1 /*
   2  * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   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 package compiler.valhalla.valuetypes;
  25 
  26 import jdk.test.lib.Asserts;
  27 
  28 import java.lang.reflect.Method;
  29 
  30 /*
  31  * @test
  32  * @summary Test calling native methods with value type arguments from compiled code.
  33  * @library /testlibrary /test/lib /compiler/whitebox /
  34  * @compile -XDallowWithFieldOperator TestJNICalls.java
  35  * @run driver ClassFileInstaller sun.hotspot.WhiteBox jdk.test.lib.Platform
  36  * @run main/othervm/timeout=120 -Xbootclasspath/a:. -XX:+IgnoreUnrecognizedVMOptions -XX:+UnlockDiagnosticVMOptions
  37  *                               -XX:+UnlockExperimentalVMOptions -XX:+WhiteBoxAPI -XX:+EnableValhalla
  38  *                               compiler.valhalla.valuetypes.ValueTypeTest
  39  *                               compiler.valhalla.valuetypes.TestJNICalls
  40  */
  41 public class TestJNICalls extends ValueTypeTest {
  42     // Extra VM parameters for some test scenarios. See ValueTypeTest.getVMParameters()
  43     @Override
  44     public String[] getExtraVMParameters(int scenario) {
  45         return null;
  46     }
  47 
  48     public static void main(String[] args) throws Throwable {
  49         TestJNICalls test = new TestJNICalls();
  50         test.run(args, MyValue1.class);
  51     }
  52 
  53     static {
  54         System.loadLibrary("TestJNICalls");
  55     }
  56 
  57     public native Object testMethod1(MyValue1 o);
  58     public native long testMethod2(MyValue1 o);
  59 
  60     // Pass a value type to a native method that calls back into Java code and returns a value
  61     @Test
  62     @Warmup(10000) // Make sure native method is compiled
  63     public MyValue1 test1(MyValue1 vt, boolean callback) {
  64         if (!callback) {
  65           return (MyValue1)testMethod1(vt);
  66         } else {
  67           return vt;
  68         }
  69     }
  70 
  71     @DontCompile
  72     public void test1_verifier(boolean warmup) {
  73         MyValue1 vt = MyValue1.createWithFieldsInline(rI, rL);
  74         MyValue1 result = test1(vt, false);
  75         Asserts.assertEQ(result.hash(), vt.hash());
  76         result = test1(vt, true);
  77         Asserts.assertEQ(result.hash(), vt.hash());
  78     }
  79 
  80     // Pass a value type to a native method that calls the hash method and returns the result
  81     @Test
  82     @Warmup(10000) // Make sure native method is compiled
  83     public long test2(MyValue1 vt) {
  84         return testMethod2(vt);
  85     }
  86 
  87     @DontCompile
  88     public void test2_verifier(boolean warmup) {
  89         MyValue1 vt = MyValue1.createWithFieldsInline(rI, rL);
  90         long result = test2(vt);
  91         Asserts.assertEQ(result, vt.hash());
  92     }
  93 
  94     static value class MyValueWithNative {
  95         public final int x;
  96 
  97         private MyValueWithNative(int x) {
  98             this.x = x;
  99         }
 100 
 101         public native int testMethod3();
 102     }
 103 
 104     // Call a native method with a value type receiver
 105     @Test
 106     @Warmup(10000) // Make sure native method is compiled
 107     public int test3(MyValueWithNative vt) {
 108         return vt.testMethod3();
 109     }
 110 
 111     @DontCompile
 112     public void test3_verifier(boolean warmup) {
 113         MyValueWithNative vt = new MyValueWithNative(rI);
 114         int result = test3(vt);
 115         Asserts.assertEQ(result, rI);
 116     }
 117 }