From 5ff9fa6205e21c4f3ae3a1545e9f826aa1c6a331 Mon Sep 17 00:00:00 2001
From: Tor Egge <Tor.Egge@online.no>
Date: Mon, 14 Feb 2022 13:52:49 +0100
Subject: mallopt is linux specific.

---
 staging_vespalib/src/vespa/vespalib/util/malloc_mmap_guard.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/staging_vespalib/src/vespa/vespalib/util/malloc_mmap_guard.cpp b/staging_vespalib/src/vespa/vespalib/util/malloc_mmap_guard.cpp
index 0ced160fda2..67181dfd16f 100644
--- a/staging_vespalib/src/vespa/vespalib/util/malloc_mmap_guard.cpp
+++ b/staging_vespalib/src/vespa/vespalib/util/malloc_mmap_guard.cpp
@@ -1,7 +1,9 @@
 // Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
 #include "malloc_mmap_guard.h"
 #include <vespa/vespalib/util/size_literals.h>
+#ifdef __linux__
 #include <malloc.h>
+#endif
 #include <limits>
 #include <cassert>
 
@@ -10,14 +12,20 @@ namespace vespalib {
 MallocMmapGuard::MallocMmapGuard(size_t mmapLimit) :
     _threadId(std::this_thread::get_id())
 {
+#ifdef __linux__
     int limit = mmapLimit <= std::numeric_limits<int>::max() ? mmapLimit : std::numeric_limits<int>::max();
     mallopt(M_MMAP_THRESHOLD, limit);
+#else
+    (void) mmapLimit;
+#endif
 }
 
 MallocMmapGuard::~MallocMmapGuard()
 {
     assert(_threadId == std::this_thread::get_id());
+#ifdef __linux__
     mallopt(M_MMAP_THRESHOLD, 1_Gi);
+#endif
 }
 
 }
-- 
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