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
17 namespace __tsan {
18
TEST(Shadow,FastState)19 TEST(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
TEST(Shadow,Mapping)49 TEST(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
TEST(Shadow,Celling)64 TEST(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