Query directly for cache partition names

[Vicki Pfau]

The heuristic used in WebKit currently for detecting cache partitions fails in a sizable number of cases. We should call back into the system to ask it for the names of the partitions instead.

[Vicki Pfau]

Created attachment 197898 [details]
Patch

[David Kilzer (:ddkilzer)]

Comment on attachment 197898 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=197898&action=review

r=me  (Wow, that's a lot of indirection to get the list of origins.)

> Source/WebKit2/WebProcess/ResourceCache/WebResourceCacheManager.cpp:59
> +#if USE(CFURLCACHE)
> +    __block
> +#endif
>      MemoryCache::SecurityOriginSet origins;

I think it would be clearer to write it this way:

#if USE(CFURLCACHE)
    __block MemoryCache::SecurityOriginSet origins;
#else
    MemoryCache::SecurityOriginSet origins;
#endif

Also, should the #if check be this since it's the only time that 'origins' is used in a block?

#if USE(CFURLCACHE) && ENABLE(CACHE_PARTITIONING)
    __block MemoryCache::SecurityOriginSet origins;
#else
    MemoryCache::SecurityOriginSet origins;
#endif

[Vicki Pfau]

(In reply to comment #2)
> (From update of attachment 197898 [details])
> View in context: https://bugs.webkit.org/attachment.cgi?id=197898&action=review
> 
> r=me  (Wow, that's a lot of indirection to get the list of origins.)
> 
> > Source/WebKit2/WebProcess/ResourceCache/WebResourceCacheManager.cpp:59
> > +#if USE(CFURLCACHE)
> > +    __block
> > +#endif
> >      MemoryCache::SecurityOriginSet origins;
> 
> I think it would be clearer to write it this way:
> 
> #if USE(CFURLCACHE)
>     __block MemoryCache::SecurityOriginSet origins;
> #else
>     MemoryCache::SecurityOriginSet origins;
> #endif

I suppose it probably would be better style this way, yes.

> Also, should the #if check be this since it's the only time that 'origins' is used in a block?
> 
> #if USE(CFURLCACHE) && ENABLE(CACHE_PARTITIONING)
>     __block MemoryCache::SecurityOriginSet origins;
> #else
>     MemoryCache::SecurityOriginSet origins;
> #endif

Hm, yeah, I must have missed that, but you're right.

[Vicki Pfau]

Committed r148329: <http://trac.webkit.org/changeset/148329>

[Vicki Pfau]

<rdar://problem/13395445>

[Sam Weinig]

This should have been signed off by a WebKit2 owner.  Please try to remember that in the future.