Module: Fontist::Utils::Locking

Included in:
SystemIndex, SystemIndexFontCollection, Cache
Defined in:
lib/fontist/utils/locking.rb

Instance Method Summary collapse

Instance Method Details

#lock(lock_path) ⇒ Object 



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# File 'lib/fontist/utils/locking.rb', line 4

def lock(lock_path)
  File.dirname(lock_path).tap do |dir|
    FileUtils.mkdir_p(dir)
  end

  f = File.open(lock_path, File::CREAT | File::WRONLY)
  raise "Failed to open lock file: #{lock_path}" unless f

  f.flock(File::LOCK_EX)
  yield
ensure
  f&.flock(File::LOCK_UN)
  f&.close
end