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Type:
Bug
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Resolution: Fixed
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Priority:
P4
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Affects Version/s: repo-valhalla
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Component/s: tools
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generic
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generic
From http://cr.openjdk.java.net/~briangoetz/valhalla/sov/02-object-model.html
To distinguish between inline and identity classes at compile time and runtime, we introduce a pair of restricted interfaces: IdentityObject and InlineObject. Inline classes implicitly implement InlineObject; identity classes implicitly implement IdentityObject. (It is an error to attempt to implement both.) This enables us to write code that dynamically tests for object identity before performing identity-sensitive operations:
if (x instanceof IdentityObject)) {
synchronized(x) { ... }
}
as well as statically reflecting the requirement for identity in types (and generic type bounds):
static void runWithLock(IdentityObject lock, Runnable r) {
synchronized (lock) {
r.run();
}
}
This ticket is introduce the new top interfaces and wire them in
To distinguish between inline and identity classes at compile time and runtime, we introduce a pair of restricted interfaces: IdentityObject and InlineObject. Inline classes implicitly implement InlineObject; identity classes implicitly implement IdentityObject. (It is an error to attempt to implement both.) This enables us to write code that dynamically tests for object identity before performing identity-sensitive operations:
if (x instanceof IdentityObject)) {
synchronized(x) { ... }
}
as well as statically reflecting the requirement for identity in types (and generic type bounds):
static void runWithLock(IdentityObject lock, Runnable r) {
synchronized (lock) {
r.run();
}
}
This ticket is introduce the new top interfaces and wire them in
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- Resolved
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- Closed
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- Resolved
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- Closed
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