MemoryMappedFile::getTotalMapped

2 files changed, 15 insertions, 3 deletions

diff --git a/util/mmap.cpp b/util/mmap.cpp
index 5c571cc87a7..7d6b1d0b558 100644
--- a/util/mmap.cpp
+++ b/util/mmap.cpp
@@ -49,6 +49,15 @@ namespace mongo {
         --closingAllFiles;
     }
 
+    long long MemoryMappedFile::totalMappedLength(){
+        unsigned long long total = 0;
+        
+        for ( set<MemoryMappedFile*>::iterator i = mmfiles.begin(); i != mmfiles.end(); i++ )
+            total += (*i)->length();
+
+        return total;
+    }
+
     void MemoryMappedFile::updateLength( const char *filename, long &length ) {
         if ( !boost::filesystem::exists( filename ) )
             return;
diff --git a/util/mmap.h b/util/mmap.h
index 810dd4fb2f5..64eb2d4b18a 100644
--- a/util/mmap.h
+++ b/util/mmap.h
@@ -22,11 +22,11 @@ namespace mongo {
 
     class MemoryMappedFile {
     public:
-        static void closeAllFiles( stringstream &message );
+
         MemoryMappedFile();
         ~MemoryMappedFile(); /* closes the file if open */
         void close();
-
+        
         // Throws exception if file doesn't exist.
         void* map( const char *filename );
 
@@ -46,7 +46,10 @@ namespace mongo {
         }
         
         static void updateLength( const char *filename, long &length );
-
+        
+        static long long totalMappedLength();
+        static void closeAllFiles( stringstream &message );
+        
     private:
         void created();