instance method `lock_file`

Ruby on Rails 8.0.4

Since v5.2.8.1 Private

Available in: v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

lock_file(file_name, &block)

Lock a file for a block so only one process can modify it at a time.

Parameters

file_name req
block block

Source

# File activesupport/lib/active_support/cache/file_store.rb, line 148
        def lock_file(file_name, &block)
          if File.exist?(file_name)
            File.open(file_name, "r+") do |f|
              f.flock File::LOCK_EX
              yield
            ensure
              f.flock File::LOCK_UN
            end
          else
            yield
          end
        end

Defined in activesupport/lib/active_support/cache/file_store.rb line 148 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveSupport::Cache::FileStore

Signature

Parameters