How to perform error handling and logging in C++ class design?
Error handling and logging in C++ class design include: Exception handling: Capture and handle exceptions, and use custom exception classes to provide specific error information. Error code: Use an integer or enumeration to represent the error condition and return it in the return value. Assertion: Verify pre- and post-conditions, and throw an exception if they are not met. C++ library logging: Basic logging using std::cerr and std::clog. External logging libraries: Integrate third-party libraries for advanced features such as level filtering and log file rotation. Custom log class: Create your own log class, abstract the underlying mechanism, and provide a common interface to record different levels of information.
Error handling and logging in C++ class design
In C++ programming, robust error handling and logging mechanism Essential for building stable and reliable applications. This article explores how to implement effective error handling and logging in class design.
Error handling
-
Exception handling: Use the
try-catch
statement to catch exceptions and take action based on the exception type appropriate measures. Customize the exception class by inheriting theexception
class to provide specific error information. - Error codes: Use integers or enumeration values to represent error codes, and return these codes in the return values of functions and methods to indicate error conditions.
-
Assertion: Use the
assert()
macro to verify pre- and post-conditions in your code and throw an exception if the condition does not hold.
Logging
-
C++ library log: Using
std::cerr
andstd::clog
Stream for basic logging. - External logging libraries: Integrate third-party libraries such as Boost.Log and glog for more advanced logging features such as level filtering and log file rotation.
- Custom log class: Create your own log class to abstract the underlying logging mechanism and provide a common interface to record different levels of information (such as debugging, information, warning, error) .
Practical Case
Consider a reader-writer problem in which a reader thread and a writer thread concurrently access a shared data structure. The following example shows how to use exception handling and logging to handle potential concurrency issues:
class DataStructure { public: void read() { try { // 读操作 } catch (const std::exception& e) { log_error(e); } } void write() { try { // 写操作 } catch (const std::exception& e) { log_error(e); } } private: void log_error(const std::exception& e) { std::cerr << "错误信息: " << e.what() << std::endl; } };
By catching exceptions on read and write operations, we ensure that concurrency issues do not crash the application, but instead Log as an error and continue execution.
The above is the detailed content of How to perform error handling and logging in C++ class design?. For more information, please follow other related articles on the PHP Chinese website!

Converting from XML to C and performing data operations can be achieved through the following steps: 1) parsing XML files using tinyxml2 library, 2) mapping data into C's data structure, 3) using C standard library such as std::vector for data operations. Through these steps, data converted from XML can be processed and manipulated efficiently.

C# uses automatic garbage collection mechanism, while C uses manual memory management. 1. C#'s garbage collector automatically manages memory to reduce the risk of memory leakage, but may lead to performance degradation. 2.C provides flexible memory control, suitable for applications that require fine management, but should be handled with caution to avoid memory leakage.

C still has important relevance in modern programming. 1) High performance and direct hardware operation capabilities make it the first choice in the fields of game development, embedded systems and high-performance computing. 2) Rich programming paradigms and modern features such as smart pointers and template programming enhance its flexibility and efficiency. Although the learning curve is steep, its powerful capabilities make it still important in today's programming ecosystem.

C Learners and developers can get resources and support from StackOverflow, Reddit's r/cpp community, Coursera and edX courses, open source projects on GitHub, professional consulting services, and CppCon. 1. StackOverflow provides answers to technical questions; 2. Reddit's r/cpp community shares the latest news; 3. Coursera and edX provide formal C courses; 4. Open source projects on GitHub such as LLVM and Boost improve skills; 5. Professional consulting services such as JetBrains and Perforce provide technical support; 6. CppCon and other conferences help careers

C# is suitable for projects that require high development efficiency and cross-platform support, while C is suitable for applications that require high performance and underlying control. 1) C# simplifies development, provides garbage collection and rich class libraries, suitable for enterprise-level applications. 2)C allows direct memory operation, suitable for game development and high-performance computing.

C Reasons for continuous use include its high performance, wide application and evolving characteristics. 1) High-efficiency performance: C performs excellently in system programming and high-performance computing by directly manipulating memory and hardware. 2) Widely used: shine in the fields of game development, embedded systems, etc. 3) Continuous evolution: Since its release in 1983, C has continued to add new features to maintain its competitiveness.

The future development trends of C and XML are: 1) C will introduce new features such as modules, concepts and coroutines through the C 20 and C 23 standards to improve programming efficiency and security; 2) XML will continue to occupy an important position in data exchange and configuration files, but will face the challenges of JSON and YAML, and will develop in a more concise and easy-to-parse direction, such as the improvements of XMLSchema1.1 and XPath3.1.

The modern C design model uses new features of C 11 and beyond to help build more flexible and efficient software. 1) Use lambda expressions and std::function to simplify observer pattern. 2) Optimize performance through mobile semantics and perfect forwarding. 3) Intelligent pointers ensure type safety and resource management.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Atom editor mac version download
The most popular open source editor

Zend Studio 13.0.1
Powerful PHP integrated development environment

SublimeText3 Chinese version
Chinese version, very easy to use

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

SublimeText3 English version
Recommended: Win version, supports code prompts!