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8241500: FieldLayout/OldLayoutCheck.java fails in 32-bit VMs

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Reviewed-by: fparain, dholmes
This commit is contained in:
Aleksey Shipilev 2020-03-25 07:58:17 +01:00
parent 7753422909
commit 27ef185bae
1 changed files with 8 additions and 2 deletions

10
test/hotspot/jtreg/runtime/FieldLayout/OldLayoutCheck.java

@ -47,6 +47,7 @@ import java.util.Comparator;
import jdk.internal.misc.Unsafe;
import jdk.test.lib.Asserts;
import jdk.test.lib.Platform;
public class OldLayoutCheck {
@ -55,6 +56,11 @@ public class OldLayoutCheck {
public int i;
}
// 32-bit VMs: @0: 8 byte header, @8: long field, @16: int field
// 64-bit VMs: @0: 12 byte header, @12: int field, @16: long field
static final long INT_OFFSET = Platform.is64bit() ? 12L : 16L;
static final long LONG_OFFSET = Platform.is64bit() ? 16L : 8L;
static public void main(String[] args) {
Unsafe unsafe = Unsafe.getUnsafe();
Class c = LIClass.class;
@ -62,9 +68,9 @@ public class OldLayoutCheck {
for (int i = 0; i < fields.length; i++) {
long offset = unsafe.objectFieldOffset(fields[i]);
if (fields[i].getType() == int.class) {
Asserts.assertEquals(offset, 12L, "Misplaced int field");
Asserts.assertEquals(offset, INT_OFFSET, "Misplaced int field");
} else if (fields[i].getType() == long.class) {
Asserts.assertEquals(offset, 16L, "Misplaced long field");
Asserts.assertEquals(offset, LONG_OFFSET, "Misplaced long field");
} else {
Asserts.fail("Unexpected field type");
}