hashtab: allow override max fill

diff --git a/usual/hashtab-impl.h b/usual/hashtab-impl.h
index de5cdf33c0559190006d1d1820abee5bb2139a7e..a9482a6ab82b850c70fc8b732f8df6ce2bf9da1f 100644 (file)
--- a/usual/hashtab-impl.h
+++ b/usual/hashtab-impl.h
@@ -57,10 +57,14 @@ struct HashItem {
 
 typedef bool (*hash_cmp_fn)(const htab_val_t curval, const void *arg);
 
+#ifndef HTAB_MAX_FILL
+#define HTAB_MAX_FILL 75
+#endif
+
 #define MASK(h) ((h)->size - 1)
 #define CALC_POS(h, key) (key & MASK(h))
 #define NEXT_POS(h, pos) (((pos) * 5 + 1) & MASK(h))
-#define MAX_USED(h) ((h)->size * 75 / 100)
+#define MAX_USED(h) ((h)->size * HTAB_MAX_FILL / 100)
 
 struct HashTab {
        struct HashTab *next;