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23 
24 // Android-added: package for test.
25 package test.java.lang.invoke.VarHandles;
26 
27 /*
28  * @test
29  * @bug 8195650
30  * @summary Test linking of method references to VarHandle access methods.
31  * @run testng VarHandleMethodReferenceTest
32  */
33 
34 import org.testng.annotations.Test;
35 
36 import java.lang.invoke.*;
37 
38 public class VarHandleMethodReferenceTest {
39 
40   interface R {
apply()41       void apply();
42   }
43 
44   @Test
testMethodReferences()45   public void testMethodReferences() {
46       VarHandle vh = MethodHandles.arrayElementVarHandle(int[].class);
47 
48       // The compilation of these method references will result in the
49       // placement of MethodHandles in the constant pool that reference
50       // VarHandle signature polymorphic methods.
51       // When those constant method handles are loaded the VarHandle invoker
52       // mechanism will be used where the first argument to invocation will be
53       // the bound VarHandle instance
54 
55       // VarHandle invokers are tested by other test classes so here it
56       // is just necessary to check that functional objects can be successfully
57       // obtained, it does not matter about the signature of the functional
58       // interface
59 
60       R r;
61       r = vh::get;
62       r = vh::set;
63       r = vh::getVolatile;
64       r = vh::setVolatile;
65       r = vh::getOpaque;
66       r = vh::setOpaque;
67       r = vh::getAcquire;
68       r = vh::setRelease;
69 
70       r = vh::compareAndSet;
71       r = vh::compareAndExchange;
72       r = vh::compareAndExchangeAcquire;
73       r = vh::compareAndExchangeRelease;
74       r = vh::weakCompareAndSetPlain;
75       r = vh::weakCompareAndSet;
76       r = vh::weakCompareAndSetAcquire;
77       r = vh::weakCompareAndSetRelease;
78 
79       r = vh::getAndSet;
80       r = vh::getAndSetAcquire;
81       r = vh::getAndSetRelease;
82       r = vh::getAndAdd;
83       r = vh::getAndAddAcquire;
84       r = vh::getAndAddRelease;
85       r = vh::getAndBitwiseOr;
86       r = vh::getAndBitwiseOrAcquire;
87       r = vh::getAndBitwiseOrRelease;
88       r = vh::getAndBitwiseAnd;
89       r = vh::getAndBitwiseAndAcquire;
90       r = vh::getAndBitwiseAndRelease;
91       r = vh::getAndBitwiseXor;
92       r = vh::getAndBitwiseXorAcquire;
93       r = vh::getAndBitwiseXorRelease;
94   }
95 }
96