The Absurdity of Error Handling: Finding a Purpose for Errors in Safety-Critical SYCL Erik Tomusk CppCon 2023 October 5, 2023© 2023 Codeplay Software Ltd. Codeplay Corporate Slide 2© 2023 Codeplay explicitly stated© 2023 Codeplay Software Ltd. Outline • Definition of Safety • Definition of Error Handling • Case Study • Why is this Important? • Is it Really so bad? • What does this mean for SYCL execution time (in mainstream compilers) 17Definition of Error Handling 18© 2023 Codeplay Software Ltd. Definition of Error Handling • Exceptions and error codes are sometimes used for reporting or information

Modern C++ Handling Phil Nash Error2018 2019series disappointments of a (total) Part 1int parse_int(std::string_view number)// TODO: +, -, digit separators? int acc = 0; for(char c first_digit = false; } return ParseStatus::Numeric; } 42 42 (starts with an int) Error: x42 is not an int test("42"); test("42x"); test("x42"); [[nodiscard]] void test(std::string_view int)”, i); break; case ParseStatus::NonNumeric: std::println(“Error: {} is not an int", str); break; } }int parse_int(std::string_view number) {

Design patterns for error handling in C++ programs using parallel algorithms and executors Mark Hoemmen* mhoemmen@stellarscience.com CppCon 2020 * hoʊ’mən, or hœm’mən; he/himWho am I? • > 10 years Started new job at Stellar Science in March Eschew raw pointersOutline • Parallelism makes error handling harder… • …C++ parallel algorithms and tasks specifically • Message Passing Interface (MPI): Steve Jurvetson)Parallel hinders error handling • … because parallelism relaxes execution order – Deliberately, to improve performance • Errors interrupt execution; handling constrains order • Errors could

CppCon 2024 Customizing Compilation Error Messages Formatting a Compile-Time String During Substitution Failure Patrick Roberts, P.E. Principal Software Engineer 1CppCon 2024 What problem does solve? 2CppCon 2024 3CppCon 2024 4CppCon 2024 5CppCon 2024 6 Guidelines for a helpful error message Where is the error? ✅ What is wrong? ✅ How can it be fixed? ❌CppCon 2024 7CppCon 2024 8CppCon 2024 9

Message Handling with Boolean Algebra Ben Deane / CppCon / 2024-09-16 1Alternative Title "The Unreasonable Effectiveness of Boolean Algebra in Software Design, Showing the Particular Application of of a Message Handling Library, with an Excursion into the Roots of Programming" 2Frontmatter No AI/LLM was used in the creation of this talk. Code is simplified for slides; may have some errors in ] SVG diagrams for resolution-independence 4What this talk is about The workings of a message-handling library. How messages and the fields in them are specified. Efficiently identifying (with matchers)

Using Kubernetes for handling second screen experience of european tv show About us Thomas Hector Head of IT Operations Key Qualifications ● 12+ years’ experience with development and operations operations ● Automating everything ● Been handling Kubernetes clusters in production for 2 years Jan-Erik Revsbech CTO Key Qualifications ● 20+ year of experience in web-development & operation/hosting

在 Java 语言中，程序运行出错被称为出现异常（Exception）。 异常是程序运行过程中发生的事件，该事件可以中断程序指令的 正常执行流程。 O Java 异常分为两大类 1. 错误（Error）是指 JVM 系统内部错误、资源耗尽等严重情 况。 2. 违例（Exception）则是指其他因编程错误或偶然的外在因 素导致的一般性问题，例如对负数开平方根、空指针访问、 试图读取不存在的文件以及网络连接中断等。 在 Java 语言中，程序运行出错被称为出现异常（Exception）。 异常是程序运行过程中发生的事件，该事件可以中断程序指令的 正常执行流程。 O Java 异常分为两大类 1. 错误（Error）是指 JVM 系统内部错误、资源耗尽等严重情 况。 2. 违例（Exception）则是指其他因编程错误或偶然的外在因 素导致的一般性问题，例如对负数开平方根、空指针访问、 试图读取不存在的文件以及网络连接中断等。 成一个相应的异常类对象，然后再将它交给运行时系统。 ▶ 运行时系统再寻找相应的代码来处理这一异常。如果 Java 运行时系统找不到可以处理异常的代码，则运行时系统将终 止，相应的 Java 程序也将退出。 ▶ 程序员通常对错误（Error）无能为力，因而一般只处理违 例 (Exception)。 大纲 异常的概念及分类 Java 异常处理机制 Java 异常处理机制 ▶ Java 程序执行过程中如出现异常，系统会监测到并自动生

std::shared_ptr response) { if (map_.get_data().size() == 0) { RCLCPP_ERROR_STREAM(this->get_logger(), "MAP IS EMPTY!!"); response->code.code = example_srvs::msg::GetPat _OCCUPANCY_MAP; response->path = std_msgs::msg::UInt8MultiArray(); return; } /* More error pre-checks */ auto const start = Position{request->start.data[0], request->start.data[1]}; auto std::shared_ptr response) { if (map_.get_data().size() == 0) { RCLCPP_ERROR_STREAM(this->get_logger(), "MAP IS EMPTY!!"); response->code.code = example_srvs::msg::GetPat