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barrier_builder.cc
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barrier_builder.cc
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// Copyright 2018 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 "content/test/barrier_builder.h"
#include "base/bind.h"
#include "base/callback_helpers.h"
namespace content {
// The callbacks returned by |AddClosure| can get called after destruction of
// BarrierBuilder, so there needs to be an internal class to hold the final
// callback.
class BarrierBuilder::InternalBarrierBuilder
: public base::RefCountedThreadSafe<
BarrierBuilder::InternalBarrierBuilder> {
public:
InternalBarrierBuilder(base::OnceClosure done_closure)
: done_runner_(std::move(done_closure)) {}
private:
friend class base::RefCountedThreadSafe<
BarrierBuilder::InternalBarrierBuilder>;
~InternalBarrierBuilder() = default;
base::ScopedClosureRunner done_runner_;
DISALLOW_COPY_AND_ASSIGN(InternalBarrierBuilder);
};
BarrierBuilder::BarrierBuilder(base::OnceClosure done_closure)
: internal_barrier_(
new BarrierBuilder::InternalBarrierBuilder(std::move(done_closure))) {
}
BarrierBuilder::~BarrierBuilder() = default;
base::OnceClosure BarrierBuilder::AddClosure() {
return base::BindOnce(
[](scoped_refptr<BarrierBuilder::InternalBarrierBuilder>) {},
internal_barrier_);
}
} // namespace content