tests: kernel: added memory pool threadsafe test
TestPurpose: verify API thread safe in multi-threads environment. Jira: ZEP-1210 Change-Id: I1ff8231db8ebcd5713d6083379d0ebfbdabeeee0 Signed-off-by: Sharron LIU <sharron.liu@intel.com>
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4
tests/kernel/mem_pool/test_mpool_threadsafe/Makefile
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tests/kernel/mem_pool/test_mpool_threadsafe/Makefile
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BOARD ?= qemu_x86
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CONF_FILE = prj.conf
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include ${ZEPHYR_BASE}/Makefile.test
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tests/kernel/mem_pool/test_mpool_threadsafe/prj.conf
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tests/kernel/mem_pool/test_mpool_threadsafe/prj.conf
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CONFIG_ZTEST=y
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CONFIG_SYS_CLOCK_TICKS_PER_SEC=1000
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# 1 millisecond
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CONFIG_TIMESLICE_SIZE=1
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3
tests/kernel/mem_pool/test_mpool_threadsafe/src/Makefile
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tests/kernel/mem_pool/test_mpool_threadsafe/src/Makefile
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include $(ZEPHYR_BASE)/tests/Makefile.test
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obj-y = main.o test_mpool_threadsafe.o
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27
tests/kernel/mem_pool/test_mpool_threadsafe/src/main.c
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tests/kernel/mem_pool/test_mpool_threadsafe/src/main.c
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/*
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* Copyright (c) 2016 Intel Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <ztest.h>
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extern void test_mpool_threadsafe(void);
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/*test case main entry*/
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void test_main(void *p1, void *p2, void *p3)
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{
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ztest_test_suite(test_mpool_threadsafe,
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ztest_unit_test(test_mpool_threadsafe));
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ztest_run_test_suite(test_mpool_threadsafe);
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}
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/*
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* Copyright (c) 2016 Intel Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @addtogroup t_mpool
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* @{
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* @defgroup t_mpool_threadsafe test_mpool_threadsafe
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* @brief TestPurpose: verify API thread safe in multi-threads environment.
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* @details This's an extensive test. Multiple threads in same priority are
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* created, with time slice scheduling enabled in a very small slicing size:
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* 1 millisecond (refer to prj.conf).
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* All threads share a same entry function to invoke same kernel APIs.
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* Unless explicitly stated, kernel APIs are supposed to be thread safe.
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* Expect all threads should complete and exit the entry function normally.
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*
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* NOTE:
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* # API functionality is not TESTPOINT here. When invoked by multiple
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* threads, each API following its own behavior specification returns either
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* success or failure. Like, memory allocation successful or fail is pending on
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* whether any free memory blocks are available at the moment when the API is
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* invoked by a thread just got scheduled in.
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* # For kernel object APIs, more than one instance of the same object type are
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* created. Like, 4 threads operating on 2 instances, the test would cover the
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* kernel's code branches that handling "multiple threads accessing to a same
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* instance" and that handling "multiple instances serving simultaneously".
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* # The test adopts a slicing size in 1 millisecond. Thread safe theoretically
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* should work in a smaller slicing size. But this does not intent to stress
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* test that.
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* @}
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*/
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#include <ztest.h>
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#include <atomic.h>
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#define THREAD_NUM 4
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#define STACK_SIZE 512
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#define POOL_NUM 2
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#define TIMEOUT 200
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#define BLK_SIZE_MIN 4
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#define BLK_SIZE_MAX 16
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#define BLK_NUM_MIN 8
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#define BLK_NUM_MAX 2
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#define BLK_ALIGN BLK_SIZE_MIN
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K_MEM_POOL_DEFINE(mpool1, BLK_SIZE_MIN, BLK_SIZE_MAX, BLK_NUM_MAX, BLK_ALIGN);
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K_MEM_POOL_DEFINE(mpool2, BLK_SIZE_MIN, BLK_SIZE_MAX, BLK_NUM_MAX, BLK_ALIGN);
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static char __noinit __stack tstack[THREAD_NUM][STACK_SIZE];
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static struct k_mem_pool *pools[POOL_NUM] = {&mpool1, &mpool2};
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static struct k_sem sync_sema;
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static atomic_t pool_id;
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/* thread entry simply invoke the APIs*/
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static void tmpool_api(void *p1, void *p2, void *p3)
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{
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struct k_mem_block block[BLK_NUM_MIN];
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struct k_mem_pool *pool = pools[atomic_inc(&pool_id) % POOL_NUM];
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memset(block, 0, sizeof(block));
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for (int i = 0; i < 4; i++) {
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k_mem_pool_alloc(pool, &block[i], BLK_SIZE_MIN, TIMEOUT);
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}
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k_mem_pool_alloc(pool, &block[4], BLK_SIZE_MAX, TIMEOUT);
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for (int i = 0; i < 5; i++) {
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if (block[i].data) {
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k_mem_pool_free(&block[i]);
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block[i].data = NULL;
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}
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}
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k_mem_pool_defrag(pool);
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k_sem_give(&sync_sema);
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}
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/* test cases*/
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void test_mpool_threadsafe(void)
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{
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k_tid_t tid[THREAD_NUM];
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k_sem_init(&sync_sema, 0, THREAD_NUM);
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/* create multiple threads to invoke same memory pool APIs*/
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for (int i = 0; i < THREAD_NUM; i++) {
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tid[i] = k_thread_spawn(tstack[i], STACK_SIZE,
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tmpool_api, NULL, NULL, NULL,
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K_PRIO_PREEMPT(1), 0, 0);
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}
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/* TESTPOINT: all threads complete and exit the entry function*/
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for (int i = 0; i < THREAD_NUM; i++) {
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k_sem_take(&sync_sema, K_FOREVER);
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}
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/* test case tear down*/
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for (int i = 0; i < THREAD_NUM; i++) {
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k_thread_abort(tid[i]);
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}
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}
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2
tests/kernel/mem_pool/test_mpool_threadsafe/testcase.ini
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2
tests/kernel/mem_pool/test_mpool_threadsafe/testcase.ini
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[test]
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tags = kernel
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