How to use LeakSanitizer to debug C++ memory leaks? Install LeakSanitizer. Enable LeakSanitizer via compile flag. Run the application and analyze the LeakSanitizer report. Identify memory allocation types and allocation locations. Fix memory leaks and ensure all dynamically allocated memory is released.

Concurrency testing and debugging Concurrency testing and debugging in Java concurrent programming are crucial and the following techniques are available: Concurrency testing: Unit testing: Isolate and test a single concurrent task. Integration testing: testing the interaction between multiple concurrent tasks. Load testing: Evaluate an application's performance and scalability under heavy load. Concurrency Debugging: Breakpoints: Pause thread execution and inspect variables or execute code. Logging: Record thread events and status. Stack trace: Identify the source of the exception. Visualization tools: Monitor thread activity and resource usage.

This article introduces shortcuts for Go function debugging and analysis, including: built-in debugger dlv, which is used to pause execution, check variables, and set breakpoints. Logging, use the log package to record messages and view them during debugging. The performance analysis tool pprof generates call graphs and analyzes performance, and uses gotoolpprof to analyze data. Practical case: Analyze memory leaks through pprof and generate a call graph to display the functions that cause leaks.

Tools for debugging PHP asynchronous code include: Psalm: a static analysis tool that can find potential errors. ParallelLint: A tool that inspects asynchronous code and provides recommendations. Xdebug: An extension for debugging PHP applications by enabling a session and stepping through the code. Other tips include using logging, assertions, running code locally, and writing unit tests.

Error handling and logging in C++ class design include: Exception handling: catching and handling exceptions, using 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.

Debugging techniques for C++ multi-threaded programming include using a data race analyzer to detect read and write conflicts and using synchronization mechanisms (such as mutex locks) to resolve them. Use thread debugging tools to detect deadlocks and resolve them by avoiding nested locks and using deadlock detection mechanisms. Use the Data Race Analyzer to detect data races and resolve them by moving write operations into critical sections or using atomic operations. Use performance analysis tools to measure context switch frequency and resolve excessive overhead by reducing the number of threads, using thread pools, and offloading tasks.

Common PHP debugging errors include: Syntax errors: Check the code syntax to make sure there are no errors. Undefined variable: Before using a variable, make sure it is initialized and assigned a value. Missing semicolons: Add semicolons to all code blocks. Function is undefined: Check that the function name is spelled correctly and make sure the correct file or PHP extension is loaded.

Deadlock is a common error in concurrent programming that occurs when multiple threads wait for locks held by each other. Deadlocks can be resolved by detecting them using a debugger, analyzing thread activity, and identifying the threads and locks involved. Ways to resolve deadlocks include avoiding circular dependencies, using deadlock detectors, and using timeouts. In practice, deadlocks can be avoided by ensuring that threads acquire locks in the same order or by using recursive locks or condition variables.