mirror of
https://github.com/kidfromjupiter/nearby.git
synced 2026-09-15 07:06:11 -04:00
48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
// Copyright 2023 Google LLC
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// https://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#include <cassert>
|
|
#include <cstdlib>
|
|
#include <memory>
|
|
|
|
#include <sdbus-c++/IConnection.h>
|
|
|
|
#include "absl/base/call_once.h"
|
|
#include "absl/synchronization/mutex.h"
|
|
#include "internal/platform/implementation/linux/dbus.h"
|
|
|
|
namespace nearby {
|
|
namespace linux {
|
|
|
|
namespace {
|
|
static absl::Mutex global_system_bus_mutex;
|
|
static std::weak_ptr<sdbus::IConnection> global_system_bus_connection
|
|
ABSL_GUARDED_BY(global_system_bus_mutex);
|
|
} // namespace
|
|
|
|
std::shared_ptr<sdbus::IConnection> getSystemBusConnection() {
|
|
absl::MutexLock lock(&global_system_bus_mutex);
|
|
auto bus = global_system_bus_connection.lock();
|
|
if (bus == nullptr) {
|
|
bus =
|
|
std::shared_ptr<sdbus::IConnection>(sdbus::createSystemBusConnection());
|
|
bus->enterEventLoopAsync();
|
|
global_system_bus_connection = bus;
|
|
}
|
|
|
|
return bus;
|
|
}
|
|
} // namespace linux
|
|
} // namespace nearby
|