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