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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "mmap_file_allocator_factory.h"
#include "mmap_file_allocator.h"
#include <vespa/vespalib/stllike/asciistream.h>
#include <filesystem>
namespace vespalib::alloc {
MmapFileAllocatorFactory::MmapFileAllocatorFactory()
: _dir_name(),
_generation(0)
{
}
MmapFileAllocatorFactory::~MmapFileAllocatorFactory()
{
}
void
MmapFileAllocatorFactory::setup(const vespalib::string& dir_name)
{
_dir_name = dir_name;
_generation = 0;
if (!_dir_name.empty()) {
std::filesystem::remove_all(std::filesystem::path(_dir_name));
}
}
std::unique_ptr<MemoryAllocator>
MmapFileAllocatorFactory::make_memory_allocator(const vespalib::string& name)
{
if (_dir_name.empty()) {
return {};
}
vespalib::asciistream os;
os << _dir_name << "/" << _generation.fetch_add(1) << "." << name;
return std::make_unique<MmapFileAllocator>(os.str());
};
MmapFileAllocatorFactory&
MmapFileAllocatorFactory::instance()
{
static MmapFileAllocatorFactory instance;
return instance;
}
}
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