Intercept calls to pthread_mutex_lock

Umesh__Deepthi — Sat, 01 Dec 2018 04:25:49 GMT

Hi All,

I would want to profile multithreaded program and find out if threre was a contention for mutex by threads.

If a thread is going to operate on some mutex, the thread needs to call corresponding pthread functions, like pthread_mutex_lock. I should be able to redirect the execution of these functions, as in wrap before and after the execution of these functions, where I can get the parameters and return values.

how to intercept calls to pthread_mutex_lock. doing something like #define pthread_mutex_lock my_pthread_mutex_lock?

Kindly throw some light on this.I request you to help me out.

Thank you in advance.

Regards,

Deepthi

This doesn't have much to do

Travis_D_ — Sat, 22 Dec 2018 03:02:45 GMT

This doesn't have much to do with Intel, but you can Google for "symbol interposition" or something like that. One way is to use LD_LIBRARY_PRELOAD on Unix-like with a library that redefines the symbols. You can also look at uprobes and similar.

topic Intercept calls to pthread_mutex_lock in Software Tuning, Performance Optimization & Platform Monitoring

Intercept calls to pthread_mutex_lock

This doesn't have much to do