dispatchr

My Rust bindings for libdispatch, a.k.a. GCD. This is an alternative to the dispatch crate.

This crate is part of the objr expanded universe universe which provide low-level, zero-cost Rust abstractions for Apple platform features that mimic code from first-party compilers. Distinctive features of this library include:

• Leverages blocksr technology for fast, low-overhead, static compile-time optimizations of dispatch calls.
• Exposes a rich set of datatypes for dispatch_data, including managed, unmanaged, contiguous, and zero-copy-bridged flavors of data
• Binds dispatch_read/write, the defacto API for nonblocking IO on macOS.
  • Notably, the rest of the Rust ecosystem uses some cross-platform API to cover macOS, like poll or kevent. These lack various features and optimizations of the preferred API.
  • In general, Apple implements the cross-platform APIs with about as much care as the developers using them to port cross-platform apps: not enough.
• Binds QoS, which is the solution for task priority and responsive GUI apps on macOS

Status

dispatchr covers large but incomplete portions of the libdispatch API.

• global queues, dispatch_sync
• qos
• popular portions of io: dispatch_read, dispatch_write, dispatch_io_create_with_path
• data
• semaphore
• source (timers only)