org.graalvm.nativeimage.Platform Maven / Gradle / Ivy
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*
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* published by the Free Software Foundation. Oracle designates this
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* by Oracle in the LICENSE file that accompanied this code.
*
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
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*
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package org.graalvm.nativeimage;
/**
* Root of the interface hierarchy for architectures, OS, and supported combinations of them.
*
* A platform group (e.g., an architecture or OS) is an interface extending {@link Platform}. A leaf
* platform, e.g., a supported architecture-OS-combination, is a class that implements all the
* groups that it belongs to. It is good practice to make leaf platform classes {@code final}, to
* prevent accidental subclassing.
*
* The annotation {@link Platforms} restricts a type, method, or field to certain platform groups or
* leaf platforms.
*
* This system makes the set of platform groups and leaf platforms extensible. Some standard
* platforms are defined as inner classes.
*/
public interface Platform {
/*
* The standard architectures that we support.
*/
interface AMD64 extends Platform {
}
/*
* The standard operating systems that we support.
*/
interface LINUX extends Platform {
}
interface DARWIN extends Platform {
}
/*
* Standard leaf platforms, i.e., OS-architecture combinations that we support.
*/
final class LINUX_AMD64 implements LINUX, AMD64 {
}
final class DARWIN_AMD64 implements DARWIN, AMD64 {
}
/**
* Marker for elements (types, methods, or fields) that are only visible during native image
* generation and cannot be used at run time, regardless of the actual platform.
*/
final class HOSTED_ONLY implements Platform {
private HOSTED_ONLY() {
}
}
/**
* Returns true if the current platform (the platform that the native image is built for) is
* included in the provided platform group.
*
* The platformGroup must be a compile time constant, so that the call to this method can be
* replaced with the constant boolean result.
*/
static boolean includedIn(Class platformGroup) {
return platformGroup.isInstance(ImageSingletons.lookup(Platform.class));
}
}