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Versions: 22
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Stored size: 1.85 KB
Contents
require_relative '../../core/utils/only_once'
require_relative '../ext/forking'
module Datadog
module Profiling
module Tasks
# Takes care of loading our extensions/monkey patches to handle fork() and validating if CPU-time profiling is usable
class Setup
ACTIVATE_EXTENSIONS_ONLY_ONCE = Core::Utils::OnlyOnce.new
def run
ACTIVATE_EXTENSIONS_ONLY_ONCE.run do
begin
activate_forking_extensions
setup_at_fork_hooks
rescue StandardError, ScriptError => e
Datadog.logger.warn do
"Profiler extensions unavailable. Cause: #{e.class.name} #{e.message} " \
"Location: #{Array(e.backtrace).first}"
end
end
end
end
private
def activate_forking_extensions
if Ext::Forking.supported?
Ext::Forking.apply!
elsif Datadog.configuration.profiling.enabled
Datadog.logger.debug('Profiler forking extensions skipped; forking not supported.')
end
rescue StandardError, ScriptError => e
Datadog.logger.warn do
"Profiler forking extensions unavailable. Cause: #{e.class.name} #{e.message} " \
"Location: #{Array(e.backtrace).first}"
end
end
def setup_at_fork_hooks
if Process.respond_to?(:at_fork)
Process.at_fork(:child) do
begin
# Restart profiler, if enabled
Profiling.start_if_enabled
rescue StandardError => e
Datadog.logger.warn do
"Error during post-fork hooks. Cause: #{e.class.name} #{e.message} " \
"Location: #{Array(e.backtrace).first}"
end
end
end
end
end
end
end
end
end
Version data entries
22 entries across 22 versions & 1 rubygems