From 2fd67aca84165be834319139d07634f888b18bb5 Mon Sep 17 00:00:00 2001
From: Mathias Stearn <mathias@10gen.com>
Date: Mon, 15 Mar 2010 13:57:13 -0400
Subject: Async flush uasserts on windows SERVER-735

---
 util/mmap_win.cpp | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/util/mmap_win.cpp b/util/mmap_win.cpp
index bbb7d873986..6f7fd803310 100644
--- a/util/mmap_win.cpp
+++ b/util/mmap_win.cpp
@@ -100,21 +100,20 @@ namespace mongo {
     }
 
     void MemoryMappedFile::flush(bool sync) {
+        uassert(13056, "Async flushing not supported on windows", sync);
+
         if (!view) return;
 
-        // Note: this is blocking and ignores sync
         bool success = FlushViewOfFile(view, 0); // 0 means whole mapping
         if (!success){
             int err = GetLastError();
-            out() << "FlushViewOfFile failed " << err << " " << endl;
+            out() << "FlushViewOfFile failed " << err << endl;
         }
 
-        if (sync){
-            bool success = FlushFileBuffers(fd);
-            if (!success){
-                int err = GetLastError();
-                out() << "FlushFileBuffers failed " << err << " " << endl;
-            }
+        success = FlushFileBuffers(fd);
+        if (!success){
+            int err = GetLastError();
+            out() << "FlushFileBuffers failed " << err << endl;
         }
     }
 } 
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