50 lines
1.8 KiB
Java
50 lines
1.8 KiB
Java
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/*
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* Copyright (C) 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package dalvik.annotation.optimization;
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import static android.annotation.SystemApi.Client.MODULE_LIBRARIES;
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import android.annotation.SystemApi;
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import java.lang.annotation.ElementType;
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import java.lang.annotation.Retention;
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import java.lang.annotation.RetentionPolicy;
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import java.lang.annotation.Target;
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/**
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* Indicates that an API should never be inlined.
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*
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* <p>
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* NeverInline can be used to annotate methods that should not be inlined into other methods.
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* Methods that are not called frequently, are never speed-critical, or are only used for
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* debugging do not necessarily need to run quickly. Applying this annotation to prevent these
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* methods from being inlined will return some size improvements in .odex files.
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* </p>
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*
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* <p>
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* The <code>fillInStackTrace</code> method in java.lang.Throwable can be used as a concrete
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* example. This is a method that fills in the execution stack trace and it is not used for
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* performance. Annotating this method with NeverInline can be seen to significantly reduce
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* the size of services.odex.
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* </p>
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* @hide
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*/
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@SystemApi(client = MODULE_LIBRARIES)
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@Retention(RetentionPolicy.CLASS)
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@Target({ElementType.CONSTRUCTOR, ElementType.METHOD})
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public @interface NeverInline {}
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