1 files changed, 104 insertions, 0 deletions
diff --git a/final/runtime/test/worksharing/sections/omp_sections_nowait.c b/final/runtime/test/worksharing/sections/omp_sections_nowait.c
new file mode 100644
index 0000000..caff254
--- /dev/null
+++ b/final/runtime/test/worksharing/sections/omp_sections_nowait.c
@@ -0,0 +1,104 @@
+// 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 thread skipping to the second sections construct to
+ * release the threads in the first sections construct
+ *
+ * Also, since scheduling of sections is implementation defined, it is
+ * necessary to have all four sections in the second sections construct
+ * release the threads since we can't guarantee which section a single thread
+ * will execute.
+ */
+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 flush(release)
+  #pragma omp atomic
+  count++;
+}
+
+int test_omp_sections_nowait()
+{
+  release = 0;
+  count = 0;
+
+  #pragma omp parallel num_threads(4)
+  {
+    int rank;
+    rank = omp_get_thread_num ();
+    #pragma omp sections nowait
+    {
+      #pragma omp section
+      {
+        wait_for_release_then_increment(rank);
+      }
+      #pragma omp section
+      {
+        wait_for_release_then_increment(rank);
+      }
+      #pragma omp section
+      {
+        wait_for_release_then_increment(rank);
+      }
+      #pragma omp section
+      {
+        fprintf(stderr, "Thread nr %d enters first sections and goes "
+          "immediately to next sections construct to release.\n", rank);
+        #pragma omp atomic
+        count++;
+      }
+    }
+    /* Begin of second sections environment */
+    #pragma omp sections
+    {
+      #pragma omp section
+      {
+        release_and_increment(rank);
+      }
+      #pragma omp section
+      {
+        release_and_increment(rank);
+      }
+      #pragma omp section
+      {
+        release_and_increment(rank);
+      }
+      #pragma omp section
+      {
+        release_and_increment(rank);
+      }
+    }
+  }
+  // Check to make sure all eight sections were executed
+  return (count==8);
+}
+
+int main()
+{
+  int i;
+  int num_failed=0;
+
+  for(i = 0; i < REPETITIONS; i++) {
+    if(!test_omp_sections_nowait()) {
+      num_failed++;
+    }
+  }
+  return num_failed;
+}