Skip to content

Modernize fork hooks to not conflict with other gems #109

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
casperisfine wants to merge 1 commit into
base: master
Choose a base branch
from
Open

Modernize fork hooks to not conflict with other gems #109

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
72 changes: 43 additions & 29 deletions lib/zk/install_fork_hooks.rb
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,37 +1,51 @@
module ::Kernel
def fork_with_zk_hooks(&block)
if block
new_block = proc do
::ZK::ForkHook.fire_after_child_hooks!
block.call
module ZK
module ForkHook
module ModernCoreExt
def _fork
::ZK::ForkHook.fire_prepare_hooks!
pid = super
if pid == 0
::ZK::ForkHook.fire_after_child_hooks!
else
::ZK::ForkHook.fire_after_parent_hooks!
end
pid
end
end

::ZK::ForkHook.fire_prepare_hooks!
fork_without_zk_hooks(&new_block).tap do
::ZK::ForkHook.fire_after_parent_hooks!
end
else
::ZK::ForkHook.fire_prepare_hooks!
if pid = fork_without_zk_hooks
::ZK::ForkHook.fire_after_parent_hooks!
# we're in the parent
return pid
else
# we're in the child
::ZK::ForkHook.fire_after_child_hooks!
return nil
module CoreExt
def fork(*, **)
::ZK::ForkHook.fire_prepare_hooks!
if block_given?
pid = super do
::ZK::ForkHook.fire_after_child_hooks!
yield
end
::ZK::ForkHook.fire_after_parent_hooks!
else
if pid = super
ZK::ForkHook.fire_after_parent_hooks!
else
::ZK::ForkHook.fire_after_child_hooks!
end
end

pid
end
end
end

if defined?(fork_without_zk_hooks)
remove_method :fork
alias fork fork_without_zk_hooks
remove_method :fork_without_zk_hooks
module CoreExtPrivate
include CoreExt
private :fork
end
end

alias fork_without_zk_hooks fork
alias fork fork_with_zk_hooks
module_function :fork
end

if Process.respond_to?(:_fork) # Ruby 3.1+
::Process.singleton_class.prepend(ZK::ForkHook::ModernCoreExt)
elsif Process.respond_to?(:fork)
::Object.prepend(ZK::ForkHook::CoreExtPrivate) if RUBY_VERSION < "3.0"
::Kernel.prepend(ZK::ForkHook::CoreExtPrivate)
::Kernel.singleton_class.prepend(ZK::ForkHook::CoreExt)
::Process.singleton_class.prepend(ZK::ForkHook::CoreExt)
end