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Commit a73a4428 authored by Vadim Caen's avatar Vadim Caen Committed by Android (Google) Code Review
Browse files

Merge "Add background executor fow WmShell" into tm-dev

parents bbc60f74 e6a1b4e8
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+33 −0
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/*
 * 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 {
}
+26 −0
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@@ -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);
    }
}