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/*
* Copyright (C) 2006 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 android.os;
import android.os.IClientCallback;
import android.os.IServiceCallback;
/**
* Basic interface for finding and publishing system services.
*
* You likely want to use android.os.ServiceManager in Java or
* android::IServiceManager in C++ in order to use this interface.
*
* @hide
*/
interface IServiceManager {
/*
* Must update values in IServiceManager.h
*/
/* Allows services to dump sections according to priorities. */
const int DUMP_FLAG_PRIORITY_CRITICAL = 1 << 0;
const int DUMP_FLAG_PRIORITY_HIGH = 1 << 1;
const int DUMP_FLAG_PRIORITY_NORMAL = 1 << 2;
/**
* Services are by default registered with a DEFAULT dump priority. DEFAULT priority has the
* same priority as NORMAL priority but the services are not called with dump priority
* arguments.
*/
const int DUMP_FLAG_PRIORITY_DEFAULT = 1 << 3;
const int DUMP_FLAG_PRIORITY_ALL = 15;
// DUMP_FLAG_PRIORITY_CRITICAL | DUMP_FLAG_PRIORITY_HIGH
// | DUMP_FLAG_PRIORITY_NORMAL | DUMP_FLAG_PRIORITY_DEFAULT;
/* Allows services to dump sections in protobuf format. */
const int DUMP_FLAG_PROTO = 1 << 4;
/**
* Retrieve an existing service called @a name from the
* service manager.
*
* This is the same as checkService (returns immediately) but
* exists for legacy purposes.
*
* Returns null if the service does not exist.
*/
@UnsupportedAppUsage
@nullable IBinder getService(@utf8InCpp String name);
/**
* Retrieve an existing service called @a name from the service
* manager. Non-blocking. Returns null if the service does not
* exist.
*/
@UnsupportedAppUsage
@nullable IBinder checkService(@utf8InCpp String name);
/**
* Place a new @a service called @a name into the service
* manager.
*/
void addService(@utf8InCpp String name, IBinder service,
boolean allowIsolated, int dumpPriority);
/**
* Return a list of all currently running services.
*/
@utf8InCpp String[] listServices(int dumpPriority);
/**
* Request a callback when a service is registered.
*/
void registerForNotifications(@utf8InCpp String name, IServiceCallback callback);
/**
* Unregisters all requests for notifications for a specific callback.
*/
void unregisterForNotifications(@utf8InCpp String name, IServiceCallback callback);
/**
* Returns whether a given interface is declared on the device, even if it
* is not started yet. For instance, this could be a service declared in the VINTF
* manifest.
*/
boolean isDeclared(@utf8InCpp String name);
/**
* Request a callback when the number of clients of the service changes.
* Used by LazyServiceRegistrar to dynamically stop services that have no clients.
*/
void registerClientCallback(@utf8InCpp String name, IBinder service, IClientCallback callback);
/**
* Attempt to unregister and remove a service. Will fail if the service is still in use.
*/
void tryUnregisterService(@utf8InCpp String name, IBinder service);
}
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