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