE(g_lockdep);
+  }
+  void TearDown() final
+  {
+    if (cct) {
+      cct->put();
+      cct = nullptr;
+    }
+  }
+protected:
+  CephContext *cct = nullptr;
+};
+
+TEST_F(lockdep, abba)
+{
+  ceph::mutex a(ceph::make_mutex("a")), b(ceph::make_mutex("b"));
+  a.lock();
+  ASSERT_TRUE(ceph_mutex_is_locked(a));
+  ASSERT_TRUE(ceph_mutex_is_locked_by_me(a));
+  b.lock();
+  ASSERT_TRUE(ceph_mutex_is_locked(b));
+  ASSERT_TRUE(ceph_mutex_is_locked_by_me(b));
+  a.unlock();
+  b.unlock();
+
+  b.lock();
+  PrCtl unset_dumpable;
+  EXPECT_DEATH(a.lock(), "");
+  b.unlock();
+}
+
+TEST_F(lockdep, recursive)
+{
+  ceph::mutex a(ceph::make_mutex("a"));
+  a.lock();
+  PrCtl unset_dumpable;
+  EXPECT_DEATH(a.lock(), "");
+  a.unlock();
+
+  ceph::recursive_mutex b(ceph::make_recursive_mutex("b"));
+  b.lock();
+  ASSERT_TRUE(ceph_mutex_is_locked(b));
+  ASSERT_TRUE(ceph_mutex_is_locked_by_me(b));
+  b.lock();
+  b.unlock();
+  b.unlock();
+}