From b2740577e4d006acbe29061cf39bd00afb7b377f Mon Sep 17 00:00:00 2001
From: Keith Rarick <kr@xph.us>
Date: Wed, 13 May 2009 01:13:08 -0700
Subject: [PATCH] Step one for preallocation on several platforms.

---
 binlog.c     | 6 ++++++
 configure.in | 2 ++
 2 files changed, 8 insertions(+)

diff --git a/binlog.c b/binlog.c
index afec207..e325414 100644
--- a/binlog.c
+++ b/binlog.c
@@ -34,6 +34,7 @@
 #include "job.h"
 #include "binlog.h"
 #include "util.h"
+#include "config.h"
 
 /* max size we will create a log file */
 size_t binlog_size_limit = 10 << 20;
@@ -285,7 +286,12 @@ binlog_open(binlog log)
 
     if (fd < 0) return twarn("Cannot open binlog %s", log->path), -1;
 
+#ifdef HAVE_POSIX_FALLOCATE
     r = posix_fallocate(fd, 0, binlog_size_limit);
+#else
+    #warning no known method to preallocate files on this platform
+    r = 0;
+#endif
     if (r) {
         close(fd);
         binlog_dref(log);
diff --git a/configure.in b/configure.in
index f011f48..3bc2495 100644
--- a/configure.in
+++ b/configure.in
@@ -100,6 +100,8 @@ else
   CFLAGS="$CFLAGS -I$LIBEVENT_DIR/include"
   LIBS="$LIBS -levent"
 
+  AC_CHECK_FUNCS([posix_fallocate])
+
   AC_CHECK_LIB([socket], [bind], [
     LIBS="$LIBS -lsocket"
   ])
-- 
2.11.4.GIT