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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
/**
* \class storage::framework::Clock
* \ingroup clock
*
* \brief Class used to attain current time.
*
* This class wraps how the time is retrieved. A common clock is useful in order
* to let unit tests fake time. It is also useful to have one point for all
* time calculations, such that one can possibly optimize if time retrieval
* becomes a bottle neck.
*/
#pragma once
#include <vespa/vespalib/util/time.h>
namespace storage::framework {
struct Clock {
virtual ~Clock() = default;
// Time point resolution is intentionally not defined here.
[[nodiscard]] virtual vespalib::steady_time getMonotonicTime() const = 0;
[[nodiscard]] virtual vespalib::system_time getSystemTime() const = 0;
};
}
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