--- /dev/null
+// RUN: %libomp-compile-and-run | FileCheck %s
+// REQUIRES: ompt
+
+#include "callback.h"
+#include <omp.h>
+
+
+__attribute__ ((noinline)) // workaround for bug in icc
+void print_task_info_at(int ancestor_level, int id)
+{
+#pragma omp critical
+ {
+ int task_type;
+ char buffer[2048];
+ ompt_data_t *parallel_data;
+ ompt_data_t *task_data;
+ int thread_num;
+ ompt_get_task_info(ancestor_level, &task_type, &task_data, NULL,
+ ¶llel_data, &thread_num);
+ format_task_type(task_type, buffer);
+ printf("%" PRIu64 ": ancestor_level=%d id=%d task_type=%s=%d "
+ "parallel_id=%" PRIu64 " task_id=%" PRIu64
+ " thread_num=%d\n",
+ ompt_get_thread_data()->value, ancestor_level, id, buffer,
+ task_type, parallel_data->value, task_data->value, thread_num);
+ }
+};
+
+__attribute__ ((noinline)) // workaround for bug in icc
+void print_innermost_task_info(int id)
+{
+ print_task_info_at(0, id);
+}
+
+
+int main()
+{
+
+#pragma omp parallel num_threads(2)
+ {
+ // sync threads before checking the output
+#pragma omp barrier
+ // region 0
+ if (omp_get_thread_num() == 1) {
+ // executed by worker thread only
+ // assert that thread_num is 1
+ print_innermost_task_info(1);
+
+#pragma omp parallel num_threads(1)
+ {
+ // serialized region 1
+ // assert that thread_num is 0
+ print_innermost_task_info(2);
+
+#pragma omp parallel num_threads(1)
+ {
+ // serialized region 2
+ // assert that thread_num is 0
+ print_innermost_task_info(3);
+
+ // Check the value of thread_num while iterating over the hierarchy
+ // of active tasks.
+ print_task_info_at(0, 3);
+ print_task_info_at(1, 2);
+ print_task_info_at(2, 1);
+
+ }
+
+ }
+ }
+ }
+
+
+ // Check if libomp supports the callbacks for this test.
+ // CHECK-NOT: {{^}}0: Could not register callback 'ompt_callback_task_create'
+ // CHECK-NOT: {{^}}0: Could not register callback 'ompt_callback_implicit_task'
+
+
+ // CHECK: {{^}}0: NULL_POINTER=[[NULL:.*$]]
+ // CHECK: {{^}}[[MASTER_ID:[0-9]+]]: ompt_event_initial_task_begin: parallel_id=[[PARALLEL_ID_0:[0-9]+]], task_id=[[TASK_ID_0:[0-9]+]], actual_parallelism=1, index=1, flags=1
+
+ // region 0
+ // CHECK: {{^}}[[MASTER_ID]]: ompt_event_parallel_begin: parent_task_id=[[TASK_ID_0]],
+ // CHECK-SAME: parallel_id=[[PARALLEL_ID_1:[0-9]+]]
+ // CHECK-DAG: {{^}}[[MASTER_ID]]: ompt_event_implicit_task_begin: parallel_id=[[PARALLEL_ID_1]], task_id=[[TASK_ID_1:[0-9]+]]
+ // CHECK-DAG: {{^}}[[WORKER_ID:[0-9]+]]: ompt_event_implicit_task_begin: parallel_id=[[PARALLEL_ID_1]], task_id=[[TASK_ID_2:[0-9]+]]
+ // assert some info about implicit task executed by worker thread
+ // thread_num is the most important
+ // CHECK: {{^}}[[WORKER_ID]]: ancestor_level=0 id=1
+ // CHECK-SAME: parallel_id=[[PARALLEL_ID_1]] task_id=[[TASK_ID_2]]
+ // CHECK-SAME: thread_num=1
+
+ // serialized region 1
+ // CHECK: {{^}}[[WORKER_ID]]: ompt_event_parallel_begin: parent_task_id=[[TASK_ID_2]],
+ // CHECK-SAME: parallel_id=[[PARALLEL_ID_2:[0-9]+]]
+ // CHECK-DAG: {{^}}[[WORKER_ID]]: ompt_event_implicit_task_begin: parallel_id=[[PARALLEL_ID_2]], task_id=[[TASK_ID_3:[0-9]+]]
+ // assert some information about the implicit task of the serialized region 1
+ // pay attention that thread_num should take value 0
+ // CHECK: {{^}}[[WORKER_ID]]: ancestor_level=0 id=2
+ // CHECK-SAME: parallel_id=[[PARALLEL_ID_2]] task_id=[[TASK_ID_3]]
+ // CHECK-SAME: thread_num=0
+
+ // serialized region 2
+ // CHECK: {{^}}[[WORKER_ID]]: ompt_event_parallel_begin: parent_task_id=[[TASK_ID_3]],
+ // CHECK-SAME: parallel_id=[[PARALLEL_ID_3:[0-9]+]]
+ // CHECK-DAG: {{^}}[[WORKER_ID]]: ompt_event_implicit_task_begin: parallel_id=[[PARALLEL_ID_3]], task_id=[[TASK_ID_4:[0-9]+]]
+ // assert some information about the implicit task of the serialized region 2
+ // pay attention that thread_num should take value 0
+ // CHECK: {{^}}[[WORKER_ID]]: ancestor_level=0 id=3
+ // CHECK-SAME: parallel_id=[[PARALLEL_ID_3]] task_id=[[TASK_ID_4]]
+ // CHECK-SAME: thread_num=0
+
+ // Check the value of thread_num argument while iterating over the hierarchy
+ // of active tasks. The expected is that thread_num takes the value checked
+ // above in the test case (0, 0, 1 - respectively).
+
+ // Thread is the master thread of the region 2, so thread_num should be 0.
+ // CHECK: {{^}}[[WORKER_ID]]: ancestor_level=0 id=3
+ // CHECK-SAME: parallel_id=[[PARALLEL_ID_3]] task_id=[[TASK_ID_4]]
+ // CHECK-SAME: thread_num=0
+
+ // Thread is the master thread of the region 1, so thread_num should be 0.
+ // CHECK: {{^}}[[WORKER_ID]]: ancestor_level=1 id=2
+ // CHECK-SAME: parallel_id=[[PARALLEL_ID_2]] task_id=[[TASK_ID_3]]
+ // CHECK-SAME: thread_num=0
+
+ // Thread is the worker thread of the region 0, so thread_num should be 1.
+ // CHECK: {{^}}[[WORKER_ID]]: ancestor_level=2 id=1
+ // CHECK-SAME: parallel_id=[[PARALLEL_ID_1]] task_id=[[TASK_ID_2]]
+ // CHECK-SAME: thread_num=1
+
+ return 0;
+}