dynamic-instrumentation

Runtime tracing monitors program execution by instrumenting function calls, memory access patterns, and system calls. It helps debug complex race conditions and identify performance bottlenecks during application execution without requiring source code.

eBPF integration provides in-depth program introspection by monitoring system calls and execution behavior at runtime. It works alongside LLVM IR instrumentation passes to facilitate runtime analysis and dynamic security monitoring.

Dynamic binary instrumentation modifies program execution at runtime using tools like QBDI and Instrew to analyze application behavior. It is needed for performing code coverage analysis, runtime tracing, and debugging complex issues without source code access.

LLVM infrastructure supports sanitizer coverage, block frequency analysis, and sampling profiler integration to build code coverage systems and performance profilers. These tools provide deep insights into application execution and runtime behavior.

Dynamic binary instrumentation may introduce runtime overhead when modifying execution, potentially altering timing and causing profiling distortions. It is best used for targeted tracing of specific functions or memory access patterns rather than whole-system profiling.