From 1611f81552b2f3271b1cf1ced0c58a182b09f79b Mon Sep 17 00:00:00 2001 From: Mark Rogers Date: Mon, 16 Jan 2017 16:43:12 +0000 Subject: [PATCH] PoDoFo: re-ordered members in PdfReference - shrinks sizeof(PdfObject) from 64-bytes to 56-bytes on 64-bit Mac (no effect on 32-bit Windows) --- Electrum/Mapper/Libs/podofo/src/base/PdfReference.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/Electrum/Mapper/Libs/podofo/src/base/PdfReference.h b/Electrum/Mapper/Libs/podofo/src/base/PdfReference.h index 27fcb30..6939af5 100644 --- a/Electrum/Mapper/Libs/podofo/src/base/PdfReference.h +++ b/Electrum/Mapper/Libs/podofo/src/base/PdfReference.h @@ -166,8 +166,13 @@ class PODOFO_API PdfReference : public PdfDataType { PODOFO_NOTHROW inline bool IsIndirect() const; private: - pdf_objnum m_nObjectNo; + // pdf_gennum (2 bytes) should appear before pdf_objnum (4 bytes) + // because this reduces sizeof(PdfObject) from 64 bytes to 56 bytes + // on 64-bit platforms by eliminating compiler alignment padding + // order has no effect on structure size on 32-bit platforms + // can save up 12.5% on some documents pdf_gennum m_nGenerationNo; + pdf_objnum m_nObjectNo; }; // ----------------------------------------------------- -- 2.2.1