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Side by Side Diff: base/allocator/tcmalloc_unittest.cc

Issue 1647803004: Move base to DEPS (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 4 years, 10 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 #include <stddef.h>
5 #include <stdio.h>
6
7 #include "testing/gtest/include/gtest/gtest.h"
8
9 // TCMalloc header files.
10 #include "common.h" // For TCMalloc constants like page size, etc.
11
12 // TCMalloc implementation.
13 #include "debugallocation_shim.cc"
14
15 namespace {
16
17 void* TCMallocDoMallocForTest(size_t size) {
18 return do_malloc(size);
19 }
20
21 void TCMallocDoFreeForTest(void* ptr) {
22 do_free(ptr);
23 }
24
25 size_t ExcludeSpaceForMarkForTest(size_t size) {
26 return ExcludeSpaceForMark(size);
27 }
28
29 } // namespace
30
31 TEST(TCMallocFreeCheck, BadPointerInFirstPageOfTheLargeObject) {
32 char* p = reinterpret_cast<char*>(
33 TCMallocDoMallocForTest(ExcludeSpaceForMarkForTest(kMaxSize + 1)));
34 for (int offset = 1; offset < kPageSize ; offset <<= 1) {
35 ASSERT_DEATH(TCMallocDoFreeForTest(p + offset),
36 "Pointer is not pointing to the start of a span");
37 }
38 }
39
40 TEST(TCMallocFreeCheck, BadPageAlignedPointerInsideLargeObject) {
41 char* p = reinterpret_cast<char*>(
42 TCMallocDoMallocForTest(ExcludeSpaceForMarkForTest(kMaxSize + 1)));
43
44 for (int offset = kPageSize; offset < kMaxSize; offset += kPageSize) {
45 // Only the first and last page of a span are in heap map. So for others
46 // tcmalloc will give a general error of invalid pointer.
47 ASSERT_DEATH(TCMallocDoFreeForTest(p + offset),
48 "Attempt to free invalid pointer");
49 }
50 ASSERT_DEATH(TCMallocDoFreeForTest(p + kMaxSize),
51 "Pointer is not pointing to the start of a span");
52 }
53
54 TEST(TCMallocFreeCheck, DoubleFreeLargeObject) {
55 char* p = reinterpret_cast<char*>(
56 TCMallocDoMallocForTest(ExcludeSpaceForMarkForTest(kMaxSize + 1)));
57 ASSERT_DEATH(TCMallocDoFreeForTest(p); TCMallocDoFreeForTest(p),
58 "Object was not in-use");
59 }
60
61
62 #ifdef NDEBUG
63 TEST(TCMallocFreeCheck, DoubleFreeSmallObject) {
64 for (size_t size = 1;
65 size <= ExcludeSpaceForMarkForTest(kMaxSize);
66 size <<= 1) {
67 char* p = reinterpret_cast<char*>(TCMallocDoMallocForTest(size));
68 ASSERT_DEATH(TCMallocDoFreeForTest(p); TCMallocDoFreeForTest(p),
69 "Circular loop in list detected");
70 }
71 }
72 #else
73 TEST(TCMallocFreeCheck, DoubleFreeSmallObject) {
74 size_t size = 1;
75
76 // When the object is small, tcmalloc validation can not distinguish normal
77 // memory corruption or double free, because there's not enough space in
78 // freed objects to keep the mark.
79 for (; size <= ExcludeSpaceForMarkForTest(kMinClassSize); size <<= 1) {
80 char* p = reinterpret_cast<char*>(TCMallocDoMallocForTest(size));
81 ASSERT_DEATH(TCMallocDoFreeForTest(p); TCMallocDoFreeForTest(p),
82 "Memory corrupted");
83 }
84
85 for (; size <= ExcludeSpaceForMarkForTest(kMaxSize); size <<= 1) {
86 char* p = reinterpret_cast<char*>(TCMallocDoMallocForTest(size));
87 ASSERT_DEATH(TCMallocDoFreeForTest(p); TCMallocDoFreeForTest(p),
88 "Attempt to double free");
89 }
90 }
91 #endif
92
93 int main(int argc, char **argv) {
94 testing::InitGoogleTest(&argc, argv);
95 return RUN_ALL_TESTS();
96 }
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