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multithreadingmacossystems-programmingdarwin

Equivalent to RUSAGE_THREAD darwin?

I need to measure the cpu usage of individual threads on darwin. On linux I use getrusage(RUSAGE_THREAD, ...) but it's not available on darwin.

Solution

  • RUSAGE_THREAD flag of getrusage is Linux-specific.

    getrusage of xnu does output only per-process sum.

    Information about usage times of each thread is maintained in task_basic_info struct of each thread.

    Documentation is here http://www.gnu.org/software/hurd/gnumach-doc/Task-Information.html

    Here is a simple example of how to get task_basic_info struct http://blog.kuriositaet.de/?p=257

     task_info(mach_task_self(), TASK_BASIC_INFO, (task_info_t)&t_info, &t_info_count)