test_taskprocessor.c

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/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 2012-2013, Digium, Inc.
 *
 * Mark Michelson <[email protected]>
 *
 * See http://www.asterisk.org for more information about
 * the Asterisk project. Please do not directly contact
 * any of the maintainers of this project for assistance;
 * the project provides a web site, mailing lists and IRC
 * channels for your use.
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License Version 2. See the LICENSE file
 * at the top of the source tree.
 */

/*!
 * \file
 * \brief taskprocessor unit tests
 *
 * \author Mark Michelson <[email protected]>
 *
 */

/*** MODULEINFO
 <depend>TEST_FRAMEWORK</depend>
 <support_level>core</support_level>
 ***/

#include "asterisk.h"

#include "asterisk/test.h"
#include "asterisk/taskprocessor.h"
#include "asterisk/module.h"
#include "asterisk/astobj2.h"
#include "asterisk/serializer.h"
#include "asterisk/threadpool.h"

/*!
 * \brief userdata associated with baseline taskprocessor test
 */
struct task_data {
 /* Condition used to signal to queuing thread that task was executed */
 ast_cond_t cond;
 /* Lock protecting the condition */
 ast_mutex_t lock;
 /*! Boolean indicating that the task was run */
 int task_complete;
 /*! Milliseconds to wait before returning */
 unsigned long wait_time;
};

static void task_data_dtor(void *obj)
{
 struct task_data *task_data = obj;

 ast_mutex_destroy(&task_data->lock);
 ast_cond_destroy(&task_data->cond);
}

/*! \brief Create a task_data object */
static struct task_data *task_data_create(void)
{
 struct task_data *task_data =
 ao2_alloc(sizeof(*task_data), task_data_dtor);

 if (!task_data) {
 return NULL;
 }

 ast_cond_init(&task_data->cond, NULL);
 ast_mutex_init(&task_data->lock);
 task_data->task_complete = 0;
 task_data->wait_time = 0;

 return task_data;
}

/*!
 * \brief Queued task for baseline test.
 *
 * The task simply sets a boolean to indicate the
 * task has been run and then signals a condition
 * saying it's complete
 */
static int task(void *data)
{
 struct task_data *task_data = data;

 SCOPED_MUTEX(lock, &task_data->lock);
 if (task_data->wait_time > 0) {
 usleep(task_data->wait_time * 1000);
 }
 task_data->task_complete = 1;
 ast_cond_signal(&task_data->cond);
 return 0;
}

/*!
 * \brief Wait for a task to execute.
 */
static int task_wait(struct task_data *task_data)
{
 struct timeval start = ast_tvnow();
 struct timespec end;
 SCOPED_MUTEX(lock, &task_data->lock);

 end.tv_sec = start.tv_sec + 30;
 end.tv_nsec = start.tv_usec * 1000;

 while (!task_data->task_complete) {
 int res;
 res = ast_cond_timedwait(&task_data->cond, &task_data->lock,
 &end);
 if (res == ETIMEDOUT) {
 return -1;
 }
 }

 return 0;
}

/*!
 * \brief Baseline test for default taskprocessor
 *
 * This test ensures that when a task is added to a taskprocessor that
 * has been allocated with a default listener that the task gets executed
 * as expected
 */
AST_TEST_DEFINE(default_taskprocessor)
{
 RAII_VAR(struct ast_taskprocessor *, tps, NULL, ast_taskprocessor_unreference);
 RAII_VAR(struct task_data *, task_data, NULL, ao2_cleanup);
 int res;

 switch (cmd) {
 case TEST_INIT:
 info->name = "default_taskprocessor";
 info->category = "/main/taskprocessor/";
 info->summary = "Test of default taskproccesor";
 info->description =
 "Ensures that a queued task gets executed.";
 return AST_TEST_NOT_RUN;
 case TEST_EXECUTE:
 break;
 }

 tps = ast_taskprocessor_get("test", TPS_REF_DEFAULT);

 if (!tps) {
 ast_test_status_update(test, "Unable to create test taskprocessor\n");
 return AST_TEST_FAIL;
 }

 task_data = task_data_create();
 if (!task_data) {
 ast_test_status_update(test, "Unable to create task_data\n");
 return AST_TEST_FAIL;
 }

 if (ast_taskprocessor_push(tps, task, task_data)) {
 ast_test_status_update(test, "Failed to queue task\n");
 return AST_TEST_FAIL;
 }

 res = task_wait(task_data);
 if (res != 0) {
 ast_test_status_update(test, "Queued task did not execute!\n");
 return AST_TEST_FAIL;
 }

 return AST_TEST_PASS;
}

/*!
 * \brief Baseline test for subsystem alert
 */
AST_TEST_DEFINE(subsystem_alert)
{
 RAII_VAR(struct ast_taskprocessor *, tps, NULL, ast_taskprocessor_unreference);
#define TEST_DATA_ARRAY_SIZE 10
#define LOW_WATER_MARK 3
#define HIGH_WATER_MARK 6
 struct task_data *task_data[(TEST_DATA_ARRAY_SIZE + 1)] = { 0 };
 int res = 0;
 int i;
 long queue_count;
 unsigned int alert_level;
 unsigned int subsystem_alert_level;

 switch (cmd) {
 case TEST_INIT:
 info->name = "subsystem_alert";
 info->category = "/main/taskprocessor/";
 info->summary = "Test of subsystem alerts";
 info->description =
 "Ensures alerts are generated properly.";
 return AST_TEST_NOT_RUN;
 case TEST_EXECUTE:
 break;
 }

 tps = ast_taskprocessor_get("test_subsystem/test", TPS_REF_DEFAULT);

 if (!tps) {
 ast_test_status_update(test, "Unable to create test taskprocessor\n");
 return AST_TEST_FAIL;
 }

 ast_taskprocessor_alert_set_levels(tps, LOW_WATER_MARK, HIGH_WATER_MARK);
 ast_taskprocessor_suspend(tps);

 for (i = 1; i <= TEST_DATA_ARRAY_SIZE; i++) {
 task_data[i] = task_data_create();
 if (!task_data[i]) {
 ast_test_status_update(test, "Unable to create task_data\n");
 res = -1;
 goto data_cleanup;
 }
 task_data[i]->wait_time = 500;

 ast_test_status_update(test, "Pushing task %d\n", i);
 if (ast_taskprocessor_push(tps, task, task_data[i])) {
 ast_test_status_update(test, "Failed to queue task\n");
 res = -1;
 goto data_cleanup;
 }

 queue_count = ast_taskprocessor_size(tps);
 alert_level = ast_taskprocessor_alert_get();
 subsystem_alert_level = ast_taskprocessor_get_subsystem_alert("test_subsystem");

 if (queue_count == HIGH_WATER_MARK) {
 if (subsystem_alert_level) {
 ast_test_status_update(test, "Subsystem alert triggered correctly at %ld\n", queue_count);
 }
 if (alert_level) {
 ast_test_status_update(test, "Global alert triggered correctly at %ld\n", queue_count);
 }
 } else if (queue_count < HIGH_WATER_MARK) {
 if (subsystem_alert_level > 0) {
 ast_test_status_update(test, "Subsystem alert triggered unexpectedly at %ld\n", queue_count);
 res = -1;
 }
 if (alert_level > 0) {
 ast_test_status_update(test, "Global alert triggered unexpectedly at %ld\n", queue_count);
 res = -1;
 }
 } else {
 if (subsystem_alert_level == 0) {
 ast_test_status_update(test, "Subsystem alert failed to trigger at %ld\n", queue_count);
 res = -1;
 }
 if (alert_level == 0) {
 ast_test_status_update(test, "Global alert failed to trigger at %ld\n", queue_count);
 res = -1;
 }
 }
 }

 ast_taskprocessor_unsuspend(tps);

 for (i = 1; i <= TEST_DATA_ARRAY_SIZE; i++) {
 ast_test_status_update(test, "Waiting on task %d\n", i);
 if (task_wait(task_data[i])) {
 ast_test_status_update(test, "Queued task '%d' did not execute!\n", i);
 res = -1;
 goto data_cleanup;
 }

 queue_count = ast_taskprocessor_size(tps);
 alert_level = ast_taskprocessor_alert_get();
 subsystem_alert_level = ast_taskprocessor_get_subsystem_alert("test_subsystem");

 if (queue_count == LOW_WATER_MARK) {
 if (!subsystem_alert_level) {
 ast_test_status_update(test, "Subsystem alert cleared correctly at %ld\n", queue_count);
 }
 if (!alert_level) {
 ast_test_status_update(test, "Global alert cleared correctly at %ld\n", queue_count);
 }
 } else if (queue_count > LOW_WATER_MARK) {
 if (subsystem_alert_level == 0) {
 ast_test_status_update(test, "Subsystem alert cleared unexpectedly at %ld\n", queue_count);
 res = -1;
 }
 if (alert_level == 0) {
 ast_test_status_update(test, "Global alert cleared unexpectedly at %ld\n", queue_count);
 res = -1;
 }
 } else {
 if (subsystem_alert_level > 0) {
 ast_test_status_update(test, "Subsystem alert failed to clear at %ld\n", queue_count);
 res = -1;
 }
 if (alert_level > 0) {
 ast_test_status_update(test, "Global alert failed to clear at %ld\n", queue_count);
 res = -1;
 }
 }

 }

data_cleanup:
 for (i = 1; i <= TEST_DATA_ARRAY_SIZE; i++) {
 ao2_cleanup(task_data[i]);
 }

 return res ? AST_TEST_FAIL : AST_TEST_PASS;
}

#define NUM_TASKS 20000

/*!
 * \brief Relevant data associated with taskprocessor load test
 */
static struct load_task_data {
 /*! Condition used to indicate a task has completed executing */
 ast_cond_t cond;
 /*! Lock used to protect the condition */
 ast_mutex_t lock;
 /*! Counter of the number of completed tasks */
 int tasks_completed;
 /*! Storage for task-specific data */
 int task_rand[NUM_TASKS];
} load_task_results;

/*!
 * \brief a queued task to be used in the taskprocessor load test
 *
 * The task increments the number of tasks executed and puts the passed-in
 * data into the next slot in the array of random data.
 */
static int load_task(void *data)
{
 int *randdata = data;
 SCOPED_MUTEX(lock, &load_task_results.lock);
 load_task_results.task_rand[load_task_results.tasks_completed++] = *randdata;
 ast_cond_signal(&load_task_results.cond);
 return 0;
}

/*!
 * \brief Load test for taskprocessor with default listener
 *
 * This test queues a large number of tasks, each with random data associated.
 * The test ensures that all of the tasks are run and that the tasks are executed
 * in the same order that they were queued
 */
AST_TEST_DEFINE(default_taskprocessor_load)
{
 struct ast_taskprocessor *tps;
 struct timeval start;
 struct timespec ts;
 enum ast_test_result_state res = AST_TEST_PASS;
 int timedwait_res;
 int i;
 int rand_data[NUM_TASKS];

 switch (cmd) {
 case TEST_INIT:
 info->name = "default_taskprocessor_load";
 info->category = "/main/taskprocessor/";
 info->summary = "Load test of default taskproccesor";
 info->description =
 "Ensure that a large number of queued tasks are executed in the proper order.";
 return AST_TEST_NOT_RUN;
 case TEST_EXECUTE:
 break;
 }

 tps = ast_taskprocessor_get("test", TPS_REF_DEFAULT);

 if (!tps) {
 ast_test_status_update(test, "Unable to create test taskprocessor\n");
 return AST_TEST_FAIL;
 }

 start = ast_tvnow();

 ts.tv_sec = start.tv_sec + 60;
 ts.tv_nsec = start.tv_usec * 1000;

 ast_cond_init(&load_task_results.cond, NULL);
 ast_mutex_init(&load_task_results.lock);
 load_task_results.tasks_completed = 0;

 for (i = 0; i < NUM_TASKS; ++i) {
 rand_data[i] = ast_random();
 if (ast_taskprocessor_push(tps, load_task, &rand_data[i])) {
 ast_test_status_update(test, "Failed to queue task\n");
 res = AST_TEST_FAIL;
 goto test_end;
 }
 }

 ast_mutex_lock(&load_task_results.lock);
 while (load_task_results.tasks_completed < NUM_TASKS) {
 timedwait_res = ast_cond_timedwait(&load_task_results.cond, &load_task_results.lock, &ts);
 if (timedwait_res == ETIMEDOUT) {
 break;
 }
 }
 ast_mutex_unlock(&load_task_results.lock);

 if (load_task_results.tasks_completed != NUM_TASKS) {
 ast_test_status_update(test, "Unexpected number of tasks executed. Expected %d but got %d\n",
 NUM_TASKS, load_task_results.tasks_completed);
 res = AST_TEST_FAIL;
 goto test_end;
 }

 for (i = 0; i < NUM_TASKS; ++i) {
 if (rand_data[i] != load_task_results.task_rand[i]) {
 ast_test_status_update(test, "Queued tasks did not execute in order\n");
 res = AST_TEST_FAIL;
 goto test_end;
 }
 }

test_end:
 tps = ast_taskprocessor_unreference(tps);
 ast_mutex_destroy(&load_task_results.lock);
 ast_cond_destroy(&load_task_results.cond);
 return res;
}

/*!
 * \brief Private data for the test taskprocessor listener
 */
struct test_listener_pvt {
 /* Counter of number of tasks pushed to the queue */
 int num_pushed;
 /* Counter of number of times the queue was emptied */
 int num_emptied;
 /* Counter of number of times that a pushed task occurred on an empty queue */
 int num_was_empty;
 /* Boolean indicating whether the shutdown callback was called */
 int shutdown;
};

/*!
 * \brief test taskprocessor listener's alloc callback
 */
static void *test_listener_pvt_alloc(void)
{
 struct test_listener_pvt *pvt;

 pvt = ast_calloc(1, sizeof(*pvt));
 return pvt;
}

/*!
 * \brief test taskprocessor listener's start callback
 */
static int test_start(struct ast_taskprocessor_listener *listener)
{
 return 0;
}

/*!
 * \brief test taskprocessor listener's task_pushed callback
 *
 * Adjusts private data's stats as indicated by the parameters.
 */
static void test_task_pushed(struct ast_taskprocessor_listener *listener, int was_empty)
{
 struct test_listener_pvt *pvt = ast_taskprocessor_listener_get_user_data(listener);
 ++pvt->num_pushed;
 if (was_empty) {
 ++pvt->num_was_empty;
 }
}

/*!
 * \brief test taskprocessor listener's emptied callback.
 */
static void test_emptied(struct ast_taskprocessor_listener *listener)
{
 struct test_listener_pvt *pvt = ast_taskprocessor_listener_get_user_data(listener);
 ++pvt->num_emptied;
}

/*!
 * \brief test taskprocessor listener's shutdown callback.
 */
static void test_shutdown(struct ast_taskprocessor_listener *listener)
{
 struct test_listener_pvt *pvt = ast_taskprocessor_listener_get_user_data(listener);
 pvt->shutdown = 1;
}

static const struct ast_taskprocessor_listener_callbacks test_callbacks = {
 .start = test_start,
 .task_pushed = test_task_pushed,
 .emptied = test_emptied,
 .shutdown = test_shutdown,
};

/*!
 * \brief Queued task for taskprocessor listener test.
 *
 * Does nothing.
 */
static int listener_test_task(void *ignore)
{
 return 0;
}

/*!
 * \brief helper to ensure that statistics the listener is keeping are what we expect
 *
 * \param test The currently-running test
 * \param pvt The private data for the taskprocessor listener
 * \param num_pushed The expected current number of tasks pushed to the processor
 * \param num_emptied The expected current number of times the taskprocessor has become empty
 * \param num_was_empty The expected current number of times that tasks were pushed to an empty taskprocessor
 * \retval -1 Stats were not as expected
 * \retval 0 Stats were as expected
 */
static int check_stats(struct ast_test *test, const struct test_listener_pvt *pvt, int num_pushed, int num_emptied, int num_was_empty)
{
 if (pvt->num_pushed != num_pushed) {
 ast_test_status_update(test, "Unexpected number of tasks pushed. Expected %d but got %d\n",
 num_pushed, pvt->num_pushed);
 return -1;
 }

 if (pvt->num_emptied != num_emptied) {
 ast_test_status_update(test, "Unexpected number of empties. Expected %d but got %d\n",
 num_emptied, pvt->num_emptied);
 return -1;
 }

 if (pvt->num_was_empty != num_was_empty) {
 ast_test_status_update(test, "Unexpected number of empties. Expected %d but got %d\n",
 num_was_empty, pvt->num_emptied);
 return -1;
 }

 return 0;
}

/*!
 * \brief Test for a taskprocessor with custom listener.
 *
 * This test pushes tasks to a taskprocessor with a custom listener, executes the taskss,
 * and destroys the taskprocessor.
 *
 * The test ensures that the listener's callbacks are called when expected and that the data
 * being passed in is accurate.
 */
AST_TEST_DEFINE(taskprocessor_listener)
{
 struct ast_taskprocessor *tps = NULL;
 struct ast_taskprocessor_listener *listener = NULL;
 struct test_listener_pvt *pvt = NULL;
 enum ast_test_result_state res = AST_TEST_PASS;

 switch (cmd) {
 case TEST_INIT:
 info->name = "taskprocessor_listener";
 info->category = "/main/taskprocessor/";
 info->summary = "Test of taskproccesor listeners";
 info->description =
 "Ensures that listener callbacks are called when expected.";
 return AST_TEST_NOT_RUN;
 case TEST_EXECUTE:
 break;
 }

 pvt = test_listener_pvt_alloc();
 if (!pvt) {
 ast_test_status_update(test, "Unable to allocate test taskprocessor listener user data\n");
 return AST_TEST_FAIL;
 }

 listener = ast_taskprocessor_listener_alloc(&test_callbacks, pvt);
 if (!listener) {
 ast_test_status_update(test, "Unable to allocate test taskprocessor listener\n");
 res = AST_TEST_FAIL;
 goto test_exit;
 }

 tps = ast_taskprocessor_create_with_listener("test_listener", listener);
 if (!tps) {
 ast_test_status_update(test, "Unable to allocate test taskprocessor\n");
 res = AST_TEST_FAIL;
 goto test_exit;
 }

 if (ast_taskprocessor_push(tps, listener_test_task, NULL)) {
 ast_test_status_update(test, "Failed to queue task\n");
 res = AST_TEST_FAIL;
 goto test_exit;
 }

 if (check_stats(test, pvt, 1, 0, 1) < 0) {
 res = AST_TEST_FAIL;
 goto test_exit;
 }

 if (ast_taskprocessor_push(tps, listener_test_task, NULL)) {
 ast_test_status_update(test, "Failed to queue task\n");
 res = AST_TEST_FAIL;
 goto test_exit;
 }

 if (check_stats(test, pvt, 2, 0, 1) < 0) {
 res = AST_TEST_FAIL;
 goto test_exit;
 }

 ast_taskprocessor_execute(tps);

 if (check_stats(test, pvt, 2, 0, 1) < 0) {
 res = AST_TEST_FAIL;
 goto test_exit;
 }

 ast_taskprocessor_execute(tps);

 if (check_stats(test, pvt, 2, 1, 1) < 0) {
 res = AST_TEST_FAIL;
 goto test_exit;
 }

 tps = ast_taskprocessor_unreference(tps);

 if (!pvt->shutdown) {
 res = AST_TEST_FAIL;
 goto test_exit;
 }

test_exit:
 ao2_cleanup(listener);
 /* This is safe even if tps is NULL */
 ast_taskprocessor_unreference(tps);
 ast_free(pvt);
 return res;
}

struct shutdown_data {
 ast_cond_t in;
 ast_cond_t out;
 ast_mutex_t lock;
 int task_complete;
 int task_started;
 int task_stop_waiting;
};

static void shutdown_data_dtor(void *data)
{
 struct shutdown_data *shutdown_data = data;
 ast_mutex_destroy(&shutdown_data->lock);
 ast_cond_destroy(&shutdown_data->in);
 ast_cond_destroy(&shutdown_data->out);
}

static struct shutdown_data *shutdown_data_create(int dont_wait)
{
 RAII_VAR(struct shutdown_data *, shutdown_data, NULL, ao2_cleanup);

 shutdown_data = ao2_alloc(sizeof(*shutdown_data), shutdown_data_dtor);
 if (!shutdown_data) {
 return NULL;
 }

 ast_mutex_init(&shutdown_data->lock);
 ast_cond_init(&shutdown_data->in, NULL);
 ast_cond_init(&shutdown_data->out, NULL);
 shutdown_data->task_stop_waiting = dont_wait;
 ao2_ref(shutdown_data, +1);
 return shutdown_data;
}

static int shutdown_task_exec(void *data)
{
 struct shutdown_data *shutdown_data = data;
 SCOPED_MUTEX(lock, &shutdown_data->lock);
 shutdown_data->task_started = 1;
 ast_cond_signal(&shutdown_data->out);
 while (!shutdown_data->task_stop_waiting) {
 ast_cond_wait(&shutdown_data->in, &shutdown_data->lock);
 }
 shutdown_data->task_complete = 1;
 ast_cond_signal(&shutdown_data->out);
 return 0;
}

static int shutdown_waitfor_completion(struct shutdown_data *shutdown_data)
{
 struct timeval start = ast_tvnow();
 struct timespec end = {
 .tv_sec = start.tv_sec + 5,
 .tv_nsec = start.tv_usec * 1000
 };
 SCOPED_MUTEX(lock, &shutdown_data->lock);

 while (!shutdown_data->task_complete) {
 if (ast_cond_timedwait(&shutdown_data->out, &shutdown_data->lock, &end) == ETIMEDOUT) {
 break;
 }
 }

 return shutdown_data->task_complete;
}

static int shutdown_has_completed(struct shutdown_data *shutdown_data)
{
 SCOPED_MUTEX(lock, &shutdown_data->lock);
 return shutdown_data->task_complete;
}

static int shutdown_waitfor_start(struct shutdown_data *shutdown_data)
{
 struct timeval start = ast_tvnow();
 struct timespec end = {
 .tv_sec = start.tv_sec + 5,
 .tv_nsec = start.tv_usec * 1000
 };
 SCOPED_MUTEX(lock, &shutdown_data->lock);

 while (!shutdown_data->task_started) {
 if (ast_cond_timedwait(&shutdown_data->out, &shutdown_data->lock, &end) == ETIMEDOUT) {
 break;
 }
 }

 return shutdown_data->task_started;
}

static void shutdown_poke(struct shutdown_data *shutdown_data)
{
 SCOPED_MUTEX(lock, &shutdown_data->lock);
 shutdown_data->task_stop_waiting = 1;
 ast_cond_signal(&shutdown_data->in);
}

static void *tps_shutdown_thread(void *data)
{
 struct ast_taskprocessor *tps = data;
 ast_taskprocessor_unreference(tps);
 return NULL;
}

AST_TEST_DEFINE(taskprocessor_shutdown)
{
 RAII_VAR(struct ast_taskprocessor *, tps, NULL, ast_taskprocessor_unreference);
 RAII_VAR(struct shutdown_data *, task1, NULL, ao2_cleanup);
 RAII_VAR(struct shutdown_data *, task2, NULL, ao2_cleanup);
 int push_res;
 int wait_res;
 int pthread_res;
 pthread_t shutdown_thread;

 switch (cmd) {
 case TEST_INIT:
 info->name = "taskprocessor_shutdown";
 info->category = "/main/taskprocessor/";
 info->summary = "Test of taskproccesor shutdown sequence";
 info->description =
 "Ensures that all tasks run to completion after the taskprocessor has been unref'ed.";
 return AST_TEST_NOT_RUN;
 case TEST_EXECUTE:
 break;
 }

 tps = ast_taskprocessor_get("test_shutdown", TPS_REF_DEFAULT);
 task1 = shutdown_data_create(0); /* task1 waits to be poked */
 task2 = shutdown_data_create(1); /* task2 waits for nothing */

 if (!tps || !task1 || !task2) {
 ast_test_status_update(test, "Allocation error\n");
 return AST_TEST_FAIL;
 }

 push_res = ast_taskprocessor_push(tps, shutdown_task_exec, task1);
 if (push_res != 0) {
 ast_test_status_update(test, "Could not push task1\n");
 return AST_TEST_FAIL;
 }

 push_res = ast_taskprocessor_push(tps, shutdown_task_exec, task2);
 if (push_res != 0) {
 ast_test_status_update(test, "Could not push task2\n");
 return AST_TEST_FAIL;
 }

 wait_res = shutdown_waitfor_start(task1);
 if (!wait_res) {
 ast_test_status_update(test, "Task1 didn't start\n");
 return AST_TEST_FAIL;
 }

 pthread_res = ast_pthread_create(&shutdown_thread, NULL, tps_shutdown_thread, tps);
 if (pthread_res != 0) {
 ast_test_status_update(test, "Failed to create shutdown thread\n");
 return AST_TEST_FAIL;
 }
 tps = NULL;

 /* Wakeup task1; it should complete */
 shutdown_poke(task1);
 wait_res = shutdown_waitfor_completion(task1);
 if (!wait_res) {
 ast_test_status_update(test, "Task1 didn't complete\n");
 return AST_TEST_FAIL;
 }

 /* Wait for shutdown to complete */
 pthread_join(shutdown_thread, NULL);

 /* Should have also completed task2 */
 wait_res = shutdown_has_completed(task2);
 if (!wait_res) {
 ast_test_status_update(test, "Task2 didn't finish\n");
 return AST_TEST_FAIL;
 }

 return AST_TEST_PASS;
}

static int local_task_exe(struct ast_taskprocessor_local *local)
{
 int *local_data = local->local_data;
 struct task_data *task_data = local->data;

 *local_data = 1;
 task(task_data);

 return 0;
}

AST_TEST_DEFINE(taskprocessor_push_local)
{
 RAII_VAR(struct ast_taskprocessor *, tps, NULL,
 ast_taskprocessor_unreference);
 RAII_VAR(struct task_data *, task_data, NULL, ao2_cleanup);
 int local_data;
 int res;

 switch (cmd) {
 case TEST_INIT:
 info->name = __func__;
 info->category = "/main/taskprocessor/";
 info->summary = "Test of pushing local data";
 info->description =
 "Ensures that local data is passed along.";
 return AST_TEST_NOT_RUN;
 case TEST_EXECUTE:
 break;
 }


 tps = ast_taskprocessor_get("test", TPS_REF_DEFAULT);
 if (!tps) {
 ast_test_status_update(test, "Unable to create test taskprocessor\n");
 return AST_TEST_FAIL;
 }


 task_data = task_data_create();
 if (!task_data) {
 ast_test_status_update(test, "Unable to create task_data\n");
 return AST_TEST_FAIL;
 }

 local_data = 0;
 ast_taskprocessor_set_local(tps, &local_data);

 if (ast_taskprocessor_push_local(tps, local_task_exe, task_data)) {
 ast_test_status_update(test, "Failed to queue task\n");
 return AST_TEST_FAIL;
 }

 res = task_wait(task_data);
 if (res != 0) {
 ast_test_status_update(test, "Queued task did not execute!\n");
 return AST_TEST_FAIL;
 }

 if (local_data != 1) {
 ast_test_status_update(test,
 "Queued task did not set local_data!\n");
 return AST_TEST_FAIL;
 }

 return AST_TEST_PASS;
}

/*!
 * \brief Baseline test for a serializer pool
 *
 * This test ensures that when a task is added to a taskprocessor that
 * has been allocated with a default listener that the task gets executed
 * as expected
 */
AST_TEST_DEFINE(serializer_pool)
{
 RAII_VAR(struct ast_threadpool *, threadpool, NULL, ast_threadpool_shutdown);
 RAII_VAR(struct ast_serializer_pool *, serializer_pool, NULL, ast_serializer_pool_destroy);
 RAII_VAR(struct task_data *, task_data, NULL, ao2_cleanup);
 struct ast_threadpool_options options = {
 .version = AST_THREADPOOL_OPTIONS_VERSION,
 .idle_timeout = 0,
 .auto_increment = 0,
 .initial_size = 1,
 .max_size = 0,
 };
 /* struct ast_taskprocessor *tps; */

 switch (cmd) {
 case TEST_INIT:
 info->name = "serializer_pool";
 info->category = "/main/taskprocessor/";
 info->summary = "Test using a serializer pool";
 info->description =
 "Ensures that a queued task gets executed.";
 return AST_TEST_NOT_RUN;
 case TEST_EXECUTE:
 break;
 }

 ast_test_validate(test, threadpool = ast_threadpool_create("test", NULL, &options));
 ast_test_validate(test, serializer_pool = ast_serializer_pool_create(
 "test/test", 5, threadpool, 2)); /* 2 second shutdown group time out */
 ast_test_validate(test, !strcmp(ast_serializer_pool_name(serializer_pool), "test/test"));
 ast_test_validate(test, !ast_serializer_pool_set_alerts(serializer_pool, 5, 0));
 ast_test_validate(test, task_data = task_data_create());

 task_data->wait_time = 4000; /* task takes 4 seconds */
 ast_test_validate(test, !ast_taskprocessor_push(
 ast_serializer_pool_get(serializer_pool), task, task_data));

 if (!ast_serializer_pool_destroy(serializer_pool)) {
 ast_test_status_update(test, "Unexpected pool destruction!\n");
 /*
 * The pool should have timed out, so if it destruction reports success
 * we need to fail.
 */
 serializer_pool = NULL;
 return AST_TEST_FAIL;
 }

 ast_test_validate(test, !task_wait(task_data));

 /* The first attempt should have failed. Second try should destroy successfully */
 if (ast_serializer_pool_destroy(serializer_pool)) {
 ast_test_status_update(test, "Unable to destroy serializer pool in allotted time!\n");
 /*
 * If this fails we'll try again on return to hopefully avoid a memory leak.
 * If it again times out a third time, well not much we can do.
 */
 return AST_TEST_FAIL;
 }

 /* Test passed, so set pool to NULL to avoid "re-running" destroy */
 serializer_pool = NULL;

 return AST_TEST_PASS;
}

static int unload_module(void)
{
 ast_test_unregister(default_taskprocessor);
 ast_test_unregister(default_taskprocessor_load);
 ast_test_unregister(subsystem_alert);
 ast_test_unregister(taskprocessor_listener);
 ast_test_unregister(taskprocessor_shutdown);
 ast_test_unregister(taskprocessor_push_local);
 ast_test_unregister(serializer_pool);
 return 0;
}

static int load_module(void)
{
 ast_test_register(default_taskprocessor);
 ast_test_register(default_taskprocessor_load);
 ast_test_register(subsystem_alert);
 ast_test_register(taskprocessor_listener);
 ast_test_register(taskprocessor_shutdown);
 ast_test_register(taskprocessor_push_local);
 ast_test_register(serializer_pool);
 return AST_MODULE_LOAD_SUCCESS;
}

AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "taskprocessor test module");