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
|
#include "test/jemalloc_test.h"
#define MAXALIGN (((size_t)1) << 23)
/*
* On systems which can't merge extents, tests that call this function generate
* a lot of dirty memory very quickly. Purging between cycles mitigates
* potential OOM on e.g. 32-bit Windows.
*/
static void
purge(void) {
expect_d_eq(mallctl("arena.0.purge", NULL, NULL, NULL, 0), 0,
"Unexpected mallctl error");
}
TEST_BEGIN(test_alignment_errors) {
size_t alignment;
void *p;
alignment = 0;
set_errno(0);
p = aligned_alloc(alignment, 1);
expect_false(p != NULL || get_errno() != EINVAL,
"Expected error for invalid alignment %zu", alignment);
for (alignment = sizeof(size_t); alignment < MAXALIGN;
alignment <<= 1) {
set_errno(0);
p = aligned_alloc(alignment + 1, 1);
expect_false(p != NULL || get_errno() != EINVAL,
"Expected error for invalid alignment %zu",
alignment + 1);
}
}
TEST_END
/*
* GCC "-Walloc-size-larger-than" warning detects when one of the memory
* allocation functions is called with a size larger than the maximum size that
* they support. Here we want to explicitly test that the allocation functions
* do indeed fail properly when this is the case, which triggers the warning.
* Therefore we disable the warning for these tests.
*/
JEMALLOC_DIAGNOSTIC_PUSH
JEMALLOC_DIAGNOSTIC_IGNORE_ALLOC_SIZE_LARGER_THAN
TEST_BEGIN(test_oom_errors) {
size_t alignment, size;
void *p;
#if LG_SIZEOF_PTR == 3
alignment = UINT64_C(0x8000000000000000);
size = UINT64_C(0x8000000000000000);
#else
alignment = 0x80000000LU;
size = 0x80000000LU;
#endif
set_errno(0);
p = aligned_alloc(alignment, size);
expect_false(p != NULL || get_errno() != ENOMEM,
"Expected error for aligned_alloc(%zu, %zu)",
alignment, size);
#if LG_SIZEOF_PTR == 3
alignment = UINT64_C(0x4000000000000000);
size = UINT64_C(0xc000000000000001);
#else
alignment = 0x40000000LU;
size = 0xc0000001LU;
#endif
set_errno(0);
p = aligned_alloc(alignment, size);
expect_false(p != NULL || get_errno() != ENOMEM,
"Expected error for aligned_alloc(%zu, %zu)",
alignment, size);
alignment = 0x10LU;
#if LG_SIZEOF_PTR == 3
size = UINT64_C(0xfffffffffffffff0);
#else
size = 0xfffffff0LU;
#endif
set_errno(0);
p = aligned_alloc(alignment, size);
expect_false(p != NULL || get_errno() != ENOMEM,
"Expected error for aligned_alloc(&p, %zu, %zu)",
alignment, size);
}
TEST_END
/* Re-enable the "-Walloc-size-larger-than=" warning */
JEMALLOC_DIAGNOSTIC_POP
TEST_BEGIN(test_alignment_and_size) {
#define NITER 4
size_t alignment, size, total;
unsigned i;
void *ps[NITER];
for (i = 0; i < NITER; i++) {
ps[i] = NULL;
}
for (alignment = 8;
alignment <= MAXALIGN;
alignment <<= 1) {
total = 0;
for (size = 1;
size < 3 * alignment && size < (1U << 31);
size += (alignment >> (LG_SIZEOF_PTR-1)) - 1) {
for (i = 0; i < NITER; i++) {
ps[i] = aligned_alloc(alignment, size);
if (ps[i] == NULL) {
char buf[BUFERROR_BUF];
buferror(get_errno(), buf, sizeof(buf));
test_fail(
"Error for alignment=%zu, "
"size=%zu (%#zx): %s",
alignment, size, size, buf);
}
total += TEST_MALLOC_SIZE(ps[i]);
if (total >= (MAXALIGN << 1)) {
break;
}
}
for (i = 0; i < NITER; i++) {
if (ps[i] != NULL) {
free(ps[i]);
ps[i] = NULL;
}
}
}
purge();
}
#undef NITER
}
TEST_END
TEST_BEGIN(test_zero_alloc) {
void *res = aligned_alloc(8, 0);
assert(res);
size_t usable = TEST_MALLOC_SIZE(res);
assert(usable > 0);
free(res);
}
TEST_END
int
main(void) {
return test(
test_alignment_errors,
test_oom_errors,
test_alignment_and_size,
test_zero_alloc);
}
|
