| // Copyright 2022 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <lib/async-loop/cpp/loop.h> |
| #include <lib/async-loop/default.h> |
| #include <lib/fidl/cpp/binding_set.h> |
| #include <lib/syslog/cpp/log_settings.h> |
| #include <lib/syslog/cpp/macros.h> |
| #include <lib/zx/channel.h> |
| #include <zircon/processargs.h> |
| |
| // [START imports] |
| #include <fuchsia/process/lifecycle/cpp/fidl.h> |
| // [END imports] |
| |
| // [START lifecycle_handler] |
| // Implementation of the fuchsia.process.lifecycle FIDL protocol |
| class LifecycleHandler : public fuchsia::process::lifecycle::Lifecycle { |
| public: |
| explicit LifecycleHandler(async::Loop* loop) : loop_(loop) { |
| // Get the PA_LIFECYCLE handle, and instantiate the channel with it |
| zx::channel channel = zx::channel(zx_take_startup_handle(PA_LIFECYCLE)); |
| // Bind to the channel and start listening for events |
| bindings_.AddBinding( |
| this, fidl::InterfaceRequest<fuchsia::process::lifecycle::Lifecycle>(std::move(channel)), |
| loop_->dispatcher()); |
| FX_LOGS(INFO) << "Lifecycle channel received."; |
| } |
| |
| // This is the Stop event we must override - see the pure virtual function we |
| // need to override at the declaration of fuchsia::process::lifecycle::Lifecycle |
| void Stop() override { |
| FX_LOGS(INFO) << "Received request to stop. Shutting down."; |
| // Shut down our loop - it's important to call Shutdown() here vs. Quit() |
| loop_->Shutdown(); |
| // Close the binding |
| bindings_.CloseAll(); |
| } |
| |
| private: |
| async::Loop* loop_; |
| fidl::BindingSet<fuchsia::process::lifecycle::Lifecycle> bindings_; |
| }; |
| // [END lifecycle_handler] |
| |
| int main(int argc, const char** argv) { |
| syslog::SetTags({"lifecycle", "example"}); |
| |
| // Create the main async event loop. |
| async::Loop loop(&kAsyncLoopConfigAttachToCurrentThread); |
| |
| // Instantiate our class which gets the lifecycle channel and listens for |
| // stop events |
| LifecycleHandler lifecycle_handler(&loop); |
| |
| FX_LOGS(INFO) << "Awaiting request to close..."; |
| |
| // Run the loop (until it is shutdown by the Stop handler). |
| loop.Run(); |
| return 0; |
| } |