[vlc-devel] [vlc-commits] Remove libvlc_free

Steve Lhomme robux4 at ycbcr.xyz
Wed May 22 09:59:35 CEST 2019


On 2019-05-22 9:49, Rémi Denis-Courmont wrote:
> As I *already* noted, and as is widely documented outside.
> 
> On most platforms, C runtime is per process. On Windows, it's per 
> thread. Either way, the consequence is that the mere fact of calling the 
> CRT from within LibVLC functions ties the CRT of LibVLC and the calling 
> code.

I agree with that. It doesn't mean the host app has to take care of it 
if the language doesn't know about using C code and the libvlc DLL 
loading is done manually. libvlc_free() allowed this use.

free() is not exposed by libvlc, so how would an external app not 
written in C know where to find that free() call ? (which hopefully is 
not a macro to another runtime call)

> Le 22 mai 2019 10:20:06 GMT+03:00, Steve Lhomme <robux4 at ycbcr.xyz> a écrit :
> 
>     On 2019-05-20 14:15, Rémi Denis-Courmont wrote:
> 
>         Hi,
> 
>         There are no changes to the fact that LibVLC "leaks" the C runtime.
> 
> 
>     Where does it leak the C runtime ? I can understand the C ABI, but not
>     the C runtime. It's possible to load the DLL just knowing the ABI and
>     never touch the runtime or have to know about it.
> 
>     There's a difference between being tied to a C runtime and having to
>     link to it from any other language using libvlc.
> 
>         On most systems, you cannot mix runtimes in a process at all due to
>         namespace conflicts. On Windows, you have to stick to Win32 API
>         calls on
>         threads created by another runtime - something LibVLC does not do.
> 
>         Le 20 mai 2019 15:08:39 GMT+03:00, Steve Lhomme
>         <robux4 at ycbcr.xyz> a écrit :
> 
>         On 2019-05-20 13:24, Rémi Denis-Courmont wrote:
> 
>         Hi,
> 
>         No changes there.
> 
> 
>         I can see a patch makind changes in the code. You'll have to be more
>         specific.
> 
>         This is consistent with the existing doc and the reality.
> 
> 
>         You removed the documentation that specifically explained one
>         case where
>         using libvlc_free() was actually necessary.
> 
>         This comes from vlc.git.
>         -- 
>         Envoyé de mon appareil Android avec Courriel K-9 Mail. Veuillez
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