mirror of
https://github.com/kidfromjupiter/nearby.git
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96 lines
2.6 KiB
C++
96 lines
2.6 KiB
C++
// Copyright 2022-2023 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "sharing/nearby_connection_impl.h"
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#include <cstdint>
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#include <functional>
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#include <optional>
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#include <queue>
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#include <utility>
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#include <vector>
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#include "absl/synchronization/mutex.h"
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#include "internal/platform/implementation/device_info.h"
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#include "sharing/internal/public/logging.h"
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namespace nearby::sharing {
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NearbyConnectionImpl::NearbyConnectionImpl(nearby::api::DeviceInfo& device_info)
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: device_info_(device_info) {
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if (!device_info_.PreventSleep()) {
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LOG(WARNING) << __func__ << ":Failed to prevent device sleep.";
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}
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}
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NearbyConnectionImpl::~NearbyConnectionImpl() {
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std::function<void()> disconnect_listener;
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std::function<void(std::optional<std::vector<uint8_t>> bytes)> read_callback;
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{
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absl::MutexLock lock(mutex_);
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if (!device_info_.AllowSleep()) {
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LOG(ERROR) << __func__ << ":Failed to allow device sleep.";
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}
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disconnect_listener = std::move(disconnect_listener_);
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read_callback = std::move(read_callback_);
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}
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if (disconnect_listener) {
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disconnect_listener();
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}
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if (read_callback) {
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read_callback(std::nullopt);
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}
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}
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void NearbyConnectionImpl::Read(
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std::function<void(std::optional<std::vector<uint8_t>> bytes)> callback) {
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std::vector<uint8_t> bytes;
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{
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absl::MutexLock lock(mutex_);
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if (reads_.empty()) {
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read_callback_ = std::move(callback);
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return;
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}
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bytes = std::move(reads_.front());
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reads_.pop();
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}
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std::move(callback)(std::move(bytes));
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}
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void NearbyConnectionImpl::SetDisconnectionListener(
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std::function<void()> listener) {
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absl::MutexLock lock(mutex_);
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disconnect_listener_ = std::move(listener);
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}
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void NearbyConnectionImpl::WriteMessage(std::vector<uint8_t> bytes) {
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std::function<void(std::optional<std::vector<uint8_t>> bytes)> read_callback;
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{
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absl::MutexLock lock(mutex_);
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if (!read_callback_) {
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reads_.push(std::move(bytes));
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return;
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}
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read_callback = std::move(read_callback_);
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read_callback_ = nullptr;
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}
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if (read_callback) {
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read_callback(std::move(bytes));
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}
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}
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} // namespace nearby::sharing
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