54 lines
2.1 KiB
Java
54 lines
2.1 KiB
Java
/*
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* Copyright (c) 2020, 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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* @bug 8248421
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* @summary SystemCLinker should have a way to free memory allocated outside Java
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* @run testng/othervm -Dforeign.restricted=permit TestFree
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*/
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import jdk.incubator.foreign.MemoryAccess;
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import jdk.incubator.foreign.MemoryAddress;
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import jdk.incubator.foreign.MemoryLayout;
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import jdk.incubator.foreign.MemorySegment;
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import static jdk.incubator.foreign.CLinker.*;
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import static org.testng.Assert.assertEquals;
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public class TestFree {
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private static MemorySegment asArrayRestricted(MemoryAddress addr, MemoryLayout layout, int numElements) {
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return addr.asSegmentRestricted(numElements * layout.byteSize());
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}
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public void test() throws Throwable {
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String str = "hello world";
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MemoryAddress addr = allocateMemoryRestricted(str.length() + 1);
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MemorySegment seg = asArrayRestricted(addr, C_CHAR, str.length() + 1);
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seg.copyFrom(MemorySegment.ofArray(str.getBytes()));
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MemoryAccess.setByteAtOffset(seg, str.length(), (byte)0);
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assertEquals(str, toJavaString(seg));
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freeMemoryRestricted(addr);
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}
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}
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