facebook/zstd
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add Fuzzer Test for the Various Dict Attachment Strategies

Browse Source
This commit is contained in:
W. Felix Handte 2020-08-11 15:29:12 -04:00
parent ae4ebf6b8c
commit 2cf6cfc55f
1 changed files with 54 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
tests/fuzzer.c
View File

@ -2922,6 +2922,60 @@ static int basicUnitTests(U32 const seed, double compressibility)
} }
DISPLAYLEVEL(3, "OK \n"); DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : testing cdict compression with different attachment strategies : ", testNb++);
{
ZSTD_CCtx* const cctx = ZSTD_createCCtx();
ZSTD_DCtx* const dctx = ZSTD_createDCtx();
size_t dictSize = CNBuffSize > 110 KB ? 110 KB : CNBuffSize;
void* dict = (void*)malloc(dictSize);
ZSTD_CCtx_params* cctx_params = ZSTD_createCCtxParams();
ZSTD_dictAttachPref_e const attachPrefs[] = {
ZSTD_dictDefaultAttach,
ZSTD_dictForceAttach,
ZSTD_dictForceCopy,
ZSTD_dictForceLoad,
ZSTD_dictForceAttach
};
int const enableDedicatedDictSearch[] = {0, 0, 0, 0, 1};
int const cLevel = 6;
int i;
RDG_genBuffer(dict, dictSize, 0.5, 0.5, seed);
RDG_genBuffer(CNBuffer, CNBuffSize, 0.6, 0.6, seed);
CHECK(cctx_params != NULL);
for (i = 0; i < 5; ++i) {
ZSTD_dictAttachPref_e const attachPref = attachPrefs[i];
int const enableDDS = enableDedicatedDictSearch[i];
ZSTD_CDict* cdict;
DISPLAYLEVEL(5, "\n iter %d ", i);
ZSTD_CCtxParams_init(cctx_params, cLevel);
CHECK_Z(ZSTD_CCtxParams_setParameter(cctx_params, ZSTD_c_enableDedicatedDictSearch, enableDDS));
cdict = ZSTD_createCDict_advanced2(dict, dictSize, ZSTD_dlm_byRef, ZSTD_dct_auto, cctx_params, ZSTD_defaultCMem);
CHECK(cdict != NULL);
CHECK_Z(ZSTD_CCtx_refCDict(cctx, cdict));
CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_forceAttachDict, attachPref));
cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize);
CHECK_Z(cSize);
CHECK_Z(ZSTD_decompress_usingDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, dict, CNBuffSize));
CHECK_Z(ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters));
ZSTD_freeCDict(cdict);
}
ZSTD_freeCCtx(cctx);
ZSTD_freeDCtx(dctx);
ZSTD_freeCCtxParams(cctx_params);
free(dict);
}
DISPLAYLEVEL(3, "OK \n");
_end: _end:
free(CNBuffer); free(CNBuffer);
free(compressedBuffer); free(compressedBuffer);