update

os_win32.cpp

@@ -4,17 +4,18 @@
 #include "os.h"
 #include "Windows.h" 
 
-void *osAlloc(size_t capacity) {
-    return VirtualAlloc(NULL, sizeof(Arena) + capacity, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
+void *os_alloc(size_t commitSize) {
+    return VirtualAlloc(NULL, commitSize, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
 }
 
-void osReserve(void *ptr) {
+void os_reserve(void *ptr) {
 }
 
-void osDecommit(void *ptr) {
+void os_decommit(void *ptr) {
 }
 
-void osFree(void *ptr) {
+void os_free(void *ptr, size_t size) {
+    VirtualFree(ptr, NULL, MEM_RELEASE);
 }
 
 #endif