io_u timeout handling
Further measures to prevent fio getting stuck, even in case of
engine timeout errors.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/io_u.c b/io_u.c
index d30ff4b..4f17dec 100644
--- a/io_u.c
+++ b/io_u.c
@@ -582,3 +582,54 @@
slat_time = mtime_since(&io_u->start_time, &io_u->issue_time);
add_slat_sample(td, io_u->ddir, slat_time);
}
+
+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_timeout_handler(int fio_unused sig)
+{
+ struct thread_data *td, *__td;
+ pid_t pid = getpid();
+ 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->name, td->pid);
+ td->error = ETIMEDOUT;
+ exit(1);
+}
+
+void io_u_init_timeout(void)
+{
+ signal(SIGALRM, io_u_timeout_handler);
+}