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From: Eric Wong <e@80x24.org>
To: <dtas-all@nongnu.org>
Subject: [PATCH] dtas-readahead: avoid polling on pause
Date: Wed, 23 Sep 2015 20:15:24 +0000	[thread overview]
Message-ID: <20150923201524.9734-1-e@80x24.org> (raw)

When a player is paused with nothing player, we will not waste CPU
time polling for the player to become available.  It is wasteful
of processing power and battery life.
---
 bin/dtas-readahead | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/bin/dtas-readahead b/bin/dtas-readahead
index f02bc35..798a5b4 100644
--- a/bin/dtas-readahead
+++ b/bin/dtas-readahead
@@ -190,12 +190,16 @@ begin
     end
     idx or break
     cur = YAML.load(c.req('current'))
-    cur['current'] or break
+    current = cur['current'] or break
+  end
+  if current
+    elapsed = DTAS.now - t0
+    p [:elapsed, elapsed]
+    timeout = 5 - elapsed
+    timeout = 0 if timeout < 0
+  else
+    timeout = nil
   end
-  elapsed = DTAS.now - t0
-  p [:elapsed, elapsed]
-  timeout = 5 - elapsed
-  timeout = 0 if timeout < 0
   r = wait_read(w, timeout)
   p w.res_wait if r
 rescue EOFError
-- 
EW



                 reply	other threads:[~2015-09-23 20:15 UTC|newest]

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