#include "path.h"
#include "sha1-array.h"
#include "repository.h"
+#include "mem-pool.h"
#include <zlib.h>
typedef struct git_zstream {
struct stat_data ce_stat_data;
unsigned int ce_mode;
unsigned int ce_flags;
+ unsigned int mem_pool_allocated;
unsigned int ce_namelen;
unsigned int index; /* for link extension */
struct object_id oid;
/* Forward structure decls */
struct pathspec;
struct child_process;
+struct tree;
/*
* Copy the sha1 and stat state of a cache entry from one to
const struct cache_entry *src)
{
unsigned int state = dst->ce_flags & CE_HASHED;
+ int mem_pool_allocated = dst->mem_pool_allocated;
/* Don't copy hash chain and name */
memcpy(&dst->ce_stat_data, &src->ce_stat_data,
/* Restore the hash state */
dst->ce_flags = (dst->ce_flags & ~CE_HASHED) | state;
+
+ /* Restore the mem_pool_allocated flag */
+ dst->mem_pool_allocated = mem_pool_allocated;
}
static inline unsigned create_ce_flags(unsigned stage)
struct untracked_cache *untracked;
uint64_t fsmonitor_last_update;
struct ewah_bitmap *fsmonitor_dirty;
+ struct mem_pool *ce_mem_pool;
};
extern struct index_state the_index;
extern void free_name_hash(struct index_state *istate);
+/* Cache entry creation and cleanup */
+
+/*
+ * Create cache_entry intended for use in the specified index. Caller
+ * is responsible for discarding the cache_entry with
+ * `discard_cache_entry`.
+ */
+struct cache_entry *make_cache_entry(struct index_state *istate,
+ unsigned int mode,
+ const struct object_id *oid,
+ const char *path,
+ int stage,
+ unsigned int refresh_options);
+
+struct cache_entry *make_empty_cache_entry(struct index_state *istate,
+ size_t name_len);
+
+/*
+ * Create a cache_entry that is not intended to be added to an index.
+ * Caller is responsible for discarding the cache_entry
+ * with `discard_cache_entry`.
+ */
+struct cache_entry *make_transient_cache_entry(unsigned int mode,
+ const struct object_id *oid,
+ const char *path,
+ int stage);
+
+struct cache_entry *make_empty_transient_cache_entry(size_t name_len);
+
+/*
+ * Discard cache entry.
+ */
+void discard_cache_entry(struct cache_entry *ce);
+
+/*
+ * Check configuration if we should perform extra validation on cache
+ * entries.
+ */
+int should_validate_cache_entries(void);
+
+/*
+ * Duplicate a cache_entry. Allocate memory for the new entry from a
+ * memory_pool. Takes into account cache_entry fields that are meant
+ * for managing the underlying memory allocation of the cache_entry.
+ */
+struct cache_entry *dup_cache_entry(const struct cache_entry *ce, struct index_state *istate);
+
+/*
+ * Validate the cache entries in the index. This is an internal
+ * consistency check that the cache_entry structs are allocated from
+ * the expected memory pool.
+ */
+void validate_cache_entries(const struct index_state *istate);
+
#ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
#define active_cache (the_index.cache)
#define active_nr (the_index.cache_nr)
extern int unmerged_index(const struct index_state *);
/**
- * Returns 1 if the index differs from HEAD, 0 otherwise. When on an unborn
- * branch, returns 1 if there are entries in the index, 0 otherwise. If an
- * strbuf is provided, the space-separated list of files that differ will be
- * appended to it.
+ * Returns 1 if istate differs from tree, 0 otherwise. If tree is NULL,
+ * compares istate to HEAD. If tree is NULL and on an unborn branch,
+ * returns 1 if there are entries in istate, 0 otherwise. If an strbuf is
+ * provided, the space-separated list of files that differ will be appended
+ * to it.
*/
-extern int index_has_changes(struct strbuf *sb);
+extern int index_has_changes(const struct index_state *istate,
+ struct tree *tree,
+ struct strbuf *sb);
extern int verify_path(const char *path, unsigned mode);
extern int strcmp_offset(const char *s1, const char *s2, size_t *first_change);
extern int add_to_index(struct index_state *, const char *path, struct stat *, int flags);
extern int add_file_to_index(struct index_state *, const char *path, int flags);
-extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, unsigned int refresh_options);
extern int chmod_index_entry(struct index_state *, struct cache_entry *ce, char flip);
extern int ce_same_name(const struct cache_entry *a, const struct cache_entry *b);
extern void set_object_name_for_intent_to_add_entry(struct cache_entry *ce);
#define REFRESH_IGNORE_SUBMODULES 0x0010 /* ignore submodules */
#define REFRESH_IN_PORCELAIN 0x0020 /* user friendly output, not "needs update" */
extern int refresh_index(struct index_state *, unsigned int flags, const struct pathspec *pathspec, char *seen, const char *header_msg);
-extern struct cache_entry *refresh_cache_entry(struct cache_entry *, unsigned int);
+extern struct cache_entry *refresh_cache_entry(struct index_state *, struct cache_entry *, unsigned int);
/*
* Opportunistically update the index but do not complain if we can't.
* 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. As an
- * optimization it is also set to false if replace references have
- * been sought but there were none.
+ * commands that do not want replace references to be active.
*/
-extern int check_replace_refs;
+extern int read_replace_refs;
extern char *git_replace_ref_base;
extern int fsync_object_files;
extern int core_preload_index;
-extern int core_commit_graph;
extern int core_apply_sparse_checkout;
extern int precomposed_unicode;
extern int protect_hfs;
};
extern enum log_refs_config log_all_ref_updates;
-enum branch_track {
- BRANCH_TRACK_UNSPECIFIED = -1,
- BRANCH_TRACK_NEVER = 0,
- BRANCH_TRACK_REMOTE,
- BRANCH_TRACK_ALWAYS,
- BRANCH_TRACK_EXPLICIT,
- BRANCH_TRACK_OVERRIDE
-};
-
enum rebase_setup_type {
AUTOREBASE_NEVER = 0,
AUTOREBASE_LOCAL,
PUSH_DEFAULT_UNSPECIFIED
};
-extern enum branch_track git_branch_track;
extern enum rebase_setup_type autorebase;
extern enum push_default_type push_default;
static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
{
+ /*
+ * This is a temporary optimization hack. By asserting the size here,
+ * we let the compiler know that it's always going to be 20, which lets
+ * it turn this fixed-size memcmp into a few inline instructions.
+ *
+ * This will need to be extended or ripped out when we learn about
+ * hashes of different sizes.
+ */
+ if (the_hash_algo->rawsz != 20)
+ BUG("hash size not yet supported by hashcmp");
return memcmp(sha1, sha2, the_hash_algo->rawsz);
}
return hashcmp(oid1->hash, oid2->hash);
}
+static inline int hasheq(const unsigned char *sha1, const unsigned char *sha2)
+{
+ return !hashcmp(sha1, sha2);
+}
+
+static inline int oideq(const struct object_id *oid1, const struct object_id *oid2)
+{
+ return hasheq(oid1->hash, oid2->hash);
+}
+
static inline int is_null_sha1(const unsigned char *sha1)
{
- return !hashcmp(sha1, null_sha1);
+ return hasheq(sha1, null_sha1);
}
static inline int is_null_oid(const struct object_id *oid)
{
- return !hashcmp(oid->hash, null_sha1);
+ return hasheq(oid->hash, null_sha1);
}
static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
static inline int is_empty_blob_sha1(const unsigned char *sha1)
{
- return !hashcmp(sha1, the_hash_algo->empty_blob->hash);
+ return hasheq(sha1, the_hash_algo->empty_blob->hash);
}
static inline int is_empty_blob_oid(const struct object_id *oid)
{
- return !oidcmp(oid, the_hash_algo->empty_blob);
+ return oideq(oid, the_hash_algo->empty_blob);
}
static inline int is_empty_tree_sha1(const unsigned char *sha1)
{
- return !hashcmp(sha1, the_hash_algo->empty_tree->hash);
+ return hasheq(sha1, the_hash_algo->empty_tree->hash);
}
static inline int is_empty_tree_oid(const struct object_id *oid)
{
- return !oidcmp(oid, the_hash_algo->empty_tree);
+ return oideq(oid, the_hash_algo->empty_tree);
}
const char *empty_tree_oid_hex(void);
extern struct object *peel_to_type(const char *name, int namelen,
struct object *o, enum object_type);
+enum date_mode_type {
+ DATE_NORMAL = 0,
+ DATE_RELATIVE,
+ DATE_SHORT,
+ DATE_ISO8601,
+ DATE_ISO8601_STRICT,
+ DATE_RFC2822,
+ DATE_STRFTIME,
+ DATE_RAW,
+ DATE_UNIX
+};
+
struct date_mode {
- enum date_mode_type {
- DATE_NORMAL = 0,
- DATE_RELATIVE,
- DATE_SHORT,
- DATE_ISO8601,
- DATE_ISO8601_STRICT,
- DATE_RFC2822,
- DATE_STRFTIME,
- DATE_RAW,
- DATE_UNIX
- } type;
+ enum date_mode_type type;
const char *strftime_fmt;
int local;
};
unsigned force:1,
quiet:1,
not_new:1,
+ clone:1,
refresh_cache:1;
};
#define CHECKOUT_INIT { NULL, "" }
*/
extern int odb_pack_keep(const char *name);
-/*
- * Iterate over the files in the loose-object parts of the object
- * directory "path", triggering the following callbacks:
- *
- * - loose_object is called for each loose object we find.
- *
- * - loose_cruft is called for any files that do not appear to be
- * loose objects. Note that we only look in the loose object
- * directories "objects/[0-9a-f]{2}/", so we will not report
- * "objects/foobar" as cruft.
- *
- * - loose_subdir is called for each top-level hashed subdirectory
- * of the object directory (e.g., "$OBJDIR/f0"). It is called
- * after the objects in the directory are processed.
- *
- * Any callback that is NULL will be ignored. Callbacks returning non-zero
- * will end the iteration.
- *
- * In the "buf" variant, "path" is a strbuf which will also be used as a
- * scratch buffer, but restored to its original contents before
- * the function returns.
- */
-typedef int each_loose_object_fn(const struct object_id *oid,
- const char *path,
- void *data);
-typedef int each_loose_cruft_fn(const char *basename,
- const char *path,
- void *data);
-typedef int each_loose_subdir_fn(unsigned int nr,
- const char *path,
- void *data);
-int for_each_file_in_obj_subdir(unsigned int subdir_nr,
- struct strbuf *path,
- each_loose_object_fn obj_cb,
- each_loose_cruft_fn cruft_cb,
- each_loose_subdir_fn subdir_cb,
- void *data);
-int for_each_loose_file_in_objdir(const char *path,
- each_loose_object_fn obj_cb,
- each_loose_cruft_fn cruft_cb,
- each_loose_subdir_fn subdir_cb,
- void *data);
-int for_each_loose_file_in_objdir_buf(struct strbuf *path,
- each_loose_object_fn obj_cb,
- each_loose_cruft_fn cruft_cb,
- each_loose_subdir_fn subdir_cb,
- void *data);
-
-/*
- * Iterate over loose objects in both the local
- * repository and any alternates repositories (unless the
- * LOCAL_ONLY flag is set).
- */
-#define FOR_EACH_OBJECT_LOCAL_ONLY 0x1
-extern int for_each_loose_object(each_loose_object_fn, void *, unsigned flags);
-
/*
* Set this to 0 to prevent sha1_object_info_extended() from fetching missing
* blobs. This has a difference only if extensions.partialClone is set.