attr: eliminate global check_all_attr array

Currently there is a reliance on 'check_all_attr' which is a global
array of 'attr_check_item' items which is used to store the value of
each attribute during the collection process.

This patch eliminates this global and instead creates an array per
'attr_check' instance which is then used in the attribute collection
process.  This brings the attribute system one step closer to being
thread-safe.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/attr.h b/attr.h
index 898e1a8c99..5aaf55c3e3 100644
--- a/attr.h
+++ b/attr.h
@@ -4,6 +4,9 @@
 /* An attribute is a pointer to this opaque structure */
 struct git_attr;
 
+/* opaque structure used internally for attribute collection */
+struct all_attrs_item;
+
 /*
  * Given a string, return the gitattribute object that
  * corresponds to it.
@@ -33,6 +36,8 @@ struct attr_check {
 	int nr;
 	int alloc;
 	struct attr_check_item *items;
+	int all_attrs_nr;
+	struct all_attrs_item *all_attrs;
 };
 
 extern struct attr_check *attr_check_alloc(void);