test_threadpool.c

Go to the documentation of this file.

/*
 * 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 threadpool unit tests
 *
 * \author Mark Michelson <[email protected]>
 *
 */

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

#include "asterisk.h"

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

struct test_listener_data {
   int num_active;
   int num_idle;
   int task_pushed;
   int num_tasks;
   int empty_notice;
   int was_empty;
   ast_mutex_t lock;
   ast_cond_t cond;
};

static struct test_listener_data *test_alloc(void)
{
   struct test_listener_data *tld = ast_calloc(1, sizeof(*tld));
   if (!tld) {
      return NULL;
   }
   ast_mutex_init(&tld->lock);
   ast_cond_init(&tld->cond, NULL);
   return tld;
}

static void test_state_changed(struct ast_threadpool *pool,
      struct ast_threadpool_listener *listener,
      int active_threads,
      int idle_threads)
{
   struct test_listener_data *tld = ast_threadpool_listener_get_user_data(listener);
   SCOPED_MUTEX(lock, &tld->lock);
   tld->num_active = active_threads;
   tld->num_idle = idle_threads;
   ast_log(LOG_NOTICE, "Thread state: %d active, %d idle\n", tld->num_active, tld->num_idle);
   ast_cond_signal(&tld->cond);
}

static void test_task_pushed(struct ast_threadpool *pool,
      struct ast_threadpool_listener *listener,
      int was_empty)
{
   struct test_listener_data *tld = ast_threadpool_listener_get_user_data(listener);
   SCOPED_MUTEX(lock, &tld->lock);
   tld->task_pushed = 1;
   ++tld->num_tasks;
   tld->was_empty = was_empty;
   ast_cond_signal(&tld->cond);
}

static void test_emptied(struct ast_threadpool *pool,
      struct ast_threadpool_listener *listener)
{
   struct test_listener_data *tld = ast_threadpool_listener_get_user_data(listener);
   SCOPED_MUTEX(lock, &tld->lock);
   tld->empty_notice = 1;
   ast_cond_signal(&tld->cond);
}

static void test_shutdown(struct ast_threadpool_listener *listener)
{
   struct test_listener_data *tld = ast_threadpool_listener_get_user_data(listener);
   ast_cond_destroy(&tld->cond);
   ast_mutex_destroy(&tld->lock);
}

static const struct ast_threadpool_listener_callbacks test_callbacks = {
   .state_changed = test_state_changed,
   .task_pushed = test_task_pushed,
   .emptied = test_emptied,
   .shutdown = test_shutdown,
};

struct simple_task_data {
   int task_executed;
   ast_mutex_t lock;
   ast_cond_t cond;
};

static struct simple_task_data *simple_task_data_alloc(void)
{
   struct simple_task_data *std = ast_calloc(1, sizeof(*std));

   if (!std) {
      return NULL;
   }
   ast_mutex_init(&std->lock);
   ast_cond_init(&std->cond, NULL);
   return std;
}

static void simple_task_data_free(struct simple_task_data *std)
{
   if (!std) {
      return;
   }

   ast_mutex_destroy(&std->lock);
   ast_cond_destroy(&std->cond);

   ast_free(std);
}

static int simple_task(void *data)
{
   struct simple_task_data *std = data;
   SCOPED_MUTEX(lock, &std->lock);
   std->task_executed = 1;
   ast_cond_signal(&std->cond);
   return 0;
}

static enum ast_test_result_state wait_until_thread_state(struct ast_test *test, struct test_listener_data *tld, int num_active, int num_idle)
{
   struct timeval start = ast_tvnow();
   struct timespec end = {
      .tv_sec = start.tv_sec + 5,
      .tv_nsec = start.tv_usec * 1000
   };
   enum ast_test_result_state res = AST_TEST_PASS;
   SCOPED_MUTEX(lock, &tld->lock);

   while (!(tld->num_active == num_active && tld->num_idle == num_idle)) {
      if (ast_cond_timedwait(&tld->cond, &tld->lock, &end) == ETIMEDOUT) {
         break;
      }
   }

   if (tld->num_active != num_active && tld->num_idle != num_idle) {
      ast_test_status_update(test, "Number of active threads and idle threads not what was expected.\n");
      ast_test_status_update(test, "Expected %d active threads but got %d\n", num_active, tld->num_active);
      ast_test_status_update(test, "Expected %d idle threads but got %d\n", num_idle, tld->num_idle);
      res = AST_TEST_FAIL;
   }

   return res;
}

static void wait_for_task_pushed(struct ast_threadpool_listener *listener)
{
   struct test_listener_data *tld = ast_threadpool_listener_get_user_data(listener);
   struct timeval start = ast_tvnow();
   struct timespec end = {
      .tv_sec = start.tv_sec + 5,
      .tv_nsec = start.tv_usec * 1000
   };
   SCOPED_MUTEX(lock, &tld->lock);

   while (!tld->task_pushed) {
      if (ast_cond_timedwait(&tld->cond, lock, &end) == ETIMEDOUT) {
         break;
      }
   }
}

static enum ast_test_result_state wait_for_completion(struct ast_test *test, struct simple_task_data *std)
{
   struct timeval start = ast_tvnow();
   struct timespec end = {
      .tv_sec = start.tv_sec + 5,
      .tv_nsec = start.tv_usec * 1000
   };
   enum ast_test_result_state res = AST_TEST_PASS;
   SCOPED_MUTEX(lock, &std->lock);

   while (!std->task_executed) {
      if (ast_cond_timedwait(&std->cond, lock, &end) == ETIMEDOUT) {
         break;
      }
   }

   if (!std->task_executed) {
      ast_test_status_update(test, "Task execution did not occur\n");
      res = AST_TEST_FAIL;
   }
   return res;
}

static enum ast_test_result_state wait_for_empty_notice(struct ast_test *test, struct test_listener_data *tld)
{
   struct timeval start = ast_tvnow();
   struct timespec end = {
      .tv_sec = start.tv_sec + 5,
      .tv_nsec = start.tv_usec * 1000
   };
   enum ast_test_result_state res = AST_TEST_PASS;
   SCOPED_MUTEX(lock, &tld->lock);

   while (!tld->empty_notice) {
      if (ast_cond_timedwait(&tld->cond, lock, &end) == ETIMEDOUT) {
         break;
      }
   }

   if (!tld->empty_notice) {
      ast_test_status_update(test, "Test listener not notified that threadpool is empty\n");
      res = AST_TEST_FAIL;
   }

   return res;
}

static enum ast_test_result_state listener_check(
      struct ast_test *test,
      struct ast_threadpool_listener *listener,
      int task_pushed,
      int was_empty,
      int num_tasks,
      int num_active,
      int num_idle,
      int empty_notice)
{
   struct test_listener_data *tld = ast_threadpool_listener_get_user_data(listener);
   enum ast_test_result_state res = AST_TEST_PASS;

   if (tld->task_pushed != task_pushed) {
      ast_test_status_update(test, "Expected task %sto be pushed, but it was%s\n",
            task_pushed ? "" : "not ", tld->task_pushed ? "" : " not");
      res = AST_TEST_FAIL;
   }
   if (tld->was_empty != was_empty) {
      ast_test_status_update(test, "Expected %sto be empty, but it was%s\n",
            was_empty ? "" : "not ", tld->was_empty ? "" : " not");
      res = AST_TEST_FAIL;
   }
   if (tld->num_tasks!= num_tasks) {
      ast_test_status_update(test, "Expected %d tasks to be pushed, but got %d\n",
            num_tasks, tld->num_tasks);
      res = AST_TEST_FAIL;
   }
   if (tld->num_active != num_active) {
      ast_test_status_update(test, "Expected %d active threads, but got %d\n",
            num_active, tld->num_active);
      res = AST_TEST_FAIL;
   }
   if (tld->num_idle != num_idle) {
      ast_test_status_update(test, "Expected %d idle threads, but got %d\n",
            num_idle, tld->num_idle);
      res = AST_TEST_FAIL;
   }
   if (tld->empty_notice != empty_notice) {
      ast_test_status_update(test, "Expected %s empty notice, but got %s\n",
            was_empty ? "an" : "no", tld->task_pushed ? "one" : "none");
      res = AST_TEST_FAIL;
   }

   return res;
}

AST_TEST_DEFINE(threadpool_push)
{
   struct ast_threadpool *pool = NULL;
   struct ast_threadpool_listener *listener = NULL;
   struct simple_task_data *std = NULL;
   struct test_listener_data *tld = NULL;
   enum ast_test_result_state res = AST_TEST_FAIL;
   struct ast_threadpool_options options = {
      .version = AST_THREADPOOL_OPTIONS_VERSION,
      .idle_timeout = 0,
      .auto_increment = 0,
      .initial_size = 0,
      .max_size = 0,
   };

   switch (cmd) {
   case TEST_INIT:
      info->name = "push";
      info->category = "/main/threadpool/";
      info->summary = "Test task";
      info->description =
         "Basic threadpool test";
      return AST_TEST_NOT_RUN;
   case TEST_EXECUTE:
      break;
   }
   tld = test_alloc();
   if (!tld) {
      return AST_TEST_FAIL;
   }

   listener = ast_threadpool_listener_alloc(&test_callbacks, tld);
   if (!listener) {
      goto end;
   }

   pool = ast_threadpool_create(info->name, listener, &options);
   if (!pool) {
      goto end;
   }

   std = simple_task_data_alloc();
   if (!std) {
      goto end;
   }

   if (ast_threadpool_push(pool, simple_task, std)) {
      goto end;
   }

   wait_for_task_pushed(listener);

   res = listener_check(test, listener, 1, 1, 1, 0, 0, 0);

end:
   ast_threadpool_shutdown(pool);
   ao2_cleanup(listener);
   simple_task_data_free(std);
   ast_free(tld);
   return res;
}

AST_TEST_DEFINE(threadpool_initial_threads)
{
   struct ast_threadpool *pool = NULL;
   struct ast_threadpool_listener *listener = NULL;
   enum ast_test_result_state res = AST_TEST_FAIL;
   struct test_listener_data *tld = NULL;
   struct ast_threadpool_options options = {
      .version = AST_THREADPOOL_OPTIONS_VERSION,
      .idle_timeout = 0,
      .auto_increment = 0,
      .initial_size = 3,
      .max_size = 0,
   };

   switch (cmd) {
   case TEST_INIT:
      info->name = "initial_threads";
      info->category = "/main/threadpool/";
      info->summary = "Test threadpool initialization state";
      info->description =
         "Ensure that a threadpool created with a specific size contains the\n"
         "proper number of idle threads.";
      return AST_TEST_NOT_RUN;
   case TEST_EXECUTE:
      break;
   }

   tld = test_alloc();
   if (!tld) {
      return AST_TEST_FAIL;
   }

   listener = ast_threadpool_listener_alloc(&test_callbacks, tld);
   if (!listener) {
      goto end;
   }

   pool = ast_threadpool_create(info->name, listener, &options);
   if (!pool) {
      goto end;
   }

   res = wait_until_thread_state(test, tld, 0, 3);

end:
   ast_threadpool_shutdown(pool);
   ao2_cleanup(listener);
   ast_free(tld);
   return res;
}


AST_TEST_DEFINE(threadpool_thread_creation)
{
   struct ast_threadpool *pool = NULL;
   struct ast_threadpool_listener *listener = NULL;
   enum ast_test_result_state res = AST_TEST_FAIL;
   struct test_listener_data *tld = NULL;
   struct ast_threadpool_options options = {
      .version = AST_THREADPOOL_OPTIONS_VERSION,
      .idle_timeout = 0,
      .auto_increment = 0,
      .initial_size = 0,
      .max_size = 0,
   };

   switch (cmd) {
   case TEST_INIT:
      info->name = "thread_creation";
      info->category = "/main/threadpool/";
      info->summary = "Test threadpool thread creation";
      info->description =
         "Ensure that threads can be added to a threadpool";
      return AST_TEST_NOT_RUN;
   case TEST_EXECUTE:
      break;
   }

   tld = test_alloc();
   if (!tld) {
      return AST_TEST_FAIL;
   }

   listener = ast_threadpool_listener_alloc(&test_callbacks, tld);
   if (!listener) {
      goto end;
   }

   pool = ast_threadpool_create(info->name, listener, &options);
   if (!pool) {
      goto end;
   }

   /* Now let's create a thread. It should start active, then go
    * idle immediately
    */
   ast_threadpool_set_size(pool, 1);

   res = wait_until_thread_state(test, tld, 0, 1);

end:
   ast_threadpool_shutdown(pool);
   ao2_cleanup(listener);
   ast_free(tld);
   return res;
}

AST_TEST_DEFINE(threadpool_thread_destruction)
{
   struct ast_threadpool *pool = NULL;
   struct ast_threadpool_listener *listener = NULL;
   enum ast_test_result_state res = AST_TEST_FAIL;
   struct test_listener_data *tld = NULL;
   struct ast_threadpool_options options = {
      .version = AST_THREADPOOL_OPTIONS_VERSION,
      .idle_timeout = 0,
      .auto_increment = 0,
      .initial_size = 0,
      .max_size = 0,
   };

   switch (cmd) {
   case TEST_INIT:
      info->name = "thread_destruction";
      info->category = "/main/threadpool/";
      info->summary = "Test threadpool thread destruction";
      info->description =
         "Ensure that threads are properly destroyed in a threadpool";
      return AST_TEST_NOT_RUN;
   case TEST_EXECUTE:
      break;
   }

   tld = test_alloc();
   if (!tld) {
      return AST_TEST_FAIL;
   }

   listener = ast_threadpool_listener_alloc(&test_callbacks, tld);
   if (!listener) {
      goto end;
   }

   pool = ast_threadpool_create(info->name, listener, &options);
   if (!pool) {
      goto end;
   }

   ast_threadpool_set_size(pool, 3);

   res = wait_until_thread_state(test, tld, 0, 3);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = listener_check(test, listener, 0, 0, 0, 0, 3, 0);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   ast_threadpool_set_size(pool, 2);

   res = wait_until_thread_state(test, tld, 0, 2);

end:
   ast_threadpool_shutdown(pool);
   ao2_cleanup(listener);
   ast_free(tld);
   return res;
}

AST_TEST_DEFINE(threadpool_thread_timeout)
{
   struct ast_threadpool *pool = NULL;
   struct ast_threadpool_listener *listener = NULL;
   enum ast_test_result_state res = AST_TEST_FAIL;
   struct test_listener_data *tld = NULL;
   struct ast_threadpool_options options = {
      .version = AST_THREADPOOL_OPTIONS_VERSION,
      .idle_timeout = 2,
      .auto_increment = 0,
      .initial_size = 0,
      .max_size = 0,
   };

   switch (cmd) {
   case TEST_INIT:
      info->name = "thread_timeout";
      info->category = "/main/threadpool/";
      info->summary = "Test threadpool thread timeout";
      info->description =
         "Ensure that a thread with a two second timeout dies as expected.";
      return AST_TEST_NOT_RUN;
   case TEST_EXECUTE:
      break;
   }

   tld = test_alloc();
   if (!tld) {
      return AST_TEST_FAIL;
   }

   listener = ast_threadpool_listener_alloc(&test_callbacks, tld);
   if (!listener) {
      goto end;
   }

   pool = ast_threadpool_create(info->name, listener, &options);
   if (!pool) {
      goto end;
   }

   ast_threadpool_set_size(pool, 1);

   res = wait_until_thread_state(test, tld, 0, 1);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = listener_check(test, listener, 0, 0, 0, 0, 1, 0);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = wait_until_thread_state(test, tld, 0, 0);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = listener_check(test, listener, 0, 0, 0, 0, 0, 0);

end:
   ast_threadpool_shutdown(pool);
   ao2_cleanup(listener);
   ast_free(tld);
   return res;
}

AST_TEST_DEFINE(threadpool_thread_timeout_thrash)
{
   struct ast_threadpool *pool = NULL;
   struct ast_threadpool_listener *listener = NULL;
   enum ast_test_result_state res = AST_TEST_FAIL;
   struct test_listener_data *tld = NULL;
   struct ast_threadpool_options options = {
      .version = AST_THREADPOOL_OPTIONS_VERSION,
      .idle_timeout = 1,
      .auto_increment = 1,
      .initial_size = 0,
      .max_size = 1,
   };
   int iteration;

   switch (cmd) {
   case TEST_INIT:
      info->name = "thread_timeout_thrash";
      info->category = "/main/threadpool/";
      info->summary = "Thrash threadpool thread timeout";
      info->description =
         "Repeatedly queue a task when a threadpool thread should timeout.";
      return AST_TEST_NOT_RUN;
   case TEST_EXECUTE:
      break;
   }

   tld = test_alloc();
   if (!tld) {
      return AST_TEST_FAIL;
   }

   listener = ast_threadpool_listener_alloc(&test_callbacks, tld);
   if (!listener) {
      goto end;
   }

   pool = ast_threadpool_create(info->name, listener, &options);
   if (!pool) {
      goto end;
   }

   ast_threadpool_set_size(pool, 1);

   for (iteration = 0; iteration < 30; ++iteration) {
      struct simple_task_data *std = NULL;
      struct timeval start = ast_tvnow();
      struct timespec end = {
         .tv_sec = start.tv_sec + options.idle_timeout,
         .tv_nsec = start.tv_usec * 1000
      };

      std = simple_task_data_alloc();
      if (!std) {
         goto end;
      }

      /* Wait until the threadpool thread should timeout due to being idle */
      ast_mutex_lock(&tld->lock);
      while (ast_cond_timedwait(&tld->cond, &tld->lock, &end) != ETIMEDOUT) {
         /* This purposely left empty as we want to loop waiting for a time out */
      }
      ast_mutex_unlock(&tld->lock);

      if (ast_threadpool_push(pool, simple_task, std)) {
         res = AST_TEST_FAIL;
      } else {
         res = wait_for_completion(test, std);
      }

      simple_task_data_free(std);

      if (res == AST_TEST_FAIL) {
         goto end;
      }
   }

   res = wait_until_thread_state(test, tld, 0, 0);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = listener_check(test, listener, 1, 1, 30, 0, 0, 1);

end:
   ast_threadpool_shutdown(pool);
   ao2_cleanup(listener);
   ast_free(tld);
   return res;
}

AST_TEST_DEFINE(threadpool_one_task_one_thread)
{
   struct ast_threadpool *pool = NULL;
   struct ast_threadpool_listener *listener = NULL;
   struct simple_task_data *std = NULL;
   enum ast_test_result_state res = AST_TEST_FAIL;
   struct test_listener_data *tld = NULL;
   struct ast_threadpool_options options = {
      .version = AST_THREADPOOL_OPTIONS_VERSION,
      .idle_timeout = 0,
      .auto_increment = 0,
      .initial_size = 0,
      .max_size = 0,
   };

   switch (cmd) {
   case TEST_INIT:
      info->name = "one_task_one_thread";
      info->category = "/main/threadpool/";
      info->summary = "Test a single task with a single thread";
      info->description =
         "Push a task into an empty threadpool, then add a thread to the pool.";
      return AST_TEST_NOT_RUN;
   case TEST_EXECUTE:
      break;
   }

   tld = test_alloc();
   if (!tld) {
      return AST_TEST_FAIL;
   }

   listener = ast_threadpool_listener_alloc(&test_callbacks, tld);
   if (!listener) {
      goto end;
   }

   pool = ast_threadpool_create(info->name, listener, &options);
   if (!pool) {
      goto end;
   }

   std = simple_task_data_alloc();
   if (!std) {
      goto end;
   }

   if (ast_threadpool_push(pool, simple_task, std)) {
      goto end;
   }

   ast_threadpool_set_size(pool, 1);

   /* Threads added to the pool are active when they start,
    * so the newly-created thread should immediately execute
    * the waiting task.
    */
   res = wait_for_completion(test, std);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = wait_for_empty_notice(test, tld);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   /* After completing the task, the thread should go idle */
   res = wait_until_thread_state(test, tld, 0, 1);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = listener_check(test, listener, 1, 1, 1, 0, 1, 1);

end:
   ast_threadpool_shutdown(pool);
   ao2_cleanup(listener);
   simple_task_data_free(std);
   ast_free(tld);
   return res;

}

AST_TEST_DEFINE(threadpool_one_thread_one_task)
{
   struct ast_threadpool *pool = NULL;
   struct ast_threadpool_listener *listener = NULL;
   struct simple_task_data *std = NULL;
   enum ast_test_result_state res = AST_TEST_FAIL;
   struct test_listener_data *tld = NULL;
   struct ast_threadpool_options options = {
      .version = AST_THREADPOOL_OPTIONS_VERSION,
      .idle_timeout = 0,
      .auto_increment = 0,
      .initial_size = 0,
      .max_size = 0,
   };

   switch (cmd) {
   case TEST_INIT:
      info->name = "one_thread_one_task";
      info->category = "/main/threadpool/";
      info->summary = "Test a single thread with a single task";
      info->description =
         "Add a thread to the pool and then push a task to it.";
      return AST_TEST_NOT_RUN;
   case TEST_EXECUTE:
      break;
   }

   tld = test_alloc();
   if (!tld) {
      return AST_TEST_FAIL;
   }

   listener = ast_threadpool_listener_alloc(&test_callbacks, tld);
   if (!listener) {
      goto end;
   }

   pool = ast_threadpool_create(info->name, listener, &options);
   if (!pool) {
      goto end;
   }

   std = simple_task_data_alloc();
   if (!std) {
      goto end;
   }

   ast_threadpool_set_size(pool, 1);

   res = wait_until_thread_state(test, tld, 0, 1);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   if (ast_threadpool_push(pool, simple_task, std)) {
      res = AST_TEST_FAIL;
      goto end;
   }

   res = wait_for_completion(test, std);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = wait_for_empty_notice(test, tld);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   /* After completing the task, the thread should go idle */
   res = wait_until_thread_state(test, tld, 0, 1);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = listener_check(test, listener, 1, 1, 1, 0, 1, 1);

end:
   ast_threadpool_shutdown(pool);
   ao2_cleanup(listener);
   simple_task_data_free(std);
   ast_free(tld);
   return res;
}

AST_TEST_DEFINE(threadpool_one_thread_multiple_tasks)
{
   struct ast_threadpool *pool = NULL;
   struct ast_threadpool_listener *listener = NULL;
   struct simple_task_data *std1 = NULL;
   struct simple_task_data *std2 = NULL;
   struct simple_task_data *std3 = NULL;
   enum ast_test_result_state res = AST_TEST_FAIL;
   struct test_listener_data *tld = NULL;
   struct ast_threadpool_options options = {
      .version = AST_THREADPOOL_OPTIONS_VERSION,
      .idle_timeout = 0,
      .auto_increment = 0,
      .initial_size = 0,
      .max_size = 0,
   };

   switch (cmd) {
   case TEST_INIT:
      info->name = "one_thread_multiple_tasks";
      info->category = "/main/threadpool/";
      info->summary = "Test a single thread with multiple tasks";
      info->description =
         "Add a thread to the pool and then push three tasks to it.";
      return AST_TEST_NOT_RUN;
   case TEST_EXECUTE:
      break;
   }

   tld = test_alloc();
   if (!tld) {
      return AST_TEST_FAIL;
   }

   listener = ast_threadpool_listener_alloc(&test_callbacks, tld);
   if (!listener) {
      goto end;
   }

   pool = ast_threadpool_create(info->name, listener, &options);
   if (!pool) {
      goto end;
   }

   std1 = simple_task_data_alloc();
   std2 = simple_task_data_alloc();
   std3 = simple_task_data_alloc();
   if (!std1 || !std2 || !std3) {
      goto end;
   }

   ast_threadpool_set_size(pool, 1);

   res = wait_until_thread_state(test, tld, 0, 1);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = AST_TEST_FAIL;
   if (ast_threadpool_push(pool, simple_task, std1)) {
      goto end;
   }

   if (ast_threadpool_push(pool, simple_task, std2)) {
      goto end;
   }

   if (ast_threadpool_push(pool, simple_task, std3)) {
      goto end;
   }

   res = wait_for_completion(test, std1);
   if (res == AST_TEST_FAIL) {
      goto end;
   }
   res = wait_for_completion(test, std2);
   if (res == AST_TEST_FAIL) {
      goto end;
   }
   res = wait_for_completion(test, std3);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = wait_for_empty_notice(test, tld);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = wait_until_thread_state(test, tld, 0, 1);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = listener_check(test, listener, 1, 0, 3, 0, 1, 1);

end:
   ast_threadpool_shutdown(pool);
   ao2_cleanup(listener);
   simple_task_data_free(std1);
   simple_task_data_free(std2);
   simple_task_data_free(std3);
   ast_free(tld);
   return res;
}

static enum ast_test_result_state wait_until_thread_state_task_pushed(struct ast_test *test,
      struct test_listener_data *tld, int num_active, int num_idle, int num_tasks)
{
   enum ast_test_result_state res = AST_TEST_PASS;
   struct timeval start;
   struct timespec end;

   res = wait_until_thread_state(test, tld, num_active, num_idle);
   if (res == AST_TEST_FAIL) {
      return res;
   }

   start = ast_tvnow();
   end.tv_sec = start.tv_sec + 5;
   end.tv_nsec = start.tv_usec * 1000;

   ast_mutex_lock(&tld->lock);

   while (tld->num_tasks != num_tasks) {
      if (ast_cond_timedwait(&tld->cond, &tld->lock, &end) == ETIMEDOUT) {
         break;
      }
   }

   if (tld->num_tasks != num_tasks) {
      ast_test_status_update(test, "Number of tasks pushed %d does not match expected %d\n",
            tld->num_tasks, num_tasks);
      res = AST_TEST_FAIL;
   }

   ast_mutex_unlock(&tld->lock);

   return res;
}

AST_TEST_DEFINE(threadpool_auto_increment)
{
   struct ast_threadpool *pool = NULL;
   struct ast_threadpool_listener *listener = NULL;
   struct simple_task_data *std1 = NULL;
   struct simple_task_data *std2 = NULL;
   struct simple_task_data *std3 = NULL;
   struct simple_task_data *std4 = NULL;
   enum ast_test_result_state res = AST_TEST_FAIL;
   struct test_listener_data *tld = NULL;
   struct ast_threadpool_options options = {
      .version = AST_THREADPOOL_OPTIONS_VERSION,
      .idle_timeout = 0,
      .auto_increment = 3,
      .initial_size = 0,
      .max_size = 0,
   };

   switch (cmd) {
   case TEST_INIT:
      info->name = "auto_increment";
      info->category = "/main/threadpool/";
      info->summary = "Test that the threadpool grows as tasks are added";
      info->description =
         "Create an empty threadpool and push a task to it. Once the task is\n"
         "pushed, the threadpool should add three threads and be able to\n"
         "handle the task. The threads should then go idle";
      return AST_TEST_NOT_RUN;
   case TEST_EXECUTE:
      break;
   }

   tld = test_alloc();
   if (!tld) {
      return AST_TEST_FAIL;
   }

   listener = ast_threadpool_listener_alloc(&test_callbacks, tld);
   if (!listener) {
      goto end;
   }

   pool = ast_threadpool_create(info->name, listener, &options);
   if (!pool) {
      goto end;
   }

   std1 = simple_task_data_alloc();
   std2 = simple_task_data_alloc();
   std3 = simple_task_data_alloc();
   std4 = simple_task_data_alloc();
   if (!std1 || !std2 || !std3 || !std4) {
      goto end;
   }

   if (ast_threadpool_push(pool, simple_task, std1)) {
      goto end;
   }

   /* Pushing the task should result in the threadpool growing
    * by three threads. This will allow the task to actually execute
    */
   res = wait_for_completion(test, std1);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = wait_for_empty_notice(test, tld);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = wait_until_thread_state(test, tld, 0, 3);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   /* Now push three tasks into the pool and ensure the pool does not
    * grow.
    */
   res = AST_TEST_FAIL;

   if (ast_threadpool_push(pool, simple_task, std2)) {
      goto end;
   }

   if (ast_threadpool_push(pool, simple_task, std3)) {
      goto end;
   }

   if (ast_threadpool_push(pool, simple_task, std4)) {
      goto end;
   }

   res = wait_for_completion(test, std2);
   if (res == AST_TEST_FAIL) {
      goto end;
   }
   res = wait_for_completion(test, std3);
   if (res == AST_TEST_FAIL) {
      goto end;
   }
   res = wait_for_completion(test, std4);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = wait_for_empty_notice(test, tld);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = wait_until_thread_state_task_pushed(test, tld, 0, 3, 4);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

end:
   ast_threadpool_shutdown(pool);
   ao2_cleanup(listener);
   simple_task_data_free(std1);
   simple_task_data_free(std2);
   simple_task_data_free(std3);
   simple_task_data_free(std4);
   ast_free(tld);
   return res;
}

AST_TEST_DEFINE(threadpool_max_size)
{
   struct ast_threadpool *pool = NULL;
   struct ast_threadpool_listener *listener = NULL;
   struct simple_task_data *std = NULL;
   enum ast_test_result_state res = AST_TEST_FAIL;
   struct test_listener_data *tld = NULL;
   struct ast_threadpool_options options = {
      .version = AST_THREADPOOL_OPTIONS_VERSION,
      .idle_timeout = 0,
      .auto_increment = 3,
      .initial_size = 0,
      .max_size = 2,
   };

   switch (cmd) {
   case TEST_INIT:
      info->name = "max_size";
      info->category = "/main/threadpool/";
      info->summary = "Test that the threadpool does not exceed its maximum size restriction";
      info->description =
         "Create an empty threadpool and push a task to it. Once the task is\n"
         "pushed, the threadpool should attempt to grow by three threads, but the\n"
         "pool's restrictions should only allow two threads to be added.";
      return AST_TEST_NOT_RUN;
   case TEST_EXECUTE:
      break;
   }

   tld = test_alloc();
   if (!tld) {
      return AST_TEST_FAIL;
   }

   listener = ast_threadpool_listener_alloc(&test_callbacks, tld);
   if (!listener) {
      goto end;
   }

   pool = ast_threadpool_create(info->name, listener, &options);
   if (!pool) {
      goto end;
   }

   std = simple_task_data_alloc();
   if (!std) {
      goto end;
   }

   if (ast_threadpool_push(pool, simple_task, std)) {
      goto end;
   }

   res = wait_for_completion(test, std);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = wait_until_thread_state(test, tld, 0, 2);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = listener_check(test, listener, 1, 1, 1, 0, 2, 1);
end:
   ast_threadpool_shutdown(pool);
   ao2_cleanup(listener);
   simple_task_data_free(std);
   ast_free(tld);
   return res;
}

AST_TEST_DEFINE(threadpool_reactivation)
{
   struct ast_threadpool *pool = NULL;
   struct ast_threadpool_listener *listener = NULL;
   struct simple_task_data *std1 = NULL;
   struct simple_task_data *std2 = NULL;
   enum ast_test_result_state res = AST_TEST_FAIL;
   struct test_listener_data *tld = NULL;
   struct ast_threadpool_options options = {
      .version = AST_THREADPOOL_OPTIONS_VERSION,
      .idle_timeout = 0,
      .auto_increment = 0,
      .initial_size = 0,
      .max_size = 0,
   };

   switch (cmd) {
   case TEST_INIT:
      info->name = "reactivation";
      info->category = "/main/threadpool/";
      info->summary = "Test that a threadpool reactivates when work is added";
      info->description =
         "Push a task into a threadpool. Make sure the task executes and the\n"
         "thread goes idle. Then push a second task and ensure that the thread\n"
         "awakens and executes the second task.";
      return AST_TEST_NOT_RUN;
   case TEST_EXECUTE:
      break;
   }

   tld = test_alloc();
   if (!tld) {
      return AST_TEST_FAIL;
   }

   listener = ast_threadpool_listener_alloc(&test_callbacks, tld);
   if (!listener) {
      goto end;
   }

   pool = ast_threadpool_create(info->name, listener, &options);
   if (!pool) {
      goto end;
   }

   std1 = simple_task_data_alloc();
   std2 = simple_task_data_alloc();
   if (!std1 || !std2) {
      goto end;
   }

   if (ast_threadpool_push(pool, simple_task, std1)) {
      goto end;
   }

   ast_threadpool_set_size(pool, 1);

   res = wait_for_completion(test, std1);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = wait_for_empty_notice(test, tld);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = wait_until_thread_state(test, tld, 0, 1);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = listener_check(test, listener, 1, 1, 1, 0, 1, 1);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   /* Now make sure the threadpool reactivates when we add a second task */
   if (ast_threadpool_push(pool, simple_task, std2)) {
      res = AST_TEST_FAIL;
      goto end;
   }

   res = wait_for_completion(test, std2);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = wait_for_empty_notice(test, tld);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = wait_until_thread_state(test, tld, 0, 1);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = listener_check(test, listener, 1, 1, 2, 0, 1, 1);

end:
   ast_threadpool_shutdown(pool);
   ao2_cleanup(listener);
   simple_task_data_free(std1);
   simple_task_data_free(std2);
   ast_free(tld);
   return res;

}

struct complex_task_data {
   int task_started;
   int task_executed;
   int continue_task;
   ast_mutex_t lock;
   ast_cond_t stall_cond;
   ast_cond_t notify_cond;
};

static struct complex_task_data *complex_task_data_alloc(void)
{
   struct complex_task_data *ctd = ast_calloc(1, sizeof(*ctd));

   if (!ctd) {
      return NULL;
   }
   ast_mutex_init(&ctd->lock);
   ast_cond_init(&ctd->stall_cond, NULL);
   ast_cond_init(&ctd->notify_cond, NULL);
   return ctd;
}

static void complex_task_data_free(struct complex_task_data *ctd)
{
   if (!ctd) {
      return;
   }

   ast_mutex_destroy(&ctd->lock);
   ast_cond_destroy(&ctd->stall_cond);
   ast_cond_destroy(&ctd->notify_cond);

   ast_free(ctd);
}

static int complex_task(void *data)
{
   struct complex_task_data *ctd = data;
   SCOPED_MUTEX(lock, &ctd->lock);
   /* Notify that we started */
   ctd->task_started = 1;
   ast_cond_signal(&ctd->notify_cond);
   while (!ctd->continue_task) {
      ast_cond_wait(&ctd->stall_cond, lock);
   }
   /* We got poked. Finish up */
   ctd->task_executed = 1;
   ast_cond_signal(&ctd->notify_cond);
   return 0;
}

static void poke_worker(struct complex_task_data *ctd)
{
   SCOPED_MUTEX(lock, &ctd->lock);
   ctd->continue_task = 1;
   ast_cond_signal(&ctd->stall_cond);
}

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

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

   return ctd->task_started;
}

static int has_complex_started(struct complex_task_data *ctd)
{
   struct timeval start = ast_tvnow();
   struct timespec end = {
      .tv_sec = start.tv_sec + 1,
      .tv_nsec = start.tv_usec * 1000
   };
   SCOPED_MUTEX(lock, &ctd->lock);

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

   return ctd->task_started;
}

static enum ast_test_result_state wait_for_complex_completion(struct complex_task_data *ctd)
{
   struct timeval start = ast_tvnow();
   struct timespec end = {
      .tv_sec = start.tv_sec + 5,
      .tv_nsec = start.tv_usec * 1000
   };
   enum ast_test_result_state res = AST_TEST_PASS;
   SCOPED_MUTEX(lock, &ctd->lock);

   while (!ctd->task_executed) {
      if (ast_cond_timedwait(&ctd->notify_cond, lock, &end) == ETIMEDOUT) {
         break;
      }
   }

   if (!ctd->task_executed) {
      res = AST_TEST_FAIL;
   }
   return res;
}

AST_TEST_DEFINE(threadpool_task_distribution)
{
   struct ast_threadpool *pool = NULL;
   struct ast_threadpool_listener *listener = NULL;
   struct complex_task_data *ctd1 = NULL;
   struct complex_task_data *ctd2 = NULL;
   enum ast_test_result_state res = AST_TEST_FAIL;
   struct test_listener_data *tld = NULL;
   struct ast_threadpool_options options = {
      .version = AST_THREADPOOL_OPTIONS_VERSION,
      .idle_timeout = 0,
      .auto_increment = 0,
      .initial_size = 0,
      .max_size = 0,
   };

   switch (cmd) {
   case TEST_INIT:
      info->name = "task_distribution";
      info->category = "/main/threadpool/";
      info->summary = "Test that tasks are evenly distributed to threads";
      info->description =
         "Push two tasks into a threadpool. Ensure that each is handled by\n"
         "a separate thread";
      return AST_TEST_NOT_RUN;
   case TEST_EXECUTE:
      break;
   }

   tld = test_alloc();
   if (!tld) {
      return AST_TEST_FAIL;
   }

   listener = ast_threadpool_listener_alloc(&test_callbacks, tld);
   if (!listener) {
      goto end;
   }

   pool = ast_threadpool_create(info->name, listener, &options);
   if (!pool) {
      goto end;
   }

   ctd1 = complex_task_data_alloc();
   ctd2 = complex_task_data_alloc();
   if (!ctd1 || !ctd2) {
      goto end;
   }

   if (ast_threadpool_push(pool, complex_task, ctd1)) {
      goto end;
   }

   if (ast_threadpool_push(pool, complex_task, ctd2)) {
      goto end;
   }

   ast_threadpool_set_size(pool, 2);

   res = wait_until_thread_state(test, tld, 2, 0);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = listener_check(test, listener, 1, 0, 2, 2, 0, 0);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   /* The tasks are stalled until we poke them */
   poke_worker(ctd1);
   poke_worker(ctd2);

   res = wait_for_complex_completion(ctd1);
   if (res == AST_TEST_FAIL) {
      goto end;
   }
   res = wait_for_complex_completion(ctd2);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = wait_until_thread_state(test, tld, 0, 2);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = listener_check(test, listener, 1, 0, 2, 0, 2, 1);

end:
   ast_threadpool_shutdown(pool);
   ao2_cleanup(listener);
   complex_task_data_free(ctd1);
   complex_task_data_free(ctd2);
   ast_free(tld);
   return res;
}

AST_TEST_DEFINE(threadpool_more_destruction)
{
   struct ast_threadpool *pool = NULL;
   struct ast_threadpool_listener *listener = NULL;
   struct complex_task_data *ctd1 = NULL;
   struct complex_task_data *ctd2 = NULL;
   enum ast_test_result_state res = AST_TEST_FAIL;
   struct test_listener_data *tld = NULL;
   struct ast_threadpool_options options = {
      .version = AST_THREADPOOL_OPTIONS_VERSION,
      .idle_timeout = 0,
      .auto_increment = 0,
      .initial_size = 0,
      .max_size = 0,
   };

   switch (cmd) {
   case TEST_INIT:
      info->name = "more_destruction";
      info->category = "/main/threadpool/";
      info->summary = "Test that threads are destroyed as expected";
      info->description =
         "Push two tasks into a threadpool. Set the threadpool size to 4\n"
         "Ensure that there are 2 active and 2 idle threads. Then shrink the\n"
         "threadpool down to 1 thread. Ensure that the thread leftover is active\n"
         "and ensure that both tasks complete.";
      return AST_TEST_NOT_RUN;
   case TEST_EXECUTE:
      break;
   }

   tld = test_alloc();
   if (!tld) {
      return AST_TEST_FAIL;
   }

   listener = ast_threadpool_listener_alloc(&test_callbacks, tld);
   if (!listener) {
      goto end;
   }

   pool = ast_threadpool_create(info->name, listener, &options);
   if (!pool) {
      goto end;
   }

   ctd1 = complex_task_data_alloc();
   ctd2 = complex_task_data_alloc();
   if (!ctd1 || !ctd2) {
      goto end;
   }

   if (ast_threadpool_push(pool, complex_task, ctd1)) {
      goto end;
   }

   if (ast_threadpool_push(pool, complex_task, ctd2)) {
      goto end;
   }

   ast_threadpool_set_size(pool, 4);

   res = wait_until_thread_state(test, tld, 2, 2);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = listener_check(test, listener, 1, 0, 2, 2, 2, 0);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   ast_threadpool_set_size(pool, 1);

   /* Shrinking the threadpool should kill off the two idle threads
    * and one of the active threads.
    */
   res = wait_until_thread_state(test, tld, 1, 0);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = listener_check(test, listener, 1, 0, 2, 1, 0, 0);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   /* The tasks are stalled until we poke them */
   poke_worker(ctd1);
   poke_worker(ctd2);

   res = wait_for_complex_completion(ctd1);
   if (res == AST_TEST_FAIL) {
      goto end;
   }
   res = wait_for_complex_completion(ctd2);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = wait_until_thread_state(test, tld, 0, 1);
   if (res == AST_TEST_FAIL) {
      goto end;
   }

   res = listener_check(test, listener, 1, 0, 2, 0, 1, 1);

end:
   ast_threadpool_shutdown(pool);
   ao2_cleanup(listener);
   complex_task_data_free(ctd1);
   complex_task_data_free(ctd2);
   ast_free(tld);
   return res;
}

AST_TEST_DEFINE(threadpool_serializer)
{
   int started = 0;
   int finished = 0;
   enum ast_test_result_state res = AST_TEST_FAIL;
   struct ast_threadpool *pool = NULL;
   struct ast_taskprocessor *uut = NULL;
   struct complex_task_data *data1 = NULL;
   struct complex_task_data *data2 = NULL;
   struct complex_task_data *data3 = NULL;
   struct ast_threadpool_options options = {
      .version = AST_THREADPOOL_OPTIONS_VERSION,
      .idle_timeout = 0,
      .auto_increment = 0,
      .initial_size = 2,
      .max_size = 0,
   };

   switch (cmd) {
   case TEST_INIT:
      info->name = "threadpool_serializer";
      info->category = "/main/threadpool/";
      info->summary = "Test that serializers";
      info->description =
         "Ensures that tasks enqueued to a serialize execute in sequence.";
      return AST_TEST_NOT_RUN;
   case TEST_EXECUTE:
      break;
   }

   pool = ast_threadpool_create("threadpool_serializer", NULL, &options);
   if (!pool) {
      ast_test_status_update(test, "Could not create threadpool\n");
      goto end;
   }
   uut = ast_threadpool_serializer("ser1", pool);
   data1 = complex_task_data_alloc();
   data2 = complex_task_data_alloc();
   data3 = complex_task_data_alloc();
   if (!uut || !data1 || !data2 || !data3) {
      ast_test_status_update(test, "Allocation failed\n");
      goto end;
   }

   /* This should start right away */
   if (ast_taskprocessor_push(uut, complex_task, data1)) {
      ast_test_status_update(test, "Failed to enqueue data1\n");
      goto end;
   }
   started = wait_for_complex_start(data1);
   if (!started) {
      ast_test_status_update(test, "Failed to start data1\n");
      goto end;
   }

   /* This should not start until data 1 is complete */
   if (ast_taskprocessor_push(uut, complex_task, data2)) {
      ast_test_status_update(test, "Failed to enqueue data2\n");
      goto end;
   }
   started = has_complex_started(data2);
   if (started) {
      ast_test_status_update(test, "data2 started out of order\n");
      goto end;
   }

   /* But the free thread in the pool can still run */
   if (ast_threadpool_push(pool, complex_task, data3)) {
      ast_test_status_update(test, "Failed to enqueue data3\n");
   }
   started = wait_for_complex_start(data3);
   if (!started) {
      ast_test_status_update(test, "Failed to start data3\n");
      goto end;
   }

   /* Finishing data1 should allow data2 to start */
   poke_worker(data1);
   finished = wait_for_complex_completion(data1) == AST_TEST_PASS;
   if (!finished) {
      ast_test_status_update(test, "data1 couldn't finish\n");
      goto end;
   }
   started = wait_for_complex_start(data2);
   if (!started) {
      ast_test_status_update(test, "Failed to start data2\n");
      goto end;
   }

   /* Finish up */
   poke_worker(data2);
   finished = wait_for_complex_completion(data2) == AST_TEST_PASS;
   if (!finished) {
      ast_test_status_update(test, "data2 couldn't finish\n");
      goto end;
   }
   poke_worker(data3);
   finished = wait_for_complex_completion(data3) == AST_TEST_PASS;
   if (!finished) {
      ast_test_status_update(test, "data3 couldn't finish\n");
      goto end;
   }

   res = AST_TEST_PASS;

end:
   poke_worker(data1);
   poke_worker(data2);
   poke_worker(data3);
   ast_taskprocessor_unreference(uut);
   ast_threadpool_shutdown(pool);
   complex_task_data_free(data1);
   complex_task_data_free(data2);
   complex_task_data_free(data3);
   return res;
}

AST_TEST_DEFINE(threadpool_serializer_dupe)
{
   enum ast_test_result_state res = AST_TEST_FAIL;
   struct ast_threadpool *pool = NULL;
   struct ast_taskprocessor *uut = NULL;
   struct ast_taskprocessor *there_can_be_only_one = NULL;
   struct ast_threadpool_options options = {
      .version = AST_THREADPOOL_OPTIONS_VERSION,
      .idle_timeout = 0,
      .auto_increment = 0,
      .initial_size = 2,
      .max_size = 0,
   };

   switch (cmd) {
   case TEST_INIT:
      info->name = "threadpool_serializer_dupe";
      info->category = "/main/threadpool/";
      info->summary = "Test that serializers are uniquely named";
      info->description =
         "Creating two serializers with the same name should\n"
         "result in error.";
      return AST_TEST_NOT_RUN;
   case TEST_EXECUTE:
      break;
   }

   pool = ast_threadpool_create("threadpool_serializer", NULL, &options);
   if (!pool) {
      ast_test_status_update(test, "Could not create threadpool\n");
      goto end;
   }

   uut = ast_threadpool_serializer("highlander", pool);
   if (!uut) {
      ast_test_status_update(test, "Allocation failed\n");
      goto end;
   }

   there_can_be_only_one = ast_threadpool_serializer("highlander", pool);
   if (there_can_be_only_one) {
      ast_taskprocessor_unreference(there_can_be_only_one);
      ast_test_status_update(test, "Duplicate name error\n");
      goto end;
   }

   res = AST_TEST_PASS;

end:
   ast_taskprocessor_unreference(uut);
   ast_threadpool_shutdown(pool);
   return res;
}

static int unload_module(void)
{
   ast_test_unregister(threadpool_push);
   ast_test_unregister(threadpool_initial_threads);
   ast_test_unregister(threadpool_thread_creation);
   ast_test_unregister(threadpool_thread_destruction);
   ast_test_unregister(threadpool_thread_timeout);
   ast_test_unregister(threadpool_thread_timeout_thrash);
   ast_test_unregister(threadpool_one_task_one_thread);
   ast_test_unregister(threadpool_one_thread_one_task);
   ast_test_unregister(threadpool_one_thread_multiple_tasks);
   ast_test_unregister(threadpool_auto_increment);
   ast_test_unregister(threadpool_max_size);
   ast_test_unregister(threadpool_reactivation);
   ast_test_unregister(threadpool_task_distribution);
   ast_test_unregister(threadpool_more_destruction);
   ast_test_unregister(threadpool_serializer);
   ast_test_unregister(threadpool_serializer_dupe);
   return 0;
}

static int load_module(void)
{
   ast_test_register(threadpool_push);
   ast_test_register(threadpool_initial_threads);
   ast_test_register(threadpool_thread_creation);
   ast_test_register(threadpool_thread_destruction);
   ast_test_register(threadpool_thread_timeout);
   ast_test_register(threadpool_thread_timeout_thrash);
   ast_test_register(threadpool_one_task_one_thread);
   ast_test_register(threadpool_one_thread_one_task);
   ast_test_register(threadpool_one_thread_multiple_tasks);
   ast_test_register(threadpool_auto_increment);
   ast_test_register(threadpool_max_size);
   ast_test_register(threadpool_reactivation);
   ast_test_register(threadpool_task_distribution);
   ast_test_register(threadpool_more_destruction);
   ast_test_register(threadpool_serializer);
   ast_test_register(threadpool_serializer_dupe);
   return AST_MODULE_LOAD_SUCCESS;
}

AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "threadpool test module");