LockFile::LockFile(const boost::filesystem::path& path)
: path_(path) {
  auto new_path = path_.parent_path() / ".lockfile";
  try {
    boost::filesystem::rename(path_ / "lockfile", new_path);
  } catch (boost::filesystem::filesystem_error& e) {
    throw BadLockFile();
  }
}
 
LockFile::~LockFile() {
  auto new_path = path_.parent_path() / "lockfile";
  try {
    boost::filesystem::rename(path_ / ".lockfile", new_path);
  } catch (boost::filesystem::filesystem_error&) {
  }
}

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