| /* |
| * Copyright (C) 2012-2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <inttypes.h> |
| #include <lk/macros.h> |
| #include <stddef.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <time.h> |
| |
| #include <lib/unittest/unittest.h> |
| #include <trusty_unittest.h> |
| |
| #define TLOG_TAG "timertest" |
| |
| static void __attribute__((noinline)) nop(void) { |
| static int i; |
| i++; |
| } |
| |
| struct timer_unittest { |
| struct unittest unittest; |
| bool loop; |
| }; |
| |
| #define TIMER_TEST_NOP_LOOP_COUNT (100000000) |
| #define ONE_MS (1000 * 1000ULL) |
| #define TIMER_TEST_MS_SLEEP_LOOP_COUNT (1000) |
| #define ONE_S (1000 * ONE_MS) |
| |
| static void check_timestamps(int64_t t1, |
| int64_t delta_min, |
| int64_t delta_max, |
| const char* name) { |
| int64_t delta; |
| int64_t t2 = t1 - 1; |
| |
| trusty_gettime(0, &t2); |
| delta = t2 - t1; |
| |
| EXPECT_EQ(false, (delta < delta_min || delta > delta_max), |
| "bad timestamp after %s: t1 %" PRId64 ", t2 %" PRId64 |
| ", delta %" PRId64 ", min %" PRId64 " max %" PRId64 "\n", |
| name, t1, t2, t2 - t1, delta_min, delta_max); |
| } |
| |
| TEST(TimerTest, BusyLoop) { |
| int i; |
| int64_t ts = 0; |
| |
| trusty_gettime(0, &ts); |
| for (i = 0; i < TIMER_TEST_NOP_LOOP_COUNT; i++) |
| nop(); |
| check_timestamps(ts, TIMER_TEST_NOP_LOOP_COUNT / 100, |
| TIMER_TEST_NOP_LOOP_COUNT * 10000ULL, "nop loop"); |
| } |
| |
| TEST(TimerTest, NanoSleepOneMilliSecond) { |
| int i; |
| int64_t ts = 0; |
| |
| trusty_gettime(0, &ts); |
| for (i = 0; i < TIMER_TEST_MS_SLEEP_LOOP_COUNT; i++) |
| trusty_nanosleep(0, 0, ONE_MS); |
| check_timestamps(ts, TIMER_TEST_MS_SLEEP_LOOP_COUNT * ONE_MS, |
| TIMER_TEST_MS_SLEEP_LOOP_COUNT * ONE_MS * 10, "ms loop"); |
| } |
| |
| TEST(TimerTest, NanoSleepTenSeconds) { |
| int64_t ts = 0; |
| |
| trusty_gettime(0, &ts); |
| trusty_nanosleep(0, 0, 10ULL * ONE_S); |
| check_timestamps(ts, ONE_S * 10, ONE_S * 11, "10s sleep"); |
| } |
| |
| static bool timer_test(struct unittest* test) { |
| struct timer_unittest* timer_test = |
| containerof(test, struct timer_unittest, unittest); |
| bool passed; |
| |
| do { |
| passed = RUN_ALL_TESTS(); |
| } while (timer_test->loop); |
| |
| return passed; |
| } |
| |
| #define PORT_BASE "com.android.timer-unittest" |
| |
| int main(void) { |
| static struct timer_unittest timer_unittests[2] = { |
| { |
| .unittest = |
| { |
| .port_name = PORT_BASE, |
| .run_test = timer_test, |
| }, |
| .loop = false, |
| }, |
| { |
| .unittest = |
| { |
| .port_name = PORT_BASE ".loop", |
| .run_test = timer_test, |
| }, |
| .loop = true, |
| }, |
| }; |
| static struct unittest* unittests[countof(timer_unittests)]; |
| |
| for (size_t i = 0; i < countof(timer_unittests); i++) { |
| unittests[i] = &timer_unittests[i].unittest; |
| } |
| |
| return unittest_main(unittests, countof(unittests)); |
| } |