.. _program_listing_file_include_opentelemetry_trace_default_tracer.h:

Program Listing for File default_tracer.h
=========================================

|exhale_lsh| :ref:`Return to documentation for file <file_include_opentelemetry_trace_default_tracer.h>` (``include/opentelemetry/trace/default_tracer.h``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   #pragma once
   #include "opentelemetry/nostd/unique_ptr.h"
   #include "opentelemetry/trace/default_span.h"
   #include "opentelemetry/trace/span.h"
   #include "opentelemetry/trace/tracer.h"
   
   OPENTELEMETRY_BEGIN_NAMESPACE
   namespace trace
   {
   class DefaultTracer : public Tracer
   {
   public:
     ~DefaultTracer() = default;
   
     nostd::unique_ptr<Span> StartSpan(nostd::string_view name,
                                       const common::KeyValueIterable &attributes,
                                       const StartSpanOptions &options = {}) override noexcept
     {
       return nostd::unique_ptr<Span>(new DefaultSpan::GetInvalid());
     }
   
     void ForceFlushWithMicroseconds(uint64_t timeout) override noexcept {}
   
     void CloseWithMicroseconds(uint64_t timeout) override noexcept {}
   };
   }  // namespace trace
   OPENTELEMETRY_END_NAMESPACE