Added Error.captureStackTrace function.

src/runtime.cc

 // Copyright 2006-2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 7390 matching lines @@
 static bool ShowFrameInStackTrace(StackFrame* raw_frame, Object* caller,
     bool* seen_caller) {
   // Only display JS frames.
   if (!raw_frame->is_java_script())
     return false;
   JavaScriptFrame* frame = JavaScriptFrame::cast(raw_frame);
   Object* raw_fun = frame->function();
   // Not sure when this can happen but skip it just in case.
   if (!raw_fun->IsJSFunction())
     return false;
-  if ((raw_fun == caller) && !(*seen_caller) && frame->IsConstructor()) {
+  if ((raw_fun == caller) && !(*seen_caller)) {
     *seen_caller = true;
     return false;
   }
-  // Skip the most obvious builtin calls.  Some builtin calls (such as
-  // Number.ADD which is invoked using 'call') are very difficult to
-  // recognize so we're leaving them in for now.
-  return !frame->receiver()->IsJSBuiltinsObject();
+  // Skip all frames until we've seen the caller.  Also, skip the most
+  // obvious builtin calls.  Some builtin calls (such as Number.ADD
+  // which is invoked using 'call') are very difficult to recognize
+  // so we're leaving them in for now.
+  return *seen_caller && !frame->receiver()->IsJSBuiltinsObject();
 }
 
 
 // Collect the raw data for a stack trace.  Returns an array of three
 // element segments each containing a receiver, function and native
 // code offset.
 static Object* Runtime_CollectStackTrace(Arguments args) {
   ASSERT_EQ(args.length(), 2);
   Object* caller = args[0];
   CONVERT_NUMBER_CHECKED(int32_t, limit, Int32, args[1]);
 
   HandleScope scope;
 
   int initial_size = limit < 10 ? limit : 10;
   Handle<JSArray> result = Factory::NewJSArray(initial_size * 3);
 
   StackFrameIterator iter;
-  bool seen_caller = false;
+  // If the caller parameter is a function we skip frames until we're
+  // under it before starting to collect.
+  bool seen_caller = !caller->IsJSFunction();
   int cursor = 0;
   int frames_seen = 0;
   while (!iter.done() && frames_seen < limit) {
     StackFrame* raw_frame = iter.frame();
     if (ShowFrameInStackTrace(raw_frame, caller, &seen_caller)) {
       frames_seen++;
       JavaScriptFrame* frame = JavaScriptFrame::cast(raw_frame);
       Object* recv = frame->receiver();
       Object* fun = frame->function();
       Address pc = frame->pc();
@@ skipping 112 matching lines @@
   } else {
     // Handle last resort GC and make sure to allow future allocations
     // to grow the heap without causing GCs (if possible).
     Counters::gc_last_resort_from_js.Increment();
     Heap::CollectAllGarbage();
   }
 }
 
 
 } }  // namespace v8::internal