Minor changes to `StringMap` allocation

1 files changed, 8 insertions, 2 deletions

diff --git a/src/string_map.cpp b/src/string_map.cpp
index 3bd08d09f..067adef28 100644
--- a/src/string_map.cpp
+++ b/src/string_map.cpp
@@ -1,5 +1,11 @@
 GB_STATIC_ASSERT(sizeof(MapIndex) == sizeof(u32));
 
+enum {
+	STRING_MAP_CACHE_LINE_SIZE_POW = 6,
+	STRING_MAP_CACHE_LINE_SIZE = 1<<STRING_MAP_CACHE_LINE_SIZE_POW,
+	STRING_MAP_CACHE_LINE_MASK = STRING_MAP_CACHE_LINE_SIZE-1,
+};
+
 struct StringHashKey {
 	u32    hash;
 	String string;
@@ -79,13 +85,13 @@ gb_internal gb_inline void string_map_destroy(StringMap<T> *h) {
 
 template <typename T>
 gb_internal void string_map__resize_hashes(StringMap<T> *h, usize count) {
-	h->hashes_count = cast(u32)resize_array_raw(&h->hashes, string_map_allocator(), h->hashes_count, count);
+	h->hashes_count = cast(u32)resize_array_raw(&h->hashes, string_map_allocator(), h->hashes_count, count, STRING_MAP_CACHE_LINE_SIZE);
 }
 
 
 template <typename T>
 gb_internal void string_map__reserve_entries(StringMap<T> *h, usize capacity) {
-	h->entries_capacity = cast(u32)resize_array_raw(&h->entries, string_map_allocator(), h->entries_capacity, capacity);
+	h->entries_capacity = cast(u32)resize_array_raw(&h->entries, string_map_allocator(), h->entries_capacity, capacity, STRING_MAP_CACHE_LINE_SIZE);
 }