1 /* 2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 25 /* 26 * @test 27 * 28 * @summary converted from VM Testbase vm/mlvm/indy/stress/java/mutableCallSiteDekker. 29 * VM Testbase keywords: [feature_mlvm, nonconcurrent] 30 * VM Testbase readme: 31 * DESCRIPTION 32 * The test tries to detect a stale handle in MutableCallSite due to store-after-load reordering in 33 * modern CPU. 34 * Since MutableCallSite does not guarantee that changes by one thread are propagated to others, 35 * the test may fail. We ignore such failure. 36 * The current Oracle Hotspot JVM implementation uses an internal mutex when relinking a call site, 37 * which serves as memory barrier between store and load in this test, so I never saw it failing. 38 * 39 * @library /vmTestbase 40 * /test/lib 41 * 42 * @comment build actor 43 * @build vm.mlvm.indy.stress.java.mutableCallSiteDekker.Actor 44 * 45 * @run driver jdk.test.lib.FileInstaller . . 46 * 47 * @comment build test class and indify classes 48 * @build vm.mlvm.share.DekkerTest 49 * @run driver vm.mlvm.share.IndifiedClassesBuilder 50 * 51 * @run main/othervm 52 * vm.mlvm.share.DekkerTest 53 * -actorClass vm.mlvm.indy.stress.java.mutableCallSiteDekker.Actor 54 * -iterations 100000 55 * -runs 30 56 * -mayFail true 57 */ 58