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134 lines
5.2 KiB
134 lines
5.2 KiB
/*
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* Copyright (C) 2016 The Android Open Source Project
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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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* http://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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*/
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#include <string>
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#include <hidl/HidlLazyUtils.h>
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#include <hidl/HidlTransportSupport.h>
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#include <sys/wait.h>
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#include <utils/Errors.h>
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#include <utils/Log.h>
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#include <utils/StrongPointer.h>
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#pragma once
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namespace android {
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namespace hardware {
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namespace details {
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using RegisterServiceCb =
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std::function<status_t(const sp<::android::hidl::base::V1_0::IBase>&, const std::string&)>;
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__attribute__((warn_unused_result)) status_t registerPassthroughServiceImplementation(
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const std::string& interfaceName, const std::string& expectInterfaceName,
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RegisterServiceCb registerServiceCb, const std::string& serviceName = "default");
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} // namespace details
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/**
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* Registers passthrough service implementation.
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*/
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__attribute__((warn_unused_result)) status_t registerPassthroughServiceImplementation(
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const std::string& interfaceName, const std::string& expectInterfaceName,
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const std::string& serviceName);
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inline __attribute__((warn_unused_result)) status_t registerPassthroughServiceImplementation(
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const std::string& interfaceName, const std::string& serviceName = "default") {
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return registerPassthroughServiceImplementation(interfaceName, interfaceName, serviceName);
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}
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template <class Interface, class ExpectInterface = Interface>
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__attribute__((warn_unused_result)) status_t registerPassthroughServiceImplementation(
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const std::string& name = "default") {
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return registerPassthroughServiceImplementation(Interface::descriptor,
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ExpectInterface::descriptor, name);
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}
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/**
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* Creates default passthrough service implementation. This method never returns.
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*
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* Return value is exit status.
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*/
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template <class Interface, class ExpectInterface = Interface>
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__attribute__((warn_unused_result)) status_t defaultPassthroughServiceImplementation(
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const std::string& name, size_t maxThreads = 1) {
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configureRpcThreadpool(maxThreads, true);
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status_t result = registerPassthroughServiceImplementation<Interface, ExpectInterface>(name);
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if (result != OK) {
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return result;
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}
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joinRpcThreadpool();
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return UNKNOWN_ERROR;
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}
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template <class Interface, class ExpectInterface = Interface>
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__attribute__((warn_unused_result)) status_t defaultPassthroughServiceImplementation(
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size_t maxThreads = 1) {
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return defaultPassthroughServiceImplementation<Interface, ExpectInterface>("default",
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maxThreads);
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}
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/**
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* Registers a passthrough service implementation that exits when there are 0 clients.
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*
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* If this function is called multiple times to register different services, then this process will
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* only exit once all services have 0 clients. This function does not know about clients registered
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* through registerPassthroughServiceImplementation, so if that function is used in conjunction with
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* this one, the process may exit while a client is still using the HAL.
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*/
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template <class Interface, class ExpectInterface = Interface>
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__attribute__((warn_unused_result)) status_t registerLazyPassthroughServiceImplementation(
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const std::string& name = "default") {
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return details::registerPassthroughServiceImplementation(
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Interface::descriptor, ExpectInterface::descriptor,
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[](const sp<::android::hidl::base::V1_0::IBase>& service, const std::string& name) {
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using android::hardware::LazyServiceRegistrar;
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return LazyServiceRegistrar::getInstance().registerService(service, name);
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},
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name);
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}
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/**
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* Creates default passthrough service implementation that exits when there are 0 clients. This
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* method never returns.
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*
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* Return value is exit status.
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*/
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template <class Interface, class ExpectInterface = Interface>
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__attribute__((warn_unused_result)) status_t defaultLazyPassthroughServiceImplementation(
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const std::string& name, size_t maxThreads = 1) {
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configureRpcThreadpool(maxThreads, true);
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status_t result =
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registerLazyPassthroughServiceImplementation<Interface, ExpectInterface>(name);
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if (result != OK) {
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return result;
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}
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joinRpcThreadpool();
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return UNKNOWN_ERROR;
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}
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template <class Interface, class ExpectInterface = Interface>
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__attribute__((warn_unused_result)) status_t defaultLazyPassthroughServiceImplementation(
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size_t maxThreads = 1) {
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return defaultLazyPassthroughServiceImplementation<Interface, ExpectInterface>("default",
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maxThreads);
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}
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} // namespace hardware
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} // namespace android
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