add sizecheck

darcs-hash:20040528022932-24bed-d4652becca0b558f358d6ef2688e5e3df2b8e46e.gz

diff --git a/src/com/brian_web/gcclass/SizeCheck.java b/src/com/brian_web/gcclass/SizeCheck.java
new file mode 100644 (file)
index 0000000..a77c5fa
--- /dev/null
+++ b/src/com/brian_web/gcclass/SizeCheck.java
@@ -0,0 +1,77 @@
+// Copyright (C) 2004 Brian Alliet
+
+package com.brian_web.gcclass;
+
+import java.util.*;
+import java.util.zip.*;
+import java.io.*;
+import org.apache.bcel.util.*;
+import org.apache.bcel.classfile.*;
+
+// This code is hideous... it is just a quick hack
+
+public class SizeCheck {
+    public static void main(String[] args) throws Exception {
+        if(args.length < 3) {
+            System.err.println("Usage SizeCheck classpath class1 ... [class n]");
+            System.exit(1);
+        }
+        String classpath = ClassPath.SYSTEM_CLASS_PATH + File.pathSeparator + args[0];
+        Repository repo = SyntheticRepository.getInstance(new ClassPath(classpath));
+        
+        List all= new ArrayList();
+        int alltotal=0;
+        for(int j=1;j<args.length;j++) {
+            String s = args[j];
+            if(s.endsWith(".class")) s = s.substring(0,s.length()-6).replace('/','.');
+            while(s.startsWith(".")) s = s.substring(1);
+            JavaClass c = repo.loadClass(s);
+            List stuff = new ArrayList();
+            ByteArrayOutputStream baos;
+            GZIPOutputStream gzos;
+            DataOutputStream dos;
+            int total = 0;
+            baos = new ByteArrayOutputStream();
+            gzos = new GZIPOutputStream(baos);
+            dos = new DataOutputStream(gzos);
+            c.getConstantPool().dump(dos);
+            gzos.finish();
+            total += baos.size();
+            stuff.add(new Stuff(baos.size(),"Constant Pool"));
+            Method[] methods = c.getMethods();
+            for(int i=0;i<methods.length;i++) {
+                baos = new ByteArrayOutputStream();
+                gzos = new GZIPOutputStream(baos);
+                dos = new DataOutputStream(gzos);
+                methods[i].dump(dos);
+                gzos.finish();
+                stuff.add(new Stuff(baos.size(),methods[i].getName()));
+                total += baos.size();
+            }
+            stuff.add(new Stuff(total,"Total"));
+            StringBuffer sb = new StringBuffer(s + ":\n");
+            Collections.sort(stuff);
+            for(int i=0;i<stuff.size();i++) {
+                Stuff st = (Stuff) stuff.get(i);
+                sb.append("\t" + st.size + (st.size < 1000 ? "\t\t" : "\t") + st.desc + "\n");
+            }
+            all.add(new Stuff(total,sb.toString()));
+            alltotal += total;
+        }
+        Collections.sort(all);
+        for(int i=0;i<all.size();i++) {
+            Stuff st = (Stuff) all.get(i);
+            System.out.println(st.size + ": " + st.desc);
+        }
+        System.out.println("Total: " + alltotal);
+    }
+    
+    public static class Stuff implements Comparable {
+        int size;
+        String desc;
+        public int compareTo(Object o_) {
+            Stuff o = (Stuff)o_;
+            return desc.equals("Total") ? 1 : o.desc.equals("Total") ? -1 : -(size - o.size); }
+        public Stuff(int size, String desc) { this.size = size; this.desc = desc; }
+    }
+}
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