Add nOS-V resubmit-race RT test

test/rt/nosv/CMakeLists.txt

@@ -45,6 +45,7 @@ nosv_test(barrier.c SORT LEVEL 3)
 nosv_test(cond.c SORT LEVEL 3)
 nosv_test(yield-noisy.c NAME "yield-noisy-l3" DRIVER "yield-noisy-l3.driver.sh")
 nosv_test(yield-noisy.c NAME "yield-noisy-l4" DRIVER "yield-noisy-l4.driver.sh")
+nosv_test(resubmit-race.c SORT)
 
 # Test multiple instrumentation levels
 nosv_test(several-tasks.c SORT NAME several-tasks-level-0 LEVEL 0)

test/rt/nosv/resubmit-race.c

@@ -0,0 +1,62 @@
+/* Copyright (c) 2025 Barcelona Supercomputing Center (BSC)
+ * SPDX-License-Identifier: GPL-3.0-or-later */
+
+#include <nosv.h>
+#include <nosv/affinity.h>
+#include <stdatomic.h>
+#include <unistd.h>
+#include "compat.h"
+#include "common.h"
+
+#define NTASKS 10
+
+atomic_int nr_completed_tasks;
+atomic_int completed;
+
+nosv_task_t child_task;
+nosv_task_t main_task;
+
+static void
+task_run(nosv_task_t task)
+{
+	UNUSED(task);
+	sleep_us(100);
+}
+
+static void
+task_comp(nosv_task_t task)
+{
+	int total = atomic_fetch_add(&nr_completed_tasks, 1);
+	if (total < NTASKS) {
+		nosv_submit(task, NOSV_SUBMIT_NONE);
+		/* Wait to give the scheduler the chance to win the race */
+		sleep_us(100);
+	} else {
+		nosv_submit(main_task, NOSV_SUBMIT_UNLOCKED);
+	}
+}
+
+int
+main(void)
+{
+	nosv_init();
+
+	nosv_attach(&main_task, NULL, NULL, NOSV_ATTACH_NONE);
+
+	nosv_task_type_t task_type;
+	nosv_type_init(&task_type, task_run, NULL, task_comp, "child_task", NULL, NULL, NOSV_TYPE_INIT_NONE);
+	nosv_create(&child_task, task_type, 0, 0);
+	nosv_submit(child_task, NOSV_SUBMIT_NONE);
+
+	nosv_pause(NOSV_PAUSE_NONE);
+
+	nosv_destroy(child_task, NOSV_DESTROY_NONE);
+
+	nosv_detach(NOSV_DETACH_NONE);
+
+	nosv_type_destroy(task_type, NOSV_TYPE_DESTROY_NONE);
+
+	nosv_shutdown();
+
+	return 0;
+}