| #ifndef REPLACE_OBJECT_H |
| #define REPLACE_OBJECT_H |
| |
| #include "oidmap.h" |
| #include "repository.h" |
| #include "object-store.h" |
| |
| /* |
| * Do replace refs need to be checked this run? This variable is |
| * initialized to true unless --no-replace-object is used or |
| * $GIT_NO_REPLACE_OBJECTS is set, but is set to false by some |
| * commands that do not want replace references to be active. |
| */ |
| extern int read_replace_refs; |
| |
| struct replace_object { |
| struct oidmap_entry original; |
| struct object_id replacement; |
| }; |
| |
| void prepare_replace_object(struct repository *r); |
| |
| /* |
| * This internal function is only declared here for the benefit of |
| * lookup_replace_object(). Please do not call it directly. |
| */ |
| const struct object_id *do_lookup_replace_object(struct repository *r, |
| const struct object_id *oid); |
| |
| /* |
| * If object sha1 should be replaced, return the replacement object's |
| * name (replaced recursively, if necessary). The return value is |
| * either sha1 or a pointer to a permanently-allocated value. When |
| * object replacement is suppressed, always return sha1. |
| * |
| * Note: some thread debuggers might point a data race on the |
| * replace_map_initialized reading in this function. However, we know there's no |
| * problem in the value being updated by one thread right after another one read |
| * it here (and it should be written to only once, anyway). |
| */ |
| static inline const struct object_id *lookup_replace_object(struct repository *r, |
| const struct object_id *oid) |
| { |
| if (!read_replace_refs || |
| (r->objects->replace_map_initialized && |
| r->objects->replace_map->map.tablesize == 0)) |
| return oid; |
| return do_lookup_replace_object(r, oid); |
| } |
| |
| #endif /* REPLACE_OBJECT_H */ |