827e5e3226
8225052: javax.lang.model support for records 8225053: Preview APIs support for records 8225055: Javadoc for records 8226314: com.sun.source support for records 8227113: Specification for java.lang.Record 8233526: JVM support for records Implement records in the compiler and the JVM, including serialization, reflection and APIs support Co-authored-by: Brian Goetz <brian.goetz@oracle.com> Co-authored-by: Maurizio Cimadamore <maurizio.cimadamore@oracle.com> Co-authored-by: Harold Seigel <harold.seigel@oracle.com> Co-authored-by: Joe Darcy <joe.darcy@oracle.com> Co-authored-by: Jonathan Gibbons <jonathan.gibbons@oracle.com> Co-authored-by: Chris Hegarty <chris.hegarty@oracle.com> Co-authored-by: Jan Lahoda <jan.lahoda@oracle.com> Reviewed-by: mcimadamore, briangoetz, alanb, darcy, chegar, jrose, jlahoda, coleenp, dholmes, lfoltan, mchung, sadayapalam, hannesw, sspitsyn
69 lines
2.3 KiB
Java
69 lines
2.3 KiB
Java
/*
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* Copyright (c) 2002, 2019, 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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/**
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* @test
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* @bug 4369826 8078582 8190884
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* @run main/othervm LotsOfOutput
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* @summary Process with lots of output should not crash VM
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* @author kladko
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*/
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public class LotsOfOutput {
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static final Runtime runtime = Runtime.getRuntime();
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// Allow memory to grow by up to 1Mb total
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static final int THRESHOLD = 1048576;
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// Compute used memory
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static long usedMemory() {
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return runtime.totalMemory() - runtime.freeMemory();
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}
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public static void main(String[] args) throws Exception {
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if (! UnixCommands.isUnix) {
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System.out.println("For UNIX only");
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return;
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}
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UnixCommands.ensureCommandsAvailable("cat");
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Process p = runtime.exec(UnixCommands.cat() + " /dev/zero");
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long prev = usedMemory();
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int growing = 0;
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for (int i = 1; i < 10; i++) {
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Thread.sleep(100);
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long used = usedMemory();
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if (used != prev) {
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System.out.printf("consuming memory: i: %d, prev: %d, used: %d, delta: %d%n",
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i, prev, used, used - prev);
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}
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if (used > prev + THRESHOLD)
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growing += 1;
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prev = used;
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}
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if (growing > 2)
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throw new Exception("Process consumes memory: growing " + growing);
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}
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}
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