113 lines
3.7 KiB
C++
113 lines
3.7 KiB
C++
/*
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* Copyright (c) 2020, 2024, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2020 SAP SE. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#include "precompiled.hpp"
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#include "memory/allocation.inline.hpp"
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#include "memory/classLoaderMetaspace.hpp"
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#include "memory/metaspace.hpp"
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#include "memory/metaspace/virtualSpaceList.hpp"
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#include "runtime/mutex.hpp"
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#include "runtime/mutexLocker.hpp"
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#include "runtime/os.hpp"
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#include "unittest.hpp"
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using namespace metaspace;
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// Test the cheerful multitude of metaspace-contains-functions.
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class MetaspaceIsMetaspaceObjTest {
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Mutex* _lock;
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ClassLoaderMetaspace* _ms;
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public:
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MetaspaceIsMetaspaceObjTest() : _lock(nullptr), _ms(nullptr) {}
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~MetaspaceIsMetaspaceObjTest() {
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delete _ms;
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delete _lock;
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}
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void do_test(Metaspace::MetadataType mdType) {
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_lock = new Mutex(Monitor::nosafepoint, "gtest-IsMetaspaceObjTest_lock");
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{
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MutexLocker ml(_lock, Mutex::_no_safepoint_check_flag);
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_ms = new ClassLoaderMetaspace(_lock, Metaspace::StandardMetaspaceType);
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}
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const MetaspaceObj* p = (MetaspaceObj*) _ms->allocate(42, mdType);
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// Test MetaspaceObj::is_metaspace_object
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ASSERT_TRUE(MetaspaceObj::is_valid(p));
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// A misaligned object shall not be recognized
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const MetaspaceObj* p_misaligned = (MetaspaceObj*)((address)p) + 1;
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ASSERT_FALSE(MetaspaceObj::is_valid(p_misaligned));
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// Test VirtualSpaceList::contains
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const VirtualSpaceList* const vslist =
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(mdType == Metaspace::ClassType && Metaspace::using_class_space()) ?
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VirtualSpaceList::vslist_class() : VirtualSpaceList::vslist_nonclass();
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ASSERT_TRUE(vslist->contains((MetaWord*)p));
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// A misaligned pointer shall still be recognized by list::contains
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ASSERT_TRUE(vslist->contains((MetaWord*)((address)p) + 1));
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// Now for some bogus values
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ASSERT_FALSE(MetaspaceObj::is_valid((MetaspaceObj*)nullptr));
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// Should exercise various paths in MetaspaceObj::is_valid()
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ASSERT_FALSE(MetaspaceObj::is_valid((MetaspaceObj*)1024));
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ASSERT_FALSE(MetaspaceObj::is_valid((MetaspaceObj*)8192));
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MetaspaceObj* p_stack = (MetaspaceObj*) &_lock;
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ASSERT_FALSE(MetaspaceObj::is_valid(p_stack));
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MetaspaceObj* p_heap = (MetaspaceObj*) os::malloc(41, mtInternal);
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ASSERT_FALSE(MetaspaceObj::is_valid(p_heap));
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os::free(p_heap);
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// Test Metaspace::contains_xxx
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ASSERT_TRUE(Metaspace::contains(p));
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ASSERT_TRUE(Metaspace::contains_non_shared(p));
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delete _ms;
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_ms = nullptr;
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delete _lock;
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_lock = nullptr;
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}
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};
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TEST_VM(metaspace, is_metaspace_obj_non_class) {
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MetaspaceIsMetaspaceObjTest test;
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test.do_test(Metaspace::NonClassType);
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}
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TEST_VM(metaspace, is_metaspace_obj_class) {
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MetaspaceIsMetaspaceObjTest test;
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test.do_test(Metaspace::ClassType);
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}
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