Wed, 28 Aug 2013 19:25:18 -0400
8023900: [TESTBUG] Initial compact profile test groups need adjusting
Reviewed-by: dcubed, mchung, hseigel
kvn@1442 | 1 | /* |
kvn@1442 | 2 | * Copyright 2009 SAP AG. All Rights Reserved. |
kvn@1442 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
kvn@1442 | 4 | * |
kvn@1442 | 5 | * This code is free software; you can redistribute it and/or modify it |
kvn@1442 | 6 | * under the terms of the GNU General Public License version 2 only, as |
kvn@1442 | 7 | * published by the Free Software Foundation. |
kvn@1442 | 8 | * |
kvn@1442 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
kvn@1442 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
kvn@1442 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
kvn@1442 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
kvn@1442 | 13 | * accompanied this code). |
kvn@1442 | 14 | * |
kvn@1442 | 15 | * You should have received a copy of the GNU General Public License version |
kvn@1442 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
kvn@1442 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
kvn@1442 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
kvn@1442 | 22 | */ |
kvn@1442 | 23 | |
kvn@1442 | 24 | /** |
kvn@1442 | 25 | * @test |
kvn@1442 | 26 | * @bug 6880034 |
kvn@1442 | 27 | * @summary SIGBUS during deoptimisation at a safepoint on 64bit-SPARC |
kvn@1442 | 28 | * |
kvn@1442 | 29 | * @run main/othervm -Xcomp -Xbatch -XX:CompileCommand=compileonly,Test6880034,deopt_compiledframe_at_safepoint -XX:+PrintCompilation Test6880034 |
kvn@1442 | 30 | */ |
kvn@1442 | 31 | |
kvn@1442 | 32 | |
kvn@1442 | 33 | |
kvn@1442 | 34 | // This test provokes a deoptimisation at a safepoint. |
kvn@1442 | 35 | // |
kvn@1442 | 36 | // It achieves this by compiling the method 'deopt_compiledframe_at_safepoint' |
kvn@1442 | 37 | // before its first usage at a point in time when a call to the virtual method |
kvn@1442 | 38 | // A::doSomething() from within 'deopt_compiledframe_at_safepoint' can be |
kvn@1442 | 39 | // optimised to a static call because class A has no descendants. |
kvn@1442 | 40 | // |
kvn@1442 | 41 | // Later, when deopt_compiledframe_at_safepoint() is running, class B which |
kvn@1442 | 42 | // extends A and overrides the virtual method "doSomething()", is loaded |
kvn@1442 | 43 | // asynchronously in another thread. This makes the compiled code of |
kvn@1442 | 44 | // 'deopt_compiledframe_at_safepoint' invalid and triggers a deoptimisation of |
kvn@1442 | 45 | // the frame where 'deopt_compiledframe_at_safepoint' is running in a |
kvn@1442 | 46 | // loop. |
kvn@1442 | 47 | // |
kvn@1442 | 48 | // The deoptimisation leads to a SIGBUS on 64-bit server VMs on SPARC and to |
kvn@1442 | 49 | // an incorrect result on 32-bit server VMs on SPARC due to a regression |
kvn@1442 | 50 | // introduced by the change: "6420645: Create a vm that uses compressed oops |
kvn@1442 | 51 | // for up to 32gb heapsizes" |
kvn@1442 | 52 | // (http://hg.openjdk.java.net/jdk7/jdk7/hotspot/rev/ba764ed4b6f2). Further |
kvn@1442 | 53 | // investigation showed that change 6420645 is not really the root cause of |
kvn@1442 | 54 | // this error but only reveals a problem with the float register encodings in |
kvn@1442 | 55 | // sparc.ad which was hidden until now. |
kvn@1442 | 56 | // |
kvn@1442 | 57 | // Notice that for this test to fail in jtreg it is crucial that |
kvn@1442 | 58 | // deopt_compiledframe_at_safepoint() runs in the main thread. Otherwise a |
kvn@1442 | 59 | // crash in deopt_compiledframe_at_safepoint() will not be detected as a test |
kvn@1442 | 60 | // failure by jtreg. |
kvn@1442 | 61 | // |
kvn@1442 | 62 | // Author: Volker H. Simonis |
kvn@1442 | 63 | |
kvn@1442 | 64 | class A { |
kvn@1442 | 65 | public int doSomething() { |
kvn@1442 | 66 | return 0; |
kvn@1442 | 67 | } |
kvn@1442 | 68 | } |
kvn@1442 | 69 | |
kvn@1442 | 70 | class B extends A { |
kvn@1442 | 71 | public B() {} |
kvn@1442 | 72 | // override 'A::doSomething()' |
kvn@1442 | 73 | public int doSomething() { |
kvn@1442 | 74 | return 1; |
kvn@1442 | 75 | } |
kvn@1442 | 76 | } |
kvn@1442 | 77 | |
kvn@1442 | 78 | class G { |
kvn@1442 | 79 | public static volatile A a = new A(); |
kvn@1442 | 80 | |
kvn@1442 | 81 | // Change 'a' to point to a 'B' object |
kvn@1442 | 82 | public static void setAtoB() { |
kvn@1442 | 83 | try { |
kvn@1442 | 84 | a = (A) ClassLoader. |
kvn@1442 | 85 | getSystemClassLoader(). |
kvn@1442 | 86 | loadClass("B"). |
kvn@1442 | 87 | getConstructor(new Class[] {}). |
kvn@1442 | 88 | newInstance(new Object[] {}); |
kvn@1442 | 89 | } |
kvn@1442 | 90 | catch (Exception e) { |
kvn@1442 | 91 | System.out.println(e); |
kvn@1442 | 92 | } |
kvn@1442 | 93 | } |
kvn@1442 | 94 | } |
kvn@1442 | 95 | |
kvn@1442 | 96 | public class Test6880034 { |
kvn@1442 | 97 | |
kvn@1442 | 98 | public static volatile boolean is_in_loop = false; |
kvn@1442 | 99 | public static volatile boolean stop_while_loop = false; |
kvn@1442 | 100 | |
kvn@1442 | 101 | public static double deopt_compiledframe_at_safepoint() { |
kvn@1442 | 102 | // This will be an optimised static call to A::doSomething() until we load "B" |
kvn@1442 | 103 | int i = G.a.doSomething(); |
kvn@1442 | 104 | |
kvn@1442 | 105 | // Need more than 16 'double' locals in this frame |
kvn@1442 | 106 | double local1 = 1; |
kvn@1442 | 107 | double local2 = 2; |
kvn@1442 | 108 | double local3 = 3; |
kvn@1442 | 109 | double local4 = 4; |
kvn@1442 | 110 | double local5 = 5; |
kvn@1442 | 111 | double local6 = 6; |
kvn@1442 | 112 | double local7 = 7; |
kvn@1442 | 113 | double local8 = 8; |
kvn@1442 | 114 | |
kvn@1442 | 115 | long k = 0; |
kvn@1442 | 116 | // Once we load "B", this method will be made 'not entrant' and deoptimised |
kvn@1442 | 117 | // at the safepoint which is at the end of this loop. |
kvn@1442 | 118 | while (!stop_while_loop) { |
kvn@1442 | 119 | if (k == 1) local1 += i; |
kvn@1442 | 120 | if (k == 2) local2 += i; |
kvn@1442 | 121 | if (k == 3) local3 += i; |
kvn@1442 | 122 | if (k == 4) local4 += i; |
kvn@1442 | 123 | if (k == 5) local5 += i; |
kvn@1442 | 124 | if (k == 6) local6 += i; |
kvn@1442 | 125 | if (k == 7) local7 += i; |
kvn@1442 | 126 | if (k == 8) local8 += i; |
kvn@1442 | 127 | |
kvn@1442 | 128 | // Tell the world that we're now running wild in the loop |
kvn@1442 | 129 | if (k++ == 20000) is_in_loop = true; |
kvn@1442 | 130 | } |
kvn@1442 | 131 | |
kvn@1442 | 132 | return |
kvn@1442 | 133 | local1 + local2 + local3 + local4 + |
kvn@1442 | 134 | local5 + local6 + local7 + local8 + i; |
kvn@1442 | 135 | } |
kvn@1442 | 136 | |
kvn@1442 | 137 | public static void main(String[] args) { |
kvn@1442 | 138 | |
kvn@1442 | 139 | // Just to resolve G before we compile deopt_compiledframe_at_safepoint() |
kvn@1442 | 140 | G g = new G(); |
kvn@1442 | 141 | |
kvn@1442 | 142 | // Asynchronous thread which will eventually invalidate the code for |
kvn@1442 | 143 | // deopt_compiledframe_at_safepoint() and therefore triggering a |
kvn@1442 | 144 | // deoptimisation of that method. |
kvn@1442 | 145 | new Thread() { |
kvn@1442 | 146 | public void run() { |
kvn@1442 | 147 | while (!is_in_loop) { |
kvn@1442 | 148 | // Wait until the loop is running |
kvn@1442 | 149 | } |
kvn@1442 | 150 | // Load class 'B' asynchronously.. |
kvn@1442 | 151 | G.setAtoB(); |
kvn@1442 | 152 | // ..and stop the loop |
kvn@1442 | 153 | stop_while_loop = true; |
kvn@1442 | 154 | } |
kvn@1442 | 155 | }.start(); |
kvn@1442 | 156 | |
kvn@1442 | 157 | // Run the loop in deopt_compiledframe_at_safepoint() |
kvn@1442 | 158 | double retVal = deopt_compiledframe_at_safepoint(); |
kvn@1442 | 159 | |
kvn@1442 | 160 | System.out.println(retVal == 36 ? "OK" : "ERROR : " + retVal); |
kvn@1442 | 161 | if (retVal != 36) throw new RuntimeException(); |
kvn@1442 | 162 | } |
kvn@1442 | 163 | } |