Method lock

java/com/facebook/soloader/FileLocker.java:31–33

(File lockFile)

  private final @Nullable FileLock mLock;

  public static FileLocker lock(File lockFile) throws IOException {
    return new FileLocker(lockFile);
  }

  private FileLocker(File lockFile) throws IOException {
    mLockFileOutputStream = new FileOutputStream(lockFile);