8f4f088a12
Co-authored-by: Vlaidmir Ivanov <vladimir.x.ivanov@oracle.com> Reviewed-by: alanb, psandoz, chegar, rriggs, plevart, briangoetz, jrose, adinn, vlivanov
83 lines
2.7 KiB
Java
83 lines
2.7 KiB
Java
/*
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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.
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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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/*
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* @test
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* @run testng TestSharedAccess
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*/
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import jdk.incubator.foreign.MemorySegment;
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import jdk.incubator.foreign.MemoryLayouts;
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import org.testng.annotations.*;
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import java.lang.invoke.VarHandle;
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import java.util.ArrayList;
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import java.util.List;
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import static org.testng.Assert.*;
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public class TestSharedAccess {
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static final VarHandle intHandle = MemoryLayouts.JAVA_INT.varHandle(int.class);
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@Test
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public void testShared() throws Throwable {
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try (MemorySegment s = MemorySegment.allocateNative(4)) {
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setInt(s, 42);
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assertEquals(getInt(s), 42);
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List<Thread> threads = new ArrayList<>();
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for (int i = 0 ; i < 1000 ; i++) {
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threads.add(new Thread(() -> {
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try (MemorySegment local = s.acquire()) {
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assertEquals(getInt(local), 42);
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}
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}));
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}
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threads.forEach(Thread::start);
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threads.forEach(t -> {
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try {
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t.join();
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} catch (Throwable e) {
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throw new IllegalStateException(e);
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}
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});
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}
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}
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@Test(expectedExceptions=IllegalStateException.class)
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public void testBadCloseWithPendingAcquire() {
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try (MemorySegment segment = MemorySegment.allocateNative(8)) {
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segment.acquire();
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} //should fail here!
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}
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static int getInt(MemorySegment handle) {
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return (int)intHandle.getVolatile(handle.baseAddress());
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}
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static void setInt(MemorySegment handle, int value) {
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intHandle.setVolatile(handle.baseAddress(), value);
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}
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}
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