1 /* 2 * task-dependency.c -- Archer testcase 3 */ 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-exception 10 // 11 //===----------------------------------------------------------------------===// 12 13 // RUN: %libarcher-compile-and-run-race | FileCheck %s 14 // RUN: %libarcher-compile-and-run-race-noserial | FileCheck %s 15 // REQUIRES: tsan 16 #include "ompt/ompt-signal.h" 17 #include <omp.h> 18 #include <stdio.h> 19 #include <unistd.h> 20 main(int argc,char * argv[])21int main(int argc, char *argv[]) { 22 int var = 0, a = 0; 23 24 #pragma omp parallel num_threads(2) shared(var, a) 25 #pragma omp master 26 { 27 #pragma omp task shared(var, a) depend(out : var) 28 { 29 OMPT_SIGNAL(a); 30 var++; 31 } 32 33 #pragma omp task shared(a) depend(in : var) 34 { 35 OMPT_SIGNAL(a); 36 OMPT_WAIT(a, 3); 37 } 38 39 #pragma omp task shared(var) // depend(in: var) is missing here! 40 { 41 var++; 42 OMPT_SIGNAL(a); 43 } 44 45 // Give other thread time to steal the task. 46 OMPT_WAIT(a, 2); 47 } 48 49 int error = (var != 2); 50 fprintf(stderr, "DONE\n"); 51 return error; 52 } 53 54 // CHECK: WARNING: ThreadSanitizer: data race 55 // CHECK-NEXT: {{(Write|Read)}} of size 4 56 // CHECK-NEXT: #0 {{.*}}task-dependency.c:41 57 // CHECK: Previous write of size 4 58 // CHECK-NEXT: #0 {{.*}}task-dependency.c:30 59 // CHECK: DONE 60 // CHECK: ThreadSanitizer: reported 1 warnings 61