Merge 92143 - .: REGRESSION (r39725?): Resources removed from document can not be freed until the...

Merge 92143 - .: REGRESSION (r39725?): Resources removed from document can not be freed until the document is deleted
https://bugs.webkit.org/show_bug.cgi?id=61006

Patch by Scott Graham <scottmg@chromium.org>; on 2011-08-01
Reviewed by Antti Koivisto.

Update exports for test harness.

* Source/autotools/symbols.filter:

Source/WebCore: REGRESSION (r39725?): Resources removed from document can not be freed
until the document is deleted
https://bugs.webkit.org/show_bug.cgi?id=61006

Patch by Scott Graham <scottmg@chromium.org>; on 2011-08-01
Reviewed by Antti Koivisto.

Upon completing a load start a Timer to iterate through
CachedResourceLoader's m_documentResources map to check for any items
that have only one reference (thus being the reference in the map
itself). The map should really be weak, but because the
CachedResourceHandle achieves bookkeeping work in addition to
reference counting, this is a simpler and more localized way to free
the used memory while maintaining the other behaviour (when
CachedResource is used as proxy).

With this patch the testcase at
https://bugs.webkit.org/attachment.cgi?id=93850 should no longer
consume 400MB of ram on load. Test added for crash discovered in
previous revision, but no tests for memory usage.

Test: http/tests/inspector/network/disabled-cache-crash.html

* WebCore.exp.in:
* loader/cache/CachedResource.h:
(WebCore::CachedResource::hasOneHandle):
* loader/cache/CachedResourceLoader.cpp:
(WebCore::CachedResourceLoader::CachedResourceLoader):
(WebCore::CachedResourceLoader::loadDone):
(WebCore::CachedResourceLoader::garbageCollectDocumentResourcesTimerFired):
* loader/cache/CachedResourceLoader.h:
* testing/Internals.cpp:
(WebCore::Internals::disableMemoryCache):
* testing/Internals.h:
* testing/Internals.idl:

Source/WebKit2: REGRESSION (r39725?): Resources removed from document can not be freed until the document is deleted
https://bugs.webkit.org/show_bug.cgi?id=61006

Patch by Scott Graham <scottmg@chromium.org>; on 2011-08-01
Reviewed by Antti Koivisto.

Update exports for test harness.

* win/WebKit2.def:
* win/WebKit2CFLite.def:

LayoutTests: https://bugs.webkit.org/show_bug.cgi?id=61006

Test for CachedResourceLoader. Not caused by cache-disabling but very
difficult to reproduce when cache is active, so use cache disable in
inspector to exercise code.

Patch by Scott Graham <scottmg@chromium.org>; on 2011-08-01
Reviewed by Antti Koivisto.

* http/tests/inspector/network/disabled-cache-crash-expected.txt: Added.
* http/tests/inspector/network/disabled-cache-crash.html: Added.
* platform/gtk/Skipped:
* platform/mac/Skipped:
* platform/qt/Skipped:
* platform/win/Skipped:

TBR=commit-queue@webkit.org
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=92204