Lazily open pack index files on demand

diff --git a/cache.h b/cache.h
index 38a0cbd580a8497b18881548f7995bcfe97666af..0f4a05b51ea7aca66e308443eefa1aa11d822a5f 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -40,8 +40,8 @@
  * happens that everybody shares the same bit representation
  * in the UNIX world (and apparently wider too..)
  */
-#define S_IFDIRLNK     0160000
-#define S_ISDIRLNK(m)  (((m) & S_IFMT) == S_IFDIRLNK)
+#define S_IFGITLINK    0160000
+#define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)
 
 /*
  * Intensive research over the course of many years has shown that
@@ -123,8 +123,8 @@ static inline unsigned int create_ce_mode(unsigned int mode)
 {
        if (S_ISLNK(mode))
                return htonl(S_IFLNK);
-       if (S_ISDIR(mode) || S_ISDIRLNK(mode))
-               return htonl(S_IFDIRLNK);
+       if (S_ISDIR(mode) || S_ISGITLINK(mode))
+               return htonl(S_IFGITLINK);
        return htonl(S_IFREG | ce_permissions(mode));
 }
 static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode)
@@ -142,7 +142,7 @@ static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned in
 }
 #define canon_mode(mode) \
        (S_ISREG(mode) ? (S_IFREG | ce_permissions(mode)) : \
-       S_ISLNK(mode) ? S_IFLNK : S_ISDIR(mode) ? S_IFDIR : S_IFDIRLNK)
+       S_ISLNK(mode) ? S_IFLNK : S_ISDIR(mode) ? S_IFDIR : S_IFGITLINK)
 
 #define cache_entry_size(len) ((offsetof(struct cache_entry,name) + (len) + 8) & ~7)
 
@@ -273,7 +273,6 @@ extern void rollback_lock_file(struct lock_file *);
 extern int delete_ref(const char *, const unsigned char *sha1);
 
 /* Environment bits from configuration mechanism */
-extern int use_legacy_headers;
 extern int trust_executable_bit;
 extern int has_symlinks;
 extern int assume_unchanged;
@@ -283,6 +282,8 @@ extern int warn_ambiguous_refs;
 extern int shared_repository;
 extern const char *apply_default_whitespace;
 extern int zlib_compression_level;
+extern int core_compression_level;
+extern int core_compression_seen;
 extern size_t packed_git_window_size;
 extern size_t packed_git_limit;
 extern size_t delta_base_cache_limit;
@@ -354,7 +355,6 @@ extern int move_temp_to_file(const char *tmpfile, const char *filename);
 extern int has_sha1_pack(const unsigned char *sha1, const char **ignore);
 extern int has_sha1_file(const unsigned char *sha1);
 extern void *map_sha1_file(const unsigned char *sha1, unsigned long *);
-extern int legacy_loose_object(unsigned char *);
 
 extern int has_pack_file(const unsigned char *sha1);
 extern int has_pack_index(const unsigned char *sha1);
@@ -389,7 +389,7 @@ extern void *read_object_with_reference(const unsigned char *sha1,
                                        unsigned long *size,
                                        unsigned char *sha1_ret);
 
-enum date_mode { DATE_NORMAL = 0, DATE_RELATIVE, DATE_SHORT };
+enum date_mode { DATE_NORMAL = 0, DATE_RELATIVE, DATE_SHORT, DATE_LOCAL };
 const char *show_date(unsigned long time, int timezone, enum date_mode mode);
 const char *show_rfc2822_date(unsigned long time, int timezone);
 int parse_date(const char *date, char *buf, int bufsize);
@@ -410,6 +410,7 @@ struct checkout {
 };
 
 extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
+extern int has_symlink_leading_path(const char *name, char *last_symlink);
 
 extern struct alternate_object_database {
        struct alternate_object_database *next;
@@ -462,7 +463,8 @@ struct ref {
 #define REF_HEADS      (1u << 1)
 #define REF_TAGS       (1u << 2)
 
-extern pid_t git_connect(int fd[2], char *url, const char *prog);
+#define CONNECT_VERBOSE       (1u << 0)
+extern pid_t git_connect(int fd[2], char *url, const char *prog, int flags);
 extern int finish_connect(pid_t pid);
 extern int path_match(const char *path, int nr, char **match);
 extern int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail,
@@ -483,10 +485,11 @@ extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
                                         struct packed_git *packs);
 
 extern void pack_report(void);
+extern int open_pack_index(struct packed_git *);
 extern unsigned char* use_pack(struct packed_git *, struct pack_window **, off_t, unsigned int *);
 extern void unuse_pack(struct pack_window **);
 extern struct packed_git *add_packed_git(const char *, int, int);
-extern const unsigned char *nth_packed_object_sha1(const struct packed_git *, uint32_t);
+extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t);
 extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *);
 extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
 extern unsigned long unpack_object_header_gently(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
@@ -547,6 +550,7 @@ extern void trace_argv_printf(const char **argv, int count, const char *format,
 /* convert.c */
 extern char *convert_to_git(const char *path, const char *src, unsigned long *sizep);
 extern char *convert_to_working_tree(const char *path, const char *src, unsigned long *sizep);
+extern void *convert_sha1_file(const char *path, const unsigned char *sha1, unsigned int mode, enum object_type *type, unsigned long *size);
 
 /* match-trees.c */
 void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);