From 04d24b3168f1b30ce52f3e6e0cdd3e5ff9ff24c4 Mon Sep 17 00:00:00 2001
From: Yukihiro Matsumoto <matz@ruby-lang.org>
Date: Thu, 28 Jun 2012 15:07:11 +0900
Subject: always define POOL_ALIGNMENT (default 4); reduce strength as well;
 close #333

---
 src/pool.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

(limited to 'src/pool.c')

diff --git a/src/pool.c b/src/pool.c
index 3cbb2b163..612bbe647 100644
--- a/src/pool.c
+++ b/src/pool.c
@@ -8,6 +8,18 @@
 #include <stddef.h>
 #include <string.h>
 
+/* configuration section */
+/* allcated memory address should be multiple of POOL_ALLOC_ALIGN */
+/* or undef it if alignment does not matter */
+#ifndef POOL_ALIGNMENT
+#define POOL_ALIGNMENT 4
+#endif
+/* page size of memory pool */
+#ifndef POOL_PAGE_SIZE
+#define POOL_PAGE_SIZE 16000
+#endif
+/* end of configuration section */
+
 struct mrb_pool_page {
   struct mrb_pool_page *next;
   size_t offset;
@@ -29,10 +41,8 @@ struct mrb_pool {
 #define mrb_free(m,p) free(p)
 #endif
 
-#define POOL_PAGE_SIZE 16000
-
-#ifdef ALLOC_ALIGN
-#  define ALIGN_PADDING(x) ((x % ALLOC_ALIGN) ? ALLOC_ALIGN - (x % ALLOC_ALIGN) : 0)
+#ifdef POOL_ALIGNMENT
+#  define ALIGN_PADDING(x) ((-x) & (POOL_ALIGNMENT - 1))
 #else
 #  define ALIGN_PADDING(x) (0)
 #endif
-- 
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