138 lines
3.5 KiB
C++
138 lines
3.5 KiB
C++
/*
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* AsyncFile.cpp
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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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#include "fdbserver/workloads/workloads.actor.h"
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#include "flow/ActorCollection.h"
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#include "fdbserver/workloads/AsyncFile.actor.h"
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#include "flow/actorcompiler.h"
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// class RandomByteGenerator
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RandomByteGenerator::RandomByteGenerator(){
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BUF_SIZE = 16*(1<<20);
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b1 = new char[BUF_SIZE];
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for (int i=0;i<BUF_SIZE/sizeof(uint32_t);i++)
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((uint32_t*)b1)[i] = deterministicRandom()->randomUInt32();
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}
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RandomByteGenerator::~RandomByteGenerator(){
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delete b1;
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}
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// only works if buf and bytes are 8-byte aligned
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void RandomByteGenerator::writeRandomBytesToBuffer(void *buf, int bytes){
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ASSERT(bytes < BUF_SIZE-1);
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int o1, o2;
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o1 = deterministicRandom()->randomInt(0, BUF_SIZE-bytes) / 8;
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do {
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o2 = deterministicRandom()->randomInt(0, BUF_SIZE-bytes) / 8;
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} while (o1==o2);
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int64_t *out64 = (int64_t*)buf;
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int64_t *in64 = (int64_t*)b1;
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int n = bytes/8;
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for (int b=0;b<n;b++)
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out64[b] = in64[o1+b] ^ in64[o2+b];
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//for (int b=0;b<bytes;b++){
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//((char*)buf)[b] = b1[o1+b] ^ b1[o2+b];
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//}
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}
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//// Asynch File Workload
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const int AsyncFileWorkload::_PAGE_SIZE = 4096;
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AsyncFileWorkload::AsyncFileWorkload(WorkloadContext const& wcx)
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: TestWorkload(wcx), fileHandle(nullptr)
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{
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//Only run on one client
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enabled = clientId == 0;
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testDuration = getOption(options, LiteralStringRef("testDuration"), 10.0);
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unbufferedIO = getOption(options, LiteralStringRef("unbufferedIO"), false);
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uncachedIO = getOption(options, LiteralStringRef("uncachedIO"), false);
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fillRandom = getOption(options, LiteralStringRef("fillRandom"), false);
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path = getOption(options, LiteralStringRef("fileName"), LiteralStringRef("")).toString();
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}
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Reference<AsyncFileBuffer> AsyncFileWorkload::allocateBuffer(size_t size)
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{
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return makeReference<AsyncFileBuffer>(size, unbufferedIO);
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}
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Future<bool> AsyncFileWorkload::check(Database const& cx)
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{
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return true;
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}
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//Allocates a buffer of a given size. If necessary, the buffer will be aligned to 4K
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AsyncFileBuffer::AsyncFileBuffer(size_t size, bool aligned)
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{
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if(aligned)
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{
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#ifdef WIN32
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buffer = (unsigned char*)_aligned_malloc(size, AsyncFileWorkload::_PAGE_SIZE);
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#else
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if(posix_memalign((void**)&buffer, AsyncFileWorkload::_PAGE_SIZE, size) != 0)
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buffer = nullptr;
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#endif
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}
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else
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buffer = (unsigned char*)malloc(size);
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if(buffer == nullptr)
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{
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TraceEvent(SevError, "TestFailure").detail("Reason", "Insufficient memory");
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ASSERT(false);
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}
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memset(buffer, 0, size);
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this->aligned = aligned;
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}
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//Special logic needed here to work with _aligned_malloc on windows
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AsyncFileBuffer::~AsyncFileBuffer()
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{
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#ifdef WIN32
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if(aligned)
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{
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_aligned_free(buffer);
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return;
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}
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#endif
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free(buffer);
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}
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AsyncFileHandle::AsyncFileHandle(Reference<IAsyncFile> file, std::string path, bool temporary)
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{
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this->file = file;
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this->path = path;
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this->temporary = temporary;
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}
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AsyncFileHandle::~AsyncFileHandle()
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{
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if(temporary)
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deleteFile(path);
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}
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