threadpool_job_fn_t
static threadpool_job_fn_t threadpool_job_dead;
threadpool_job_init(struct threadpool_job *job, threadpool_job_fn_t fn,
threadpool_job_fn_t *job_fn;
void threadpool_job_init(struct threadpool_job *, threadpool_job_fn_t,
init_test_job_data(struct test_job_data *data, threadpool_job_fn_t fn)