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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <vespa/vespalib/stllike/string.h>
#include <memory>
#include <atomic>
namespace vespalib::alloc {
class MemoryAllocator;
/*
* Class for creating an mmap file allocator on demand.
*/
class MmapFileAllocatorFactory {
vespalib::string _dir_name;
std::atomic<uint64_t> _generation;
MmapFileAllocatorFactory();
~MmapFileAllocatorFactory();
MmapFileAllocatorFactory(const MmapFileAllocatorFactory &) = delete;
MmapFileAllocatorFactory& operator=(const MmapFileAllocatorFactory &) = delete;
public:
void setup(const vespalib::string &dir_name);
std::unique_ptr<MemoryAllocator> make_memory_allocator(const vespalib::string& name);
static MmapFileAllocatorFactory& instance();
};
}
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