| /* |
| * Copyright (c) 1998, 2003, 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * 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. |
| */ |
| |
| /* |
| * This source code is provided to illustrate the usage of a given feature |
| * or technique and has been deliberately simplified. Additional steps |
| * required for a production-quality application, such as security checks, |
| * input validation and proper error handling, might not be present in |
| * this sample code. |
| */ |
| |
| |
| package com.sun.tools.example.debug.bdi; //### does it belong here? |
| |
| import com.sun.jdi.*; |
| |
| public class Utils { |
| |
| /** |
| * Return the thread status description. |
| */ |
| public static String getStatus(ThreadReference thr) { |
| int status = thr.status(); |
| String result; |
| switch (status) { |
| case ThreadReference.THREAD_STATUS_UNKNOWN: |
| result = "unknown status"; |
| break; |
| case ThreadReference.THREAD_STATUS_ZOMBIE: |
| result = "zombie"; |
| break; |
| case ThreadReference.THREAD_STATUS_RUNNING: |
| result = "running"; |
| break; |
| case ThreadReference.THREAD_STATUS_SLEEPING: |
| result = "sleeping"; |
| break; |
| case ThreadReference.THREAD_STATUS_MONITOR: |
| result = "waiting to acquire a monitor lock"; |
| break; |
| case ThreadReference.THREAD_STATUS_WAIT: |
| result = "waiting on a condition"; |
| break; |
| default: |
| result = "<invalid thread status>"; |
| } |
| if (thr.isSuspended()) { |
| result += " (suspended)"; |
| } |
| return result; |
| } |
| |
| /** |
| * Return a description of an object. |
| */ |
| public static String description(ObjectReference ref) { |
| ReferenceType clazz = ref.referenceType(); |
| long id = ref.uniqueID(); //### TODO use real id |
| if (clazz == null) { |
| return toHex(id); |
| } else { |
| return "(" + clazz.name() + ")" + toHex(id); |
| } |
| } |
| |
| /** |
| * Convert a long to a hexadecimal string. |
| */ |
| public static String toHex(long n) { |
| char s1[] = new char[16]; |
| char s2[] = new char[18]; |
| |
| // Store digits in reverse order. |
| int i = 0; |
| do { |
| long d = n & 0xf; |
| s1[i++] = (char)((d < 10) ? ('0' + d) : ('a' + d - 10)); |
| } while ((n >>>= 4) > 0); |
| |
| // Now reverse the array. |
| s2[0] = '0'; |
| s2[1] = 'x'; |
| int j = 2; |
| while (--i >= 0) { |
| s2[j++] = s1[i]; |
| } |
| return new String(s2, 0, j); |
| } |
| |
| /** |
| * Convert hexadecimal strings to longs. |
| */ |
| public static long fromHex(String hexStr) { |
| String str = hexStr.startsWith("0x") ? |
| hexStr.substring(2).toLowerCase() : hexStr.toLowerCase(); |
| if (hexStr.length() == 0) { |
| throw new NumberFormatException(); |
| } |
| |
| long ret = 0; |
| for (int i = 0; i < str.length(); i++) { |
| int c = str.charAt(i); |
| if (c >= '0' && c <= '9') { |
| ret = (ret * 16) + (c - '0'); |
| } else if (c >= 'a' && c <= 'f') { |
| ret = (ret * 16) + (c - 'a' + 10); |
| } else { |
| throw new NumberFormatException(); |
| } |
| } |
| return ret; |
| } |
| |
| |
| /* |
| * The next two methods are used by this class and by EventHandler |
| * to print consistent locations and error messages. |
| */ |
| public static String locationString(Location loc) { |
| return loc.declaringType().name() + |
| "." + loc.method().name() + "(), line=" + |
| loc.lineNumber(); |
| } |
| |
| //### UNUSED. |
| /************************ |
| private String typedName(Method method) { |
| // TO DO: Use method.signature() instead of method.arguments() so that |
| // we get sensible results for classes without debugging info |
| StringBuffer buf = new StringBuffer(); |
| buf.append(method.name()); |
| buf.append("("); |
| Iterator it = method.arguments().iterator(); |
| while (it.hasNext()) { |
| buf.append(((LocalVariable)it.next()).typeName()); |
| if (it.hasNext()) { |
| buf.append(","); |
| } |
| } |
| buf.append(")"); |
| return buf.toString(); |
| } |
| ************************/ |
| |
| public static boolean isValidMethodName(String s) { |
| return isJavaIdentifier(s) || |
| s.equals("<init>") || |
| s.equals("<clinit>"); |
| } |
| |
| public static boolean isJavaIdentifier(String s) { |
| if (s.length() == 0) { |
| return false; |
| } |
| int cp = s.codePointAt(0); |
| if (! Character.isJavaIdentifierStart(cp)) { |
| return false; |
| } |
| for (int i = Character.charCount(cp); i < s.length(); i += Character.charCount(cp)) { |
| cp = s.codePointAt(i); |
| if (! Character.isJavaIdentifierPart(cp)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| } |