1 files changed, 65 insertions, 0 deletions
diff --git a/kernel/vm/anon.c b/kernel/vm/anon.c
new file mode 100644
index 0000000..a998d70
--- /dev/null
+++ b/kernel/vm/anon.c
@@ -0,0 +1,65 @@
+#include "mm/mobj.h"
+#include "mm/page.h"
+#include "mm/pframe.h"
+#include "mm/slab.h"
+
+#include "util/debug.h"
+#include "util/string.h"
+
+/* for debugging/verification purposes */
+int anon_count = 0; 
+
+static slab_allocator_t *anon_allocator;
+
+static long anon_fill_pframe(mobj_t *o, pframe_t *pf);
+
+static long anon_flush_pframe(mobj_t *o, pframe_t *pf);
+
+static void anon_destructor(mobj_t *o);
+
+static mobj_ops_t anon_mobj_ops = {.get_pframe = NULL,
+                                   .fill_pframe = anon_fill_pframe,
+                                   .flush_pframe = anon_flush_pframe,
+                                   .destructor = anon_destructor};
+
+/*
+ * Initialize anon_allocator using the slab allocator.
+ */
+void anon_init()
+{
+    NOT_YET_IMPLEMENTED("VM: ***none***");
+}
+
+/*
+ * The mobj should be locked upon successful return. Use mobj_init and
+ * mobj_lock.
+ */
+mobj_t *anon_create()
+{
+    NOT_YET_IMPLEMENTED("VM: ***none***");
+    return NULL;
+}
+
+/* 
+ * This function is not complicated -- think about what the pframe should look
+ * like for an anonymous object 
+ */
+static long anon_fill_pframe(mobj_t *o, pframe_t *pf)
+{
+    NOT_YET_IMPLEMENTED("VM: ***none***");
+    return 0;
+}
+
+static long anon_flush_pframe(mobj_t *o, pframe_t *pf) { return 0; }
+
+/*
+ * Release all resources associated with an anonymous object.
+ *
+ * Hints:
+ *  1) Call mobj_default_destructor() to free pframes
+ *  2) Free the mobj
+ */
+static void anon_destructor(mobj_t *o)
+{
+    NOT_YET_IMPLEMENTED("VM: ***none***");
+}