73 lines
2.4 KiB
C++
73 lines
2.4 KiB
C++
/*
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* Copyright (c) 2020, 2021, 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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#include "precompiled.hpp"
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#include "runtime/interfaceSupport.inline.hpp"
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#include "runtime/safefetch.inline.hpp"
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#include "runtime/vmOperations.hpp"
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#include "runtime/vmThread.hpp"
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#include "utilities/globalDefinitions.hpp"
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#include "utilities/vmError.hpp"
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#include "unittest.hpp"
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static const intptr_t pattern = LP64_ONLY(0xABCDABCDABCDABCDULL) NOT_LP64(0xABCDABCD);
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static intptr_t* invalid_address = (intptr_t*)VMError::segfault_address;
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TEST_VM(os, safefetch_can_use) {
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// Once VM initialization is through,
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// safefetch should work on every platform.
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ASSERT_TRUE(CanUseSafeFetch32());
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}
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TEST_VM(os, safefetch_positive) {
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intptr_t v = pattern;
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intptr_t a = SafeFetchN(&v, 1);
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ASSERT_EQ(v, a);
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}
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TEST_VM(os, safefetch_negative) {
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intptr_t a = SafeFetchN(invalid_address, pattern);
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ASSERT_EQ(pattern, a);
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a = SafeFetchN(invalid_address, ~pattern);
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ASSERT_EQ(~pattern, a);
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}
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class VM_TestSafeFetchAtSafePoint : public VM_GTestExecuteAtSafepoint {
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public:
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void doit() {
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// Regression test for JDK-8257828
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// Should not crash.
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intptr_t a = SafeFetchN(invalid_address, pattern);
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ASSERT_EQ(pattern, a);
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a = SafeFetchN(invalid_address, ~pattern);
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ASSERT_EQ(~pattern, a);
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}
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};
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TEST_VM(os, safefetch_negative_at_safepoint) {
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VM_TestSafeFetchAtSafePoint op;
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ThreadInVMfromNative invm(JavaThread::current());
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VMThread::execute(&op);
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}
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