Sha256: 12b06509230a45667b7efafee77c4c227aa4a9744c0ea7f1a1f80cc0118731b9
Contents?: true
Size: 1.61 KB
Versions: 20
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Stored size: 1.61 KB
Contents
# frozen_string_literal: true
module ActiveSupport
module ForkTracker # :nodoc:
module ModernCoreExt
def _fork
pid = super
if pid == 0
ForkTracker.after_fork_callback
end
pid
end
end
module CoreExt
def fork(...)
if block_given?
super do
ForkTracker.check!
yield
end
else
unless pid = super
ForkTracker.check!
end
pid
end
end
end
module CoreExtPrivate
include CoreExt
private :fork
end
@pid = Process.pid
@callbacks = []
class << self
def after_fork_callback
new_pid = Process.pid
if @pid != new_pid
@callbacks.each(&:call)
@pid = new_pid
end
end
if Process.respond_to?(:_fork) # Ruby 3.1+
def check!
# We trust the `_fork` callback
end
else
alias_method :check!, :after_fork_callback
end
def hook!
if Process.respond_to?(:_fork) # Ruby 3.1+
::Process.singleton_class.prepend(ModernCoreExt)
elsif Process.respond_to?(:fork)
::Object.prepend(CoreExtPrivate) if RUBY_VERSION < "3.0"
::Kernel.prepend(CoreExtPrivate)
::Kernel.singleton_class.prepend(CoreExt)
::Process.singleton_class.prepend(CoreExt)
end
end
def after_fork(&block)
@callbacks << block
block
end
def unregister(callback)
@callbacks.delete(callback)
end
end
end
end
ActiveSupport::ForkTracker.hook!
Version data entries
20 entries across 20 versions & 6 rubygems