ll-merge.c: remove implicit dependency on the_index
[gitweb.git] / commit.c
index 0c3b75aeffea75956adf2190e763b0d753c848c5..449c1f4920cff631f5cf2479772c350c9b8b7325 100644 (file)
--- a/commit.c
+++ b/commit.c
@@ -2,6 +2,8 @@
 #include "tag.h"
 #include "commit.h"
 #include "commit-graph.h"
+#include "repository.h"
+#include "object-store.h"
 #include "pkt-line.h"
 #include "utf8.h"
 #include "diff.h"
@@ -22,24 +24,26 @@ int save_commit_buffer = 1;
 
 const char *commit_type = "commit";
 
-struct commit *lookup_commit_reference_gently(const struct object_id *oid,
-                                             int quiet)
+struct commit *lookup_commit_reference_gently(struct repository *r,
+               const struct object_id *oid, int quiet)
 {
-       struct object *obj = deref_tag(parse_object(oid), NULL, 0);
+       struct object *obj = deref_tag(r,
+                                      parse_object(r, oid),
+                                      NULL, 0);
 
        if (!obj)
                return NULL;
-       return object_as_type(obj, OBJ_COMMIT, quiet);
+       return object_as_type(r, obj, OBJ_COMMIT, quiet);
 }
 
-struct commit *lookup_commit_reference(const struct object_id *oid)
+struct commit *lookup_commit_reference(struct repository *r, const struct object_id *oid)
 {
-       return lookup_commit_reference_gently(oid, 0);
+       return lookup_commit_reference_gently(r, oid, 0);
 }
 
 struct commit *lookup_commit_or_die(const struct object_id *oid, const char *ref_name)
 {
-       struct commit *c = lookup_commit_reference(oid);
+       struct commit *c = lookup_commit_reference(the_repository, oid);
        if (!c)
                die(_("could not parse %s"), ref_name);
        if (oidcmp(oid, &c->object.oid)) {
@@ -49,13 +53,13 @@ struct commit *lookup_commit_or_die(const struct object_id *oid, const char *ref
        return c;
 }
 
-struct commit *lookup_commit(const struct object_id *oid)
+struct commit *lookup_commit(struct repository *r, const struct object_id *oid)
 {
-       struct object *obj = lookup_object(oid->hash);
+       struct object *obj = lookup_object(r, oid->hash);
        if (!obj)
-               return create_object(the_repository, oid->hash,
-                                    alloc_commit_node(the_repository));
-       return object_as_type(obj, OBJ_COMMIT, 0);
+               return create_object(r, oid->hash,
+                                    alloc_commit_node(r));
+       return object_as_type(r, obj, OBJ_COMMIT, 0);
 }
 
 struct commit *lookup_commit_reference_by_name(const char *name)
@@ -65,7 +69,7 @@ struct commit *lookup_commit_reference_by_name(const char *name)
 
        if (get_oid_committish(name, &oid))
                return NULL;
-       commit = lookup_commit_reference(&oid);
+       commit = lookup_commit_reference(the_repository, &oid);
        if (parse_commit(commit))
                return NULL;
        return commit;
@@ -98,41 +102,44 @@ static timestamp_t parse_commit_date(const char *buf, const char *tail)
        return parse_timestamp(dateptr, NULL, 10);
 }
 
-static struct commit_graft **commit_graft;
-static int commit_graft_alloc, commit_graft_nr;
-
 static const unsigned char *commit_graft_sha1_access(size_t index, void *table)
 {
        struct commit_graft **commit_graft_table = table;
        return commit_graft_table[index]->oid.hash;
 }
 
-static int commit_graft_pos(const unsigned char *sha1)
+static int commit_graft_pos(struct repository *r, const unsigned char *sha1)
 {
-       return sha1_pos(sha1, commit_graft, commit_graft_nr,
+       return sha1_pos(sha1, r->parsed_objects->grafts,
+                       r->parsed_objects->grafts_nr,
                        commit_graft_sha1_access);
 }
 
-int register_commit_graft(struct commit_graft *graft, int ignore_dups)
+int register_commit_graft(struct repository *r, struct commit_graft *graft,
+                         int ignore_dups)
 {
-       int pos = commit_graft_pos(graft->oid.hash);
+       int pos = commit_graft_pos(r, graft->oid.hash);
 
        if (0 <= pos) {
                if (ignore_dups)
                        free(graft);
                else {
-                       free(commit_graft[pos]);
-                       commit_graft[pos] = graft;
+                       free(r->parsed_objects->grafts[pos]);
+                       r->parsed_objects->grafts[pos] = graft;
                }
                return 1;
        }
        pos = -pos - 1;
-       ALLOC_GROW(commit_graft, commit_graft_nr + 1, commit_graft_alloc);
-       commit_graft_nr++;
-       if (pos < commit_graft_nr)
-               MOVE_ARRAY(commit_graft + pos + 1, commit_graft + pos,
-                          commit_graft_nr - pos - 1);
-       commit_graft[pos] = graft;
+       ALLOC_GROW(r->parsed_objects->grafts,
+                  r->parsed_objects->grafts_nr + 1,
+                  r->parsed_objects->grafts_alloc);
+       r->parsed_objects->grafts_nr++;
+       if (pos < r->parsed_objects->grafts_nr)
+               memmove(r->parsed_objects->grafts + pos + 1,
+                       r->parsed_objects->grafts + pos,
+                       (r->parsed_objects->grafts_nr - pos - 1) *
+                       sizeof(*r->parsed_objects->grafts));
+       r->parsed_objects->grafts[pos] = graft;
        return 0;
 }
 
@@ -174,7 +181,7 @@ struct commit_graft *read_graft_line(struct strbuf *line)
        return NULL;
 }
 
-static int read_graft_file(const char *graft_file)
+static int read_graft_file(struct repository *r, const char *graft_file)
 {
        FILE *fp = fopen_or_warn(graft_file, "r");
        struct strbuf buf = STRBUF_INIT;
@@ -194,7 +201,7 @@ static int read_graft_file(const char *graft_file)
                struct commit_graft *graft = read_graft_line(&buf);
                if (!graft)
                        continue;
-               if (register_commit_graft(graft, 1))
+               if (register_commit_graft(r, graft, 1))
                        error("duplicate graft data: %s", buf.buf);
        }
        fclose(fp);
@@ -202,50 +209,50 @@ static int read_graft_file(const char *graft_file)
        return 0;
 }
 
-static void prepare_commit_graft(void)
+static void prepare_commit_graft(struct repository *r)
 {
-       static int commit_graft_prepared;
        char *graft_file;
 
-       if (commit_graft_prepared)
+       if (r->parsed_objects->commit_graft_prepared)
                return;
        if (!startup_info->have_repository)
                return;
 
-       graft_file = get_graft_file();
-       read_graft_file(graft_file);
+       graft_file = get_graft_file(r);
+       read_graft_file(r, graft_file);
        /* make sure shallows are read */
-       is_repository_shallow();
-       commit_graft_prepared = 1;
+       is_repository_shallow(r);
+       r->parsed_objects->commit_graft_prepared = 1;
 }
 
-struct commit_graft *lookup_commit_graft(const struct object_id *oid)
+struct commit_graft *lookup_commit_graft(struct repository *r, const struct object_id *oid)
 {
        int pos;
-       prepare_commit_graft();
-       pos = commit_graft_pos(oid->hash);
+       prepare_commit_graft(r);
+       pos = commit_graft_pos(r, oid->hash);
        if (pos < 0)
                return NULL;
-       return commit_graft[pos];
+       return r->parsed_objects->grafts[pos];
 }
 
 int for_each_commit_graft(each_commit_graft_fn fn, void *cb_data)
 {
        int i, ret;
-       for (i = ret = 0; i < commit_graft_nr && !ret; i++)
-               ret = fn(commit_graft[i], cb_data);
+       for (i = ret = 0; i < the_repository->parsed_objects->grafts_nr && !ret; i++)
+               ret = fn(the_repository->parsed_objects->grafts[i], cb_data);
        return ret;
 }
 
 int unregister_shallow(const struct object_id *oid)
 {
-       int pos = commit_graft_pos(oid->hash);
+       int pos = commit_graft_pos(the_repository, oid->hash);
        if (pos < 0)
                return -1;
-       if (pos + 1 < commit_graft_nr)
-               MOVE_ARRAY(commit_graft + pos, commit_graft + pos + 1,
-                          commit_graft_nr - pos - 1);
-       commit_graft_nr--;
+       if (pos + 1 < the_repository->parsed_objects->grafts_nr)
+               MOVE_ARRAY(the_repository->parsed_objects->grafts + pos,
+                          the_repository->parsed_objects->grafts + pos + 1,
+                          the_repository->parsed_objects->grafts_nr - pos - 1);
+       the_repository->parsed_objects->grafts_nr--;
        return 0;
 }
 
@@ -254,18 +261,32 @@ struct commit_buffer {
        unsigned long size;
 };
 define_commit_slab(buffer_slab, struct commit_buffer);
-static struct buffer_slab buffer_slab = COMMIT_SLAB_INIT(1, buffer_slab);
 
-void set_commit_buffer(struct commit *commit, void *buffer, unsigned long size)
+struct buffer_slab *allocate_commit_buffer_slab(void)
+{
+       struct buffer_slab *bs = xmalloc(sizeof(*bs));
+       init_buffer_slab(bs);
+       return bs;
+}
+
+void free_commit_buffer_slab(struct buffer_slab *bs)
 {
-       struct commit_buffer *v = buffer_slab_at(&buffer_slab, commit);
+       clear_buffer_slab(bs);
+       free(bs);
+}
+
+void set_commit_buffer(struct repository *r, struct commit *commit, void *buffer, unsigned long size)
+{
+       struct commit_buffer *v = buffer_slab_at(
+               r->parsed_objects->buffer_slab, commit);
        v->buffer = buffer;
        v->size = size;
 }
 
-const void *get_cached_commit_buffer(const struct commit *commit, unsigned long *sizep)
+const void *get_cached_commit_buffer(struct repository *r, const struct commit *commit, unsigned long *sizep)
 {
-       struct commit_buffer *v = buffer_slab_peek(&buffer_slab, commit);
+       struct commit_buffer *v = buffer_slab_peek(
+               r->parsed_objects->buffer_slab, commit);
        if (!v) {
                if (sizep)
                        *sizep = 0;
@@ -278,7 +299,7 @@ const void *get_cached_commit_buffer(const struct commit *commit, unsigned long
 
 const void *get_commit_buffer(const struct commit *commit, unsigned long *sizep)
 {
-       const void *ret = get_cached_commit_buffer(commit, sizep);
+       const void *ret = get_cached_commit_buffer(the_repository, commit, sizep);
        if (!ret) {
                enum object_type type;
                unsigned long size;
@@ -297,14 +318,16 @@ const void *get_commit_buffer(const struct commit *commit, unsigned long *sizep)
 
 void unuse_commit_buffer(const struct commit *commit, const void *buffer)
 {
-       struct commit_buffer *v = buffer_slab_peek(&buffer_slab, commit);
+       struct commit_buffer *v = buffer_slab_peek(
+               the_repository->parsed_objects->buffer_slab, commit);
        if (!(v && v->buffer == buffer))
                free((void *)buffer);
 }
 
 void free_commit_buffer(struct commit *commit)
 {
-       struct commit_buffer *v = buffer_slab_peek(&buffer_slab, commit);
+       struct commit_buffer *v = buffer_slab_peek(
+               the_repository->parsed_objects->buffer_slab, commit);
        if (v) {
                FREE_AND_NULL(v->buffer);
                v->size = 0;
@@ -319,7 +342,7 @@ struct tree *get_commit_tree(const struct commit *commit)
        if (commit->graph_pos == COMMIT_NOT_FROM_GRAPH)
                BUG("commit has NULL tree, but was not loaded from commit-graph");
 
-       return get_commit_tree_in_graph(commit);
+       return get_commit_tree_in_graph(the_repository, commit);
 }
 
 struct object_id *get_commit_tree_oid(const struct commit *commit)
@@ -340,7 +363,8 @@ void release_commit_memory(struct commit *c)
 
 const void *detach_commit_buffer(struct commit *commit, unsigned long *sizep)
 {
-       struct commit_buffer *v = buffer_slab_peek(&buffer_slab, commit);
+       struct commit_buffer *v = buffer_slab_peek(
+               the_repository->parsed_objects->buffer_slab, commit);
        void *ret;
 
        if (!v) {
@@ -357,15 +381,15 @@ const void *detach_commit_buffer(struct commit *commit, unsigned long *sizep)
        return ret;
 }
 
-int parse_commit_buffer(struct commit *item, const void *buffer, unsigned long size, int check_graph)
+int parse_commit_buffer(struct repository *r, struct commit *item, const void *buffer, unsigned long size, int check_graph)
 {
        const char *tail = buffer;
        const char *bufptr = buffer;
        struct object_id parent;
        struct commit_list **pptr;
        struct commit_graft *graft;
-       const int tree_entry_len = GIT_SHA1_HEXSZ + 5;
-       const int parent_entry_len = GIT_SHA1_HEXSZ + 7;
+       const int tree_entry_len = the_hash_algo->hexsz + 5;
+       const int parent_entry_len = the_hash_algo->hexsz + 7;
 
        if (item->object.parsed)
                return 0;
@@ -377,11 +401,11 @@ int parse_commit_buffer(struct commit *item, const void *buffer, unsigned long s
        if (get_oid_hex(bufptr + 5, &parent) < 0)
                return error("bad tree pointer in commit %s",
                             oid_to_hex(&item->object.oid));
-       item->maybe_tree = lookup_tree(&parent);
+       item->maybe_tree = lookup_tree(r, &parent);
        bufptr += tree_entry_len + 1; /* "tree " + "hex sha1" + "\n" */
        pptr = &item->parents;
 
-       graft = lookup_commit_graft(&item->object.oid);
+       graft = lookup_commit_graft(r, &item->object.oid);
        while (bufptr + parent_entry_len < tail && !memcmp(bufptr, "parent ", 7)) {
                struct commit *new_parent;
 
@@ -396,7 +420,7 @@ int parse_commit_buffer(struct commit *item, const void *buffer, unsigned long s
                 */
                if (graft && (graft->nr_parent < 0 || grafts_replace_parents))
                        continue;
-               new_parent = lookup_commit(&parent);
+               new_parent = lookup_commit(r, &parent);
                if (new_parent)
                        pptr = &commit_list_insert(new_parent, pptr)->next;
        }
@@ -404,7 +428,8 @@ int parse_commit_buffer(struct commit *item, const void *buffer, unsigned long s
                int i;
                struct commit *new_parent;
                for (i = 0; i < graft->nr_parent; i++) {
-                       new_parent = lookup_commit(&graft->parent[i]);
+                       new_parent = lookup_commit(r,
+                                                  &graft->parent[i]);
                        if (!new_parent)
                                continue;
                        pptr = &commit_list_insert(new_parent, pptr)->next;
@@ -413,12 +438,12 @@ int parse_commit_buffer(struct commit *item, const void *buffer, unsigned long s
        item->date = parse_commit_date(bufptr, tail);
 
        if (check_graph)
-               load_commit_graph_info(item);
+               load_commit_graph_info(the_repository, item);
 
        return 0;
 }
 
-int parse_commit_gently(struct commit *item, int quiet_on_missing)
+int parse_commit_internal(struct commit *item, int quiet_on_missing, int use_commit_graph)
 {
        enum object_type type;
        void *buffer;
@@ -429,7 +454,7 @@ int parse_commit_gently(struct commit *item, int quiet_on_missing)
                return -1;
        if (item->object.parsed)
                return 0;
-       if (parse_commit_in_graph(item))
+       if (use_commit_graph && parse_commit_in_graph(the_repository, item))
                return 0;
        buffer = read_object_file(&item->object.oid, &type, &size);
        if (!buffer)
@@ -441,15 +466,21 @@ int parse_commit_gently(struct commit *item, int quiet_on_missing)
                return error("Object %s not a commit",
                             oid_to_hex(&item->object.oid));
        }
-       ret = parse_commit_buffer(item, buffer, size, 0);
+
+       ret = parse_commit_buffer(the_repository, item, buffer, size, 0);
        if (save_commit_buffer && !ret) {
-               set_commit_buffer(item, buffer, size);
+               set_commit_buffer(the_repository, item, buffer, size);
                return 0;
        }
        free(buffer);
        return ret;
 }
 
+int parse_commit_gently(struct commit *item, int quiet_on_missing)
+{
+       return parse_commit_internal(item, quiet_on_missing, 1);
+}
+
 void parse_commit_or_die(struct commit *item)
 {
        if (parse_commit(item))
@@ -625,7 +656,7 @@ struct commit *pop_commit(struct commit_list **stack)
 define_commit_slab(indegree_slab, int);
 
 /* record author-date for each commit object */
-define_commit_slab(author_date_slab, unsigned long);
+define_commit_slab(author_date_slab, timestamp_t);
 
 static void record_author_date(struct author_date_slab *author_date,
                               struct commit *commit)
@@ -843,6 +874,9 @@ static struct commit_list *paint_down_to_common(struct commit *one, int n,
        int i;
        uint32_t last_gen = GENERATION_NUMBER_INFINITY;
 
+       if (!min_generation)
+               queue.compare = compare_commits_by_commit_date;
+
        one->object.flags |= PARENT1;
        if (!n) {
                commit_list_append(one, &result);
@@ -860,7 +894,7 @@ static struct commit_list *paint_down_to_common(struct commit *one, int n,
                struct commit_list *parents;
                int flags;
 
-               if (commit->generation > last_gen)
+               if (min_generation && commit->generation > last_gen)
                        BUG("bad generation skip %8x > %8x at %s",
                            commit->generation, last_gen,
                            oid_to_hex(&commit->object.oid));
@@ -1687,7 +1721,7 @@ struct commit *get_merge_parent(const char *name)
        struct object_id oid;
        if (get_oid(name, &oid))
                return NULL;
-       obj = parse_object(&oid);
+       obj = parse_object(the_repository, &oid);
        commit = (struct commit *)peel_to_type(name, 0, obj, OBJ_COMMIT);
        if (commit && !merge_remote_util(commit))
                set_merge_remote_desc(commit, name, obj);