tools/tests/darwintests/kperf_helpers.c

   1 #include "kperf_helpers.h"
   2
   3 #include <darwintest.h>
   4 #include <kperf/kperf.h>
   5 #include <unistd.h>
   6
   7 void
   8 configure_kperf_stacks_timer(pid_t pid, unsigned int period_ms)
   9 {
  10     kperf_reset();
  11
  12     (void)kperf_action_count_set(1);
  13     (void)kperf_timer_count_set(1);
  14
  15     T_ASSERT_POSIX_SUCCESS(kperf_action_samplers_set(1,
  16         KPERF_SAMPLER_USTACK | KPERF_SAMPLER_KSTACK), NULL);
  17
  18     if (pid != -1) {
  19         T_ASSERT_POSIX_SUCCESS(kperf_action_filter_set_by_pid(1, pid), NULL);
  20     }
  21
  22     T_ASSERT_POSIX_SUCCESS(kperf_timer_action_set(0, 1), NULL);
  23     T_ASSERT_POSIX_SUCCESS(kperf_timer_period_set(0,
  24         kperf_ns_to_ticks(period_ms * NSEC_PER_MSEC)), NULL);
  25 }