projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| cb323159 A |
1 | #include <darwintest.h> |
| 2 | #include <inttypes.h> | |
| 3 | #include <mach/coalition.h> | |
| 4 | #include <stdint.h> | |
| 5 | #include <sys/coalition.h> | |
| 6 | #include <sys/sysctl.h> | |
| 7 | #include <libproc.h> | |
| 8 | #include <unistd.h> | |
| 9 | ||
| 10 | T_GLOBAL_META(T_META_RUN_CONCURRENTLY(true)); | |
| 11 | ||
| 12 | static void | |
| 13 | skip_if_monotonic_unsupported(void) | |
| 14 | { | |
| 15 | int r; | |
| 16 | int supported = 0; | |
| 17 | size_t supported_size = sizeof(supported); | |
| 18 | ||
| 19 | r = sysctlbyname("kern.monotonic.supported", &supported, &supported_size, | |
| 20 | NULL, 0); | |
| 21 | if (r < 0) { | |
| 22 | T_WITH_ERRNO; | |
| 23 | T_SKIP("could not find \"kern.monotonic.supported\" sysctl"); | |
| 24 | } | |
| 25 | ||
| 26 | if (!supported) { | |
| 27 | T_SKIP("monotonic is not supported on this platform"); | |
| 28 | } | |
| 29 | } | |
| 30 | ||
| 31 | T_DECL(coalition_resource_info_counters, | |
| 32 | "ensure that coalition resource info produces valid counter data") | |
| 33 | { | |
| 34 | skip_if_monotonic_unsupported(); | |
| 35 | ||
| 36 | struct proc_pidcoalitioninfo idinfo = {}; | |
| 37 | int ret = proc_pidinfo(getpid(), PROC_PIDCOALITIONINFO, 0, | |
| 38 | &idinfo, sizeof(idinfo)); | |
| 39 | T_ASSERT_POSIX_SUCCESS(ret, "proc_pidinfo(... PROC_PIDCOALITIONINFO ...)"); | |
| 40 | ||
| 41 | uint64_t resid = idinfo.coalition_id[COALITION_TYPE_RESOURCE]; | |
| 42 | ||
| 43 | struct coalition_resource_usage coalusage[2] = {}; | |
| 44 | ret = coalition_info_resource_usage(resid, &coalusage[0], | |
| 45 | sizeof(coalusage[0])); | |
| 46 | T_ASSERT_POSIX_SUCCESS(ret, "coalition_info_resource_usage()"); | |
| 47 | T_EXPECT_GT(coalusage[0].cpu_instructions, UINT64_C(0), | |
| 48 | "instruction count is non-zero"); | |
| 49 | T_EXPECT_GT(coalusage[0].cpu_cycles, UINT64_C(0), | |
| 50 | "cycle count is non-zero"); | |
| 51 | ||
| 52 | sleep(1); | |
| 53 | ||
| 54 | ret = coalition_info_resource_usage(resid, &coalusage[1], | |
| 55 | sizeof(coalusage[1])); | |
| 56 | T_ASSERT_POSIX_SUCCESS(ret, "coalition_info_resource_usage()"); | |
| 57 | ||
| 58 | T_EXPECT_GE(coalusage[1].cpu_instructions, coalusage[0].cpu_instructions, | |
| 59 | "instruction count is monotonically increasing (+%" PRIu64 ")", | |
| 60 | coalusage[1].cpu_instructions - coalusage[0].cpu_instructions); | |
| 61 | T_EXPECT_GE(coalusage[1].cpu_cycles, coalusage[0].cpu_cycles, | |
| 62 | "cycle count is monotonically increasing (+%" PRIu64 ")", | |
| 63 | coalusage[1].cpu_cycles - coalusage[0].cpu_cycles); | |
| 64 | } |