1 files changed, 73 insertions, 0 deletions
diff --git a/final/runtime/test/worksharing/single/omp_single_nowait.c b/final/runtime/test/worksharing/single/omp_single_nowait.c
new file mode 100644
index 0000000..22f8930
--- /dev/null
+++ b/final/runtime/test/worksharing/single/omp_single_nowait.c
@@ -0,0 +1,73 @@
+// RUN: %libomp-compile-and-run
+#include <stdio.h>
+#include "omp_testsuite.h"
+
+/*
+ * This test will hang if the nowait is not working properly
+ *
+ * It relies on a one thread skipping to the last single construct to
+ * release the threads in the first three single constructs
+ */
+volatile int release;
+volatile int count;
+
+void wait_for_release_then_increment(int rank)
+{
+  fprintf(stderr, "Thread nr %d enters first section"
+    " and waits.\n", rank);
+  while (release == 0);
+  #pragma omp atomic
+  count++;
+}
+
+void release_and_increment(int rank)
+{
+  fprintf(stderr, "Thread nr %d sets release to 1\n", rank);
+  release = 1;
+  #pragma omp atomic
+  count++;
+}
+
+int test_omp_single_nowait()
+{
+  release = 0;
+  count = 0;
+
+  #pragma omp parallel num_threads(4)
+  {
+    int rank;
+    rank = omp_get_thread_num ();
+    #pragma omp single nowait
+    {
+      wait_for_release_then_increment(rank);
+    }
+    #pragma omp single nowait
+    {
+      wait_for_release_then_increment(rank);
+    }
+    #pragma omp single nowait
+    {
+      wait_for_release_then_increment(rank);
+    }
+
+    #pragma omp single
+    {
+      release_and_increment(rank);
+    }
+  }
+  // Check to make sure all four singles were executed
+  return (count==4);
+} /* end of check_single_nowait*/
+
+int main()
+{
+  int i;
+  int num_failed=0;
+
+  for(i = 0; i < REPETITIONS; i++) {
+    if(!test_omp_single_nowait()) {
+      num_failed++;
+    }
+  }
+  return num_failed;
+}