58109 2011-04-07 18:16:31 -0700 Some Handle<T> cleanup 2011-04-07 23:34:54 -0700 1 1 1 Unclassified WebKit New Bugs 528+ (Nightly build) Other OS X 10.5 RESOLVED FIXED P2 Normal --- 1 ggaren ggaren oliver oldest_to_newest 381911 0 ggaren 2011-04-07 18:16:31 -0700 Some Handle<T> cleanup 381920 1 88750 ggaren 2011-04-07 18:30:25 -0700 Created attachment 88750 Patch 381999 2 88750 mjs 2011-04-07 22:06:24 -0700 Comment on attachment 88750 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=88750&action=review r=me, but see minor comments. > Source/JavaScriptCore/collector/handles/Global.h:36 > -/* > - A Global is a persistent handle whose lifetime is not limited to any given > - scope. Use Globals for data members and global variables. > -*/ > - > +// A Global is a persistent handle whose lifetime is not limited to any given scope. This is perhaps beyond the scope of this patch, but it seems a little odd for something named Global to be used for data members. > Source/JavaScriptCore/collector/handles/Global.h:94 > void set(JSGlobalData& globalData, ExternalType value) > { > - if (!value) { > - clear(); > - return; > - } > - if (!this->slot()) > - this->setSlot(globalData.allocateGlobalHandle()); > - internalSet(value); > + if (!slot()) > + setSlot(globalData.allocateGlobalHandle()); > + setWithWriteBarrier(value); > } Looking at this, the distinction between set() and setWithWriteBarrier() seems a little unclear. set() calls setWithWriteBarrier(), so isn't it equally "with write barrier"? Perhaps there is a better way to draw the distinction between the two functions. > Source/JavaScriptCore/collector/handles/Local.h:98 > +template <typename T> inline void Local<T>::setWithSlotCheck(ExternalType value) > +{ > + ASSERT(slot()); > + *slot() = value; > +} Is the assert here the alluded-to "slot check"? > Source/JavaScriptCore/runtime/WeakGCPtr.h:37 > +// A smart pointer that becomes 0 when the value it points to is garbage collected. > +template <typename T> class WeakGCPtr : public Handle<T> { Maybe it would be appropriate to rename this to WeakHandle or something? 382016 3 ggaren 2011-04-07 23:08:17 -0700 > > -/* > > - A Global is a persistent handle whose lifetime is not limited to any given > > - scope. Use Globals for data members and global variables. > > -*/ > > - > > +// A Global is a persistent handle whose lifetime is not limited to any given scope. > > This is perhaps beyond the scope of this patch, but it seems a little odd for something named Global to be used for data members. Yeah, a bit odd. I chose the name because it was a good opposite to "Local<T>", which is local to a given scope. I'm not sure what would be better. Maybe "Root" or "Persistent"? > Looking at this, the distinction between set() and setWithWriteBarrier() seems a little unclear. set() calls setWithWriteBarrier(), so isn't it equally "with write barrier"? Perhaps there is a better way to draw the distinction between the two functions. > > > Source/JavaScriptCore/collector/handles/Local.h:98 > > +template <typename T> inline void Local<T>::setWithSlotCheck(ExternalType value) > > +{ > > + ASSERT(slot()); > > + *slot() = value; > > +} > > Is the assert here the alluded-to "slot check"? I just renamed both to set. > > Source/JavaScriptCore/runtime/WeakGCPtr.h:37 > > +// A smart pointer that becomes 0 when the value it points to is garbage collected. > > +template <typename T> class WeakGCPtr : public Handle<T> { > > Maybe it would be appropriate to rename this to WeakHandle or something? Yeah, maybe WeakHandle<T>, Weak<T>, or WeakGlobal<T> would be better. I'll check with Oliver to see what he thinks. 382023 4 ggaren 2011-04-07 23:34:54 -0700 Committed r83259: <http://trac.webkit.org/changeset/83259> 88750 2011-04-07 18:30:25 -0700 2011-04-07 22:06:24 -0700 Patch bug-58109-20110407183024.patch text/plain 32274 ggaren SW5kZXg6IFNvdXJjZS9KYXZhU2NyaXB0Q29yZS9DaGFuZ2VMb2cKPT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PQotLS0gU291 cmNlL0phdmFTY3JpcHRDb3JlL0NoYW5nZUxvZwkocmV2aXNpb24gODMyMzYpCisrKyBTb3VyY2Uv SmF2YVNjcmlwdENvcmUvQ2hhbmdlTG9nCSh3b3JraW5nIGNvcHkpCkBAIC0xLDMgKzEsODggQEAK KzIwMTEtMDQtMDcgIEdlb2ZmcmV5IEdhcmVuICA8Z2dhcmVuQGFwcGxlLmNvbT4KKworICAgICAg ICBSZXZpZXdlZCBieSBOT0JPRFkgKE9PUFMhKS4KKworICAgICAgICBTb21lIEhhbmRsZTxUPiBj bGVhbnVwCisgICAgICAgIGh0dHBzOi8vYnVncy53ZWJraXQub3JnL3Nob3dfYnVnLmNnaT9pZD01 ODEwOQorCisgICAgICAgICogYnl0ZWNvZGUvU2FtcGxpbmdUb29sLmg6IFNvcnRlZCBhbHBoYWJl dGljYWxseSBiZWNhdXNlIHRoYXQncyB0aGUKKyAgICAgICAgV2ViS2l0IHN0eWxlLiBBZGRlZCBh 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