Initial revision
From-SVN: r102075
This commit is contained in:
Tom Tromey
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/* VMStackWalker.java -- Reference implementation of VM hooks for stack access
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Copyright (C) 2005 Free Software Foundation
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.classpath;
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/**
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* This class provides access to the classes on the Java stack
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* for reflection and security purposes.
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*
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* <p>
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* This class is only available to privileged code (i.e., code loaded
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* by the bootstrap loader).
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*
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* @author John Keiser
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* @author Eric Blake <ebb9@email.byu.edu>
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* @author Archie Cobbs
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*/
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public final class VMStackWalker
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{
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/**
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* Get a list of all the classes currently executing methods on the
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* Java stack. <code>getClassContext()[0]</code> is the class associated
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* with the currently executing method, i.e., the method that called
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* <code>VMStackWalker.getClassContext()</code> (possibly through
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* reflection). So you may need to pop off these stack frames from
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* the top of the stack:
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* <ul>
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* <li><code>VMStackWalker.getClassContext()</code>
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* <li><code>Method.invoke()</code>
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* </ul>
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*
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* @return an array of the declaring classes of each stack frame
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*/
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public static native Class[] getClassContext();
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/**
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* Get the class associated with the method invoking the method
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* invoking this method, or <code>null</code> if the stack is not
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* that deep (e.g., invoked via JNI invocation API). This method
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* is an optimization for the expression <code>getClassContext()[1]</code>
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* and should return the same result.
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*
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* <p>
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* VM implementers are encouraged to provide a more efficient
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* version of this method.
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*/
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public static Class getCallingClass()
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{
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Class[] ctx = getClassContext();
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if (ctx.length < 3)
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return null;
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return ctx[2];
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}
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/**
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* Get the class loader associated with the Class returned by
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* <code>getCallingClass()</code>, or <code>null</code> if no
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* such class exists or it is the boot loader. This method is an optimization
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* for the expression <code>getClassContext()[1].getClassLoader()</code>
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* and should return the same result.
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*
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* <p>
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* VM implementers are encouraged to provide a more efficient
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* version of this method.
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*/
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public static ClassLoader getCallingClassLoader()
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{
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Class[] ctx = getClassContext();
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if (ctx.length < 3)
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return null;
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return ctx[2].getClassLoader();
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}
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}
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@@ -0,0 +1,97 @@
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/* VMSystemProperties.java -- Allow the VM to set System properties.
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Copyright (C) 2004 Free Software Foundation
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
|
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.classpath;
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import java.util.Properties;
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class VMSystemProperties
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{
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/**
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* Get the system properties. This is done here, instead of in System,
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* because of the bootstrap sequence. Note that the native code should
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* not try to use the Java I/O classes yet, as they rely on the properties
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* already existing. The only safe method to use to insert these default
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* system properties is {@link Properties#setProperty(String, String)}.
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*
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* <p>These properties MUST include:
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* <dl>
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* <dt>java.version <dd>Java version number
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* <dt>java.vendor <dd>Java vendor specific string
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* <dt>java.vendor.url <dd>Java vendor URL
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* <dt>java.home <dd>Java installation directory
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* <dt>java.vm.specification.version <dd>VM Spec version
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* <dt>java.vm.specification.vendor <dd>VM Spec vendor
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* <dt>java.vm.specification.name <dd>VM Spec name
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* <dt>java.vm.version <dd>VM implementation version
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* <dt>java.vm.vendor <dd>VM implementation vendor
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* <dt>java.vm.name <dd>VM implementation name
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* <dt>java.specification.version <dd>Java Runtime Environment version
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* <dt>java.specification.vendor <dd>Java Runtime Environment vendor
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* <dt>java.specification.name <dd>Java Runtime Environment name
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* <dt>java.class.version <dd>Java class version number
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* <dt>java.class.path <dd>Java classpath
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* <dt>java.library.path <dd>Path for finding Java libraries
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* <dt>java.io.tmpdir <dd>Default temp file path
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* <dt>java.compiler <dd>Name of JIT to use
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* <dt>java.ext.dirs <dd>Java extension path
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* <dt>os.name <dd>Operating System Name
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* <dt>os.arch <dd>Operating System Architecture
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* <dt>os.version <dd>Operating System Version
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* <dt>file.separator <dd>File separator ("/" on Unix)
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* <dt>path.separator <dd>Path separator (":" on Unix)
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* <dt>line.separator <dd>Line separator ("\n" on Unix)
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* <dt>user.name <dd>User account name
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* <dt>user.home <dd>User home directory
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* <dt>user.dir <dd>User's current working directory
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* <dt>gnu.cpu.endian <dd>"big" or "little"
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* </dl>
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*
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* @param p the Properties object to insert the system properties into
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*/
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static native void preInit(Properties properties);
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/**
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* Here you get a chance to overwrite some of the properties set by
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* the common SystemProperties code. For example, it might be
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* a good idea to process the properties specified on the command
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* line here.
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*/
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static void postInit(Properties properties)
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{
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}
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}
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@@ -0,0 +1,64 @@
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/* VMPipe.java -- Reference implementation for VM hooks used by PipeImpl
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Copyright (C) 2004 Free Software Foundation
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
|
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with GNU Classpath; see the file COPYING. If not, write to the
|
||||
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
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02110-1301 USA.
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||||
|
||||
Linking this library statically or dynamically with other modules is
|
||||
making a combined work based on this library. Thus, the terms and
|
||||
conditions of the GNU General Public License cover the whole
|
||||
combination.
|
||||
|
||||
As a special exception, the copyright holders of this library give you
|
||||
permission to link this library with independent modules to produce an
|
||||
executable, regardless of the license terms of these independent
|
||||
modules, and to copy and distribute the resulting executable under
|
||||
terms of your choice, provided that you also meet, for each linked
|
||||
independent module, the terms and conditions of the license of that
|
||||
module. An independent module is a module which is not derived from
|
||||
or based on this library. If you modify this library, you may extend
|
||||
this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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||||
exception statement from your version. */
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package gnu.java.nio;
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import java.io.IOException;
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import java.nio.channels.spi.SelectorProvider;
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import gnu.classpath.Configuration;
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/**
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* This class contains the native methods for gnu.java.nio.PipeImpl
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* As such, it needs help from the VM.
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*
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* @author Patrik Reali
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*/
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final class VMPipe
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{
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static
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{
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// load the shared library needed for native methods.
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if (Configuration.INIT_LOAD_LIBRARY)
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{
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System.loadLibrary ("javanio");
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}
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}
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static native void init(PipeImpl self, SelectorProvider provider)
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throws IOException;
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}
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@@ -0,0 +1,59 @@
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/* VMSelector.java --
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Copyright (C) 2004 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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||||
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||||
GNU Classpath is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2, or (at your option)
|
||||
any later version.
|
||||
|
||||
GNU Classpath is distributed in the hope that it will be useful, but
|
||||
WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with GNU Classpath; see the file COPYING. If not, write to the
|
||||
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
||||
02110-1301 USA.
|
||||
|
||||
Linking this library statically or dynamically with other modules is
|
||||
making a combined work based on this library. Thus, the terms and
|
||||
conditions of the GNU General Public License cover the whole
|
||||
combination.
|
||||
|
||||
As a special exception, the copyright holders of this library give you
|
||||
permission to link this library with independent modules to produce an
|
||||
executable, regardless of the license terms of these independent
|
||||
modules, and to copy and distribute the resulting executable under
|
||||
terms of your choice, provided that you also meet, for each linked
|
||||
independent module, the terms and conditions of the license of that
|
||||
module. An independent module is a module which is not derived from
|
||||
or based on this library. If you modify this library, you may extend
|
||||
this exception to your version of the library, but you are not
|
||||
obligated to do so. If you do not wish to do so, delete this
|
||||
exception statement from your version. */
|
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package gnu.java.nio;
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import gnu.classpath.Configuration;
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import java.io.IOException;
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public final class VMSelector
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{
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static
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{
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// load the shared library needed for native methods.
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if (Configuration.INIT_LOAD_LIBRARY)
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{
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System.loadLibrary ("javanio");
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}
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}
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// A timeout value of 0 means block forever.
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static native int select (int[] read, int[] write,
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int[] except, long timeout)
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throws IOException;
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}
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