Changeset 665

Timestamp:

Jul 27, 2015, 5:56:15 PM (9 years ago)

Author:

guerin

Message:

fat32: implement cache depth extension in _get_buffer_from_cache()

File:

• soft/giet_vm/giet_fat32/fat32.c (modified) (3 diffs)

soft/giet_vm/giet_fat32/fat32.c

@@ -990 +990 @@
         " for cluster_id = %d\n", cluster_id );
 #endif
-
     }
     else                   // searched cache is a File-Cache
     {
+        // add cache levels if needed
+        while ( _get_levels_from_size( (cluster_id + 1) * 4096 ) > inode->levels )
+        {
+#if (GIET_DEBUG_FAT & 1)
+if ( _get_proctime() > GIET_DEBUG_FAT )
+_printf("\n[DEBUG FAT] _get_buffer_from_cache(): adding a File-Cache level\n" );
+#endif
+
+            inode->cache = _allocate_one_cache_node( inode->cache );
+            inode->levels++;
+        }
+
         node   = inode->cache;
         level  = inode->levels;
@@ -1002 +1013 @@
         " for cluster_id = %d\n", inode->name , cluster_id );
 #endif
-
     }
 
@@ -1817 +1827 @@
         if ( offset >= 4096 )  // new buffer required
         {
-            if ( cluster_id == 63 )   // we need to increase depth of File-Cache
-            {
-                _printf("\n[FAT ERROR] add_dir_entry() File Cache depth extension "
-                        " not implemented\n" );
-                _exit();  // TODO    
-            }
-            else
-            {
-                if ( _get_buffer_from_cache( parent,
-                                             cluster_id + 1,
-                                             &pdesc ) )      return 1;        
-                buffer       = pdesc->buffer;
-                pdesc->dirty = 1;
-                offset       = 0;
-            }
+            if ( _get_buffer_from_cache( parent,
+                                         cluster_id + 1,
+                                         &pdesc ) )      return 1;
+            buffer       = pdesc->buffer;
+            pdesc->dirty = 1;
+            offset       = 0;
         }