Struct mmtk::plan::barriers::NoBarrier

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pub struct NoBarrier;
Expand description

Empty barrier implementation. For GCs that do not need any barriers

Note that since NoBarrier noes nothing but the object field write itself, it has no slow-path semantics (i.e. an no-op slow-path).

Trait Implementations§

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impl<VM: VMBinding> Barrier<VM> for NoBarrier

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fn flush(&mut self)

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fn object_reference_write( &mut self, src: ObjectReference, slot: VM::VMSlot, target: ObjectReference )

Subsuming barrier for object reference write
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fn object_reference_write_pre( &mut self, _src: ObjectReference, _slot: VM::VMSlot, _target: Option<ObjectReference> )

Full pre-barrier for object reference write
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fn object_reference_write_post( &mut self, _src: ObjectReference, _slot: VM::VMSlot, _target: Option<ObjectReference> )

Full post-barrier for object reference write
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fn object_reference_write_slow( &mut self, _src: ObjectReference, _slot: VM::VMSlot, _target: Option<ObjectReference> )

Object reference write slow-path call. This can be called either before or after the store, depend on the concrete barrier implementation.
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fn memory_region_copy(&mut self, src: VM::VMMemorySlice, dst: VM::VMMemorySlice)

Subsuming barrier for array copy
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fn memory_region_copy_pre( &mut self, _src: VM::VMMemorySlice, _dst: VM::VMMemorySlice )

Full pre-barrier for array copy
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fn memory_region_copy_post( &mut self, _src: VM::VMMemorySlice, _dst: VM::VMMemorySlice )

Full post-barrier for array copy
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fn object_probable_write(&mut self, _obj: ObjectReference)

A pre-barrier indicating that some fields of the object will probably be modified soon. Specifically, the caller should ensure that: * The barrier must called before any field modification. * Some fields (unknown at the time of calling this barrier) might be modified soon, without a write barrier. * There are no safepoints between the barrier call and the field writes. Read more

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> Downcast for T
where T: Any,

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fn into_any(self: Box<T>) -> Box<dyn Any>

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.
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Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.
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Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
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Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.
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where T: Any + Send + Sync,

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fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Send + Sync>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.