copy_file_range: move wrapper to Ruby for keyword arg handling

Keyword args allows for a smaller interface for common use,
while retaining the capability to use offsets for both input and
output.  The current (2.4) Ruby C API for keyword args is slow
and creates too many garbage objects.  As with our splice
wrapper, use a pure Ruby wrapper around an internal C function.

1 files changed, 3 insertions, 2 deletions

diff --git a/lib/sleepy_penguin.rb b/lib/sleepy_penguin.rb
index 63f293d..07c431b 100644
--- a/lib/sleepy_penguin.rb
+++ b/lib/sleepy_penguin.rb
@@ -16,6 +16,7 @@ if defined?(SleepyPenguin::Inotify) &&
   end
 end
 
-if SleepyPenguin.respond_to?(:__splice) || SleepyPenguin.respond_to?(:__tee)
-  require_relative 'sleepy_penguin/splice'
+module SleepyPenguin
+  require_relative 'sleepy_penguin/splice' if respond_to?(:__splice)
+  require_relative 'sleepy_penguin/cfr' if respond_to?(:__cfr)
 end