[ruby-core:99767] [Ruby master Feature#9420] warn and puts should be atomic
From:
glass.saga@...
Date:
2020-08-29 06:56:18 UTC
List:
ruby-core #99767
Issue #9420 has been updated by Glass_saga (Masaki Matsushita). Status changed from Open to Closed For now, warn and puts already use writev if available. ---------------------------------------- Feature #9420: warn and puts should be atomic https://bugs.ruby-lang.org/issues/9420#change-87279 * Author: normalperson (Eric Wong) * Status: Closed * Priority: Normal * Assignee: Glass_saga (Masaki Matsushita) ---------------------------------------- Since we added use of writev in r44618, we should make warn/puts atomic. It would make development of multiprocess/multithreaded processes easier, I think it was intended to be atomic based on old comments in io.c: ``` - /* - * xxx: use writev to avoid double write if available - * writev may help avoid context switch between "a" and "\n" in - * STDERR.puts "a" [ruby-dev:25080] (rebroken since native threads - * introduced in 1.9) - */ ``` -- https://bugs.ruby-lang.org/ Unsubscribe: <mailto:ruby-core-request@ruby-lang.org?subject=unsubscribe> <http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>