+
+#ifdef FIO_USE_TIMEOUT
+void io_u_set_timeout(struct thread_data *td)
+{
+ assert(td->cur_depth);
+
+ td->timer.it_interval.tv_sec = 0;
+ td->timer.it_interval.tv_usec = 0;
+ td->timer.it_value.tv_sec = IO_U_TIMEOUT + IO_U_TIMEOUT_INC;
+ td->timer.it_value.tv_usec = 0;
+ setitimer(ITIMER_REAL, &td->timer, NULL);
+ fio_gettime(&td->timeout_end, NULL);
+}
+
+static void io_u_dump(struct io_u *io_u)
+{
+ unsigned long t_start = mtime_since_now(&io_u->start_time);
+ unsigned long t_issue = mtime_since_now(&io_u->issue_time);
+
+ log_err("io_u=%p, t_start=%lu, t_issue=%lu\n", io_u, t_start, t_issue);
+ log_err(" buf=%p/%p, len=%lu/%lu, offset=%llu\n", io_u->buf, io_u->xfer_buf, io_u->buflen, io_u->xfer_buflen, io_u->offset);
+ log_err(" ddir=%d, fname=%s\n", io_u->ddir, io_u->file->file_name);
+}
+#else
+void io_u_set_timeout(struct thread_data fio_unused *td)
+{
+}
+#endif
+
+#ifdef FIO_USE_TIMEOUT
+static void io_u_timeout_handler(int fio_unused sig)
+{
+ struct thread_data *td, *__td;
+ pid_t pid = getpid();
+ struct list_head *entry;
+ struct io_u *io_u;
+ int i;
+
+ log_err("fio: io_u timeout\n");
+
+ /*
+ * TLS would be nice...
+ */
+ td = NULL;
+ for_each_td(__td, i) {
+ if (__td->pid == pid) {
+ td = __td;
+ break;
+ }
+ }
+
+ if (!td) {
+ log_err("fio: io_u timeout, can't find job\n");
+ exit(1);
+ }
+
+ if (!td->cur_depth) {
+ log_err("fio: timeout without pending work?\n");
+ return;
+ }
+
+ log_err("fio: io_u timeout: job=%s, pid=%d\n", td->o.name, td->pid);
+
+ list_for_each(entry, &td->io_u_busylist) {
+ io_u = list_entry(entry, struct io_u, list);
+
+ io_u_dump(io_u);
+ }
+
+ td_verror(td, ETIMEDOUT, "io_u timeout");
+ exit(1);
+}
+#endif
+
+void io_u_init_timeout(void)
+{
+#ifdef FIO_USE_TIMEOUT
+ signal(SIGALRM, io_u_timeout_handler);
+#endif
+}