| /* |
| * Copyright (c) 2016, 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/allocation.inline.hpp" |
| #include "memory/metaspace.hpp" |
| #include "memory/metaspace/virtualSpaceList.hpp" |
| #include "runtime/mutex.hpp" |
| #include "runtime/mutexLocker.hpp" |
| #include "runtime/os.hpp" |
| #include "unittest.hpp" |
| |
| using namespace metaspace; |
| |
| |
| // Test the cheerful multitude of metaspace-contains-functions. |
| class MetaspaceIsMetaspaceObjTest : public ::testing::Test { |
| Mutex* _lock; |
| ClassLoaderMetaspace* _ms; |
| |
| public: |
| |
| MetaspaceIsMetaspaceObjTest() : _lock(NULL), _ms(NULL) {} |
| |
| virtual void SetUp() { |
| } |
| |
| virtual void TearDown() { |
| delete _ms; |
| delete _lock; |
| } |
| |
| void do_test(Metaspace::MetadataType mdType) { |
| _lock = new Mutex(Monitor::native, "gtest-IsMetaspaceObjTest-lock", false, Monitor::_safepoint_check_never); |
| { |
| MutexLockerEx ml(_lock, Mutex::_no_safepoint_check_flag); |
| _ms = new ClassLoaderMetaspace(_lock, Metaspace::StandardMetaspaceType); |
| } |
| |
| const MetaspaceObj* p = (MetaspaceObj*) _ms->allocate(42, mdType); |
| |
| // Test MetaspaceObj::is_metaspace_object |
| ASSERT_TRUE(MetaspaceObj::is_valid(p)); |
| |
| // A misaligned object shall not be recognized |
| const MetaspaceObj* p_misaligned = (MetaspaceObj*)((address)p) + 1; |
| ASSERT_FALSE(MetaspaceObj::is_valid(p_misaligned)); |
| |
| // Test VirtualSpaceList::contains and find_enclosing_space |
| VirtualSpaceList* list = Metaspace::space_list(); |
| if (mdType == Metaspace::ClassType && Metaspace::using_class_space()) { |
| list = Metaspace::class_space_list(); |
| } |
| ASSERT_TRUE(list->contains(p)); |
| VirtualSpaceNode* const n = list->find_enclosing_space(p); |
| ASSERT_TRUE(n != NULL); |
| ASSERT_TRUE(n->contains(p)); |
| |
| // A misaligned pointer shall be recognized by list::contains |
| ASSERT_TRUE(list->contains((address)p) + 1); |
| |
| // Now for some bogus values |
| ASSERT_FALSE(MetaspaceObj::is_valid((MetaspaceObj*)NULL)); |
| |
| // Should exercise various paths in MetaspaceObj::is_valid() |
| ASSERT_FALSE(MetaspaceObj::is_valid((MetaspaceObj*)1024)); |
| ASSERT_FALSE(MetaspaceObj::is_valid((MetaspaceObj*)8192)); |
| |
| MetaspaceObj* p_stack = (MetaspaceObj*) &_lock; |
| ASSERT_FALSE(MetaspaceObj::is_valid(p_stack)); |
| |
| MetaspaceObj* p_heap = (MetaspaceObj*) os::malloc(41, mtInternal); |
| ASSERT_FALSE(MetaspaceObj::is_valid(p_heap)); |
| os::free(p_heap); |
| |
| // Test Metaspace::contains_xxx |
| ASSERT_TRUE(Metaspace::contains(p)); |
| ASSERT_TRUE(Metaspace::contains_non_shared(p)); |
| |
| delete _ms; |
| _ms = NULL; |
| delete _lock; |
| _lock = NULL; |
| } |
| |
| }; |
| |
| TEST_VM_F(MetaspaceIsMetaspaceObjTest, non_class_space) { |
| do_test(Metaspace::NonClassType); |
| } |
| |
| TEST_VM_F(MetaspaceIsMetaspaceObjTest, class_space) { |
| do_test(Metaspace::ClassType); |
| } |
| |