Mercurial > hg > truffle
view c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/Logger.java @ 1422:3483ec571caf
* using reflected objects instead of oops
* removed scratch from allocatable registers
* instanceof xir snippet
* arraylength xir snippet
* exceptionobject xir snippet
* VMEntries and VMExits as interfaces
* calls to VMEntries and VMExits are routet through logging proxies
author | Lukas Stadler <lukas.stadler@oracle.com> |
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date | Mon, 02 Aug 2010 15:44:38 -0700 |
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package com.sun.hotspot.c1x; import java.lang.reflect.*; import java.util.*; public class Logger { private static final boolean ENABLED = true; private static final int SPACING = 2; private static Deque<Boolean> openStack = new LinkedList<Boolean>(); private static boolean open = false; private static int level = 0; public static void log(String message) { if (ENABLED) { if (open) { System.out.println("..."); open = false; } System.out.print(space(level)); System.out.println(message); } } public static void startScope(String message) { if (ENABLED) { if (open) { System.out.println("..."); open = false; } System.out.print(space(level)); System.out.print(message); openStack.push(open); open = true; level++; } } public static void endScope(String message) { if (ENABLED) { level--; if (open) System.out.println(message); else System.out.println(space(level) + "..." + message); open = openStack.pop(); } } private static String[] spaces = new String[50]; private static String space(int count) { assert count >= 0; String result; if (count >= spaces.length || spaces[count] == null) { StringBuilder str = new StringBuilder(); for (int i = 0; i < count * SPACING; i++) str.append(' '); result = str.toString(); if (count < spaces.length) spaces[count] = result; } else { result = spaces[count]; } return result; } public static String pretty(Object value) { if (value instanceof Method) { return "method \"" + ((Method) value).getName() + "\""; } else if (value instanceof Class<?>) { return "class \"" + ((Class<?>) value).getSimpleName() + "\""; } else if (value instanceof Void) { return "void"; } else if (value instanceof Integer) { if ((Integer) value < 10) return value.toString(); return value + " (0x" + Integer.toHexString((Integer) value) + ")"; } else if (value instanceof Long) { if ((Long) value < 10) return value + "l"; return value + "l (0x" + Long.toHexString((Long) value) + "l)"; } return value == null ? "null" : value.toString(); } }