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#ifndef REPLACE_OBJECT_H
#define REPLACE_OBJECT_H
#include "oidmap.h"
#include "repository.h"
#include "object-store-ll.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 */
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