Index: net/disk_cache/blockfile/mapped_file_avoid_mmap_posix.cc |
diff --git a/net/disk_cache/blockfile/mapped_file_avoid_mmap_posix.cc b/net/disk_cache/blockfile/mapped_file_avoid_mmap_posix.cc |
deleted file mode 100644 |
index 3936358236dd37d787ff9396fd6fc2e218da7b91..0000000000000000000000000000000000000000 |
--- a/net/disk_cache/blockfile/mapped_file_avoid_mmap_posix.cc |
+++ /dev/null |
@@ -1,63 +0,0 @@ |
-// Copyright (c) 2012 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 "net/disk_cache/blockfile/mapped_file.h" |
- |
-#include <stdlib.h> |
- |
-#include "base/files/file_path.h" |
-#include "base/logging.h" |
- |
-namespace disk_cache { |
- |
-void* MappedFile::Init(const base::FilePath& name, size_t size) { |
- DCHECK(!init_); |
- if (init_ || !File::Init(name)) |
- return NULL; |
- |
- if (!size) |
- size = GetLength(); |
- |
- buffer_ = malloc(size); |
- snapshot_ = malloc(size); |
- if (buffer_ && snapshot_ && Read(buffer_, size, 0)) { |
- memcpy(snapshot_, buffer_, size); |
- } else { |
- free(buffer_); |
- free(snapshot_); |
- buffer_ = snapshot_ = 0; |
- } |
- |
- init_ = true; |
- view_size_ = size; |
- return buffer_; |
-} |
- |
-void MappedFile::Flush() { |
- DCHECK(buffer_); |
- DCHECK(snapshot_); |
- const char* buffer_ptr = static_cast<const char*>(buffer_); |
- char* snapshot_ptr = static_cast<char*>(snapshot_); |
- const size_t block_size = 4096; |
- for (size_t offset = 0; offset < view_size_; offset += block_size) { |
- size_t size = std::min(view_size_ - offset, block_size); |
- if (memcmp(snapshot_ptr + offset, buffer_ptr + offset, size)) { |
- memcpy(snapshot_ptr + offset, buffer_ptr + offset, size); |
- Write(snapshot_ptr + offset, size, offset); |
- } |
- } |
-} |
- |
-MappedFile::~MappedFile() { |
- if (!init_) |
- return; |
- |
- if (buffer_ && snapshot_) { |
- Flush(); |
- } |
- free(buffer_); |
- free(snapshot_); |
-} |
- |
-} // namespace disk_cache |