Add FileSystem.lock (#1869) #1677
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This commit introduces file locking capabilities to the Okio FileSystem.
For discussion of #1464
TODO
proper-lockfile
?Key changes:
FileSystem.lock()
method to acquire exclusive or shared locks on files.FileLock
interface for managing lock state and lifecycle.java.nio.channels.FileChannel.lock()
.FakeFileSystemLock
for testing purposes.FileSystem
throwIOException
as locking is not supported on these platforms by default.NioFileSystemWrappingFileSystem
andJvmSystemFileSystem
to delegate to the new locking mechanism.