Subj : Re: JS_THREADSAFE /  assertion failed on rt->gcRunning
To   : netscape.public.mozilla.jseng
From : smaraux
Date : Tue Mar 08 2005 05:49 am

I had an unexpected call to a method calling JS from another Thread,
an architecture mistake which is now fixed.
Things are working flawlessly now. I didn't need JS_THREADSAFE tag.

Thank you Brendan.

Brendan Eich <brendan@meer.net> wrote in message news:<42288BDB.3000204@meer.net>...
> sebastien maraux wrote:
> > 
> > Here is my call stack when the assertion fails :
> > I call a function which should update data of my script :
> 
> 
> This stack is listed in the reverse of the normal order, but ok.
> 
> 
> > JS_CallFunctionValue(m_JSContext, m_GlobalObject, fval, 2, argv,
> > &rval);
> > -> js_InternalInvoke(JSContext *cx, JSObject *obj, jsval fval, uintN
> > flags,
> >                   uintN argc, jsval *argv, jsval *rval)
> > -> js_Invoke(JSContext *cx, uintN argc, uintN flags) //call a function
> > to move an object left
> > -> js_Interpret(cx, &v);
> > -> JSBool js_DefaultValue(JSContext *cx, JSObject *obj, JSType hint,
> > jsval *vp)
> > -> js_TryMethod(cx, obj, cx->runtime->atomState.toStringAtom, 0, NULL,
> > &v))
> > -> js_InternalInvoke(JSContext *cx, JSObject *obj, jsval fval, uintN
> > flags,
> >                   uintN argc, jsval *argv, jsval *rval)
> > -> js_Invoke() // call a function to draw moved object
> > -> (my function) fieldToString() // try to print its new position :
> > build a string from its vector position
> > -> JS_NewUCStringCopyZ
> > -> JS_NewString
> > -> js_AllocGCThing
> > -> assertion failed on JS_ASSERT(!rt->gcRunning);
> 
> 
> What is on the stack "below" JS_CallFunctionValue?  Please show the 
> entire stack.  Also please show all threads' stacks (I know you said you 
> used only one thread, but something left rt->gcRunning set, which means 
> either another thread is in the GC, was in it and died without crashing 
> the entire process, or a GC is nesting on this stack -- or you have an 
> inconsistent build of some sort).
> 
> /be

.