refactor(base): split the arena allocator into a zero and non zero one

2 files changed, 8 insertions, 6 deletions

diff --git a/source/base/base_arena.c b/source/base/base_arena.c
index 3e9a6df..5855e5e 100755
--- a/source/base/base_arena.c
+++ b/source/base/base_arena.c
@@ -33,7 +33,7 @@ arena_destroy(mem_arena *arena)
     munmap(arena, arena->capacity + sizeof(mem_arena));
 }
 internal void *
-arena_alloc(mem_arena *arena, u64 size)
+arena_alloc(mem_arena *arena, u64 size, b32 zero)
 {
     if (!arena)
     {
@@ -51,7 +51,7 @@ arena_alloc(mem_arena *arena, u64 size)
     arena->previous_position = arena->current_position;
     arena->current_position  = aligned + size;
 
-    MemSet(out, size);
+    if (zero) MemSet(out, size);
 
     return out;
 }
@@ -88,7 +88,7 @@ arena_resize_align(mem_arena *arena, void *old_memory, u64 new_size, u64 old_siz
 
     if (old_memory == NULL || old_size == 0)
     {
-        return (mem_arena *)arena_alloc(arena, new_size);
+        return (mem_arena *)arena_alloc(arena, new_size, 0);
     }
     else if ((old_mem >= arena->base_position && old_mem < arena->base_position + arena->capacity))
     {
@@ -103,7 +103,7 @@ arena_resize_align(mem_arena *arena, void *old_memory, u64 new_size, u64 old_siz
         }
         else
         {
-            void *new_memory = arena_alloc(arena, new_size);
+            void *new_memory = arena_alloc(arena, new_size, 0);
             umm   copy_size  = old_size < new_size ? old_size : new_size;
             memmove(new_memory, old_mem, copy_size);
         }
diff --git a/source/base/base_arena.h b/source/base/base_arena.h
index fe71c24..2818ae4 100755
--- a/source/base/base_arena.h
+++ b/source/base/base_arena.h
@@ -2,8 +2,10 @@
 #define BASE_ARENA_H
 
 #define Align(pointer, alignment) align((u64)(pointer), (umm)(alignment))
-#define PushStruct(arena, type) (type *)arena_alloc((arena), sizeof(type))
-#define PushArray(arena, type, len) (type *)arena_alloc((arena), sizeof(type) * (len))
+#define PushStruct(arena, type) (type *)arena_alloc((arena), sizeof(type), 0)
+#define PushStructZero(arena, type) (type *)arena_alloc((arena), sizeof(type), 1)
+#define PushArray(arena, type, len) (type *)arena_alloc((arena), sizeof(type) * (len), 0)
+#define PushArrayZero(arena, type, len) (type *)arena_alloc((arena), sizeof(type) * (len), 1)
 
 typedef struct mem_arena  mem_arena;
 struct mem_arena