tsan_shadow_test.cc revision f548ef8e3c6bce5a6b2bee48b8f942d2e27ebf92 
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 "gtest/gtest.h"
15
16namespace __tsan {
17
18TEST(Shadow, Mapping) {
19  static int global;
20  int stack;
21  void *heap = malloc(0);
22  free(heap);
23
24  CHECK(IsAppMem((uptr)&global));
25  CHECK(IsAppMem((uptr)&stack));
26  CHECK(IsAppMem((uptr)heap));
27
28  CHECK(IsShadowMem(MemToShadow((uptr)&global)));
29  CHECK(IsShadowMem(MemToShadow((uptr)&stack)));
30  CHECK(IsShadowMem(MemToShadow((uptr)heap)));
31}
32
33TEST(Shadow, Celling) {
34  u64 aligned_data[4];
35  char *data = (char*)aligned_data;
36  CHECK_EQ((uptr)data % kShadowSize, 0);
37  uptr s0 = MemToShadow((uptr)&data[0]);
38  CHECK_EQ(s0 % kShadowSize, 0);
39  for (unsigned i = 1; i < kShadowCell; i++)
40    CHECK_EQ(s0, MemToShadow((uptr)&data[i]));
41  for (unsigned i = kShadowCell; i < 2*kShadowCell; i++)
42    CHECK_EQ(s0 + kShadowSize*kShadowCnt, MemToShadow((uptr)&data[i]));
43  for (unsigned i = 2*kShadowCell; i < 3*kShadowCell; i++)
44    CHECK_EQ(s0 + 2*kShadowSize*kShadowCnt, MemToShadow((uptr)&data[i]));
45}
46
47}  // namespace __tsan
48