void async_req_post(AsyncReqInfo * req) {
WorkerThread * wt;
trace(LOG_ASYNCREQ, "async_req_post: req %p, type %d", req, req->type);
#if ENABLE_AIO
{
int res = 0;
switch (req->type) {
case AsyncReqSeekRead:
case AsyncReqSeekWrite:
memset(&req->u.fio.aio, 0, sizeof(req->u.fio.aio));
req->u.fio.aio.aio_fildes = req->u.fio.fd;
req->u.fio.aio.aio_offset = req->u.fio.offset;
req->u.fio.aio.aio_buf = req->u.fio.bufp;
req->u.fio.aio.aio_nbytes = req->u.fio.bufsz;
req->u.fio.aio.aio_sigevent.sigev_notify = SIGEV_THREAD;
req->u.fio.aio.aio_sigevent.sigev_notify_function = aio_done;
req->u.fio.aio.aio_sigevent.sigev_value.sival_ptr = req;
res = req->type == AsyncReqSeekWrite ?
aio_write(&req->u.fio.aio) :
aio_read(&req->u.fio.aio);
if (res < 0) {
req->u.fio.rval = -1;
req->error = errno;
post_event(req->done, req);
}
return;
}
}
#endif
check_error(pthread_mutex_lock(&wtlock));
if (list_is_empty(&wtlist)) {
int error;
wt = loc_alloc_zero(sizeof *wt);
check_error(pthread_cond_init(&wt->cond, NULL));
wt->req = req;
error = pthread_create(&wt->thread, &pthread_create_attr, worker_thread_handler, wt);
if (error) {
trace(LOG_ALWAYS, "Can't create a worker thread: %d %s", error, errno_to_str(error));
loc_free(wt);
req->error = error;
post_event(req->done, req);
}
}
else {
wt = wtlink2wt(wtlist.next);
list_remove(&wt->wtlink);
assert(wt->req == NULL);
wt->req = req;
check_error(pthread_cond_signal(&wt->cond));
}
check_error(pthread_mutex_unlock(&wtlock));
}
static void trigger_async_shutdown(ShutdownInfo * obj) {
check_error(pthread_mutex_lock(&wtlock));
while (!list_is_empty(&wtlist)) {
WorkerThread * wt = wtlink2wt(wtlist.next);
list_remove(&wt->wtlink);
wtlist_size--;
assert(wt->req == NULL);
wt->req = &shutdown_req;
check_error(pthread_cond_signal(&wt->cond));
}
check_error(pthread_mutex_unlock(&wtlock));
}
void async_req_post(AsyncReqInfo * req) {
WorkerThread * wt;
trace(LOG_ASYNCREQ, "async_req_post: req %p, type %d", req, req->type);
assert(req->done != NULL || req->type == AsyncReqTimer);
#if ENABLE_AIO
{
int res = 0;
switch (req->type) {
case AsyncReqSeekRead:
case AsyncReqSeekWrite:
memset(&req->u.fio.aio, 0, sizeof(req->u.fio.aio));
req->u.fio.aio.aio_fildes = req->u.fio.fd;
req->u.fio.aio.aio_offset = (off_t)req->u.fio.offset;
req->u.fio.aio.aio_buf = req->u.fio.bufp;
req->u.fio.aio.aio_nbytes = req->u.fio.bufsz;
req->u.fio.aio.aio_sigevent.sigev_notify = SIGEV_THREAD;
req->u.fio.aio.aio_sigevent.sigev_notify_function = aio_done;
req->u.fio.aio.aio_sigevent.sigev_value.sival_ptr = req;
res = req->type == AsyncReqSeekWrite ?
aio_write(&req->u.fio.aio) :
aio_read(&req->u.fio.aio);
if (res < 0) {
req->u.fio.rval = -1;
req->error = errno;
post_event(req->done, req);
}
return;
}
}
#endif
check_error(pthread_mutex_lock(&wtlock));
if (list_is_empty(&wtlist)) {
assert(wtlist_size == 0);
if (is_dispatch_thread()) {
worker_thread_add(req);
}
else {
post_event(worker_thread_add_deferred, req);
}
}
else {
wt = wtlink2wt(wtlist.next);
list_remove(&wt->wtlink);
wtlist_size--;
assert(wt->req == NULL);
wt->req = req;
check_error(pthread_cond_signal(&wt->cond));
}
check_error(pthread_mutex_unlock(&wtlock));
}
