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authorJunio C Hamano <gitster@pobox.com>2013-06-14 08:46:13 -0700
committerJunio C Hamano <gitster@pobox.com>2013-06-14 08:46:14 -0700
commitede63a195c53d31207d694258bd8bc740dbc87a7 (patch)
treee2b1eee737f1b7c3af9590f6b8b2a09962ea7537 /revision.c
parentb27a79d16b21be064c0ac3634928a91e3eee5c01 (diff)
parent4f78c24c63bf0b035afc02372727a3b5897d9835 (diff)
downloadgit-ede63a195c53d31207d694258bd8bc740dbc87a7.tar.gz
git-ede63a195c53d31207d694258bd8bc740dbc87a7.tar.xz
Merge branch 'mh/reflife'
Define memory ownership and lifetime rules for what for-each-ref feeds to its callbacks (in short, "you do not own it, so make a copy if you want to keep it"). * mh/reflife: (25 commits) refs: document the lifetime of the args passed to each_ref_fn register_ref(): make a copy of the bad reference SHA-1 exclude_existing(): set existing_refs.strdup_strings string_list_add_refs_by_glob(): add a comment about memory management string_list_add_one_ref(): rename first parameter to "refname" show_head_ref(): rename first parameter to "refname" show_head_ref(): do not shadow name of argument add_existing(): do not retain a reference to sha1 do_fetch(): clean up existing_refs before exiting do_fetch(): reduce scope of peer_item object_array_entry: fix memory handling of the name field find_first_merges(): remove unnecessary code find_first_merges(): initialize merges variable using initializer fsck: don't put a void*-shaped peg in a char*-shaped hole object_array_remove_duplicates(): rewrite to reduce copying revision: use object_array_filter() in implementation of gc_boundary() object_array: add function object_array_filter() revision: split some overly-long lines cmd_diff(): make it obvious which cases are exclusive of each other cmd_diff(): rename local variable "list" -> "entry" ...
Diffstat (limited to 'revision.c')
-rw-r--r--revision.c64
1 files changed, 38 insertions, 26 deletions
diff --git a/revision.c b/revision.c
index 9318b7d76..f1bb731fd 100644
--- a/revision.c
+++ b/revision.c
@@ -71,7 +71,8 @@ static int show_path_truncated(FILE *out, const struct name_path *path)
return ours || emitted;
}
-void show_object_with_name(FILE *out, struct object *obj, const struct name_path *path, const char *component)
+void show_object_with_name(FILE *out, struct object *obj,
+ const struct name_path *path, const char *component)
{
struct name_path leaf;
leaf.up = (struct name_path *)path;
@@ -88,7 +89,9 @@ void add_object(struct object *obj,
struct name_path *path,
const char *name)
{
- add_object_array(obj, path_name(path, name), p);
+ char *pn = path_name(path, name);
+ add_object_array(obj, pn, p);
+ free(pn);
}
static void mark_blob_uninteresting(struct blob *blob)
@@ -187,7 +190,9 @@ void mark_parents_uninteresting(struct commit *commit)
}
}
-static void add_pending_object_with_mode(struct rev_info *revs, struct object *obj, const char *name, unsigned mode)
+static void add_pending_object_with_mode(struct rev_info *revs,
+ struct object *obj,
+ const char *name, unsigned mode)
{
if (!obj)
return;
@@ -210,7 +215,8 @@ static void add_pending_object_with_mode(struct rev_info *revs, struct object *o
add_object_array_with_mode(obj, name, &revs->pending, mode);
}
-void add_pending_object(struct rev_info *revs, struct object *obj, const char *name)
+void add_pending_object(struct rev_info *revs,
+ struct object *obj, const char *name)
{
add_pending_object_with_mode(revs, obj, name, S_IFINVALID);
}
@@ -227,7 +233,9 @@ void add_head_to_pending(struct rev_info *revs)
add_pending_object(revs, obj, "HEAD");
}
-static struct object *get_reference(struct rev_info *revs, const char *name, const unsigned char *sha1, unsigned int flags)
+static struct object *get_reference(struct rev_info *revs, const char *name,
+ const unsigned char *sha1,
+ unsigned int flags)
{
struct object *object;
@@ -248,7 +256,8 @@ void add_pending_sha1(struct rev_info *revs, const char *name,
add_pending_object(revs, object, name);
}
-static struct commit *handle_commit(struct rev_info *revs, struct object *object, const char *name)
+static struct commit *handle_commit(struct rev_info *revs,
+ struct object *object, const char *name)
{
unsigned long flags = object->flags;
@@ -443,7 +452,8 @@ static void file_change(struct diff_options *options,
DIFF_OPT_SET(options, HAS_CHANGES);
}
-static int rev_compare_tree(struct rev_info *revs, struct commit *parent, struct commit *commit)
+static int rev_compare_tree(struct rev_info *revs,
+ struct commit *parent, struct commit *commit)
{
struct tree *t1 = parent->tree;
struct tree *t2 = commit->tree;
@@ -1129,6 +1139,10 @@ static int limit_list(struct rev_info *revs)
return 0;
}
+/*
+ * Add an entry to refs->cmdline with the specified information.
+ * *name is copied.
+ */
static void add_rev_cmdline(struct rev_info *revs,
struct object *item,
const char *name,
@@ -1140,7 +1154,7 @@ static void add_rev_cmdline(struct rev_info *revs,
ALLOC_GROW(info->rev, nr + 1, info->alloc);
info->rev[nr].item = item;
- info->rev[nr].name = name;
+ info->rev[nr].name = xstrdup(name);
info->rev[nr].whence = whence;
info->rev[nr].flags = flags;
info->nr++;
@@ -1526,7 +1540,7 @@ static void read_revisions_from_stdin(struct rev_info *revs,
}
die("options not supported in --stdin mode");
}
- if (handle_revision_arg(xstrdup(sb.buf), revs, 0,
+ if (handle_revision_arg(sb.buf, revs, 0,
REVARG_CANNOT_BE_FILENAME))
die("bad revision '%s'", sb.buf);
}
@@ -2853,25 +2867,23 @@ static struct commit *get_revision_1(struct rev_info *revs)
return NULL;
}
-static void gc_boundary(struct object_array *array)
+/*
+ * Return true for entries that have not yet been shown. (This is an
+ * object_array_each_func_t.)
+ */
+static int entry_unshown(struct object_array_entry *entry, void *cb_data_unused)
{
- unsigned nr = array->nr;
- unsigned alloc = array->alloc;
- struct object_array_entry *objects = array->objects;
+ return !(entry->item->flags & SHOWN);
+}
- if (alloc <= nr) {
- unsigned i, j;
- for (i = j = 0; i < nr; i++) {
- if (objects[i].item->flags & SHOWN)
- continue;
- if (i != j)
- objects[j] = objects[i];
- j++;
- }
- for (i = j; i < nr; i++)
- objects[i].item = NULL;
- array->nr = j;
- }
+/*
+ * If array is on the verge of a realloc, garbage-collect any entries
+ * that have already been shown to try to free up some space.
+ */
+static void gc_boundary(struct object_array *array)
+{
+ if (array->nr == array->alloc)
+ object_array_filter(array, entry_unshown, NULL);
}
static void create_boundary_commit_list(struct rev_info *revs)