[Webkit-unassigned] [Bug 46252] [Qt] [WebKit2] Shared memory design should be improved

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=46252





--- Comment #3 from Balazs Kelemen <kbalazs at webkit.org>  2010-09-22 11:10:09 PST ---
> 1) It is limited to 2MB on mac and it is not something normal users are going to change

I think this should be fixed in QSharedMemory with the trick we are using.

> 2) If an app crashes the shared memory is not freed, so we will have even less memory

Really? If all of the processes died or terminated that using the shared memory then the OS reclaims it, isn't it?

> 
> What do you have against I/O mapped memory? The memory is never being written to disk/flushed and we do not have any limit.

I find the files somewhat useless since on linux or windows you can allocate virtual address space without underlying files. If you cannot do it on mac then I am fine with the I/O mapped memory. (A comment should be added about that.) Anyway, we should fix the problems you mentioned in 4594.

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