I'll also join in and share my projects using LD_PRELOAD. These also work on macOS through its equivalent DYLD_INSERT_LIBRARIES. https://github.com/d99kris/sta

I'll also join in and share my projects using LD_PRELOAD. These also work on macOS through its equivalent DYLD_INSERT_LIBRARIES. https://github.com/d99kris/stackusage https://github.com/d99kris/stackusage measures thread stack usage by intercepting calls to pthread_create and filling the thread stack with a dummy data pattern. It also registers a callback routine to be called upon thread termination. https://github.com/d99kris/heapusage https://github.com/d99kris/heapusage intercepts calls to malloc/free/etc detecting heap memory leaks and providing simple stats on heap usage. https://github.com/d99kris/cpuusage https://github.com/d99kris/cpuusage can intercept calls to POSIX functions (incl. syscall wrappers) and provide profiling details on the time spent in each call.