1 /*
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  3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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  5  * This code is free software; you can redistribute it and/or modify it
  6  * under the terms of the GNU General Public License version 2 only, as
  7  * published by the Free Software Foundation.
  8  *
  9  * This code is distributed in the hope that it will be useful, but WITHOUT
 10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 12  * version 2 for more details (a copy is included in the LICENSE file that
 13  * accompanied this code).
 14  *
 15  * You should have received a copy of the GNU General Public License version
 16  * 2 along with this work; if not, write to the Free Software Foundation,
 17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 18  *
 19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 20  * or visit www.oracle.com if you need additional information or have any
 21  * questions.
 22  */
 23 
 24 /*
 25  * @test
 26  * @bug 8262912
 27  * @library / /test/lib
 28  * @summary Test class resolution based on whitelist created by ciInstanceKlass entries in replay file.
 29  * @requires vm.flightRecorder != true & vm.compMode != "Xint" & vm.debug == true & vm.compiler2.enabled
 30  * @modules java.base/jdk.internal.misc
 31  * @build jdk.test.whitebox.WhiteBox
 32  * @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
 33  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
 34  *      compiler.ciReplay.TestUnresolvedClasses
 35  */
 36 
 37 package compiler.ciReplay;
 38 
 39 import jdk.test.lib.Asserts;
 40 






 41 import java.util.List;
 42 
 43 public class TestUnresolvedClasses extends CiReplayBase {
 44     private static final String LOG_FILE = "hotspot.log";
 45     private final PrintIdeal printIdeal = new PrintIdeal(LOG_FILE);
 46 
 47     public static void main(String[] args) {
 48         new TestUnresolvedClasses().runTest(false, TIERED_DISABLED_VM_OPTION);
 49     }
 50 
 51     @Override
 52     public String getTestClass() {
 53         return Test.class.getName();
 54     }
 55 
 56     @Override
 57     public void testAction() {
 58         List<String> vmFlags = printIdeal.vmFlags();
 59         vmFlags.add("-XX:CompileCommand=dontinline,*Test::dontInline");
 60         String[] commandLine = vmFlags.toArray(new String[0]);
 61         positiveTest(commandLine);
 62         printIdeal.parse();
 63         // Should find CallStaticJava node for dontInline() as f.bar() is resolved and parsing completes.
 64         checkLogFile(true);
 65 
 66         ReplayFile replayFile = new ReplayFile(getReplayFileName());
 67         // Remove ciInstanceKlass entry for Foo in replay file.
 68         replayFile.removeLineStartingWith("ciInstanceKlass compiler/ciReplay/TestUnresolvedClasses$Foo");
















 69 
 70         positiveTest(commandLine);
 71         printIdeal.parse();
 72         // No ciInstanceKlass entry for Foo is found in the replay. Replay compilation simulates that Foo is unresolved.
 73         // Therefore, C2 cannot resolve f.bar() at parsing time. It emits an UCT to resolve Foo and stops parsing.
 74         // The call to dontInline() will not be parsed and thus we should not find a CallStaticJava node for it.
 75         checkLogFile(false);
 76         remove(LOG_FILE);
 77     }
 78 
 79     // Parse <ideal> entry in hotspot.log file and try to find the call for dontInline().
 80     private void checkLogFile(boolean shouldMatch) {
 81         String toMatch = "Test::dontInline";
 82         String line = printIdeal.find(toMatch);
 83         if (shouldMatch) {
 84             Asserts.assertTrue(line.contains("CallStaticJava"), "must be CallStaticJava node");
 85         } else {
 86             Asserts.assertTrue(line.isEmpty(), "Should not have found " + toMatch);














 87         }

 88     }

 89 
 90     private static class Test {
 91         static Foo f = new Foo();
 92 
 93         public static void main(String[] args) {
 94             for (int i = 0; i < 10000; i++) {
 95                 test();
 96             }
 97         }

 98 
 99         public static void test() {
100             f.bar();
101             // At replay compilation: Should emit UCT for f.bar() because class Foo is unloaded. Parsing stops here.
102             // dontInline() is not parsed anymore.
103             dontInline();
104         }
105 
106         // Not inlined
107         public static void dontInline() {
108         }
109     }

110 
111     private static class Foo {
112         public int bar() {
113             return 3;
114         }
115     }
116 }
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