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added ZSTD_initStaticCCtx()

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makes it possible to statically or externally allocate CCtx.
static CCtx will only use provided memory area,
it will never resize nor malloc.
This commit is contained in:
Yann Collet
2017-05-23 13:16:00 -07:00
parent 5ac72b417c
commit c7fe262dc9
4 changed files with 144 additions and 14 deletions
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57
tests/fuzzer.c
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@ -190,6 +190,63 @@ static int basicUnitTests(U32 seed, double compressibility)
DISPLAYLEVEL(4, "OK \n");
/* Static CCtx tests */
#define STATIC_CCTX_LEVEL 3
DISPLAYLEVEL(4, "test%3i : create static CCtx for level %u :", testNb++, STATIC_CCTX_LEVEL);
{ ZSTD_compressionParameters const cParams = ZSTD_getCParams(STATIC_CCTX_LEVEL, 0, 0);
size_t const staticCCtxSize = ZSTD_estimateCStreamSize(cParams);
void* staticCCtxBuffer = malloc(staticCCtxSize);
if (staticCCtxBuffer==NULL) {
DISPLAY("Not enough memory, aborting\n");
testResult = 1;
goto _end;
}
{ ZSTD_CCtx* staticCCtx = ZSTD_initStaticCCtx(staticCCtxBuffer, staticCCtxSize);
if (staticCCtx==NULL) goto _output_error;
DISPLAYLEVEL(4, "OK \n");
DISPLAYLEVEL(4, "test%3i : init CCtx for level %u : ", testNb++, STATIC_CCTX_LEVEL);
{ size_t const r = ZSTD_compressBegin(staticCCtx, STATIC_CCTX_LEVEL);
if (ZSTD_isError(r)) goto _output_error; }
DISPLAYLEVEL(4, "OK \n");
DISPLAYLEVEL(4, "test%3i : simple compression test with static CCtx : ", testNb++);
CHECKPLUS(r, ZSTD_compressCCtx(staticCCtx,
compressedBuffer, ZSTD_compressBound(CNBuffSize),
CNBuffer, CNBuffSize, STATIC_CCTX_LEVEL),
cSize=r );
DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBuffSize*100);
DISPLAYLEVEL(4, "test%3i : decompress verification test : ", testNb++);
{ size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize);
if (r != CNBuffSize) goto _output_error; }
DISPLAYLEVEL(4, "OK \n");
DISPLAYLEVEL(4, "test%3i : init CCtx for too large level (must fail) : ", testNb++);
{ size_t const r = ZSTD_compressBegin(staticCCtx, ZSTD_maxCLevel());
if (!ZSTD_isError(r)) goto _output_error; }
DISPLAYLEVEL(4, "OK \n");
DISPLAYLEVEL(4, "test%3i : init CCtx for small level %u (should work again) : ", testNb++, 1);
{ size_t const r = ZSTD_compressBegin(staticCCtx, 1);
if (ZSTD_isError(r)) goto _output_error; }
DISPLAYLEVEL(4, "OK \n");
DISPLAYLEVEL(4, "test%3i : init CStream for small level %u : ", testNb++, 1);
{ size_t const r = ZSTD_initCStream(staticCCtx, 1);
if (ZSTD_isError(r)) goto _output_error; }
DISPLAYLEVEL(4, "OK \n");
DISPLAYLEVEL(4, "test%3i : init CStream with dictionary (should fail) : ", testNb++);
{ size_t const r = ZSTD_initCStream_usingDict(staticCCtx, CNBuffer, 64 KB, 1);
if (!ZSTD_isError(r)) goto _output_error; }
DISPLAYLEVEL(4, "OK \n");
}
free(staticCCtxBuffer);
}
/* ZSTDMT simple MT compression test */
DISPLAYLEVEL(4, "test%3i : create ZSTDMT CCtx : ", testNb++);
{ ZSTDMT_CCtx* mtctx = ZSTDMT_createCCtx(2);