43515 2010-08-04 15:28:32 -0700 Fix small design issues with PageAllocation, split out PageReservation. 2011-01-27 10:16:52 -0800 1 1 1 Unclassified WebKit JavaScriptCore 528+ (Nightly build) PC OS X 10.5 RESOLVED INVALID P2 Normal --- 51108 1 barraclough barraclough atwilson s.mathur webkit.review.bot oldest_to_newest 260244 0 barraclough 2010-08-04 15:28:32 -0700 The PageAllocation class has a number of issues. * Changes in bug #43269 accidentally switched SYMBIAN over to use malloc/free to allocate blocks of memory for the GC heap, instead of allocating RChunks. Revert this change in behaviour. * In order for PageAllocation to work correctly on WinCE we should be decommitting memory before deallocating. In order to simplify understanding the expected state at deallocate, split behaviour out into PageAllocation and PageReservation classes. Require that all memory be decommitted before calling deallocate on a PageReservation, add asserts to enforce this. * add many missing asserts. * inline more functions. * remove ability to create sub-PageAllocations from an existing PageAllocations object – this presented an interface that would allow sub regions to be deallocated, which would not have provided expected behaviour. * remove writable/executable arguments to commit, this value can be cached at the point the memory is reserved. * remove writable/executable arguments to allocateAligned, protection other than RW is not supported. * add missing checks for overflow & failed allocation to mmap path through allocateAligned. 260250 1 63504 barraclough 2010-08-04 15:41:12 -0700 Created attachment 63504 The patch 260254 2 webkit.review.bot 2010-08-04 15:43:26 -0700 Attachment 63504 did not pass style-queue: Failed to run "['WebKitTools/Scripts/check-webkit-style']" exit_code: 1 JavaScriptCore/wtf/PageAllocation.h:49: Alphabetical sorting problem. [build/include_order] [4] JavaScriptCore/wtf/PageAllocation.h:319: system_info is incorrectly named. Don't use underscores in your identifier names. [readability/naming] [4] JavaScriptCore/wtf/PageAllocation.h:348: page_size is incorrectly named. Don't use underscores in your identifier names. [readability/naming] [4] JavaScriptCore/runtime/Collector.h:62: BLOCK_SIZE is incorrectly named. Don't use underscores in your identifier names. [readability/naming] [4] Total errors found: 4 in 16 files If any of these errors are false positives, please file a bug against check-webkit-style. 260290 3 barraclough 2010-08-04 17:22:25 -0700 Fixed in r64695. 260304 4 atwilson 2010-08-04 17:44:57 -0700 Looks like this breaks the windows build: 1: c:\b\slave\webkit-rel-webkit-org\build\src\third_party\webkit\javascriptcore\wtf\PageReservation.h(220) : error C2597: illegal reference to non-static member 'WTF::PageReservation::m_protection' 2: c:\b\slave\webkit-rel-webkit-org\build\src\third_party\webkit\javascriptcore\wtf\PageReservation.h(221) : error C2597: illegal reference to non-static member 'WTF::PageReservation::m_protection' I'm going to roll this out. 263049 5 63504 abarth 2010-08-10 23:00:46 -0700 Comment on attachment 63504 The patch Clearing sam's r+. Looks like we'll need a new patch here. 322608 6 s.mathur 2010-12-15 08:22:46 -0800 Gavin, Could you please let us know if you intend to revisit this patch (the Symbian change specifically), or should we do it as part of Bug 51108? Either way is fine. Thanks! 323982 7 barraclough 2010-12-17 14:09:21 -0800 Hi Siddharth, I'm afraid I'm not going to have a chance to look at this again in the near future, I think Geoff has made some major changes to PageAllocation lately, so I doubt this patch can be merged up easily, I expect any fix will need a fresh implementation on ToT. cheers, G. 340909 8 s.mathur 2011-01-27 10:16:52 -0800 Resolving based on comment #7 63504 2010-08-04 15:41:12 -0700 2010-08-10 23:00:46 -0700 The patch PageReservation.patch text/plain 62100 barraclough SW5kZXg6IEphdmFTY3JpcHRDb3JlL0NoYW5nZUxvZwo9PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09Ci0tLSBKYXZhU2NyaXB0 Q29yZS9DaGFuZ2VMb2cJKHJldmlzaW9uIDY0Njg0KQorKysgSmF2YVNjcmlwdENvcmUvQ2hhbmdl TG9nCSh3b3JraW5nIGNvcHkpCkBAIC0zNSw2ICszNSw3OSBAQAogCiAyMDEwLTA4LTA0ICBHYXZp biBCYXJyYWNsb3VnaCAgPGJhcnJhY2xvdWdoQGFwcGxlLmNvbT4KIAorICAgICAgICBSZXZpZXdl ZCBieSBOT0JPRFkgKE9PUFMhKS4KKworICAgICAgICBCdWcgNDM1MTUgLSBGaXggc21hbGwgZGVz 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