On Fri, Aug 17, 2018 at 3:28 AM, <xiaoxub...@gmail.com> wrote:
>
> I am new to golang source code, and recently met a problem about
> understanding golang gc.
>
> In runtime/mgcwork.go: 114
>
> func (w *gcWork) put(obj uintptr) {
> flushed := false
> wbuf := w.wbuf1
> if wbuf == nil {
> w.init()
> wbuf = w.wbuf1
> // wbuf is empty at this point.
> } else if wbuf.nobj == len(wbuf.obj) { // why is this the condition that
> wbuf is full?
> ...
> }
>
>
>
>
> I don't understand why wbuf.nobj == len(wbuf.obj) is the condition that wbuf
> is full. Any help makes sense to me.
If you look at the definition of the workbuf type, you will see that
the obj field is an array. The nobj field counts the number of
elements that have been put in the array. When nobj is the length of
the array, there is no room for any more elements.
Ian
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