From 7f0bc778c88ab2f565cc05d5d3d5ee4c8d1388a1 Mon Sep 17 00:00:00 2001
From: Jamey Sharp <jamey@minilop.net>
Date: Thu, 23 Feb 2006 22:41:59 -0800
Subject: Factor padding out of _xcb_out_write_block and into its callers,
 XCBSendRequest and write_setup. This requires dynamically allocating memory
 in XCBSendRequest, but this malloc/free pair turns out to cause a 30% speed
 hit for the 'x11perf -noop' test -- so for the moment I use alloca where
 available and fall back to malloc on other platforms. Later I think I'll
 change the contract of XCBSendRequest so the caller is responsible for memory
 allocation, because the caller ought to always be able to stack-allocate
 here.

---
 configure.ac | 1 +
 1 file changed, 1 insertion(+)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 5e4405c..a07a89e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -45,6 +45,7 @@ AC_MSG_RESULT($XCBPROTO_XCBINCLUDEDIR)
 AC_SUBST(XCBPROTO_XCBINCLUDEDIR)
 
 AC_HEADER_STDC
+AC_FUNC_ALLOCA
 AC_SEARCH_LIBS(gethostbyname, nsl)
 AC_SEARCH_LIBS(connect, socket)
 
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