Crate coarsetime

A crate to make time measurements that focuses on speed.

This crate is a partial replacement for the Time and Duration structures from the standard library, with the following differences:

• Speed is privileged over accuracy. In particular, CLOCK_MONOTONIC_COARSE is used to retrieve the clock value on Linux systems, and transformations avoid operations that can be slow on non-Intel systems.
• The number of system calls can be kept to a minimum. The “most recent timestamp” is always kept in memory. It can be read with just a load operation, and can be updated only as frequently as necessary.

Installation

coarsetime is available on crates.io and works on Rust stable, beta, and nightly.

Windows and Unix-like systems are supported.

Structs

• Clock
  System time
• Duration
  A duration type to represent an approximate span of time
• Instant
  A measurement of a monotonically increasing clock. Opaque and useful only with Duration. Resulting durations are actual durations; they do not get affected by clock adjustments, leap seconds, or similar. In order to get a measurement of the wall clock, use Date instead.
• Updater
  A service to periodically call Instant::update()

Type Aliases

• UnixTimeStamp
  Alias for Duration.