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/*
* Copyright (c) 2022, 2023, 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.
*/
import org.testng.annotations.Test;
import java.lang.foreign.*;
import java.lang.foreign.Arena;
import java.lang.invoke.MethodHandle;
import java.nio.file.Path;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import static org.testng.Assert.*;
/*
* @test
* @enablePreview
* @requires jdk.foreign.linker != "UNSUPPORTED"
* @run testng/othervm --enable-native-access=ALL-UNNAMED LibraryLookupTest
*/
public class LibraryLookupTest {
static final Path JAVA_LIBRARY_PATH = Path.of(System.getProperty("java.library.path"));
static final MethodHandle INC = Linker.nativeLinker().downcallHandle(FunctionDescriptor.ofVoid());
static final Path LIB_PATH = JAVA_LIBRARY_PATH.resolve(System.mapLibraryName("LibraryLookup"));
@Test
void testLoadLibraryConfined() {
try (Arena arena0 = Arena.ofConfined()) {
callFunc(loadLibrary(arena0));
try (Arena arena1 = Arena.ofConfined()) {
callFunc(loadLibrary(arena1));
try (Arena arena2 = Arena.ofConfined()) {
callFunc(loadLibrary(arena2));
}
}
}
}
@Test(expectedExceptions = IllegalStateException.class)
void testLoadLibraryConfinedClosed() {
MemorySegment addr;
try (Arena arena = Arena.ofConfined()) {
addr = loadLibrary(arena);
}
callFunc(addr);
}
@Test(expectedExceptions = IllegalArgumentException.class)
void testLoadLibraryBadName() {
try (Arena arena = Arena.ofConfined()) {
SymbolLookup.libraryLookup(LIB_PATH.toString() + "\u0000", arena);
}
}
@Test
void testLoadLibraryBadLookupName() {
try (Arena arena = Arena.ofConfined()) {
SymbolLookup lookup = SymbolLookup.libraryLookup(LIB_PATH, arena);
assertTrue(lookup.find("inc\u0000foobar").isEmpty());
}
}
private static MemorySegment loadLibrary(Arena session) {
SymbolLookup lib = SymbolLookup.libraryLookup(LIB_PATH, session);
MemorySegment addr = lib.find("inc").get();
assertEquals(addr.scope(), session.scope());
return addr;
}
private static void callFunc(MemorySegment addr) {
try {
INC.invokeExact(addr);
} catch (IllegalStateException ex) {
throw ex;
} catch (Throwable ex) {
throw new AssertionError(ex);
}
}
static final int ITERATIONS = 100;
static final int MAX_EXECUTOR_WAIT_SECONDS = 20;
static final int NUM_ACCESSORS = Math.min(10, Runtime.getRuntime().availableProcessors());
@Test(expectedExceptions = IllegalArgumentException.class)
void testBadLibraryLookupName() {
SymbolLookup.libraryLookup("nonExistent", Arena.global());
}
@Test(expectedExceptions = IllegalArgumentException.class)
void testBadLibraryLookupPath() {
SymbolLookup.libraryLookup(Path.of("nonExistent"), Arena.global());
}
@Test
void testLoadLibraryShared() throws Throwable {
ExecutorService accessExecutor = Executors.newCachedThreadPool();
for (int i = 0; i < NUM_ACCESSORS ; i++) {
accessExecutor.execute(new LibraryLoadAndAccess());
}
accessExecutor.shutdown();
assertTrue(accessExecutor.awaitTermination(MAX_EXECUTOR_WAIT_SECONDS, TimeUnit.SECONDS));
}
static class LibraryLoadAndAccess implements Runnable {
@Override
public void run() {
for (int i = 0 ; i < ITERATIONS ; i++) {
try (Arena arena = Arena.ofConfined()) {
callFunc(loadLibrary(arena));
}
}
}
}
@Test
void testLoadLibrarySharedClosed() throws Throwable {
Arena arena = Arena.ofShared();
MemorySegment addr = loadLibrary(arena);
ExecutorService accessExecutor = Executors.newCachedThreadPool();
for (int i = 0; i < NUM_ACCESSORS ; i++) {
accessExecutor.execute(new LibraryAccess(addr));
}
while (true) {
try {
arena.close();
break;
} catch (IllegalStateException ex) {
// wait for addressable parameter to be released
Thread.onSpinWait();
}
}
accessExecutor.shutdown();
assertTrue(accessExecutor.awaitTermination(MAX_EXECUTOR_WAIT_SECONDS, TimeUnit.SECONDS));
}
static class LibraryAccess implements Runnable {
final MemorySegment addr;
LibraryAccess(MemorySegment addr) {
this.addr = addr;
}
@Override
public void run() {
for (int i = 0 ; i < ITERATIONS ; i++) {
try {
callFunc(addr);
} catch (IllegalStateException ex) {
// library closed
break;
}
}
}
}
}
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