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61 lines
1.5 KiB
61 lines
1.5 KiB
4 months ago
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/*
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* task-dependency.c -- Archer testcase
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*/
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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//
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// See tools/archer/LICENSE.txt for details.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// RUN: %libarcher-compile-and-run-race | FileCheck %s
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// RUN: %libarcher-compile-and-run-race-noserial | FileCheck %s
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// REQUIRES: tsan
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#include "ompt/ompt-signal.h"
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#include <omp.h>
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#include <stdio.h>
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#include <unistd.h>
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int main(int argc, char *argv[]) {
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int var = 0, a = 0;
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#pragma omp parallel num_threads(2) shared(var, a)
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#pragma omp master
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{
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#pragma omp task shared(var, a) depend(out : var)
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{
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OMPT_SIGNAL(a);
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var++;
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}
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#pragma omp task shared(a) depend(in : var)
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{
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OMPT_SIGNAL(a);
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OMPT_WAIT(a, 3);
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}
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#pragma omp task shared(var) // depend(in: var) is missing here!
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{
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var++;
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OMPT_SIGNAL(a);
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}
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// Give other thread time to steal the task.
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OMPT_WAIT(a, 2);
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}
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int error = (var != 2);
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fprintf(stderr, "DONE\n");
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return error;
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}
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// CHECK: WARNING: ThreadSanitizer: data race
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// CHECK-NEXT: {{(Write|Read)}} of size 4
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// CHECK-NEXT: #0 {{.*}}task-dependency.c:41
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// CHECK: Previous write of size 4
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// CHECK-NEXT: #0 {{.*}}task-dependency.c:30
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// CHECK: DONE
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// CHECK: ThreadSanitizer: reported 1 warnings
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