AuroraMiddleware/zstd
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increases randomness of ddict ptrs

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This commit is contained in:
Yann Collet 2018-08-28 18:13:46 -07:00
parent 6c398df241
commit 6444c50035
1 changed files with 10 additions and 3 deletions
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13
contrib/largeNbDicts/largeNbDicts.c
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@ -237,6 +237,12 @@ static ddict_collection_t createDDictCollection(const void* dictBuffer, size_t d
void shuffleDictionaries(ddict_collection_t dicts)
{
size_t const nbDicts = dicts.nbDDict;
for (size_t r=0; r<nbDicts; r++) {
size_t const d = rand() % nbDicts;
ZSTD_DDict* tmpd = dicts.ddicts[d];
dicts.ddicts[d] = dicts.ddicts[r];
dicts.ddicts[r] = tmpd;
}
for (size_t r=0; r<nbDicts; r++) {
size_t const d1 = rand() % nbDicts;
size_t const d2 = rand() % nbDicts;
@ -537,14 +543,15 @@ int bad_usage(const char* exeName)
int main (int argc, const char** argv)
{
const char* const exeName = argv[0];
int cLevel = CLEVEL_DEFAULT;
size_t blockSize = BLOCKSIZE_DEFAULT;
size_t nbDicts = 0;
if (argc < 2) return bad_usage(exeName);
const char* const fileName = argv[1];
const char* dictionary = NULL;
int cLevel = CLEVEL_DEFAULT;
size_t blockSize = BLOCKSIZE_DEFAULT;
size_t nbDicts = 0; /* auto, 1 dict per block */
for (int argNb = 2; argNb < argc ; argNb++) {
const char* argument = argv[argNb];
if (longCommandWArg(&argument, "--clevel=")) { cLevel = readU32FromChar(&argument); continue; }