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94172eba44
This adds golden wake count for each task and check at the end of the test. The golden wake count is calculated with the seeds and the pseudo random number generator. BUG=chrome-os-partner:23800 TEST=Pass the test BRANCH=None Change-Id: I7e90336b3f0b0355795ada7baf7c052a047ee302 Signed-off-by: Vic (Chun-Ju) Yang <victoryang@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/181734 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> Reviewed-by: Randall Spangler <rspangler@chromium.org>
81 lines
1.6 KiB
C
81 lines
1.6 KiB
C
/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* Tasks for timer test.
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*/
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#include "common.h"
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#include "console.h"
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#include "task.h"
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#include "test_util.h"
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#include "timer.h"
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#include "util.h"
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/* period between 500us and 128ms */
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#define PERIOD_US(num) (((num % 256) + 1) * 500)
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#define TEST_TIME (3 * SECOND)
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#define ERROR_MARGIN 5
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static int calculate_golden(uint32_t seed)
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{
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int golden = 0;
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uint32_t elapsed = 0;
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while (1) {
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elapsed += PERIOD_US(seed);
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++golden;
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if (elapsed >= TEST_TIME)
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return golden;
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seed = prng(seed);
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}
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}
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int task_timer(void *seed)
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{
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uint32_t num = (uint32_t)(uintptr_t)seed;
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int golden_cnt = calculate_golden(num);
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task_id_t id = task_get_current();
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timestamp_t start;
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int cnt = 0;
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while (1) {
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task_wait_event(-1);
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ccprintf("\n[Timer task %d]\n", id);
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start = get_time();
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while (get_time().val - start.val < TEST_TIME) {
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/* Wait for a "random" period */
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task_wait_event(PERIOD_US(num));
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ccprintf("%01d\n", id);
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cnt++;
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/* next pseudo random delay */
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num = prng(num);
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}
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ccprintf("Task %d: Count=%d Golden=%d\n", id, cnt, golden_cnt);
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cnt -= golden_cnt;
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if (cnt < 0)
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cnt = -cnt;
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if (cnt > ERROR_MARGIN) {
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ccprintf("Count differs from Golden by more than %d!\n",
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ERROR_MARGIN);
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test_fail();
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}
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}
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return EC_SUCCESS;
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}
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void run_test(void)
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{
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wait_for_task_started();
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task_wake(TASK_ID_TMRD);
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task_wake(TASK_ID_TMRC);
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task_wake(TASK_ID_TMRB);
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task_wake(TASK_ID_TMRA);
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usleep(TEST_TIME + SECOND);
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test_pass();
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}
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