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Commit e6a1b4e8 authored by Vadim Caen's avatar Vadim Caen
Browse files

Add background executor fow WmShell 

Add a low priority ShellExectuor for background task in WmShell

Test: N/A
Bug: 228936326
Change-Id: I10adafa03aca98a9080fd4ac1e8ba42fa9683914
parent 21469e70

libs/WindowManager/Shell/src/com/android/wm/shell/common/annotations/ShellBackgroundThread.java

0 → 100644
+33 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2021 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.common.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 shared background thread */

@Documented

@Inherited

@Qualifier

@Retention(RetentionPolicy.RUNTIME)

public @interface ShellBackgroundThread {

}

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

+26 −0
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ 


package com.android.wm.shell.dagger;



import static android.os.Process.THREAD_PRIORITY_BACKGROUND;

import static android.os.Process.THREAD_PRIORITY_DISPLAY;

import static android.os.Process.THREAD_PRIORITY_TOP_APP_BOOST;
@@ -36,6 +37,7 @@ import com.android.wm.shell.common.ShellExecutor; 
import com.android.wm.shell.common.annotations.ChoreographerSfVsync;

import com.android.wm.shell.common.annotations.ExternalMainThread;

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

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

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

import com.android.wm.shell.common.annotations.ShellSplashscreenThread;
@@ -195,4 +197,28 @@ public abstract class WMShellConcurrencyModule { 
            throw new RuntimeException("Failed to initialize SfVsync animation handler in 1s", e);

        }

    }



    /**

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

     */

    @WMSingleton

    @Provides

    @ShellBackgroundThread

    public static Handler provideSharedBackgroundHandler() {

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

                THREAD_PRIORITY_BACKGROUND);

        shellBackgroundThread.start();

        return shellBackgroundThread.getThreadHandler();

    }



    /**

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

     */

    @WMSingleton

    @Provides

    @ShellBackgroundThread

    public static ShellExecutor provideSharedBackgroundExecutor(

            @ShellBackgroundThread Handler handler) {

        return new HandlerExecutor(handler);

    }

}