Index: base/files/memory_mapped_file_win.cc |
diff --git a/base/files/memory_mapped_file_win.cc b/base/files/memory_mapped_file_win.cc |
deleted file mode 100644 |
index 4e7e934e1c858823f13a2c7842a1daa0e390591b..0000000000000000000000000000000000000000 |
--- a/base/files/memory_mapped_file_win.cc |
+++ /dev/null |
@@ -1,92 +0,0 @@ |
-// 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/strings/string16.h" |
-#include "base/threading/thread_restrictions.h" |
- |
-namespace base { |
- |
-MemoryMappedFile::MemoryMappedFile() : data_(NULL), length_(0), image_(false) { |
-} |
- |
-bool MemoryMappedFile::InitializeAsImageSection(const FilePath& file_name) { |
- image_ = true; |
- return Initialize(file_name); |
-} |
- |
-bool MemoryMappedFile::MapFileRegionToMemory( |
- const MemoryMappedFile::Region& region) { |
- ThreadRestrictions::AssertIOAllowed(); |
- |
- if (!file_.IsValid()) |
- return false; |
- |
- int flags = image_ ? SEC_IMAGE | PAGE_READONLY : PAGE_READONLY; |
- |
- file_mapping_.Set(::CreateFileMapping(file_.GetPlatformFile(), NULL, |
- flags, 0, 0, NULL)); |
- if (!file_mapping_.IsValid()) |
- return false; |
- |
- LARGE_INTEGER map_start = {0}; |
- SIZE_T map_size = 0; |
- int32 data_offset = 0; |
- |
- if (region == MemoryMappedFile::Region::kWholeFile) { |
- int64 file_len = file_.GetLength(); |
- if (file_len <= 0 || file_len > kint32max) |
- return false; |
- length_ = static_cast<size_t>(file_len); |
- } else { |
- // The region can be arbitrarily aligned. MapViewOfFile, instead, requires |
- // that the start address is aligned to the VM granularity (which is |
- // typically larger than a page size, for instance 32k). |
- // Also, conversely to POSIX's mmap, the |map_size| doesn't have to be |
- // aligned and must be less than or equal the mapped file size. |
- // We map here the outer region [|aligned_start|, |aligned_start+size|] |
- // which contains |region| and then add up the |data_offset| displacement. |
- int64 aligned_start = 0; |
- int64 ignored = 0; |
- CalculateVMAlignedBoundaries( |
- region.offset, region.size, &aligned_start, &ignored, &data_offset); |
- int64 size = region.size + data_offset; |
- |
- // Ensure that the casts below in the MapViewOfFile call are sane. |
- if (aligned_start < 0 || size < 0 || |
- static_cast<uint64>(size) > std::numeric_limits<SIZE_T>::max()) { |
- DLOG(ERROR) << "Region bounds are not valid for MapViewOfFile"; |
- return false; |
- } |
- map_start.QuadPart = aligned_start; |
- map_size = static_cast<SIZE_T>(size); |
- length_ = static_cast<size_t>(region.size); |
- } |
- |
- data_ = static_cast<uint8*>(::MapViewOfFile(file_mapping_.Get(), |
- FILE_MAP_READ, |
- map_start.HighPart, |
- map_start.LowPart, |
- map_size)); |
- if (data_ == NULL) |
- return false; |
- data_ += data_offset; |
- return true; |
-} |
- |
-void MemoryMappedFile::CloseHandles() { |
- if (data_) |
- ::UnmapViewOfFile(data_); |
- if (file_mapping_.IsValid()) |
- file_mapping_.Close(); |
- if (file_.IsValid()) |
- file_.Close(); |
- |
- data_ = NULL; |
- length_ = 0; |
-} |
- |
-} // namespace base |