57 lines
2.5 KiB
Java
57 lines
2.5 KiB
Java
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/*
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* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package jdk.internal.vm.annotation;
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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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// Android-note: ReservedStackAccess-specific implementation not available on Android.
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/**
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* <p>An annotation expressing that a method is especially sensitive
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* to stack overflows. This is a hint the JVM can use to grant access to
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* extra stack space when executing this code if such feature is supported
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* by the JVM. The JVM is free to ignore this annotation.
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*
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* A possible way for the JVM to improve the execution context for methods
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* with this annotation is to reserve part of the thread's execution stack
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* for them. Access to this section of the stack would be denied by default
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* but could be granted if the JVM detects a possible stack overflow and
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* the thread's call stack includes at least one annotated method. Even if
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* access to this reserved area has been granted, the JVM might decide to
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* throw a delayed StackOverflowError when the thread exits the annotated
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* method.
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*
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* @since 9
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*/
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// Android-changed: RetentionPolicy.SOURCE is sufficient as this is no-op on Android.
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// @Retention(RetentionPolicy.RUNTIME)
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@Retention(RetentionPolicy.SOURCE)
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@Target({ElementType.METHOD, ElementType.CONSTRUCTOR})
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public @interface ReservedStackAccess { }
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