class PG::Connection

Any issues with the default setting of async_api=true should be reported to the maintainers instead.
Do not use this method in production code.
_PLEASE_ _NOTE_: This method is not part of the public API and is for debug and development use only.

pg-1.3.0+ defaults to libpq's async API for all possibly blocking methods.
pg-1.1.0+ defaults to libpq's async API for query related blocking methods.

sets an alias from #exec to #sync_exec, #reset to #sync_reset and so on.
PG::Connection.async_api = false

It sets an alias from #exec to #async_exec, #reset to #async_reset and so on.
this is the default.
PG::Connection.async_api = true

Switch between sync and async libpq API.

def async_api=(enable)
	self.async_send_api = enable
	REDIRECT_METHODS.each do |ali, (async, sync)|
		remove_method(ali) if method_defined?(ali)
		alias_method( ali, enable ? async : sync )
	end
	REDIRECT_CLASS_METHODS.each do |ali, (async, sync)|
		singleton_class.remove_method(ali) if method_defined?(ali)
		singleton_class.alias_method(ali, enable ? async : sync )
	end
end