gc.txt: more details about what gc does

diff --git a/packfile.h b/packfile.h
index 4ab15116c0125dcfb3c2dad54267cb986bd76c3c..a7fca598d672b73010a5fb99e4507da4634002ff 100644 (file)
--- a/packfile.h
+++ b/packfile.h
@@ -1,6 +1,8 @@
 #ifndef PACKFILE_H
 #define PACKFILE_H
 
+#include "oidset.h"
+
 /*
  * Generate the filename to be used for a pack file with checksum "sha1" and
  * extension "ext". The result is written into the strbuf "buf", overwriting
@@ -42,6 +44,9 @@ extern void install_packed_git(struct packed_git *pack);
  */
 unsigned long approximate_object_count(void);
 
+extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
+                                        struct packed_git *packs);
+
 extern void pack_report(void);
 
 /*
@@ -115,4 +120,32 @@ extern int packed_object_info(struct packed_git *pack, off_t offset, struct obje
 extern void mark_bad_packed_object(struct packed_git *p, const unsigned char *sha1);
 extern const struct packed_git *has_packed_and_bad(const unsigned char *sha1);
 
+extern int find_pack_entry(const unsigned char *sha1, struct pack_entry *e);
+
+extern int has_sha1_pack(const unsigned char *sha1);
+
+extern int has_pack_index(const unsigned char *sha1);
+
+/*
+ * Only iterate over packs obtained from the promisor remote.
+ */
+#define FOR_EACH_OBJECT_PROMISOR_ONLY 2
+
+/*
+ * Iterate over packed objects in both the local
+ * repository and any alternates repositories (unless the
+ * FOR_EACH_OBJECT_LOCAL_ONLY flag, defined in cache.h, is set).
+ */
+typedef int each_packed_object_fn(const struct object_id *oid,
+                                 struct packed_git *pack,
+                                 uint32_t pos,
+                                 void *data);
+extern int for_each_packed_object(each_packed_object_fn, void *, unsigned flags);
+
+/*
+ * Return 1 if an object in a promisor packfile is or refers to the given
+ * object, 0 otherwise.
+ */
+extern int is_promisor_object(const struct object_id *oid);
+
 #endif