Add the skelton of NativeActivityThread

//

// Copyright (C) 2025 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 {

    default_applicable_licenses: ["Android-Apache-2.0"],

    default_visibility: ["//system/zygote:__subpackages__"],

}

rust_library {

    name: "libnative_activity_thread",

    crate_name: "native_activity_thread",

    edition: "2021",

    srcs: [

        "src/lib.rs",

    ],

    rustlibs: [

        "liblogger",

        "liblog_rust",

    ],

}

chibar@google.com

ishitatsuyuki@google.com

jham@google.com

uekawa@google.com

//

// Copyright (C) 2025 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.

//! The crate providing the functionality to manage the native application process.

use log::{info, LevelFilter};

/// Start NativeActivityThread to manage the process.

pub fn run_native_activity_thread(start_seq: i64) -> ! {

    logger::init(

        logger::Config::default()

            .with_tag_on_device("native_activity_thread")

            .with_max_level(LevelFilter::Trace),

    );

    info!("Hello from the native activity thread! start_seq={}", start_seq);

    // TODO(b/402614577): Implement the ActivityThread logic.

    panic!("Something wrong happened!");

}