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/* ObjectMap.java -- Contains a map of all objects keyed by their addresses.
Copyright (C) 2007 Free Software Foundation
This file is part of libgcj.
This software is copyrighted work licensed under the terms of the
Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
details. */
package gnu.gcj.tools.gc_analyze;
import java.io.BufferedReader;
import java.io.IOException;
import java.util.Iterator;
import java.util.Map;
import java.util.TreeMap;
class ObjectMap implements Iterable<Map.Entry<Long, ObjectMap.ObjectItem>>
{
class ObjectItem
{
int used;
int size;
int kind;
long klass;
long data;
long ptr;
String typeName;
String string; // only for string objects
boolean stringData; // character array pointed to by a string
ObjectItem reference; // object at reference points to this
ItemList points_to = new ItemList();
ItemList pointed_by = new ItemList();
}
private TreeMap<Long, ObjectItem> map = new TreeMap<Long, ObjectItem>();
public Iterator<Map.Entry<Long, ObjectItem>> iterator()
{
return map.entrySet().iterator();
}
public ObjectItem get(long ptr)
{
ObjectItem item = map.get(ptr);
return item;
}
public ObjectMap(BufferedReader reader) throws IOException
{
outer_loop:
for (;;)
{
String s = reader.readLine();
if (s == null)
break;
if (s.indexOf("Begin object map") >= 0)
{
for (;;)
{
s = reader.readLine();
if (s.indexOf("End object map") >= 0)
break outer_loop;
String[] items = s.split(",");
ObjectItem item = new ObjectItem();
long ptr = 0;
for (int i=0; i<items.length; i++)
{
String[] x = items[i].split(" ");
String last = x[x.length-1];
switch (i)
{
case 0:
item.used = Integer.parseInt(last);
break;
case 1:
ptr = MemoryMap.parseHexLong(last.substring(2));
break;
case 2:
item.size = Integer.parseInt(last);
break;
case 3:
item.kind = Integer.parseInt(last);
break;
case 4:
if (last.length() > 1)
item.klass =
MemoryMap.parseHexLong(last.substring(2));
else
item.klass = Integer.parseInt(last,16);
break;
case 5:
try
{
item.data =
Integer.parseInt(last.substring(2), 16);
}
catch (Exception e)
{
item.data = 0;
}
break;
}
}
item.ptr = ptr;
map.put(ptr, item);
} // inner loop
} // started inner loop
} // outer loop - finding begin
for (Map.Entry<Long, ObjectItem> me : this)
{
ObjectItem item = me.getValue();
if (item.data != 0)
{
// see if data is a pointer to a block
ObjectItem referenced = map.get(item.data);
if (referenced != null)
{
referenced.reference = item;
}
}
}
} // memoryMap
public void dump()
{
for (Map.Entry<Long, ObjectItem> me : this)
{
long ptr = me.getKey();
ObjectItem item = me.getValue();
System.out.println("ptr = " + Long.toHexString(ptr)
+ ", size = " + item.size
+ ", klass = " + Long.toHexString(item.klass)
+ ", kind = " + item.kind
+ ", data = " + item.data);
}
}
}
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