Improve cake allocator's memory utilisation (#43)

[lunaix-os.git] / lunaix-os / includes / lunaix / mm / mm.h

diff --git a/lunaix-os/includes/lunaix/mm/mm.h b/lunaix-os/includes/lunaix/mm/mm.h
index 31954d37b32b05cd146d5b3e16bdae6285de7252..d72c405656a86a40c6c553335b19d16f748122f0 100644 (file)
--- a/lunaix-os/includes/lunaix/mm/mm.h
+++ b/lunaix-os/includes/lunaix/mm/mm.h
@@ -2,6 +2,9 @@
 #define __LUNAIX_MM_H
 
 #include <lunaix/types.h>
+#include <lunaix/ds/llist.h>
+
+#include <sys/mm/memory.h>
 
 #include <usr/lunaix/mann_flags.h>
 
@@ -42,4 +45,30 @@
 #define REGION_TYPE_STACK (4 << 16)
 #define REGION_TYPE_VARS (5 << 16)
 
+struct mm_region
+{
+    struct llist_header head; // must be first field!
+    struct proc_mm* proc_vms;
+
+    // file mapped to this region
+    struct v_file* mfile;
+    // mapped file offset
+    off_t foff;
+    // mapped file length
+
+    ptr_t start;
+    ptr_t end;
+    u32_t attr;
+    size_t flen;
+
+    void** index; // fast reference, to accelerate access to this very region.
+
+    void* data;
+    // when a region is copied
+    void (*region_copied)(struct mm_region*);
+    // when a region is unmapped
+    void (*destruct_region)(struct mm_region*);
+};
+
+
 #endif /* __LUNAIX_MM_H */