From dca111519627813608807b60b98f3d5133880120 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Mon, 8 Apr 2013 22:31:51 +0200
Subject: StateFile: schedule timer only after a change

Save the state file 2 minutes after the last change.  This reduces the
disruptions by an idle MPD, and MPD can be paged out permanently until
it is used.
---
 src/StateFile.cxx | 21 ++++++---------------
 1 file changed, 6 insertions(+), 15 deletions(-)

(limited to 'src/StateFile.cxx')

diff --git a/src/StateFile.cxx b/src/StateFile.cxx
index 301ae9abb..ae782335d 100644
--- a/src/StateFile.cxx
+++ b/src/StateFile.cxx
@@ -41,7 +41,6 @@ StateFile::StateFile(Path &&_path, const char *_path_utf8,
 	 prev_volume_version(0), prev_output_version(0),
 	 prev_playlist_version(0)
 {
-	ScheduleSeconds(5 * 60);
 }
 
 void
@@ -110,24 +109,16 @@ StateFile::Read()
 	RememberVersions();
 }
 
-inline void
-StateFile::AutoWrite()
+void
+StateFile::CheckModified()
 {
-	if (!IsModified())
-		/* nothing has changed - don't save the state file,
-		   don't spin up the hard disk */
-		return;
-
-	Write();
+	if (!IsActive() && IsModified())
+		ScheduleSeconds(2 * 60);
 }
 
-/**
- * This function is called every 5 minutes by the GLib main loop, and
- * saves the state file.
- */
 bool
 StateFile::OnTimeout()
 {
-	AutoWrite();
-	return true;
+	Write();
+	return false;
 }
-- 
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