1/*
2 * task-dependency.c -- Archer testcase
3 */
4
5//===----------------------------------------------------------------------===//
6//
7// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
8//
9// See tools/archer/LICENSE.txt for details.
10// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
11//
12//===----------------------------------------------------------------------===//
13
14
15// RUN: %libarcher-compile-and-run | FileCheck %s
16// REQUIRES: tsan
17#include <omp.h>
18#include <stdio.h>
19#include <unistd.h>
20#include "ompt/ompt-signal.h"
21
22int main(int argc, char *argv[]) {
23 int var = 0, a = 0;
24
25#pragma omp parallel num_threads(2) shared(var, a)
26#pragma omp master
27 {
28#pragma omp task shared(var, a) depend(out : var)
29 {
30 var++;
31 OMPT_SIGNAL(a);
32 }
33
34#pragma omp task shared(var, a) depend(in : var)
35 { OMPT_WAIT(a, 2); }
36
37#pragma omp task shared(var, a) depend(in : var)
38 {
39 OMPT_SIGNAL(a);
40 var++;
41 }
42
43 // Give other thread time to steal the task.
44 OMPT_WAIT(a, 1);
45 }
46
47 fprintf(stderr, format: "DONE\n");
48 int error = (var != 2);
49 return error;
50}
51
52// CHECK-NOT: ThreadSanitizer: data race
53// CHECK-NOT: ThreadSanitizer: reported
54// CHECK: DONE
55

source code of openmp/tools/archer/tests/task/task-dependency.c