116 lines
2.5 KiB
C
116 lines
2.5 KiB
C
/* Copyright 2016 The Chromium OS Authors. All rights reserved.
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
* Copyright 2011 Google Inc.
|
|
*
|
|
* Tasks for mutexes basic tests.
|
|
*/
|
|
|
|
#include "console.h"
|
|
#include "common.h"
|
|
#include "cts_common.h"
|
|
#include "task.h"
|
|
#include "test_util.h"
|
|
#include "timer.h"
|
|
#include "util.h"
|
|
|
|
static struct mutex mtx;
|
|
|
|
/* period between 50us and 3.2ms */
|
|
#define PERIOD_US(num) (((num % 64) + 1) * 50)
|
|
/* one of the 3 MTX3x tasks */
|
|
#define RANDOM_TASK(num) (TASK_ID_MTX3C + (num % 3))
|
|
|
|
int mutex_random_task(void *unused)
|
|
{
|
|
char letter = 'A'+(TASK_ID_MTX3A - task_get_current());
|
|
/* wait to be activated */
|
|
|
|
while (1) {
|
|
task_wait_event(0);
|
|
ccprintf("%c+\n", letter);
|
|
mutex_lock(&mtx);
|
|
ccprintf("%c=\n", letter);
|
|
task_wait_event(0);
|
|
ccprintf("%c-\n", letter);
|
|
mutex_unlock(&mtx);
|
|
}
|
|
|
|
task_wait_event(0);
|
|
|
|
return EC_SUCCESS;
|
|
}
|
|
|
|
int mutex_second_task(void *unused)
|
|
{
|
|
task_id_t id = task_get_current();
|
|
|
|
ccprintf("\n[Mutex second task %d]\n", id);
|
|
|
|
task_wait_event(0);
|
|
ccprintf("MTX2: locking...");
|
|
mutex_lock(&mtx);
|
|
ccprintf("done\n");
|
|
task_wake(TASK_ID_CTS);
|
|
ccprintf("MTX2: unlocking...\n");
|
|
mutex_unlock(&mtx);
|
|
|
|
task_wait_event(0);
|
|
|
|
return EC_SUCCESS;
|
|
}
|
|
|
|
static enum cts_rc lock_unlock_test(void)
|
|
{
|
|
task_id_t id = task_get_current();
|
|
uint32_t rdelay = (uint32_t)0x0bad1dea;
|
|
uint32_t rtask = (uint32_t)0x1a4e1dea;
|
|
int i;
|
|
|
|
ccprintf("\n[Mutex main task %d]\n", id);
|
|
|
|
/* --- Lock/Unlock without contention --- */
|
|
ccprintf("No contention :");
|
|
mutex_lock(&mtx);
|
|
mutex_unlock(&mtx);
|
|
mutex_lock(&mtx);
|
|
mutex_unlock(&mtx);
|
|
mutex_lock(&mtx);
|
|
mutex_unlock(&mtx);
|
|
ccprintf("done.\n");
|
|
|
|
/* --- Serialization to test simple contention --- */
|
|
ccprintf("Simple contention :\n");
|
|
/* lock the mutex from the other task */
|
|
task_set_event(TASK_ID_MTX2, TASK_EVENT_WAKE, 1);
|
|
/* block on the mutex */
|
|
ccprintf("MTX1: blocking...\n");
|
|
mutex_lock(&mtx);
|
|
ccprintf("MTX1: get lock\n");
|
|
mutex_unlock(&mtx);
|
|
|
|
/* --- mass lock-unlocking from several tasks --- */
|
|
ccprintf("Massive locking/unlocking :\n");
|
|
for (i = 0; i < 500; i++) {
|
|
/* Wake up a random task */
|
|
task_wake(RANDOM_TASK(rtask));
|
|
/* next pseudo random delay */
|
|
rtask = prng(rtask);
|
|
/* Wait for a "random" period */
|
|
task_wait_event(PERIOD_US(rdelay));
|
|
/* next pseudo random delay */
|
|
rdelay = prng(rdelay);
|
|
}
|
|
|
|
return EC_SUCCESS;
|
|
}
|
|
|
|
#include "cts_testlist.h"
|
|
|
|
void cts_task(void)
|
|
{
|
|
wait_for_task_started();
|
|
cts_main_loop(tests, "Mutex");
|
|
task_wait_event(-1);
|
|
}
|