63 lines · c
1/*2 * task-dependency.c -- Archer testcase3 */4//===----------------------------------------------------------------------===//5//6// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.7//8// See tools/archer/LICENSE.txt for details.9// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception10//11//===----------------------------------------------------------------------===//12 13// RUN: %libarcher-compile-and-run-race | FileCheck %s14// RUN: %libarcher-compile-and-run-race-noserial | FileCheck %s15// REQUIRES: tsan16#include "ompt/ompt-signal.h"17#include <omp.h>18#include <stdio.h>19#include <unistd.h>20 21int main(int argc, char *argv[]) {22 int var = 0, a = 0, b = 0;23 24#pragma omp parallel num_threads(8) shared(var, a)25#pragma omp master26 {27#pragma omp task shared(var, a, b) depend(out : var)28 {29 OMPT_SIGNAL(a);30 var++;31 OMPT_SIGNAL(b);32 }33 34#pragma omp task shared(a) depend(in : var)35 {36 OMPT_SIGNAL(a);37 OMPT_WAIT(a, 3);38 }39 40#pragma omp task shared(var, b) // depend(in: var) is missing here!41 {42 OMPT_WAIT(b, 1);43 var++;44 OMPT_SIGNAL(a);45 }46 47 // Give other thread time to steal the task.48 OMPT_WAIT(a, 2);49 }50 51 int error = (var != 2);52 fprintf(stderr, "DONE\n");53 return error;54}55 56// CHECK: WARNING: ThreadSanitizer: data race57// CHECK-NEXT: {{(Write|Read)}} of size 458// CHECK-NEXT: #0 {{.*}}task-dependency.c:4359// CHECK: Previous write of size 460// CHECK-NEXT: #0 {{.*}}task-dependency.c:3061// CHECK: DONE62// CHECK: ThreadSanitizer: reported 1 warnings63