revert(3p/git): Revert merge of git upstream at v2.26.2 r/852

This causes cgit to serve error pages, which is undesirable.

This reverts commit 5229c9b232de5bfa959ad6ebbb4c8192ac513352, reversing
changes made to f2b211131f2347342dde63975b09cf603149f1a3.

1 files changed, 5 insertions, 70 deletions

diff --git a/third_party/git/object-store.h b/third_party/git/object-store.h
index be72fee7d5..7f7b3cdd80 100644
--- a/third_party/git/object-store.h
+++ b/third_party/git/object-store.h
@@ -6,7 +6,6 @@
 #include "list.h"
 #include "sha1-array.h"
 #include "strbuf.h"
-#include "thread-utils.h"
 
 struct object_directory {
 	struct object_directory *next;
@@ -61,7 +60,6 @@ struct oid_array *odb_loose_cache(struct object_directory *odb,
 void odb_clear_loose_cache(struct object_directory *odb);
 
 struct packed_git {
-	struct hashmap_entry packmap_ent;
 	struct packed_git *next;
 	struct list_head mru;
 	struct pack_window *windows;
@@ -90,20 +88,6 @@ struct packed_git {
 
 struct multi_pack_index;
 
-static inline int pack_map_entry_cmp(const void *unused_cmp_data,
-				     const struct hashmap_entry *entry,
-				     const struct hashmap_entry *entry2,
-				     const void *keydata)
-{
-	const char *key = keydata;
-	const struct packed_git *pg1, *pg2;
-
-	pg1 = container_of(entry, const struct packed_git, packmap_ent);
-	pg2 = container_of(entry2, const struct packed_git, packmap_ent);
-
-	return strcmp(pg1->pack_name, key ? key : pg2->pack_name);
-}
-
 struct raw_object_store {
 	/*
 	 * Set of all object directories; the main directory is first (and
@@ -126,8 +110,6 @@ struct raw_object_store {
 	 * (see git-replace(1)).
 	 */
 	struct oidmap *replace_map;
-	unsigned replace_map_initialized : 1;
-	pthread_mutex_t replace_mutex; /* protect object replace functions */
 
 	struct commit_graph *commit_graph;
 	unsigned commit_graph_attempted : 1; /* if loading has been attempted */
@@ -150,12 +132,6 @@ struct raw_object_store {
 	struct list_head packed_git_mru;
 
 	/*
-	 * A map of packfiles to packed_git structs for tracking which
-	 * packs have been loaded already.
-	 */
-	struct hashmap pack_map;
-
-	/*
 	 * A fast, rough count of the number of objects in the repository.
 	 * These two fields are not meant for direct access. Use
 	 * approximate_object_count() instead.
@@ -201,9 +177,8 @@ static inline void *repo_read_object_file(struct repository *r,
 /* Read and unpack an object file into memory, write memory to an object file */
 int oid_object_info(struct repository *r, const struct object_id *, unsigned long *);
 
-int hash_object_file(const struct git_hash_algo *algo, const void *buf,
-		     unsigned long len, const char *type,
-		     struct object_id *oid);
+int hash_object_file(const void *buf, unsigned long len,
+		     const char *type, struct object_id *oid);
 
 int write_object_file(const void *buf, unsigned long len,
 		      const char *type, struct object_id *oid);
@@ -212,14 +187,6 @@ int hash_object_file_literally(const void *buf, unsigned long len,
 			       const char *type, struct object_id *oid,
 			       unsigned flags);
 
-/*
- * Add an object file to the in-memory object store, without writing it
- * to disk.
- *
- * Callers are responsible for calling write_object_file to record the
- * object in persistent storage before writing any other new objects
- * that reference it.
- */
 int pretend_object_file(void *, unsigned long, enum object_type,
 			struct object_id *oid);
 
@@ -261,46 +228,12 @@ int has_loose_object_nonlocal(const struct object_id *);
 
 void assert_oid_type(const struct object_id *oid, enum object_type expect);
 
-/*
- * Enabling the object read lock allows multiple threads to safely call the
- * following functions in parallel: repo_read_object_file(), read_object_file(),
- * read_object_file_extended(), read_object_with_reference(), read_object(),
- * oid_object_info() and oid_object_info_extended().
- *
- * obj_read_lock() and obj_read_unlock() may also be used to protect other
- * section which cannot execute in parallel with object reading. Since the used
- * lock is a recursive mutex, these sections can even contain calls to object
- * reading functions. However, beware that in these cases zlib inflation won't
- * be performed in parallel, losing performance.
- *
- * TODO: oid_object_info_extended()'s call stack has a recursive behavior. If
- * any of its callees end up calling it, this recursive call won't benefit from
- * parallel inflation.
- */
-void enable_obj_read_lock(void);
-void disable_obj_read_lock(void);
-
-extern int obj_read_use_lock;
-extern pthread_mutex_t obj_read_mutex;
-
-static inline void obj_read_lock(void)
-{
-	if(obj_read_use_lock)
-		pthread_mutex_lock(&obj_read_mutex);
-}
-
-static inline void obj_read_unlock(void)
-{
-	if(obj_read_use_lock)
-		pthread_mutex_unlock(&obj_read_mutex);
-}
-
 struct object_info {
 	/* Request */
 	enum object_type *typep;
 	unsigned long *sizep;
 	off_t *disk_sizep;
-	struct object_id *delta_base_oid;
+	unsigned char *delta_base_sha1;
 	struct strbuf *type_name;
 	void **contentp;
 
@@ -338,6 +271,8 @@ struct object_info {
 #define OBJECT_INFO_LOOKUP_REPLACE 1
 /* Allow reading from a loose object file of unknown/bogus type */
 #define OBJECT_INFO_ALLOW_UNKNOWN_TYPE 2
+/* Do not check cached storage */
+#define OBJECT_INFO_SKIP_CACHED 4
 /* Do not retry packed storage after checking packed and loose storage */
 #define OBJECT_INFO_QUICK 8
 /* Do not check loose object */