//===- llvm/unittest/Support/ManagedStatic.cpp - ManagedStatic tests ------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Config/config.h"
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#include "llvm/Support/Threading.h"
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#ifdef HAVE_PTHREAD_H
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#include <pthread.h>
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#endif
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#include "gtest/gtest.h"
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using namespace llvm;
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namespace {
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#if LLVM_ENABLE_THREADS != 0 && defined(HAVE_PTHREAD_H) && \
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!__has_feature(memory_sanitizer)
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namespace test1 {
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llvm::ManagedStatic<int> ms;
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void *helper(void*) {
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*ms;
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return nullptr;
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}
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// Valgrind's leak checker complains glibc's stack allocation.
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// To appease valgrind, we provide our own stack for each thread.
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void *allocate_stack(pthread_attr_t &a, size_t n = 65536) {
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void *stack = malloc(n);
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pthread_attr_init(&a);
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#if defined(__linux__)
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pthread_attr_setstack(&a, stack, n);
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#endif
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return stack;
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}
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}
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TEST(Initialize, MultipleThreads) {
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// Run this test under tsan: http://code.google.com/p/data-race-test/
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pthread_attr_t a1, a2;
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void *p1 = test1::allocate_stack(a1);
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void *p2 = test1::allocate_stack(a2);
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pthread_t t1, t2;
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pthread_create(&t1, &a1, test1::helper, nullptr);
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pthread_create(&t2, &a2, test1::helper, nullptr);
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pthread_join(t1, nullptr);
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pthread_join(t2, nullptr);
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free(p1);
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free(p2);
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}
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#endif
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} // anonymous namespace
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