1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
//===-- tsan_mman_test.cc -------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file is a part of ThreadSanitizer (TSan), a race detector.
//
//===----------------------------------------------------------------------===//
#include <limits>
#include "tsan_mman.h"
#include "tsan_rtl.h"
#include "gtest/gtest.h"
extern "C" {
uptr __tsan_get_current_allocated_bytes();
uptr __tsan_get_heap_size();
uptr __tsan_get_free_bytes();
uptr __tsan_get_unmapped_bytes();
uptr __tsan_get_estimated_allocated_size(uptr size);
bool __tsan_get_ownership(void *p);
uptr __tsan_get_allocated_size(void *p);
}
namespace __tsan {
TEST(Mman, Internal) {
ScopedInRtl in_rtl;
char *p = (char*)internal_alloc(MBlockScopedBuf, 10);
EXPECT_NE(p, (char*)0);
char *p2 = (char*)internal_alloc(MBlockScopedBuf, 20);
EXPECT_NE(p2, (char*)0);
EXPECT_NE(p2, p);
for (int i = 0; i < 10; i++) {
p[i] = 42;
}
for (int i = 0; i < 20; i++) {
((char*)p2)[i] = 42;
}
internal_free(p);
internal_free(p2);
}
TEST(Mman, User) {
ScopedInRtl in_rtl;
ThreadState *thr = cur_thread();
uptr pc = 0;
char *p = (char*)user_alloc(thr, pc, 10);
EXPECT_NE(p, (char*)0);
char *p2 = (char*)user_alloc(thr, pc, 20);
EXPECT_NE(p2, (char*)0);
EXPECT_NE(p2, p);
MBlock *b = user_mblock(thr, p);
EXPECT_NE(b, (MBlock*)0);
EXPECT_EQ(b->size, (uptr)10);
MBlock *b2 = user_mblock(thr, p2);
EXPECT_NE(b2, (MBlock*)0);
EXPECT_EQ(b2->size, (uptr)20);
for (int i = 0; i < 10; i++) {
p[i] = 42;
EXPECT_EQ(b, user_mblock(thr, p + i));
}
for (int i = 0; i < 20; i++) {
((char*)p2)[i] = 42;
EXPECT_EQ(b2, user_mblock(thr, p2 + i));
}
user_free(thr, pc, p);
user_free(thr, pc, p2);
}
TEST(Mman, UserRealloc) {
ScopedInRtl in_rtl;
ThreadState *thr = cur_thread();
uptr pc = 0;
{
void *p = user_realloc(thr, pc, 0, 0);
// Strictly saying this is incorrect, realloc(NULL, N) is equivalent to
// malloc(N), thus must return non-NULL pointer.
EXPECT_EQ(p, (void*)0);
}
{
void *p = user_realloc(thr, pc, 0, 100);
EXPECT_NE(p, (void*)0);
memset(p, 0xde, 100);
user_free(thr, pc, p);
}
{
void *p = user_alloc(thr, pc, 100);
EXPECT_NE(p, (void*)0);
memset(p, 0xde, 100);
void *p2 = user_realloc(thr, pc, p, 0);
EXPECT_EQ(p2, (void*)0);
}
{
void *p = user_realloc(thr, pc, 0, 100);
EXPECT_NE(p, (void*)0);
memset(p, 0xde, 100);
void *p2 = user_realloc(thr, pc, p, 10000);
EXPECT_NE(p2, (void*)0);
for (int i = 0; i < 100; i++)
EXPECT_EQ(((char*)p2)[i], (char)0xde);
memset(p2, 0xde, 10000);
user_free(thr, pc, p2);
}
{
void *p = user_realloc(thr, pc, 0, 10000);
EXPECT_NE(p, (void*)0);
memset(p, 0xde, 10000);
void *p2 = user_realloc(thr, pc, p, 10);
EXPECT_NE(p2, (void*)0);
for (int i = 0; i < 10; i++)
EXPECT_EQ(((char*)p2)[i], (char)0xde);
user_free(thr, pc, p2);
}
}
TEST(Mman, Stats) {
ScopedInRtl in_rtl;
ThreadState *thr = cur_thread();
uptr alloc0 = __tsan_get_current_allocated_bytes();
uptr heap0 = __tsan_get_heap_size();
uptr free0 = __tsan_get_free_bytes();
uptr unmapped0 = __tsan_get_unmapped_bytes();
EXPECT_EQ(__tsan_get_estimated_allocated_size(10), (uptr)10);
EXPECT_EQ(__tsan_get_estimated_allocated_size(20), (uptr)20);
EXPECT_EQ(__tsan_get_estimated_allocated_size(100), (uptr)100);
char *p = (char*)user_alloc(thr, 0, 10);
EXPECT_EQ(__tsan_get_ownership(p), true);
EXPECT_EQ(__tsan_get_allocated_size(p), (uptr)10);
EXPECT_EQ(__tsan_get_current_allocated_bytes(), alloc0 + 16);
EXPECT_GE(__tsan_get_heap_size(), heap0);
EXPECT_EQ(__tsan_get_free_bytes(), free0);
EXPECT_EQ(__tsan_get_unmapped_bytes(), unmapped0);
user_free(thr, 0, p);
EXPECT_EQ(__tsan_get_current_allocated_bytes(), alloc0);
EXPECT_GE(__tsan_get_heap_size(), heap0);
EXPECT_EQ(__tsan_get_free_bytes(), free0);
EXPECT_EQ(__tsan_get_unmapped_bytes(), unmapped0);
}
TEST(Mman, CallocOverflow) {
size_t kArraySize = 4096;
volatile size_t kMaxSizeT = std::numeric_limits<size_t>::max();
volatile size_t kArraySize2 = kMaxSizeT / kArraySize + 10;
volatile void *p = calloc(kArraySize, kArraySize2); // Should return 0.
EXPECT_EQ(0L, p);
}
} // namespace __tsan
|
