| 596 |
|
} |
| 597 |
|
|
| 598 |
|
// Unsafe mechanics |
| 599 |
< |
private static final sun.misc.Unsafe U; |
| 599 |
> |
private static final sun.misc.Unsafe U = sun.misc.Unsafe.getUnsafe(); |
| 600 |
|
private static final long BOUND; |
| 601 |
|
private static final long SLOT; |
| 602 |
|
private static final long MATCH; |
| 604 |
|
private static final int ABASE; |
| 605 |
|
static { |
| 606 |
|
try { |
| 607 |
– |
U = sun.misc.Unsafe.getUnsafe(); |
| 608 |
– |
Class<?> ek = Exchanger.class; |
| 609 |
– |
Class<?> nk = Node.class; |
| 610 |
– |
Class<?> ak = Node[].class; |
| 611 |
– |
Class<?> tk = Thread.class; |
| 607 |
|
BOUND = U.objectFieldOffset |
| 608 |
< |
(ek.getDeclaredField("bound")); |
| 608 |
> |
(Exchanger.class.getDeclaredField("bound")); |
| 609 |
|
SLOT = U.objectFieldOffset |
| 610 |
< |
(ek.getDeclaredField("slot")); |
| 610 |
> |
(Exchanger.class.getDeclaredField("slot")); |
| 611 |
> |
|
| 612 |
|
MATCH = U.objectFieldOffset |
| 613 |
< |
(nk.getDeclaredField("match")); |
| 613 |
> |
(Node.class.getDeclaredField("match")); |
| 614 |
> |
|
| 615 |
|
BLOCKER = U.objectFieldOffset |
| 616 |
< |
(tk.getDeclaredField("parkBlocker")); |
| 617 |
< |
int scale = U.arrayIndexScale(ak); |
| 616 |
> |
(Thread.class.getDeclaredField("parkBlocker")); |
| 617 |
> |
|
| 618 |
> |
int scale = U.arrayIndexScale(Node[].class); |
| 619 |
|
if ((scale & (scale - 1)) != 0 || scale > (1 << ASHIFT)) |
| 620 |
|
throw new Error("Unsupported array scale"); |
| 621 |
|
// ABASE absorbs padding in front of element 0 |
| 622 |
< |
ABASE = U.arrayBaseOffset(ak) + (1 << ASHIFT); |
| 622 |
> |
ABASE = U.arrayBaseOffset(Node[].class) + (1 << ASHIFT); |
| 623 |
|
} catch (ReflectiveOperationException e) { |
| 624 |
|
throw new Error(e); |
| 625 |
|
} |
