pack-objects: handle island check for "external" delta base

diff --git a/pack-bitmap.c b/pack-bitmap.c
index 4e50ab391fa0df9fc2d28a5bfdc31996635699b6..c7d593c91c7a76497407a703d9f0c50925e2475a 100644 (file)
--- a/pack-bitmap.c
+++ b/pack-bitmap.c
@@ -86,6 +86,9 @@ struct bitmap_index {
        /* Bitmap result of the last performed walk */
        struct bitmap *result;
 
+       /* "have" bitmap from the last performed walk */
+       struct bitmap *haves;
+
        /* Version of the bitmap index */
        unsigned int version;
 
@@ -759,8 +762,8 @@ struct bitmap_index *prepare_bitmap_walk(struct rev_info *revs)
                bitmap_and_not(wants_bitmap, haves_bitmap);
 
        bitmap_git->result = wants_bitmap;
+       bitmap_git->haves = haves_bitmap;
 
-       bitmap_free(haves_bitmap);
        return bitmap_git;
 
 cleanup:
@@ -1114,5 +1117,25 @@ void free_bitmap_index(struct bitmap_index *b)
        free(b->ext_index.objects);
        free(b->ext_index.hashes);
        bitmap_free(b->result);
+       bitmap_free(b->haves);
        free(b);
 }
+
+int bitmap_has_sha1_in_uninteresting(struct bitmap_index *bitmap_git,
+                                    const unsigned char *sha1)
+{
+       int pos;
+
+       if (!bitmap_git)
+               return 0; /* no bitmap loaded */
+       if (!bitmap_git->result)
+               BUG("failed to perform bitmap walk before querying");
+       if (!bitmap_git->haves)
+               return 0; /* walk had no "haves" */
+
+       pos = bitmap_position_packfile(bitmap_git, sha1);
+       if (pos < 0)
+               return 0;
+
+       return bitmap_get(bitmap_git->haves, pos);
+}