Crate servo_arc [−] [src]
Fork of Arc for Servo. This has the following advantages over std::sync::Arc:
- We don't waste storage on the weak reference count.
- We don't do extra RMU operations to handle the possibility of weak references.
- We can experiment with arena allocation (todo).
- We can add methods to support our custom use cases 1.
- We have support for dynamically-sized types (see from_header_and_iter).
- We have support for thin arcs to unsized types (see ThinArc).
Structs
| Arc | |
| ArcBorrow |
A "borrowed Arc". This is a pointer to a T that is known to have been allocated within an Arc. |
| HeaderSlice |
Structure to allow Arc-managing some fixed-sized data and a variably-sized slice in a single allocation. |
| HeaderWithLength |
Header data with an inline length. Consumers that use HeaderWithLength as the Header type in HeaderSlice can take advantage of ThinArc. |
| NonZeroPtrMut |
Wrapper type for pointers to get the non-zero optimization. When NonZero/Shared/Unique are stabilized, we should just use Shared here to get the same effect. Gankro is working on this in 1. |
| RawOffsetArc |
An Arc, except it holds a pointer to the T instead of to the entire ArcInner. |
| ThinArc | |
| UniqueArc |
An Arc that is known to be uniquely owned |