cavis/libnd4j/tests_cpu/layers_tests/MmapTests.cpp

/*******************************************************************************
 * Copyright (c) 2015-2018 Skymind, Inc.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Apache License, Version 2.0 which is available at
 * https://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.
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 * SPDX-License-Identifier: Apache-2.0
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//
// Created by raver on 5/13/2018.
//

#include "testlayers.h"
#include <ops/declarable/CustomOperations.h>
#include <NDArray.h>
#include <NativeOps.h>
#include <fstream>

using namespace nd4j;
using namespace nd4j::graph;

class MmapTests : public testing::Test {
public:

};

TEST_F(MmapTests, Test_Basic_Mmap_1) {
    // FIXME: we must adopt this for CUDA as well
    if (!Environment::getInstance()->isCPU())
        return;

    // just 10GB
    Nd4jLong size = 100000L;

    std::ofstream ofs("file", std::ios::binary | std::ios::out);
    ofs.seekp(size + 1024L);
    ofs.write("", 1);
    ofs.close();

    auto result = mmapFile(nullptr, "file", size);

    ASSERT_FALSE(result == nullptr);

    munmapFile(nullptr, result, size);

    remove("file");
}