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f63cf33118
* Header-only! * No external dependencies or other beast modules * Compilation options allow for: - Stand-alone application to run a single test suite - Stand-alone application to run a set of test suites - Global suite of tests inline with the host application - Disable test suite generation completely * Existing tests reworked to use the new classes
127 lines
3.0 KiB
C++
127 lines
3.0 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of Beast: https://github.com/vinniefalco/Beast
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Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#ifndef BEAST_INSIGHT_COUNTER_H_INCLUDED
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#define BEAST_INSIGHT_COUNTER_H_INCLUDED
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#include "Base.h"
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#include "CounterImpl.h"
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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 measuring an integral value.
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A counter is a gauge calculated at the server. The owner of the counter
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may increment and decrement the value by an amount.
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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 Counter : public Base
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{
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public:
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typedef CounterImpl::value_type 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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Counter ()
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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 Counter (std::shared_ptr <CounterImpl> const& impl)
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: m_impl (impl)
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{
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}
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/** Increment the counter. */
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/** @{ */
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void
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increment (value_type amount) const
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{
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if (m_impl)
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m_impl->increment (amount);
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}
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Counter const&
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operator+= (value_type amount) const
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{
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increment (amount);
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return *this;
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}
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Counter const&
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operator-= (value_type amount) const
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{
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increment (-amount);
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return *this;
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}
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Counter const&
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operator++ () const
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{
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increment (1);
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return *this;
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}
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Counter const&
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operator++ (int) const
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{
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increment (1);
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return *this;
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}
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Counter const&
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operator-- () const
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{
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increment (-1);
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return *this;
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}
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Counter const&
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operator-- (int) const
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{
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increment (-1);
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return *this;
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}
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/** @} */
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std::shared_ptr <CounterImpl> 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 <CounterImpl> m_impl;
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};
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}
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}
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#endif
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