Module: Datadog::Profiling::Ext::DirMonkeyPatches

Defined in:
lib/datadog/profiling/ext/dir_monkey_patches.rb

Overview

Ruby versions before 3.4 have bugs in the Dir class implementation, causing issues such as https://github.com/DataDog/dd-trace-rb/issues/3450 . This was fixed upstream in https://bugs.ruby-lang.org/issues/20586 but we use this monkey patch to work around the issue on legacy versions (it gets applied by Datadog::Profiling::Component).

This monkey patch for the Ruby Dir class works around these bugs for affected Ruby versions by temporarily blocking the profiler from interrupting system calls.

A lot of these APIs do very similar things -- they're provided by Ruby as helpers so users don't need to keep reimplementing them but share the same underlying buggy code. And so our monkey patches are a bit repetitive as well. We don't DRY out this file to have minimal overhead.

These monkey patches are applied by the profiler when the "dir_interruption_workaround_enabled" setting is enabled. See the profiling settings for more detail.

Class Method Summary collapse

Class Method Details

.apply! ⇒ Object 



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# File 'lib/datadog/profiling/ext/dir_monkey_patches.rb', line 23

def self.apply!
  ::Dir.singleton_class.prepend(Datadog::Profiling::Ext::DirClassMonkeyPatches)
  ::Dir.prepend(Datadog::Profiling::Ext::DirInstanceMonkeyPatches)

  true
end