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Re: comments on Matrix

From: Rik Cabanier <cabanier@gmail.com>
Date: Fri, 22 Mar 2013 09:14:39 -0700
Message-ID: <CAGN7qDDUb1HkodOuHTdGv4Lion-sii7dB=t23m36CfDt5ieYzQ@mail.gmail.com>
To: robert@ocallahan.org
Cc: "Tab Atkins Jr." <jackalmage@gmail.com>, Benoit Jacob <jacob.benoit.1@gmail.com>, "public-fx@w3.org" <public-fx@w3.org>
On Fri, Mar 22, 2013 at 1:48 AM, Robert O'Callahan <robert@ocallahan.org>wrote:

> On Fri, Mar 22, 2013 at 7:48 AM, Rik Cabanier <cabanier@gmail.com> wrote:
>
>> On Thu, Mar 21, 2013 at 11:38 AM, Tab Atkins Jr. <jackalmage@gmail.com>wrote:
>>
>>> Only if you actually throw it.  It's not eagerly created every call.
>>>
>>
>> I worked a little with the mozilla code base and it seems that they
>> always create the object.
>> It's probably not a huge amount of overhead since it's not dynamically
>> allocated.
>>
>
> We certainly don't create a JS exception object if an exception is not
> actually thrown.
>

If a function is marked as throwing in the IDL, doesn't it get an exception
object as a parameter on the C++ side?
Received on Friday, 22 March 2013 16:15:09 GMT

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