Use MADV_DONTDUMP on Linux, equiv to MAP_NOCORE on BSD

1 files changed, 5 insertions, 1 deletions

diff --git a/src/lib/alloc/locking_allocator/locking_allocator.cpp b/src/lib/alloc/locking_allocator/locking_allocator.cpp
index 8e3f7e142..4b66ea018 100644
--- a/src/lib/alloc/locking_allocator/locking_allocator.cpp
+++ b/src/lib/alloc/locking_allocator/locking_allocator.cpp
@@ -1,6 +1,6 @@
 /*
 * Mlock Allocator
-* (C) 2012 Jack Lloyd
+* (C) 2012,2014 Jack Lloyd
 *
 * Distributed under the terms of the Botan license
 */
@@ -250,6 +250,10 @@ mlock_allocator::mlock_allocator() :
          throw std::runtime_error("Could not mlock " + std::to_string(m_poolsize) + " bytes");
          }
 
+#if defined(MADV_DONTDUMP)
+      ::madvise(m_pool, m_poolsize, MADV_DONTDUMP);
+#endif
+
       m_freelist.push_back(std::make_pair(0, m_poolsize));
       }
    }