8177710: Convert TestMetaspaceUtils_test to GTest

Reviewed-by: tschatzl

src/hotspot/share/utilities/internalVMTests.cpp

@@ -43,7 +43,6 @@ void InternalVMTests::run_test(const char* name, void (*test)()) {
 void InternalVMTests::run() {
   tty->print_cr("Running internal VM tests");
   run_unit_test(TestReserveMemorySpecial_test);
-  run_unit_test(TestMetaspaceUtils_test);
   tty->print_cr("All internal VM tests passed");
 }
 

test/hotspot/gtest/memory/test_metaspace.cpp

@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#include "precompiled.hpp"
+#include "memory/metaspace.hpp"
+#include "memory/metaspace/virtualSpaceList.hpp"
+#include "unittest.hpp"
+
+using namespace metaspace;
+
+TEST_VM(MetaspaceUtils, reserved) {
+  size_t reserved = MetaspaceUtils::reserved_bytes();
+  EXPECT_GT(reserved, 0UL);
+
+  size_t reserved_metadata = MetaspaceUtils::reserved_bytes(Metaspace::NonClassType);
+  EXPECT_GT(reserved_metadata, 0UL);
+  EXPECT_LE(reserved_metadata, reserved);
+}
+
+TEST_VM(MetaspaceUtils, reserved_compressed_class_pointers) {
+  if (!UseCompressedClassPointers) {
+    return;
+  }
+  size_t reserved = MetaspaceUtils::reserved_bytes();
+  EXPECT_GT(reserved, 0UL);
+
+  size_t reserved_class = MetaspaceUtils::reserved_bytes(Metaspace::ClassType);
+  EXPECT_GT(reserved_class, 0UL);
+  EXPECT_LE(reserved_class, reserved);
+}
+
+TEST_VM(MetaspaceUtils, committed) {
+  size_t committed = MetaspaceUtils::committed_bytes();
+  EXPECT_GT(committed, 0UL);
+
+  size_t reserved  = MetaspaceUtils::reserved_bytes();
+  EXPECT_LE(committed, reserved);
+
+  size_t committed_metadata = MetaspaceUtils::committed_bytes(Metaspace::NonClassType);
+  EXPECT_GT(committed_metadata, 0UL);
+  EXPECT_LE(committed_metadata, committed);
+}
+
+TEST_VM(MetaspaceUtils, committed_compressed_class_pointers) {
+  if (!UseCompressedClassPointers) {
+    return;
+  }
+  size_t committed = MetaspaceUtils::committed_bytes();
+  EXPECT_GT(committed, 0UL);
+
+  size_t committed_class = MetaspaceUtils::committed_bytes(Metaspace::ClassType);
+  EXPECT_GT(committed_class, 0UL);
+  EXPECT_LE(committed_class, committed);
+}
+
+TEST_VM(MetaspaceUtils, virtual_space_list_large_chunk) {
+  VirtualSpaceList* vs_list = new VirtualSpaceList(os::vm_allocation_granularity());
+  MutexLockerEx cl(MetaspaceExpand_lock, Mutex::_no_safepoint_check_flag);
+  // A size larger than VirtualSpaceSize (256k) and add one page to make it _not_ be
+  // vm_allocation_granularity aligned on Windows.
+  size_t large_size = (size_t)(2*256*K + (os::vm_page_size() / BytesPerWord));
+  large_size += (os::vm_page_size() / BytesPerWord);
+  vs_list->get_new_chunk(large_size, 0);
+}