tsan_shadow_test.cc revision 0d35d9d9b1ff686b53918f9fd36797f0911db663 
1//===-- tsan_shadow_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 (TSan), a race detector.
11//
12//===----------------------------------------------------------------------===//
13#include "tsan_platform.h"
14#include "tsan_rtl.h"
15#include "gtest/gtest.h"
16
17namespace __tsan {
18
19TEST(Shadow, FastState) {
20  Shadow s(FastState(11, 22));
21  EXPECT_EQ(s.tid(), (u64)11);
22  EXPECT_EQ(s.epoch(), (u64)22);
23  EXPECT_EQ(s.GetIgnoreBit(), false);
24  EXPECT_EQ(s.GetFreedAndReset(), false);
25  EXPECT_EQ(s.addr0(), (u64)0);
26  EXPECT_EQ(s.size(), (u64)1);
27  EXPECT_EQ(s.is_write(), false);
28
29  s.IncrementEpoch();
30  EXPECT_EQ(s.epoch(), (u64)23);
31  s.IncrementEpoch();
32  EXPECT_EQ(s.epoch(), (u64)24);
33
34  s.SetIgnoreBit();
35  EXPECT_EQ(s.GetIgnoreBit(), true);
36  s.ClearIgnoreBit();
37  EXPECT_EQ(s.GetIgnoreBit(), false);
38}
39
40TEST(Shadow, Mapping) {
41  static int global;
42  int stack;
43  void *heap = malloc(0);
44  free(heap);
45
46  CHECK(IsAppMem((uptr)&global));
47  CHECK(IsAppMem((uptr)&stack));
48  CHECK(IsAppMem((uptr)heap));
49
50  CHECK(IsShadowMem(MemToShadow((uptr)&global)));
51  CHECK(IsShadowMem(MemToShadow((uptr)&stack)));
52  CHECK(IsShadowMem(MemToShadow((uptr)heap)));
53}
54
55TEST(Shadow, Celling) {
56  u64 aligned_data[4];
57  char *data = (char*)aligned_data;
58  CHECK_EQ((uptr)data % kShadowSize, 0);
59  uptr s0 = MemToShadow((uptr)&data[0]);
60  CHECK_EQ(s0 % kShadowSize, 0);
61  for (unsigned i = 1; i < kShadowCell; i++)
62    CHECK_EQ(s0, MemToShadow((uptr)&data[i]));
63  for (unsigned i = kShadowCell; i < 2*kShadowCell; i++)
64    CHECK_EQ(s0 + kShadowSize*kShadowCnt, MemToShadow((uptr)&data[i]));
65  for (unsigned i = 2*kShadowCell; i < 3*kShadowCell; i++)
66    CHECK_EQ(s0 + 2*kShadowSize*kShadowCnt, MemToShadow((uptr)&data[i]));
67}
68
69}  // namespace __tsan
70