[webkit-help] Passing RefPtr<T> to function expecting Ref<T>

[Konstantin Tokarev]

Hello,

What is the most appropriate way to do subject, given that ptr is RefPtr<T>?

1. f(*ptr)
2. f(ptr.releaseNonNull())

Any difference when ptr is lvalue or rvalue?

[Ryosuke Niwa]

Post by Konstantin Tokarev
Hello,
What is the most appropriate way to do subject, given that ptr is RefPtr<T>?
1. f(*ptr)
2. f(ptr.releaseNonNull())

Both forms are depending on what you're trying to do. 1 is appropriate
and necessary if ptr is used after the call to f but it results in an
unnecessary ref-churn if ptr is never used after the call. 2 is
appropriate if ptr is never after the call, and would avoid a
ref-churn.

- R. Niwa

[Konstantin Tokarev]

Post by Ryosuke Niwa

 Hello,
 What is the most appropriate way to do subject, given that ptr is RefPtr<T>?
 1. f(*ptr)
 2. f(ptr.releaseNonNull())

Both forms are depending on what you're trying to do. 1 is appropriate
and necessary if ptr is used after the call to f but it results in an
unnecessary ref-churn if ptr is never used after the call. 2 is
appropriate if ptr is never after the call, and would avoid a
ref-churn.
- R. Niwa

Thanks!