author | egahlin |
Thu, 30 May 2019 23:04:50 +0200 | |
branch | JEP-349-branch |
changeset 57380 | 6a7e7743b82f |
child 57385 | 7d9d4f629f6e |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 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. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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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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package jdk.jfr.api.consumer.filestream; |
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|
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import java.nio.file.Files; |
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import java.nio.file.Path; |
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import java.time.Instant; |
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import java.util.ArrayList; |
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import java.util.List; |
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import java.util.concurrent.CyclicBarrier; |
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import java.util.concurrent.atomic.AtomicBoolean; |
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import java.util.concurrent.atomic.AtomicReference; |
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|
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import jdk.jfr.Event; |
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import jdk.jfr.Recording; |
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import jdk.jfr.consumer.EventStream; |
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/** |
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* @test |
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* @summary Test EventStream::setOrdered(...) |
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* @key jfr |
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* @requires vm.hasJFR |
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* @library /test/lib |
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* @run main/othervm jdk.jfr.api.consumer.filestream.TestOrdered |
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*/ |
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public class TestOrdered { |
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static class OrderedEvent extends Event { |
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} |
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static class Emitter extends Thread { |
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private final CyclicBarrier barrier; |
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public Emitter(CyclicBarrier barrier) { |
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this.barrier = barrier; |
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} |
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@Override |
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public void run() { |
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OrderedEvent e1 = new OrderedEvent(); |
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e1.commit(); |
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try { |
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barrier.await(); |
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} catch (Exception e) { |
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e.printStackTrace(); |
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throw new Error("Unexpected exception in barrier"); |
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} |
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OrderedEvent e2 = new OrderedEvent(); |
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e2.commit(); |
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} |
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} |
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private static final int THREAD_COUNT = 4; |
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public static void main(String... args) throws Exception { |
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Path p = makeUnorderedRecording(); |
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testSetOrderedTrue(p); |
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testSetOrderedFalse(p); |
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} |
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private static void testSetOrderedTrue(Path p) throws Exception { |
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AtomicReference<Instant> timestamp = new AtomicReference<>(Instant.MIN); |
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try (EventStream es = EventStream.openFile(p)) { |
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es.setOrdered(true); |
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es.onEvent(e -> { |
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Instant endTime = e.getEndTime(); |
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if (endTime.isBefore(timestamp.get())) { |
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throw new Error("Events are not ordered!"); |
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} |
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timestamp.set(endTime); |
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}); |
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es.start(); |
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} |
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} |
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private static void testSetOrderedFalse(Path p) throws Exception { |
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AtomicReference<Instant> timestamp = new AtomicReference<>(Instant.MIN); |
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AtomicBoolean unoreded = new AtomicBoolean(false); |
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try (EventStream es = EventStream.openFile(p)) { |
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es.setOrdered(false); |
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es.onEvent(e -> { |
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Instant endTime = e.getEndTime(); |
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if (endTime.isBefore(timestamp.get())) { |
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unoreded.set(true); |
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es.close(); |
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} |
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timestamp.set(endTime); |
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}); |
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es.start(); |
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if (!unoreded.get()) { |
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throw new Exception("Expected at least some events to be out of order"); |
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} |
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} |
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} |
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private static Path makeUnorderedRecording() throws Exception { |
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CyclicBarrier barrier = new CyclicBarrier(THREAD_COUNT + 1); |
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try (Recording r = new Recording()) { |
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r.start(); |
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List<Emitter> emitters = new ArrayList<>(); |
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for (int i = 0; i < THREAD_COUNT; i++) { |
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Emitter e = new Emitter(barrier); |
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e.start(); |
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emitters.add(e); |
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130 |
} |
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131 |
// Thread buffers should now have one event each |
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132 |
barrier.await(); |
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133 |
// Add another event to each thread buffer, so |
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134 |
// events are bound to come out of order when they |
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135 |
// are flushed |
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136 |
for (Emitter e : emitters) { |
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137 |
e.join(); |
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138 |
} |
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139 |
r.stop(); |
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140 |
Path p = Files.createTempFile("recording", ".jfr"); |
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141 |
r.dump(p); |
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142 |
return p; |
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143 |
} |
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144 |
} |
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145 |
} |