Refactor packed_git to prepare for sliding mmap windows.

diff --git a/cache.h b/cache.h
index 816239bea0fbf53852efcb3575995cd5aef7e445..ae7bceca502f33723a5ff5c051b6c8167835c6b8 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -336,14 +336,21 @@ extern struct alternate_object_database {
 } *alt_odb_list;
 extern void prepare_alt_odb(void);
 
+struct pack_window {
+       struct pack_window *next;
+       unsigned char *base;
+       off_t offset;
+       size_t len;
+       unsigned int last_used;
+       unsigned int inuse_cnt;
+};
+
 extern struct packed_git {
        struct packed_git *next;
        unsigned long index_size;
        unsigned long pack_size;
+       struct pack_window *windows;
        unsigned int *index_base;
-       void *pack_base;
-       unsigned int pack_last_used;
-       unsigned int pack_use_cnt;
        int pack_local;
        unsigned char sha1[20];
        /* something like ".git/objects/pack/xxxxx.pack" */