We mark constructors as static in the parser because they are. This
allows us to just use the isStatic() for the IDLMember to mark our
declarations static.
To generate an example interface implementation, just "make
interfacename-example" in $objdir/dom/bindings. This will place files
called interfacename-example.h and interfacename-example.cpp in that
directory. For example, "make XMLHttpRequest-example" will get you
$objdir/dom/bindings/XMLHttpRequest-example.h and
$objdir/dom/bindings/XMLHttpRequest-example.cpp.
Attribute getters currently default to const methods, while setters
and operations default to non-const methods.
--HG--
rename : dom/bindings/BindingGen.py => dom/bindings/ExampleGen.py
There are several changes here:
1) When wrapping a callback interface object for JS, just extract the
underlying JSObject from inside it and hand that object out.
2) Flag callback interface descriptors as "not concrete" (only matters
for cases when they have constants on the interface object) and not
wrappercached (will catch bugs if someone tries to treat them as a
Gecko object).
3) Fix a preexisting bug in sequence wrapping where we'd try to
JS_DefineElement twice if we were wrapping a null value for a
sequence of nullable interface objects.
For new DOM proxies, we could probably use the Xray expando machinery for the
regular expando object as well, and free up one of the reserved slots. That's
more than I want to bite off for the moment, though.
I also decided not to block on bug 760095 and just kick the problem of globals
with new binding down the road a little bit.
The new setup is:
* Consequential interfaces with no explicit descriptor are still skipped.
* If no information is provided about an interface, an empty descriptor is
assumed.
* If a list is provided and the only entry is a worker descriptor, an empty
main-thread descriptor is assumed.
This patch enables sharing of an nsAttrValue's MiscContainer between nodes for style rules. MiscContainers of type eCSSStyleRule are now refcounted (with some clever struct packing to ensure that the amount of memory allocated for MiscContainer remains unchanged on 32 and 64 bit). This infrastructure can be used to share most MiscContainer types in the future if we find advantages to sharing other types than just eCSSStyleRuley. A cache mapping strings to MiscContainers has been added to nsHTMLCSSStyleSheet. MiscContainers can be shared between nsAttrValues when one nsAttrValue is SetTo another nsAttrValue or when there is a cache hit in this cache. This patch also adds the ability to tell a style rule that it belongs to an nsHTMLCSSStyleSheet, with appropriate accessor functions to separate that from the existing case of belonging to an nsCSSStyleSheet.
The primary use case is to reduce memory use for pages that have lots of inline style attributes with the same value. This can happen easily with large pages that are automatically generated. An (admittedly pathological) testcase in Bug 686975 sees over 250 MB of memory savings with this change. Reusing the same MiscContainer for multiple nodes saves the overhead of maintaining separate copies of the string containing the serialized value of the style attribute and of creating separate style rules for each node. Eliminating duplicate style rules enables further savings in layout through style context sharing. The testcase sees the amount of memory used by style contexts go from over 250 MB to 10 KB.
Because the cache is based on the text value of the style attribute, it will not handle attributes that have different text values but are parsed into identical style rules. We also do not attempt to share MiscContainers when the node's base URI differs from the document URI. The effect of these limitations is expected to be low.
