125 lines
4.6 KiB
C++
125 lines
4.6 KiB
C++
/*
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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 "Enumerator.h"
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#include "EnumeratorProxy.h"
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#include "ServiceNames.h"
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#include <android-base/logging.h>
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#include <hidl/HidlTransportSupport.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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#include <unistd.h>
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#include <mutex> // NOLINT
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#include <string>
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using android::OK;
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using android::status_t;
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using android::automotive::evs::V1_1::implementation::Enumerator;
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using android::automotive::evs::V1_1::implementation::EnumeratorProxy;
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using android::hardware::configureRpcThreadpool;
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using android::hardware::joinRpcThreadpool;
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using android::hardware::automotive::evs::V1_0::IEvsDisplay;
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using android::hardware::automotive::evs::V1_1::IEvsEnumerator;
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struct Context {
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mutable std::mutex lock;
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const char* hardwareServiceName;
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const char* managerServiceName;
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std::unique_ptr<IEvsEnumerator> enumerator = nullptr;
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};
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static void startService(Context* context) {
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LOG(INFO) << "EVS managed service connecting to hardware service at "
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<< context->hardwareServiceName;
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std::lock_guard<std::mutex> lock_guard{context->lock};
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context->enumerator =
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std::make_unique<EnumeratorProxy>(Enumerator::build(context->hardwareServiceName));
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if (!context->enumerator) {
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LOG(ERROR) << "Failed to connect to hardware service - quitting from registrationThread";
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exit(1);
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}
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// Register our service -- if somebody is already registered by our name,
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// they will be killed (their thread pool will throw an exception).
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LOG(INFO) << "EVS managed service is starting as " << context->managerServiceName;
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if (status_t status = context->enumerator->registerAsService(); status != OK) {
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LOG(ERROR) << "Could not register service " << context->managerServiceName
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<< " status = " << status << " - quitting from registrationThread";
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exit(2);
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}
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LOG(INFO) << "Registration complete";
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}
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int main(int argc, char** argv) {
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LOG(INFO) << "EVS manager starting";
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#ifdef EVS_DEBUG
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SetMinimumLogSeverity(android::base::DEBUG);
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#endif
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// Set up default behavior, then check for command line options
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bool printHelp = false;
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const char* evsHardwareServiceName = kHardwareEnumeratorName;
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for (int i = 1; i < argc; i++) {
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if (strcmp(argv[i], "--mock") == 0) {
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evsHardwareServiceName = kMockEnumeratorName;
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} else if (strcmp(argv[i], "--target") == 0) {
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i++;
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if (i >= argc) {
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LOG(ERROR) << "--target <service> was not provided with a service name";
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} else {
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evsHardwareServiceName = argv[i];
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}
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} else if (strcmp(argv[i], "--help") == 0) {
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printHelp = true;
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} else {
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printf("Ignoring unrecognized command line arg '%s'\n", argv[i]);
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printHelp = true;
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}
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}
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if (printHelp) {
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printf("Options include:\n");
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printf(" --mock Connect to the mock driver at EvsEnumeratorHw-Mock\n");
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printf(" --target <service_name> Connect to the named IEvsEnumerator service");
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}
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// Prepare the RPC serving thread pool. We're configuring it with no additional
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// threads beyond the main thread which will "join" the pool below.
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configureRpcThreadpool(1, true /* callerWillJoin */);
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// The connection to the underlying hardware service must happen on a dedicated thread to ensure
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// that the hwbinder response can be processed by the thread pool without blocking.
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Context context{.hardwareServiceName = evsHardwareServiceName,
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.managerServiceName = kManagedEnumeratorName,
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.enumerator = nullptr};
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std::thread registrationThread(startService, &context);
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// Send this main thread to become a permanent part of the thread pool.
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// This is not expected to return.
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LOG(INFO) << "Main thread entering thread pool";
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joinRpcThreadpool();
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// In normal operation, we don't expect the thread pool to exit
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LOG(ERROR) << "EVS Hardware Enumerator is shutting down";
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return 1;
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}
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