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
|
/*
* QEMU I/O channel test helpers
*
* Copyright (c) 2015 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
*/
#include "qemu/osdep.h"
#include "io-channel-helpers.h"
#include "qemu/iov.h"
struct QIOChannelTest {
QIOChannel *src;
QIOChannel *dst;
bool blocking;
size_t len;
size_t niov;
char *input;
struct iovec *inputv;
char *output;
struct iovec *outputv;
Error *writeerr;
Error *readerr;
};
/* This thread sends all data using iovecs */
static gpointer test_io_thread_writer(gpointer opaque)
{
QIOChannelTest *data = opaque;
qio_channel_set_blocking(data->src, data->blocking, NULL);
qio_channel_writev_all(data->src,
data->inputv,
data->niov,
&data->writeerr);
return NULL;
}
/* This thread receives all data using iovecs */
static gpointer test_io_thread_reader(gpointer opaque)
{
QIOChannelTest *data = opaque;
qio_channel_set_blocking(data->dst, data->blocking, NULL);
qio_channel_readv_all(data->dst,
data->outputv,
data->niov,
&data->readerr);
return NULL;
}
QIOChannelTest *qio_channel_test_new(void)
{
QIOChannelTest *data = g_new0(QIOChannelTest, 1);
size_t i;
size_t offset;
/* We'll send 1 MB of data */
#define CHUNK_COUNT 250
#define CHUNK_LEN 4194
data->len = CHUNK_COUNT * CHUNK_LEN;
data->input = g_new0(char, data->len);
data->output = g_new0(gchar, data->len);
/* Fill input with a pattern */
for (i = 0; i < data->len; i += CHUNK_LEN) {
memset(data->input + i, (i / CHUNK_LEN), CHUNK_LEN);
}
/* We'll split the data across a bunch of IO vecs */
data->niov = CHUNK_COUNT;
data->inputv = g_new0(struct iovec, data->niov);
data->outputv = g_new0(struct iovec, data->niov);
for (i = 0, offset = 0; i < data->niov; i++, offset += CHUNK_LEN) {
data->inputv[i].iov_base = data->input + offset;
data->outputv[i].iov_base = data->output + offset;
data->inputv[i].iov_len = CHUNK_LEN;
data->outputv[i].iov_len = CHUNK_LEN;
}
return data;
}
void qio_channel_test_run_threads(QIOChannelTest *test,
bool blocking,
QIOChannel *src,
QIOChannel *dst)
{
GThread *reader, *writer;
test->src = src;
test->dst = dst;
test->blocking = blocking;
reader = g_thread_new("reader",
test_io_thread_reader,
test);
writer = g_thread_new("writer",
test_io_thread_writer,
test);
g_thread_join(reader);
g_thread_join(writer);
test->dst = test->src = NULL;
}
void qio_channel_test_run_writer(QIOChannelTest *test,
QIOChannel *src)
{
test->src = src;
test_io_thread_writer(test);
test->src = NULL;
}
void qio_channel_test_run_reader(QIOChannelTest *test,
QIOChannel *dst)
{
test->dst = dst;
test_io_thread_reader(test);
test->dst = NULL;
}
void qio_channel_test_validate(QIOChannelTest *test)
{
g_assert(test->readerr == NULL);
g_assert(test->writeerr == NULL);
g_assert_cmpint(memcmp(test->input,
test->output,
test->len), ==, 0);
g_free(test->inputv);
g_free(test->outputv);
g_free(test->input);
g_free(test->output);
g_free(test);
}
|
