HsConnectionManager.kt
/*
* Copyright (C) 2021 The Android Open Source Project
*
* 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
*
* http://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.
*/
package androidx.health.services.client.impl.internal
import android.annotation.SuppressLint
import android.content.Context
import android.os.HandlerThread
import android.os.Looper
import android.os.Process
import androidx.annotation.GuardedBy
import androidx.annotation.RestrictTo
import androidx.health.services.client.impl.ipc.internal.ConnectionManager
/**
* Utility to return an instance of connection manager.
*
* @hide
*/
@RestrictTo(RestrictTo.Scope.LIBRARY)
public object HsConnectionManager {
private val lock = Any()
// Suppress StaticFieldLeak; we're only storing application Context.
@SuppressLint("StaticFieldLeak")
@GuardedBy("lock")
private lateinit var instance: ConnectionManager
@JvmStatic
public fun getInstance(context: Context): ConnectionManager {
synchronized(lock) {
if (!::instance.isInitialized) {
val looper = startHandlerThread()
instance = ConnectionManager(context.applicationContext, looper)
}
return instance
}
}
private fun startHandlerThread(): Looper {
val handlerThread =
HandlerThread(
"HsConnectionManager",
Process.THREAD_PRIORITY_BACKGROUND + Process.THREAD_PRIORITY_MORE_FAVORABLE
)
handlerThread.start()
return handlerThread.looper
}
}