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| 1 | +/* |
| 2 | + * Copyright (c) 2021, 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 | +package compiler.c1; |
| 25 | + |
| 26 | +import java.io.IOException; |
| 27 | +import java.io.InterruptedIOException; |
| 28 | + |
| 29 | +/* |
| 30 | + * @test |
| 31 | + * @author Chris Cole |
| 32 | + * @bug 8267042 |
| 33 | + * @summary missing displaced_header initialization causes hangup |
| 34 | + * @run main/othervm -XX:+TieredCompilation -XX:TieredStopAtLevel=1 |
| 35 | + * -XX:-BackgroundCompilation -XX:CompileThreshold=1 |
| 36 | + * -XX:CompileOnly=compiler.c1.Test8267042::write |
| 37 | + * compiler.c1.Test8267042 |
| 38 | + */ |
| 39 | +public class Test8267042 { |
| 40 | + |
| 41 | + private static int DATA_SIZE = 4; |
| 42 | + |
| 43 | + private char buffer; |
| 44 | + private boolean empty = true; |
| 45 | + |
| 46 | + public static void main(String[] args) { |
| 47 | + Test8267042 test = new Test8267042(); |
| 48 | + test.run(); |
| 49 | + } |
| 50 | + |
| 51 | + private void run() { |
| 52 | + System.out.println("Starting test"); |
| 53 | + |
| 54 | + Thread writeThread = new Thread(new Runnable() { |
| 55 | + @Override |
| 56 | + public void run() { |
| 57 | + char data[] = new char[DATA_SIZE]; |
| 58 | + try { |
| 59 | + write(data, 0, data.length); |
| 60 | + } catch (IOException e) { |
| 61 | + e.printStackTrace(); |
| 62 | + } |
| 63 | + } |
| 64 | + }); |
| 65 | + writeThread.setDaemon(true); |
| 66 | + writeThread.start(); |
| 67 | + |
| 68 | + Thread readThread = new Thread(new Runnable() { |
| 69 | + @Override |
| 70 | + public void run() { |
| 71 | + try { |
| 72 | + for (int i = 0; i < DATA_SIZE; i++) { |
| 73 | + read(); |
| 74 | + } |
| 75 | + } catch (IOException e) { |
| 76 | + e.printStackTrace(); |
| 77 | + } |
| 78 | + } |
| 79 | + }); |
| 80 | + readThread.setDaemon(true); |
| 81 | + readThread.start(); |
| 82 | + |
| 83 | + try { |
| 84 | + writeThread.join(5000); |
| 85 | + if (writeThread.isAlive()) { |
| 86 | + throw new InternalError("write thread deadlocked"); |
| 87 | + } |
| 88 | + readThread.join(5000); |
| 89 | + if (readThread.isAlive()) { |
| 90 | + throw new InternalError("read thread deadlocked"); |
| 91 | + } |
| 92 | + } catch (InterruptedException e) { |
| 93 | + throw new InternalError("unexpected InterrruptedException while waiting to join threads", e); |
| 94 | + } |
| 95 | + System.out.println("Test passed"); |
| 96 | + } |
| 97 | + |
| 98 | + synchronized void write(char data[], int offset, int length) throws IOException { |
| 99 | + while (--length >= 0) { |
| 100 | + getZeroOnStack(offset); |
| 101 | + write(data[offset++]); |
| 102 | + } |
| 103 | + } |
| 104 | + |
| 105 | + synchronized void write(int c) throws IOException { |
| 106 | + while (!empty) { |
| 107 | + try { |
| 108 | + wait(1000); |
| 109 | + } catch (InterruptedException e) { |
| 110 | + throw new InterruptedIOException(); |
| 111 | + } |
| 112 | + } |
| 113 | + buffer = (char) c; |
| 114 | + empty = false; |
| 115 | + notifyAll(); |
| 116 | + } |
| 117 | + |
| 118 | + public synchronized int read() throws IOException { |
| 119 | + while (empty) { |
| 120 | + try { |
| 121 | + System.out.println("read() before wait"); |
| 122 | + wait(1000); |
| 123 | + System.out.println("read() after wait"); |
| 124 | + } catch (InterruptedException e) { |
| 125 | + throw new InterruptedIOException(); |
| 126 | + } |
| 127 | + } |
| 128 | + int value = buffer; |
| 129 | + empty = true; |
| 130 | + notifyAll(); |
| 131 | + return value; |
| 132 | + } |
| 133 | + |
| 134 | + private void getZeroOnStack(int offset) { |
| 135 | + int l1; |
| 136 | + int l2; |
| 137 | + int l3; |
| 138 | + int l4; |
| 139 | + int l5; |
| 140 | + int l6; |
| 141 | + int l7; |
| 142 | + int l8; |
| 143 | + int l9; |
| 144 | + int l10; |
| 145 | + int l11; |
| 146 | + int l12; |
| 147 | + int l13; |
| 148 | + int l14; |
| 149 | + int l15; |
| 150 | + int l16; |
| 151 | + |
| 152 | + l1 = 0; |
| 153 | + l2 = 0; |
| 154 | + l3 = 0; |
| 155 | + l4 = 0; |
| 156 | + l5 = 0; |
| 157 | + l6 = 0; |
| 158 | + l7 = 0; |
| 159 | + l8 = 0; |
| 160 | + l9 = 0; |
| 161 | + l10 = 0; |
| 162 | + l11 = 0; |
| 163 | + l12 = 0; |
| 164 | + l13 = 0; |
| 165 | + l14 = 0; |
| 166 | + l15 = 0; |
| 167 | + l16 = 0; |
| 168 | + } |
| 169 | +} |
| 170 | + |
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