Hi Here are the patches:
PoDoFo-mem-1.diff
Moves some member variables within PdfObject – saves space by reducing compiler
alignment padding
PoDoFo-mem-2.diff
Changes base type of EPdfDataType from int to uint8_t (on compilers that
support C++ 11) – the smaller type saves space and reduces compiler alignment
padding
Win 32-bit before
sizeof(PdfObject) = 64
sizeof(PdfVariant) = 32
sizeof(PdfReference) = 16
sizeof(PdfDataType) = 8
Win 32-bit after
sizeof(PdfObject) = 56
sizeof(PdfVariant) = 24
sizeof(PdfReference) = 16
sizeof(PdfDataType) = 8
moving PdfObject members saved 0 bytes in PdfObject
changing EPdfDataType to uint8_t saved 8 bytes in PdfVariant
PdfObject uses 12% less memory on 32-bit
PdfVariant uses 33% less memory on 32-bit
Mac 64-bit before
sizeof(PdfObject) = 80
sizeof(PdfVariant) = 32
sizeof(PdfReference) = 24
sizeof(PdfDataType) = 16
Mac 64-bit after
sizeof(PdfObject) = 64
sizeof(PdfVariant) = 24
sizeof(PdfReference) = 24
sizeof(PdfDataType) = 16
moving PdfObject members saved 8 bytes in PdfObject
changing EPdfDataType to uint8_t saved 8 bytes in PdfVariant
PdfObject uses 20% less memory on 64-bit
PdfVariant uses 33% less memory on 64-bit
I’ve tested compilation on XCode 8 / Clang and Visual C++ 2015
Cheers
Mark
Mark Rogers - mark.rog...@powermapper.com
PowerMapper Software Ltd - www.powermapper.com
Registered in Scotland No 362274 Quartermile 2 Edinburgh EH3 9GL
On 06/01/2017, 08:30, "zyx" <z...@litepdf.cz> wrote:
On Thu, 2017-01-05 at 18:59 +0000, Mark Rogers wrote:
> I’m not certain if PoDoFo makes any guarantees on binary
> compatibility between releases (although C++ makes it hard to provide
> any guarantees on binary compatibility). These patches will break
> binary compatibility (by changing the memory layout of member
> variables) but won’t affect source compatibility.
Hi,
as Mattia said, there is not problem with binary compatibility. I
already changed API, thus the soname version bump is required anyway.
> Do you want me to submit the patches?
Yes, please. The sooner the better, the code freeze is approaching
quickly.
Thanks and bye,
zyx
--
http://www.litePDF.cz i...@litepdf.cz
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PoDoFo-mem-2.diff
Description: PoDoFo-mem-2.diff
PoDoFo-mem-1.diff
Description: PoDoFo-mem-1.diff
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