Initial revision

From-SVN: r102075

4 files changed, 328 insertions, 0 deletions

diff --git a/libjava/classpath/vm/reference/gnu/classpath/VMStackWalker.java b/libjava/classpath/vm/reference/gnu/classpath/VMStackWalker.java
new file mode 100644
index 0000000..28e4ce3
--- /dev/null
+++ b/libjava/classpath/vm/reference/gnu/classpath/VMStackWalker.java
@@ -0,0 +1,108 @@
+/* VMStackWalker.java -- Reference implementation of VM hooks for stack access
+   Copyright (C) 2005 Free Software Foundation
+
+This file is part of GNU Classpath.
+
+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. */
+
+package gnu.classpath;
+
+/**
+ * This class provides access to the classes on the Java stack
+ * for reflection and security purposes.
+ *
+ * <p>
+ * This class is only available to privileged code (i.e., code loaded
+ * by the bootstrap loader).
+ *
+ * @author John Keiser
+ * @author Eric Blake <ebb9@email.byu.edu>
+ * @author Archie Cobbs
+ */
+public final class VMStackWalker
+{
+  /**
+   * Get a list of all the classes currently executing methods on the
+   * Java stack. <code>getClassContext()[0]</code> is the class associated
+   * with the currently executing method, i.e., the method that called
+   * <code>VMStackWalker.getClassContext()</code> (possibly through
+   * reflection). So you may need to pop off these stack frames from
+   * the top of the stack:
+   * <ul>
+   * <li><code>VMStackWalker.getClassContext()</code>
+   * <li><code>Method.invoke()</code>
+   * </ul>
+   *
+   * @return an array of the declaring classes of each stack frame
+   */
+  public static native Class[] getClassContext();
+
+  /**
+   * Get the class associated with the method invoking the method
+   * invoking this method, or <code>null</code> if the stack is not
+   * that deep (e.g., invoked via JNI invocation API). This method
+   * is an optimization for the expression <code>getClassContext()[1]</code>
+   * and should return the same result.
+   *
+   * <p>
+   * VM implementers are encouraged to provide a more efficient
+   * version of this method.
+   */
+  public static Class getCallingClass()
+  {
+    Class[] ctx = getClassContext();
+    if (ctx.length < 3)
+      return null;
+    return ctx[2];
+  }
+
+  /**
+   * Get the class loader associated with the Class returned by
+   * <code>getCallingClass()</code>, or <code>null</code> if no
+   * such class exists or it is the boot loader. This method is an optimization
+   * for the expression <code>getClassContext()[1].getClassLoader()</code>
+   * and should return the same result.
+   *
+   * <p>
+   * VM implementers are encouraged to provide a more efficient
+   * version of this method.
+   */
+  public static ClassLoader getCallingClassLoader()
+  {
+    Class[] ctx = getClassContext();
+    if (ctx.length < 3)
+      return null;
+    return ctx[2].getClassLoader();
+  }
+}
+
diff --git a/libjava/classpath/vm/reference/gnu/classpath/VMSystemProperties.java b/libjava/classpath/vm/reference/gnu/classpath/VMSystemProperties.java
new file mode 100644
index 0000000..e7cb91f
--- /dev/null
+++ b/libjava/classpath/vm/reference/gnu/classpath/VMSystemProperties.java
@@ -0,0 +1,97 @@
+/* VMSystemProperties.java -- Allow the VM to set System properties.
+   Copyright (C) 2004 Free Software Foundation
+
+This file is part of GNU Classpath.
+
+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. */
+
+package gnu.classpath;
+
+import java.util.Properties;
+
+class VMSystemProperties
+{
+    /**
+     * Get the system properties. This is done here, instead of in System,
+     * because of the bootstrap sequence. Note that the native code should
+     * not try to use the Java I/O classes yet, as they rely on the properties
+     * already existing. The only safe method to use to insert these default
+     * system properties is {@link Properties#setProperty(String, String)}.
+     *
+     * <p>These properties MUST include:
+     * <dl>
+     * <dt>java.version         <dd>Java version number
+     * <dt>java.vendor          <dd>Java vendor specific string
+     * <dt>java.vendor.url      <dd>Java vendor URL
+     * <dt>java.home            <dd>Java installation directory
+     * <dt>java.vm.specification.version <dd>VM Spec version
+     * <dt>java.vm.specification.vendor  <dd>VM Spec vendor
+     * <dt>java.vm.specification.name    <dd>VM Spec name
+     * <dt>java.vm.version      <dd>VM implementation version
+     * <dt>java.vm.vendor       <dd>VM implementation vendor
+     * <dt>java.vm.name         <dd>VM implementation name
+     * <dt>java.specification.version    <dd>Java Runtime Environment version
+     * <dt>java.specification.vendor     <dd>Java Runtime Environment vendor
+     * <dt>java.specification.name       <dd>Java Runtime Environment name
+     * <dt>java.class.version   <dd>Java class version number
+     * <dt>java.class.path      <dd>Java classpath
+     * <dt>java.library.path    <dd>Path for finding Java libraries
+     * <dt>java.io.tmpdir       <dd>Default temp file path
+     * <dt>java.compiler        <dd>Name of JIT to use
+     * <dt>java.ext.dirs        <dd>Java extension path
+     * <dt>os.name              <dd>Operating System Name
+     * <dt>os.arch              <dd>Operating System Architecture
+     * <dt>os.version           <dd>Operating System Version
+     * <dt>file.separator       <dd>File separator ("/" on Unix)
+     * <dt>path.separator       <dd>Path separator (":" on Unix)
+     * <dt>line.separator       <dd>Line separator ("\n" on Unix)
+     * <dt>user.name            <dd>User account name
+     * <dt>user.home            <dd>User home directory
+     * <dt>user.dir             <dd>User's current working directory
+     * <dt>gnu.cpu.endian       <dd>"big" or "little"
+     * </dl>
+     *
+     * @param p the Properties object to insert the system properties into
+     */
+    static native void preInit(Properties properties);
+
+    /**
+     * Here you get a chance to overwrite some of the properties set by
+     * the common SystemProperties code. For example, it might be
+     * a good idea to process the properties specified on the command
+     * line here.
+     */
+    static void postInit(Properties properties)
+    {
+    }
+}
diff --git a/libjava/classpath/vm/reference/gnu/java/nio/VMPipe.java b/libjava/classpath/vm/reference/gnu/java/nio/VMPipe.java
new file mode 100644
index 0000000..11dd2aa
--- /dev/null
+++ b/libjava/classpath/vm/reference/gnu/java/nio/VMPipe.java
@@ -0,0 +1,64 @@
+/* VMPipe.java -- Reference implementation for VM hooks used by PipeImpl
+   Copyright (C) 2004 Free Software Foundation
+
+This file is part of GNU Classpath.
+
+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. */
+
+package gnu.java.nio;
+
+import java.io.IOException;
+import java.nio.channels.spi.SelectorProvider;
+import gnu.classpath.Configuration;
+
+/**
+ * This class contains the native methods for gnu.java.nio.PipeImpl
+ * As such, it needs help from the VM.
+ *
+ * @author Patrik Reali
+ */
+final class VMPipe
+{
+
+  static
+  {
+    // load the shared library needed for native methods.
+    if (Configuration.INIT_LOAD_LIBRARY)
+      {
+        System.loadLibrary ("javanio");
+      }
+  }
+
+  static native void init(PipeImpl self, SelectorProvider provider)
+    throws IOException;
+}
diff --git a/libjava/classpath/vm/reference/gnu/java/nio/VMSelector.java b/libjava/classpath/vm/reference/gnu/java/nio/VMSelector.java
new file mode 100644
index 0000000..488132d
--- /dev/null
+++ b/libjava/classpath/vm/reference/gnu/java/nio/VMSelector.java
@@ -0,0 +1,59 @@
+/* VMSelector.java -- 
+   Copyright (C) 2004 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+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. */
+
+package gnu.java.nio;
+
+import gnu.classpath.Configuration;
+import java.io.IOException;
+
+public final class VMSelector
+{
+  static
+  {
+    // load the shared library needed for native methods.
+    if (Configuration.INIT_LOAD_LIBRARY)
+      {
+        System.loadLibrary ("javanio");
+      }
+  }
+  
+  // A timeout value of 0 means block forever.
+  static native int select (int[] read, int[] write,
+                                        int[] except, long timeout)
+    throws IOException;
+
+}