155 lines
4.8 KiB
C++
155 lines
4.8 KiB
C++
/*
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* AsyncFile.actor.h
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*
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* This source file is part of the FoundationDB open source project
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*
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* Copyright 2013-2018 Apple Inc. and the FoundationDB project authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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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, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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// When actually compiled (NO_INTELLISENSE), include the generated version of this file. In intellisense use the source
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// version.
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#if defined(NO_INTELLISENSE) && !defined(WORKLOADS_ASYNCFILE_ACTOR_G_H)
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#define WORKLOADS_ASYNCFILE_ACTOR_G_H
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#include "fdbserver/workloads/AsyncFile.actor.g.h"
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#elif !defined(WORKLOADS_ASYNCFILE_ACTOR_H)
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#define WORKLOADS_ASYNCFILE_ACTOR_H
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#include "fdbserver/workloads/workloads.actor.h"
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#include "fdbrpc/IAsyncFile.h"
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#include "flow/actorcompiler.h" // This must be the last #include.
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class RandomByteGenerator {
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private:
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char* b1;
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int BUF_SIZE;
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public:
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RandomByteGenerator();
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~RandomByteGenerator();
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void writeRandomBytesToBuffer(void* buf, int bytes);
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};
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struct AsyncFileBuffer : public ReferenceCounted<AsyncFileBuffer> {
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AsyncFileBuffer(size_t size, bool aligned);
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virtual ~AsyncFileBuffer();
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unsigned char* buffer;
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bool aligned;
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};
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struct AsyncFileHandle : public ReferenceCounted<AsyncFileHandle> {
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AsyncFileHandle(Reference<IAsyncFile> file, std::string path, bool temporary);
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virtual ~AsyncFileHandle();
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Reference<IAsyncFile> file;
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std::string path;
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bool temporary;
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};
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struct AsyncFileWorkload : TestWorkload {
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static const int _PAGE_SIZE;
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// If true, then the underlying AsyncFile will be assumed to be performing unbuffered IO, which requires special
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// alignments
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bool unbufferedIO;
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bool uncachedIO;
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bool fillRandom;
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bool enabled;
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double testDuration;
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Reference<AsyncFileHandle> fileHandle;
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int64_t fileSize;
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std::string path;
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AsyncFileWorkload(WorkloadContext const&);
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~AsyncFileWorkload() override {}
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// Allocates a buffer of a given size. If necessary, the buffer will be aligned to 4K
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Reference<AsyncFileBuffer> allocateBuffer(size_t size);
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Future<bool> check(Database const& cx) override;
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// Opens a file for AsyncFile operations. If the path is empty, then creates a file and fills it with random data
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ACTOR Future<Void> openFile(AsyncFileWorkload* self,
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int64_t flags,
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int64_t mode,
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uint64_t size,
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bool fillFile = false) {
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state RandomByteGenerator rbg;
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if (self->fileHandle.getPtr() != nullptr) {
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self->fileHandle->file = Reference<IAsyncFile>(nullptr);
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wait(delay(0.1));
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}
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state bool fileCreated = self->path.length() == 0;
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if (fileCreated) {
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self->path = "asyncfile." + deterministicRandom()->randomUniqueID().toString();
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flags &= ~IAsyncFile::OPEN_READONLY;
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flags |= IAsyncFile::OPEN_READWRITE | IAsyncFile::OPEN_CREATE;
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} else if (fillFile) {
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flags &= ~IAsyncFile::OPEN_READONLY;
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flags |= IAsyncFile::OPEN_READWRITE;
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}
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if (self->unbufferedIO)
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flags |= IAsyncFile::OPEN_UNBUFFERED;
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if (self->uncachedIO)
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flags |= IAsyncFile::OPEN_UNCACHED;
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try {
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state Reference<IAsyncFile> file = wait(IAsyncFileSystem::filesystem()->open(self->path, flags, 0666));
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if (self->fileHandle.getPtr() == nullptr)
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self->fileHandle = makeReference<AsyncFileHandle>(file, self->path, fileCreated);
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else
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self->fileHandle->file = file;
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if (fileCreated || fillFile) {
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state int64_t oldSize = wait(file->size());
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state int64_t newSize = (size + _PAGE_SIZE - 1) & ~(int64_t(_PAGE_SIZE - 1)); // align size up
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if (!fileCreated)
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wait(file->truncate(newSize));
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state int chunkSize = 4 << 16;
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state Reference<AsyncFileBuffer> data = self->allocateBuffer(chunkSize);
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state int64_t i;
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state Future<Void> lastWrite = Void();
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for (i = oldSize & ~(chunkSize - 1); i < newSize; i += chunkSize) {
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if (i >> 30 != (i + (chunkSize)) >> 30) // each GB
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printf("Building test file: %d GB\n", int((i + (chunkSize)) >> 30));
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if (self->fillRandom)
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rbg.writeRandomBytesToBuffer(data->buffer, chunkSize);
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auto w = lastWrite;
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lastWrite = file->write(data->buffer, chunkSize, i);
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wait(w);
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}
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wait(lastWrite);
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}
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} catch (Error& error) {
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TraceEvent(SevError, "TestFailure").detail("Reason", "Could not open file");
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throw;
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}
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return Void();
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}
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};
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#include "flow/unactorcompiler.h"
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#endif
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