Lock.acquire: def of cswap-bend-cli@0.1.0.0
Import: import cswap-bend-cli@0.1.0.0/lock.bend as Lock
Lines 79-85 of cswap-bend-cli@0.1.0.0/lock.bend: https://jend.leeeet.dev/read.txt?path=cswap-bend-cli@0.1.0.0/lock.bend&start_line=79&end_line=85

import Base
import cswap-bend-cli@0.1.0.0/fs.bend as Fs
import cswap-bend-cli@0.1.0.0/fs/write.bend as FsW

# Take the lock at `path`, waiting up to `timeout_ms`. Done{Some{file}} holds
# it (pass the file to `release`); Done{None} means the wait timed out.
# Creates missing parent directories and truncates the lock file, as the
# reference does.
def acquire(+path: String, timeout_ms: U32) -> IO(Fs.Res(Maybe<&1, File>)):
  IO.bind(Fs.Res(Unit), Fs.Res(Maybe<&1, File>), FsW.mkdir_p(Fs.dirname(path)),
    r => parent.ok(r, timeout_ms, path))

Uses (11):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=File
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=IO
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=IO.bind
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Unit
  https://jend.leeeet.dev/definition.txt?path=cswap-bend-cli@0.1.0.0/fs/write.bend&name=mkdir_p
  https://jend.leeeet.dev/definition.txt?path=cswap-bend-cli@0.1.0.0/fs.bend&name=Res
  https://jend.leeeet.dev/definition.txt?path=cswap-bend-cli@0.1.0.0/fs.bend&name=dirname
  https://jend.leeeet.dev/definition.txt?path=cswap-bend-cli@0.1.0.0/lock.bend&name=parent.ok