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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "name_collection.h"
#include <assert.h>
namespace vespalib {
namespace metrics {
using Guard = std::lock_guard<std::mutex>;
const vespalib::string &
NameCollection::lookup(size_t id) const
{
Guard guard(_lock);
assert(id < _names_by_id.size());
return _names_by_id[id]->first;
}
size_t
NameCollection::resolve(const vespalib::string& name)
{
Guard guard(_lock);
size_t nextId = _names_by_id.size();
auto iter_check = _names.emplace(name, nextId);
if (iter_check.second) {
_names_by_id.push_back(iter_check.first);
}
return iter_check.first->second;
}
size_t
NameCollection::size() const
{
Guard guard(_lock);
return _names_by_id.size();
}
} // namespace vespalib::metrics
} // namespace vespalib
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