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85 lines
2.2 KiB
C++
85 lines
2.2 KiB
C++
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2020 Software Radio Systems Limited
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the distribution.
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*
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*/
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#ifndef SRSLOG_EVENT_TRACE_H
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#define SRSLOG_EVENT_TRACE_H
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#include <chrono>
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#include <string>
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namespace srslog {
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class log_channel;
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/// The event tracing framework allows to trace any kind of event inside an
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/// application.
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/// To enable event tracing the ENABLE_SRSLOG_EVENT_TRACE macro symbol should
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/// be defined, otherwise calls to the tracing framework will be ignored. This
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/// is important to avoid the overhead of tracing when it is not required.
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/// For details about each event trace type please refer to:
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/// https://docs.google.com/document/d/1CvAClvFfyA5R-PhYUmn5OOQtYMH4h6I0nSsKchNAySU/edit
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/// Initializes the event trace framework saving the trace events to a
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/// "event_trace.log" file.
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void event_trace_init();
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/// Initializes the event trace framework using the specified log channel to log
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/// all trace events.
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void event_trace_init(log_channel& c);
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#ifdef ENABLE_SRSLOG_EVENT_TRACE
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/// Generates the begin phase of a duration event.
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void trace_duration_begin(const std::string& category, const std::string& name);
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/// Generates the end phase of a duration event.
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void trace_duration_end(const std::string& category, const std::string& name);
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/// Generates a complete event.
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#define trace_complete_event(C, N) \
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auto scoped_complete_event_variable = detail::scoped_complete_event(C, N)
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#else
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/// No-ops.
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#define trace_duration_begin(C, N)
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#define trace_duration_end(C, N)
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#define trace_complete_event(C, N)
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#endif
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namespace detail {
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/// Scoped type object for implementing a complete event.
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class scoped_complete_event
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{
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public:
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scoped_complete_event(std::string cat, std::string n) :
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category(std::move(cat)),
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name(std::move(n)),
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start(std::chrono::steady_clock::now())
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{}
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~scoped_complete_event();
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private:
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const std::string category;
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const std::string name;
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std::chrono::time_point<std::chrono::steady_clock> start;
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};
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} // namespace detail
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} // namespace srslog
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#endif // SRSLOG_EVENT_TRACE_H
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