fileiotest.cc

/*
 * This file is open source software, licensed to you under the terms
 * of the Apache License, Version 2.0 (the "License").  See the NOTICE file
 * distributed with this work for additional information regarding copyright
 * ownership.  You may not use this file except in compliance with the License.
 *
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
/*
 * Copyright (C) 2014-2015 Cloudius Systems, Ltd.
 */

#include "tests/test-utils.hh"

#include "core/semaphore.hh"
#include "core/file.hh"
#include "core/reactor.hh"

using namespace seastar;

struct file_test {
    file_test(file&& f) : f(std::move(f)) {}
    file f;
    semaphore sem = { 0 };
    semaphore par = { 1000 };
};

SEASTAR_TEST_CASE(test1) {
    // Note: this tests generates a file "testfile.tmp" with size 4096 * max (= 40 MB).
    static constexpr auto max = 10000;
    return open_file_dma("testfile.tmp", open_flags::rw | open_flags::create).then([] (file f) {
        auto ft = new file_test{std::move(f)};
        for (size_t i = 0; i < max; ++i) {
            ft->par.wait().then([ft, i] {
                auto wbuf = allocate_aligned_buffer<unsigned char>(4096, 4096);
                std::fill(wbuf.get(), wbuf.get() + 4096, i);
                auto wb = wbuf.get();
                ft->f.dma_write(i * 4096, wb, 4096).then(
                        [ft, i, wbuf = std::move(wbuf)] (size_t ret) mutable {
                    BOOST_REQUIRE(ret == 4096);
                    auto rbuf = allocate_aligned_buffer<unsigned char>(4096, 4096);
                    auto rb = rbuf.get();
                    ft->f.dma_read(i * 4096, rb, 4096).then(
                            [ft, rbuf = std::move(rbuf), wbuf = std::move(wbuf)] (size_t ret) mutable {
                        BOOST_REQUIRE(ret == 4096);
                        BOOST_REQUIRE(std::equal(rbuf.get(), rbuf.get() + 4096, wbuf.get()));
                        ft->sem.signal(1);
                        ft->par.signal();
                    });
                });
            });
        }
        return ft->sem.wait(max).then([ft] () mutable {
            return ft->f.flush();
        }).then([ft] {
            return ft->f.close();
        }).then([ft] () mutable {
            std::cout << "done\n";
            delete ft;
        });
    });
}