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 #ifdef HAVE_PTHREAD_H
23 namespace test1 {
24 llvm::ManagedStatic<int> ms;
helper(void *)25 void *helper(void*) {
26 *ms;
27 return NULL;
28 }
29
30 // Valgrind's leak checker complains glibc's stack allocation.
31 // To appease valgrind, we provide our own stack for each thread.
allocate_stack(pthread_attr_t & a,size_t n=65536)32 void *allocate_stack(pthread_attr_t &a, size_t n = 65536) {
33 void *stack = malloc(n);
34 pthread_attr_init(&a);
35 #if defined(__linux__)
36 pthread_attr_setstack(&a, stack, n);
37 #endif
38 return stack;
39 }
40 }
41
TEST(Initialize,MultipleThreads)42 TEST(Initialize, MultipleThreads) {
43 // Run this test under tsan: http://code.google.com/p/data-race-test/
44
45 pthread_attr_t a1, a2;
46 void *p1 = test1::allocate_stack(a1);
47 void *p2 = test1::allocate_stack(a2);
48
49 llvm_start_multithreaded();
50 pthread_t t1, t2;
51 pthread_create(&t1, &a1, test1::helper, NULL);
52 pthread_create(&t2, &a2, test1::helper, NULL);
53 pthread_join(t1, NULL);
54 pthread_join(t2, NULL);
55 free(p1);
56 free(p2);
57 llvm_stop_multithreaded();
58 }
59 #endif
60
61 } // anonymous namespace
62