GPL-2.0-or-later AND BSD-3-Clause licensed
Maintained by
Oleg Grenrus This version can be pinned in stack with:lukko-0.1.1.3@sha256:9ab54ee4f80bbd8a3fddd639ea142b7039ee2deb27f7df031a93de1819e34146,4584
Module documentation for 0.1.1.3
This package provides access to platform dependent file locking APIs:
Open file descriptor locking on Linux (Lukko.OFD
)
BSD-style flock(2)
locks on UNIX platforms (Lukko.FLock
)
Windows locking via LockFileEx (Lukko.Windows
)
No-op locking, which throws exceptions (Lukko.NoOp
)
Lukko
module exports the best option for the target platform with uniform API.
There are alternative file locking packages:
GHC.IO.Handle.Lock
in base >= 4.10
is good enough for most use cases.
However, uses only Handle
s so these locks cannot be used for intra-process locking.
(You should use e.g. MVar
in addition).
filelock doesn't support OFD locking.
Lukko means lock in Finnish.
Submodules Lukko.OFD
, Lukko.Windows
etc are available based on following conditions.
if os(windows)
cpp-options: -DHAS_WINDOWS_LOCK
elif (os(linux) && flag(ofd-locking))
cpp-options: -DHAS_OFD_LOCKING
cpp-options: -DHAS_FLOCK
elif !(os(solaris) || os(aix))
cpp-options: -DHAS_FLOCK
Lukko.FLock
is available on not (Windows or Solaris or AIX).
Lukko.NoOp
is always available.
0.1.1.3
Use CApiFFI
to call varargs C functions.
Define let alignment
only when needed.
0.1.1.2
Make Win32 code more idiomatic
0.1.1.1
0.1.1
Add Setup.hs
to sdist
Add type-level FileLockingSupported
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│ Originally developed by
FP Complete