1525866 - Add IPDLParamTraits<Tuple<Ts...>>

Status: RESOLVED FIXED

(Core :: IPC, enhancement, P3)

Description

[Andreas Farre [:farre]]

With a IPDLParamTraitgits<Tuple<Ts...>> you can write serialization/deserialization code that uses tuples as intermediaries:

template <typename>
struct IPDLParamTraits<Foo> {
static void Write(IPC::Message* aMsg, IProtocol* aActor, const Foo& aFoo) {
WriteIPDLParam(aMsg, aActor, MakeTuple(aFoo->Tuple()));
}

static bool Read(const IPC::Message* aMessage, PickleIterator* aIterator,
IProtocol* aActor, Foo* aFoo) {
Foo* foo = new Foo;
auto result = foo->Tie();
return ReadIPDLParam(aMessage, aIterator, aActor, &result);
}
}

which is very useful if Foo is somehow generated, and Foo::Tuple and Foo::Tie returning a tuple and a tie of a tuple. That way Foo can change, but it's IPDLParamTraits can stay the same.

Comment 1

[Andreas Farre [:farre]]

Attachment: Bug 1525866 - Add IPDLParamTraits<Tuple<Ts...>>.

Add support for serializing/deserializing tuples.

Comment 2

[Andreas Farre [:farre]]

Try: https://treeherder.mozilla.org/#/jobs?repo=try&revision=48001ecdbab36dc559edd8f4e53a1d73f553eedb&group_state=expanded&selectedJob=226861240

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/f830ab8c7d66
Add IPDLParamTraits<Tuple<Ts...>>. r=froydnj

Comment 4

[Daniel Varga [:dvarga]]

https://hg.mozilla.org/mozilla-central/rev/f830ab8c7d66