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<h1>Source code for torch.profiler.itt</h1><div class="highlight"><pre>
<span></span><span class="c1"># mypy: allow-untyped-defs</span>
<span class="kn">from</span> <span class="nn">contextlib</span> <span class="kn">import</span> <span class="n">contextmanager</span>
<span class="k">try</span><span class="p">:</span>
<span class="kn">from</span> <span class="nn">torch._C</span> <span class="kn">import</span> <span class="n">_itt</span>
<span class="k">except</span> <span class="ne">ImportError</span><span class="p">:</span>
<span class="k">class</span> <span class="nc">_ITTStub</span><span class="p">:</span>
<span class="nd">@staticmethod</span>
<span class="k">def</span> <span class="nf">_fail</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span>
<span class="s2">"ITT functions not installed. Are you sure you have a ITT build?"</span>
<span class="p">)</span>
<span class="nd">@staticmethod</span>
<span class="k">def</span> <span class="nf">is_available</span><span class="p">():</span>
<span class="k">return</span> <span class="kc">False</span>
<span class="n">rangePush</span> <span class="o">=</span> <span class="n">_fail</span>
<span class="n">rangePop</span> <span class="o">=</span> <span class="n">_fail</span>
<span class="n">mark</span> <span class="o">=</span> <span class="n">_fail</span>
<span class="n">_itt</span> <span class="o">=</span> <span class="n">_ITTStub</span><span class="p">()</span> <span class="c1"># type: ignore[assignment]</span>
<span class="n">__all__</span> <span class="o">=</span> <span class="p">[</span><span class="s2">"is_available"</span><span class="p">,</span> <span class="s2">"range_push"</span><span class="p">,</span> <span class="s2">"range_pop"</span><span class="p">,</span> <span class="s2">"mark"</span><span class="p">,</span> <span class="s2">"range"</span><span class="p">]</span>
<div class="viewcode-block" id="is_available"><a class="viewcode-back" href="../../../profiler.html#torch.profiler.itt.is_available">[docs]</a><span class="k">def</span> <span class="nf">is_available</span><span class="p">():</span>
<span class="w"> </span><span class="sd">"""</span>
<span class="sd"> Check if ITT feature is available or not</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="n">_itt</span><span class="o">.</span><span class="n">is_available</span><span class="p">()</span></div>
<div class="viewcode-block" id="range_push"><a class="viewcode-back" href="../../../profiler.html#torch.profiler.itt.range_push">[docs]</a><span class="k">def</span> <span class="nf">range_push</span><span class="p">(</span><span class="n">msg</span><span class="p">):</span>
<span class="w"> </span><span class="sd">"""</span>
<span class="sd"> Pushes a range onto a stack of nested range span. Returns zero-based</span>
<span class="sd"> depth of the range that is started.</span>
<span class="sd"> Arguments:</span>
<span class="sd"> msg (str): ASCII message to associate with range</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="n">_itt</span><span class="o">.</span><span class="n">rangePush</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span></div>
<div class="viewcode-block" id="range_pop"><a class="viewcode-back" href="../../../profiler.html#torch.profiler.itt.range_pop">[docs]</a><span class="k">def</span> <span class="nf">range_pop</span><span class="p">():</span>
<span class="w"> </span><span class="sd">"""</span>
<span class="sd"> Pops a range off of a stack of nested range spans. Returns the</span>
<span class="sd"> zero-based depth of the range that is ended.</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="n">_itt</span><span class="o">.</span><span class="n">rangePop</span><span class="p">()</span></div>
<div class="viewcode-block" id="mark"><a class="viewcode-back" href="../../../profiler.html#torch.profiler.itt.mark">[docs]</a><span class="k">def</span> <span class="nf">mark</span><span class="p">(</span><span class="n">msg</span><span class="p">):</span>
<span class="w"> </span><span class="sd">"""</span>
<span class="sd"> Describe an instantaneous event that occurred at some point.</span>
<span class="sd"> Arguments:</span>
<span class="sd"> msg (str): ASCII message to associate with the event.</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="n">_itt</span><span class="o">.</span><span class="n">mark</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span></div>
<span class="nd">@contextmanager</span>
<span class="k">def</span> <span class="nf">range</span><span class="p">(</span><span class="n">msg</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
<span class="w"> </span><span class="sd">"""</span>
<span class="sd"> Context manager / decorator that pushes an ITT range at the beginning</span>
<span class="sd"> of its scope, and pops it at the end. If extra arguments are given,</span>
<span class="sd"> they are passed as arguments to msg.format().</span>
<span class="sd"> Args:</span>
<span class="sd"> msg (str): message to associate with the range</span>
<span class="sd"> """</span>
<span class="n">range_push</span><span class="p">(</span><span class="n">msg</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">))</span>
<span class="k">try</span><span class="p">:</span>
<span class="k">yield</span>
<span class="k">finally</span><span class="p">:</span>
<span class="n">range_pop</span><span class="p">()</span>
</pre></div>
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