jruby/core/src/main/java/org/jruby/platform/Platform.java at master · jruby/jruby · GitHub

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/***** BEGIN LICENSE BLOCK *****

* Version: EPL 2.0/GPL 2.0/LGPL 2.1

* The contents of this file are subject to the Eclipse Public

* 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.eclipse.org/legal/epl-v20.html

* Software distributed under the License is distributed on an "AS

* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or

* implied. See the License for the specific language governing

* rights and limitations under the License.

* Alternatively, the contents of this file may be used under the terms of

* either of the GNU General Public License Version 2 or later (the "GPL"),

* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),

* in which case the provisions of the GPL or the LGPL are applicable instead

* of those above. If you wish to allow use of your version of this file only

* under the terms of either the GPL or the LGPL, and not to allow others to

* use your version of this file under the terms of the EPL, indicate your

* decision by deleting the provisions above and replace them with the notice

* and other provisions required by the GPL or the LGPL. If you do not delete

* the provisions above, a recipient may use your version of this file under

* the terms of any one of the EPL, the GPL or the LGPL.

***** END LICENSE BLOCK *****/

package org.jruby.platform;

import org.jruby.util.SafePropertyAccessor;

import org.jruby.runtime.builtin.IRubyObject;

import java.nio.ByteOrder;

import java.util.HashMap;

import java.util.Map;

import org.jruby.runtime.Helpers;

/**

* Platform specific constants.

public abstract class Platform {

private Platform() { }

public String getPackageName() {

return String.format("%s.%s.%s", Platform.class.getPackage().getName(), OS, ARCH);

}

public String getOSPackageName() {

return String.format("%s.%s", Platform.class.getPackage().getName(), OS);

}

private static final String DARWIN = "darwin";

private static final String WINDOWS = "windows";

private static final String LINUX = "linux";

private static final String FREEBSD = "freebsd";

private static final String DRAGONFLYBSD = "dragonflybsd";

private static final String OPENBSD = "openbsd";

private static final String SOLARIS = "solaris";

private static final String OPENVMS = "openvms";

private static final String GCJ = "GNU libgcj";

private static final String IBM = "IBM J9 VM";

private static final String OPENJ9 = "Eclipse OpenJ9 VM";

private static String initOperatingSystem() {

String osname = getProperty("os.name", "unknown").toLowerCase();

switch (osname) {

case "mac os x" /* "Mac OS X" */ : return DARWIN;

}

if (osname.startsWith("windows")) {

return WINDOWS;

}

if (osname.startsWith("sunos")) {

return SOLARIS;

}

return osname;

}

private static String initArchitecture() {

String arch = getProperty("os.arch", "unknown").toLowerCase();

switch (arch) {

case "x86" : return "i386";

case "universal" : // OS X OpenJDK7 builds used to report "universal"

String bits = SafePropertyAccessor.getProperty("sun.arch.data.model");

if ("32".equals(bits)) {

System.setProperty("os.arch", "i386");

arch = "i386";

} else if ("64".equals(bits)) {

System.setProperty("os.arch", "x86_64");

arch = "x86_64";

}

return arch;

}

/**

* Gets the version of the Java platform that JRuby is running on.

private static int initJavaVersion() {

int version = 5;

try {

String versionString = SafePropertyAccessor.getProperty("java.version");

if (versionString != null) {

// remove additional version identifiers, e.g. -ea

versionString = versionString.split("-|\\+")[0];

String[] v = versionString.split("\\.");

if (v[0].equals("1")) {

// Pre Java 9, 1.x style

version = Integer.valueOf(v[1]);

} else {

// Java 9+, x.y.z style

version = Integer.valueOf(v[0]);

}

} catch (Exception ex) {

version = 0;

}

return version;

}

public static final String ARCH = initArchitecture();

public static final String OS = initOperatingSystem();

public static final String JVM = getProperty("java.vm.name", "unknown");

public static final String OS_VERSION = getProperty("os.version", "unknown");

/**

* An integer value representing the major Java/JDK release, e.g. 8 for java 1.8, 9 for java 9.

public static final int JAVA_VERSION = initJavaVersion();

public static final boolean IS_WINDOWS = OS.equals(WINDOWS);

public static final boolean IS_MAC = OS.equals(DARWIN);

public static final boolean IS_FREEBSD = OS.equals(FREEBSD);

public static final boolean IS_DRAGONFLYBSD = OS.equals(DRAGONFLYBSD);

public static final boolean IS_OPENBSD = OS.equals(OPENBSD);

public static final boolean IS_LINUX = OS.equals(LINUX);

public static final boolean IS_WSL = IS_LINUX && OS_VERSION.contains("Microsoft");

public static final boolean IS_SOLARIS = OS.equals(SOLARIS);

public static final boolean IS_BSD = IS_MAC || IS_FREEBSD || IS_OPENBSD || IS_DRAGONFLYBSD;

public static final boolean IS_OPENVMS = OS.equals(OPENVMS);

public static final String NAME = String.format("%s-%s", ARCH, OS);

public static final int BIG_ENDIAN = 4321;

public static final int LITTLE_ENDIAN = 1234;

public static final int BYTE_ORDER = ByteOrder.nativeOrder().equals(ByteOrder.BIG_ENDIAN) ? BIG_ENDIAN : LITTLE_ENDIAN;

public static final int BIT_WIDTH = jnr.ffi.Platform.getNativePlatform().is32Bit() ? 32 : 64;

public static final boolean IS_GCJ = JVM.equals(GCJ);

public static final boolean IS_J9 = JVM.equals(OPENJ9) || JVM.equals(IBM);

public static final boolean IS_IBM = IS_J9;

/**

* An extension over <code>System.getProperty</code> method.

* Handles security restrictions, and returns the default

* value if the access to the property is restricted.

* @param property The system property name.

* @param defValue The default value.

* @return The value of the system property,

* or the default value.

public static String getProperty(String property, String defValue) {

try {

return System.getProperty(property, defValue);

} catch (SecurityException se) {

return defValue;

}

jruby/core/src/main/java/org/jruby/platform/Platform.java at master · jruby/jruby · GitHub

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jruby/core/src/main/java/org/jruby/platform/Platform.java at master · jruby/jruby · GitHub

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