From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 3B52AA0C41; Sat, 9 Oct 2021 09:43:01 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 72C574113A; Sat, 9 Oct 2021 09:42:18 +0200 (CEST) Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by mails.dpdk.org (Postfix) with ESMTP id A6FE74067A for ; Sat, 9 Oct 2021 09:42:07 +0200 (CEST) Received: by linux.microsoft.com (Postfix, from userid 1059) id 3676120B8965; Sat, 9 Oct 2021 00:42:05 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 3676120B8965 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1633765326; bh=QOvlMZINHZvR4AuAmm5OSbsOU1Sy6BoLrVsQM/clu9k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=H/JGyGGdA0ApL2BJ5VWMKlwWaLy6Hb37hd3Ec/lAHOadH9ZWSCpGlLprqGl1lm9gF bY4sQ9YiSQksGWP4SRToNJW4X5ZjU/yIND8QX6z+9RV1xD4woYuOps67+1yHN3wFDT S9E8zH/Yqr6UhtOSfsAlGkS8FvzCK5Oxr2gUFYJ0= From: Narcisa Ana Maria Vasile To: dev@dpdk.org, thomas@monjalon.net, dmitry.kozliuk@gmail.com, khot@microsoft.com, navasile@microsoft.com, dmitrym@microsoft.com, roretzla@microsoft.com, talshn@nvidia.com, ocardona@microsoft.com Cc: bruce.richardson@intel.com, david.marchand@redhat.com, pallavi.kadam@intel.com Date: Sat, 9 Oct 2021 00:41:58 -0700 Message-Id: <1633765318-28356-10-git-send-email-navasile@linux.microsoft.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1633765318-28356-1-git-send-email-navasile@linux.microsoft.com> References: <1633732841-17873-1-git-send-email-navasile@linux.microsoft.com> <1633765318-28356-1-git-send-email-navasile@linux.microsoft.com> Subject: [dpdk-dev] [PATCH v16 9/9] Add unit tests for thread API X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" From: Narcisa Vasile As a new API for threading is introduced, a set of unit tests have been added to test the new interface. The tests verify that: * mutexes and barriers behave as expected * thread properties are applied correctly * the thread id is retrieved correctly * thread creation/destruction works properly Signed-off-by: Narcisa Vasile --- app/test/meson.build | 2 + app/test/test_threads.c | 372 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 374 insertions(+) create mode 100644 app/test/test_threads.c diff --git a/app/test/meson.build b/app/test/meson.build index f144d8b8ed..019c7e27d0 100644 --- a/app/test/meson.build +++ b/app/test/meson.build @@ -141,6 +141,7 @@ test_sources = files( 'test_table_tables.c', 'test_tailq.c', 'test_thash.c', + 'test_threads.c', 'test_timer.c', 'test_timer_perf.c', 'test_timer_racecond.c', @@ -277,6 +278,7 @@ fast_tests = [ ['reorder_autotest', true], ['service_autotest', true], ['thash_autotest', true], + ['threads_autotest', true], ['trace_autotest', true], ] diff --git a/app/test/test_threads.c b/app/test/test_threads.c new file mode 100644 index 0000000000..d125a55b2e --- /dev/null +++ b/app/test/test_threads.c @@ -0,0 +1,372 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright (c) 2021 Microsoft. + */ + +#include +#include + +#include "test.h" + +#define THREADS_COUNT 20 + +RTE_LOG_REGISTER(threads_logtype_test, test.threads, INFO); + +static void * +thread_loop_self(void *arg) +{ + rte_thread_t *id = arg; + + *id = rte_thread_self(); + + return NULL; +} + +static int +test_thread_self(void) +{ + rte_thread_t threads_ids[THREADS_COUNT]; + rte_thread_t self_ids[THREADS_COUNT] = {}; + int ret; + int i; + + for (i = 0; i < THREADS_COUNT; ++i) { + ret = rte_thread_create(&threads_ids[i], NULL, thread_loop_self, + &self_ids[i]); + RTE_TEST_ASSERT(ret == 0, "Failed to create threads!"); + } + + for (i = 0; i < THREADS_COUNT; ++i) { + RTE_TEST_ASSERT(rte_thread_join(threads_ids[i], NULL) == 0, "Failed to join thread!"); + RTE_TEST_ASSERT_EQUAL(threads_ids[i].opaque_id, + self_ids[i].opaque_id, "Unexpected thread id!"); + } + + return 0; +} + +struct thread_context { + rte_thread_barrier *barrier; + int barrier_result; +}; + +static void * +thread_loop_barrier(void *arg) +{ + struct thread_context *ctx = arg; + + ctx->barrier_result = rte_thread_barrier_wait(ctx->barrier); + if (ctx->barrier_result > 0) + rte_log(RTE_LOG_DEBUG, threads_logtype_test, "Failed to wait at barrier!"); + + return NULL; +} + +static int +test_thread_barrier(void) +{ + rte_thread_t thread_id; + struct thread_context ctx; + rte_thread_barrier barrier; + int ret = 0; + int result = 0; + + ret = rte_thread_barrier_init(&barrier, 2); + RTE_TEST_ASSERT(ret == 0, "Failed to initialize barrier!"); + + ctx.barrier = &barrier; + ret = rte_thread_create(&thread_id, NULL, thread_loop_barrier, &ctx); + RTE_TEST_ASSERT(ret == 0, "Failed to create thread!"); + + result = rte_thread_barrier_wait(&barrier); + RTE_TEST_ASSERT(result <= 0, "Failed to wait at the barrier!"); + + ret = rte_thread_join(thread_id, NULL); + RTE_TEST_ASSERT(ret == 0, "Failed to join threads!"); + + ret = rte_thread_barrier_destroy(&barrier); + RTE_TEST_ASSERT(ret == 0, "Failed to destroy barrier!"); + + RTE_TEST_ASSERT(ctx.barrier_result <= 0, "Child thread failed to wait at the barrier!"); + RTE_TEST_ASSERT_NOT_EQUAL(ctx.barrier_result, result, "Threads were not blocked at the barrier!"); + + return 0; +} + +RTE_STATIC_MUTEX(static_mutex); + +struct mutex_loop_args { + rte_thread_barrier *barrier; + rte_thread_mutex *mutex; + unsigned long result_A; + unsigned long result_B; +}; + +static void * +thread_loop_mutex_B(void *arg) +{ + struct mutex_loop_args *args = arg; + + if (rte_thread_mutex_try_lock(args->mutex) == 0) { + rte_thread_barrier_wait(args->barrier); + rte_thread_mutex_unlock(args->mutex); + args->result_B = 1; + } else { + rte_thread_barrier_wait(args->barrier); + args->result_B = 2; + } + + return NULL; +} + +static void * +thread_loop_mutex_A(void *arg) +{ + struct mutex_loop_args *args = arg; + + if (rte_thread_mutex_try_lock(args->mutex) != 0) { + rte_thread_barrier_wait(args->barrier); + args->result_A = 2; + } else { + rte_thread_barrier_wait(args->barrier); + rte_thread_mutex_unlock(args->mutex); + args->result_A = 1; + } + + return NULL; +} + +static int +test_thread_mutex(rte_thread_mutex *pmutex) +{ + rte_thread_t thread_A; + rte_thread_t thread_B; + rte_thread_mutex mutex; + rte_thread_barrier barrier; + struct mutex_loop_args args; + int ret = 0; + + /* If mutex is not statically initialized */ + if (pmutex == NULL) { + ret = rte_thread_mutex_init(&mutex); + RTE_TEST_ASSERT(ret == 0, "Failed to initialize mutex!"); + } else + mutex = *pmutex; + + ret = rte_thread_barrier_init(&barrier, 2); + RTE_TEST_ASSERT(ret == 0, "Failed to initialize barrier!"); + + args.mutex = &mutex; + args.barrier = &barrier; + + ret = rte_thread_create(&thread_A, NULL, thread_loop_mutex_A, &args); + RTE_TEST_ASSERT(ret == 0, "Failed to create thread!"); + + ret = rte_thread_create(&thread_B, NULL, thread_loop_mutex_B, &args); + RTE_TEST_ASSERT(ret == 0, "Failed to create thread!"); + + ret = rte_thread_join(thread_A, NULL); + RTE_TEST_ASSERT(ret == 0, "Failed to join thread!"); + + ret = rte_thread_join(thread_B, NULL); + RTE_TEST_ASSERT(ret == 0, "Failed to join thread!"); + + RTE_TEST_ASSERT(args.result_A != args.result_B, "Mutex failed to be acquired or was acquired by both threads!"); + + /* Destroy if dynamically initialized */ + if (pmutex == NULL) { + ret = rte_thread_mutex_destroy(&mutex); + RTE_TEST_ASSERT(ret == 0, "Failed to destroy mutex!"); + } + + ret = rte_thread_barrier_destroy(&barrier); + RTE_TEST_ASSERT(ret == 0, "Failed to destroy barrier!"); + + return ret; +} + +static int +test_thread_mutex_static(void) +{ + return test_thread_mutex(&static_mutex); +} + +static int +test_thread_mutex_dynamic(void) +{ + return test_thread_mutex(NULL); +} + +struct thread_affinity_ctx { + rte_cpuset_t *cpuset; + unsigned int result; +}; + +static void * +thread_loop_attributes_affinity(void *arg) +{ + struct thread_affinity_ctx *ctx = arg; + rte_cpuset_t cpuset; + size_t i; + + ctx->result = 0; + + CPU_ZERO(&cpuset); + if (rte_thread_get_affinity_by_id(rte_thread_self(), &cpuset) != 0) { + ctx->result = 1; + rte_log(RTE_LOG_DEBUG, threads_logtype_test, "Failed to get thread affinity!"); + return NULL; + } + + /* + * Check that the thread is not running on CPUs which were not + * specified in the affinity mask. Note that the CPU mask + * retrieved above can be different than the original mask specified + * with rte_thread_attr_set_affinity(), since some CPUs may not be + * available on the system. + */ + for (i = 0; i < CPU_SETSIZE; ++i) { + if (!CPU_ISSET(i, ctx->cpuset) && CPU_ISSET(i, &cpuset)) { + ctx->result = 1; + rte_log(RTE_LOG_DEBUG, threads_logtype_test, "CPU %zu should not be set for this thread!\n", + i); + return NULL; + } + } + + return NULL; +} + +static int +test_thread_attributes_affinity(void) +{ + rte_thread_t threads_ids[THREADS_COUNT]; + struct thread_affinity_ctx ctx[THREADS_COUNT] = {}; + rte_thread_attr_t attr; + rte_cpuset_t cpuset; + size_t i; + int ret = 0; + + ret = rte_thread_attr_init(&attr); + RTE_TEST_ASSERT(ret == 0, "Failed to initialize thread attributes!"); + + CPU_ZERO(&cpuset); + ret = rte_thread_get_affinity_by_id(rte_thread_self(), &cpuset); + RTE_TEST_ASSERT(ret == 0, "Failed to get main thread affinity!"); + + ret = rte_thread_attr_set_affinity(&attr, &cpuset); + RTE_TEST_ASSERT(ret == 0, "Failed to set thread attributes!"); + + for (i = 0; i < THREADS_COUNT; ++i) { + ctx[i].cpuset = &cpuset; + ret = rte_thread_create(&threads_ids[i], &attr, + thread_loop_attributes_affinity, &ctx[i]); + RTE_TEST_ASSERT(ret == 0, "Failed to create threads!"); + } + + for (i = 0; i < THREADS_COUNT; ++i) { + ret = rte_thread_join(threads_ids[i], NULL); + RTE_TEST_ASSERT(ret == 0, "Failed to join threads!"); + + RTE_TEST_ASSERT_EQUAL(ctx[i].result, 0, "Unexpected thread affinity!"); + } + + return ret; +} + +static void * +thread_loop_priority(void *arg) +{ + int ret; + enum rte_thread_priority priority; + int *result = arg; + + *result = 1; + ret = rte_thread_get_priority(rte_thread_self(), &priority); + if (ret != 0 || priority != RTE_THREAD_PRIORITY_NORMAL) + *result = 2; + + return NULL; +} + +static int +test_thread_attributes_priority(void) +{ + rte_thread_t threads_ids[THREADS_COUNT]; + rte_thread_attr_t attr; + size_t i; + int ret = 0; + int results[THREADS_COUNT] = {}; + + ret = rte_thread_attr_init(&attr); + RTE_TEST_ASSERT(ret == 0, "Failed to initialize thread attributes!"); + + ret = rte_thread_attr_set_priority(&attr, RTE_THREAD_PRIORITY_NORMAL); + RTE_TEST_ASSERT(ret == 0, "Failed to set thread priority!"); + + for (i = 0; i < THREADS_COUNT; ++i) { + ret = rte_thread_create(&threads_ids[i], &attr, + thread_loop_priority, &results[i]); + RTE_TEST_ASSERT(ret == 0, "Failed to create threads!"); + } + + for (i = 0; i < THREADS_COUNT; ++i) { + ret = rte_thread_join(threads_ids[i], NULL); + RTE_TEST_ASSERT(ret == 0, "Failed to join threads!"); + + RTE_TEST_ASSERT_EQUAL(results[i], 1, "Unexpected priority value!"); + } + + return ret; +} + +static void * +thread_loop_return(void *arg) +{ + RTE_SET_USED(arg); + return NULL; +} + +static int +test_thread_detach(void) +{ + rte_thread_t threads_ids[THREADS_COUNT]; + size_t i; + int ret = 0; + + for (i = 0; i < THREADS_COUNT; ++i) { + ret = rte_thread_create(&threads_ids[i], NULL, + thread_loop_return, NULL); + RTE_TEST_ASSERT(ret == 0, "Failed to create threads!"); + } + + for (i = 0; i < THREADS_COUNT; ++i) { + ret = rte_thread_detach(threads_ids[i]); + RTE_TEST_ASSERT(ret == 0, "Failed to detach thread!"); + } + + return ret; +} + +static struct unit_test_suite threads_test_suite = { + .suite_name = "threads autotest", + .setup = NULL, + .teardown = NULL, + .unit_test_cases = { + TEST_CASE(test_thread_self), + TEST_CASE(test_thread_barrier), + TEST_CASE(test_thread_mutex_static), + TEST_CASE(test_thread_mutex_dynamic), + TEST_CASE(test_thread_attributes_affinity), + TEST_CASE(test_thread_attributes_priority), + TEST_CASE(test_thread_detach), + TEST_CASES_END() + } +}; + +static int +test_threads(void) +{ + return unit_test_suite_runner(&threads_test_suite); +} + +REGISTER_TEST_COMMAND(threads_autotest, test_threads); -- 2.31.0.vfs.0.1