1 //===- llvm/unittest/Support/ManagedStatic.cpp - ManagedStatic tests ------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 #include "llvm/Support/ManagedStatic.h" 10 #include "llvm/Config/config.h" 11 #include "llvm/Support/Threading.h" 12 #ifdef HAVE_PTHREAD_H 13 #include <pthread.h> 14 #endif 15 16 #include "gtest/gtest.h" 17 18 using namespace llvm; 19 20 namespace { 21 22 #if LLVM_ENABLE_THREADS != 0 && defined(HAVE_PTHREAD_H) && \ 23 !__has_feature(memory_sanitizer) 24 namespace test1 { 25 llvm::ManagedStatic<int> ms; 26 void *helper(void*) { 27 *ms; 28 return nullptr; 29 } 30 31 // Valgrind's leak checker complains glibc's stack allocation. 32 // To appease valgrind, we provide our own stack for each thread. 33 void *allocate_stack(pthread_attr_t &a, size_t n = 65536) { 34 void *stack = malloc(n); 35 pthread_attr_init(&a); 36 #if defined(__linux__) 37 pthread_attr_setstack(&a, stack, n); 38 #endif 39 return stack; 40 } 41 } 42 43 TEST(Initialize, MultipleThreads) { 44 // Run this test under tsan: http://code.google.com/p/data-race-test/ 45 46 pthread_attr_t a1, a2; 47 void *p1 = test1::allocate_stack(a1); 48 void *p2 = test1::allocate_stack(a2); 49 50 pthread_t t1, t2; 51 pthread_create(&t1, &a1, test1::helper, nullptr); 52 pthread_create(&t2, &a2, test1::helper, nullptr); 53 pthread_join(t1, nullptr); 54 pthread_join(t2, nullptr); 55 free(p1); 56 free(p2); 57 } 58 #endif 59 60 } // anonymous namespace 61
