From 17b5cf451cfcd5ec614d1d4e1afd8daa8b5d8699 Mon Sep 17 00:00:00 2001 From: Bo Xu Date: Mon, 5 Jan 2015 10:48:34 -0800 Subject: Remove static declared SymbolDictCache. This is a follow up CL on https://codereview.chromium.org/761313004/ BUG=https://code.google.com/p/pdfium/issues/detail?id=93 R=brucedawson@chromium.org, tsepez@chromium.org Review URL: https://codereview.chromium.org/828183002 --- core/src/fxcodec/jbig2/JBig2_Context.cpp | 27 +++++++++++++-------------- core/src/fxcodec/jbig2/JBig2_Context.h | 7 +++++-- 2 files changed, 18 insertions(+), 16 deletions(-) (limited to 'core/src/fxcodec/jbig2') diff --git a/core/src/fxcodec/jbig2/JBig2_Context.cpp b/core/src/fxcodec/jbig2/JBig2_Context.cpp index fec6b5fb68..bcd16e7e14 100644 --- a/core/src/fxcodec/jbig2/JBig2_Context.cpp +++ b/core/src/fxcodec/jbig2/JBig2_Context.cpp @@ -16,8 +16,6 @@ // at the front. Even a tiny cache size like 2 makes a dramatic // difference for typical JBIG2 documents. const int kSymbolDictCacheMaxSize = 2; -typedef std::pair CJBig2_CachePair; -static std::list SymbolDictCache; void OutputBitmap(CJBig2_Image* pImage) { @@ -26,9 +24,9 @@ void OutputBitmap(CJBig2_Image* pImage) } } CJBig2_Context *CJBig2_Context::CreateContext(CJBig2_Module *pModule, FX_BYTE *pGlobalData, FX_DWORD dwGlobalLength, - FX_BYTE *pData, FX_DWORD dwLength, FX_INT32 nStreamType, IFX_Pause* pPause) + FX_BYTE *pData, FX_DWORD dwLength, FX_INT32 nStreamType, std::list* pSymbolDictCache, IFX_Pause* pPause) { - return new(pModule) CJBig2_Context(pGlobalData, dwGlobalLength, pData, dwLength, nStreamType, pPause); + return new(pModule)CJBig2_Context(pGlobalData, dwGlobalLength, pData, dwLength, nStreamType, pSymbolDictCache, pPause); } void CJBig2_Context::DestroyContext(CJBig2_Context *pContext) { @@ -37,11 +35,11 @@ void CJBig2_Context::DestroyContext(CJBig2_Context *pContext) } } CJBig2_Context::CJBig2_Context(FX_BYTE *pGlobalData, FX_DWORD dwGlobalLength, - FX_BYTE *pData, FX_DWORD dwLength, FX_INT32 nStreamType, IFX_Pause* pPause) + FX_BYTE *pData, FX_DWORD dwLength, FX_INT32 nStreamType, std::list* pSymbolDictCache, IFX_Pause* pPause) { if(pGlobalData && (dwGlobalLength > 0)) { JBIG2_ALLOC(m_pGlobalContext, CJBig2_Context(NULL, 0, pGlobalData, dwGlobalLength, - JBIG2_EMBED_STREAM, pPause)); + JBIG2_EMBED_STREAM, pSymbolDictCache, pPause)); } else { m_pGlobalContext = NULL; } @@ -61,6 +59,7 @@ CJBig2_Context::CJBig2_Context(FX_BYTE *pGlobalData, FX_DWORD dwGlobalLength, m_pSegment = NULL; m_dwOffset = 0; m_ProcessiveStatus = FXCODEC_STATUS_FRAME_READY; + m_pSymbolDictCache = pSymbolDictCache; } CJBig2_Context::~CJBig2_Context() { @@ -808,11 +807,11 @@ FX_INT32 CJBig2_Context::parseSymbolDict(CJBig2_Segment *pSegment, IFX_Pause* pP } pSegment->m_nResultType = JBIG2_SYMBOL_DICT_POINTER; for(std::list::iterator it = - SymbolDictCache.begin(); it != SymbolDictCache.end(); ++it) { + m_pSymbolDictCache->begin(); it != m_pSymbolDictCache->end(); ++it) { if (it->first == key) { pSegment->m_Result.sd = it->second->DeepCopy(); - SymbolDictCache.push_front(*it); - SymbolDictCache.erase(it); + m_pSymbolDictCache->push_front(*it); + m_pSymbolDictCache->erase(it); cache_hit = true; break; } @@ -837,12 +836,12 @@ FX_INT32 CJBig2_Context::parseSymbolDict(CJBig2_Segment *pSegment, IFX_Pause* pP m_pStream->alignByte(); } CJBig2_SymbolDict *value = pSegment->m_Result.sd->DeepCopy(); - if (value) { - while (SymbolDictCache.size() >= kSymbolDictCacheMaxSize) { - delete SymbolDictCache.back().second; - SymbolDictCache.pop_back(); + if (value && kSymbolDictCacheMaxSize > 0) { + while (m_pSymbolDictCache->size() >= kSymbolDictCacheMaxSize) { + delete m_pSymbolDictCache->back().second; + m_pSymbolDictCache->pop_back(); } - SymbolDictCache.push_front(CJBig2_CachePair(key, value)); + m_pSymbolDictCache->push_front(CJBig2_CachePair(key, value)); } } if(wFlags & 0x0200) { diff --git a/core/src/fxcodec/jbig2/JBig2_Context.h b/core/src/fxcodec/jbig2/JBig2_Context.h index 90bd7ddbbe..f46530e005 100644 --- a/core/src/fxcodec/jbig2/JBig2_Context.h +++ b/core/src/fxcodec/jbig2/JBig2_Context.h @@ -13,6 +13,8 @@ #include "JBig2_GeneralDecoder.h" #include "../../../include/fxcodec/fx_codec_def.h" #include "../../../include/fxcrt/fx_basic.h" +#include +typedef std::pair CJBig2_CachePair; typedef enum { JBIG2_OUT_OF_PAGE = 0, JBIG2_IN_PAGE, @@ -36,7 +38,7 @@ class CJBig2_Context : public CJBig2_Object public: static CJBig2_Context *CreateContext(CJBig2_Module *pModule, FX_BYTE *pGlobalData, FX_DWORD dwGlobalLength, - FX_BYTE *pData, FX_DWORD dwLength, FX_INT32 nStreamType, IFX_Pause* pPause = NULL); + FX_BYTE *pData, FX_DWORD dwLength, FX_INT32 nStreamType, std::list* pSymbolDictCache, IFX_Pause* pPause = NULL); static void DestroyContext(CJBig2_Context *pContext); @@ -55,7 +57,7 @@ public: private: CJBig2_Context(FX_BYTE *pGlobalData, FX_DWORD dwGlobalLength, - FX_BYTE *pData, FX_DWORD dwLength, FX_INT32 nStreamType, IFX_Pause* pPause); + FX_BYTE *pData, FX_DWORD dwLength, FX_INT32 nStreamType, std::list* pSymbolDictCache, IFX_Pause* pPause); ~CJBig2_Context(); @@ -131,5 +133,6 @@ private: CJBig2_Segment *m_pSegment; FX_DWORD m_dwOffset; JBig2RegionInfo m_ri; + std::list* m_pSymbolDictCache; }; #endif -- cgit v1.2.3