Aksal/nuttx-apps
1
0
Fork 1
mirror of https://github.com/apache/nuttx-apps.git synced 2026-08-01 20:29:00 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

apps/testing: Add pthread_mutex_perf created by Anchao

Browse source 
During the discussion about the impact of adding counter to TCB
Mr anchao created a pthread mutex performance example:
https://github.com/apache/nuttx/pull/17468#issuecomment-3660925314

Because this example can exercise (not ideally) the pthread mutex
I decided to add it to apps/testing/sched, the program name will
be called "pmutexp" (because "pmp" is not a good name).

Signed-off-by: Alan C. Assis <acassis@gmail.com>
This commit is contained in:
Alan Carvalho de Assis 2025-12-16 15:59:55 -03:00 • committed by Alan C. Assis
parent a5e455cc1c
commit 8cb7dd0694
5 changed files with 273 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

41
testing/sched/pthread_mutex_perf/CMakeLists.txt Normal file
View file

@ -0,0 +1,41 @@
# ##############################################################################
# apps/testing/sched/pthread_mutex_perf/CMakeLists.txt
#
# SPDX-License-Identifier: Apache-2.0
#
# 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.
#
# ##############################################################################
if(CONFIG_TESTING_PTHREAD_MUTEX_PERF)
set(SRCS pthread_mutex_perf.c)
nuttx_add_application(
NAME
${CONFIG_TESTING_PTHREAD_MUTEX_PERF_PROGNMAE}
PRIORITY
${CONFIG_TESTING_PTHREAD_MUTEX_PERF_PRIORITY}
STACKSIZE
${CONFIG_TESTING_PTHREAD_MUTEX_PERF_STACKSIZE}
MODULE
${CONFIG_TESTING_PTHREAD_MUTEX_PERF}
COMPILE_FLAGS
${FLAGS}
SRCS
${SRCS})
endif()

30
testing/sched/pthread_mutex_perf/Kconfig Normal file
View file

@ -0,0 +1,30 @@
#
# For a description of the syntax of this configuration file,
# see the file kconfig-language.txt in the NuttX tools repository.
#
config TESTING_PTHREAD_MUTEX_PERF
bool "Pthread Mutex Performance (pmutexp) testing"
default n
---help---
Pthread Mutex Performance (pmp) helps to analyze the pthread
mutex performance, by calling the function many times.
if TESTING_PTHREAD_MUTEX_PERF
config TESTING_PTHREAD_MUTEX_PERF_PROGNAME
string "Program name"
default "pmutexp"
---help---
This is the name of the program that will be used when the NSH ELF
program is installed.
config TESTING_PTHREAD_MUTEX_PERF_PRIORITY
int "Priority of pmutexp process"
default 100
config TESTING_PTHREAD_MUTEX_PERF_STACKSIZE
int "Stack size of pmutexp process"
default DEFAULT_TASK_STACKSIZE
endif

25
testing/sched/pthread_mutex_perf/Make.defs Normal file
View file

@ -0,0 +1,25 @@
############################################################################
# apps/testing/sched/pthread_mutex_perf/Make.defs
#
# SPDX-License-Identifier: Apache-2.0
#
# 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.
#
############################################################################
ifneq ($(CONFIG_TESTING_PTHREAD_MUTEX_PERF),)
CONFIGURED_APPS += $(APPDIR)/testing/sched/pthread_mutex_perf
endif

32
testing/sched/pthread_mutex_perf/Makefile Normal file
View file

@ -0,0 +1,32 @@
############################################################################
# apps/testing/sched/pthread_mutex_perf/Makefile
#
# SPDX-License-Identifier: Apache-2.0
#
# 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.
#
############################################################################
include $(APPDIR)/Make.defs
PROGNAME = $(CONFIG_TESTING_PTHREAD_MUTEX_PERF_PROGNAME)
PRIORITY = $(CONFIG_TESTING_PTHREAD_MUTEX_PERF_PRIORITY)
STACKSIZE = $(CONFIG_TESTING_PTHREAD_MUTEX_PERF_STACKSIZE)
MODULE = $(CONFIG_TESTING_PTHREAD_MUTEX_PERF)
MAINSRC = pthread_mutex_perf.c
include $(APPDIR)/Application.mk

145
testing/sched/pthread_mutex_perf/pthread_mutex_perf.c Normal file
View file

@ -0,0 +1,145 @@
/****************************************************************************
* apps/testing/sched/pthread_mutex_perf/pthread_mutex_perf.c
*
* SPDX-License-Identifier: Apache-2.0
*
* 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdio.h>
#include <pthread.h>
/****************************************************************************
* Private Functions
****************************************************************************/
pthread_mutex_t g_mutex = PTHREAD_MUTEX_INITIALIZER;
static void timespec_diff(const struct timespec *start,
const struct timespec *end,
struct timespec *diff)
{
diff->tv_sec = end->tv_sec - start->tv_sec;
diff->tv_nsec = end->tv_nsec - start->tv_nsec;
if (diff->tv_nsec < 0)
{
diff->tv_sec--;
diff->tv_nsec += 1000000000;
}
}
static void timespec_add(struct timespec *total, const struct timespec *diff)
{
total->tv_sec += diff->tv_sec;
total->tv_nsec += diff->tv_nsec;
if (total->tv_nsec >= 1000000000)
{
total->tv_sec += total->tv_nsec / 1000000000;
total->tv_nsec = total->tv_nsec % 1000000000;
}
}
static void timespec_avg(const struct timespec *total, int count,
struct timespec *avg)
{
uint64_t total_ns = (uint64_t)total->tv_sec * 1000000000 + total->tv_nsec;
uint64_t avg_ns = total_ns / count;
avg->tv_sec = avg_ns / 1000000000;
avg->tv_nsec = avg_ns % 1000000000;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* pmp_main
****************************************************************************/
int main(int argc, char *argv[])
{
struct timespec start;
struct timespec end;
struct timespec diff;
struct timespec total = {
0, 0
};
struct timespec avg;
int i;
int j = 0;
const int loop_count = 10;
while (j < loop_count)
{
i = 0;
j++;
/* Get the starting time */
clock_gettime(CLOCK_BOOTTIME, &start);
/* Do 1 million interactions trying to lock an already locked mutex */
pthread_mutex_lock(&g_mutex);
while (i < 1000 * 1000)
{
i++;
pthread_mutex_trylock(&g_mutex);
}
pthread_mutex_unlock(&g_mutex);
/* Get the finished time */
clock_gettime(CLOCK_BOOTTIME, &end);
/* Get the calculated elapsed time */
timespec_diff(&start, &end, &diff);
/* Add it to total time for each loop pass */
timespec_add(&total, &diff);
/* Get the average time */
timespec_avg(&total, j, &avg);
printf("%d: diff = %lu.%09lu s | avg = %lu.%09lu s\n", j,
(unsigned long)diff.tv_sec, (unsigned long)diff.tv_nsec,
(unsigned long)avg.tv_sec, (unsigned long)avg.tv_nsec);
}
printf("\n===== result =====\n");
printf("count: %d\n", loop_count);
printf("total: %lu.%09lu s\n", (unsigned long)total.tv_sec,
(unsigned long)total.tv_nsec);
printf("avg: %lu.%09lu s\n", (unsigned long)avg.tv_sec,
(unsigned long)avg.tv_nsec);
return 0;
}