64 lines
2.7 KiB
C++
64 lines
2.7 KiB
C++
/*
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* Copyright (c) 2020, Oracle and/or its affiliates. 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/mutex.hpp"
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#include "runtime/mutexLocker.hpp"
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#include "unittest.hpp"
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#ifdef ASSERT
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// Test mismatched safepoint check flag on lock declaration vs. lock acquisition.
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TEST_VM_ASSERT_MSG(SafepointLockAssertTest, always_check,
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"This lock should always have a safepoint check for Java threads") {
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MutexLocker ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, Mutex::_safepoint_check_always),
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Mutex::_no_safepoint_check_flag);
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}
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TEST_VM_ASSERT_MSG(SafepointLockAssertTest, never_check,
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"This lock should never have a safepoint check for Java thread") {
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MutexLocker ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, Mutex::_safepoint_check_never),
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Mutex::_safepoint_check_flag);
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}
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TEST_VM_ASSERT_MSG(SafepointLockAssertTest, special_locks,
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"Special locks or below should never safepoint") {
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MutexLocker ml(new Mutex(Mutex::special, "SpecialTest_lock", /*vm_block*/true, Mutex::_safepoint_check_always),
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Mutex::_safepoint_check_flag);
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}
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TEST_VM_ASSERT_MSG(SafepointLockAssertTest, possible_safepoint_lock,
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"Possible safepoint reached by thread that does not allow it") {
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JavaThread* thread = JavaThread::current();
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ThreadInVMfromNative in_native(thread);
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MutexLocker ml(new Mutex(Mutex::special, "SpecialTest_lock", /*vm_block*/true, Mutex::_safepoint_check_never),
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Mutex::_no_safepoint_check_flag);
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thread->print_thread_state_on(tty);
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// If the lock above succeeds, try to safepoint to test the NSV implied with this special lock.
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ThreadBlockInVM tbivm(thread);
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thread->print_thread_state_on(tty);
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}
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#endif // ASSERT
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