[PROTON-752] Ruby: Cproton calls don't unlock the GIL for blocking / long-running operations

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: proton-0.8
• Fix Version/s: proton-0.9
• Component/s: ruby-binding
• Assignee: Darryl Pierce
• Reporter: Dominic Evans
• Created: 19/Nov/14 13:57
• Updated: 07/Jan/16 12:13
• Resolved: 08/Dec/14 14:03

Description

Currently the I/O-style calls to the Cproton methods don't unlock the Ruby GIL, impacting performance as other Threads could be given time on the interpreter whilst the extension code is running.

Depending on Ruby version this is simply a matter of wrapping the calls in rb_thread_call_without_gvl (Ruby 2.x +) or rb_thread_blocking_region (Ruby 1.9.x). On Ruby 1.8 I'm not sure if you can enable this, but its my understanding that RHEL requires continued support for 1.8, so some #define work would be needed to perform a no-op on that version.