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| author | Yann Collet <yann.collet.73@gmail.com> | 2015-10-21 14:00:48 (GMT) |
|---|---|---|
| committer | Yann Collet <yann.collet.73@gmail.com> | 2015-10-21 14:00:48 (GMT) |
| commit | 2c80138121550c719cb0a622f6a8a304d283960c (patch) | |
| tree | 46bce3333d6966cf1806d545fbd2ef6ca4abe534 /lib/lz4hc.c | |
| parent | ff3324b8d5ca6d7144a09ce7cc5521284d741bea (diff) | |
| download | lz4-2c80138121550c719cb0a622f6a8a304d283960c.zip lz4-2c80138121550c719cb0a622f6a8a304d283960c.tar.gz lz4-2c80138121550c719cb0a622f6a8a304d283960c.tar.bz2 | |
heapmode macro option for lz4hc
Diffstat (limited to 'lib/lz4hc.c')
| -rw-r--r-- | lib/lz4hc.c | 39 |
1 files changed, 28 insertions, 11 deletions
diff --git a/lib/lz4hc.c b/lib/lz4hc.c index bbe7a9d..80bfa39 100644 --- a/lib/lz4hc.c +++ b/lib/lz4hc.c @@ -34,21 +34,29 @@ -/************************************** +/* ************************************* * Tuning Parameter -**************************************/ +***************************************/ static const int LZ4HC_compressionLevel_default = 9; +/*! + * HEAPMODE : + * Select how default compression function will allocate workplace memory, + * in stack (0:fastest), or in heap (1:requires malloc()). + * Since workplace is rather large, heap mode is recommended. + */ +#define LZ4HC_HEAPMODE 0 -/************************************** + +/* ************************************* * Includes -**************************************/ +***************************************/ #include "lz4hc.h" -/************************************** +/* ************************************* * Local Compiler Options -**************************************/ +***************************************/ #if defined(__GNUC__) # pragma GCC diagnostic ignored "-Wunused-function" #endif @@ -58,16 +66,16 @@ static const int LZ4HC_compressionLevel_default = 9; #endif -/************************************** +/* ************************************* * Common LZ4 definition -**************************************/ +***************************************/ #define LZ4_COMMONDEFS_ONLY #include "lz4.c" -/************************************** +/* ************************************* * Local Constants -**************************************/ +***************************************/ #define DICTIONARY_LOGSIZE 16 #define MAXD (1<<DICTIONARY_LOGSIZE) #define MAXD_MASK (MAXD - 1) @@ -549,8 +557,17 @@ int LZ4_compress_HC_extStateHC (void* state, const char* src, char* dst, int src int LZ4_compress_HC(const char* src, char* dst, int srcSize, int maxDstSize, int compressionLevel) { +#if LZ4HC_HEAPMODE==1 + LZ4HC_Data_Structure* statePtr = malloc(sizeof(LZ4HC_Data_Structure)); +#else LZ4HC_Data_Structure state; - return LZ4_compress_HC_extStateHC(&state, src, dst, srcSize, maxDstSize, compressionLevel); + LZ4HC_Data_Structure* const statePtr = &state; +#endif + int cSize = LZ4_compress_HC_extStateHC(statePtr, src, dst, srcSize, maxDstSize, compressionLevel); +#if LZ4HC_HEAPMODE==1 + free(statePtr); +#endif + return cSize; } |