-
Notifications
You must be signed in to change notification settings - Fork 488
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
testing/ostest: add test case for task priority change with locked sc…
…heduler Signed-off-by: Petro Karashchenko <petro.karashchenko@gmail.com>
- Loading branch information
1 parent
6d64da0
commit 7614289
Showing
5 changed files
with
300 additions
and
16 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,274 @@ | ||
/**************************************************************************** | ||
* apps/testing/ostest/schedlock.c | ||
* | ||
* Licensed to the Apache Software Foundation (ASF) under one or more | ||
* contributor license agreements. See the NOTICE file distributed with | ||
* this work for additional information regarding copyright ownership. The | ||
* ASF licenses this file to you 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. | ||
* | ||
****************************************************************************/ | ||
|
||
/* Scheduler lock test consists of two test cases that use 2 threads with | ||
* high (H) and low (L) priorities. The H sets variable to predefined value | ||
* while L tries to clear the variable. The H manipulates with with thread | ||
* priorities while scheduler is locked. The test is pass if variable set by | ||
* H is still set to predefined value after thread priority is changed. | ||
* | ||
* Test case 1. The H thread locks scheduler and increase priority of L | ||
* to the H+1 priority. The test case passes if H is still | ||
* running after priority of L is increased. | ||
* Test case 2. The H thread locks scheduler and decreases it's own | ||
* priority to L-1. The test case passes if H is still | ||
* running after it's priority is decreased. | ||
* | ||
*/ | ||
|
||
/**************************************************************************** | ||
* Included Files | ||
****************************************************************************/ | ||
|
||
#include <stdio.h> | ||
#include <unistd.h> | ||
#include <pthread.h> | ||
#include <errno.h> | ||
#include <sched.h> | ||
#include <unistd.h> | ||
#include <stdint.h> | ||
|
||
#ifdef CONFIG_ARCH_SIM | ||
# include <nuttx/arch.h> | ||
#endif | ||
|
||
#include <sys/wait.h> | ||
|
||
#include "ostest.h" | ||
|
||
static pthread_t g_lowpri; | ||
static pthread_t g_highpri; | ||
static volatile bool g_locked; | ||
static volatile bool g_pass; | ||
|
||
/**************************************************************************** | ||
* Private Functions | ||
****************************************************************************/ | ||
|
||
/**************************************************************************** | ||
* Name: highpri_thread | ||
****************************************************************************/ | ||
|
||
static FAR void *highpri_thread(FAR void *parameter) | ||
{ | ||
struct sched_param param; | ||
int policy; | ||
bool self = (bool)(uintptr_t)parameter; | ||
pthread_t thread = self ? 0 : g_lowpri; | ||
|
||
usleep(100); | ||
|
||
pthread_getschedparam(0, &policy, ¶m); | ||
if (self) | ||
{ | ||
param.sched_priority -= 2; | ||
} | ||
else | ||
{ | ||
param.sched_priority += 2; | ||
} | ||
|
||
sched_lock(); | ||
|
||
g_locked = true; | ||
|
||
pthread_setschedprio(thread, param.sched_priority); | ||
|
||
/* Test pass if g_locked was not cleared by lowpri thread while scheduler | ||
* is locked | ||
*/ | ||
|
||
g_pass = g_locked; | ||
|
||
sched_unlock(); | ||
|
||
return NULL; | ||
} | ||
|
||
/**************************************************************************** | ||
* Name: lowpri_thread | ||
****************************************************************************/ | ||
|
||
static FAR void *lowpri_thread(FAR void *parameter) | ||
{ | ||
/* Wait until highpri thread starts the scheduler lock test */ | ||
|
||
while (!g_locked) | ||
{ | ||
#ifdef CONFIG_ARCH_SIM | ||
/* The simulator doesn't have any mechanism to do asynchronous | ||
* pre-emption (basically because it doesn't have any | ||
* interrupts/asynchronous events). The simulator does "fake" a timer | ||
* interrupt in up_idle() -- the idle thread that only executes when | ||
* nothing else is running. In the simulator, we cannot suspend the | ||
* middle priority task, or we wouldn't have the test that we want. | ||
* So, we have no option but to pump the fake clock here by calling | ||
* up_idle(). Sigh! | ||
*/ | ||
|
||
up_idle(); | ||
#endif | ||
} | ||
|
||
g_locked = false; | ||
|
||
return NULL; | ||
} | ||
|
||
/**************************************************************************** | ||
* Public Functions | ||
****************************************************************************/ | ||
|
||
/**************************************************************************** | ||
* Name: sched_lock_test | ||
****************************************************************************/ | ||
|
||
void sched_lock_test(void) | ||
{ | ||
int i; | ||
|
||
for (i = 0; i < 2; i++) | ||
{ | ||
pthread_attr_t attr; | ||
struct sched_param sparam; | ||
int status; | ||
int highprio; | ||
int lowprio; | ||
#ifdef CONFIG_SMP | ||
cpu_set_t cpu_mask; | ||
|
||
CPU_ZERO(&cpu_mask); | ||
CPU_SET(0, &cpu_mask); | ||
#endif | ||
|
||
status = sched_getparam(0, &sparam); | ||
if (status != 0) | ||
{ | ||
printf("sched_lock: ERROR sched_getparam failed\n"); | ||
ASSERT(false); | ||
sparam.sched_priority = PTHREAD_DEFAULT_PRIORITY; | ||
} | ||
|
||
highprio = sparam.sched_priority - 2; | ||
lowprio = highprio - 1; | ||
|
||
/* Start the low priority thread */ | ||
|
||
printf("sched_lock: Starting lowpri_thread at %d\n", lowprio); | ||
status = pthread_attr_init(&attr); | ||
if (status != 0) | ||
{ | ||
printf("sched_lock: ERROR pthread_attr_init failed, status=%d\n", | ||
status); | ||
ASSERT(false); | ||
} | ||
|
||
sparam.sched_priority = lowprio; | ||
status = pthread_attr_setschedparam(&attr, &sparam); | ||
if (status != OK) | ||
{ | ||
printf("sched_lock: " | ||
"ERROR pthread_attr_setschedparam failed, status=%d\n", | ||
status); | ||
ASSERT(false); | ||
} | ||
else | ||
{ | ||
printf("sched_lock: Set lowpri_thread priority to %d\n", | ||
sparam.sched_priority); | ||
} | ||
|
||
#ifdef CONFIG_SMP | ||
pthread_attr_setaffinity_np(&attr, sizeof(cpu_set_t), &cpu_mask); | ||
#endif | ||
|
||
FFLUSH(); | ||
|
||
status = pthread_create(&g_lowpri, &attr, lowpri_thread, NULL); | ||
if (status != 0) | ||
{ | ||
printf("sched_lock: ERROR pthread_create failed, status=%d\n", | ||
status); | ||
ASSERT(false); | ||
} | ||
|
||
/* Start the high priority thread */ | ||
|
||
printf("sched_lock: Starting highpri_thread at %d\n", highprio); | ||
status = pthread_attr_init(&attr); | ||
if (status != 0) | ||
{ | ||
printf("sched_lock: ERROR pthread_attr_init failed, status=%d\n", | ||
status); | ||
ASSERT(false); | ||
} | ||
|
||
sparam.sched_priority = highprio; | ||
status = pthread_attr_setschedparam(&attr, &sparam); | ||
if (status != OK) | ||
{ | ||
printf("sched_lock: " | ||
"ERROR pthread_attr_setschedparam failed, status=%d\n", | ||
status); | ||
ASSERT(false); | ||
} | ||
else | ||
{ | ||
printf("sched_lock: Set highpri_thread priority to %d\n", | ||
sparam.sched_priority); | ||
} | ||
|
||
#ifdef CONFIG_SMP | ||
pthread_attr_setaffinity_np(&attr, sizeof(cpu_set_t), &cpu_mask); | ||
#endif | ||
|
||
FFLUSH(); | ||
|
||
status = pthread_create(&g_highpri, &attr, highpri_thread, | ||
(FAR void *)(uintptr_t)(i == 0)); | ||
if (status != 0) | ||
{ | ||
printf("sched_lock: ERROR pthread_create failed, status=%d\n", | ||
status); | ||
ASSERT(false); | ||
} | ||
|
||
printf("sched_lock: Waiting...\n"); | ||
sleep(1); | ||
|
||
pthread_join(g_highpri, NULL); | ||
pthread_join(g_lowpri, NULL); | ||
|
||
if (!g_pass) | ||
{ | ||
printf("sched_lock: ERROR: FAIL pre-emption occurred " | ||
"while scheduler was locked.\n"); | ||
ASSERT(false); | ||
} | ||
else | ||
{ | ||
printf("sched_lock: PASSED No pre-emption occurred " | ||
"while scheduler was locked.\n"); | ||
} | ||
} | ||
|
||
printf("sched_lock: Finished\n"); | ||
FFLUSH(); | ||
} |