Crate waitpid_any

waitpid(2) but for arbitrary non-child processes.

waitpid(2) can only be used to wait for direct child processes, or it fails immediately.

This crate provides a extension to wait for the exit of any process, not necessarily child processes. Due to platform limitations, the exit reason and status codes still cannot be retrieved.

Implementation details

• On Linux, pidfd_open(2) and poll(2) are used. Thus only Linux 5.3 or later is supported.
• On Windows, OpenProcess and WaitForSingleObject are used.
• On *BSD, including macOS, kqueue(2) is used.
• Other platforms are not supported currently.

Structs

• WaitHandle
  A locked handle to a process.