Crate gj [−] [src]

A library providing high-level abstractions for event loop concurrency, heavily borrowing ideas from KJ. Allows for coordination of asynchronous tasks using promises as a basic building block.

Modules

io	Asynchronous input and output.

Macros

pry!	Like `try!()`, but for functions that return a `Promise<T, E>` rather than a `Result<T, E>`.

Structs

EventLoop	A queue of events being executed in a loop on a single thread.
ForkedPromise	The result of Promise::fork(). Allows branches to be created.
Promise	A computation that might eventually resolve to a value of type `T` or to an error of type `E`.
PromiseFulfiller	A handle that can be used to fulfill or reject a promise. If you think of a promise as the receiving end of a oneshot channel, then this is the sending end.
TaskSet	Holds a collection of `Promise<T, E>`s and ensures that each executes to completion. Destroying a TaskSet automatically cancels all of its unfinished promises.
WaitScope	A scope in which asynchronous programming can occur. Corresponds to the top level scope of some event loop.

Traits

FulfillerDropped	Specifies an error to generate when a PromiseFulfiller is dropped.
TaskReaper	Callbacks to be invoked when a task in a `TaskSet` finishes. You are required to implement at least the failure case.