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
main(int argc,char * argv[])22 int 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, "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