Module ros2_client::steady_time

Steady time has an arbitrary origin, but is guaranteed to run monotonically (i.e. non-decreasing), regardless of clock corrections or timezones.

Note Steady time is not actually steady in the sense that the underlying clock would always run. Steady time clock might be paused e.g. because of operating system sleep modes, hypervisors, or other infrastructure below this library. This module is called steady_time only to better conform to ROS 2 naming.

The current implementation is based on std::time::Instant. Because of this, there is no directo conversion to/from nanoseconds, or other time types.

Steady time should be used only when it is necessary, e.g. because of interacting with hardware. Steady time cannot be simulated. Use ROS time instead, whenever possible.

Structs

• NegativetimeDiffError
• Time
  Monotonic time in nanoseconds
• TimeDiff
  Time difference can be negative, unlike std::time::Duration