From c352836abea57f019c1af6454990a784cd6bf599 Mon Sep 17 00:00:00 2001
From: Erik Walthinsen <omega@temple-baptist.org>
Date: Wed, 17 Oct 2001 20:57:53 +0000
Subject: [PATCH] added another madvise and wrapped them in #ifdef's so they
 don't break systems without MADV_*

Original commit message from CVS:
added another madvise and wrapped them in #ifdef's so they don't break systems without MADV_*
---
 gst/elements/gstfilesrc.c     | 6 ++++++
 plugins/elements/gstfilesrc.c | 6 ++++++
 2 files changed, 12 insertions(+)

diff --git a/gst/elements/gstfilesrc.c b/gst/elements/gstfilesrc.c
index f53548f328..88730864dc 100644
--- a/gst/elements/gstfilesrc.c
+++ b/gst/elements/gstfilesrc.c
@@ -360,6 +360,10 @@ gst_filesrc_free_parent_mmap (GstBuffer *buf)
   }
   g_mutex_unlock(src->map_regions_lock);
 
+#ifdef MADV_DONTNEED
+  // madvise to tell the kernel what to do with it
+  madvise(GST_BUFFER_DATA(buf),GST_BUFFER_SIZE(buf),MADV_DONTNEED);
+#endif
   // now unmap the memory
   munmap(GST_BUFFER_DATA(buf),GST_BUFFER_MAXSIZE(buf));
 }
@@ -384,8 +388,10 @@ gst_filesrc_map_region (GstFileSrc *src, off_t offset, size_t size)
     g_error ("gstfilesrc mmap(0x%x, %d, 0x%llx) : %s",
  	     size, src->fd, offset, sys_errlist[errno]);
   }
+#ifdef MADV_SEQUENTIAL
   // madvise to tell the kernel what to do with it
   retval = madvise(GST_BUFFER_DATA(buf),GST_BUFFER_SIZE(buf),MADV_SEQUENTIAL);
+#endif
   // fill in the rest of the fields
   GST_BUFFER_FLAGS(buf) = GST_BUFFER_READONLY | GST_BUFFER_ORIGINAL;
   GST_BUFFER_SIZE(buf) = size;
diff --git a/plugins/elements/gstfilesrc.c b/plugins/elements/gstfilesrc.c
index f53548f328..88730864dc 100644
--- a/plugins/elements/gstfilesrc.c
+++ b/plugins/elements/gstfilesrc.c
@@ -360,6 +360,10 @@ gst_filesrc_free_parent_mmap (GstBuffer *buf)
   }
   g_mutex_unlock(src->map_regions_lock);
 
+#ifdef MADV_DONTNEED
+  // madvise to tell the kernel what to do with it
+  madvise(GST_BUFFER_DATA(buf),GST_BUFFER_SIZE(buf),MADV_DONTNEED);
+#endif
   // now unmap the memory
   munmap(GST_BUFFER_DATA(buf),GST_BUFFER_MAXSIZE(buf));
 }
@@ -384,8 +388,10 @@ gst_filesrc_map_region (GstFileSrc *src, off_t offset, size_t size)
     g_error ("gstfilesrc mmap(0x%x, %d, 0x%llx) : %s",
  	     size, src->fd, offset, sys_errlist[errno]);
   }
+#ifdef MADV_SEQUENTIAL
   // madvise to tell the kernel what to do with it
   retval = madvise(GST_BUFFER_DATA(buf),GST_BUFFER_SIZE(buf),MADV_SEQUENTIAL);
+#endif
   // fill in the rest of the fields
   GST_BUFFER_FLAGS(buf) = GST_BUFFER_READONLY | GST_BUFFER_ORIGINAL;
   GST_BUFFER_SIZE(buf) = size;