/*
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* 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.
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*/
import java.lang.reflect.Method;
import java.util.EnumSet;
import sun.hotspot.WhiteBox;
import sun.hotspot.code.BlobType;
import jdk.test.lib.Asserts;
import jdk.test.lib.InfiniteLoop;
import compiler.whitebox.CompilerWhiteBoxTest;
/*
* @test
* @bug 8059624 8064669
* @library /testlibrary /test/lib /
* @modules java.management
* @build ForceNMethodSweepTest
* @run main ClassFileInstaller sun.hotspot.WhiteBox
* sun.hotspot.WhiteBox$WhiteBoxPermission
* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
* -XX:-TieredCompilation -XX:+WhiteBoxAPI
* -XX:CompileCommand=compileonly,compiler.whitebox.SimpleTestCase$Helper::*
* -XX:-BackgroundCompilation ForceNMethodSweepTest
* @summary testing of WB::forceNMethodSweep
*/
public class ForceNMethodSweepTest extends CompilerWhiteBoxTest {
public static void main(String[] args) throws Exception {
CompilerWhiteBoxTest.main(ForceNMethodSweepTest::new, args);
}
private final EnumSet<BlobType> blobTypes;
private ForceNMethodSweepTest(TestCase testCase) {
super(testCase);
// to prevent inlining of #method
WHITE_BOX.testSetDontInlineMethod(method, true);
blobTypes = BlobType.getAvailable();
}
@Override
protected void test() throws Exception {
checkNotCompiled();
guaranteedSweep();
int usage = getTotalUsage();
compile();
checkCompiled();
int afterCompilation = getTotalUsage();
Asserts.assertGT(afterCompilation, usage,
"compilation should increase usage");
guaranteedSweep();
int afterSweep = getTotalUsage();
Asserts.assertLTE(afterSweep, afterCompilation,
"sweep shouldn't increase usage");
deoptimize();
guaranteedSweep();
int afterDeoptAndSweep = getTotalUsage();
Asserts.assertLT(afterDeoptAndSweep, afterSweep,
"sweep after deoptimization should decrease usage");
}
private int getTotalUsage() {
int usage = 0;
for (BlobType type : blobTypes) {
usage += type.getMemoryPool().getUsage().getUsed();
}
return usage;
}
private void guaranteedSweep() {
// not entrant -> ++stack_traversal_mark -> zombie -> reclamation -> flushed
for (int i = 0; i < 5; ++i) {
WHITE_BOX.fullGC();
WHITE_BOX.forceNMethodSweep();
}
}
}