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34ef577604
This change replaces all include guards in the `src/` and `include/` directories by `#pragma once`.
63 lines
1.5 KiB
C++
63 lines
1.5 KiB
C++
#pragma once
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#include <xrpl/beast/insight/EventImpl.h>
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#include <chrono>
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#include <memory>
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namespace beast {
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namespace insight {
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/** A metric for reporting event timing.
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An event is an operation that has an associated millisecond time, or
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other integral value. Because events happen at a specific moment, the
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metric only supports a push-style interface.
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This is a lightweight reference wrapper which is cheap to copy and assign.
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When the last reference goes away, the metric is no longer collected.
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*/
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class Event final
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{
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public:
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using value_type = EventImpl::value_type;
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/** Create a null metric.
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A null metric reports no information.
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*/
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Event()
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{
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}
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/** Create the metric reference the specified implementation.
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Normally this won't be called directly. Instead, call the appropriate
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factory function in the Collector interface.
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@see Collector.
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*/
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explicit Event(std::shared_ptr<EventImpl> const& impl) : m_impl(impl)
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{
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}
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/** Push an event notification. */
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template <class Rep, class Period>
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void
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notify(std::chrono::duration<Rep, Period> const& value) const
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{
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using namespace std::chrono;
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if (m_impl)
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m_impl->notify(ceil<value_type>(value));
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}
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std::shared_ptr<EventImpl> const&
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impl() const
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{
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return m_impl;
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}
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private:
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std::shared_ptr<EventImpl> m_impl;
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};
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} // namespace insight
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} // namespace beast
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