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Contents
# frozen_string_literal: true
module Datadog
module Kit
# This helper is used to enable core dumps for the current Ruby app. This is useful when debugging native-level
# crashes.
#
# It can be enabled simply by adding `require 'datadog/kit/enable_core_dumps'` to start of the app.
module EnableCoreDumps
def self.call
current_size, maximum_size = Process.getrlimit(:CORE)
core_pattern =
begin
File.read('/proc/sys/kernel/core_pattern').strip
rescue
'(Could not open /proc/sys/kernel/core_pattern)'
end
if maximum_size <= 0
Kernel.warn("[ddtrace] Could not enable core dumps on crash, maximum size is #{maximum_size} (disabled).")
return
elsif maximum_size == current_size
Kernel.warn('[ddtrace] Core dumps already enabled, nothing to do!')
return
end
begin
Process.setrlimit(:CORE, maximum_size)
rescue => e
Kernel.warn(
"[ddtrace] Failed to enable core dumps. Cause: #{e.class.name} #{e.message} " \
"Location: #{Array(e.backtrace).first}"
)
return
end
if current_size == 0
Kernel.warn("[ddtrace] Enabled core dumps. Maximum size: #{maximum_size} Output pattern: '#{core_pattern}'")
else
Kernel.warn(
"[ddtrace] Raised core dump limit. Old size: #{current_size} " \
"Maximum size: #{maximum_size} Output pattern: '#{core_pattern}'"
)
end
end
end
end
end
Datadog::Kit::EnableCoreDumps.call
Version data entries
15 entries across 15 versions & 1 rubygems