add extent_nfree_sub

2018-10-29 15:09:21 -07:00
parent 4b82872ebf
commit 17aa470760
2 changed files with 7 additions and 1 deletions
--- a/include/jemalloc/internal/extent_inlines.h
+++ b/include/jemalloc/internal/extent_inlines.h
@@ -264,6 +264,12 @@ extent_nfree_dec(extent_t *extent) {
 	extent->e_bits -= ((uint64_t)1U << EXTENT_BITS_NFREE_SHIFT);
 }

+static inline void
+extent_nfree_sub(extent_t *extent, uint64_t n) {
+	assert(extent_slab_get(extent));
+	extent->e_bits -= (n << EXTENT_BITS_NFREE_SHIFT);
+}
+
 static inline void
 extent_sn_set(extent_t *extent, size_t sn) {
 	extent->e_bits = (extent->e_bits & ~EXTENT_BITS_SN_MASK) |