59 lines
1.2 KiB
C++
59 lines
1.2 KiB
C++
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// Copyright 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/files/memory_mapped_file.h"
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#include "base/files/file_path.h"
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#include "base/logging.h"
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namespace base {
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MemoryMappedFile::~MemoryMappedFile() {
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CloseHandles();
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}
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bool MemoryMappedFile::Initialize(const FilePath& file_name) {
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if (IsValid())
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return false;
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if (!MapFileToMemory(file_name)) {
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CloseHandles();
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return false;
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}
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return true;
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}
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bool MemoryMappedFile::Initialize(PlatformFile file) {
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if (IsValid())
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return false;
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file_ = file;
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if (!MapFileToMemoryInternal()) {
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CloseHandles();
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return false;
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}
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return true;
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}
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bool MemoryMappedFile::IsValid() const {
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return data_ != NULL;
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}
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bool MemoryMappedFile::MapFileToMemory(const FilePath& file_name) {
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file_ = CreatePlatformFile(file_name, PLATFORM_FILE_OPEN | PLATFORM_FILE_READ,
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NULL, NULL);
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if (file_ == kInvalidPlatformFileValue) {
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DLOG(ERROR) << "Couldn't open " << file_name.AsUTF8Unsafe();
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return false;
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}
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return MapFileToMemoryInternal();
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}
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} // namespace base
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