projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 5ba3f43e A |
1 | #include <darwintest.h> |
| 2 | #include <inttypes.h> | |
| 3 | #include <stdint.h> | |
| 4 | ||
| 5 | #include <kperf/kpc.h> | |
| 6 | ||
| 7 | T_DECL(fixed_counters, | |
| 8 | "test that fixed counters return monotonically increasing values", | |
| 9 | T_META_ASROOT(YES)) | |
| 10 | { | |
| 11 | T_SKIP("unimplemented"); | |
| 12 | } | |
| 13 | ||
| 14 | T_DECL(fixed_thread_counters, | |
| 15 | "test that fixed thread counters return monotonically increasing values", | |
| 16 | T_META_ASROOT(YES)) | |
| 17 | { | |
| 18 | int err; | |
| 19 | uint32_t ctrs_cnt; | |
| 20 | uint64_t *ctrs_a; | |
| 21 | uint64_t *ctrs_b; | |
| 22 | ||
| 23 | T_SETUPBEGIN; | |
| 24 | ||
| 25 | ctrs_cnt = kpc_get_counter_count(KPC_CLASS_FIXED_MASK); | |
| 26 | if (ctrs_cnt == 0) { | |
| 27 | T_SKIP("no fixed counters available"); | |
| 28 | } | |
| 29 | T_LOG("device has %" PRIu32 " fixed counters", ctrs_cnt); | |
| 30 | ||
| 31 | T_QUIET; T_ASSERT_POSIX_SUCCESS(kpc_force_all_ctrs_set(1), NULL); | |
| 32 | T_ASSERT_POSIX_SUCCESS(kpc_set_counting(KPC_CLASS_FIXED_MASK), | |
| 33 | "kpc_set_counting"); | |
| 34 | T_ASSERT_POSIX_SUCCESS(kpc_set_thread_counting(KPC_CLASS_FIXED_MASK), | |
| 35 | "kpc_set_thread_counting"); | |
| 36 | ||
| 37 | T_SETUPEND; | |
| 38 | ||
| 39 | ctrs_a = malloc(ctrs_cnt * sizeof(uint64_t)); | |
| 40 | T_QUIET; T_ASSERT_NOTNULL(ctrs_a, NULL); | |
| 41 | ||
| 42 | err = kpc_get_thread_counters(0, ctrs_cnt, ctrs_a); | |
| 43 | T_ASSERT_POSIX_SUCCESS(err, "kpc_get_thread_counters"); | |
| 44 | ||
| 45 | for (uint32_t i = 0; i < ctrs_cnt; i++) { | |
| 46 | T_LOG("checking counter %d with value %" PRIu64 " > 0", i, ctrs_a[i]); | |
| 47 | T_QUIET; | |
| 48 | T_EXPECT_GT(ctrs_a[i], UINT64_C(0), "counter %d is non-zero", i); | |
| 49 | } | |
| 50 | ||
| 51 | ctrs_b = malloc(ctrs_cnt * sizeof(uint64_t)); | |
| 52 | T_QUIET; T_ASSERT_NOTNULL(ctrs_b, NULL); | |
| 53 | ||
| 54 | err = kpc_get_thread_counters(0, ctrs_cnt, ctrs_b); | |
| 55 | T_ASSERT_POSIX_SUCCESS(err, "kpc_get_thread_counters"); | |
| 56 | ||
| 57 | for (uint32_t i = 0; i < ctrs_cnt; i++) { | |
| 58 | T_LOG("checking counter %d with value %" PRIu64 | |
| 59 | " > previous value %" PRIu64, i, ctrs_b[i], ctrs_a[i]); | |
| 60 | T_QUIET; | |
| 61 | T_EXPECT_GT(ctrs_b[i], UINT64_C(0), "counter %d is non-zero", i); | |
| 62 | T_QUIET; T_EXPECT_LT(ctrs_a[i], ctrs_b[i], | |
| 63 | "counter %d is increasing", i); | |
| 64 | } | |
| 65 | ||
| 66 | free(ctrs_a); | |
| 67 | free(ctrs_b); | |
| 68 | } |