From f80171e07950e93f1dc86af9327c2e998e2fad4b Mon Sep 17 00:00:00 2001
From: Howard Chu <hyc@symas.com>
Date: Mon, 11 Mar 2013 06:04:54 -0700
Subject: [PATCH] Check for MADV_RANDOM

Android supports madvise but not posix_madvise
---
 libraries/liblmdb/mdb.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c
index 5eed96f..1d361a7 100644
--- a/libraries/liblmdb/mdb.c
+++ b/libraries/liblmdb/mdb.c
@@ -2871,8 +2871,14 @@ mdb_env_open2(MDB_env *env)
 		return ErrCode();
 	}
 	/* Turn off readahead. It's harmful when the DB is larger than RAM. */
+#ifdef MADV_RANDOM
+	madvise(env->me_map, env->me_mapsize, MADV_RANDOM);
+#else
+#ifdef POSIX_MADV_RANDOM
 	posix_madvise(env->me_map, env->me_mapsize, POSIX_MADV_RANDOM);
-#endif
+#endif /* POSIX_MADV_RANDOM */
+#endif /* MADV_RANDOM */
+#endif /* _WIN32 */
 
 	if (newenv) {
 		if (flags & MDB_FIXEDMAP)