--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/GraalCompiler/src/com/sun/c1x/debug/TTY.java	Wed Apr 27 11:50:44 2011 +0200
@@ -0,0 +1,239 @@
+/*
+ * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package com.sun.c1x.debug;
+
+import java.io.*;
+import java.util.regex.*;
+
+import com.sun.c1x.util.*;
+
+
+/**
+ * A collection of static methods for printing debug and informational output to a global {@link LogStream}.
+ * The output can be (temporarily) suppressed per thread through use of a {@linkplain Filter filter}.
+ *
+ * @author Doug Simon
+ */
+public class TTY {
+
+    /**
+     * Support for thread-local suppression of {@link TTY}.
+     *
+     * @author Doug Simon
+     */
+    public static class Filter {
+        private LogStream previous;
+        private final Thread thread = Thread.currentThread();
+
+        /**
+         * Creates an object that will suppress {@link TTY} for the current thread if the given filter does not
+         * {@linkplain #matches(String, Object) match} the given object. To revert the suppression state to how it was
+         * before this call, the {@link #remove()} method must be called on the suppression object.
+         *
+         * @param filter the pattern for matching. If {@code null}, then the match is successful. If it starts with "~",
+         *            then a regular expression {@linkplain Pattern#matches(String, CharSequence) match} is performed
+         *            where the regular expression is specified by {@code filter} without the "~" prefix. Otherwise, a
+         *            simple {@linkplain String#contains(CharSequence) substring} match is performed where {@code
+         *            filter} is the substring used.
+         * @param object an object whose {@linkplain Object#toString() string} value is matched against {@code filter}
+         */
+        public Filter(String filter, Object object) {
+            boolean suppressed = false;
+            if (filter != null) {
+                String input = object.toString();
+                if (filter.startsWith("~")) {
+                    suppressed = !Pattern.matches(filter.substring(1), input);
+                } else {
+                    suppressed = !input.contains(filter);
+                }
+                if (suppressed) {
+                    previous = out();
+                    out.set(LogStream.SINK);
+                }
+            }
+        }
+
+        /**
+         * Reverts the suppression state of {@link TTY} to how it was before this object was constructed.
+         */
+        public void remove() {
+            assert thread == Thread.currentThread();
+            if (previous != null) {
+                out.set(previous);
+            }
+        }
+    }
+
+    public static final String C1X_TTY_LOG_FILE_PROPERTY = "c1x.tty.file";
+
+    private static final LogStream log;
+    static {
+        PrintStream out = System.out;
+        String value = System.getProperty(C1X_TTY_LOG_FILE_PROPERTY);
+        if (value != null) {
+            try {
+                out = new PrintStream(new FileOutputStream(value));
+            } catch (FileNotFoundException e) {
+                Util.warning("Could not open log file " + value + ": " + e);
+            }
+        }
+        log = new LogStream(out);
+    }
+
+    private static final ThreadLocal<LogStream> out = new ThreadLocal<LogStream>() {
+        @Override
+        protected LogStream initialValue() {
+            return log;
+        };
+    };
+
+    public static boolean isSuppressed() {
+        return out.get() == LogStream.SINK;
+    }
+
+    /**
+     * Gets the thread-local log stream to which the static methods of this class send their output.
+     * This will either be a global log stream or the global {@linkplain LogStream#SINK sink} depending
+     * on whether any suppression {@linkplain Filter filters} are in effect for the current thread.
+     */
+    public static LogStream out() {
+        return out.get();
+    }
+
+    /**
+     * @see LogStream#print(String)
+     */
+    public static void print(String s) {
+        out().print(s);
+    }
+
+    /**
+     * @see LogStream#print(int)
+     */
+    public static void print(int i) {
+        out().print(i);
+    }
+
+    /**
+     * @see LogStream#print(long)
+     */
+    public static void print(long i) {
+        out().print(i);
+    }
+
+    /**
+     * @see LogStream#print(char)
+     */
+    public static void print(char c) {
+        out().print(c);
+    }
+
+    /**
+     * @see LogStream#print(boolean)
+     */
+    public static void print(boolean b) {
+        out().print(b);
+    }
+
+    /**
+     * @see LogStream#print(double)
+     */
+    public static void print(double d) {
+        out().print(d);
+    }
+
+    /**
+     * @see LogStream#print(float)
+     */
+    public static void print(float f) {
+        out().print(f);
+    }
+
+    /**
+     * @see LogStream#println(String)
+     */
+    public static void println(String s) {
+        out().println(s);
+    }
+
+    /**
+     * @see LogStream#println()
+     */
+    public static void println() {
+        out().println();
+    }
+
+    /**
+     * @see LogStream#println(int)
+     */
+    public static void println(int i) {
+        out().println(i);
+    }
+
+    /**
+     * @see LogStream#println(long)
+     */
+    public static void println(long l) {
+        out().println(l);
+    }
+
+    /**
+     * @see LogStream#println(char)
+     */
+    public static void println(char c) {
+        out().println(c);
+    }
+
+    /**
+     * @see LogStream#println(boolean)
+     */
+    public static void println(boolean b) {
+        out().println(b);
+    }
+
+    /**
+     * @see LogStream#println(double)
+     */
+    public static void println(double d) {
+        out().println(d);
+    }
+
+    /**
+     * @see LogStream#println(float)
+     */
+    public static void println(float f) {
+        out().println(f);
+    }
+
+    public static void print(String format, Object... args) {
+        out().printf(format, args);
+    }
+
+    public static void println(String format, Object... args) {
+        out().printf(format + "%n", args);
+    }
+
+    public static void fillTo(int i) {
+        out().fillTo(i, ' ');
+    }
+}