Subj : Is this gc-safe
To   : netscape.public.mozilla.jseng
From : Thomas Sondergaard
Date : Wed Aug 31 2005 10:35 am

On my javascript object I want a property called 'geometry' that returns 
an array with the upper left and lower right corners of a box, ie. the 
value of the property might be: [ [0,0], [1,1] ].

This is the body of the getter function for the property. I wonder if 
this is okay, or do I need to root the objects as I create them to avoid 
garbage collection?

	vector<double> ul = getUpperLeftCorner();
	vector<double> lr = getLowerRightCorner();
	jsval ulj[2] = {
	  DOUBLE_TO_JSVAL(JS_NewDouble(ctx, ul[0])),
	  DOUBLE_TO_JSVAL(JS_NewDouble(ctx, ul[1])),
	};
	jsval lrj[2] = {
	  DOUBLE_TO_JSVAL(JS_NewDouble(ctx, lr[0])),
	  DOUBLE_TO_JSVAL(JS_NewDouble(ctx, lr[1])),
	};
	jsval ret[2] = {
	  OBJECT_TO_JSVAL(JS_NewArrayObject(ctx, 2, ulj)),
	  OBJECT_TO_JSVAL(JS_NewArrayObject(ctx, 2, lrj))
	};
	*vp = OBJECT_TO_JSVAL(JS_NewArrayObject(ctx, 2, ret));
	return JS_TRUE;


What jsapi function calls can invoke the gc?

Thanks in advance,

Thomas

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