How to determine the pthread utilized memory

Question

Any given point of time, how can i get the memory size utilized by each thread?

Answer 1

To check the thread's stack size you could use non-portable GNU extension pthread_getattr_np and also you could check /proc/self/maps (or /proc/PID/maps) but this way is more complex.

Answer 2

If all you want is a heap profiler consider Google performance tools with their own allocator TCMalloc.

http://code.google.com/p/google-perftools/

An alternative high performance allocator is jemalloc which provides statistics reporting including per-thread cache bin details with malloc_stats_print()

http://www.canonware.com/jemalloc/index.html

Answer 3

You can't, the heap is shared between all threads in the process.