From f537673ea22e4f127a5afdd276f646e992a618c3 Mon Sep 17 00:00:00 2001
From: cinnaboot <cinnaboot@protonmail.com>
Date: Tue, 1 Feb 2022 12:39:34 -0500
Subject: [PATCH] track arena free size when allocating blocks

---
 src/util.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/util.h b/src/util.h
index 205e572..9581f9b 100644
--- a/src/util.h
+++ b/src/util.h
@@ -25,6 +25,7 @@ u64 utilFNV64a_str(const char* str, u64 hval = FNV1_64_INIT);
 struct MemoryArena
 {
 	size_t max_size;
+	size_t free_size;
 	void* head;
 	void* next_free;
 };
@@ -117,6 +118,7 @@ arenaAllocateBlock(MemoryArena* arena, size_t block_size)
 	assert(block_size > 0);
 	void* ret = arena->next_free;
 	arena->next_free = (uint8_t*) arena->next_free + block_size;
+	arena->free_size = arenaGetFreeSize(arena);
 	return ret;
 }