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
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
/*
* Xor Based Zero Run Length Encoding unit tests.
*
* Copyright 2013 Red Hat, Inc. and/or its affiliates
*
* Authors:
* Orit Wasserman <owasserm@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
*/
#include "qemu/osdep.h"
#include "qemu-common.h"
#include "include/migration/migration.h"
#define PAGE_SIZE 4096
static void test_uleb(void)
{
uint32_t i, val;
uint8_t buf[2];
int encode_ret, decode_ret;
for (i = 0; i <= 0x3fff; i++) {
encode_ret = uleb128_encode_small(&buf[0], i);
decode_ret = uleb128_decode_small(&buf[0], &val);
g_assert(encode_ret == decode_ret);
g_assert(i == val);
}
/* decode invalid value */
buf[0] = 0x80;
buf[1] = 0x80;
decode_ret = uleb128_decode_small(&buf[0], &val);
g_assert(decode_ret == -1);
g_assert(val == 0);
}
static void test_encode_decode_zero(void)
{
uint8_t *buffer = g_malloc0(PAGE_SIZE);
uint8_t *compressed = g_malloc0(PAGE_SIZE);
int i = 0;
int dlen = 0;
int diff_len = g_test_rand_int_range(0, PAGE_SIZE - 1006);
for (i = diff_len; i > 0; i--) {
buffer[1000 + i] = i;
}
buffer[1000 + diff_len + 3] = 103;
buffer[1000 + diff_len + 5] = 105;
/* encode zero page */
dlen = xbzrle_encode_buffer(buffer, buffer, PAGE_SIZE, compressed,
PAGE_SIZE);
g_assert(dlen == 0);
g_free(buffer);
g_free(compressed);
}
static void test_encode_decode_unchanged(void)
{
uint8_t *compressed = g_malloc0(PAGE_SIZE);
uint8_t *test = g_malloc0(PAGE_SIZE);
int i = 0;
int dlen = 0;
int diff_len = g_test_rand_int_range(0, PAGE_SIZE - 1006);
for (i = diff_len; i > 0; i--) {
test[1000 + i] = i + 4;
}
test[1000 + diff_len + 3] = 107;
test[1000 + diff_len + 5] = 109;
/* test unchanged buffer */
dlen = xbzrle_encode_buffer(test, test, PAGE_SIZE, compressed,
PAGE_SIZE);
g_assert(dlen == 0);
g_free(test);
g_free(compressed);
}
static void test_encode_decode_1_byte(void)
{
uint8_t *buffer = g_malloc0(PAGE_SIZE);
uint8_t *test = g_malloc0(PAGE_SIZE);
uint8_t *compressed = g_malloc(PAGE_SIZE);
int dlen = 0, rc = 0;
uint8_t buf[2];
test[PAGE_SIZE - 1] = 1;
dlen = xbzrle_encode_buffer(buffer, test, PAGE_SIZE, compressed,
PAGE_SIZE);
g_assert(dlen == (uleb128_encode_small(&buf[0], 4095) + 2));
rc = xbzrle_decode_buffer(compressed, dlen, buffer, PAGE_SIZE);
g_assert(rc == PAGE_SIZE);
g_assert(memcmp(test, buffer, PAGE_SIZE) == 0);
g_free(buffer);
g_free(compressed);
g_free(test);
}
static void test_encode_decode_overflow(void)
{
uint8_t *compressed = g_malloc0(PAGE_SIZE);
uint8_t *test = g_malloc0(PAGE_SIZE);
uint8_t *buffer = g_malloc0(PAGE_SIZE);
int i = 0, rc = 0;
for (i = 0; i < PAGE_SIZE / 2 - 1; i++) {
test[i * 2] = 1;
}
/* encode overflow */
rc = xbzrle_encode_buffer(buffer, test, PAGE_SIZE, compressed,
PAGE_SIZE);
g_assert(rc == -1);
g_free(buffer);
g_free(compressed);
g_free(test);
}
static void encode_decode_range(void)
{
uint8_t *buffer = g_malloc0(PAGE_SIZE);
uint8_t *compressed = g_malloc(PAGE_SIZE);
uint8_t *test = g_malloc0(PAGE_SIZE);
int i = 0, rc = 0;
int dlen = 0;
int diff_len = g_test_rand_int_range(0, PAGE_SIZE - 1006);
for (i = diff_len; i > 0; i--) {
buffer[1000 + i] = i;
test[1000 + i] = i + 4;
}
buffer[1000 + diff_len + 3] = 103;
test[1000 + diff_len + 3] = 107;
buffer[1000 + diff_len + 5] = 105;
test[1000 + diff_len + 5] = 109;
/* test encode/decode */
dlen = xbzrle_encode_buffer(test, buffer, PAGE_SIZE, compressed,
PAGE_SIZE);
rc = xbzrle_decode_buffer(compressed, dlen, test, PAGE_SIZE);
g_assert(rc < PAGE_SIZE);
g_assert(memcmp(test, buffer, PAGE_SIZE) == 0);
g_free(buffer);
g_free(compressed);
g_free(test);
}
static void test_encode_decode(void)
{
int i;
for (i = 0; i < 10000; i++) {
encode_decode_range();
}
}
int main(int argc, char **argv)
{
g_test_init(&argc, &argv, NULL);
g_test_rand_int();
g_test_add_func("/xbzrle/uleb", test_uleb);
g_test_add_func("/xbzrle/encode_decode_zero", test_encode_decode_zero);
g_test_add_func("/xbzrle/encode_decode_unchanged",
test_encode_decode_unchanged);
g_test_add_func("/xbzrle/encode_decode_1_byte", test_encode_decode_1_byte);
g_test_add_func("/xbzrle/encode_decode_overflow",
test_encode_decode_overflow);
g_test_add_func("/xbzrle/encode_decode", test_encode_decode);
return g_test_run();
}
|
