sanitizer_atomic_test.cc revision b037f754eb43ddd2c5401ff7c7b212b57f8f4eb6 
1//===-- sanitizer_atomic_test.cc ------------------------------------------===//
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//
10// This file is a part of ThreadSanitizer/AddressSanitizer runtime.
11//
12//===----------------------------------------------------------------------===//
13#include "sanitizer_common/sanitizer_atomic.h"
14#include "gtest/gtest.h"
15
16namespace __sanitizer {
17
18// Clang crashes while compiling this test for Android:
19// http://llvm.org/bugs/show_bug.cgi?id=15587
20#if !SANITIZER_ANDROID
21template<typename T>
22void CheckAtomicCompareExchange() {
23  typedef typename T::Type Type;
24  {
25    Type old_val = 42;
26    Type new_val = 24;
27    Type var = old_val;
28    EXPECT_TRUE(atomic_compare_exchange_strong((T*)&var, &old_val, new_val,
29                                               memory_order_relaxed));
30    EXPECT_FALSE(atomic_compare_exchange_strong((T*)&var, &old_val, new_val,
31                                                memory_order_relaxed));
32    EXPECT_EQ(new_val, old_val);
33  }
34  {
35    Type old_val = 42;
36    Type new_val = 24;
37    Type var = old_val;
38    EXPECT_TRUE(atomic_compare_exchange_weak((T*)&var, &old_val, new_val,
39                                             memory_order_relaxed));
40    EXPECT_FALSE(atomic_compare_exchange_weak((T*)&var, &old_val, new_val,
41                                              memory_order_relaxed));
42    EXPECT_EQ(new_val, old_val);
43  }
44}
45
46TEST(SanitizerCommon, AtomicCompareExchangeTest) {
47  CheckAtomicCompareExchange<atomic_uint8_t>();
48  CheckAtomicCompareExchange<atomic_uint16_t>();
49  CheckAtomicCompareExchange<atomic_uint32_t>();
50  CheckAtomicCompareExchange<atomic_uint64_t>();
51  CheckAtomicCompareExchange<atomic_uintptr_t>();
52}
53#endif  //!SANITIZER_ANDROID
54
55}  // namespace __sanitizer
56