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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/dbus/properties/success_barrier_callback.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
namespace {
class BarrierInfo {
public:
BarrierInfo(size_t num_calls_left,
base::OnceCallback<void(bool)> done_callback);
void Run(bool success);
private:
size_t num_calls_left_;
base::OnceCallback<void(bool)> done_callback_;
};
BarrierInfo::BarrierInfo(size_t num_calls,
base::OnceCallback<void(bool)> done_callback)
: num_calls_left_(num_calls), done_callback_(std::move(done_callback)) {}
void BarrierInfo::Run(bool success) {
auto run = [&](bool success) {
if (done_callback_)
std::move(done_callback_).Run(success);
};
if (num_calls_left_ == 0)
return;
num_calls_left_--;
if (!success)
run(false);
else if (num_calls_left_ == 0) // |success| must be true, no need to check.
run(true);
}
} // namespace
base::RepeatingCallback<void(bool)> SuccessBarrierCallback(
size_t num_calls,
base::OnceCallback<void(bool)> done_callback) {
DCHECK_GT(num_calls, 0U);
return base::BindRepeating(
&BarrierInfo::Run,
base::Owned(new BarrierInfo(num_calls, std::move(done_callback))));
}
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