1 /* 2 * Copyright (c) 2013, 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 * @bug 8026775 28 * @summary Uncommon trap blob did not bang all the stack shadow pages 29 * 30 * @run main/othervm -server -XX:+IgnoreUnrecognizedVMOptions -XX:+TieredCompilation UncommonTrapStackBang 31 * @run main/othervm -server -XX:+IgnoreUnrecognizedVMOptions -XX:-TieredCompilation UncommonTrapStackBang 32 * 33 * 34 * Note: This test does not reproduce the problem with absolute 35 * certainty. Empirically the bug reproduces on Windows some 80+% of 36 * the time. Setting everything up to fail in 100% of the cases turns 37 * out to be tricky at best. 38 * 39 * 40 * The goal of this test is to set up the following stack: 41 * 42 * doIt() 43 * eatStack() 44 * ... 45 * eatStack() 46 * run() 47 * 48 * 49 * When doIt() gets executed it will hit an uncommon trap and expand 50 * into a huge interpreter frame. The doIt method then calls the 51 * compiled version of StringBuilder.<init>() which does a single 52 * stack bang StackShadowPages down. | 1 /* 2 * Copyright (c) 2013, 2014, 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 * @bug 8026775 28 * @summary Uncommon trap blob did not bang all the stack shadow pages 29 * 30 * @run main/othervm UncommonTrapStackBang 31 * 32 * Note: This test does not reproduce the problem with absolute 33 * certainty. Empirically the bug reproduces on Windows some 80+% of 34 * the time. Setting everything up to fail in 100% of the cases turns 35 * out to be tricky at best. 36 * 37 * 38 * The goal of this test is to set up the following stack: 39 * 40 * doIt() 41 * eatStack() 42 * ... 43 * eatStack() 44 * run() 45 * 46 * 47 * When doIt() gets executed it will hit an uncommon trap and expand 48 * into a huge interpreter frame. The doIt method then calls the 49 * compiled version of StringBuilder.<init>() which does a single 50 * stack bang StackShadowPages down. |