https://siedentop.dev/tags/c++/ Recent content in C++ on Posts about Software Development Hugo en-us Wed, 21 Oct 2020 01:59:35 -0700 https://siedentop.dev/posts/cpp-word-count/ Wed, 21 Oct 2020 01:59:35 -0700 https://siedentop.dev/posts/cpp-word-count/ <p><a href="https://siedentop.dev/posts/swift-word-count">Yesterday&rsquo;s post</a> showed that the original C++ version is around 13 times slower than my non-optimized <a href="https://siedentop.dev/posts/rust-reputation">Rust version</a>. Next, I&rsquo;ll show how to get easily equivalent performance to Rust.</p> <p>One problem that I immediately made out when first seeing the C++ version is that it uses <code>std::regex</code>. <code>std::regex</code> is known to be horribly slow <sup id="fnref:1"><a href="#fn:1" class="footnote-ref" role="doc-noteref">1</a></sup>.</p> <p>Just replacing the checking of the file name extension with the in-built <code>e.path().extension() != &quot;.txt&quot;</code> speeds up from 373 ms to 52ms!</p> https://siedentop.dev/posts/sentry-cpp/ Sat, 13 Jun 2020 23:08:35 -0700 https://siedentop.dev/posts/sentry-cpp/ <h1 id="crash-reporting">Crash Reporting</h1> <p>If your program is running on more than one machine or is used by others, you probably want to get some insight into when things fail. I believe this is commonly called <a href="https://en.wikipedia.org/wiki/Crash_reporter">&ldquo;Crash Reporting&rdquo;</a>.</p> <p>Such a crash reporting system will consist of a component to collect individual incidents and of a component to aggregate individual reports. For example, it will group common incidents by stack trace.</p> <p>One public example of this, is Mozilla&rsquo;s system (<em>Socorro</em>). Have a look <a href="https://crash-stats.mozilla.org/">here for statistics</a> on all of Mozilla&rsquo;s projects. Or here, for just the <a href="https://crash-stats.mozilla.org/topcrashers/?product=Firefox&amp;version=79.0a1">top ten Firefox crashes</a> from a specific version:</p>