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/*
* Copyright (c) 2023, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @run testng/othervm --enable-native-access=ALL-UNNAMED TestScope
*/
import org.testng.annotations.*;
import java.lang.foreign.Arena;
import java.lang.foreign.MemorySegment;
import java.lang.foreign.SymbolLookup;
import java.lang.foreign.ValueLayout;
import java.nio.ByteBuffer;
import java.nio.IntBuffer;
import java.util.HexFormat;
import java.util.stream.LongStream;
import static org.testng.Assert.*;
public class TestScope {
static {
System.loadLibrary("LookupTest");
}
@Test
public void testDifferentArrayScope() {
MemorySegment.Scope scope1 = MemorySegment.ofArray(new byte[10]).scope();
MemorySegment.Scope scope2 = MemorySegment.ofArray(new byte[10]).scope();
assertNotEquals(scope1, scope2);
}
@Test
public void testDifferentBufferScope() {
MemorySegment.Scope scope1 = MemorySegment.ofBuffer(ByteBuffer.allocateDirect(10)).scope();
MemorySegment.Scope scope2 = MemorySegment.ofBuffer(ByteBuffer.allocateDirect(10)).scope();
assertNotEquals(scope1, scope2);
}
@Test
public void testDifferentArenaScope() {
MemorySegment.Scope scope1 = Arena.ofAuto().allocate(10).scope();
MemorySegment.Scope scope2 = Arena.ofAuto().allocate(10).scope();
assertNotEquals(scope1, scope2);
}
@Test
public void testSameArrayScope() {
byte[] arr = new byte[10];
assertEquals(MemorySegment.ofArray(arr).scope(), MemorySegment.ofArray(arr).scope());
ByteBuffer buf = ByteBuffer.wrap(arr);
assertEquals(MemorySegment.ofArray(arr).scope(), MemorySegment.ofBuffer(buf).scope());
testDerivedBufferScope(MemorySegment.ofArray(arr));
}
@Test
public void testSameBufferScope() {
ByteBuffer buf = ByteBuffer.allocateDirect(10);
assertEquals(MemorySegment.ofBuffer(buf).scope(), MemorySegment.ofBuffer(buf).scope());
testDerivedBufferScope(MemorySegment.ofBuffer(buf));
}
@Test
public void testSameArenaScope() {
try (Arena arena = Arena.ofConfined()) {
MemorySegment segment1 = arena.allocate(10);
MemorySegment segment2 = arena.allocate(10);
assertEquals(segment1.scope(), segment2.scope());
testDerivedBufferScope(segment1);
}
}
@Test
public void testSameNativeScope() {
MemorySegment segment1 = MemorySegment.ofAddress(42);
MemorySegment segment2 = MemorySegment.ofAddress(43);
assertEquals(segment1.scope(), segment2.scope());
assertEquals(segment1.scope(), segment2.reinterpret(10).scope());
assertEquals(segment1.scope(), Arena.global().scope());
testDerivedBufferScope(segment1.reinterpret(10));
}
@Test
public void testSameLookupScope() {
SymbolLookup loaderLookup = SymbolLookup.loaderLookup();
MemorySegment segment1 = loaderLookup.find("f").get();
MemorySegment segment2 = loaderLookup.find("c").get();
assertEquals(segment1.scope(), segment2.scope());
testDerivedBufferScope(segment1.reinterpret(10));
}
@Test
public void testZeroedOfAuto() {
testZeroed(Arena.ofAuto());
}
@Test
public void testZeroedGlobal() {
testZeroed(Arena.global());
}
@Test
public void testZeroedOfConfined() {
try (Arena arena = Arena.ofConfined()) {
testZeroed(arena);
}
}
@Test
public void testZeroedOfShared() {
try (Arena arena = Arena.ofShared()) {
testZeroed(arena);
}
}
void testDerivedBufferScope(MemorySegment segment) {
ByteBuffer buffer = segment.asByteBuffer();
MemorySegment.Scope expectedScope = segment.scope();
assertEquals(MemorySegment.ofBuffer(buffer).scope(), expectedScope);
// buffer slices should have same scope
ByteBuffer slice = buffer.slice(0, 2);
assertEquals(expectedScope, MemorySegment.ofBuffer(slice).scope());
// buffer views should have same scope
IntBuffer view = buffer.asIntBuffer();
assertEquals(expectedScope, MemorySegment.ofBuffer(view).scope());
}
private static final MemorySegment ZEROED_MEMORY = MemorySegment.ofArray(new byte[8102]);
void testZeroed(Arena arena) {
long byteSize = ZEROED_MEMORY.byteSize();
var segment = arena.allocate(byteSize, Long.BYTES);
long mismatch = ZEROED_MEMORY.mismatch(segment);
assertEquals(mismatch, -1);
}
}
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