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Diffstat (limited to 'chromium/content/browser/download/parallel_download_utils.h')
| -rw-r--r-- | chromium/content/browser/download/parallel_download_utils.h | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/chromium/content/browser/download/parallel_download_utils.h b/chromium/content/browser/download/parallel_download_utils.h deleted file mode 100644 index 63b36a27cde..00000000000 --- a/chromium/content/browser/download/parallel_download_utils.h +++ /dev/null @@ -1,102 +0,0 @@ -// Copyright 2017 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. - -#ifndef CONTENT_BROWSER_DOWNLOAD_PARALLEL_DOWNLOAD_UTILS_H_ -#define CONTENT_BROWSER_DOWNLOAD_PARALLEL_DOWNLOAD_UTILS_H_ - -#include <vector> - -#include "components/download/public/common/download_create_info.h" -#include "components/download/public/common/download_item.h" -#include "content/browser/download/download_file_impl.h" -#include "content/common/content_export.h" - -namespace content { - -// Finch parameter key value to enable parallel download. Used in enabled -// experiment group that needs other parameters, such as min_slice_size, but -// don't want to actually do parallel download. -constexpr char kEnableParallelDownloadFinchKey[] = "enable_parallel_download"; - -// Finch parameter key value for minimum slice size in bytes to use parallel -// download. -constexpr char kMinSliceSizeFinchKey[] = "min_slice_size"; - -// Finch parameter key value for number of parallel requests in a parallel -// download, including the original request. -constexpr char kParallelRequestCountFinchKey[] = "request_count"; - -// Finch parameter key value for the delay time in milliseconds to send -// parallel requests after response of the original request is handled. -constexpr char kParallelRequestDelayFinchKey[] = "parallel_request_delay"; - -// Finch parameter key value for the remaining time in seconds that is required -// to send parallel requests. -constexpr char kParallelRequestRemainingTimeFinchKey[] = - "parallel_request_remaining_time"; - -// Chunks the content that starts from |current_offset|, into at most -// std::max(|request_count|, 1) smaller slices. -// Each slice contains at least |min_slice_size| bytes unless |total_length| -// is less than |min_slice_size|. -// The last slice is half opened. -CONTENT_EXPORT std::vector<download::DownloadItem::ReceivedSlice> -FindSlicesForRemainingContent(int64_t current_offset, - int64_t total_length, - int request_count, - int64_t min_slice_size); - -// Given an array of slices that are received, returns an array of slices to -// download. |received_slices| must be ordered by offsets. -CONTENT_EXPORT std::vector<download::DownloadItem::ReceivedSlice> -FindSlicesToDownload( - const std::vector<download::DownloadItem::ReceivedSlice>& received_slices); - -// Adds or merges a new received slice into a vector of sorted slices. If the -// slice can be merged with the slice preceding it, merge the 2 slices. -// Otherwise, insert the slice and keep the vector sorted. Returns the index -// of the newly updated slice. -CONTENT_EXPORT size_t AddOrMergeReceivedSliceIntoSortedArray( - const download::DownloadItem::ReceivedSlice& new_slice, - std::vector<download::DownloadItem::ReceivedSlice>& received_slices); - -// Returns if a preceding stream can still download the part of content that -// was arranged to |error_stream|. -CONTENT_EXPORT bool CanRecoverFromError( - const DownloadFileImpl::SourceStream* error_stream, - const DownloadFileImpl::SourceStream* preceding_neighbor); - -// Finch configuration utilities. -// -// Get the minimum slice size to use parallel download from finch configuration. -// A slice won't be further chunked into smaller slices if the size is less -// than the minimum size. -CONTENT_EXPORT int64_t GetMinSliceSizeConfig(); - -// Get the request count for parallel download from finch configuration. -CONTENT_EXPORT int GetParallelRequestCountConfig(); - -// Get the time delay to send parallel requests after the response of original -// request is handled. -CONTENT_EXPORT base::TimeDelta GetParallelRequestDelayConfig(); - -// Get the required remaining time before creating parallel requests. -CONTENT_EXPORT base::TimeDelta GetParallelRequestRemainingTimeConfig(); - -// Print the states of received slices for debugging. -CONTENT_EXPORT void DebugSlicesInfo( - const download::DownloadItem::ReceivedSlices& slices); - -// Given an ordered array of slices, get the maximum size of a contiguous data -// block that starts from offset 0. If the first slice doesn't start from offset -// 0, return 0. -CONTENT_EXPORT int64_t GetMaxContiguousDataBlockSizeFromBeginning( - const download::DownloadItem::ReceivedSlices& slices); - -// Returns whether parallel download is enabled. -CONTENT_EXPORT bool IsParallelDownloadEnabled(); - -} // namespace content - -#endif // CONTENT_BROWSER_DOWNLOAD_PARALLEL_DOWNLOAD_UTILS_H_ |