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Commit 8a4c787c authored by Qijing Yao's avatar Qijing Yao
Browse files

Add ShellDesktopThread 

This CL extracts the ShellDesktopThread and related changes from
ag/30771569 to enable faster integration.
This thread will be used for visual indicators in desktop mode as part
of the new system UI threading model to reduce jank.

Bug: 366413536
Test: build
Flag: EXEMPT adding new unused thread, no functional changes
Change-Id: Id6484194485bd88a47302078ae796b8fab79ceaf
parent 45d73de7

libs/WindowManager/Shell/shared/src/com/android/wm/shell/shared/annotations/ShellDesktopThread.java

0 → 100644
+32 −0
Original line number Diff line number Diff line 
/*

 * 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 com.android.wm.shell.shared.annotations;



import java.lang.annotation.Documented;

import java.lang.annotation.Inherited;

import java.lang.annotation.Retention;

import java.lang.annotation.RetentionPolicy;



import javax.inject.Qualifier;



/** Annotates a method or qualifies a provider that runs on the Shell desktop thread */

@Documented

@Inherited

@Qualifier

@Retention(RetentionPolicy.RUNTIME)

public @interface ShellDesktopThread {

}

libs/WindowManager/Shell/src/com/android/wm/shell/dagger/WMShellConcurrencyModule.java

+15 −1
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ import com.android.wm.shell.common.ShellExecutor; 
import com.android.wm.shell.shared.annotations.ExternalMainThread;

import com.android.wm.shell.shared.annotations.ShellAnimationThread;

import com.android.wm.shell.shared.annotations.ShellBackgroundThread;

import com.android.wm.shell.shared.annotations.ShellDesktopThread;

import com.android.wm.shell.shared.annotations.ShellMainThread;

import com.android.wm.shell.shared.annotations.ShellSplashscreenThread;
@@ -192,6 +193,19 @@ public abstract class WMShellConcurrencyModule { 
        return new HandlerExecutor(shellSplashscreenThread.getThreadHandler());

    }



    /**

     * Provides a Shell desktop thread Executor

     */

    @WMSingleton

    @Provides

    @ShellDesktopThread

    public static ShellExecutor provideDesktopModeMiscExecutor() {

        HandlerThread shellDesktopThread = new HandlerThread("wmshell.desktop",

                THREAD_PRIORITY_TOP_APP_BOOST);

        shellDesktopThread.start();

        return new HandlerExecutor(shellDesktopThread.getThreadHandler());

    }



    /**

     * Provides a Shell background thread Handler for low priority background tasks.

     */
@@ -199,7 +213,7 @@ public abstract class WMShellConcurrencyModule { 
    @Provides

    @ShellBackgroundThread

    public static Handler provideSharedBackgroundHandler() {

        HandlerThread shellBackgroundThread = new HandlerThread("wmshell.background",

        final HandlerThread shellBackgroundThread = new HandlerThread("wmshell.background",

                THREAD_PRIORITY_BACKGROUND);

        shellBackgroundThread.start();

        return shellBackgroundThread.getThreadHandler();