tsan_shadow_test.cc revision 33a040af0f32bcf2e5ab25fa2c9b6a81d3a59092 
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.GetHistorySize(), 0);
26  EXPECT_EQ(s.addr0(), (u64)0);
27  EXPECT_EQ(s.size(), (u64)1);
28  EXPECT_EQ(s.IsWrite(), true);
29
30  s.IncrementEpoch();
31  EXPECT_EQ(s.epoch(), (u64)23);
32  s.IncrementEpoch();
33  EXPECT_EQ(s.epoch(), (u64)24);
34
35  s.SetIgnoreBit();
36  EXPECT_EQ(s.GetIgnoreBit(), true);
37  s.ClearIgnoreBit();
38  EXPECT_EQ(s.GetIgnoreBit(), false);
39
40  for (int i = 0; i < 8; i++) {
41    s.SetHistorySize(i);
42    EXPECT_EQ(s.GetHistorySize(), i);
43  }
44  s.SetHistorySize(2);
45  s.ClearHistorySize();
46  EXPECT_EQ(s.GetHistorySize(), 0);
47}
48
49TEST(Shadow, Mapping) {
50  static int global;
51  int stack;
52  void *heap = malloc(0);
53  free(heap);
54
55  CHECK(IsAppMem((uptr)&global));
56  CHECK(IsAppMem((uptr)&stack));
57  CHECK(IsAppMem((uptr)heap));
58
59  CHECK(IsShadowMem(MemToShadow((uptr)&global)));
60  CHECK(IsShadowMem(MemToShadow((uptr)&stack)));
61  CHECK(IsShadowMem(MemToShadow((uptr)heap)));
62}
63
64TEST(Shadow, Celling) {
65  u64 aligned_data[4];
66  char *data = (char*)aligned_data;
67  CHECK_EQ((uptr)data % kShadowSize, 0);
68  uptr s0 = MemToShadow((uptr)&data[0]);
69  CHECK_EQ(s0 % kShadowSize, 0);
70  for (unsigned i = 1; i < kShadowCell; i++)
71    CHECK_EQ(s0, MemToShadow((uptr)&data[i]));
72  for (unsigned i = kShadowCell; i < 2*kShadowCell; i++)
73    CHECK_EQ(s0 + kShadowSize*kShadowCnt, MemToShadow((uptr)&data[i]));
74  for (unsigned i = 2*kShadowCell; i < 3*kShadowCell; i++)
75    CHECK_EQ(s0 + 2*kShadowSize*kShadowCnt, MemToShadow((uptr)&data[i]));
76}
77
78}  // namespace __tsan
79