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Datei: Debug.java Sprache: JAVA

Original von: Isabelle^©

/*
* Debug.java - Various debugging flags
* :tabSize=4:indentSize=4:noTabs=false:
* :folding=explicit:collapseFolds=1:
*
* Copyright (C) 2003 Slava Pestov
*
* This program 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
* of the License, or any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

package org.gjt.sp.jedit;

/**
* This class contains various debugging flags (mainly useful for core
* development) and debugging routines.
* @since jEdit 4.2pre1
* @author Slava Pestov
* @version $Id: Debug.java 23981 2015-08-10 14:56:24Z daleanson $
*/
public class Debug
{
/**
* Print messages when the gap moves, and other offset manager state
* changes.
*/
public static boolean OFFSET_DEBUG = false;

/**
* Print messages when text area and display manager perform scroll
* updates.
*/
public static boolean SCROLL_DEBUG = false;

/**
* Print messages when text area tries to make the caret visible.
*/
public static boolean SCROLL_TO_DEBUG = false;

/**
* Display an error if the scrolling code detects an inconsistency.
* This kills performance!
*/
public static boolean SCROLL_VERIFY = false;

/**
* Print messages when screen line counts change.
*/
public static boolean SCREEN_LINES_DEBUG = false;

/**
* For checking context, etc.
*/
public static boolean TOKEN_MARKER_DEBUG = false;

/**
* For checking fold level invalidation, etc.
*/
public static boolean FOLD_DEBUG = false;

/**
* For checking the line visibility structure..
*/
public static boolean FOLD_VIS_DEBUG = false;

/**
* For checking invalidation, etc.
*/
public static boolean CHUNK_CACHE_DEBUG = false;

/**
* Paints boxes around chunks.
*/
public static boolean CHUNK_PAINT_DEBUG = false;

/**
* Show time taken to repaint text area painter.
*/
public static boolean PAINT_TIMER = false;

/**
* Show time taken for each EBComponent.
*/
public static boolean EB_TIMER = false;

/**
* Paint strings instead of glyph vectors.
*/
public static boolean DISABLE_GLYPH_VECTOR = false;

/**
* Logs messages when BeanShell code is evaluated.
*/
public static boolean BEANSHELL_DEBUG = false;

/** @deprecated no longer used. */
@Deprecated
public static boolean ALTERNATIVE_DISPATCHER = false;

/**
* If true, A+ shortcuts are disabled. If you use this, you should also
* remap the the modifiers so that A+ is actually something else.
* <b>On by default on MacOS.</b>
*/
public static boolean ALT_KEY_PRESSED_DISABLED = OperatingSystem.isMacOS();

/**
* Geometry workaround for X11.
*/
public static boolean GEOMETRY_WORKAROUND = false;

/**
* Dump key events received by text area?
*/
public static boolean DUMP_KEY_EVENTS = false;

/**
* Indent debug.
*/
public static boolean INDENT_DEBUG = false;

/**
* Printing debug.
*/
public static boolean PRINT_DEBUG = false;

/**
* Create new search dialogs instead of reusing instances.
* <b> Off by default on Mac OS because it can cause search dialogs to
* show up on the wrong space. </b>
*/
public static boolean DISABLE_SEARCH_DIALOG_POOL = OperatingSystem.isMacOS();

/**
* Disable multihead support, since it can cause window positioning
* problems with some Java versions.
* @since jEdit 4.3pre1
*/
public static boolean DISABLE_MULTIHEAD = false;

/**
* Does a computational delay. Simulates heavy computations for
* the given period of time. Used to force conditions that are
* hard to reproduce, for example deadlock cases.
* @param time Required delay, in ms
* @return an integer
*/
public static int compDelay(long time)
{
  long start = System.currentTimeMillis();
  long elapsed = 0;
  int a = 0, b = 0, c = 0;
  while (elapsed >= 0 && elapsed < time)
  {
   // These computations must be hard enough, so that
   // the compiler doesn't optimize them
   for (int i=0; i<500*1000; i++) {
    a = (b+1) * (c+1);
    b = (a+1) * (c+1);
    c = (a+1) * (b+1);
   }
   elapsed = System.currentTimeMillis() - start;
  }
  return a + b + c;
}
}

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