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test/tools/javac/Paths/SameJVM.java@93012e2a5d1d (annotated)

test/tools/javac/Paths/SameJVM.java

Sat, 07 Nov 2020 10:30:02 +0800

author

aoqi

date

Sat, 07 Nov 2020 10:30:02 +0800

changeset 3938

93012e2a5d1d

parent 2525

2eb010b6cb22

permissions

-rw-r--r--

Added tag mips-jdk8u275-b01 for changeset eb6ee6a5f2fe

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*/
aoqi@0	23
aoqi@0	24	/*
aoqi@0	25	* Support routines to allow running `javac' or `jar' within the same JVM.
aoqi@0	26	*/
aoqi@0	27
aoqi@0	28	import java.io.*;
aoqi@0	29	import java.net.*;
aoqi@0	30	import java.lang.reflect.*;
aoqi@0	31
aoqi@0	32	class SameJVM {
aoqi@0	33
aoqi@0	34	private static ClassLoader toolsClassLoader() {
aoqi@0	35	File javaHome = new File(System.getProperty("java.home"));
aoqi@0	36	File classesDir = new File(javaHome, "classes");
aoqi@0	37	File libDir = new File(javaHome.getParentFile(), "lib");
aoqi@0	38	File toolsJar = new File(libDir, "tools.jar");
aoqi@0	39	try {
aoqi@0	40	return new URLClassLoader(
aoqi@0	41	new URL[] {classesDir.toURL(), toolsJar.toURL()});
aoqi@0	42	} catch (MalformedURLException e) { throw new AssertionError(e); }
aoqi@0	43	}
aoqi@0	44	private static final ClassLoader cl = toolsClassLoader();
aoqi@0	45
aoqi@0	46	static void javac(String... args) throws Exception {
aoqi@0	47	Class c = Class.forName("com.sun.tools.javac.Main", true, cl);
aoqi@0	48	int status = (Integer)
aoqi@0	49	c.getMethod("compile", new Class[] {String[].class})
aoqi@0	50	.invoke(c.newInstance(), new Object[] {args});
aoqi@0	51	if (status != 0)
aoqi@0	52	throw new Exception("javac failed: status=" + status);
aoqi@0	53	}
aoqi@0	54
aoqi@0	55	static void jar(String... args) throws Exception {
aoqi@0	56	Class c = Class.forName("sun.tools.jar.Main", true, cl);
aoqi@0	57	Object instance = c.getConstructor(
aoqi@0	58	new Class[] {PrintStream.class, PrintStream.class, String.class})
aoqi@0	59	.newInstance(System.out, System.err, "jar");
aoqi@0	60	boolean result = (Boolean)
aoqi@0	61	c.getMethod("run", new Class[] {String[].class})
aoqi@0	62	.invoke(instance, new Object[] {args});
aoqi@0	63	if (! result)
aoqi@0	64	throw new Exception("jar failed");
aoqi@0	65	}
aoqi@0	66	}