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Calvin Cheung 2016-04-07 00:25:46 +02:00
commit 5e6ae86ef2
1 changed files with 7 additions and 8 deletions
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15
hotspot/test/gc/g1/humongousObjects/TestHumongousThreshold.java
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@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 2015,2016 Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* *
* This code is free software; you can redistribute it and/or modify it * This code is free software; you can redistribute it and/or modify it
@ -70,7 +70,7 @@ public class TestHumongousThreshold {
private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox(); private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
private static final int REGION_SIZE = WHITE_BOX.g1RegionSize(); private static final int REGION_SIZE = WHITE_BOX.g1RegionSize();
private static final int MAX_CONTINUOUS_SIZE_CHECK = 129; private static final int MAX_CONTINUOUS_SIZE_CHECK = 129;
private static final int NON_HUMONGOUS_DIVIDER = 10; private static final int NON_HUMONGOUS_STEPS = 10;
/** /**
* The method allocates byte[] with specified size and checks that: * The method allocates byte[] with specified size and checks that:
@ -84,7 +84,7 @@ public class TestHumongousThreshold {
* @return allocated byte array * @return allocated byte array
*/ */
private static byte[] allocateAndCheck(int arraySize, boolean expectedHumongous) { private static void allocateAndCheck(int arraySize, boolean expectedHumongous) {
byte[] storage = new byte[arraySize]; byte[] storage = new byte[arraySize];
long objectSize = WHITE_BOX.getObjectSize(storage); long objectSize = WHITE_BOX.getObjectSize(storage);
boolean shouldBeHumongous = objectSize > (REGION_SIZE / 2); boolean shouldBeHumongous = objectSize > (REGION_SIZE / 2);
@ -98,7 +98,6 @@ public class TestHumongousThreshold {
"Object should be allocated as " + (shouldBeHumongous ? "humongous" "Object should be allocated as " + (shouldBeHumongous ? "humongous"
: "non-humongous") + " but it wasn't; Allocation size = " + arraySize + "; Object size = " : "non-humongous") + " but it wasn't; Allocation size = " + arraySize + "; Object size = "
+ objectSize + "; region size = " + REGION_SIZE); + objectSize + "; region size = " + REGION_SIZE);
return storage;
} }
public static void main(String[] args) { public static void main(String[] args) {
@ -108,7 +107,7 @@ public class TestHumongousThreshold {
int maxByteArrayNonHumongousSize = (REGION_SIZE / 2) - byteArrayMemoryOverhead; int maxByteArrayNonHumongousSize = (REGION_SIZE / 2) - byteArrayMemoryOverhead;
// Increment for non-humongous testing // Increment for non-humongous testing
int nonHumongousStep = maxByteArrayNonHumongousSize / NON_HUMONGOUS_DIVIDER; int nonHumongousStep = maxByteArrayNonHumongousSize / NON_HUMONGOUS_STEPS;
// Maximum byte[] that takes one region // Maximum byte[] that takes one region
int maxByteArrayOneRegionSize = REGION_SIZE - byteArrayMemoryOverhead; int maxByteArrayOneRegionSize = REGION_SIZE - byteArrayMemoryOverhead;
@ -131,10 +130,10 @@ public class TestHumongousThreshold {
allocateAndCheck(i, false); allocateAndCheck(i, false);
} }
// Testing allocations with byte[] with length from 0 to nonHumongousStep * NON_HUMONGOUS_DIVIDER // Testing allocations with byte[] with length from 0 to nonHumongousStep * NON_HUMONGOUS_STEPS
System.out.format("Testing allocations with byte[] with length from 0 to %d with step %d%n", System.out.format("Testing allocations with byte[] with length from 0 to %d with step %d%n",
nonHumongousStep * NON_HUMONGOUS_DIVIDER, nonHumongousStep); nonHumongousStep * NON_HUMONGOUS_STEPS, nonHumongousStep);
for (int i = 0; i < NON_HUMONGOUS_DIVIDER; ++i) { for (int i = 0; i < NON_HUMONGOUS_STEPS; ++i) {
allocateAndCheck(i * nonHumongousStep, false); allocateAndCheck(i * nonHumongousStep, false);
} }