Module: Datadog::Profiling::Ext::ExecMonkeyPatch

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

Overview

The profiler gathers data by sending SIGPROF unix signals to Ruby application threads.

When using ‘Kernel#exec` on Linux, it can happen that a signal sent before calling exec arrives after the new process is running, causing it to fail with the `Profiling timer expired` error message. To avoid this, the profiler installs a monkey patch on `Kernel#exec` to stop profiling before actually calling exec. This monkey patch is available for Ruby 2.7+; let us know if you need it on earlier Rubies. For more details see github.com/DataDog/dd-trace-rb/issues/5101 .

Defined Under Namespace

Modules: ObjectMonkeyPatch

Class Method Summary collapse

Class Method Details

.apply! ⇒ Object 



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# File 'lib/datadog/profiling/ext/exec_monkey_patch.rb', line 15

def self.apply!
  ::Object.prepend(ObjectMonkeyPatch)

  true
end