194888 2019-02-20 17:53:05 -0800 BigInt should store its data in the primitive gigacage. 2019-11-18 00:25:19 -0800 1 1 1 Unclassified WebKit JavaScriptCore WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 keith_miller keith_miller ews-watchlist mark.lam msaboff saam tzagallo webkit-bug-importer ysuzuki oldest_to_newest 1508403 0 keith_miller 2019-02-20 17:53:05 -0800 BigInt should store its data in the primitive gigacage. 1510469 1 363098 keith_miller 2019-02-27 09:56:29 -0800 Created attachment 363098 Patch 1510470 2 363099 keith_miller 2019-02-27 10:01:03 -0800 Created attachment 363099 Patch 1510473 3 363100 keith_miller 2019-02-27 10:05:41 -0800 Created attachment 363100 Patch 1510503 4 363100 ysuzuki 2019-02-27 10:56:22 -0800 Comment on attachment 363100 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=363100&action=review > Source/JavaScriptCore/runtime/JSBigInt.h:245 > + CagedBarrierPtr<Gigacage::Primitive, Digit> m_data; Do we need to use CagedBarrierPtr instead of CagedPtr here? 1510506 5 363100 ysuzuki 2019-02-27 11:00:20 -0800 Comment on attachment 363100 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=363100&action=review > Source/JavaScriptCore/runtime/JSBigInt.cpp:74 > + Gigacage::free(Gigacage::Primitive, thisObject->dataStorage()); If we use CagedUniquePtr, we do not need to call this in JSBigInt::destroy. We can call thisObject-~JSBigInt(). 1511001 6 363100 keith_miller 2019-02-28 11:07:43 -0800 Comment on attachment 363100 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=363100&action=review >> Source/JavaScriptCore/runtime/JSBigInt.cpp:74 >> + Gigacage::free(Gigacage::Primitive, thisObject->dataStorage()); > > If we use CagedUniquePtr, we do not need to call this in JSBigInt::destroy. We can call thisObject-~JSBigInt(). Ohh, nice, I'll change. 1511033 7 363244 keith_miller 2019-02-28 11:38:54 -0800 Created attachment 363244 Patch 1511064 8 363244 saam 2019-02-28 12:41:09 -0800 Comment on attachment 363244 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=363244&action=review > Source/JavaScriptCore/runtime/JSBigInt.cpp:119 > JSBigInt* JSBigInt::createWithLengthUnchecked(VM& vm, unsigned length) > { > ASSERT(length <= maxLength); > - JSBigInt* bigInt = new (NotNull, allocateCell<JSBigInt>(vm.heap, allocationSize(length))) JSBigInt(vm, vm.bigIntStructure.get(), length); > + void* data = Gigacage::tryMalloc(Gigacage::Primitive, length * sizeof(Digit)); > + if (!data) > + return nullptr; > + > + JSBigInt* bigInt = new (NotNull, allocateCell<JSBigInt>(vm.heap)) JSBigInt(vm, vm.bigIntStructure.get(), reinterpret_cast<Digit*>(data), length); > bigInt->finishCreation(vm); > return bigInt; > } The point of this function is that we don't return nullptr. So this shouldn't be using tryMalloc. Perhaps somewhere earlier we should be tryMallocing and throwing an OOM? If you grep for callers of this, you'll see that we just assume it's non-null. 1590988 9 383732 ysuzuki 2019-11-17 23:03:21 -0800 Created attachment 383732 Patch 1590990 10 383732 mark.lam 2019-11-17 23:56:33 -0800 Comment on attachment 383732 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=383732&action=review r=me with fix. > Source/JavaScriptCore/runtime/JSBigInt.cpp:111 > + ASSERT(data); This is not strictly needed because malloc() should crash on failure to allocate, but I suppose it doesn't hurt. > Source/JavaScriptCore/runtime/JSBigInt.h:56 > JSBigInt(VM&, Structure*, unsigned length); Shouldn't this line be removed? This constructor doesn't exist anymore. 1590993 11 383732 ysuzuki 2019-11-18 00:21:00 -0800 Comment on attachment 383732 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=383732&action=review Thanks! >> Source/JavaScriptCore/runtime/JSBigInt.cpp:111 >> + ASSERT(data); > > This is not strictly needed because malloc() should crash on failure to allocate, but I suppose it doesn't hurt. Yeah, removing this is also OK. >> Source/JavaScriptCore/runtime/JSBigInt.h:56 >> JSBigInt(VM&, Structure*, unsigned length); > > Shouldn't this line be removed? This constructor doesn't exist anymore. Yes, we should remove it. Fixed. 1590994 12 ysuzuki 2019-11-18 00:24:07 -0800 Committed r252538: <https://trac.webkit.org/changeset/252538> 1590995 13 webkit-bug-importer 2019-11-18 00:25:19 -0800 <rdar://problem/57274577> 363098 2019-02-27 09:56:29 -0800 2019-02-27 10:00:59 -0800 Patch bug-194888-20190227095627.patch text/plain 5005 keith_miller U3VidmVyc2lvbiBSZXZpc2lvbjogMjQxNzMwCmRpZmYgLS1naXQgYS9Tb3VyY2UvSmF2YVNjcmlw dENvcmUvQ2hhbmdlTG9nIGIvU291cmNlL0phdmFTY3JpcHRDb3JlL0NoYW5nZUxvZwppbmRleCBi N2FiYzZlM2VlMGE3YTllMWNmMmUyNDUzOTMwZDI5ZGJmZTgwYjllLi4xMjUwZmZkOTMzNzEwZDZj ZDc5ZDRmZDQ2MTg1MGQ3MDhiMzAxOGMwIDEwMDY0NAotLS0gYS9Tb3VyY2UvSmF2YVNjcmlwdENv cmUvQ2hhbmdlTG9nCisrKyBiL1NvdXJjZS9KYXZhU2NyaXB0Q29yZS9DaGFuZ2VMb2cKQEAgLTEs MyArMSwxNyBAQAorMjAxOS0wMi0yNyAgS2VpdGggTWlsbGVyICA8a2VpdGhfbWlsbGVyQGFwcGxl LmNvbT4KKworICAgICAgICBCaWdJbnQgc2hvdWxkIHN0b3JlIGl0cyBkYXRhIGluIHRoZSBwcmlt aXRpdmUgZ2lnYWNhZ2UuCisgICAgICAgIGh0dHBzOi8vYnVncy53ZWJraXQub3JnL3Nob3dfYnVn 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