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import jdk.test.lib.Platform;
import jdk.test.whitebox.WhiteBox;
public class GetObjectSizeIntrinsicsTest extends ASimpleInstrumentationTestCase {
+ private static final boolean COMPACT_HEADERS = Platform.is64bit() && WhiteBox.getWhiteBox().getBooleanVMFlag("UseCompactObjectHeaders");
static final Boolean COMPRESSED_OOPS = WhiteBox.getWhiteBox().getBooleanVMFlag("UseCompressedOops");
static final long REF_SIZE = (COMPRESSED_OOPS == null || COMPRESSED_OOPS == true) ? 4 : 8;
static final Long align = WhiteBox.getWhiteBox().getIntVMFlag("ObjectAlignmentInBytes");
static final int OBJ_ALIGN = (align == null ? 8 : align.intValue());
// These should overflow 4G size boundary
static final int LARGE_INT_ARRAY_SIZE = 1024*1024*1024 + 1024;
static final int LARGE_OBJ_ARRAY_SIZE = (4096/(int)REF_SIZE)*1024*1024 + 1024;
+ static final boolean CCP = WhiteBox.getWhiteBox().getBooleanVMFlag("UseCompressedClassPointers");
+ static final int ARRAY_HEADER_SIZE = CCP ? 16 : (Platform.is64bit() ? 20 : 16);
+
final String mode;
public GetObjectSizeIntrinsicsTest(String name, String mode) {
super(name);
this.mode = mode;
private static long roundUp(long v, long a) {
return (v + a - 1) / a * a;
}
private void testSize_newObject() {
! long expected = roundUp(Platform.is64bit() ? 16 : 8, OBJ_ALIGN);
for (int c = 0; c < ITERS; c++) {
assertEquals(expected, fInst.getObjectSize(new Object()));
}
}
private void testSize_localObject() {
! long expected = roundUp(Platform.is64bit() ? 16 : 8, OBJ_ALIGN);
Object o = new Object();
for (int c = 0; c < ITERS; c++) {
assertEquals(expected, fInst.getObjectSize(o));
}
}
static Object staticO = new Object();
private void testSize_fieldObject() {
! long expected = roundUp(Platform.is64bit() ? 16 : 8, OBJ_ALIGN);
for (int c = 0; c < ITERS; c++) {
assertEquals(expected, fInst.getObjectSize(staticO));
}
}
private void testSize_newSmallIntArray() {
! long expected = roundUp(4L*SMALL_ARRAY_SIZE + 16, OBJ_ALIGN);
for (int c = 0; c < ITERS; c++) {
assertEquals(expected, fInst.getObjectSize(new int[SMALL_ARRAY_SIZE]));
}
}
private void testSize_localSmallIntArray() {
int[] arr = new int[SMALL_ARRAY_SIZE];
! long expected = roundUp(4L*SMALL_ARRAY_SIZE + 16, OBJ_ALIGN);
for (int c = 0; c < ITERS; c++) {
assertEquals(expected, fInst.getObjectSize(arr));
}
}
static int[] smallArr = new int[SMALL_ARRAY_SIZE];
private void testSize_fieldSmallIntArray() {
! long expected = roundUp(4L*SMALL_ARRAY_SIZE + 16, OBJ_ALIGN);
for (int c = 0; c < ITERS; c++) {
assertEquals(expected, fInst.getObjectSize(smallArr));
}
}
private void testSize_newSmallObjArray() {
! long expected = roundUp(REF_SIZE*SMALL_ARRAY_SIZE + 16, OBJ_ALIGN);
for (int c = 0; c < ITERS; c++) {
assertEquals(expected, fInst.getObjectSize(new Object[SMALL_ARRAY_SIZE]));
}
}
private void testSize_localSmallObjArray() {
Object[] arr = new Object[SMALL_ARRAY_SIZE];
! long expected = roundUp(REF_SIZE*SMALL_ARRAY_SIZE + 16, OBJ_ALIGN);
for (int c = 0; c < ITERS; c++) {
assertEquals(expected, fInst.getObjectSize(arr));
}
}
static Object[] smallObjArr = new Object[SMALL_ARRAY_SIZE];
private void testSize_fieldSmallObjArray() {
! long expected = roundUp(REF_SIZE*SMALL_ARRAY_SIZE + 16, OBJ_ALIGN);
for (int c = 0; c < ITERS; c++) {
assertEquals(expected, fInst.getObjectSize(smallObjArr));
}
}
private void testSize_localLargeIntArray() {
int[] arr = new int[LARGE_INT_ARRAY_SIZE];
! long expected = roundUp(4L*LARGE_INT_ARRAY_SIZE + 16, OBJ_ALIGN);
for (int c = 0; c < ITERS; c++) {
assertEquals(expected, fInst.getObjectSize(arr));
}
}
private void testSize_localLargeObjArray() {
Object[] arr = new Object[LARGE_OBJ_ARRAY_SIZE];
! long expected = roundUp(REF_SIZE*LARGE_OBJ_ARRAY_SIZE + 16, OBJ_ALIGN);
for (int c = 0; c < ITERS; c++) {
assertEquals(expected, fInst.getObjectSize(arr));
}
}
private static long roundUp(long v, long a) {
return (v + a - 1) / a * a;
}
+ private static long expectedSmallObjSize() {
+ long size;
+ if (!Platform.is64bit() || COMPACT_HEADERS) {
+ size = 8;
+ } else {
+ size = 16;
+ }
+ return roundUp(size, OBJ_ALIGN);
+ }
+
private void testSize_newObject() {
! long expected = expectedSmallObjSize();
for (int c = 0; c < ITERS; c++) {
assertEquals(expected, fInst.getObjectSize(new Object()));
}
}
private void testSize_localObject() {
! long expected = expectedSmallObjSize();
Object o = new Object();
for (int c = 0; c < ITERS; c++) {
assertEquals(expected, fInst.getObjectSize(o));
}
}
static Object staticO = new Object();
private void testSize_fieldObject() {
! long expected = expectedSmallObjSize();
for (int c = 0; c < ITERS; c++) {
assertEquals(expected, fInst.getObjectSize(staticO));
}
}
private void testSize_newSmallIntArray() {
! long expected = roundUp(4L*SMALL_ARRAY_SIZE + ARRAY_HEADER_SIZE, OBJ_ALIGN);
for (int c = 0; c < ITERS; c++) {
assertEquals(expected, fInst.getObjectSize(new int[SMALL_ARRAY_SIZE]));
}
}
private void testSize_localSmallIntArray() {
int[] arr = new int[SMALL_ARRAY_SIZE];
! long expected = roundUp(4L*SMALL_ARRAY_SIZE + ARRAY_HEADER_SIZE, OBJ_ALIGN);
for (int c = 0; c < ITERS; c++) {
assertEquals(expected, fInst.getObjectSize(arr));
}
}
static int[] smallArr = new int[SMALL_ARRAY_SIZE];
private void testSize_fieldSmallIntArray() {
! long expected = roundUp(4L*SMALL_ARRAY_SIZE + ARRAY_HEADER_SIZE, OBJ_ALIGN);
for (int c = 0; c < ITERS; c++) {
assertEquals(expected, fInst.getObjectSize(smallArr));
}
}
private void testSize_newSmallObjArray() {
! long expected = roundUp(REF_SIZE*SMALL_ARRAY_SIZE + ARRAY_HEADER_SIZE, OBJ_ALIGN);
for (int c = 0; c < ITERS; c++) {
assertEquals(expected, fInst.getObjectSize(new Object[SMALL_ARRAY_SIZE]));
}
}
private void testSize_localSmallObjArray() {
Object[] arr = new Object[SMALL_ARRAY_SIZE];
! long expected = roundUp(REF_SIZE*SMALL_ARRAY_SIZE + ARRAY_HEADER_SIZE, OBJ_ALIGN);
for (int c = 0; c < ITERS; c++) {
assertEquals(expected, fInst.getObjectSize(arr));
}
}
static Object[] smallObjArr = new Object[SMALL_ARRAY_SIZE];
private void testSize_fieldSmallObjArray() {
! long expected = roundUp(REF_SIZE*SMALL_ARRAY_SIZE + ARRAY_HEADER_SIZE, OBJ_ALIGN);
for (int c = 0; c < ITERS; c++) {
assertEquals(expected, fInst.getObjectSize(smallObjArr));
}
}
private void testSize_localLargeIntArray() {
int[] arr = new int[LARGE_INT_ARRAY_SIZE];
! long expected = roundUp(4L*LARGE_INT_ARRAY_SIZE + ARRAY_HEADER_SIZE, OBJ_ALIGN);
for (int c = 0; c < ITERS; c++) {
assertEquals(expected, fInst.getObjectSize(arr));
}
}
private void testSize_localLargeObjArray() {
Object[] arr = new Object[LARGE_OBJ_ARRAY_SIZE];
! long expected = roundUp(REF_SIZE*LARGE_OBJ_ARRAY_SIZE + ARRAY_HEADER_SIZE, OBJ_ALIGN);
for (int c = 0; c < ITERS; c++) {
assertEquals(expected, fInst.getObjectSize(arr));
}
}
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