taskyield.c

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// clang-format off
// RUN: %libomp-compile-and-run | %sort-threads | FileCheck %s
// REQUIRES: ompt
// Current GOMP interface implements taskyield as stub
// XFAIL: gcc
// clang-format on
 
#include "callback.h"
#include <omp.h>
#include <unistd.h>
 
int main() {
  int condition = 0, x = 0;
#pragma omp parallel num_threads(2)
  {
#pragma omp master
    {
#pragma omp task shared(condition)
      {
        OMPT_SIGNAL(condition);
        OMPT_WAIT(condition, 2);
      }
      OMPT_WAIT(condition, 1);
#pragma omp task shared(x)
      {
        x++;
      }
      printf("%" PRIu64 ": before yield\n", ompt_get_thread_data()->value);
#pragma omp taskyield
      printf("%" PRIu64 ": after yield\n", ompt_get_thread_data()->value);
      OMPT_SIGNAL(condition);
    }
  }
 
  // clang-format off
  // 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_task_schedule'
  // CHECK-NOT: {{^}}0: Could not register callback 'ompt_callback_implicit_task'
 
 
  // CHECK: {{^}}0: NULL_POINTER=[[NULL:.*$]]
 
  // make sure initial data pointers are null
  // CHECK-NOT: 0: new_task_data initially not null
  
  // CHECK: {{^}}[[MASTER_ID:[0-9]+]]: ompt_event_implicit_task_begin: parallel_id={{[0-f]+}}, task_id=[[IMPLICIT_TASK_ID:[0-f]+]], team_size={{[0-9]+}}, thread_num={{[0-9]+}}
 
  // CHECK: {{^}}[[MASTER_ID]]: ompt_event_task_create: parent_task_id={{[0-f]+}}, parent_task_frame.exit={{(0x)?[0-f]+}}, parent_task_frame.reenter={{(0x)?[0-f]+}}, new_task_id=[[WORKER_TASK:[0-9]+]], codeptr_ra={{(0x)?[0-f]+}}, task_type=ompt_task_explicit=4, has_dependences=no
  // CHECK: {{^}}[[MASTER_ID]]: ompt_event_task_create: parent_task_id={{[0-f]+}}, parent_task_frame.exit={{(0x)?[0-f]+}}, parent_task_frame.reenter={{(0x)?[0-f]+}}, new_task_id=[[MAIN_TASK:[0-9]+]], codeptr_ra={{(0x)?[0-f]+}}, task_type=ompt_task_explicit=4, has_dependences=no
 
  // CHECK: {{^}}[[MASTER_ID]]: ompt_event_task_schedule: first_task_id=[[IMPLICIT_TASK_ID]], second_task_id=[[MAIN_TASK]], prior_task_status=ompt_task_yield=2
  // CHECK: {{^}}[[MASTER_ID]]: ompt_event_task_schedule: first_task_id=[[MAIN_TASK]], second_task_id=[[IMPLICIT_TASK_ID]], prior_task_status=ompt_task_complete=1
 
  // CHECK: {{^}}[[THREAD_ID:[0-9]+]]: ompt_event_task_schedule: first_task_id={{[0-f]+}}, second_task_id=[[WORKER_TASK]], prior_task_status=ompt_task_switch=7
  // CHECK: {{^}}[[THREAD_ID]]: ompt_event_task_schedule: first_task_id=[[WORKER_TASK]], second_task_id={{[0-f]+}}, prior_task_status=ompt_task_complete=1
  // clang-format on
 
  return 0;
}