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package androidx.recyclerview.widget;
import androidx.recyclerview.widget.DiffUtil;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
public final class AsyncDifferConfig<T> {
private final Executor mBackgroundThreadExecutor;
private final DiffUtil.ItemCallback<T> mDiffCallback;
private final Executor mMainThreadExecutor;
AsyncDifferConfig(Executor executor, Executor executor2, DiffUtil.ItemCallback<T> itemCallback) {
this.mMainThreadExecutor = executor;
this.mBackgroundThreadExecutor = executor2;
this.mDiffCallback = itemCallback;
}
public Executor getMainThreadExecutor() {
return this.mMainThreadExecutor;
}
public Executor getBackgroundThreadExecutor() {
return this.mBackgroundThreadExecutor;
}
public DiffUtil.ItemCallback<T> getDiffCallback() {
return this.mDiffCallback;
}
public static final class Builder<T> {
private static Executor sDiffExecutor;
private static final Object sExecutorLock = new Object();
private Executor mBackgroundThreadExecutor;
private final DiffUtil.ItemCallback<T> mDiffCallback;
private Executor mMainThreadExecutor;
public Builder(DiffUtil.ItemCallback<T> itemCallback) {
this.mDiffCallback = itemCallback;
}
public Builder<T> setMainThreadExecutor(Executor executor) {
this.mMainThreadExecutor = executor;
return this;
}
public Builder<T> setBackgroundThreadExecutor(Executor executor) {
this.mBackgroundThreadExecutor = executor;
return this;
}
public AsyncDifferConfig<T> build() {
if (this.mBackgroundThreadExecutor == null) {
synchronized (sExecutorLock) {
if (sDiffExecutor == null) {
sDiffExecutor = Executors.newFixedThreadPool(2);
}
}
this.mBackgroundThreadExecutor = sDiffExecutor;
}
return new AsyncDifferConfig<>(this.mMainThreadExecutor, this.mBackgroundThreadExecutor, this.mDiffCallback);
}
}
}
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