From f7a669d342c96451a3e0be84e2e51af8631f90ec Mon Sep 17 00:00:00 2001
From: gingerBill <ginger.bill.22@gmail.com>
Date: Sat, 9 Jul 2016 00:31:57 +0100
Subject: Initial release version * Code cleanup * Fix some TODOs * Reduce heap
 allocation use and replace with arena allocation

---
 src/common.cpp | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'src/common.cpp')

diff --git a/src/common.cpp b/src/common.cpp
index 7b8f7cf02..7d7bed316 100644
--- a/src/common.cpp
+++ b/src/common.cpp
@@ -46,6 +46,23 @@ gb_inline u64 hash_pointer(void *ptr) {
 	return p;
 }
 
+
+
+// Doubly Linked Lists
+
+#define DLIST_SET(curr_element, next_element)  do { \
+	(curr_element)->next = (next_element);             \
+	(curr_element)->next->prev = (curr_element);       \
+	(curr_element) = (curr_element)->next;             \
+} while (0)
+
+#define DLIST_APPEND(root_element, curr_element, next_element) do { \
+	if ((root_element) == NULL) \
+		(root_element) = (curr_element) = (next_element); \
+	else \
+		DLIST_SET(curr_element, next_element); \
+} while (0)
+
 ////////////////////////////////////////////////////////////////
 //
 // Generic Data Structures
-- 
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