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8057020: LambdaForm caches should support eviction

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Reviewed-by: psandoz, jrose, shade
This commit is contained in:
Vladimir Ivanov 2014-12-04 07:15:37 -08:00
parent bf31fc249e
commit ea89dad13c
6 changed files with 106 additions and 43 deletions
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20
jdk/test/java/lang/invoke/LFCaching/LambdaFormTestCase.java
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@ -23,9 +23,12 @@
import com.oracle.testlibrary.jsr292.Helper;
import com.sun.management.HotSpotDiagnosticMXBean;
import java.lang.management.GarbageCollectorMXBean;
import java.lang.management.ManagementFactory;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.List;
import java.util.function.Function;
import jdk.testlibrary.Utils;
@ -49,6 +52,11 @@ public abstract class LambdaFormTestCase {
* used to get a lambda form from a method handle.
*/
protected final static Method INTERNAL_FORM;
private static final List<GarbageCollectorMXBean> gcInfo;
private static long gcCount() {
return gcInfo.stream().mapToLong(GarbageCollectorMXBean::getCollectionCount).sum();
}
static {
try {
@ -58,10 +66,15 @@ public abstract class LambdaFormTestCase {
} catch (Exception ex) {
throw new Error("Unexpected exception: ", ex);
}
gcInfo = ManagementFactory.getGarbageCollectorMXBeans();
if (gcInfo.size() == 0) {
throw new Error("No GarbageCollectorMXBeans found.");
}
}
private final TestMethods testMethod;
private long gcCountAtStart;
/**
* Test case constructor. Generates test cases with random method types for
* given methods form {@code j.l.i.MethodHandles} class.
@ -71,12 +84,17 @@ public abstract class LambdaFormTestCase {
*/
protected LambdaFormTestCase(TestMethods testMethod) {
this.testMethod = testMethod;
this.gcCountAtStart = gcCount();
}
public TestMethods getTestMethod() {
return testMethod;
}
protected boolean noGCHappened() {
return gcCount() == gcCountAtStart;
}
/**
* Routine that executes a test case.
*/