cancel_worksharing.c

Go to the documentation of this file.

// clang-format off
// RUN: %libomp-compile && env OMP_CANCELLATION=true %libomp-run | %sort-threads | FileCheck %s
// REQUIRES: ompt
// Current GOMP interface implementation does not support cancellation; icc 16 does not distinguish between sections and loops
// XFAIL: icc-16
// clang-format on
 
#include "callback.h"
#include <unistd.h>
 
int main() {
  int condition = 0;
#pragma omp parallel num_threads(2)
  {
    int x = 0;
    int i;
#pragma omp for
    for (i = 0; i < 2; i++) {
      if (i == 0) {
        x++;
        OMPT_SIGNAL(condition);
#pragma omp cancel for
      } else {
        x++;
        OMPT_WAIT(condition, 1);
        delay(10000);
#pragma omp cancellation point for
      }
    }
  }
#pragma omp parallel num_threads(2)
  {
#pragma omp sections
    {
#pragma omp section
      {
        OMPT_SIGNAL(condition);
#pragma omp cancel sections
      }
#pragma omp section
      {
        OMPT_WAIT(condition, 2);
        delay(10000);
#pragma omp cancellation point sections
      }
    }
  }
 
  // clang-format off
  // Check if libomp supports the callbacks for this test.
  // CHECK-NOT: {{^}}0: Could not register callback 'ompt_callback_implicit_task'
  // CHECK-NOT: {{^}}0: Could not register callback 'ompt_callback_cancel'
 
  // CHECK: {{^}}0: NULL_POINTER=[[NULL:.*$]]
  // CHECK: {{^}}[[MASTER_ID:[0-9]+]]: ompt_event_initial_task_begin: parallel_id={{[0-f]+}}, task_id={{[0-f]+}}, actual_parallelism=1, index=1, flags=1
 
  // cancel for and sections
  // CHECK: {{^}}[[MASTER_ID]]: ompt_event_cancel: task_id=[[TASK_ID:[0-f]+]], flags=ompt_cancel_loop|ompt_cancel_activated=20, codeptr_ra={{(0x)?[0-f]*}}
  // CHECK: {{^}}[[MASTER_ID]]: ompt_event_cancel: task_id=[[TASK_ID:[0-f]+]], flags=ompt_cancel_sections|ompt_cancel_{{activated=18|detected=34}}, codeptr_ra={{(0x)?[0-f]*}}
  // CHECK: {{^}}[[OTHER_THREAD_ID:[0-9]+]]: ompt_event_cancel: task_id=[[TASK_ID:[0-f]+]], flags=ompt_cancel_loop|ompt_cancel_detected=36, codeptr_ra={{(0x)?[0-f]*}}
  // CHECK: {{^}}[[OTHER_THREAD_ID:[0-9]+]]: ompt_event_cancel: task_id=[[TASK_ID:[0-f]+]], flags=ompt_cancel_sections|ompt_cancel_{{activated=18|detected=34}}, codeptr_ra={{(0x)?[0-f]*}}
  // clang-format on
 
  return 0;
}