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| <section id="timing-out-futures-f-timeout-timeoutexecutor"> |
| <h1>Timing out futures: <code class="docutils literal notranslate"><span class="pre">f_timeout</span></code>, <code class="docutils literal notranslate"><span class="pre">TimeoutExecutor</span></code><a class="headerlink" href="#timing-out-futures-f-timeout-timeoutexecutor" title="Permalink to this headline">¶</a></h1> |
| <section id="futures-api"> |
| <h2>Futures API<a class="headerlink" href="#futures-api" title="Permalink to this headline">¶</a></h2> |
| <dl class="py function"> |
| <dt class="sig sig-object py" id="more_executors.f_timeout"> |
| <span class="sig-prename descclassname"><span class="pre">more_executors.</span></span><span class="sig-name descname"><span class="pre">f_timeout</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">future</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">timeout</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#more_executors.f_timeout" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Wrap a future to cancel it after a timeout is reached.</p> |
| <p>Signature: <code class="code docutils literal notranslate"><span class="pre">Future<X>,</span> <span class="pre">float</span> <span class="pre">⟶</span> <span class="pre">Future<X></span></code></p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><ul class="simple"> |
| <li><p><strong>future</strong> (<a class="reference external" href="https://docs.python.org/3/library/concurrent.futures.html#concurrent.futures.Future" title="(in Python v3.11)"><em>Future</em></a>) – Any future.</p></li> |
| <li><p><strong>timeout</strong> (<a class="reference external" href="https://docs.python.org/3/library/functions.html#float" title="(in Python v3.11)"><em>float</em></a>) – A timeout to apply to the future, in seconds.</p></li> |
| </ul> |
| </dd> |
| <dt class="field-even">Returns</dt> |
| <dd class="field-even"><p><dl> |
| <dt><a class="reference external" href="https://docs.python.org/3/library/concurrent.futures.html#concurrent.futures.Future" title="(in Python v3.11)"><code class="xref py py-class docutils literal notranslate"><span class="pre">Future</span></code></a></dt><dd><p>A wrapped version of <code class="xref py py-obj docutils literal notranslate"><span class="pre">future</span></code> which may be cancelled if the |
| future has not completed within <code class="xref py py-obj docutils literal notranslate"><span class="pre">timeout</span></code> seconds.</p> |
| <p>Note: only a single attempt is made to cancel the future, and there |
| is no guarantee that the cancel will succeed.</p> |
| </dd> |
| </dl> |
| </p> |
| </dd> |
| </dl> |
| <div class="versionadded"> |
| <p><span class="versionmodified added">New in version 1.19.0.</span></p> |
| </div> |
| </dd></dl> |
| |
| </section> |
| <section id="executors-api"> |
| <h2>Executors API<a class="headerlink" href="#executors-api" title="Permalink to this headline">¶</a></h2> |
| <dl class="py class"> |
| <dt class="sig sig-object py" id="more_executors.TimeoutExecutor"> |
| <em class="property"><span class="pre">class</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">more_executors.</span></span><span class="sig-name descname"><span class="pre">TimeoutExecutor</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">delegate</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">timeout</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">logger</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">None</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">name</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">'default'</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#more_executors.TimeoutExecutor" title="Permalink to this definition">¶</a></dt> |
| <dd><p>An executor which delegates to another executor while applying |
| a timeout to each returned future.</p> |
| <p>For any futures returned by this executor, if the future hasn’t |
| completed approximately within <cite>timeout</cite> seconds of its creation, |
| an attempt will be made to cancel the future.</p> |
| <p>Note that only a single attempt is made to cancel any future, and there |
| is no guarantee that this will succeed.</p> |
| <div class="versionadded"> |
| <p><span class="versionmodified added">New in version 1.7.0.</span></p> |
| </div> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><ul class="simple"> |
| <li><p><strong>delegate</strong> (<a class="reference external" href="https://docs.python.org/3/library/concurrent.futures.html#concurrent.futures.Executor" title="(in Python v3.11)"><em>Executor</em></a>) – an executor to which callables are submitted</p></li> |
| <li><p><strong>timeout</strong> (<a class="reference external" href="https://docs.python.org/3/library/functions.html#float" title="(in Python v3.11)"><em>float</em></a>) – timeout (in seconds) after which <a class="reference external" href="https://docs.python.org/3/library/concurrent.futures.html#concurrent.futures.Future.cancel" title="(in Python v3.11)"><code class="xref py py-meth docutils literal notranslate"><span class="pre">concurrent.futures.Future.cancel()</span></code></a> |
| will be invoked on any generated future which has not completed</p></li> |
| <li><p><strong>logger</strong> (<a class="reference external" href="https://docs.python.org/3/library/logging.html#logging.Logger" title="(in Python v3.11)"><em>Logger</em></a>) – a logger used for messages from this executor</p></li> |
| <li><p><strong>name</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.11)"><em>str</em></a>) – a name for this executor</p></li> |
| </ul> |
| </dd> |
| </dl> |
| <div class="versionchanged"> |
| <p><span class="versionmodified changed">Changed in version 2.7.0: </span>Introduced <code class="docutils literal notranslate"><span class="pre">name</span></code>.</p> |
| </div> |
| <dl class="py method"> |
| <dt class="sig sig-object py" id="more_executors.TimeoutExecutor.submit_timeout"> |
| <span class="sig-name descname"><span class="pre">submit_timeout</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">timeout</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">fn</span></span></em>, <em class="sig-param"><span class="o"><span class="pre">*</span></span><span class="n"><span class="pre">args</span></span></em>, <em class="sig-param"><span class="o"><span class="pre">**</span></span><span class="n"><span class="pre">kwargs</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#more_executors.TimeoutExecutor.submit_timeout" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Like <code class="code docutils literal notranslate"><span class="pre">submit(fn,</span> <span class="pre">*args,</span> <span class="pre">**kwargs)</span></code>, but uses the specified |
| timeout rather than this executor’s default.</p> |
| <div class="versionadded"> |
| <p><span class="versionmodified added">New in version 1.19.0.</span></p> |
| </div> |
| </dd></dl> |
| |
| </dd></dl> |
| |
| <dl class="py method"> |
| <dt class="sig sig-object py" id="more_executors.Executors.with_timeout"> |
| <em class="property"><span class="pre">classmethod</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">Executors.</span></span><span class="sig-name descname"><span class="pre">with_timeout</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">executor</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">timeout</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">logger</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">None</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#more_executors.Executors.with_timeout" title="Permalink to this definition">¶</a></dt> |
| <dd><dl class="field-list simple"> |
| <dt class="field-odd">Returns</dt> |
| <dd class="field-odd"><p>a new executor which will attempt to cancel any futures if they’ve |
| not completed within the given timeout.</p> |
| </dd> |
| <dt class="field-even">Return type</dt> |
| <dd class="field-even"><p><a class="reference internal" href="#more_executors.TimeoutExecutor" title="more_executors.TimeoutExecutor"><em>TimeoutExecutor</em></a></p> |
| </dd> |
| </dl> |
| <div class="versionadded"> |
| <p><span class="versionmodified added">New in version 1.7.0.</span></p> |
| </div> |
| </dd></dl> |
| |
| </section> |
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| <p class="blurb">A library of composable Python executors and futures</p> |
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