diff options
Diffstat (limited to 'lib/lz4hc.c')
| -rw-r--r-- | lib/lz4hc.c | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/lib/lz4hc.c b/lib/lz4hc.c index 45f1208..5549969 100644 --- a/lib/lz4hc.c +++ b/lib/lz4hc.c @@ -56,10 +56,6 @@ static const int LZ4HC_compressionLevel_default = 8; # pragma clang diagnostic ignored "-Wunused-function" #endif -#if defined(_MSC_VER) /* Visual Studio */ -# pragma warning(disable : 4201) /* disable: C4201: unnamed struct/union*/ -#endif - /************************************** Common LZ4 definition @@ -89,10 +85,7 @@ static const int g_maxCompressionLevel = 16; **************************************/ typedef struct { - union { - U64 alignedOn8Bytes; /* force 8-bytes alignment on 32-bits systems */ - U32 hashTable[HASHTABLESIZE]; - }; + U32 hashTable[HASHTABLESIZE]; U16 chainTable[MAXD]; const BYTE* end; /* next block here to continue on current prefix */ const BYTE* base; /* All index relative to this position */ @@ -156,7 +149,7 @@ FORCE_INLINE void LZ4HC_Insert (LZ4HC_Data_Structure* hc4, const BYTE* ip) } -FORCE_INLINE int LZ4HC_InsertAndFindBestMatch (LZ4HC_Data_Structure* hc4, // Index table will be updated +FORCE_INLINE int LZ4HC_InsertAndFindBestMatch (LZ4HC_Data_Structure* hc4, /* Index table will be updated */ const BYTE* ip, const BYTE* const iLimit, const BYTE** matchpos, const int maxNbAttempts) @@ -200,7 +193,7 @@ FORCE_INLINE int LZ4HC_InsertAndFindBestMatch (LZ4HC_Data_Structure* hc4, // I mlt = LZ4_count(ip+MINMATCH, match+MINMATCH, vLimit) + MINMATCH; if ((ip+mlt == vLimit) && (vLimit < iLimit)) mlt += LZ4_count(ip+mlt, base+dictLimit, iLimit); - if (mlt > ml) { ml = mlt; *matchpos = base + matchIndex; } // virtual matchpos + if (mlt > ml) { ml = mlt; *matchpos = base + matchIndex; } /* virtual matchpos */ } } matchIndex -= chainTable[matchIndex & 0xFFFF]; @@ -285,7 +278,10 @@ FORCE_INLINE int LZ4HC_InsertAndGetWiderMatch ( typedef enum { noLimit = 0, limitedOutput = 1 } limitedOutput_directive; -//static unsigned debug = 0; +#define LZ4HC_DEBUG 0 +#if LZ4HC_DEBUG +static unsigned debug = 0; +#endif FORCE_INLINE int LZ4HC_encodeSequence ( const BYTE** ip, @@ -299,7 +295,9 @@ FORCE_INLINE int LZ4HC_encodeSequence ( int length; BYTE* token; - //if (debug) printf("literal : %u -- match : %u -- offset : %u\n", (U32)(*ip - *anchor), (U32)matchLength, (U32)(*ip-match)); // debug +#if LZ4HC_DEBUG + if (debug) printf("literal : %u -- match : %u -- offset : %u\n", (U32)(*ip - *anchor), (U32)matchLength, (U32)(*ip-match)); +#endif /* Encode Literal length */ length = (int)(*ip - *anchor); @@ -589,7 +587,7 @@ int LZ4_compressHC_limitedOutput_withStateHC (void* state, const char* source, c * ************************************/ /* allocation */ LZ4_streamHC_t* LZ4_createStreamHC(void) { return (LZ4_streamHC_t*)malloc(sizeof(LZ4_streamHC_t)); } -int LZ4_freeStreamHC (LZ4_streamHC_t* LZ4_streamHCPtr) { free(LZ4_streamHCPtr); return 0; }; +int LZ4_freeStreamHC (LZ4_streamHC_t* LZ4_streamHCPtr) { free(LZ4_streamHCPtr); return 0; } /* initialization */ @@ -693,6 +691,7 @@ int LZ4_saveDictHC (LZ4_streamHC_t* LZ4_streamHCPtr, char* safeBuffer, int dictS streamPtr->base = streamPtr->end - endIndex; streamPtr->dictLimit = endIndex - dictSize; streamPtr->lowLimit = endIndex - dictSize; + if (streamPtr->nextToUpdate < streamPtr->dictLimit) streamPtr->nextToUpdate = streamPtr->dictLimit; } return dictSize; } |