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// 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>
#include <malloc.h>
#include <limits>
#include <cassert>
namespace vespalib {
MallocMmapGuard::MallocMmapGuard(size_t mmapLimit) :
_threadId(std::this_thread::get_id())
{
int limit = mmapLimit <= std::numeric_limits<int>::max() ? mmapLimit : std::numeric_limits<int>::max();
mallopt(M_MMAP_THRESHOLD, limit);
}
MallocMmapGuard::~MallocMmapGuard()
{
assert(_threadId == std::this_thread::get_id());
mallopt(M_MMAP_THRESHOLD, 1_Gi);
}
}
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