#include <darwintest.h> #include <inttypes.h> #include <stdint.h> #include <kperf/kpc.h> T_DECL(fixed_counters, "test that fixed counters return monotonically increasing values", T_META_ASROOT(YES)) { T_SKIP("unimplemented"); } T_DECL(fixed_thread_counters, "test that fixed thread counters return monotonically increasing values", T_META_ASROOT(YES)) { int err; uint32_t ctrs_cnt; uint64_t *ctrs_a; uint64_t *ctrs_b; T_SETUPBEGIN; ctrs_cnt = kpc_get_counter_count(KPC_CLASS_FIXED_MASK); if (ctrs_cnt == 0) { T_SKIP("no fixed counters available"); } T_LOG("device has %" PRIu32 " fixed counters", ctrs_cnt); T_QUIET; T_ASSERT_POSIX_SUCCESS(kpc_force_all_ctrs_set(1), NULL); T_ASSERT_POSIX_SUCCESS(kpc_set_counting(KPC_CLASS_FIXED_MASK), "kpc_set_counting"); T_ASSERT_POSIX_SUCCESS(kpc_set_thread_counting(KPC_CLASS_FIXED_MASK), "kpc_set_thread_counting"); T_SETUPEND; ctrs_a = malloc(ctrs_cnt * sizeof(uint64_t)); T_QUIET; T_ASSERT_NOTNULL(ctrs_a, NULL); err = kpc_get_thread_counters(0, ctrs_cnt, ctrs_a); T_ASSERT_POSIX_SUCCESS(err, "kpc_get_thread_counters"); for (uint32_t i = 0; i < ctrs_cnt; i++) { T_LOG("checking counter %d with value %" PRIu64 " > 0", i, ctrs_a[i]); T_QUIET; T_EXPECT_GT(ctrs_a[i], UINT64_C(0), "counter %d is non-zero", i); } ctrs_b = malloc(ctrs_cnt * sizeof(uint64_t)); T_QUIET; T_ASSERT_NOTNULL(ctrs_b, NULL); err = kpc_get_thread_counters(0, ctrs_cnt, ctrs_b); T_ASSERT_POSIX_SUCCESS(err, "kpc_get_thread_counters"); for (uint32_t i = 0; i < ctrs_cnt; i++) { T_LOG("checking counter %d with value %" PRIu64 " > previous value %" PRIu64, i, ctrs_b[i], ctrs_a[i]); T_QUIET; T_EXPECT_GT(ctrs_b[i], UINT64_C(0), "counter %d is non-zero", i); T_QUIET; T_EXPECT_LT(ctrs_a[i], ctrs_b[i], "counter %d is increasing", i); } free(ctrs_a); free(ctrs_b); }