treewide: rename 'struct exclude_list' to 'struct pattern_list'

diff --git a/cache.h b/cache.h
index bf20337ef435234acf171f76137e683e66fb22d2..cf5d70c19622c6087be53f569c6ab8e9720fdb67 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -660,6 +660,9 @@ int daemonize(void);
  * at least 'nr' entries; the number of entries currently allocated
  * is 'alloc', using the standard growing factor alloc_nr() macro.
  *
+ * Consider using ALLOC_GROW_BY instead of ALLOC_GROW as it has some
+ * added niceties.
+ *
  * DO NOT USE any expression with side-effect for 'x', 'nr', or 'alloc'.
  */
 #define ALLOC_GROW(x, nr, alloc) \
@@ -673,6 +676,25 @@ int daemonize(void);
                } \
        } while (0)
 
+/*
+ * Similar to ALLOC_GROW but handles updating of the nr value and
+ * zeroing the bytes of the newly-grown array elements.
+ *
+ * DO NOT USE any expression with side-effect for any of the
+ * arguments.
+ */
+#define ALLOC_GROW_BY(x, nr, increase, alloc) \
+       do { \
+               if (increase) { \
+                       size_t new_nr = nr + (increase); \
+                       if (new_nr < nr) \
+                               BUG("negative growth in ALLOC_GROW_BY"); \
+                       ALLOC_GROW(x, new_nr, alloc); \
+                       memset((x) + nr, 0, sizeof(*(x)) * (increase)); \
+                       nr = new_nr; \
+               } \
+       } while (0)
+
 /* Initialize and use the cache information */
 struct lock_file;
 void preload_index(struct index_state *index,