libs/binder/ndk/include_platform/android/binder_manager.h

/*
 * Copyright (C) 2018 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.
 */

#pragma once

#include <android/binder_ibinder.h>
#include <android/binder_status.h>

__BEGIN_DECLS

/**
 * This registers the service with the default service manager under this instance name. This does
 * not take ownership of binder.
 *
 * \param binder object to register globally with the service manager.
 * \param instance identifier of the service. This will be used to lookup the service.
 *
 * \return STATUS_OK on success.
 */
binder_status_t AServiceManager_addService(AIBinder* binder, const char* instance);

/**
 * Gets a binder object with this specific instance name. Will return nullptr immediately if the
 * service is not available This also implicitly calls AIBinder_incStrong (so the caller of this
 * function is responsible for calling AIBinder_decStrong).
 *
 * \param instance identifier of the service used to lookup the service.
 */
__attribute__((warn_unused_result)) AIBinder* AServiceManager_checkService(const char* instance);

/**
 * Gets a binder object with this specific instance name. Blocks for a couple of seconds waiting on
 * it. This also implicitly calls AIBinder_incStrong (so the caller of this function is responsible
 * for calling AIBinder_decStrong).
 *
 * \param instance identifier of the service used to lookup the service.
 */
__attribute__((warn_unused_result)) AIBinder* AServiceManager_getService(const char* instance);

__END_DECLS