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/*
* Copyright (c) 2016, 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.
*/
/**
* @test
* @library /test/lib /
*
* @build sun.hotspot.WhiteBox
* @run driver ClassFileInstaller sun.hotspot.WhiteBox
* sun.hotspot.WhiteBox$WhiteBoxPermission
* @run driver/timeout=180 compiler.jsr292.ContinuousCallSiteTargetChange
*/
package compiler.jsr292;
import jdk.test.lib.Asserts;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
import sun.hotspot.WhiteBox;
import java.lang.invoke.CallSite;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import java.lang.invoke.MutableCallSite;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class ContinuousCallSiteTargetChange {
static final int ITERATIONS = Integer.parseInt(System.getProperty("iterations", "50"));
static void runTest(Class<?> test, String... extraArgs) throws Exception {
List<String> argsList = new ArrayList<>(
List.of("-XX:+IgnoreUnrecognizedVMOptions",
"-XX:PerBytecodeRecompilationCutoff=10", "-XX:PerMethodRecompilationCutoff=10",
"-XX:+PrintCompilation", "-XX:+UnlockDiagnosticVMOptions", "-XX:+PrintInlining"));
argsList.addAll(Arrays.asList(extraArgs));
argsList.add(test.getName());
argsList.add(Integer.toString(ITERATIONS));
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(argsList);
OutputAnalyzer analyzer = new OutputAnalyzer(pb.start());
analyzer.shouldHaveExitValue(0);
analyzer.shouldNotContain("made not compilable");
analyzer.shouldNotContain("decompile_count > PerMethodRecompilationCutoff");
}
static void testServer(Class<?> test, String... args) throws Exception {
List<String> extraArgsList = new ArrayList<>(
List.of("-server", "-XX:-TieredCompilation", "-Xbootclasspath/a:.",
"-XX:+UnlockDiagnosticVMOptions", "-XX:+WhiteBoxAPI"));
extraArgsList.addAll(Arrays.asList(args));
runTest(test, extraArgsList.toArray(new String[extraArgsList.size()]));
}
static void testClient(Class<?> test, String... args) throws Exception {
List<String> extraArgsList = new ArrayList<>(
List.of("-client", "-XX:+TieredCompilation", "-XX:TieredStopAtLevel=1",
"-Xbootclasspath/a:.", "-XX:+UnlockDiagnosticVMOptions", "-XX:+WhiteBoxAPI"));
extraArgsList.addAll(Arrays.asList(args));
runTest(test, extraArgsList.toArray(new String[extraArgsList.size()]));
}
public static void main(String[] args) throws Exception {
testServer(RecompilationTest.class, "-Xbatch");
testClient(RecompilationTest.class, "-Xbatch");
testServer(PingPongTest.class);
testClient(PingPongTest.class);
}
static MethodHandle findStatic(Class<?> cls, String name, MethodType mt) {
try {
return MethodHandles.lookup().findStatic(cls, name, mt);
} catch (Exception e) {
throw new Error(e);
}
}
static class RecompilationTest {
static final MethodType mt = MethodType.methodType(void.class);
static final CallSite cs = new MutableCallSite(mt);
static final MethodHandle mh = cs.dynamicInvoker();
static void f() {
}
static void test1() throws Throwable {
mh.invokeExact();
}
static void test2() throws Throwable {
cs.getTarget().invokeExact();
}
static void iteration() throws Throwable {
MethodHandle mh1 = findStatic(RecompilationTest.class, "f", mt);
cs.setTarget(mh1);
for (int i = 0; i < 20_000; i++) {
test1();
test2();
}
}
public static void main(String[] args) throws Throwable {
int iterations = Integer.parseInt(args[0]);
for (int i = 0; i < iterations; i++) {
iteration();
}
}
}
static class PingPongTest {
static final MethodType mt = MethodType.methodType(void.class);
static final CallSite cs = new MutableCallSite(mt);
static final MethodHandle mh = cs.dynamicInvoker();
static final MethodHandle ping = findStatic(PingPongTest.class, "ping", mt);
static final MethodHandle pong = findStatic(PingPongTest.class, "pong", mt);
static void ping() {
Asserts.assertEQ(cs.getTarget(), ping, "wrong call site target");
cs.setTarget(pong);
}
static void pong() {
Asserts.assertEQ(cs.getTarget(), pong, "wrong call site target");
cs.setTarget(ping);
}
static void iteration() throws Throwable {
cs.setTarget(ping);
for (int i = 0; i < 20_000; i++) {
mh.invokeExact();
}
}
public static void main(String[] args) throws Throwable {
int iterations = Integer.parseInt(args[0]);
WhiteBox whiteBox = WhiteBox.getWhiteBox();
for (int i = 0; i < iterations; i++) {
iteration();
whiteBox.forceNMethodSweep();
}
}
}
}
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