No need to preserve BacktraceElement object in Binding.

Saves cloning it for every block and binding we instantiate!

Author: headius

core/src/main/java/org/jruby/RubyProc.java

@@ -159,7 +159,9 @@ private void setup(Block procBlock) {
                     oldBinding.getFrame().duplicate(),
                     oldBinding.getVisibility(),
                     oldBinding.getDynamicScope(),
-                    oldBinding.getBacktrace().clone());
+                    oldBinding.getMethod(),
+                    oldBinding.getFile(),
+                    oldBinding.getLine());
             block = new Block(procBlock.getBody(), newBinding);
 
             // modify the block with a new backref/lastline-grabbing scope

core/src/main/java/org/jruby/runtime/Binding.java

@@ -47,7 +47,10 @@ public class Binding {
      * frame of method which defined this block
      */
     private final Frame frame;
-    private final BacktraceElement backtrace;
+
+    public String method;
+    public String filename;
+    public int line;
 
     private Visibility visibility;
     /**
@@ -75,36 +78,42 @@ public class Binding {
      * instances.
      */
     private Binding evalScopeBinding = this;
-    
+
     public Binding(IRubyObject self, Frame frame,
-                   Visibility visibility, DynamicScope dynamicScope, BacktraceElement backtrace) {
+                   Visibility visibility, DynamicScope dynamicScope, String method, String filename, int line) {
         this.self = self;
         this.frame = frame;
         this.visibility = visibility;
         this.dynamicScope = dynamicScope;
-        this.backtrace = backtrace;
+        this.method = method;
+        this.filename = filename;
+        this.line = line;
     }
 
     private Binding(IRubyObject self, Frame frame,
-                    Visibility visibility, DynamicScope dynamicScope, BacktraceElement backtrace, DynamicScope dummyScope) {
+                    Visibility visibility, DynamicScope dynamicScope, String method, String filename, int line, DynamicScope dummyScope) {
         this.self = self;
         this.frame = frame;
         this.visibility = visibility;
         this.dynamicScope = dynamicScope;
-        this.backtrace = backtrace;
+        this.method = method;
+        this.filename = filename;
+        this.line = line;
         this.dummyScope = dummyScope;
     }
 
-    public Binding(Frame frame, DynamicScope dynamicScope, BacktraceElement backtrace) {
+    public Binding(Frame frame, DynamicScope dynamicScope, String method, String filename, int line) {
         this.self = frame.getSelf();
         this.frame = frame;
         this.visibility = frame.getVisibility();
         this.dynamicScope = dynamicScope;
-        this.backtrace = backtrace;
+        this.method = method;
+        this.filename = filename;
+        this.line = line;
     }
 
     private Binding(Binding other) {
-        this(other.self, other.frame, other.visibility, other.dynamicScope, other.backtrace, other.dummyScope);
+        this(other.self, other.frame, other.visibility, other.dynamicScope, other.method, other.filename, other.line, other.dummyScope);
     }
 
     /**
@@ -173,32 +182,28 @@ public Frame getFrame() {
         return frame;
     }
 
-    public BacktraceElement getBacktrace() {
-        return backtrace;
-    }
-
     public String getFile() {
-        return backtrace.filename;
+        return filename;
     }
 
-    public void setFile(String file) {
-        backtrace.filename = file;
+    public void setFile(String filename) {
+        this.filename = filename;
     }
 
     public int getLine() {
-        return backtrace.line;
+        return line;
     }
 
     public void setLine(int line) {
-        backtrace.line = line;
+        this.line = line;
     }
 
     public String getMethod() {
-        return backtrace.method;
+        return method;
     }
 
     public void setMethod(String method) {
-        backtrace.method = method;
+        this.method = method;
     }
 
     public boolean equals(Object other) {
@@ -235,4 +240,32 @@ public final DynamicScope getEvalScope(Ruby runtime) {
 
         return evalScopeBinding.evalScope;
     }
+
+    @Deprecated
+    public Binding(IRubyObject self, Frame frame,
+                   Visibility visibility, DynamicScope dynamicScope, BacktraceElement backtrace) {
+        this.self = self;
+        this.frame = frame;
+        this.visibility = visibility;
+        this.dynamicScope = dynamicScope;
+        this.method = backtrace.method;
+        this.filename = backtrace.filename;
+        this.line = backtrace.line;
+    }
+
+    @Deprecated
+    public Binding(Frame frame, DynamicScope dynamicScope, BacktraceElement backtrace) {
+        this.self = frame.getSelf();
+        this.frame = frame;
+        this.visibility = frame.getVisibility();
+        this.dynamicScope = dynamicScope;
+        this.method = backtrace.method;
+        this.filename = backtrace.filename;
+        this.line = backtrace.line;
+    }
+
+    @Deprecated
+    public BacktraceElement getBacktrace() {
+        return new BacktraceElement(method, filename, line);
+    }
 }

core/src/main/java/org/jruby/runtime/Block.java

@@ -173,7 +173,13 @@ public Block cloneBlock() {
     public Block cloneBlockAndFrame() {
         Binding oldBinding = binding;
         Binding binding = new Binding(
-                oldBinding.getSelf(), oldBinding.getFrame().duplicate(), oldBinding.getVisibility(), oldBinding.getDynamicScope(), oldBinding.getBacktrace());
+                oldBinding.getSelf(),
+                oldBinding.getFrame().duplicate(),
+                oldBinding.getVisibility(),
+                oldBinding.getDynamicScope(),
+                oldBinding.getMethod(),
+                oldBinding.getFile(),
+                oldBinding.getLine());
 
         Block newBlock = new Block(body, binding);
 

core/src/main/java/org/jruby/runtime/MethodBlock.java

@@ -60,7 +60,7 @@ public static Block createMethodBlock(ThreadContext context, IRubyObject self, D
         Binding binding = new Binding(
                 frame,
                 dynamicScope,
-                new BacktraceElement(method.getMethodName(), body.getFile(), body.getLine()));
+                method.getMethodName(), body.getFile(), body.getLine());
 
         return new Block(body, binding);
     }

core/src/main/java/org/jruby/runtime/ThreadContext.java

@@ -1004,7 +1004,8 @@ public void setWithinTrace(boolean isWithinTrace) {
      */
     public Binding currentBinding() {
         Frame frame = getCurrentFrame().capture();
-        return new Binding(frame, getCurrentScope(), backtrace[backtraceIndex].clone());
+        BacktraceElement elt = backtrace[backtraceIndex];
+        return new Binding(frame, getCurrentScope(), elt.getMethod(), elt.getFilename(), elt.getLine());
     }
 
     /**
@@ -1014,7 +1015,8 @@ public Binding currentBinding() {
      */
     public Binding currentBinding(IRubyObject self) {
         Frame frame = getCurrentFrame().capture();
-        return new Binding(self, frame, frame.getVisibility(), getCurrentScope(), backtrace[backtraceIndex].clone());
+        BacktraceElement elt = backtrace[backtraceIndex];
+        return new Binding(self, frame, frame.getVisibility(), getCurrentScope(), elt.getMethod(), elt.getFilename(), elt.getLine());
     }
 
     /**
@@ -1026,7 +1028,8 @@ public Binding currentBinding(IRubyObject self) {
      */
     public Binding currentBinding(IRubyObject self, Visibility visibility) {
         Frame frame = getCurrentFrame().capture();
-        return new Binding(self, frame, visibility, getCurrentScope(), backtrace[backtraceIndex].clone());
+        BacktraceElement elt = backtrace[backtraceIndex];
+        return new Binding(self, frame, visibility, getCurrentScope(), elt.getMethod(), elt.getFilename(), elt.getLine());
     }
 
     /**
@@ -1038,7 +1041,8 @@ public Binding currentBinding(IRubyObject self, Visibility visibility) {
      */
     public Binding currentBinding(IRubyObject self, DynamicScope scope) {
         Frame frame = getCurrentFrame().capture();
-        return new Binding(self, frame, frame.getVisibility(), scope, backtrace[backtraceIndex].clone());
+        BacktraceElement elt = backtrace[backtraceIndex];
+        return new Binding(self, frame, frame.getVisibility(), scope, elt.getMethod(), elt.getFilename(), elt.getLine());
     }
 
     /**
@@ -1053,7 +1057,8 @@ public Binding currentBinding(IRubyObject self, DynamicScope scope) {
      */
     public Binding currentBinding(IRubyObject self, Visibility visibility, DynamicScope scope) {
         Frame frame = getCurrentFrame().capture();
-        return new Binding(self, frame, visibility, scope, backtrace[backtraceIndex].clone());
+        BacktraceElement elt = backtrace[backtraceIndex];
+        return new Binding(self, frame, visibility, scope, elt.getMethod(), elt.getFilename(), elt.getLine());
     }
 
     /**