[apple/xnu.git] / tests / kperf_helpers.c

#include "kperf_helpers.h"

#include <darwintest.h>
#include <kperf/kperf.h>
#include <unistd.h>

void
configure_kperf_stacks_timer(pid_t pid, unsigned int period_ms, bool quiet)
{
        kperf_reset();

        (void)kperf_action_count_set(1);
        (void)kperf_timer_count_set(1);

        if (quiet) {
                T_QUIET;
        }
        T_ASSERT_POSIX_SUCCESS(kperf_action_samplers_set(1,
            KPERF_SAMPLER_USTACK | KPERF_SAMPLER_KSTACK), NULL);

        if (pid != -1) {
                if (quiet) {
                        T_QUIET;
                }
                T_ASSERT_POSIX_SUCCESS(kperf_action_filter_set_by_pid(1, pid), NULL);
        }

        if (quiet) {
                T_QUIET;
        }
        T_ASSERT_POSIX_SUCCESS(kperf_timer_action_set(0, 1), NULL);
        if (quiet) {
                T_QUIET;
        }
        T_ASSERT_POSIX_SUCCESS(kperf_timer_period_set(0,
            kperf_ns_to_ticks(period_ms * NSEC_PER_MSEC)), NULL);
}