From a9e607158671c1d8625125a58bbd40dd18acb8b5 Mon Sep 17 00:00:00 2001
From: in2 <in2@63ad8ddf-47c3-0310-b6dd-a9e9d9715204>
Date: Wed, 10 Aug 2005 08:35:32 +0000
Subject: user defined SHMALIGNEDSIZE.

git-svn-id: http://opensvn.csie.org/pttbbs/trunk/pttbbs@3023 63ad8ddf-47c3-0310-b6dd-a9e9d9715204
---
 include/pttstruct.h | 4 ++--
 sample/pttbbs.conf  | 6 ++++++
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/include/pttstruct.h b/include/pttstruct.h
index 7c5a12a6..1167fb33 100644
--- a/include/pttstruct.h
+++ b/include/pttstruct.h
@@ -586,8 +586,8 @@ typedef struct {
 #endif    
 } SHM_t;
 
-#ifdef USE_HUGETLB // 4MB aligned
-#   define SHMSIZE (sizeof(SHM_t)/(1048576*4)+1)*1048576*4
+#ifdef SHMALIGNEDSIZE
+#   define SHMSIZE (sizeof(SHM_t)/(SHMALIGNEDSIZE)+1)*SHMALIGNEDSIZE
 #else
 #   define SHMSIZE (sizeof(SHM_t))
 #endif
diff --git a/sample/pttbbs.conf b/sample/pttbbs.conf
index 7715ce5a..37101764 100644
--- a/sample/pttbbs.conf
+++ b/sample/pttbbs.conf
@@ -150,6 +150,12 @@
 /* 使用 HUGETLB shared memory . 目前只在 Linux 上有效 */
 //#define USE_HUGETLB
 
+/* 在某些平台之下, shared-memory規定需要為一定的 aligned size,
+   如在 linux x86_64 下使用 HUGETLB 時需為 4MB aligned,
+   而在 linux ia64 下使用 HUGETLB時需為 256MB aligned.
+   單位為 bytes */
+//#define SHMALIGNEDSIZE (1048576*4) // 4MB for x86_64
+
 /* 讓過於熱門或被鬧的版冷靜, SHM 會變大一些些 */
 #define USE_COOLDOWN
 
-- 
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