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@@ -40,6 +43,138 @@ void system_test_odp_cpu_count(void) CU_ASSERT(0 < cpus); } +void system_test_odp_cpu_cycles(void) +{ + uint64_t c2, c1; + + c1 = odp_cpu_cycles(); + odp_time_wait_ns(100); + c2 = odp_cpu_cycles(); + + CU_ASSERT(c2 != c1); +} + +void system_test_odp_cpu_cycles_max(void) +{ + uint64_t c2, c1; + uint64_t max1, max2; + + max1 = odp_cpu_cycles_max(); + odp_time_wait_ns(100); + max2 = odp_cpu_cycles_max(); + + CU_ASSERT(max1 >= UINT32_MAX / 2); + CU_ASSERT(max1 == max2); + + c1 = odp_cpu_cycles(); + odp_time_wait_ns(1000); + c2 = odp_cpu_cycles(); + + CU_ASSERT(c1 <= max1 && c2 <= max1); +} + +void system_test_odp_cpu_cycles_diff(void) +{ + int i; + uint64_t c2, c1, c3; + uint64_t tmp, diff; + + c2 = 100; + c1 = 39; + + diff = odp_cpu_cycles_diff(c2, c2); + CU_ASSERT(diff == 0); + + tmp = c2 - c1; + diff = odp_cpu_cycles_diff(c2, c1); + CU_ASSERT(diff == tmp); + + tmp = c1 + (odp_cpu_cycles_max() - c2) + 1; + diff = odp_cpu_cycles_diff(c1, c2); + CU_ASSERT(diff == tmp); + + c3 = odp_cpu_cycles(); + + /* must handle one wrap */ + for (i = 0; i < DIFF_TRY_NUM; i++) { + c1 = odp_cpu_cycles(); + odp_time_wait_ns(100 * ODP_TIME_MSEC_IN_NS + i); + c2 = odp_cpu_cycles(); + + CU_ASSERT(c2 != c1); + + if (c2 > c1) + tmp = c2 - c1; + else + tmp = c2 + (odp_cpu_cycles_max() - c1) + 1; + + diff = odp_cpu_cycles_diff(c2, c1); + CU_ASSERT(diff == tmp); + + /* wrap is detected and verified */ + if (c2 < c1) + break; + } + + /* wrap was detected, no need to continue */ + if (i < DIFF_TRY_NUM) + return; + + CU_ASSERT(odp_cpu_cycles_max() > UINT32_MAX); + CU_ASSERT((odp_cpu_cycles_max() - c3) > UINT32_MAX); + + printf("wrap was not detected..."); +} + +void system_test_odp_cpu_cycles_resolution(void) +{ + int i; + uint64_t rest; + uint64_t res, diff; + uint64_t c2, c1, max; + + max = odp_cpu_cycles_max(); + + res = odp_cpu_cycles_resolution(); + CU_ASSERT(res != 0); + CU_ASSERT(res < max / 1024); + + /* check resolution for wrap */ + c1 = max - 2 * res; + do + c2 = odp_cpu_cycles(); + while (c1 < c2); + + diff = odp_cpu_cycles_diff(c1, c2); + rest = diff % res; + CU_ASSERT(rest == 0); + + /* + * must be a multiple of resolution in + * whole interval till wrap, in another + * case resolution is set incorrectly + */ + for (i = 0; i < RES_TRY_NUM; i++) { + c1 = odp_cpu_cycles(); + odp_time_wait_ns(100 * ODP_TIME_MSEC_IN_NS + i); + c2 = odp_cpu_cycles(); + + diff = odp_cpu_cycles_diff(c2, c1); + rest = diff % res; + CU_ASSERT(rest == 0); + + rest = c1 % res; + CU_ASSERT(rest == 0); + + rest = c2 % res; + CU_ASSERT(rest == 0); + + /* wrap is detected and verified */ + if (c2 < c1) + break; + } +} + void system_test_odp_sys_cache_line_size(void) { uint64_t cache_size; @@ -91,6 +226,10 @@ odp_testinfo_t system_suite[] = { ODP_TEST_INFO(system_test_odp_sys_page_size), ODP_TEST_INFO(system_test_odp_sys_huge_page_size), ODP_TEST_INFO(system_test_odp_sys_cpu_hz), + ODP_TEST_INFO(system_test_odp_cpu_cycles), + ODP_TEST_INFO(system_test_odp_cpu_cycles_max), + ODP_TEST_INFO(system_test_odp_cpu_cycles_diff), + ODP_TEST_INFO(system_test_odp_cpu_cycles_resolution), ODP_TEST_INFO_NULL, }; diff --git a/test/validation/system/system.h b/test/validation/system/system.h index 869aaff..0c263f2 100644 --- a/test/validation/system/system.h +++ b/test/validation/system/system.h @@ -17,6 +17,10 @@ void system_test_odp_sys_cpu_model_str(void); void system_test_odp_sys_page_size(void); void system_test_odp_sys_huge_page_size(void); void system_test_odp_sys_cpu_hz(void); +void system_test_odp_cpu_cycles_max(void); +void system_test_odp_cpu_cycles(void); +void system_test_odp_cpu_cycles_diff(void); +void system_test_odp_cpu_cycles_resolution(void); /* test arrays: */ extern odp_testinfo_t system_suite[];