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94 lines
2.5 KiB
94 lines
2.5 KiB
// Copyright 2019 The SwiftShader Authors. All Rights Reserved.
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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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#include "System/Memory.hpp"
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#ifdef __linux__
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# include "System/Linux/MemFd.hpp"
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#endif
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#include <gmock/gmock.h>
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#include <gtest/gtest.h>
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#include <cstdlib>
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using namespace sw;
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#ifdef __linux__
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TEST(MemFd, DefaultConstructor)
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{
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LinuxMemFd memfd;
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ASSERT_FALSE(memfd.isValid());
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ASSERT_EQ(-1, memfd.exportFd());
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}
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TEST(MemFd, AllocatingConstructor)
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{
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const size_t kRegionSize = sw::memoryPageSize() * 8;
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LinuxMemFd memfd("test-region", kRegionSize);
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ASSERT_TRUE(memfd.isValid());
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ASSERT_GE(memfd.fd(), 0);
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void *addr = memfd.mapReadWrite(0, kRegionSize);
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ASSERT_TRUE(addr);
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memfd.unmap(addr, kRegionSize);
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}
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TEST(MemFd, ExplicitAllocation)
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{
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const size_t kRegionSize = sw::memoryPageSize() * 8;
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LinuxMemFd memfd;
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ASSERT_FALSE(memfd.isValid());
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ASSERT_EQ(-1, memfd.exportFd());
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ASSERT_TRUE(memfd.allocate("test-region", kRegionSize));
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ASSERT_TRUE(memfd.isValid());
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}
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TEST(MemFd, Close)
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{
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const size_t kRegionSize = sw::memoryPageSize() * 8;
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LinuxMemFd memfd("test-region", kRegionSize);
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ASSERT_TRUE(memfd.isValid());
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int fd = memfd.exportFd();
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memfd.close();
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ASSERT_FALSE(memfd.isValid());
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ASSERT_EQ(-1, memfd.exportFd());
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::close(fd);
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}
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TEST(MemFd, ExportImportFd)
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{
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const size_t kRegionSize = sw::memoryPageSize() * 8;
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LinuxMemFd memfd("test-region1", kRegionSize);
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auto *addr = reinterpret_cast<uint8_t *>(memfd.mapReadWrite(0, kRegionSize));
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ASSERT_TRUE(addr);
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for(size_t n = 0; n < kRegionSize; ++n)
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{
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addr[n] = static_cast<uint8_t>(n);
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}
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int fd = memfd.exportFd();
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ASSERT_TRUE(memfd.unmap(addr, kRegionSize));
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memfd.close();
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LinuxMemFd memfd2;
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memfd2.importFd(fd);
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ASSERT_TRUE(memfd2.isValid());
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addr = reinterpret_cast<uint8_t *>(memfd2.mapReadWrite(0, kRegionSize));
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ASSERT_TRUE(addr);
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for(size_t n = 0; n < kRegionSize; ++n)
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{
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ASSERT_EQ(addr[n], static_cast<uint8_t>(n)) << "# " << n;
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}
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ASSERT_TRUE(memfd2.unmap(addr, kRegionSize));
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}
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#endif // __linux__
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