From 868aa4c14ab6c63b9b797f4a8178c73b69897711 Mon Sep 17 00:00:00 2001
From: gingerBill <bill@gingerbill.org>
Date: Sat, 14 Jan 2023 12:58:45 +0000
Subject: Minor changes to `StringMap` allocation

---
 src/string_map.cpp | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

(limited to 'src/string_map.cpp')

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);
 }
 
 
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