Add support for waiting for other jobs by name

[fio.git] / backend.c

diff --git a/backend.c b/backend.c
index 9920e630dc113bff1288ffb9d2f8bf160ac5347c..edc0644a113b259cf2d65cf91f96175a5f50201b 100644 (file)
--- a/backend.c
+++ b/backend.c
@@ -1978,6 +1978,32 @@ mounted:
        return true;
 }
 
+static bool waitee_running(struct thread_data *me)
+{
+       const char *waitee = me->o.wait_for;
+       const char *self = me->o.name;
+       struct thread_data *td;
+       int i;
+
+       if (!waitee)
+               return false;
+
+       for_each_td(td, i) {
+               if (!strcmp(td->o.name, self) || strcmp(td->o.name, waitee))
+                       continue;
+
+               if (td->runstate < TD_EXITED) {
+                       dprint(FD_PROCESS, "%s fenced by %s(%s)\n",
+                                       self, td->o.name,
+                                       runstate_to_name(td->runstate));
+                       return true;
+               }
+       }
+
+       dprint(FD_PROCESS, "%s: %s completed, can run\n", self, waitee);
+       return false;
+}
+
 /*
  * Main function for kicking off and reaping jobs, as needed.
  */
@@ -2101,6 +2127,12 @@ reap:
                                break;
                        }
 
+                       if (waitee_running(td)) {
+                               dprint(FD_PROCESS, "%s: waiting for %s\n",
+                                               td->o.name, td->o.wait_for);
+                               break;
+                       }
+
                        init_disk_util(td);
 
                        td->rusage_sem = fio_mutex_init(FIO_MUTEX_LOCKED);