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https://github.com/scylladb/scylladb.git
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70 lines
2.4 KiB
C++
70 lines
2.4 KiB
C++
/*
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* This file is open source software, licensed to you under the terms
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* of the Apache License, Version 2.0 (the "License"). See the NOTICE file
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* distributed with this work for additional information regarding copyright
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* ownership. You may not use this file except in compliance with the License.
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*
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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/*
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* Copyright (C) 2014 Cloudius Systems, Ltd.
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*/
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#include <algorithm>
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#include "core/reactor.hh"
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struct file_test {
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file_test(file&& f) : f(std::move(f)) {}
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file f;
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semaphore sem = { 0 };
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semaphore par = { 1000 };
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};
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int main(int ac, char** av) {
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static constexpr auto max = 10000;
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engine().open_file_dma("testfile.tmp").then([] (file f) {
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auto ft = new file_test{std::move(f)};
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for (size_t i = 0; i < max; ++i) {
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ft->par.wait().then([ft, i] {
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auto wbuf = allocate_aligned_buffer<unsigned char>(4096, 4096);
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std::fill(wbuf.get(), wbuf.get() + 4096, i);
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auto wb = wbuf.get();
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ft->f.dma_write(i * 4096, wb, 4096).then(
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[ft, i, wbuf = std::move(wbuf)] (size_t ret) mutable {
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assert(ret == 4096);
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auto rbuf = allocate_aligned_buffer<unsigned char>(4096, 4096);
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auto rb = rbuf.get();
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ft->f.dma_read(i * 4096, rb, 4096).then(
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[ft, i, rbuf = std::move(rbuf), wbuf = std::move(wbuf)] (size_t ret) mutable {
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assert(ret == 4096);
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bool eq = std::equal(rbuf.get(), rbuf.get() + 4096, wbuf.get());
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assert(eq);
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ft->sem.signal(1);
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ft->par.signal();
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});
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});
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});
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}
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ft->sem.wait(max).then([ft] () mutable {
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return ft->f.flush();
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}).then([ft] () mutable {
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std::cout << "done\n";
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delete ft;
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::exit(0);
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});
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});
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engine().run();
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return 0;
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}
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