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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "storage/browser/blob/scoped_file.h"
#include "base/files/file_util.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/location.h"
#include "base/logging.h"
#include "base/task/single_thread_task_runner.h"
#include "base/task/task_runner.h"
namespace storage {
ScopedFile::ScopedFile()
: scope_out_policy_(DONT_DELETE_ON_SCOPE_OUT) {
}
ScopedFile::ScopedFile(const base::FilePath& path,
ScopeOutPolicy policy,
scoped_refptr<base::TaskRunner> file_task_runner)
: path_(path),
scope_out_policy_(policy),
file_task_runner_(std::move(file_task_runner)) {
DCHECK(path.empty() || policy != DELETE_ON_SCOPE_OUT ||
file_task_runner_.get())
<< "path:" << path.value() << " policy:" << policy
<< " runner:" << file_task_runner_.get();
}
ScopedFile::ScopedFile(ScopedFile&& other) {
MoveFrom(other);
}
ScopedFile::~ScopedFile() {
Reset();
}
void ScopedFile::AddScopeOutCallback(ScopeOutCallback callback,
base::TaskRunner* callback_runner) {
if (!callback_runner)
callback_runner = base::SingleThreadTaskRunner::GetCurrentDefault().get();
scope_out_callbacks_.emplace_back(std::move(callback), callback_runner);
}
base::FilePath ScopedFile::Release() {
base::FilePath path = path_;
path_.clear();
scope_out_callbacks_.clear();
scope_out_policy_ = DONT_DELETE_ON_SCOPE_OUT;
return path;
}
void ScopedFile::Reset() {
if (path_.empty())
return;
for (auto iter = scope_out_callbacks_.rbegin();
iter != scope_out_callbacks_.rend(); ++iter) {
iter->second->PostTask(FROM_HERE,
base::BindOnce(std::move(iter->first), path_));
}
DVLOG(1) << "ScopedFile::Reset(): "
<< (scope_out_policy_ == DELETE_ON_SCOPE_OUT ? "Deleting "
: "Not deleting ")
<< path_.value();
if (scope_out_policy_ == DELETE_ON_SCOPE_OUT) {
file_task_runner_->PostTask(FROM_HERE, base::GetDeleteFileCallback(path_));
}
// Clear all fields.
Release();
}
void ScopedFile::MoveFrom(ScopedFile& other) {
Reset();
scope_out_policy_ = other.scope_out_policy_;
scope_out_callbacks_.swap(other.scope_out_callbacks_);
file_task_runner_ = other.file_task_runner_;
path_ = other.Release();
}
} // namespace storage
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