Index: net/disk_cache/flash/cache_entry.cc |
diff --git a/net/disk_cache/flash/cache_entry.cc b/net/disk_cache/flash/cache_entry.cc |
deleted file mode 100644 |
index f06362927a5edacb3a38e1473d87a4b7cecb9b95..0000000000000000000000000000000000000000 |
--- a/net/disk_cache/flash/cache_entry.cc |
+++ /dev/null |
@@ -1,162 +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 "base/logging.h" |
-#include "net/base/io_buffer.h" |
-#include "net/base/net_errors.h" |
-#include "net/disk_cache/flash/cache_entry.h" |
-#include "net/disk_cache/flash/format.h" |
-#include "net/disk_cache/flash/log_structured_store.h" |
- |
-namespace disk_cache { |
- |
-CacheEntry::CacheEntry(LogStructuredStore* store) |
- : store_(store), id_(-1), init_(false), closed_(false) { |
- DCHECK(store); |
-} |
- |
-CacheEntry::CacheEntry(LogStructuredStore* store, int32 id) |
- : store_(store), id_(id), init_(false), closed_(false) { |
- DCHECK(store); |
-} |
- |
-CacheEntry::~CacheEntry() { |
- DCHECK(!init_ || closed_); |
-} |
- |
-bool CacheEntry::Init() { |
- DCHECK(!init_); |
- if (!OnDisk()) { |
- init_ = true; |
- return true; |
- } |
- |
- int32 stream_sizes[kFlashCacheEntryNumStreams]; |
- COMPILE_ASSERT(sizeof(stream_sizes) == kFlashCacheEntryHeaderSize, |
- invalid_cache_entry_header_size); |
- |
- if (!store_->OpenEntry(id_) || |
- !store_->ReadData(id_, stream_sizes, kFlashCacheEntryHeaderSize, 0)) { |
- return false; |
- } |
- for (int i = 0, offset = kFlashCacheEntryHeaderSize; |
- i < kFlashCacheEntryNumStreams; ++i) { |
- streams_[i].offset = offset; |
- streams_[i].size = stream_sizes[i]; |
- offset += stream_sizes[i]; |
- } |
- init_ = true; |
- return true; |
-} |
- |
-bool CacheEntry::Close() { |
- DCHECK(init_ && !closed_); |
- if (OnDisk()) |
- store_->CloseEntry(id_); |
- else if (!Save()) |
- return false; |
- closed_ = true; |
- return true; |
-} |
- |
-int32 CacheEntry::id() const { |
- DCHECK(init_); |
- return id_; |
-} |
- |
-int32 CacheEntry::GetDataSize(int index) const { |
- DCHECK(init_); |
- return InvalidStream(index) ? 0 : streams_[index].size; |
-} |
- |
-int CacheEntry::ReadData(int index, int offset, net::IOBuffer* buf, |
- int buf_len) { |
- DCHECK(init_); |
- if (InvalidStream(index)) |
- return net::ERR_INVALID_ARGUMENT; |
- |
- int stream_size = streams_[index].size; |
- if (offset >= stream_size || offset < 0 || buf_len == 0) |
- return 0; |
- if (offset + buf_len > stream_size) |
- buf_len = stream_size - offset; |
- |
- if (OnDisk()) { |
- offset += streams_[index].offset; |
- if (store_->ReadData(id_, buf->data(), buf_len, offset)) |
- return buf_len; |
- return net::ERR_FAILED; |
- } |
- memcpy(buf->data(), &streams_[index].write_buffer[offset], buf_len); |
- return buf_len; |
-} |
- |
-int CacheEntry::WriteData(int index, int offset, net::IOBuffer* buf, |
- int buf_len) { |
- DCHECK(init_ && !closed_); |
- if (InvalidStream(index)) |
- return net::ERR_INVALID_ARGUMENT; |
- |
- DCHECK(offset >= 0 && buf_len >= 0); |
- Stream& stream = streams_[index]; |
- size_t new_size = static_cast<size_t>(offset + buf_len); |
- if (new_size) { |
- // TODO(agayev): Currently, only append and overwrite is supported. Add |
- // support for arbitrary writes. |
- DCHECK(!offset || offset == stream.size); |
- if (stream.write_buffer.size() < new_size) |
- stream.write_buffer.resize(new_size); |
- memcpy(&streams_[index].write_buffer[offset], buf->data(), buf_len); |
- } |
- stream.size = new_size; |
- return buf_len; |
-} |
- |
-bool CacheEntry::OnDisk() const { |
- return id_ != -1; |
-} |
- |
-bool CacheEntry::InvalidStream(int stream_index) const { |
- return stream_index < 0 || stream_index >= kFlashCacheEntryNumStreams; |
-} |
- |
-int32 CacheEntry::Size() const { |
- DCHECK(init_); |
- int32 size = kFlashCacheEntryHeaderSize; |
- for (int i = 0; i < kFlashCacheEntryNumStreams; ++i) |
- size += streams_[i].size; |
- DCHECK(size > 0 && size <= kFlashSegmentFreeSpace); |
- return size; |
-} |
- |
-bool CacheEntry::Save() { |
- DCHECK(init_ && !closed_ && !OnDisk()); |
- int32 stream_sizes[kFlashCacheEntryNumStreams]; |
- COMPILE_ASSERT(sizeof(stream_sizes) == kFlashCacheEntryHeaderSize, |
- invalid_cache_entry_header_size); |
- |
- for (int i = 0; i < kFlashCacheEntryNumStreams; ++i) |
- stream_sizes[i] = streams_[i].size; |
- |
- if (!store_->CreateEntry(Size(), &id_)) |
- return false; |
- if (!store_->WriteData(stream_sizes, kFlashCacheEntryHeaderSize)) |
- return false; |
- for (int i = 0; i < kFlashCacheEntryNumStreams; ++i) { |
- if (streams_[i].size > 0 && |
- !store_->WriteData(&streams_[i].write_buffer[0], streams_[i].size)) { |
- return false; |
- } |
- } |
- store_->CloseEntry(id_); |
- return true; |
-} |
- |
-CacheEntry::Stream::Stream() : offset(0), size(0) { |
-} |
- |
-CacheEntry::Stream::~Stream() { |
-} |
- |
-} // namespace disk_cache |