From: Chris Tallon <chris@vomp.tv>
Date: Tue, 25 Mar 2008 20:08:40 +0000 (+0000)
Subject: Update to advise Linux about FS caching
X-Git-Tag: r0-3-0~20
X-Git-Url: https://git.vomp.tv/gitweb/?a=commitdiff_plain;h=ddda0dc539979f3c4ddfdbae48042d840bdf05e0;p=vompserver.git

Update to advise Linux about FS caching
---

diff --git a/recplayer.c b/recplayer.c
index 6647589..3c550ef 100644
--- a/recplayer.c
+++ b/recplayer.c
@@ -20,6 +20,9 @@
 
 #include "recplayer.h"
 
+#define _XOPEN_SOURCE 600
+#include <fcntl.h>
+
 RecPlayer::RecPlayer(cRecording* rec)
 {
   log = Log::getInstance();
@@ -163,7 +166,10 @@ unsigned long RecPlayer::getBlock(unsigned char* buffer, ULLONG position, unsign
     filePosition = currentPosition - segments[segmentNumber]->start;
     fseek(file, filePosition, SEEK_SET);
     if (fread(&buffer[got], getFromThisSegment, 1, file) != 1) return 0; // umm, big problem.
-
+ 
+    // Tell linux not to bother keeping the data in the FS cache
+    posix_fadvise(file->_fileno, filePosition, getFromThisSegment, POSIX_FADV_DONTNEED);
+ 
     got += getFromThisSegment;
     currentPosition += getFromThisSegment;
     yetToGet -= getFromThisSegment;