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Unified Diff: webkit/browser/fileapi/recursive_operation_delegate.cc

Issue 539143002: Migrate webkit/browser/ to storage/browser/ (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 6 years, 3 months ago
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Index: webkit/browser/fileapi/recursive_operation_delegate.cc
diff --git a/webkit/browser/fileapi/recursive_operation_delegate.cc b/webkit/browser/fileapi/recursive_operation_delegate.cc
deleted file mode 100644
index 7836b325656e666432d889c1baed8847391cb637..0000000000000000000000000000000000000000
--- a/webkit/browser/fileapi/recursive_operation_delegate.cc
+++ /dev/null
@@ -1,239 +0,0 @@
-// Copyright (c) 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 "webkit/browser/fileapi/recursive_operation_delegate.h"
-
-#include "base/bind.h"
-#include "webkit/browser/fileapi/file_system_context.h"
-#include "webkit/browser/fileapi/file_system_operation_runner.h"
-
-namespace storage {
-
-namespace {
-// Don't start too many inflight operations.
-const int kMaxInflightOperations = 5;
-}
-
-RecursiveOperationDelegate::RecursiveOperationDelegate(
- FileSystemContext* file_system_context)
- : file_system_context_(file_system_context),
- inflight_operations_(0),
- canceled_(false) {
-}
-
-RecursiveOperationDelegate::~RecursiveOperationDelegate() {
-}
-
-void RecursiveOperationDelegate::Cancel() {
- canceled_ = true;
- OnCancel();
-}
-
-void RecursiveOperationDelegate::StartRecursiveOperation(
- const FileSystemURL& root,
- const StatusCallback& callback) {
- DCHECK(pending_directory_stack_.empty());
- DCHECK(pending_files_.empty());
- DCHECK_EQ(0, inflight_operations_);
-
- callback_ = callback;
- ++inflight_operations_;
- ProcessFile(
- root,
- base::Bind(&RecursiveOperationDelegate::DidTryProcessFile,
- AsWeakPtr(), root));
-}
-
-FileSystemOperationRunner* RecursiveOperationDelegate::operation_runner() {
- return file_system_context_->operation_runner();
-}
-
-void RecursiveOperationDelegate::OnCancel() {
-}
-
-void RecursiveOperationDelegate::DidTryProcessFile(
- const FileSystemURL& root,
- base::File::Error error) {
- DCHECK(pending_directory_stack_.empty());
- DCHECK(pending_files_.empty());
- DCHECK_EQ(1, inflight_operations_);
-
- --inflight_operations_;
- if (canceled_ || error != base::File::FILE_ERROR_NOT_A_FILE) {
- Done(error);
- return;
- }
-
- pending_directory_stack_.push(std::queue<FileSystemURL>());
- pending_directory_stack_.top().push(root);
- ProcessNextDirectory();
-}
-
-void RecursiveOperationDelegate::ProcessNextDirectory() {
- DCHECK(pending_files_.empty());
- DCHECK(!pending_directory_stack_.empty());
- DCHECK(!pending_directory_stack_.top().empty());
- DCHECK_EQ(0, inflight_operations_);
-
- const FileSystemURL& url = pending_directory_stack_.top().front();
-
- ++inflight_operations_;
- ProcessDirectory(
- url,
- base::Bind(
- &RecursiveOperationDelegate::DidProcessDirectory, AsWeakPtr()));
-}
-
-void RecursiveOperationDelegate::DidProcessDirectory(
- base::File::Error error) {
- DCHECK(pending_files_.empty());
- DCHECK(!pending_directory_stack_.empty());
- DCHECK(!pending_directory_stack_.top().empty());
- DCHECK_EQ(1, inflight_operations_);
-
- --inflight_operations_;
- if (canceled_ || error != base::File::FILE_OK) {
- Done(error);
- return;
- }
-
- const FileSystemURL& parent = pending_directory_stack_.top().front();
- pending_directory_stack_.push(std::queue<FileSystemURL>());
- operation_runner()->ReadDirectory(
- parent,
- base::Bind(&RecursiveOperationDelegate::DidReadDirectory,
- AsWeakPtr(), parent));
-}
-
-void RecursiveOperationDelegate::DidReadDirectory(
- const FileSystemURL& parent,
- base::File::Error error,
- const FileEntryList& entries,
- bool has_more) {
- DCHECK(!pending_directory_stack_.empty());
- DCHECK_EQ(0, inflight_operations_);
-
- if (canceled_ || error != base::File::FILE_OK) {
- Done(error);
- return;
- }
-
- for (size_t i = 0; i < entries.size(); i++) {
- FileSystemURL url = file_system_context_->CreateCrackedFileSystemURL(
- parent.origin(),
- parent.mount_type(),
- parent.virtual_path().Append(entries[i].name));
- if (entries[i].is_directory)
- pending_directory_stack_.top().push(url);
- else
- pending_files_.push(url);
- }
-
- // Wait for next entries.
- if (has_more)
- return;
-
- ProcessPendingFiles();
-}
-
-void RecursiveOperationDelegate::ProcessPendingFiles() {
- DCHECK(!pending_directory_stack_.empty());
-
- if ((pending_files_.empty() || canceled_) && inflight_operations_ == 0) {
- ProcessSubDirectory();
- return;
- }
-
- // Do not post any new tasks.
- if (canceled_)
- return;
-
- // Run ProcessFile in parallel (upto kMaxInflightOperations).
- scoped_refptr<base::MessageLoopProxy> current_message_loop =
- base::MessageLoopProxy::current();
- while (!pending_files_.empty() &&
- inflight_operations_ < kMaxInflightOperations) {
- ++inflight_operations_;
- current_message_loop->PostTask(
- FROM_HERE,
- base::Bind(&RecursiveOperationDelegate::ProcessFile,
- AsWeakPtr(), pending_files_.front(),
- base::Bind(&RecursiveOperationDelegate::DidProcessFile,
- AsWeakPtr())));
- pending_files_.pop();
- }
-}
-
-void RecursiveOperationDelegate::DidProcessFile(
- base::File::Error error) {
- --inflight_operations_;
- if (error != base::File::FILE_OK) {
- // If an error occurs, invoke Done immediately (even if there remain
- // running operations). It is because in the callback, this instance is
- // deleted.
- Done(error);
- return;
- }
-
- ProcessPendingFiles();
-}
-
-void RecursiveOperationDelegate::ProcessSubDirectory() {
- DCHECK(pending_files_.empty());
- DCHECK(!pending_directory_stack_.empty());
- DCHECK_EQ(0, inflight_operations_);
-
- if (canceled_) {
- Done(base::File::FILE_ERROR_ABORT);
- return;
- }
-
- if (!pending_directory_stack_.top().empty()) {
- // There remain some sub directories. Process them first.
- ProcessNextDirectory();
- return;
- }
-
- // All subdirectories are processed.
- pending_directory_stack_.pop();
- if (pending_directory_stack_.empty()) {
- // All files/directories are processed.
- Done(base::File::FILE_OK);
- return;
- }
-
- DCHECK(!pending_directory_stack_.top().empty());
- ++inflight_operations_;
- PostProcessDirectory(
- pending_directory_stack_.top().front(),
- base::Bind(&RecursiveOperationDelegate::DidPostProcessDirectory,
- AsWeakPtr()));
-}
-
-void RecursiveOperationDelegate::DidPostProcessDirectory(
- base::File::Error error) {
- DCHECK(pending_files_.empty());
- DCHECK(!pending_directory_stack_.empty());
- DCHECK(!pending_directory_stack_.top().empty());
- DCHECK_EQ(1, inflight_operations_);
-
- --inflight_operations_;
- pending_directory_stack_.top().pop();
- if (canceled_ || error != base::File::FILE_OK) {
- Done(error);
- return;
- }
-
- ProcessSubDirectory();
-}
-
-void RecursiveOperationDelegate::Done(base::File::Error error) {
- if (canceled_ && error == base::File::FILE_OK) {
- callback_.Run(base::File::FILE_ERROR_ABORT);
- } else {
- callback_.Run(error);
- }
-}
-
-} // namespace storage

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