From eab2f44b4d02ee5e468a41d50275b6506adf83d6 Mon Sep 17 00:00:00 2001
From: Eric Wong <e@80x24.org>
Date: Sun, 23 Jan 2022 21:00:27 +0000
Subject: use IO#wait_readable consistently

Since Ruby 2.3, it no longer checks FIONREAD, and we require
Ruby 2.3+ nowadays, so drop our IO.select-based workarounds.
---
 bin/dtas-readahead | 16 ++--------------
 1 file changed, 2 insertions(+), 14 deletions(-)

(limited to 'bin')

diff --git a/bin/dtas-readahead b/bin/dtas-readahead
index d3c6e79..75bfbe8 100755
--- a/bin/dtas-readahead
+++ b/bin/dtas-readahead
@@ -28,18 +28,6 @@ null = DTAS.null
 @redir = { err: null, out: null, in: null }.freeze
 require 'pp'
 
-if RUBY_VERSION.to_r >= '2.3'.to_r
-  # Old Rubies did FIONREAD, which breaks on SOCK_SEQPACKET
-  def wait_read(w, timeout)
-    w.to_io.wait_readable(timeout)
-  end
-else
-  def wait_read(w, timeout)
-    r = IO.select([w], nil, nil, timeout)
-    r ? r[0] : nil
-  end
-end
-
 def seek_to_cur_pos(cur_pid, fp)
   cur_fd = []
   fpst = fp.stat
@@ -120,7 +108,7 @@ def do_ra(fp, pos, w)
     len -= n
 
     # stop reading immediately if there's an event
-    if wait_read(w, 0)
+    if w.to_io.wait_readable(0)
       adj = @todo_ra
       pos += size
       break
@@ -220,7 +208,7 @@ begin
     fp.close if fp && !fp.closed?
     fp = timeout = nil
   end
-  r = wait_read(w, timeout)
+  r = w.to_io.wait_readable(timeout)
   p w.res_wait if r
 rescue EOFError
   abort "dtas-player exited"
-- 
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