Daniel P. Berrange | 559607e | 2015-02-27 16:19:33 +0000 | [diff] [blame] | 1 | /* |
| 2 | * QEMU I/O channel test helpers |
| 3 | * |
| 4 | * Copyright (c) 2015 Red Hat, Inc. |
| 5 | * |
| 6 | * This library is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * This library is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
| 18 | * |
| 19 | */ |
| 20 | |
Peter Maydell | 681c28a | 2016-02-08 18:08:51 +0000 | [diff] [blame] | 21 | #include "qemu/osdep.h" |
Daniel P. Berrange | 559607e | 2015-02-27 16:19:33 +0000 | [diff] [blame] | 22 | #include "io-channel-helpers.h" |
Daniel P. Berrange | d4622e5 | 2017-08-30 14:53:59 +0100 | [diff] [blame] | 23 | #include "qemu/iov.h" |
Daniel P. Berrange | 559607e | 2015-02-27 16:19:33 +0000 | [diff] [blame] | 24 | |
| 25 | struct QIOChannelTest { |
| 26 | QIOChannel *src; |
| 27 | QIOChannel *dst; |
| 28 | bool blocking; |
| 29 | size_t len; |
| 30 | size_t niov; |
| 31 | char *input; |
| 32 | struct iovec *inputv; |
| 33 | char *output; |
| 34 | struct iovec *outputv; |
| 35 | Error *writeerr; |
| 36 | Error *readerr; |
| 37 | }; |
| 38 | |
| 39 | |
Daniel P. Berrange | 559607e | 2015-02-27 16:19:33 +0000 | [diff] [blame] | 40 | /* This thread sends all data using iovecs */ |
| 41 | static gpointer test_io_thread_writer(gpointer opaque) |
| 42 | { |
| 43 | QIOChannelTest *data = opaque; |
Daniel P. Berrange | 559607e | 2015-02-27 16:19:33 +0000 | [diff] [blame] | 44 | |
| 45 | qio_channel_set_blocking(data->src, data->blocking, NULL); |
| 46 | |
Daniel P. Berrange | d4622e5 | 2017-08-30 14:53:59 +0100 | [diff] [blame] | 47 | qio_channel_writev_all(data->src, |
| 48 | data->inputv, |
| 49 | data->niov, |
| 50 | &data->writeerr); |
Daniel P. Berrange | 559607e | 2015-02-27 16:19:33 +0000 | [diff] [blame] | 51 | |
| 52 | return NULL; |
| 53 | } |
| 54 | |
| 55 | |
| 56 | /* This thread receives all data using iovecs */ |
| 57 | static gpointer test_io_thread_reader(gpointer opaque) |
| 58 | { |
| 59 | QIOChannelTest *data = opaque; |
Daniel P. Berrange | 559607e | 2015-02-27 16:19:33 +0000 | [diff] [blame] | 60 | |
| 61 | qio_channel_set_blocking(data->dst, data->blocking, NULL); |
| 62 | |
Daniel P. Berrange | d4622e5 | 2017-08-30 14:53:59 +0100 | [diff] [blame] | 63 | qio_channel_readv_all(data->dst, |
| 64 | data->outputv, |
| 65 | data->niov, |
| 66 | &data->readerr); |
Daniel P. Berrange | 559607e | 2015-02-27 16:19:33 +0000 | [diff] [blame] | 67 | |
| 68 | return NULL; |
| 69 | } |
| 70 | |
| 71 | |
| 72 | QIOChannelTest *qio_channel_test_new(void) |
| 73 | { |
| 74 | QIOChannelTest *data = g_new0(QIOChannelTest, 1); |
| 75 | size_t i; |
| 76 | size_t offset; |
| 77 | |
| 78 | |
| 79 | /* We'll send 1 MB of data */ |
| 80 | #define CHUNK_COUNT 250 |
| 81 | #define CHUNK_LEN 4194 |
| 82 | |
| 83 | data->len = CHUNK_COUNT * CHUNK_LEN; |
| 84 | data->input = g_new0(char, data->len); |
| 85 | data->output = g_new0(gchar, data->len); |
| 86 | |
| 87 | /* Fill input with a pattern */ |
| 88 | for (i = 0; i < data->len; i += CHUNK_LEN) { |
| 89 | memset(data->input + i, (i / CHUNK_LEN), CHUNK_LEN); |
| 90 | } |
| 91 | |
| 92 | /* We'll split the data across a bunch of IO vecs */ |
| 93 | data->niov = CHUNK_COUNT; |
| 94 | data->inputv = g_new0(struct iovec, data->niov); |
| 95 | data->outputv = g_new0(struct iovec, data->niov); |
| 96 | |
| 97 | for (i = 0, offset = 0; i < data->niov; i++, offset += CHUNK_LEN) { |
| 98 | data->inputv[i].iov_base = data->input + offset; |
| 99 | data->outputv[i].iov_base = data->output + offset; |
| 100 | data->inputv[i].iov_len = CHUNK_LEN; |
| 101 | data->outputv[i].iov_len = CHUNK_LEN; |
| 102 | } |
| 103 | |
| 104 | return data; |
| 105 | } |
| 106 | |
| 107 | void qio_channel_test_run_threads(QIOChannelTest *test, |
| 108 | bool blocking, |
| 109 | QIOChannel *src, |
| 110 | QIOChannel *dst) |
| 111 | { |
| 112 | GThread *reader, *writer; |
| 113 | |
| 114 | test->src = src; |
| 115 | test->dst = dst; |
| 116 | test->blocking = blocking; |
| 117 | |
| 118 | reader = g_thread_new("reader", |
| 119 | test_io_thread_reader, |
| 120 | test); |
| 121 | writer = g_thread_new("writer", |
| 122 | test_io_thread_writer, |
| 123 | test); |
| 124 | |
| 125 | g_thread_join(reader); |
| 126 | g_thread_join(writer); |
| 127 | |
| 128 | test->dst = test->src = NULL; |
| 129 | } |
| 130 | |
| 131 | |
| 132 | void qio_channel_test_run_writer(QIOChannelTest *test, |
| 133 | QIOChannel *src) |
| 134 | { |
| 135 | test->src = src; |
| 136 | test_io_thread_writer(test); |
| 137 | test->src = NULL; |
| 138 | } |
| 139 | |
| 140 | |
| 141 | void qio_channel_test_run_reader(QIOChannelTest *test, |
| 142 | QIOChannel *dst) |
| 143 | { |
| 144 | test->dst = dst; |
| 145 | test_io_thread_reader(test); |
| 146 | test->dst = NULL; |
| 147 | } |
| 148 | |
| 149 | |
| 150 | void qio_channel_test_validate(QIOChannelTest *test) |
| 151 | { |
Daniel P. Berrange | 294bbbb | 2016-03-08 15:37:29 +0000 | [diff] [blame] | 152 | g_assert(test->readerr == NULL); |
| 153 | g_assert(test->writeerr == NULL); |
Daniel P. Berrange | 559607e | 2015-02-27 16:19:33 +0000 | [diff] [blame] | 154 | g_assert_cmpint(memcmp(test->input, |
| 155 | test->output, |
| 156 | test->len), ==, 0); |
Daniel P. Berrange | 559607e | 2015-02-27 16:19:33 +0000 | [diff] [blame] | 157 | |
| 158 | g_free(test->inputv); |
| 159 | g_free(test->outputv); |
| 160 | g_free(test->input); |
| 161 | g_free(test->output); |
| 162 | g_free(test); |
| 163 | } |