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[ceph.git] / ceph / src / zstd / tests / fuzzer.c
1 /*
2 * Copyright (c) 2015-present, Yann Collet, Facebook, Inc.
3 * All rights reserved.
4 *
5 * This source code is licensed under both the BSD-style license (found in the
6 * LICENSE file in the root directory of this source tree) and the GPLv2 (found
7 * in the COPYING file in the root directory of this source tree).
8 * You may select, at your option, one of the above-listed licenses.
9 */
10
11
12 /*-************************************
13 * Compiler specific
14 **************************************/
15 #ifdef _MSC_VER /* Visual Studio */
16 # define _CRT_SECURE_NO_WARNINGS /* fgets */
17 # pragma warning(disable : 4127) /* disable: C4127: conditional expression is constant */
18 # pragma warning(disable : 4204) /* disable: C4204: non-constant aggregate initializer */
19 #endif
20
21
22 /*-************************************
23 * Includes
24 **************************************/
25 #include <stdlib.h> /* free */
26 #include <stdio.h> /* fgets, sscanf */
27 #include <string.h> /* strcmp */
28 #include <assert.h>
29 #define ZSTD_STATIC_LINKING_ONLY /* ZSTD_compressContinue, ZSTD_compressBlock */
30 #include "fse.h"
31 #include "zstd.h" /* ZSTD_VERSION_STRING */
32 #include "zstd_errors.h" /* ZSTD_getErrorCode */
33 #include "zstdmt_compress.h"
34 #define ZDICT_STATIC_LINKING_ONLY
35 #include "zdict.h" /* ZDICT_trainFromBuffer */
36 #include "datagen.h" /* RDG_genBuffer */
37 #include "mem.h"
38 #define XXH_STATIC_LINKING_ONLY /* XXH64_state_t */
39 #include "xxhash.h" /* XXH64 */
40 #include "util.h"
41 #include "timefn.h" /* SEC_TO_MICRO, UTIL_time_t, UTIL_TIME_INITIALIZER, UTIL_clockSpanMicro, UTIL_getTime */
42
43
44 /*-************************************
45 * Constants
46 **************************************/
47 #define KB *(1U<<10)
48 #define MB *(1U<<20)
49 #define GB *(1U<<30)
50
51 static const int FUZ_compressibility_default = 50;
52 static const int nbTestsDefault = 30000;
53
54
55 /*-************************************
56 * Display Macros
57 **************************************/
58 #define DISPLAY(...) fprintf(stderr, __VA_ARGS__)
59 #define DISPLAYLEVEL(l, ...) if (g_displayLevel>=l) { DISPLAY(__VA_ARGS__); }
60 static U32 g_displayLevel = 2;
61
62 static const U64 g_refreshRate = SEC_TO_MICRO / 6;
63 static UTIL_time_t g_displayClock = UTIL_TIME_INITIALIZER;
64
65 #define DISPLAYUPDATE(l, ...) if (g_displayLevel>=l) { \
66 if ((UTIL_clockSpanMicro(g_displayClock) > g_refreshRate) || (g_displayLevel>=4)) \
67 { g_displayClock = UTIL_getTime(); DISPLAY(__VA_ARGS__); \
68 if (g_displayLevel>=4) fflush(stderr); } }
69
70
71 /*-*******************************************************
72 * Compile time test
73 *********************************************************/
74 #undef MIN
75 #undef MAX
76 /* Declaring the function is it isn't unused */
77 void FUZ_bug976(void);
78 void FUZ_bug976(void)
79 { /* these constants shall not depend on MIN() macro */
80 assert(ZSTD_HASHLOG_MAX < 31);
81 assert(ZSTD_CHAINLOG_MAX < 31);
82 }
83
84
85 /*-*******************************************************
86 * Internal functions
87 *********************************************************/
88 #define MIN(a,b) ((a)<(b)?(a):(b))
89 #define MAX(a,b) ((a)>(b)?(a):(b))
90
91 #define FUZ_rotl32(x,r) ((x << r) | (x >> (32 - r)))
92 static U32 FUZ_rand(U32* src)
93 {
94 static const U32 prime1 = 2654435761U;
95 static const U32 prime2 = 2246822519U;
96 U32 rand32 = *src;
97 rand32 *= prime1;
98 rand32 += prime2;
99 rand32 = FUZ_rotl32(rand32, 13);
100 *src = rand32;
101 return rand32 >> 5;
102 }
103
104 static U32 FUZ_highbit32(U32 v32)
105 {
106 unsigned nbBits = 0;
107 if (v32==0) return 0;
108 while (v32) v32 >>= 1, nbBits++;
109 return nbBits;
110 }
111
112
113 /*=============================================
114 * Test macros
115 =============================================*/
116 #define CHECK_Z(f) { \
117 size_t const err = f; \
118 if (ZSTD_isError(err)) { \
119 DISPLAY("Error => %s : %s ", \
120 #f, ZSTD_getErrorName(err)); \
121 exit(1); \
122 } }
123
124 #define CHECK_V(var, fn) size_t const var = fn; if (ZSTD_isError(var)) goto _output_error
125 #define CHECK(fn) { CHECK_V(err, fn); }
126 #define CHECKPLUS(var, fn, more) { CHECK_V(var, fn); more; }
127
128 #define CHECK_OP(op, lhs, rhs) { \
129 if (!((lhs) op (rhs))) { \
130 DISPLAY("Error L%u => FAILED %s %s %s ", __LINE__, #lhs, #op, #rhs); \
131 goto _output_error; \
132 } \
133 }
134 #define CHECK_EQ(lhs, rhs) CHECK_OP(==, lhs, rhs)
135 #define CHECK_LT(lhs, rhs) CHECK_OP(<, lhs, rhs)
136
137
138 /*=============================================
139 * Memory Tests
140 =============================================*/
141 #if defined(__APPLE__) && defined(__MACH__)
142
143 #include <malloc/malloc.h> /* malloc_size */
144
145 typedef struct {
146 unsigned long long totalMalloc;
147 size_t currentMalloc;
148 size_t peakMalloc;
149 unsigned nbMalloc;
150 unsigned nbFree;
151 } mallocCounter_t;
152
153 static const mallocCounter_t INIT_MALLOC_COUNTER = { 0, 0, 0, 0, 0 };
154
155 static void* FUZ_mallocDebug(void* counter, size_t size)
156 {
157 mallocCounter_t* const mcPtr = (mallocCounter_t*)counter;
158 void* const ptr = malloc(size);
159 if (ptr==NULL) return NULL;
160 DISPLAYLEVEL(4, "allocating %u KB => effectively %u KB \n",
161 (unsigned)(size >> 10), (unsigned)(malloc_size(ptr) >> 10)); /* OS-X specific */
162 mcPtr->totalMalloc += size;
163 mcPtr->currentMalloc += size;
164 if (mcPtr->currentMalloc > mcPtr->peakMalloc)
165 mcPtr->peakMalloc = mcPtr->currentMalloc;
166 mcPtr->nbMalloc += 1;
167 return ptr;
168 }
169
170 static void FUZ_freeDebug(void* counter, void* address)
171 {
172 mallocCounter_t* const mcPtr = (mallocCounter_t*)counter;
173 DISPLAYLEVEL(4, "freeing %u KB \n", (unsigned)(malloc_size(address) >> 10));
174 mcPtr->nbFree += 1;
175 mcPtr->currentMalloc -= malloc_size(address); /* OS-X specific */
176 free(address);
177 }
178
179 static void FUZ_displayMallocStats(mallocCounter_t count)
180 {
181 DISPLAYLEVEL(3, "peak:%6u KB, nbMallocs:%2u, total:%6u KB \n",
182 (unsigned)(count.peakMalloc >> 10),
183 count.nbMalloc,
184 (unsigned)(count.totalMalloc >> 10));
185 }
186
187 static int FUZ_mallocTests_internal(unsigned seed, double compressibility, unsigned part,
188 void* inBuffer, size_t inSize, void* outBuffer, size_t outSize)
189 {
190 /* test only played in verbose mode, as they are long */
191 if (g_displayLevel<3) return 0;
192
193 /* Create compressible noise */
194 if (!inBuffer || !outBuffer) {
195 DISPLAY("Not enough memory, aborting\n");
196 exit(1);
197 }
198 RDG_genBuffer(inBuffer, inSize, compressibility, 0. /*auto*/, seed);
199
200 /* simple compression tests */
201 if (part <= 1)
202 { int compressionLevel;
203 for (compressionLevel=1; compressionLevel<=6; compressionLevel++) {
204 mallocCounter_t malcount = INIT_MALLOC_COUNTER;
205 ZSTD_customMem const cMem = { FUZ_mallocDebug, FUZ_freeDebug, &malcount };
206 ZSTD_CCtx* const cctx = ZSTD_createCCtx_advanced(cMem);
207 CHECK_Z( ZSTD_compressCCtx(cctx, outBuffer, outSize, inBuffer, inSize, compressionLevel) );
208 ZSTD_freeCCtx(cctx);
209 DISPLAYLEVEL(3, "compressCCtx level %i : ", compressionLevel);
210 FUZ_displayMallocStats(malcount);
211 } }
212
213 /* streaming compression tests */
214 if (part <= 2)
215 { int compressionLevel;
216 for (compressionLevel=1; compressionLevel<=6; compressionLevel++) {
217 mallocCounter_t malcount = INIT_MALLOC_COUNTER;
218 ZSTD_customMem const cMem = { FUZ_mallocDebug, FUZ_freeDebug, &malcount };
219 ZSTD_CCtx* const cstream = ZSTD_createCStream_advanced(cMem);
220 ZSTD_outBuffer out = { outBuffer, outSize, 0 };
221 ZSTD_inBuffer in = { inBuffer, inSize, 0 };
222 CHECK_Z( ZSTD_initCStream(cstream, compressionLevel) );
223 CHECK_Z( ZSTD_compressStream(cstream, &out, &in) );
224 CHECK_Z( ZSTD_endStream(cstream, &out) );
225 ZSTD_freeCStream(cstream);
226 DISPLAYLEVEL(3, "compressStream level %i : ", compressionLevel);
227 FUZ_displayMallocStats(malcount);
228 } }
229
230 /* advanced MT API test */
231 if (part <= 3)
232 { unsigned nbThreads;
233 for (nbThreads=1; nbThreads<=4; nbThreads++) {
234 int compressionLevel;
235 for (compressionLevel=1; compressionLevel<=6; compressionLevel++) {
236 mallocCounter_t malcount = INIT_MALLOC_COUNTER;
237 ZSTD_customMem const cMem = { FUZ_mallocDebug, FUZ_freeDebug, &malcount };
238 ZSTD_CCtx* const cctx = ZSTD_createCCtx_advanced(cMem);
239 CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, compressionLevel) );
240 CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, nbThreads) );
241 CHECK_Z( ZSTD_compress2(cctx, outBuffer, outSize, inBuffer, inSize) );
242 ZSTD_freeCCtx(cctx);
243 DISPLAYLEVEL(3, "compress_generic,-T%u,end level %i : ",
244 nbThreads, compressionLevel);
245 FUZ_displayMallocStats(malcount);
246 } } }
247
248 /* advanced MT streaming API test */
249 if (part <= 4)
250 { unsigned nbThreads;
251 for (nbThreads=1; nbThreads<=4; nbThreads++) {
252 int compressionLevel;
253 for (compressionLevel=1; compressionLevel<=6; compressionLevel++) {
254 mallocCounter_t malcount = INIT_MALLOC_COUNTER;
255 ZSTD_customMem const cMem = { FUZ_mallocDebug, FUZ_freeDebug, &malcount };
256 ZSTD_CCtx* const cctx = ZSTD_createCCtx_advanced(cMem);
257 ZSTD_outBuffer out = { outBuffer, outSize, 0 };
258 ZSTD_inBuffer in = { inBuffer, inSize, 0 };
259 CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, compressionLevel) );
260 CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, nbThreads) );
261 CHECK_Z( ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_continue) );
262 while ( ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end) ) {}
263 ZSTD_freeCCtx(cctx);
264 DISPLAYLEVEL(3, "compress_generic,-T%u,continue level %i : ",
265 nbThreads, compressionLevel);
266 FUZ_displayMallocStats(malcount);
267 } } }
268
269 return 0;
270 }
271
272 static int FUZ_mallocTests(unsigned seed, double compressibility, unsigned part)
273 {
274 size_t const inSize = 64 MB + 16 MB + 4 MB + 1 MB + 256 KB + 64 KB; /* 85.3 MB */
275 size_t const outSize = ZSTD_compressBound(inSize);
276 void* const inBuffer = malloc(inSize);
277 void* const outBuffer = malloc(outSize);
278 int result;
279
280 /* Create compressible noise */
281 if (!inBuffer || !outBuffer) {
282 DISPLAY("Not enough memory, aborting \n");
283 exit(1);
284 }
285
286 result = FUZ_mallocTests_internal(seed, compressibility, part,
287 inBuffer, inSize, outBuffer, outSize);
288
289 free(inBuffer);
290 free(outBuffer);
291 return result;
292 }
293
294 #else
295
296 static int FUZ_mallocTests(unsigned seed, double compressibility, unsigned part)
297 {
298 (void)seed; (void)compressibility; (void)part;
299 return 0;
300 }
301
302 #endif
303
304 /*=============================================
305 * Unit tests
306 =============================================*/
307
308 static int basicUnitTests(U32 seed, double compressibility)
309 {
310 size_t const CNBuffSize = 5 MB;
311 void* const CNBuffer = malloc(CNBuffSize);
312 size_t const compressedBufferSize = ZSTD_compressBound(CNBuffSize);
313 void* const compressedBuffer = malloc(compressedBufferSize);
314 void* const decodedBuffer = malloc(CNBuffSize);
315 int testResult = 0;
316 unsigned testNb=0;
317 size_t cSize;
318
319 /* Create compressible noise */
320 if (!CNBuffer || !compressedBuffer || !decodedBuffer) {
321 DISPLAY("Not enough memory, aborting\n");
322 testResult = 1;
323 goto _end;
324 }
325 RDG_genBuffer(CNBuffer, CNBuffSize, compressibility, 0., seed);
326
327 /* Basic tests */
328 DISPLAYLEVEL(3, "test%3u : ZSTD_getErrorName : ", testNb++);
329 { const char* errorString = ZSTD_getErrorName(0);
330 DISPLAYLEVEL(3, "OK : %s \n", errorString);
331 }
332
333 DISPLAYLEVEL(3, "test%3u : ZSTD_getErrorName with wrong value : ", testNb++);
334 { const char* errorString = ZSTD_getErrorName(499);
335 DISPLAYLEVEL(3, "OK : %s \n", errorString);
336 }
337
338 DISPLAYLEVEL(3, "test%3u : min compression level : ", testNb++);
339 { int const mcl = ZSTD_minCLevel();
340 DISPLAYLEVEL(3, "%i (OK) \n", mcl);
341 }
342
343 DISPLAYLEVEL(3, "test%3u : compress %u bytes : ", testNb++, (unsigned)CNBuffSize);
344 { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
345 if (cctx==NULL) goto _output_error;
346 CHECKPLUS(r, ZSTD_compressCCtx(cctx,
347 compressedBuffer, compressedBufferSize,
348 CNBuffer, CNBuffSize, 1),
349 cSize=r );
350 DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100);
351
352 DISPLAYLEVEL(3, "test%3i : size of cctx for level 1 : ", testNb++);
353 { size_t const cctxSize = ZSTD_sizeof_CCtx(cctx);
354 DISPLAYLEVEL(3, "%u bytes \n", (unsigned)cctxSize);
355 }
356 ZSTD_freeCCtx(cctx);
357 }
358
359 DISPLAYLEVEL(3, "test%3i : decompress skippable frame -8 size : ", testNb++);
360 {
361 char const skippable8[] = "\x50\x2a\x4d\x18\xf8\xff\xff\xff";
362 size_t const size = ZSTD_decompress(NULL, 0, skippable8, 8);
363 if (!ZSTD_isError(size)) goto _output_error;
364 }
365 DISPLAYLEVEL(3, "OK \n");
366
367
368 DISPLAYLEVEL(3, "test%3i : ZSTD_getFrameContentSize test : ", testNb++);
369 { unsigned long long const rSize = ZSTD_getFrameContentSize(compressedBuffer, cSize);
370 if (rSize != CNBuffSize) goto _output_error;
371 }
372 DISPLAYLEVEL(3, "OK \n");
373
374 DISPLAYLEVEL(3, "test%3i : ZSTD_findDecompressedSize test : ", testNb++);
375 { unsigned long long const rSize = ZSTD_findDecompressedSize(compressedBuffer, cSize);
376 if (rSize != CNBuffSize) goto _output_error;
377 }
378 DISPLAYLEVEL(3, "OK \n");
379
380 DISPLAYLEVEL(3, "test%3i : tight ZSTD_decompressBound test : ", testNb++);
381 {
382 unsigned long long bound = ZSTD_decompressBound(compressedBuffer, cSize);
383 if (bound != CNBuffSize) goto _output_error;
384 }
385 DISPLAYLEVEL(3, "OK \n");
386
387 DISPLAYLEVEL(3, "test%3i : ZSTD_decompressBound test with invalid srcSize : ", testNb++);
388 {
389 unsigned long long bound = ZSTD_decompressBound(compressedBuffer, cSize - 1);
390 if (bound != ZSTD_CONTENTSIZE_ERROR) goto _output_error;
391 }
392 DISPLAYLEVEL(3, "OK \n");
393
394 DISPLAYLEVEL(3, "test%3i : decompress %u bytes : ", testNb++, (unsigned)CNBuffSize);
395 { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize);
396 if (r != CNBuffSize) goto _output_error; }
397 DISPLAYLEVEL(3, "OK \n");
398
399 DISPLAYLEVEL(3, "test%3i : check decompressed result : ", testNb++);
400 { size_t u;
401 for (u=0; u<CNBuffSize; u++) {
402 if (((BYTE*)decodedBuffer)[u] != ((BYTE*)CNBuffer)[u]) goto _output_error;;
403 } }
404 DISPLAYLEVEL(3, "OK \n");
405
406
407 DISPLAYLEVEL(3, "test%3i : decompress with null dict : ", testNb++);
408 { ZSTD_DCtx* const dctx = ZSTD_createDCtx(); assert(dctx != NULL);
409 { size_t const r = ZSTD_decompress_usingDict(dctx,
410 decodedBuffer, CNBuffSize,
411 compressedBuffer, cSize,
412 NULL, 0);
413 if (r != CNBuffSize) goto _output_error;
414 }
415 ZSTD_freeDCtx(dctx);
416 }
417 DISPLAYLEVEL(3, "OK \n");
418
419 DISPLAYLEVEL(3, "test%3i : decompress with null DDict : ", testNb++);
420 { ZSTD_DCtx* const dctx = ZSTD_createDCtx(); assert(dctx != NULL);
421 { size_t const r = ZSTD_decompress_usingDDict(dctx,
422 decodedBuffer, CNBuffSize,
423 compressedBuffer, cSize,
424 NULL);
425 if (r != CNBuffSize) goto _output_error;
426 }
427 ZSTD_freeDCtx(dctx);
428 }
429 DISPLAYLEVEL(3, "OK \n");
430
431 DISPLAYLEVEL(3, "test%3i : decompress with 1 missing byte : ", testNb++);
432 { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize-1);
433 if (!ZSTD_isError(r)) goto _output_error;
434 if (ZSTD_getErrorCode((size_t)r) != ZSTD_error_srcSize_wrong) goto _output_error; }
435 DISPLAYLEVEL(3, "OK \n");
436
437 DISPLAYLEVEL(3, "test%3i : decompress with 1 too much byte : ", testNb++);
438 { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize+1);
439 if (!ZSTD_isError(r)) goto _output_error;
440 if (ZSTD_getErrorCode(r) != ZSTD_error_srcSize_wrong) goto _output_error; }
441 DISPLAYLEVEL(3, "OK \n");
442
443 DISPLAYLEVEL(3, "test%3i : decompress too large input : ", testNb++);
444 { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, compressedBufferSize);
445 if (!ZSTD_isError(r)) goto _output_error;
446 if (ZSTD_getErrorCode(r) != ZSTD_error_srcSize_wrong) goto _output_error; }
447 DISPLAYLEVEL(3, "OK \n");
448
449 DISPLAYLEVEL(3, "test%3i : ZSTD_decompressBound test with content size missing : ", testNb++);
450 { /* create compressed buffer with content size missing */
451 ZSTD_CCtx* cctx = ZSTD_createCCtx();
452 CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_contentSizeFlag, 0) );
453 CHECKPLUS(r, ZSTD_compress2(cctx,
454 compressedBuffer, compressedBufferSize,
455 CNBuffer, CNBuffSize),
456 cSize=r );
457 ZSTD_freeCCtx(cctx);
458 }
459 { /* ensure frame content size is missing */
460 ZSTD_frameHeader zfh;
461 size_t const ret = ZSTD_getFrameHeader(&zfh, compressedBuffer, compressedBufferSize);
462 if (ret != 0 || zfh.frameContentSize != ZSTD_CONTENTSIZE_UNKNOWN) goto _output_error;
463 }
464 { /* ensure CNBuffSize <= decompressBound */
465 unsigned long long const bound = ZSTD_decompressBound(compressedBuffer, compressedBufferSize);
466 if (CNBuffSize > bound) goto _output_error;
467 }
468 DISPLAYLEVEL(3, "OK \n");
469
470 DISPLAYLEVEL(3, "test%3d : check CCtx size after compressing empty input : ", testNb++);
471 { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
472 size_t const r = ZSTD_compressCCtx(cctx, compressedBuffer, compressedBufferSize, NULL, 0, 19);
473 if (ZSTD_isError(r)) goto _output_error;
474 if (ZSTD_sizeof_CCtx(cctx) > (1U << 20)) goto _output_error;
475 ZSTD_freeCCtx(cctx);
476 cSize = r;
477 }
478 DISPLAYLEVEL(3, "OK \n");
479
480 DISPLAYLEVEL(3, "test%3d : decompress empty frame into NULL : ", testNb++);
481 { size_t const r = ZSTD_decompress(NULL, 0, compressedBuffer, cSize);
482 if (ZSTD_isError(r)) goto _output_error;
483 if (r != 0) goto _output_error;
484 }
485 { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
486 ZSTD_outBuffer output;
487 if (cctx==NULL) goto _output_error;
488 output.dst = compressedBuffer;
489 output.size = compressedBufferSize;
490 output.pos = 0;
491 CHECK_Z( ZSTD_initCStream(cctx, 1) ); /* content size unknown */
492 CHECK_Z( ZSTD_flushStream(cctx, &output) ); /* ensure no possibility to "concatenate" and determine the content size */
493 CHECK_Z( ZSTD_endStream(cctx, &output) );
494 ZSTD_freeCCtx(cctx);
495 /* single scan decompression */
496 { size_t const r = ZSTD_decompress(NULL, 0, compressedBuffer, output.pos);
497 if (ZSTD_isError(r)) goto _output_error;
498 if (r != 0) goto _output_error;
499 }
500 /* streaming decompression */
501 { ZSTD_DCtx* const dstream = ZSTD_createDStream();
502 ZSTD_inBuffer dinput;
503 ZSTD_outBuffer doutput;
504 size_t ipos;
505 if (dstream==NULL) goto _output_error;
506 dinput.src = compressedBuffer;
507 dinput.size = 0;
508 dinput.pos = 0;
509 doutput.dst = NULL;
510 doutput.size = 0;
511 doutput.pos = 0;
512 CHECK_Z ( ZSTD_initDStream(dstream) );
513 for (ipos=1; ipos<=output.pos; ipos++) {
514 dinput.size = ipos;
515 CHECK_Z ( ZSTD_decompressStream(dstream, &doutput, &dinput) );
516 }
517 if (doutput.pos != 0) goto _output_error;
518 ZSTD_freeDStream(dstream);
519 }
520 }
521 DISPLAYLEVEL(3, "OK \n");
522
523 DISPLAYLEVEL(3, "test%3d : re-use CCtx with expanding block size : ", testNb++);
524 { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
525 ZSTD_parameters const params = ZSTD_getParams(1, ZSTD_CONTENTSIZE_UNKNOWN, 0);
526 assert(params.fParams.contentSizeFlag == 1); /* block size will be adapted if pledgedSrcSize is enabled */
527 CHECK_Z( ZSTD_compressBegin_advanced(cctx, NULL, 0, params, 1 /*pledgedSrcSize*/) );
528 CHECK_Z( ZSTD_compressEnd(cctx, compressedBuffer, compressedBufferSize, CNBuffer, 1) ); /* creates a block size of 1 */
529
530 CHECK_Z( ZSTD_compressBegin_advanced(cctx, NULL, 0, params, ZSTD_CONTENTSIZE_UNKNOWN) ); /* re-use same parameters */
531 { size_t const inSize = 2* 128 KB;
532 size_t const outSize = ZSTD_compressBound(inSize);
533 CHECK_Z( ZSTD_compressEnd(cctx, compressedBuffer, outSize, CNBuffer, inSize) );
534 /* will fail if blockSize is not resized */
535 }
536 ZSTD_freeCCtx(cctx);
537 }
538 DISPLAYLEVEL(3, "OK \n");
539
540 DISPLAYLEVEL(3, "test%3d : re-using a CCtx should compress the same : ", testNb++);
541 { size_t const sampleSize = 30;
542 int i;
543 for (i=0; i<20; i++)
544 ((char*)CNBuffer)[i] = (char)i; /* ensure no match during initial section */
545 memcpy((char*)CNBuffer + 20, CNBuffer, 10); /* create one match, starting from beginning of sample, which is the difficult case (see #1241) */
546 for (i=1; i<=19; i++) {
547 ZSTD_CCtx* const cctx = ZSTD_createCCtx();
548 size_t size1, size2;
549 DISPLAYLEVEL(5, "l%i ", i);
550 size1 = ZSTD_compressCCtx(cctx, compressedBuffer, compressedBufferSize, CNBuffer, sampleSize, i);
551 CHECK_Z(size1);
552
553 size2 = ZSTD_compressCCtx(cctx, compressedBuffer, compressedBufferSize, CNBuffer, sampleSize, i);
554 CHECK_Z(size2);
555 CHECK_EQ(size1, size2);
556
557 CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, i) );
558 size2 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, sampleSize);
559 CHECK_Z(size2);
560 CHECK_EQ(size1, size2);
561
562 size2 = ZSTD_compress2(cctx, compressedBuffer, ZSTD_compressBound(sampleSize) - 1, CNBuffer, sampleSize); /* force streaming, as output buffer is not large enough to guarantee success */
563 CHECK_Z(size2);
564 CHECK_EQ(size1, size2);
565
566 { ZSTD_inBuffer inb;
567 ZSTD_outBuffer outb;
568 inb.src = CNBuffer;
569 inb.pos = 0;
570 inb.size = sampleSize;
571 outb.dst = compressedBuffer;
572 outb.pos = 0;
573 outb.size = ZSTD_compressBound(sampleSize) - 1; /* force streaming, as output buffer is not large enough to guarantee success */
574 CHECK_Z( ZSTD_compressStream2(cctx, &outb, &inb, ZSTD_e_end) );
575 assert(inb.pos == inb.size);
576 CHECK_EQ(size1, outb.pos);
577 }
578
579 ZSTD_freeCCtx(cctx);
580 }
581 }
582 DISPLAYLEVEL(3, "OK \n");
583
584 DISPLAYLEVEL(3, "test%3d : btultra2 & 1st block : ", testNb++);
585 { size_t const sampleSize = 1024;
586 ZSTD_CCtx* const cctx = ZSTD_createCCtx();
587 ZSTD_inBuffer inb;
588 ZSTD_outBuffer outb;
589 inb.src = CNBuffer;
590 inb.pos = 0;
591 inb.size = 0;
592 outb.dst = compressedBuffer;
593 outb.pos = 0;
594 outb.size = compressedBufferSize;
595 CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, ZSTD_maxCLevel()) );
596
597 inb.size = sampleSize; /* start with something, so that context is already used */
598 CHECK_Z( ZSTD_compressStream2(cctx, &outb, &inb, ZSTD_e_end) ); /* will break internal assert if stats_init is not disabled */
599 assert(inb.pos == inb.size);
600 outb.pos = 0; /* cancel output */
601
602 CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(cctx, sampleSize) );
603 inb.size = 4; /* too small size : compression will be skipped */
604 inb.pos = 0;
605 CHECK_Z( ZSTD_compressStream2(cctx, &outb, &inb, ZSTD_e_flush) );
606 assert(inb.pos == inb.size);
607
608 inb.size += 5; /* too small size : compression will be skipped */
609 CHECK_Z( ZSTD_compressStream2(cctx, &outb, &inb, ZSTD_e_flush) );
610 assert(inb.pos == inb.size);
611
612 inb.size += 11; /* small enough to attempt compression */
613 CHECK_Z( ZSTD_compressStream2(cctx, &outb, &inb, ZSTD_e_flush) );
614 assert(inb.pos == inb.size);
615
616 assert(inb.pos < sampleSize);
617 inb.size = sampleSize; /* large enough to trigger stats_init, but no longer at beginning */
618 CHECK_Z( ZSTD_compressStream2(cctx, &outb, &inb, ZSTD_e_end) ); /* will break internal assert if stats_init is not disabled */
619 assert(inb.pos == inb.size);
620 ZSTD_freeCCtx(cctx);
621 }
622 DISPLAYLEVEL(3, "OK \n");
623
624 DISPLAYLEVEL(3, "test%3d : ZSTD_CCtx_getParameter() : ", testNb++);
625 { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
626 ZSTD_outBuffer out = {NULL, 0, 0};
627 ZSTD_inBuffer in = {NULL, 0, 0};
628 int value;
629
630 CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_compressionLevel, &value));
631 CHECK_EQ(value, 3);
632 CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_hashLog, &value));
633 CHECK_EQ(value, 0);
634 CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_hashLog, ZSTD_HASHLOG_MIN));
635 CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_compressionLevel, &value));
636 CHECK_EQ(value, 3);
637 CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_hashLog, &value));
638 CHECK_EQ(value, ZSTD_HASHLOG_MIN);
639 CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 7));
640 CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_compressionLevel, &value));
641 CHECK_EQ(value, 7);
642 CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_hashLog, &value));
643 CHECK_EQ(value, ZSTD_HASHLOG_MIN);
644 /* Start a compression job */
645 ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_continue);
646 CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_compressionLevel, &value));
647 CHECK_EQ(value, 7);
648 CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_hashLog, &value));
649 CHECK_EQ(value, ZSTD_HASHLOG_MIN);
650 /* Reset the CCtx */
651 ZSTD_CCtx_reset(cctx, ZSTD_reset_session_only);
652 CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_compressionLevel, &value));
653 CHECK_EQ(value, 7);
654 CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_hashLog, &value));
655 CHECK_EQ(value, ZSTD_HASHLOG_MIN);
656 /* Reset the parameters */
657 ZSTD_CCtx_reset(cctx, ZSTD_reset_parameters);
658 CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_compressionLevel, &value));
659 CHECK_EQ(value, 3);
660 CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_hashLog, &value));
661 CHECK_EQ(value, 0);
662
663 ZSTD_freeCCtx(cctx);
664 }
665 DISPLAYLEVEL(3, "OK \n");
666
667 /* this test is really too long, and should be made faster */
668 DISPLAYLEVEL(3, "test%3d : overflow protection with large windowLog : ", testNb++);
669 { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
670 ZSTD_parameters params = ZSTD_getParams(-999, ZSTD_CONTENTSIZE_UNKNOWN, 0);
671 size_t const nbCompressions = ((1U << 31) / CNBuffSize) + 2; /* ensure U32 overflow protection is triggered */
672 size_t cnb;
673 assert(cctx != NULL);
674 params.fParams.contentSizeFlag = 0;
675 params.cParams.windowLog = ZSTD_WINDOWLOG_MAX;
676 for (cnb = 0; cnb < nbCompressions; ++cnb) {
677 DISPLAYLEVEL(6, "run %zu / %zu \n", cnb, nbCompressions);
678 CHECK_Z( ZSTD_compressBegin_advanced(cctx, NULL, 0, params, ZSTD_CONTENTSIZE_UNKNOWN) ); /* re-use same parameters */
679 CHECK_Z( ZSTD_compressEnd(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize) );
680 }
681 ZSTD_freeCCtx(cctx);
682 }
683 DISPLAYLEVEL(3, "OK \n");
684
685 DISPLAYLEVEL(3, "test%3d : size down context : ", testNb++);
686 { ZSTD_CCtx* const largeCCtx = ZSTD_createCCtx();
687 assert(largeCCtx != NULL);
688 CHECK_Z( ZSTD_compressBegin(largeCCtx, 19) ); /* streaming implies ZSTD_CONTENTSIZE_UNKNOWN, which maximizes memory usage */
689 CHECK_Z( ZSTD_compressEnd(largeCCtx, compressedBuffer, compressedBufferSize, CNBuffer, 1) );
690 { size_t const largeCCtxSize = ZSTD_sizeof_CCtx(largeCCtx); /* size of context must be measured after compression */
691 { ZSTD_CCtx* const smallCCtx = ZSTD_createCCtx();
692 assert(smallCCtx != NULL);
693 CHECK_Z(ZSTD_compressCCtx(smallCCtx, compressedBuffer, compressedBufferSize, CNBuffer, 1, 1));
694 { size_t const smallCCtxSize = ZSTD_sizeof_CCtx(smallCCtx);
695 DISPLAYLEVEL(5, "(large) %zuKB > 32*%zuKB (small) : ",
696 largeCCtxSize>>10, smallCCtxSize>>10);
697 assert(largeCCtxSize > 32* smallCCtxSize); /* note : "too large" definition is handled within zstd_compress.c .
698 * make this test case extreme, so that it doesn't depend on a possibly fluctuating definition */
699 }
700 ZSTD_freeCCtx(smallCCtx);
701 }
702 { U32 const maxNbAttempts = 1100; /* nb of usages before triggering size down is handled within zstd_compress.c.
703 * currently defined as 128x, but could be adjusted in the future.
704 * make this test long enough so that it's not too much tied to the current definition within zstd_compress.c */
705 unsigned u;
706 for (u=0; u<maxNbAttempts; u++) {
707 CHECK_Z(ZSTD_compressCCtx(largeCCtx, compressedBuffer, compressedBufferSize, CNBuffer, 1, 1));
708 if (ZSTD_sizeof_CCtx(largeCCtx) < largeCCtxSize) break; /* sized down */
709 }
710 DISPLAYLEVEL(5, "size down after %u attempts : ", u);
711 if (u==maxNbAttempts) goto _output_error; /* no sizedown happened */
712 }
713 }
714 ZSTD_freeCCtx(largeCCtx);
715 }
716 DISPLAYLEVEL(3, "OK \n");
717
718 /* Static CCtx tests */
719 #define STATIC_CCTX_LEVEL 3
720 DISPLAYLEVEL(3, "test%3i : create static CCtx for level %u :", testNb++, STATIC_CCTX_LEVEL);
721 { size_t const staticCCtxSize = ZSTD_estimateCStreamSize(STATIC_CCTX_LEVEL);
722 void* const staticCCtxBuffer = malloc(staticCCtxSize);
723 size_t const staticDCtxSize = ZSTD_estimateDCtxSize();
724 void* const staticDCtxBuffer = malloc(staticDCtxSize);
725 if (staticCCtxBuffer==NULL || staticDCtxBuffer==NULL) {
726 free(staticCCtxBuffer);
727 free(staticDCtxBuffer);
728 DISPLAY("Not enough memory, aborting\n");
729 testResult = 1;
730 goto _end;
731 }
732 { ZSTD_CCtx* staticCCtx = ZSTD_initStaticCCtx(staticCCtxBuffer, staticCCtxSize);
733 ZSTD_DCtx* staticDCtx = ZSTD_initStaticDCtx(staticDCtxBuffer, staticDCtxSize);
734 if ((staticCCtx==NULL) || (staticDCtx==NULL)) goto _output_error;
735 DISPLAYLEVEL(3, "OK \n");
736
737 DISPLAYLEVEL(3, "test%3i : init CCtx for level %u : ", testNb++, STATIC_CCTX_LEVEL);
738 { size_t const r = ZSTD_compressBegin(staticCCtx, STATIC_CCTX_LEVEL);
739 if (ZSTD_isError(r)) goto _output_error; }
740 DISPLAYLEVEL(3, "OK \n");
741
742 DISPLAYLEVEL(3, "test%3i : simple compression test with static CCtx : ", testNb++);
743 CHECKPLUS(r, ZSTD_compressCCtx(staticCCtx,
744 compressedBuffer, compressedBufferSize,
745 CNBuffer, CNBuffSize, STATIC_CCTX_LEVEL),
746 cSize=r );
747 DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n",
748 (unsigned)cSize, (double)cSize/CNBuffSize*100);
749
750 DISPLAYLEVEL(3, "test%3i : simple decompression test with static DCtx : ", testNb++);
751 { size_t const r = ZSTD_decompressDCtx(staticDCtx,
752 decodedBuffer, CNBuffSize,
753 compressedBuffer, cSize);
754 if (r != CNBuffSize) goto _output_error; }
755 DISPLAYLEVEL(3, "OK \n");
756
757 DISPLAYLEVEL(3, "test%3i : check decompressed result : ", testNb++);
758 { size_t u;
759 for (u=0; u<CNBuffSize; u++) {
760 if (((BYTE*)decodedBuffer)[u] != ((BYTE*)CNBuffer)[u])
761 goto _output_error;;
762 } }
763 DISPLAYLEVEL(3, "OK \n");
764
765 DISPLAYLEVEL(3, "test%3i : init CCtx for too large level (must fail) : ", testNb++);
766 { size_t const r = ZSTD_compressBegin(staticCCtx, ZSTD_maxCLevel());
767 if (!ZSTD_isError(r)) goto _output_error; }
768 DISPLAYLEVEL(3, "OK \n");
769
770 DISPLAYLEVEL(3, "test%3i : init CCtx for small level %u (should work again) : ", testNb++, 1);
771 { size_t const r = ZSTD_compressBegin(staticCCtx, 1);
772 if (ZSTD_isError(r)) goto _output_error; }
773 DISPLAYLEVEL(3, "OK \n");
774
775 DISPLAYLEVEL(3, "test%3i : init CStream for small level %u : ", testNb++, 1);
776 { size_t const r = ZSTD_initCStream(staticCCtx, 1);
777 if (ZSTD_isError(r)) goto _output_error; }
778 DISPLAYLEVEL(3, "OK \n");
779
780 DISPLAYLEVEL(3, "test%3i : init CStream with dictionary (should fail) : ", testNb++);
781 { size_t const r = ZSTD_initCStream_usingDict(staticCCtx, CNBuffer, 64 KB, 1);
782 if (!ZSTD_isError(r)) goto _output_error; }
783 DISPLAYLEVEL(3, "OK \n");
784
785 DISPLAYLEVEL(3, "test%3i : init DStream (should fail) : ", testNb++);
786 { size_t const r = ZSTD_initDStream(staticDCtx);
787 if (ZSTD_isError(r)) goto _output_error; }
788 { ZSTD_outBuffer output = { decodedBuffer, CNBuffSize, 0 };
789 ZSTD_inBuffer input = { compressedBuffer, ZSTD_FRAMEHEADERSIZE_MAX+1, 0 };
790 size_t const r = ZSTD_decompressStream(staticDCtx, &output, &input);
791 if (!ZSTD_isError(r)) goto _output_error;
792 }
793 DISPLAYLEVEL(3, "OK \n");
794 }
795 free(staticCCtxBuffer);
796 free(staticDCtxBuffer);
797 }
798
799 DISPLAYLEVEL(3, "test%3i : Static negative levels : ", testNb++);
800 { size_t const cctxSizeN1 = ZSTD_estimateCCtxSize(-1);
801 size_t const cctxSizeP1 = ZSTD_estimateCCtxSize(1);
802 size_t const cstreamSizeN1 = ZSTD_estimateCStreamSize(-1);
803 size_t const cstreamSizeP1 = ZSTD_estimateCStreamSize(1);
804
805 if (!(0 < cctxSizeN1 && cctxSizeN1 <= cctxSizeP1)) goto _output_error;
806 if (!(0 < cstreamSizeN1 && cstreamSizeN1 <= cstreamSizeP1)) goto _output_error;
807 }
808 DISPLAYLEVEL(3, "OK \n");
809
810
811 /* ZSTDMT simple MT compression test */
812 DISPLAYLEVEL(3, "test%3i : create ZSTDMT CCtx : ", testNb++);
813 { ZSTDMT_CCtx* mtctx = ZSTDMT_createCCtx(2);
814 if (mtctx==NULL) {
815 DISPLAY("mtctx : mot enough memory, aborting \n");
816 testResult = 1;
817 goto _end;
818 }
819 DISPLAYLEVEL(3, "OK \n");
820
821 DISPLAYLEVEL(3, "test%3u : compress %u bytes with 2 threads : ", testNb++, (unsigned)CNBuffSize);
822 CHECKPLUS(r, ZSTDMT_compressCCtx(mtctx,
823 compressedBuffer, compressedBufferSize,
824 CNBuffer, CNBuffSize,
825 1),
826 cSize=r );
827 DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100);
828
829 DISPLAYLEVEL(3, "test%3i : decompressed size test : ", testNb++);
830 { unsigned long long const rSize = ZSTD_getFrameContentSize(compressedBuffer, cSize);
831 if (rSize != CNBuffSize) {
832 DISPLAY("ZSTD_getFrameContentSize incorrect : %u != %u \n", (unsigned)rSize, (unsigned)CNBuffSize);
833 goto _output_error;
834 } }
835 DISPLAYLEVEL(3, "OK \n");
836
837 DISPLAYLEVEL(3, "test%3i : decompress %u bytes : ", testNb++, (unsigned)CNBuffSize);
838 { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize);
839 if (r != CNBuffSize) goto _output_error; }
840 DISPLAYLEVEL(3, "OK \n");
841
842 DISPLAYLEVEL(3, "test%3i : check decompressed result : ", testNb++);
843 { size_t u;
844 for (u=0; u<CNBuffSize; u++) {
845 if (((BYTE*)decodedBuffer)[u] != ((BYTE*)CNBuffer)[u]) goto _output_error;;
846 } }
847 DISPLAYLEVEL(3, "OK \n");
848
849 DISPLAYLEVEL(3, "test%3i : compress -T2 with checksum : ", testNb++);
850 { ZSTD_parameters params = ZSTD_getParams(1, CNBuffSize, 0);
851 params.fParams.checksumFlag = 1;
852 params.fParams.contentSizeFlag = 1;
853 CHECKPLUS(r, ZSTDMT_compress_advanced(mtctx,
854 compressedBuffer, compressedBufferSize,
855 CNBuffer, CNBuffSize,
856 NULL, params, 3 /*overlapRLog*/),
857 cSize=r );
858 }
859 DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100);
860
861 DISPLAYLEVEL(3, "test%3i : decompress %u bytes : ", testNb++, (unsigned)CNBuffSize);
862 { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize);
863 if (r != CNBuffSize) goto _output_error; }
864 DISPLAYLEVEL(3, "OK \n");
865
866 ZSTDMT_freeCCtx(mtctx);
867 }
868
869 DISPLAYLEVEL(3, "test%3i : compress -T2 with/without literals compression : ", testNb++)
870 { ZSTD_CCtx* cctx = ZSTD_createCCtx();
871 size_t cSize1, cSize2;
872 CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 1) );
873 CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, 2) );
874 cSize1 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize);
875 CHECK(cSize1);
876 CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_literalCompressionMode, ZSTD_lcm_uncompressed) );
877 cSize2 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize);
878 CHECK(cSize2);
879 CHECK_LT(cSize1, cSize2);
880 ZSTD_freeCCtx(cctx);
881 }
882 DISPLAYLEVEL(3, "OK \n");
883
884 DISPLAYLEVEL(3, "test%3i : Multithreaded ZSTD_compress2() with rsyncable : ", testNb++)
885 { ZSTD_CCtx* cctx = ZSTD_createCCtx();
886 /* Set rsyncable and don't give the ZSTD_compressBound(CNBuffSize) so
887 * ZSTDMT is forced to not take the shortcut.
888 */
889 CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 1) );
890 CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, 1) );
891 CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_rsyncable, 1) );
892 CHECK( ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize - 1, CNBuffer, CNBuffSize) );
893 ZSTD_freeCCtx(cctx);
894 }
895 DISPLAYLEVEL(3, "OK \n");
896
897 DISPLAYLEVEL(3, "test%3i : setting multithreaded parameters : ", testNb++)
898 { ZSTD_CCtx_params* params = ZSTD_createCCtxParams();
899 int value;
900 /* Check that the overlap log and job size are unset. */
901 CHECK( ZSTD_CCtxParams_getParameter(params, ZSTD_c_overlapLog, &value) );
902 CHECK_EQ(value, 0);
903 CHECK( ZSTD_CCtxParams_getParameter(params, ZSTD_c_jobSize, &value) );
904 CHECK_EQ(value, 0);
905 /* Set and check the overlap log and job size. */
906 CHECK( ZSTD_CCtxParams_setParameter(params, ZSTD_c_overlapLog, 5) );
907 CHECK( ZSTD_CCtxParams_setParameter(params, ZSTD_c_jobSize, 2 MB) );
908 CHECK( ZSTD_CCtxParams_getParameter(params, ZSTD_c_overlapLog, &value) );
909 CHECK_EQ(value, 5);
910 CHECK( ZSTD_CCtxParams_getParameter(params, ZSTD_c_jobSize, &value) );
911 CHECK_EQ(value, 2 MB);
912 /* Set the number of workers and check the overlap log and job size. */
913 CHECK( ZSTD_CCtxParams_setParameter(params, ZSTD_c_nbWorkers, 2) );
914 CHECK( ZSTD_CCtxParams_getParameter(params, ZSTD_c_overlapLog, &value) );
915 CHECK_EQ(value, 5);
916 CHECK( ZSTD_CCtxParams_getParameter(params, ZSTD_c_jobSize, &value) );
917 CHECK_EQ(value, 2 MB);
918 ZSTD_freeCCtxParams(params);
919
920 }
921 DISPLAYLEVEL(3, "OK \n");
922
923 /* Simple API multiframe test */
924 DISPLAYLEVEL(3, "test%3i : compress multiple frames : ", testNb++);
925 { size_t off = 0;
926 int i;
927 int const segs = 4;
928 /* only use the first half so we don't push against size limit of compressedBuffer */
929 size_t const segSize = (CNBuffSize / 2) / segs;
930 for (i = 0; i < segs; i++) {
931 CHECK_V(r, ZSTD_compress(
932 (BYTE *)compressedBuffer + off, CNBuffSize - off,
933 (BYTE *)CNBuffer + segSize * i,
934 segSize, 5));
935 off += r;
936 if (i == segs/2) {
937 /* insert skippable frame */
938 const U32 skipLen = 129 KB;
939 MEM_writeLE32((BYTE*)compressedBuffer + off, ZSTD_MAGIC_SKIPPABLE_START);
940 MEM_writeLE32((BYTE*)compressedBuffer + off + 4, skipLen);
941 off += skipLen + ZSTD_SKIPPABLEHEADERSIZE;
942 }
943 }
944 cSize = off;
945 }
946 DISPLAYLEVEL(3, "OK \n");
947
948 DISPLAYLEVEL(3, "test%3i : get decompressed size of multiple frames : ", testNb++);
949 { unsigned long long const r = ZSTD_findDecompressedSize(compressedBuffer, cSize);
950 if (r != CNBuffSize / 2) goto _output_error; }
951 DISPLAYLEVEL(3, "OK \n");
952
953 DISPLAYLEVEL(3, "test%3i : get tight decompressed bound of multiple frames : ", testNb++);
954 { unsigned long long const bound = ZSTD_decompressBound(compressedBuffer, cSize);
955 if (bound != CNBuffSize / 2) goto _output_error; }
956 DISPLAYLEVEL(3, "OK \n");
957
958 DISPLAYLEVEL(3, "test%3i : decompress multiple frames : ", testNb++);
959 { CHECK_V(r, ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize));
960 if (r != CNBuffSize / 2) goto _output_error; }
961 DISPLAYLEVEL(3, "OK \n");
962
963 DISPLAYLEVEL(3, "test%3i : check decompressed result : ", testNb++);
964 if (memcmp(decodedBuffer, CNBuffer, CNBuffSize / 2) != 0) goto _output_error;
965 DISPLAYLEVEL(3, "OK \n");
966
967 /* Dictionary and CCtx Duplication tests */
968 { ZSTD_CCtx* const ctxOrig = ZSTD_createCCtx();
969 ZSTD_CCtx* const ctxDuplicated = ZSTD_createCCtx();
970 ZSTD_DCtx* const dctx = ZSTD_createDCtx();
971 static const size_t dictSize = 551;
972 assert(dctx != NULL); assert(ctxOrig != NULL); assert(ctxDuplicated != NULL);
973
974 DISPLAYLEVEL(3, "test%3i : copy context too soon : ", testNb++);
975 { size_t const copyResult = ZSTD_copyCCtx(ctxDuplicated, ctxOrig, 0);
976 if (!ZSTD_isError(copyResult)) goto _output_error; } /* error must be detected */
977 DISPLAYLEVEL(3, "OK \n");
978
979 DISPLAYLEVEL(3, "test%3i : load dictionary into context : ", testNb++);
980 CHECK( ZSTD_compressBegin_usingDict(ctxOrig, CNBuffer, dictSize, 2) );
981 CHECK( ZSTD_copyCCtx(ctxDuplicated, ctxOrig, 0) ); /* Begin_usingDict implies unknown srcSize, so match that */
982 DISPLAYLEVEL(3, "OK \n");
983
984 DISPLAYLEVEL(3, "test%3i : compress with flat dictionary : ", testNb++);
985 cSize = 0;
986 CHECKPLUS(r, ZSTD_compressEnd(ctxOrig, compressedBuffer, compressedBufferSize,
987 (const char*)CNBuffer + dictSize, CNBuffSize - dictSize),
988 cSize += r);
989 DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100);
990
991 DISPLAYLEVEL(3, "test%3i : frame built with flat dictionary should be decompressible : ", testNb++);
992 CHECKPLUS(r, ZSTD_decompress_usingDict(dctx,
993 decodedBuffer, CNBuffSize,
994 compressedBuffer, cSize,
995 CNBuffer, dictSize),
996 if (r != CNBuffSize - dictSize) goto _output_error);
997 DISPLAYLEVEL(3, "OK \n");
998
999 DISPLAYLEVEL(3, "test%3i : compress with duplicated context : ", testNb++);
1000 { size_t const cSizeOrig = cSize;
1001 cSize = 0;
1002 CHECKPLUS(r, ZSTD_compressEnd(ctxDuplicated, compressedBuffer, compressedBufferSize,
1003 (const char*)CNBuffer + dictSize, CNBuffSize - dictSize),
1004 cSize += r);
1005 if (cSize != cSizeOrig) goto _output_error; /* should be identical ==> same size */
1006 }
1007 DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100);
1008
1009 DISPLAYLEVEL(3, "test%3i : frame built with duplicated context should be decompressible : ", testNb++);
1010 CHECKPLUS(r, ZSTD_decompress_usingDict(dctx,
1011 decodedBuffer, CNBuffSize,
1012 compressedBuffer, cSize,
1013 CNBuffer, dictSize),
1014 if (r != CNBuffSize - dictSize) goto _output_error);
1015 DISPLAYLEVEL(3, "OK \n");
1016
1017 DISPLAYLEVEL(3, "test%3i : decompress with DDict : ", testNb++);
1018 { ZSTD_DDict* const ddict = ZSTD_createDDict(CNBuffer, dictSize);
1019 size_t const r = ZSTD_decompress_usingDDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, ddict);
1020 if (r != CNBuffSize - dictSize) goto _output_error;
1021 DISPLAYLEVEL(3, "OK (size of DDict : %u) \n", (unsigned)ZSTD_sizeof_DDict(ddict));
1022 ZSTD_freeDDict(ddict);
1023 }
1024
1025 DISPLAYLEVEL(3, "test%3i : decompress with static DDict : ", testNb++);
1026 { size_t const ddictBufferSize = ZSTD_estimateDDictSize(dictSize, ZSTD_dlm_byCopy);
1027 void* ddictBuffer = malloc(ddictBufferSize);
1028 if (ddictBuffer == NULL) goto _output_error;
1029 { const ZSTD_DDict* const ddict = ZSTD_initStaticDDict(ddictBuffer, ddictBufferSize, CNBuffer, dictSize, ZSTD_dlm_byCopy, ZSTD_dct_auto);
1030 size_t const r = ZSTD_decompress_usingDDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, ddict);
1031 if (r != CNBuffSize - dictSize) goto _output_error;
1032 }
1033 free(ddictBuffer);
1034 DISPLAYLEVEL(3, "OK (size of static DDict : %u) \n", (unsigned)ddictBufferSize);
1035 }
1036
1037 DISPLAYLEVEL(3, "test%3i : check content size on duplicated context : ", testNb++);
1038 { size_t const testSize = CNBuffSize / 3;
1039 { ZSTD_parameters p = ZSTD_getParams(2, testSize, dictSize);
1040 p.fParams.contentSizeFlag = 1;
1041 CHECK( ZSTD_compressBegin_advanced(ctxOrig, CNBuffer, dictSize, p, testSize-1) );
1042 }
1043 CHECK( ZSTD_copyCCtx(ctxDuplicated, ctxOrig, testSize) );
1044
1045 CHECKPLUS(r, ZSTD_compressEnd(ctxDuplicated, compressedBuffer, ZSTD_compressBound(testSize),
1046 (const char*)CNBuffer + dictSize, testSize),
1047 cSize = r);
1048 { ZSTD_frameHeader zfh;
1049 if (ZSTD_getFrameHeader(&zfh, compressedBuffer, cSize)) goto _output_error;
1050 if ((zfh.frameContentSize != testSize) && (zfh.frameContentSize != 0)) goto _output_error;
1051 } }
1052 DISPLAYLEVEL(3, "OK \n");
1053
1054 ZSTD_freeCCtx(ctxOrig);
1055 ZSTD_freeCCtx(ctxDuplicated);
1056 ZSTD_freeDCtx(dctx);
1057 }
1058
1059 /* Dictionary and dictBuilder tests */
1060 { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
1061 size_t const dictBufferCapacity = 16 KB;
1062 void* dictBuffer = malloc(dictBufferCapacity);
1063 size_t const totalSampleSize = 1 MB;
1064 size_t const sampleUnitSize = 8 KB;
1065 U32 const nbSamples = (U32)(totalSampleSize / sampleUnitSize);
1066 size_t* const samplesSizes = (size_t*) malloc(nbSamples * sizeof(size_t));
1067 size_t dictSize;
1068 U32 dictID;
1069
1070 if (dictBuffer==NULL || samplesSizes==NULL) {
1071 free(dictBuffer);
1072 free(samplesSizes);
1073 goto _output_error;
1074 }
1075
1076 DISPLAYLEVEL(3, "test%3i : dictBuilder on cyclic data : ", testNb++);
1077 assert(compressedBufferSize >= totalSampleSize);
1078 { U32 u; for (u=0; u<totalSampleSize; u++) ((BYTE*)decodedBuffer)[u] = (BYTE)u; }
1079 { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; }
1080 { size_t const sDictSize = ZDICT_trainFromBuffer(dictBuffer, dictBufferCapacity,
1081 decodedBuffer, samplesSizes, nbSamples);
1082 if (ZDICT_isError(sDictSize)) goto _output_error;
1083 DISPLAYLEVEL(3, "OK, created dictionary of size %u \n", (unsigned)sDictSize);
1084 }
1085
1086 DISPLAYLEVEL(3, "test%3i : dictBuilder : ", testNb++);
1087 { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; }
1088 dictSize = ZDICT_trainFromBuffer(dictBuffer, dictBufferCapacity,
1089 CNBuffer, samplesSizes, nbSamples);
1090 if (ZDICT_isError(dictSize)) goto _output_error;
1091 DISPLAYLEVEL(3, "OK, created dictionary of size %u \n", (unsigned)dictSize);
1092
1093 DISPLAYLEVEL(3, "test%3i : Multithreaded COVER dictBuilder : ", testNb++);
1094 { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; }
1095 { ZDICT_cover_params_t coverParams;
1096 memset(&coverParams, 0, sizeof(coverParams));
1097 coverParams.steps = 8;
1098 coverParams.nbThreads = 4;
1099 dictSize = ZDICT_optimizeTrainFromBuffer_cover(
1100 dictBuffer, dictBufferCapacity,
1101 CNBuffer, samplesSizes, nbSamples/8, /* less samples for faster tests */
1102 &coverParams);
1103 if (ZDICT_isError(dictSize)) goto _output_error;
1104 }
1105 DISPLAYLEVEL(3, "OK, created dictionary of size %u \n", (unsigned)dictSize);
1106
1107 DISPLAYLEVEL(3, "test%3i : Multithreaded FASTCOVER dictBuilder : ", testNb++);
1108 { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; }
1109 { ZDICT_fastCover_params_t fastCoverParams;
1110 memset(&fastCoverParams, 0, sizeof(fastCoverParams));
1111 fastCoverParams.steps = 8;
1112 fastCoverParams.nbThreads = 4;
1113 dictSize = ZDICT_optimizeTrainFromBuffer_fastCover(
1114 dictBuffer, dictBufferCapacity,
1115 CNBuffer, samplesSizes, nbSamples,
1116 &fastCoverParams);
1117 if (ZDICT_isError(dictSize)) goto _output_error;
1118 }
1119 DISPLAYLEVEL(3, "OK, created dictionary of size %u \n", (unsigned)dictSize);
1120
1121 DISPLAYLEVEL(3, "test%3i : check dictID : ", testNb++);
1122 dictID = ZDICT_getDictID(dictBuffer, dictSize);
1123 if (dictID==0) goto _output_error;
1124 DISPLAYLEVEL(3, "OK : %u \n", (unsigned)dictID);
1125
1126 DISPLAYLEVEL(3, "test%3i : compress with dictionary : ", testNb++);
1127 cSize = ZSTD_compress_usingDict(cctx, compressedBuffer, compressedBufferSize,
1128 CNBuffer, CNBuffSize,
1129 dictBuffer, dictSize, 4);
1130 if (ZSTD_isError(cSize)) goto _output_error;
1131 DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100);
1132
1133 DISPLAYLEVEL(3, "test%3i : retrieve dictID from dictionary : ", testNb++);
1134 { U32 const did = ZSTD_getDictID_fromDict(dictBuffer, dictSize);
1135 if (did != dictID) goto _output_error; /* non-conformant (content-only) dictionary */
1136 }
1137 DISPLAYLEVEL(3, "OK \n");
1138
1139 DISPLAYLEVEL(3, "test%3i : retrieve dictID from frame : ", testNb++);
1140 { U32 const did = ZSTD_getDictID_fromFrame(compressedBuffer, cSize);
1141 if (did != dictID) goto _output_error; /* non-conformant (content-only) dictionary */
1142 }
1143 DISPLAYLEVEL(3, "OK \n");
1144
1145 DISPLAYLEVEL(3, "test%3i : frame built with dictionary should be decompressible : ", testNb++);
1146 { ZSTD_DCtx* const dctx = ZSTD_createDCtx(); assert(dctx != NULL);
1147 CHECKPLUS(r, ZSTD_decompress_usingDict(dctx,
1148 decodedBuffer, CNBuffSize,
1149 compressedBuffer, cSize,
1150 dictBuffer, dictSize),
1151 if (r != CNBuffSize) goto _output_error);
1152 ZSTD_freeDCtx(dctx);
1153 }
1154 DISPLAYLEVEL(3, "OK \n");
1155
1156 DISPLAYLEVEL(3, "test%3i : estimate CDict size : ", testNb++);
1157 { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBuffSize, dictSize);
1158 size_t const estimatedSize = ZSTD_estimateCDictSize_advanced(dictSize, cParams, ZSTD_dlm_byRef);
1159 DISPLAYLEVEL(3, "OK : %u \n", (unsigned)estimatedSize);
1160 }
1161
1162 DISPLAYLEVEL(3, "test%3i : compress with CDict ", testNb++);
1163 { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBuffSize, dictSize);
1164 ZSTD_CDict* const cdict = ZSTD_createCDict_advanced(dictBuffer, dictSize,
1165 ZSTD_dlm_byRef, ZSTD_dct_auto,
1166 cParams, ZSTD_defaultCMem);
1167 DISPLAYLEVEL(3, "(size : %u) : ", (unsigned)ZSTD_sizeof_CDict(cdict));
1168 cSize = ZSTD_compress_usingCDict(cctx, compressedBuffer, compressedBufferSize,
1169 CNBuffer, CNBuffSize, cdict);
1170 ZSTD_freeCDict(cdict);
1171 if (ZSTD_isError(cSize)) goto _output_error;
1172 }
1173 DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100);
1174
1175 DISPLAYLEVEL(3, "test%3i : retrieve dictID from frame : ", testNb++);
1176 { U32 const did = ZSTD_getDictID_fromFrame(compressedBuffer, cSize);
1177 if (did != dictID) goto _output_error; /* non-conformant (content-only) dictionary */
1178 }
1179 DISPLAYLEVEL(3, "OK \n");
1180
1181 DISPLAYLEVEL(3, "test%3i : frame built with dictionary should be decompressible : ", testNb++);
1182 { ZSTD_DCtx* const dctx = ZSTD_createDCtx(); assert(dctx != NULL);
1183 CHECKPLUS(r, ZSTD_decompress_usingDict(dctx,
1184 decodedBuffer, CNBuffSize,
1185 compressedBuffer, cSize,
1186 dictBuffer, dictSize),
1187 if (r != CNBuffSize) goto _output_error);
1188 ZSTD_freeDCtx(dctx);
1189 }
1190 DISPLAYLEVEL(3, "OK \n");
1191
1192 DISPLAYLEVEL(3, "test%3i : compress with static CDict : ", testNb++);
1193 { int const maxLevel = ZSTD_maxCLevel();
1194 int level;
1195 for (level = 1; level <= maxLevel; ++level) {
1196 ZSTD_compressionParameters const cParams = ZSTD_getCParams(level, CNBuffSize, dictSize);
1197 size_t const cdictSize = ZSTD_estimateCDictSize_advanced(dictSize, cParams, ZSTD_dlm_byCopy);
1198 void* const cdictBuffer = malloc(cdictSize);
1199 if (cdictBuffer==NULL) goto _output_error;
1200 { const ZSTD_CDict* const cdict = ZSTD_initStaticCDict(
1201 cdictBuffer, cdictSize,
1202 dictBuffer, dictSize,
1203 ZSTD_dlm_byCopy, ZSTD_dct_auto,
1204 cParams);
1205 if (cdict == NULL) {
1206 DISPLAY("ZSTD_initStaticCDict failed ");
1207 goto _output_error;
1208 }
1209 cSize = ZSTD_compress_usingCDict(cctx,
1210 compressedBuffer, compressedBufferSize,
1211 CNBuffer, MIN(10 KB, CNBuffSize), cdict);
1212 if (ZSTD_isError(cSize)) {
1213 DISPLAY("ZSTD_compress_usingCDict failed ");
1214 goto _output_error;
1215 } }
1216 free(cdictBuffer);
1217 } }
1218 DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100);
1219
1220 DISPLAYLEVEL(3, "test%3i : ZSTD_compress_usingCDict_advanced, no contentSize, no dictID : ", testNb++);
1221 { ZSTD_frameParameters const fParams = { 0 /* frameSize */, 1 /* checksum */, 1 /* noDictID*/ };
1222 ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBuffSize, dictSize);
1223 ZSTD_CDict* const cdict = ZSTD_createCDict_advanced(dictBuffer, dictSize, ZSTD_dlm_byRef, ZSTD_dct_auto, cParams, ZSTD_defaultCMem);
1224 cSize = ZSTD_compress_usingCDict_advanced(cctx, compressedBuffer, compressedBufferSize,
1225 CNBuffer, CNBuffSize, cdict, fParams);
1226 ZSTD_freeCDict(cdict);
1227 if (ZSTD_isError(cSize)) goto _output_error;
1228 }
1229 DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100);
1230
1231 DISPLAYLEVEL(3, "test%3i : try retrieving contentSize from frame : ", testNb++);
1232 { U64 const contentSize = ZSTD_getFrameContentSize(compressedBuffer, cSize);
1233 if (contentSize != ZSTD_CONTENTSIZE_UNKNOWN) goto _output_error;
1234 }
1235 DISPLAYLEVEL(3, "OK (unknown)\n");
1236
1237 DISPLAYLEVEL(3, "test%3i : frame built without dictID should be decompressible : ", testNb++);
1238 { ZSTD_DCtx* const dctx = ZSTD_createDCtx(); assert(dctx != NULL);
1239 CHECKPLUS(r, ZSTD_decompress_usingDict(dctx,
1240 decodedBuffer, CNBuffSize,
1241 compressedBuffer, cSize,
1242 dictBuffer, dictSize),
1243 if (r != CNBuffSize) goto _output_error);
1244 ZSTD_freeDCtx(dctx);
1245 }
1246 DISPLAYLEVEL(3, "OK \n");
1247
1248 DISPLAYLEVEL(3, "test%3i : ZSTD_compress_advanced, no dictID : ", testNb++);
1249 { ZSTD_parameters p = ZSTD_getParams(3, CNBuffSize, dictSize);
1250 p.fParams.noDictIDFlag = 1;
1251 cSize = ZSTD_compress_advanced(cctx, compressedBuffer, compressedBufferSize,
1252 CNBuffer, CNBuffSize,
1253 dictBuffer, dictSize, p);
1254 if (ZSTD_isError(cSize)) goto _output_error;
1255 }
1256 DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100);
1257
1258 DISPLAYLEVEL(3, "test%3i : frame built without dictID should be decompressible : ", testNb++);
1259 { ZSTD_DCtx* const dctx = ZSTD_createDCtx(); assert(dctx != NULL);
1260 CHECKPLUS(r, ZSTD_decompress_usingDict(dctx,
1261 decodedBuffer, CNBuffSize,
1262 compressedBuffer, cSize,
1263 dictBuffer, dictSize),
1264 if (r != CNBuffSize) goto _output_error);
1265 ZSTD_freeDCtx(dctx);
1266 }
1267 DISPLAYLEVEL(3, "OK \n");
1268
1269 DISPLAYLEVEL(3, "test%3i : dictionary containing only header should return error : ", testNb++);
1270 { ZSTD_DCtx* const dctx = ZSTD_createDCtx();
1271 assert(dctx != NULL);
1272 { const size_t ret = ZSTD_decompress_usingDict(
1273 dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize,
1274 "\x37\xa4\x30\xec\x11\x22\x33\x44", 8);
1275 if (ZSTD_getErrorCode(ret) != ZSTD_error_dictionary_corrupted)
1276 goto _output_error;
1277 }
1278 ZSTD_freeDCtx(dctx);
1279 }
1280 DISPLAYLEVEL(3, "OK \n");
1281
1282 DISPLAYLEVEL(3, "test%3i : Building cdict w/ ZSTD_dm_fullDict on a good dictionary : ", testNb++);
1283 { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBuffSize, dictSize);
1284 ZSTD_CDict* const cdict = ZSTD_createCDict_advanced(dictBuffer, dictSize, ZSTD_dlm_byRef, ZSTD_dct_fullDict, cParams, ZSTD_defaultCMem);
1285 if (cdict==NULL) goto _output_error;
1286 ZSTD_freeCDict(cdict);
1287 }
1288 DISPLAYLEVEL(3, "OK \n");
1289
1290 DISPLAYLEVEL(3, "test%3i : Building cdict w/ ZSTD_dm_fullDict on a rawContent (must fail) : ", testNb++);
1291 { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBuffSize, dictSize);
1292 ZSTD_CDict* const cdict = ZSTD_createCDict_advanced((const char*)dictBuffer+1, dictSize-1, ZSTD_dlm_byRef, ZSTD_dct_fullDict, cParams, ZSTD_defaultCMem);
1293 if (cdict!=NULL) goto _output_error;
1294 ZSTD_freeCDict(cdict);
1295 }
1296 DISPLAYLEVEL(3, "OK \n");
1297
1298 DISPLAYLEVEL(3, "test%3i : Loading rawContent starting with dict header w/ ZSTD_dm_auto should fail : ", testNb++);
1299 {
1300 size_t ret;
1301 MEM_writeLE32((char*)dictBuffer+2, ZSTD_MAGIC_DICTIONARY);
1302 /* Either operation is allowed to fail, but one must fail. */
1303 ret = ZSTD_CCtx_loadDictionary_advanced(
1304 cctx, (const char*)dictBuffer+2, dictSize-2, ZSTD_dlm_byRef, ZSTD_dct_auto);
1305 if (!ZSTD_isError(ret)) {
1306 ret = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100));
1307 if (!ZSTD_isError(ret)) goto _output_error;
1308 }
1309 }
1310 DISPLAYLEVEL(3, "OK \n");
1311
1312 DISPLAYLEVEL(3, "test%3i : Loading rawContent starting with dict header w/ ZSTD_dm_rawContent should pass : ", testNb++);
1313 {
1314 size_t ret;
1315 MEM_writeLE32((char*)dictBuffer+2, ZSTD_MAGIC_DICTIONARY);
1316 ret = ZSTD_CCtx_loadDictionary_advanced(
1317 cctx, (const char*)dictBuffer+2, dictSize-2, ZSTD_dlm_byRef, ZSTD_dct_rawContent);
1318 if (ZSTD_isError(ret)) goto _output_error;
1319 ret = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100));
1320 if (ZSTD_isError(ret)) goto _output_error;
1321 }
1322 DISPLAYLEVEL(3, "OK \n");
1323
1324 DISPLAYLEVEL(3, "test%3i : ZSTD_CCtx_refCDict() then set parameters : ", testNb++);
1325 { ZSTD_CDict* const cdict = ZSTD_createCDict(CNBuffer, dictSize, 1);
1326 CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 1) );
1327 CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_hashLog, 12 ));
1328 CHECK_Z( ZSTD_CCtx_refCDict(cctx, cdict) );
1329 CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 1) );
1330 CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_hashLog, 12 ));
1331 ZSTD_freeCDict(cdict);
1332 }
1333 DISPLAYLEVEL(3, "OK \n");
1334
1335 DISPLAYLEVEL(3, "test%3i : Loading dictionary before setting parameters is the same as loading after : ", testNb++);
1336 {
1337 size_t size1, size2;
1338 ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
1339 CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 7) );
1340 CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, CNBuffer, MIN(CNBuffSize, 10 KB)) );
1341 size1 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100 KB));
1342 if (ZSTD_isError(size1)) goto _output_error;
1343
1344 ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
1345 CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, CNBuffer, MIN(CNBuffSize, 10 KB)) );
1346 CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 7) );
1347 size2 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100 KB));
1348 if (ZSTD_isError(size2)) goto _output_error;
1349
1350 if (size1 != size2) goto _output_error;
1351 }
1352 DISPLAYLEVEL(3, "OK \n");
1353
1354 DISPLAYLEVEL(3, "test%3i : Loading a dictionary clears the prefix : ", testNb++);
1355 {
1356 CHECK_Z( ZSTD_CCtx_refPrefix(cctx, (const char*)dictBuffer, dictSize) );
1357 CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, (const char*)dictBuffer, dictSize) );
1358 CHECK_Z( ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100)) );
1359 }
1360 DISPLAYLEVEL(3, "OK \n");
1361
1362 DISPLAYLEVEL(3, "test%3i : Loading a dictionary clears the cdict : ", testNb++);
1363 {
1364 ZSTD_CDict* const cdict = ZSTD_createCDict(dictBuffer, dictSize, 1);
1365 CHECK_Z( ZSTD_CCtx_refCDict(cctx, cdict) );
1366 CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, (const char*)dictBuffer, dictSize) );
1367 CHECK_Z( ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100)) );
1368 ZSTD_freeCDict(cdict);
1369 }
1370 DISPLAYLEVEL(3, "OK \n");
1371
1372 DISPLAYLEVEL(3, "test%3i : Loading a cdict clears the prefix : ", testNb++);
1373 {
1374 ZSTD_CDict* const cdict = ZSTD_createCDict(dictBuffer, dictSize, 1);
1375 CHECK_Z( ZSTD_CCtx_refPrefix(cctx, (const char*)dictBuffer, dictSize) );
1376 CHECK_Z( ZSTD_CCtx_refCDict(cctx, cdict) );
1377 CHECK_Z( ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100)) );
1378 ZSTD_freeCDict(cdict);
1379 }
1380 DISPLAYLEVEL(3, "OK \n");
1381
1382 DISPLAYLEVEL(3, "test%3i : Loading a cdict clears the dictionary : ", testNb++);
1383 {
1384 ZSTD_CDict* const cdict = ZSTD_createCDict(dictBuffer, dictSize, 1);
1385 CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, (const char*)dictBuffer, dictSize) );
1386 CHECK_Z( ZSTD_CCtx_refCDict(cctx, cdict) );
1387 CHECK_Z( ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100)) );
1388 ZSTD_freeCDict(cdict);
1389 }
1390 DISPLAYLEVEL(3, "OK \n");
1391
1392 DISPLAYLEVEL(3, "test%3i : Loading a prefix clears the dictionary : ", testNb++);
1393 {
1394 CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, (const char*)dictBuffer, dictSize) );
1395 CHECK_Z( ZSTD_CCtx_refPrefix(cctx, (const char*)dictBuffer, dictSize) );
1396 CHECK_Z( ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100)) );
1397 }
1398 DISPLAYLEVEL(3, "OK \n");
1399
1400 DISPLAYLEVEL(3, "test%3i : Loading a prefix clears the cdict : ", testNb++);
1401 {
1402 ZSTD_CDict* const cdict = ZSTD_createCDict(dictBuffer, dictSize, 1);
1403 CHECK_Z( ZSTD_CCtx_refCDict(cctx, cdict) );
1404 CHECK_Z( ZSTD_CCtx_refPrefix(cctx, (const char*)dictBuffer, dictSize) );
1405 CHECK_Z( ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100)) );
1406 ZSTD_freeCDict(cdict);
1407 }
1408 DISPLAYLEVEL(3, "OK \n");
1409
1410 DISPLAYLEVEL(3, "test%3i : Loaded dictionary persists across reset session : ", testNb++);
1411 {
1412 size_t size1, size2;
1413 ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
1414 CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, CNBuffer, MIN(CNBuffSize, 10 KB)) );
1415 size1 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100 KB));
1416 if (ZSTD_isError(size1)) goto _output_error;
1417
1418 ZSTD_CCtx_reset(cctx, ZSTD_reset_session_only);
1419 size2 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100 KB));
1420 if (ZSTD_isError(size2)) goto _output_error;
1421
1422 if (size1 != size2) goto _output_error;
1423 }
1424 DISPLAYLEVEL(3, "OK \n");
1425
1426 DISPLAYLEVEL(3, "test%3i : Loaded dictionary is cleared after resetting parameters : ", testNb++);
1427 {
1428 size_t size1, size2;
1429 ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
1430 CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, CNBuffer, MIN(CNBuffSize, 10 KB)) );
1431 size1 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100 KB));
1432 if (ZSTD_isError(size1)) goto _output_error;
1433
1434 ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
1435 size2 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100 KB));
1436 if (ZSTD_isError(size2)) goto _output_error;
1437
1438 if (size1 == size2) goto _output_error;
1439 }
1440 DISPLAYLEVEL(3, "OK \n");
1441
1442 ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
1443 CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, dictBuffer, dictSize) );
1444 cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100 KB));
1445 CHECK_Z(cSize);
1446 DISPLAYLEVEL(3, "test%3i : ZSTD_decompressDCtx() with dictionary : ", testNb++);
1447 {
1448 ZSTD_DCtx* dctx = ZSTD_createDCtx();
1449 size_t ret;
1450 /* We should fail to decompress without a dictionary. */
1451 ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters);
1452 ret = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize);
1453 if (!ZSTD_isError(ret)) goto _output_error;
1454 /* We should succeed to decompress with the dictionary. */
1455 ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters);
1456 CHECK_Z( ZSTD_DCtx_loadDictionary(dctx, dictBuffer, dictSize) );
1457 CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) );
1458 /* The dictionary should presist across calls. */
1459 CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) );
1460 /* When we reset the context the dictionary is cleared. */
1461 ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters);
1462 ret = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize);
1463 if (!ZSTD_isError(ret)) goto _output_error;
1464 ZSTD_freeDCtx(dctx);
1465 }
1466 DISPLAYLEVEL(3, "OK \n");
1467
1468 DISPLAYLEVEL(3, "test%3i : ZSTD_decompressDCtx() with ddict : ", testNb++);
1469 {
1470 ZSTD_DCtx* dctx = ZSTD_createDCtx();
1471 ZSTD_DDict* ddict = ZSTD_createDDict(dictBuffer, dictSize);
1472 size_t ret;
1473 /* We should succeed to decompress with the ddict. */
1474 ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters);
1475 CHECK_Z( ZSTD_DCtx_refDDict(dctx, ddict) );
1476 CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) );
1477 /* The ddict should presist across calls. */
1478 CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) );
1479 /* When we reset the context the ddict is cleared. */
1480 ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters);
1481 ret = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize);
1482 if (!ZSTD_isError(ret)) goto _output_error;
1483 ZSTD_freeDCtx(dctx);
1484 ZSTD_freeDDict(ddict);
1485 }
1486 DISPLAYLEVEL(3, "OK \n");
1487
1488 DISPLAYLEVEL(3, "test%3i : ZSTD_decompressDCtx() with prefix : ", testNb++);
1489 {
1490 ZSTD_DCtx* dctx = ZSTD_createDCtx();
1491 size_t ret;
1492 /* We should succeed to decompress with the prefix. */
1493 ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters);
1494 CHECK_Z( ZSTD_DCtx_refPrefix_advanced(dctx, dictBuffer, dictSize, ZSTD_dct_auto) );
1495 CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) );
1496 /* The prefix should be cleared after the first compression. */
1497 ret = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize);
1498 if (!ZSTD_isError(ret)) goto _output_error;
1499 ZSTD_freeDCtx(dctx);
1500 }
1501 DISPLAYLEVEL(3, "OK \n");
1502
1503 DISPLAYLEVEL(3, "test%3i : Dictionary with non-default repcodes : ", testNb++);
1504 { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; }
1505 dictSize = ZDICT_trainFromBuffer(dictBuffer, dictSize,
1506 CNBuffer, samplesSizes, nbSamples);
1507 if (ZDICT_isError(dictSize)) goto _output_error;
1508 /* Set all the repcodes to non-default */
1509 {
1510 BYTE* dictPtr = (BYTE*)dictBuffer;
1511 BYTE* dictLimit = dictPtr + dictSize - 12;
1512 /* Find the repcodes */
1513 while (dictPtr < dictLimit &&
1514 (MEM_readLE32(dictPtr) != 1 || MEM_readLE32(dictPtr + 4) != 4 ||
1515 MEM_readLE32(dictPtr + 8) != 8)) {
1516 ++dictPtr;
1517 }
1518 if (dictPtr >= dictLimit) goto _output_error;
1519 MEM_writeLE32(dictPtr + 0, 10);
1520 MEM_writeLE32(dictPtr + 4, 10);
1521 MEM_writeLE32(dictPtr + 8, 10);
1522 /* Set the last 8 bytes to 'x' */
1523 memset((BYTE*)dictBuffer + dictSize - 8, 'x', 8);
1524 }
1525 /* The optimal parser checks all the repcodes.
1526 * Make sure at least one is a match >= targetLength so that it is
1527 * immediately chosen. This will make sure that the compressor and
1528 * decompressor agree on at least one of the repcodes.
1529 */
1530 { size_t dSize;
1531 BYTE data[1024];
1532 ZSTD_DCtx* const dctx = ZSTD_createDCtx();
1533 ZSTD_compressionParameters const cParams = ZSTD_getCParams(19, CNBuffSize, dictSize);
1534 ZSTD_CDict* const cdict = ZSTD_createCDict_advanced(dictBuffer, dictSize,
1535 ZSTD_dlm_byRef, ZSTD_dct_auto,
1536 cParams, ZSTD_defaultCMem);
1537 assert(dctx != NULL); assert(cdict != NULL);
1538 memset(data, 'x', sizeof(data));
1539 cSize = ZSTD_compress_usingCDict(cctx, compressedBuffer, compressedBufferSize,
1540 data, sizeof(data), cdict);
1541 ZSTD_freeCDict(cdict);
1542 if (ZSTD_isError(cSize)) { DISPLAYLEVEL(5, "Compression error %s : ", ZSTD_getErrorName(cSize)); goto _output_error; }
1543 dSize = ZSTD_decompress_usingDict(dctx, decodedBuffer, sizeof(data), compressedBuffer, cSize, dictBuffer, dictSize);
1544 if (ZSTD_isError(dSize)) { DISPLAYLEVEL(5, "Decompression error %s : ", ZSTD_getErrorName(dSize)); goto _output_error; }
1545 if (memcmp(data, decodedBuffer, sizeof(data))) { DISPLAYLEVEL(5, "Data corruption : "); goto _output_error; }
1546 ZSTD_freeDCtx(dctx);
1547 }
1548 DISPLAYLEVEL(3, "OK \n");
1549
1550 ZSTD_freeCCtx(cctx);
1551 free(dictBuffer);
1552 free(samplesSizes);
1553 }
1554
1555 /* COVER dictionary builder tests */
1556 { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
1557 size_t dictSize = 16 KB;
1558 size_t optDictSize = dictSize;
1559 void* dictBuffer = malloc(dictSize);
1560 size_t const totalSampleSize = 1 MB;
1561 size_t const sampleUnitSize = 8 KB;
1562 U32 const nbSamples = (U32)(totalSampleSize / sampleUnitSize);
1563 size_t* const samplesSizes = (size_t*) malloc(nbSamples * sizeof(size_t));
1564 ZDICT_cover_params_t params;
1565 U32 dictID;
1566
1567 if (dictBuffer==NULL || samplesSizes==NULL) {
1568 free(dictBuffer);
1569 free(samplesSizes);
1570 goto _output_error;
1571 }
1572
1573 DISPLAYLEVEL(3, "test%3i : ZDICT_trainFromBuffer_cover : ", testNb++);
1574 { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; }
1575 memset(&params, 0, sizeof(params));
1576 params.d = 1 + (FUZ_rand(&seed) % 16);
1577 params.k = params.d + (FUZ_rand(&seed) % 256);
1578 dictSize = ZDICT_trainFromBuffer_cover(dictBuffer, dictSize,
1579 CNBuffer, samplesSizes, nbSamples,
1580 params);
1581 if (ZDICT_isError(dictSize)) goto _output_error;
1582 DISPLAYLEVEL(3, "OK, created dictionary of size %u \n", (unsigned)dictSize);
1583
1584 DISPLAYLEVEL(3, "test%3i : check dictID : ", testNb++);
1585 dictID = ZDICT_getDictID(dictBuffer, dictSize);
1586 if (dictID==0) goto _output_error;
1587 DISPLAYLEVEL(3, "OK : %u \n", (unsigned)dictID);
1588
1589 DISPLAYLEVEL(3, "test%3i : ZDICT_optimizeTrainFromBuffer_cover : ", testNb++);
1590 memset(&params, 0, sizeof(params));
1591 params.steps = 4;
1592 optDictSize = ZDICT_optimizeTrainFromBuffer_cover(dictBuffer, optDictSize,
1593 CNBuffer, samplesSizes,
1594 nbSamples / 4, &params);
1595 if (ZDICT_isError(optDictSize)) goto _output_error;
1596 DISPLAYLEVEL(3, "OK, created dictionary of size %u \n", (unsigned)optDictSize);
1597
1598 DISPLAYLEVEL(3, "test%3i : check dictID : ", testNb++);
1599 dictID = ZDICT_getDictID(dictBuffer, optDictSize);
1600 if (dictID==0) goto _output_error;
1601 DISPLAYLEVEL(3, "OK : %u \n", (unsigned)dictID);
1602
1603 ZSTD_freeCCtx(cctx);
1604 free(dictBuffer);
1605 free(samplesSizes);
1606 }
1607
1608 /* Decompression defense tests */
1609 DISPLAYLEVEL(3, "test%3i : Check input length for magic number : ", testNb++);
1610 { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, CNBuffer, 3); /* too small input */
1611 if (!ZSTD_isError(r)) goto _output_error;
1612 if (ZSTD_getErrorCode(r) != ZSTD_error_srcSize_wrong) goto _output_error; }
1613 DISPLAYLEVEL(3, "OK \n");
1614
1615 DISPLAYLEVEL(3, "test%3i : Check magic Number : ", testNb++);
1616 ((char*)(CNBuffer))[0] = 1;
1617 { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, CNBuffer, 4);
1618 if (!ZSTD_isError(r)) goto _output_error; }
1619 DISPLAYLEVEL(3, "OK \n");
1620
1621 /* content size verification test */
1622 DISPLAYLEVEL(3, "test%3i : Content size verification : ", testNb++);
1623 { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
1624 size_t const srcSize = 5000;
1625 size_t const wrongSrcSize = (srcSize + 1000);
1626 ZSTD_parameters params = ZSTD_getParams(1, wrongSrcSize, 0);
1627 params.fParams.contentSizeFlag = 1;
1628 CHECK( ZSTD_compressBegin_advanced(cctx, NULL, 0, params, wrongSrcSize) );
1629 { size_t const result = ZSTD_compressEnd(cctx, decodedBuffer, CNBuffSize, CNBuffer, srcSize);
1630 if (!ZSTD_isError(result)) goto _output_error;
1631 if (ZSTD_getErrorCode(result) != ZSTD_error_srcSize_wrong) goto _output_error;
1632 DISPLAYLEVEL(3, "OK : %s \n", ZSTD_getErrorName(result));
1633 }
1634 ZSTD_freeCCtx(cctx);
1635 }
1636
1637 /* negative compression level test : ensure simple API and advanced API produce same result */
1638 DISPLAYLEVEL(3, "test%3i : negative compression level : ", testNb++);
1639 { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
1640 size_t const srcSize = CNBuffSize / 5;
1641 int const compressionLevel = -1;
1642
1643 assert(cctx != NULL);
1644 { ZSTD_parameters const params = ZSTD_getParams(compressionLevel, srcSize, 0);
1645 size_t const cSize_1pass = ZSTD_compress_advanced(cctx,
1646 compressedBuffer, compressedBufferSize,
1647 CNBuffer, srcSize,
1648 NULL, 0,
1649 params);
1650 if (ZSTD_isError(cSize_1pass)) goto _output_error;
1651
1652 CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, compressionLevel) );
1653 { size_t const compressionResult = ZSTD_compress2(cctx,
1654 compressedBuffer, compressedBufferSize,
1655 CNBuffer, srcSize);
1656 DISPLAYLEVEL(5, "simple=%zu vs %zu=advanced : ", cSize_1pass, compressionResult);
1657 if (ZSTD_isError(compressionResult)) goto _output_error;
1658 if (compressionResult != cSize_1pass) goto _output_error;
1659 } }
1660 ZSTD_freeCCtx(cctx);
1661 }
1662 DISPLAYLEVEL(3, "OK \n");
1663
1664 /* parameters order test */
1665 { size_t const inputSize = CNBuffSize / 2;
1666 U64 xxh64;
1667
1668 { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
1669 DISPLAYLEVEL(3, "test%3i : parameters in order : ", testNb++);
1670 assert(cctx != NULL);
1671 CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 2) );
1672 CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_enableLongDistanceMatching, 1) );
1673 CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_windowLog, 18) );
1674 { size_t const compressedSize = ZSTD_compress2(cctx,
1675 compressedBuffer, ZSTD_compressBound(inputSize),
1676 CNBuffer, inputSize);
1677 CHECK(compressedSize);
1678 cSize = compressedSize;
1679 xxh64 = XXH64(compressedBuffer, compressedSize, 0);
1680 }
1681 DISPLAYLEVEL(3, "OK (compress : %u -> %u bytes)\n", (unsigned)inputSize, (unsigned)cSize);
1682 ZSTD_freeCCtx(cctx);
1683 }
1684
1685 { ZSTD_CCtx* cctx = ZSTD_createCCtx();
1686 DISPLAYLEVEL(3, "test%3i : parameters disordered : ", testNb++);
1687 CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_windowLog, 18) );
1688 CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_enableLongDistanceMatching, 1) );
1689 CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 2) );
1690 { size_t const result = ZSTD_compress2(cctx,
1691 compressedBuffer, ZSTD_compressBound(inputSize),
1692 CNBuffer, inputSize);
1693 CHECK(result);
1694 if (result != cSize) goto _output_error; /* must result in same compressed result, hence same size */
1695 if (XXH64(compressedBuffer, result, 0) != xxh64) goto _output_error; /* must result in exactly same content, hence same hash */
1696 DISPLAYLEVEL(3, "OK (compress : %u -> %u bytes)\n", (unsigned)inputSize, (unsigned)result);
1697 }
1698 ZSTD_freeCCtx(cctx);
1699 }
1700 }
1701
1702 /* advanced parameters for decompression */
1703 { ZSTD_DCtx* const dctx = ZSTD_createDCtx();
1704 assert(dctx != NULL);
1705
1706 DISPLAYLEVEL(3, "test%3i : get dParameter bounds ", testNb++);
1707 { ZSTD_bounds const bounds = ZSTD_dParam_getBounds(ZSTD_d_windowLogMax);
1708 CHECK(bounds.error);
1709 }
1710 DISPLAYLEVEL(3, "OK \n");
1711
1712 DISPLAYLEVEL(3, "test%3i : wrong dParameter : ", testNb++);
1713 { size_t const sr = ZSTD_DCtx_setParameter(dctx, (ZSTD_dParameter)999999, 0);
1714 if (!ZSTD_isError(sr)) goto _output_error;
1715 }
1716 { ZSTD_bounds const bounds = ZSTD_dParam_getBounds((ZSTD_dParameter)999998);
1717 if (!ZSTD_isError(bounds.error)) goto _output_error;
1718 }
1719 DISPLAYLEVEL(3, "OK \n");
1720
1721 DISPLAYLEVEL(3, "test%3i : out of bound dParameter : ", testNb++);
1722 { size_t const sr = ZSTD_DCtx_setParameter(dctx, ZSTD_d_windowLogMax, 9999);
1723 if (!ZSTD_isError(sr)) goto _output_error;
1724 }
1725 { size_t const sr = ZSTD_DCtx_setParameter(dctx, ZSTD_d_format, (ZSTD_format_e)888);
1726 if (!ZSTD_isError(sr)) goto _output_error;
1727 }
1728 DISPLAYLEVEL(3, "OK \n");
1729
1730 ZSTD_freeDCtx(dctx);
1731 }
1732
1733
1734 /* custom formats tests */
1735 { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
1736 ZSTD_DCtx* const dctx = ZSTD_createDCtx();
1737 size_t const inputSize = CNBuffSize / 2; /* won't cause pb with small dict size */
1738 assert(dctx != NULL); assert(cctx != NULL);
1739
1740 /* basic block compression */
1741 DISPLAYLEVEL(3, "test%3i : magic-less format test : ", testNb++);
1742 CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_format, ZSTD_f_zstd1_magicless) );
1743 { ZSTD_inBuffer in = { CNBuffer, inputSize, 0 };
1744 ZSTD_outBuffer out = { compressedBuffer, ZSTD_compressBound(inputSize), 0 };
1745 size_t const result = ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end);
1746 if (result != 0) goto _output_error;
1747 if (in.pos != in.size) goto _output_error;
1748 cSize = out.pos;
1749 }
1750 DISPLAYLEVEL(3, "OK (compress : %u -> %u bytes)\n", (unsigned)inputSize, (unsigned)cSize);
1751
1752 DISPLAYLEVEL(3, "test%3i : decompress normally (should fail) : ", testNb++);
1753 { size_t const decodeResult = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize);
1754 if (ZSTD_getErrorCode(decodeResult) != ZSTD_error_prefix_unknown) goto _output_error;
1755 DISPLAYLEVEL(3, "OK : %s \n", ZSTD_getErrorName(decodeResult));
1756 }
1757
1758 DISPLAYLEVEL(3, "test%3i : decompress of magic-less frame : ", testNb++);
1759 ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters);
1760 CHECK( ZSTD_DCtx_setParameter(dctx, ZSTD_d_format, ZSTD_f_zstd1_magicless) );
1761 { ZSTD_frameHeader zfh;
1762 size_t const zfhrt = ZSTD_getFrameHeader_advanced(&zfh, compressedBuffer, cSize, ZSTD_f_zstd1_magicless);
1763 if (zfhrt != 0) goto _output_error;
1764 }
1765 /* one shot */
1766 { size_t const result = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize);
1767 if (result != inputSize) goto _output_error;
1768 DISPLAYLEVEL(3, "one-shot OK, ");
1769 }
1770 /* streaming */
1771 { ZSTD_inBuffer in = { compressedBuffer, cSize, 0 };
1772 ZSTD_outBuffer out = { decodedBuffer, CNBuffSize, 0 };
1773 size_t const result = ZSTD_decompressStream(dctx, &out, &in);
1774 if (result != 0) goto _output_error;
1775 if (in.pos != in.size) goto _output_error;
1776 if (out.pos != inputSize) goto _output_error;
1777 DISPLAYLEVEL(3, "streaming OK : regenerated %u bytes \n", (unsigned)out.pos);
1778 }
1779
1780 ZSTD_freeCCtx(cctx);
1781 ZSTD_freeDCtx(dctx);
1782 }
1783
1784 /* block API tests */
1785 { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
1786 ZSTD_DCtx* const dctx = ZSTD_createDCtx();
1787 static const size_t dictSize = 65 KB;
1788 static const size_t blockSize = 100 KB; /* won't cause pb with small dict size */
1789 size_t cSize2;
1790 assert(cctx != NULL); assert(dctx != NULL);
1791
1792 /* basic block compression */
1793 DISPLAYLEVEL(3, "test%3i : Block compression test : ", testNb++);
1794 CHECK( ZSTD_compressBegin(cctx, 5) );
1795 CHECK( ZSTD_getBlockSize(cctx) >= blockSize);
1796 cSize = ZSTD_compressBlock(cctx, compressedBuffer, ZSTD_compressBound(blockSize), CNBuffer, blockSize);
1797 if (ZSTD_isError(cSize)) goto _output_error;
1798 DISPLAYLEVEL(3, "OK \n");
1799
1800 DISPLAYLEVEL(3, "test%3i : Block decompression test : ", testNb++);
1801 CHECK( ZSTD_decompressBegin(dctx) );
1802 { CHECK_V(r, ZSTD_decompressBlock(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) );
1803 if (r != blockSize) goto _output_error; }
1804 DISPLAYLEVEL(3, "OK \n");
1805
1806 /* very long stream of block compression */
1807 DISPLAYLEVEL(3, "test%3i : Huge block streaming compression test : ", testNb++);
1808 CHECK( ZSTD_compressBegin(cctx, -199) ); /* we just want to quickly overflow internal U32 index */
1809 CHECK( ZSTD_getBlockSize(cctx) >= blockSize);
1810 { U64 const toCompress = 5000000000ULL; /* > 4 GB */
1811 U64 compressed = 0;
1812 while (compressed < toCompress) {
1813 size_t const blockCSize = ZSTD_compressBlock(cctx, compressedBuffer, ZSTD_compressBound(blockSize), CNBuffer, blockSize);
1814 assert(blockCSize != 0);
1815 if (ZSTD_isError(blockCSize)) goto _output_error;
1816 compressed += blockCSize;
1817 }
1818 }
1819 DISPLAYLEVEL(3, "OK \n");
1820
1821 /* dictionary block compression */
1822 DISPLAYLEVEL(3, "test%3i : Dictionary Block compression test : ", testNb++);
1823 CHECK( ZSTD_compressBegin_usingDict(cctx, CNBuffer, dictSize, 5) );
1824 cSize = ZSTD_compressBlock(cctx, compressedBuffer, ZSTD_compressBound(blockSize), (char*)CNBuffer+dictSize, blockSize);
1825 if (ZSTD_isError(cSize)) goto _output_error;
1826 cSize2 = ZSTD_compressBlock(cctx, (char*)compressedBuffer+cSize, ZSTD_compressBound(blockSize), (char*)CNBuffer+dictSize+blockSize, blockSize);
1827 if (ZSTD_isError(cSize2)) goto _output_error;
1828 memcpy((char*)compressedBuffer+cSize, (char*)CNBuffer+dictSize+blockSize, blockSize); /* fake non-compressed block */
1829 cSize2 = ZSTD_compressBlock(cctx, (char*)compressedBuffer+cSize+blockSize, ZSTD_compressBound(blockSize),
1830 (char*)CNBuffer+dictSize+2*blockSize, blockSize);
1831 if (ZSTD_isError(cSize2)) goto _output_error;
1832 DISPLAYLEVEL(3, "OK \n");
1833
1834 DISPLAYLEVEL(3, "test%3i : Dictionary Block decompression test : ", testNb++);
1835 CHECK( ZSTD_decompressBegin_usingDict(dctx, CNBuffer, dictSize) );
1836 { CHECK_V( r, ZSTD_decompressBlock(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) );
1837 if (r != blockSize) goto _output_error; }
1838 ZSTD_insertBlock(dctx, (char*)decodedBuffer+blockSize, blockSize); /* insert non-compressed block into dctx history */
1839 { CHECK_V( r, ZSTD_decompressBlock(dctx, (char*)decodedBuffer+2*blockSize, CNBuffSize, (char*)compressedBuffer+cSize+blockSize, cSize2) );
1840 if (r != blockSize) goto _output_error; }
1841 DISPLAYLEVEL(3, "OK \n");
1842
1843 DISPLAYLEVEL(3, "test%3i : Block compression with CDict : ", testNb++);
1844 { ZSTD_CDict* const cdict = ZSTD_createCDict(CNBuffer, dictSize, 3);
1845 if (cdict==NULL) goto _output_error;
1846 CHECK( ZSTD_compressBegin_usingCDict(cctx, cdict) );
1847 CHECK( ZSTD_compressBlock(cctx, compressedBuffer, ZSTD_compressBound(blockSize), (char*)CNBuffer+dictSize, blockSize) );
1848 ZSTD_freeCDict(cdict);
1849 }
1850 DISPLAYLEVEL(3, "OK \n");
1851
1852 ZSTD_freeCCtx(cctx);
1853 ZSTD_freeDCtx(dctx);
1854 }
1855
1856 /* long rle test */
1857 { size_t sampleSize = 0;
1858 DISPLAYLEVEL(3, "test%3i : Long RLE test : ", testNb++);
1859 RDG_genBuffer(CNBuffer, sampleSize, compressibility, 0., seed+1);
1860 memset((char*)CNBuffer+sampleSize, 'B', 256 KB - 1);
1861 sampleSize += 256 KB - 1;
1862 RDG_genBuffer((char*)CNBuffer+sampleSize, 96 KB, compressibility, 0., seed+2);
1863 sampleSize += 96 KB;
1864 cSize = ZSTD_compress(compressedBuffer, ZSTD_compressBound(sampleSize), CNBuffer, sampleSize, 1);
1865 if (ZSTD_isError(cSize)) goto _output_error;
1866 { CHECK_V(regenSize, ZSTD_decompress(decodedBuffer, sampleSize, compressedBuffer, cSize));
1867 if (regenSize!=sampleSize) goto _output_error; }
1868 DISPLAYLEVEL(3, "OK \n");
1869 }
1870
1871 /* All zeroes test (test bug #137) */
1872 #define ZEROESLENGTH 100
1873 DISPLAYLEVEL(3, "test%3i : compress %u zeroes : ", testNb++, ZEROESLENGTH);
1874 memset(CNBuffer, 0, ZEROESLENGTH);
1875 { CHECK_V(r, ZSTD_compress(compressedBuffer, ZSTD_compressBound(ZEROESLENGTH), CNBuffer, ZEROESLENGTH, 1) );
1876 cSize = r; }
1877 DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/ZEROESLENGTH*100);
1878
1879 DISPLAYLEVEL(3, "test%3i : decompress %u zeroes : ", testNb++, ZEROESLENGTH);
1880 { CHECK_V(r, ZSTD_decompress(decodedBuffer, ZEROESLENGTH, compressedBuffer, cSize) );
1881 if (r != ZEROESLENGTH) goto _output_error; }
1882 DISPLAYLEVEL(3, "OK \n");
1883
1884 /* nbSeq limit test */
1885 #define _3BYTESTESTLENGTH 131000
1886 #define NB3BYTESSEQLOG 9
1887 #define NB3BYTESSEQ (1 << NB3BYTESSEQLOG)
1888 #define NB3BYTESSEQMASK (NB3BYTESSEQ-1)
1889 /* creates a buffer full of 3-bytes sequences */
1890 { BYTE _3BytesSeqs[NB3BYTESSEQ][3];
1891 U32 rSeed = 1;
1892
1893 /* create batch of 3-bytes sequences */
1894 { int i;
1895 for (i=0; i < NB3BYTESSEQ; i++) {
1896 _3BytesSeqs[i][0] = (BYTE)(FUZ_rand(&rSeed) & 255);
1897 _3BytesSeqs[i][1] = (BYTE)(FUZ_rand(&rSeed) & 255);
1898 _3BytesSeqs[i][2] = (BYTE)(FUZ_rand(&rSeed) & 255);
1899 } }
1900
1901 /* randomly fills CNBuffer with prepared 3-bytes sequences */
1902 { int i;
1903 for (i=0; i < _3BYTESTESTLENGTH; i += 3) { /* note : CNBuffer size > _3BYTESTESTLENGTH+3 */
1904 U32 const id = FUZ_rand(&rSeed) & NB3BYTESSEQMASK;
1905 ((BYTE*)CNBuffer)[i+0] = _3BytesSeqs[id][0];
1906 ((BYTE*)CNBuffer)[i+1] = _3BytesSeqs[id][1];
1907 ((BYTE*)CNBuffer)[i+2] = _3BytesSeqs[id][2];
1908 } } }
1909 DISPLAYLEVEL(3, "test%3i : growing nbSeq : ", testNb++);
1910 { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
1911 size_t const maxNbSeq = _3BYTESTESTLENGTH / 3;
1912 size_t const bound = ZSTD_compressBound(_3BYTESTESTLENGTH);
1913 size_t nbSeq = 1;
1914 while (nbSeq <= maxNbSeq) {
1915 CHECK(ZSTD_compressCCtx(cctx, compressedBuffer, bound, CNBuffer, nbSeq * 3, 19));
1916 /* Check every sequence for the first 100, then skip more rapidly. */
1917 if (nbSeq < 100) {
1918 ++nbSeq;
1919 } else {
1920 nbSeq += (nbSeq >> 2);
1921 }
1922 }
1923 ZSTD_freeCCtx(cctx);
1924 }
1925 DISPLAYLEVEL(3, "OK \n");
1926
1927 DISPLAYLEVEL(3, "test%3i : compress lots 3-bytes sequences : ", testNb++);
1928 { CHECK_V(r, ZSTD_compress(compressedBuffer, ZSTD_compressBound(_3BYTESTESTLENGTH),
1929 CNBuffer, _3BYTESTESTLENGTH, 19) );
1930 cSize = r; }
1931 DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/_3BYTESTESTLENGTH*100);
1932
1933 DISPLAYLEVEL(3, "test%3i : decompress lots 3-bytes sequence : ", testNb++);
1934 { CHECK_V(r, ZSTD_decompress(decodedBuffer, _3BYTESTESTLENGTH, compressedBuffer, cSize) );
1935 if (r != _3BYTESTESTLENGTH) goto _output_error; }
1936 DISPLAYLEVEL(3, "OK \n");
1937
1938
1939 DISPLAYLEVEL(3, "test%3i : growing literals buffer : ", testNb++);
1940 RDG_genBuffer(CNBuffer, CNBuffSize, 0.0, 0.1, seed);
1941 { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
1942 size_t const bound = ZSTD_compressBound(CNBuffSize);
1943 size_t size = 1;
1944 while (size <= CNBuffSize) {
1945 CHECK(ZSTD_compressCCtx(cctx, compressedBuffer, bound, CNBuffer, size, 3));
1946 /* Check every size for the first 100, then skip more rapidly. */
1947 if (size < 100) {
1948 ++size;
1949 } else {
1950 size += (size >> 2);
1951 }
1952 }
1953 ZSTD_freeCCtx(cctx);
1954 }
1955 DISPLAYLEVEL(3, "OK \n");
1956
1957 DISPLAYLEVEL(3, "test%3i : incompressible data and ill suited dictionary : ", testNb++);
1958 { /* Train a dictionary on low characters */
1959 size_t dictSize = 16 KB;
1960 void* const dictBuffer = malloc(dictSize);
1961 size_t const totalSampleSize = 1 MB;
1962 size_t const sampleUnitSize = 8 KB;
1963 U32 const nbSamples = (U32)(totalSampleSize / sampleUnitSize);
1964 size_t* const samplesSizes = (size_t*) malloc(nbSamples * sizeof(size_t));
1965 if (!dictBuffer || !samplesSizes) goto _output_error;
1966 { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; }
1967 dictSize = ZDICT_trainFromBuffer(dictBuffer, dictSize, CNBuffer, samplesSizes, nbSamples);
1968 if (ZDICT_isError(dictSize)) goto _output_error;
1969 /* Reverse the characters to make the dictionary ill suited */
1970 { U32 u;
1971 for (u = 0; u < CNBuffSize; ++u) {
1972 ((BYTE*)CNBuffer)[u] = 255 - ((BYTE*)CNBuffer)[u];
1973 }
1974 }
1975 { /* Compress the data */
1976 size_t const inputSize = 500;
1977 size_t const outputSize = ZSTD_compressBound(inputSize);
1978 void* const outputBuffer = malloc(outputSize);
1979 ZSTD_CCtx* const cctx = ZSTD_createCCtx();
1980 if (!outputBuffer || !cctx) goto _output_error;
1981 CHECK(ZSTD_compress_usingDict(cctx, outputBuffer, outputSize, CNBuffer, inputSize, dictBuffer, dictSize, 1));
1982 free(outputBuffer);
1983 ZSTD_freeCCtx(cctx);
1984 }
1985
1986 free(dictBuffer);
1987 free(samplesSizes);
1988 }
1989 DISPLAYLEVEL(3, "OK \n");
1990
1991
1992 /* findFrameCompressedSize on skippable frames */
1993 DISPLAYLEVEL(3, "test%3i : frame compressed size of skippable frame : ", testNb++);
1994 { const char* frame = "\x50\x2a\x4d\x18\x05\x0\x0\0abcde";
1995 size_t const frameSrcSize = 13;
1996 if (ZSTD_findFrameCompressedSize(frame, frameSrcSize) != frameSrcSize) goto _output_error; }
1997 DISPLAYLEVEL(3, "OK \n");
1998
1999 /* error string tests */
2000 DISPLAYLEVEL(3, "test%3i : testing ZSTD error code strings : ", testNb++);
2001 if (strcmp("No error detected", ZSTD_getErrorName((ZSTD_ErrorCode)(0-ZSTD_error_no_error))) != 0) goto _output_error;
2002 if (strcmp("No error detected", ZSTD_getErrorString(ZSTD_error_no_error)) != 0) goto _output_error;
2003 if (strcmp("Unspecified error code", ZSTD_getErrorString((ZSTD_ErrorCode)(0-ZSTD_error_GENERIC))) != 0) goto _output_error;
2004 if (strcmp("Error (generic)", ZSTD_getErrorName((size_t)0-ZSTD_error_GENERIC)) != 0) goto _output_error;
2005 if (strcmp("Error (generic)", ZSTD_getErrorString(ZSTD_error_GENERIC)) != 0) goto _output_error;
2006 if (strcmp("No error detected", ZSTD_getErrorName(ZSTD_error_GENERIC)) != 0) goto _output_error;
2007 DISPLAYLEVEL(3, "OK \n");
2008
2009 DISPLAYLEVEL(3, "test%3i : testing ZSTD dictionary sizes : ", testNb++);
2010 RDG_genBuffer(CNBuffer, CNBuffSize, compressibility, 0., seed);
2011 {
2012 size_t const size = MIN(128 KB, CNBuffSize);
2013 ZSTD_CCtx* const cctx = ZSTD_createCCtx();
2014 ZSTD_CDict* const lgCDict = ZSTD_createCDict(CNBuffer, size, 1);
2015 ZSTD_CDict* const smCDict = ZSTD_createCDict(CNBuffer, 1 KB, 1);
2016 ZSTD_frameHeader lgHeader;
2017 ZSTD_frameHeader smHeader;
2018
2019 CHECK_Z(ZSTD_compress_usingCDict(cctx, compressedBuffer, compressedBufferSize, CNBuffer, size, lgCDict));
2020 CHECK_Z(ZSTD_getFrameHeader(&lgHeader, compressedBuffer, compressedBufferSize));
2021 CHECK_Z(ZSTD_compress_usingCDict(cctx, compressedBuffer, compressedBufferSize, CNBuffer, size, smCDict));
2022 CHECK_Z(ZSTD_getFrameHeader(&smHeader, compressedBuffer, compressedBufferSize));
2023
2024 if (lgHeader.windowSize != smHeader.windowSize) goto _output_error;
2025
2026 ZSTD_freeCDict(smCDict);
2027 ZSTD_freeCDict(lgCDict);
2028 ZSTD_freeCCtx(cctx);
2029 }
2030 DISPLAYLEVEL(3, "OK \n");
2031
2032 DISPLAYLEVEL(3, "test%3i : testing FSE_normalizeCount() PR#1255: ", testNb++);
2033 {
2034 short norm[32];
2035 unsigned count[32];
2036 unsigned const tableLog = 5;
2037 size_t const nbSeq = 32;
2038 unsigned const maxSymbolValue = 31;
2039 size_t i;
2040
2041 for (i = 0; i < 32; ++i)
2042 count[i] = 1;
2043 /* Calling FSE_normalizeCount() on a uniform distribution should not
2044 * cause a division by zero.
2045 */
2046 FSE_normalizeCount(norm, tableLog, count, nbSeq, maxSymbolValue);
2047 }
2048 DISPLAYLEVEL(3, "OK \n");
2049
2050 _end:
2051 free(CNBuffer);
2052 free(compressedBuffer);
2053 free(decodedBuffer);
2054 return testResult;
2055
2056 _output_error:
2057 testResult = 1;
2058 DISPLAY("Error detected in Unit tests ! \n");
2059 goto _end;
2060 }
2061
2062
2063 static size_t findDiff(const void* buf1, const void* buf2, size_t max)
2064 {
2065 const BYTE* b1 = (const BYTE*)buf1;
2066 const BYTE* b2 = (const BYTE*)buf2;
2067 size_t u;
2068 for (u=0; u<max; u++) {
2069 if (b1[u] != b2[u]) break;
2070 }
2071 return u;
2072 }
2073
2074
2075 static ZSTD_parameters FUZ_makeParams(ZSTD_compressionParameters cParams, ZSTD_frameParameters fParams)
2076 {
2077 ZSTD_parameters params;
2078 params.cParams = cParams;
2079 params.fParams = fParams;
2080 return params;
2081 }
2082
2083 static size_t FUZ_rLogLength(U32* seed, U32 logLength)
2084 {
2085 size_t const lengthMask = ((size_t)1 << logLength) - 1;
2086 return (lengthMask+1) + (FUZ_rand(seed) & lengthMask);
2087 }
2088
2089 static size_t FUZ_randomLength(U32* seed, U32 maxLog)
2090 {
2091 U32 const logLength = FUZ_rand(seed) % maxLog;
2092 return FUZ_rLogLength(seed, logLength);
2093 }
2094
2095 #undef CHECK
2096 #define CHECK(cond, ...) { \
2097 if (cond) { \
2098 DISPLAY("Error => "); \
2099 DISPLAY(__VA_ARGS__); \
2100 DISPLAY(" (seed %u, test nb %u) \n", (unsigned)seed, testNb); \
2101 goto _output_error; \
2102 } }
2103
2104 #undef CHECK_Z
2105 #define CHECK_Z(f) { \
2106 size_t const err = f; \
2107 if (ZSTD_isError(err)) { \
2108 DISPLAY("Error => %s : %s ", \
2109 #f, ZSTD_getErrorName(err)); \
2110 DISPLAY(" (seed %u, test nb %u) \n", (unsigned)seed, testNb); \
2111 goto _output_error; \
2112 } }
2113
2114
2115 static int fuzzerTests(U32 seed, unsigned nbTests, unsigned startTest, U32 const maxDurationS, double compressibility, int bigTests)
2116 {
2117 static const U32 maxSrcLog = 23;
2118 static const U32 maxSampleLog = 22;
2119 size_t const srcBufferSize = (size_t)1<<maxSrcLog;
2120 size_t const dstBufferSize = (size_t)1<<maxSampleLog;
2121 size_t const cBufferSize = ZSTD_compressBound(dstBufferSize);
2122 BYTE* cNoiseBuffer[5];
2123 BYTE* const cBuffer = (BYTE*) malloc (cBufferSize);
2124 BYTE* const dstBuffer = (BYTE*) malloc (dstBufferSize);
2125 BYTE* const mirrorBuffer = (BYTE*) malloc (dstBufferSize);
2126 ZSTD_CCtx* const refCtx = ZSTD_createCCtx();
2127 ZSTD_CCtx* const ctx = ZSTD_createCCtx();
2128 ZSTD_DCtx* const dctx = ZSTD_createDCtx();
2129 U32 result = 0;
2130 unsigned testNb = 0;
2131 U32 coreSeed = seed;
2132 UTIL_time_t const startClock = UTIL_getTime();
2133 U64 const maxClockSpan = maxDurationS * SEC_TO_MICRO;
2134 int const cLevelLimiter = bigTests ? 3 : 2;
2135
2136 /* allocation */
2137 cNoiseBuffer[0] = (BYTE*)malloc (srcBufferSize);
2138 cNoiseBuffer[1] = (BYTE*)malloc (srcBufferSize);
2139 cNoiseBuffer[2] = (BYTE*)malloc (srcBufferSize);
2140 cNoiseBuffer[3] = (BYTE*)malloc (srcBufferSize);
2141 cNoiseBuffer[4] = (BYTE*)malloc (srcBufferSize);
2142 CHECK (!cNoiseBuffer[0] || !cNoiseBuffer[1] || !cNoiseBuffer[2] || !cNoiseBuffer[3] || !cNoiseBuffer[4]
2143 || !dstBuffer || !mirrorBuffer || !cBuffer || !refCtx || !ctx || !dctx,
2144 "Not enough memory, fuzzer tests cancelled");
2145
2146 /* Create initial samples */
2147 RDG_genBuffer(cNoiseBuffer[0], srcBufferSize, 0.00, 0., coreSeed); /* pure noise */
2148 RDG_genBuffer(cNoiseBuffer[1], srcBufferSize, 0.05, 0., coreSeed); /* barely compressible */
2149 RDG_genBuffer(cNoiseBuffer[2], srcBufferSize, compressibility, 0., coreSeed);
2150 RDG_genBuffer(cNoiseBuffer[3], srcBufferSize, 0.95, 0., coreSeed); /* highly compressible */
2151 RDG_genBuffer(cNoiseBuffer[4], srcBufferSize, 1.00, 0., coreSeed); /* sparse content */
2152
2153 /* catch up testNb */
2154 for (testNb=1; testNb < startTest; testNb++) FUZ_rand(&coreSeed);
2155
2156 /* main test loop */
2157 for ( ; (testNb <= nbTests) || (UTIL_clockSpanMicro(startClock) < maxClockSpan); testNb++ ) {
2158 BYTE* srcBuffer; /* jumping pointer */
2159 U32 lseed;
2160 size_t sampleSize, maxTestSize, totalTestSize;
2161 size_t cSize, totalCSize, totalGenSize;
2162 U64 crcOrig;
2163 BYTE* sampleBuffer;
2164 const BYTE* dict;
2165 size_t dictSize;
2166
2167 /* notification */
2168 if (nbTests >= testNb) { DISPLAYUPDATE(2, "\r%6u/%6u ", testNb, nbTests); }
2169 else { DISPLAYUPDATE(2, "\r%6u ", testNb); }
2170
2171 FUZ_rand(&coreSeed);
2172 { U32 const prime1 = 2654435761U; lseed = coreSeed ^ prime1; }
2173
2174 /* srcBuffer selection [0-4] */
2175 { U32 buffNb = FUZ_rand(&lseed) & 0x7F;
2176 if (buffNb & 7) buffNb=2; /* most common : compressible (P) */
2177 else {
2178 buffNb >>= 3;
2179 if (buffNb & 7) {
2180 const U32 tnb[2] = { 1, 3 }; /* barely/highly compressible */
2181 buffNb = tnb[buffNb >> 3];
2182 } else {
2183 const U32 tnb[2] = { 0, 4 }; /* not compressible / sparse */
2184 buffNb = tnb[buffNb >> 3];
2185 } }
2186 srcBuffer = cNoiseBuffer[buffNb];
2187 }
2188
2189 /* select src segment */
2190 sampleSize = FUZ_randomLength(&lseed, maxSampleLog);
2191
2192 /* create sample buffer (to catch read error with valgrind & sanitizers) */
2193 sampleBuffer = (BYTE*)malloc(sampleSize);
2194 CHECK(sampleBuffer==NULL, "not enough memory for sample buffer");
2195 { size_t const sampleStart = FUZ_rand(&lseed) % (srcBufferSize - sampleSize);
2196 memcpy(sampleBuffer, srcBuffer + sampleStart, sampleSize); }
2197 crcOrig = XXH64(sampleBuffer, sampleSize, 0);
2198
2199 /* compression tests */
2200 { int const cLevelPositive =
2201 ( FUZ_rand(&lseed) %
2202 (ZSTD_maxCLevel() - (FUZ_highbit32((U32)sampleSize) / cLevelLimiter)) )
2203 + 1;
2204 int const cLevel = ((FUZ_rand(&lseed) & 15) == 3) ?
2205 - (int)((FUZ_rand(&lseed) & 7) + 1) : /* test negative cLevel */
2206 cLevelPositive;
2207 DISPLAYLEVEL(5, "fuzzer t%u: Simple compression test (level %i) \n", testNb, cLevel);
2208 cSize = ZSTD_compressCCtx(ctx, cBuffer, cBufferSize, sampleBuffer, sampleSize, cLevel);
2209 CHECK(ZSTD_isError(cSize), "ZSTD_compressCCtx failed : %s", ZSTD_getErrorName(cSize));
2210
2211 /* compression failure test : too small dest buffer */
2212 assert(cSize > 3);
2213 { const size_t missing = (FUZ_rand(&lseed) % (cSize-2)) + 1;
2214 const size_t tooSmallSize = cSize - missing;
2215 const unsigned endMark = 0x4DC2B1A9;
2216 memcpy(dstBuffer+tooSmallSize, &endMark, sizeof(endMark));
2217 DISPLAYLEVEL(5, "fuzzer t%u: compress into too small buffer of size %u (missing %u bytes) \n",
2218 testNb, (unsigned)tooSmallSize, (unsigned)missing);
2219 { size_t const errorCode = ZSTD_compressCCtx(ctx, dstBuffer, tooSmallSize, sampleBuffer, sampleSize, cLevel);
2220 CHECK(!ZSTD_isError(errorCode), "ZSTD_compressCCtx should have failed ! (buffer too small : %u < %u)", (unsigned)tooSmallSize, (unsigned)cSize); }
2221 { unsigned endCheck; memcpy(&endCheck, dstBuffer+tooSmallSize, sizeof(endCheck));
2222 CHECK(endCheck != endMark, "ZSTD_compressCCtx : dst buffer overflow (check.%08X != %08X.mark)", endCheck, endMark); }
2223 } }
2224
2225 /* frame header decompression test */
2226 { ZSTD_frameHeader zfh;
2227 CHECK_Z( ZSTD_getFrameHeader(&zfh, cBuffer, cSize) );
2228 CHECK(zfh.frameContentSize != sampleSize, "Frame content size incorrect");
2229 }
2230
2231 /* Decompressed size test */
2232 { unsigned long long const rSize = ZSTD_findDecompressedSize(cBuffer, cSize);
2233 CHECK(rSize != sampleSize, "decompressed size incorrect");
2234 }
2235
2236 /* successful decompression test */
2237 DISPLAYLEVEL(5, "fuzzer t%u: simple decompression test \n", testNb);
2238 { size_t const margin = (FUZ_rand(&lseed) & 1) ? 0 : (FUZ_rand(&lseed) & 31) + 1;
2239 size_t const dSize = ZSTD_decompress(dstBuffer, sampleSize + margin, cBuffer, cSize);
2240 CHECK(dSize != sampleSize, "ZSTD_decompress failed (%s) (srcSize : %u ; cSize : %u)", ZSTD_getErrorName(dSize), (unsigned)sampleSize, (unsigned)cSize);
2241 { U64 const crcDest = XXH64(dstBuffer, sampleSize, 0);
2242 CHECK(crcOrig != crcDest, "decompression result corrupted (pos %u / %u)", (unsigned)findDiff(sampleBuffer, dstBuffer, sampleSize), (unsigned)sampleSize);
2243 } }
2244
2245 free(sampleBuffer); /* no longer useful after this point */
2246
2247 /* truncated src decompression test */
2248 DISPLAYLEVEL(5, "fuzzer t%u: decompression of truncated source \n", testNb);
2249 { size_t const missing = (FUZ_rand(&lseed) % (cSize-2)) + 1; /* no problem, as cSize > 4 (frameHeaderSizer) */
2250 size_t const tooSmallSize = cSize - missing;
2251 void* cBufferTooSmall = malloc(tooSmallSize); /* valgrind will catch read overflows */
2252 CHECK(cBufferTooSmall == NULL, "not enough memory !");
2253 memcpy(cBufferTooSmall, cBuffer, tooSmallSize);
2254 { size_t const errorCode = ZSTD_decompress(dstBuffer, dstBufferSize, cBufferTooSmall, tooSmallSize);
2255 CHECK(!ZSTD_isError(errorCode), "ZSTD_decompress should have failed ! (truncated src buffer)"); }
2256 free(cBufferTooSmall);
2257 }
2258
2259 /* too small dst decompression test */
2260 DISPLAYLEVEL(5, "fuzzer t%u: decompress into too small dst buffer \n", testNb);
2261 if (sampleSize > 3) {
2262 size_t const missing = (FUZ_rand(&lseed) % (sampleSize-2)) + 1; /* no problem, as cSize > 4 (frameHeaderSizer) */
2263 size_t const tooSmallSize = sampleSize - missing;
2264 static const BYTE token = 0xA9;
2265 dstBuffer[tooSmallSize] = token;
2266 { size_t const errorCode = ZSTD_decompress(dstBuffer, tooSmallSize, cBuffer, cSize);
2267 CHECK(!ZSTD_isError(errorCode), "ZSTD_decompress should have failed : %u > %u (dst buffer too small)", (unsigned)errorCode, (unsigned)tooSmallSize); }
2268 CHECK(dstBuffer[tooSmallSize] != token, "ZSTD_decompress : dst buffer overflow");
2269 }
2270
2271 /* noisy src decompression test */
2272 if (cSize > 6) {
2273 /* insert noise into src */
2274 { U32 const maxNbBits = FUZ_highbit32((U32)(cSize-4));
2275 size_t pos = 4; /* preserve magic number (too easy to detect) */
2276 for (;;) {
2277 /* keep some original src */
2278 { U32 const nbBits = FUZ_rand(&lseed) % maxNbBits;
2279 size_t const mask = (1<<nbBits) - 1;
2280 size_t const skipLength = FUZ_rand(&lseed) & mask;
2281 pos += skipLength;
2282 }
2283 if (pos >= cSize) break;
2284 /* add noise */
2285 { U32 const nbBitsCodes = FUZ_rand(&lseed) % maxNbBits;
2286 U32 const nbBits = nbBitsCodes ? nbBitsCodes-1 : 0;
2287 size_t const mask = (1<<nbBits) - 1;
2288 size_t const rNoiseLength = (FUZ_rand(&lseed) & mask) + 1;
2289 size_t const noiseLength = MIN(rNoiseLength, cSize-pos);
2290 size_t const noiseStart = FUZ_rand(&lseed) % (srcBufferSize - noiseLength);
2291 memcpy(cBuffer + pos, srcBuffer + noiseStart, noiseLength);
2292 pos += noiseLength;
2293 } } }
2294
2295 /* decompress noisy source */
2296 DISPLAYLEVEL(5, "fuzzer t%u: decompress noisy source \n", testNb);
2297 { U32 const endMark = 0xA9B1C3D6;
2298 memcpy(dstBuffer+sampleSize, &endMark, 4);
2299 { size_t const decompressResult = ZSTD_decompress(dstBuffer, sampleSize, cBuffer, cSize);
2300 /* result *may* be an unlikely success, but even then, it must strictly respect dst buffer boundaries */
2301 CHECK((!ZSTD_isError(decompressResult)) && (decompressResult>sampleSize),
2302 "ZSTD_decompress on noisy src : result is too large : %u > %u (dst buffer)", (unsigned)decompressResult, (unsigned)sampleSize);
2303 }
2304 { U32 endCheck; memcpy(&endCheck, dstBuffer+sampleSize, 4);
2305 CHECK(endMark!=endCheck, "ZSTD_decompress on noisy src : dst buffer overflow");
2306 } } } /* noisy src decompression test */
2307
2308 /*===== Bufferless streaming compression test, scattered segments and dictionary =====*/
2309 DISPLAYLEVEL(5, "fuzzer t%u: Bufferless streaming compression test \n", testNb);
2310 { U32 const testLog = FUZ_rand(&lseed) % maxSrcLog;
2311 U32 const dictLog = FUZ_rand(&lseed) % maxSrcLog;
2312 int const cLevel = (FUZ_rand(&lseed) %
2313 (ZSTD_maxCLevel() -
2314 (MAX(testLog, dictLog) / cLevelLimiter))) +
2315 1;
2316 maxTestSize = FUZ_rLogLength(&lseed, testLog);
2317 if (maxTestSize >= dstBufferSize) maxTestSize = dstBufferSize-1;
2318
2319 dictSize = FUZ_rLogLength(&lseed, dictLog); /* needed also for decompression */
2320 dict = srcBuffer + (FUZ_rand(&lseed) % (srcBufferSize - dictSize));
2321
2322 DISPLAYLEVEL(6, "fuzzer t%u: Compressing up to <=%u bytes at level %i with dictionary size %u \n",
2323 testNb, (unsigned)maxTestSize, cLevel, (unsigned)dictSize);
2324
2325 if (FUZ_rand(&lseed) & 0xF) {
2326 CHECK_Z ( ZSTD_compressBegin_usingDict(refCtx, dict, dictSize, cLevel) );
2327 } else {
2328 ZSTD_compressionParameters const cPar = ZSTD_getCParams(cLevel, ZSTD_CONTENTSIZE_UNKNOWN, dictSize);
2329 ZSTD_frameParameters const fPar = { FUZ_rand(&lseed)&1 /* contentSizeFlag */,
2330 !(FUZ_rand(&lseed)&3) /* contentChecksumFlag*/,
2331 0 /*NodictID*/ }; /* note : since dictionary is fake, dictIDflag has no impact */
2332 ZSTD_parameters const p = FUZ_makeParams(cPar, fPar);
2333 CHECK_Z ( ZSTD_compressBegin_advanced(refCtx, dict, dictSize, p, 0) );
2334 }
2335 CHECK_Z( ZSTD_copyCCtx(ctx, refCtx, 0) );
2336 }
2337
2338 { U32 const nbChunks = (FUZ_rand(&lseed) & 127) + 2;
2339 U32 n;
2340 XXH64_state_t xxhState;
2341 XXH64_reset(&xxhState, 0);
2342 for (totalTestSize=0, cSize=0, n=0 ; n<nbChunks ; n++) {
2343 size_t const segmentSize = FUZ_randomLength(&lseed, maxSampleLog);
2344 size_t const segmentStart = FUZ_rand(&lseed) % (srcBufferSize - segmentSize);
2345
2346 if (cBufferSize-cSize < ZSTD_compressBound(segmentSize)) break; /* avoid invalid dstBufferTooSmall */
2347 if (totalTestSize+segmentSize > maxTestSize) break;
2348
2349 { size_t const compressResult = ZSTD_compressContinue(ctx, cBuffer+cSize, cBufferSize-cSize, srcBuffer+segmentStart, segmentSize);
2350 CHECK (ZSTD_isError(compressResult), "multi-segments compression error : %s", ZSTD_getErrorName(compressResult));
2351 cSize += compressResult;
2352 }
2353 XXH64_update(&xxhState, srcBuffer+segmentStart, segmentSize);
2354 memcpy(mirrorBuffer + totalTestSize, srcBuffer+segmentStart, segmentSize);
2355 totalTestSize += segmentSize;
2356 }
2357
2358 { size_t const flushResult = ZSTD_compressEnd(ctx, cBuffer+cSize, cBufferSize-cSize, NULL, 0);
2359 CHECK (ZSTD_isError(flushResult), "multi-segments epilogue error : %s", ZSTD_getErrorName(flushResult));
2360 cSize += flushResult;
2361 }
2362 crcOrig = XXH64_digest(&xxhState);
2363 }
2364
2365 /* streaming decompression test */
2366 DISPLAYLEVEL(5, "fuzzer t%u: Bufferless streaming decompression test \n", testNb);
2367 /* ensure memory requirement is good enough (should always be true) */
2368 { ZSTD_frameHeader zfh;
2369 CHECK( ZSTD_getFrameHeader(&zfh, cBuffer, ZSTD_FRAMEHEADERSIZE_MAX),
2370 "ZSTD_getFrameHeader(): error retrieving frame information");
2371 { size_t const roundBuffSize = ZSTD_decodingBufferSize_min(zfh.windowSize, zfh.frameContentSize);
2372 CHECK_Z(roundBuffSize);
2373 CHECK((roundBuffSize > totalTestSize) && (zfh.frameContentSize!=ZSTD_CONTENTSIZE_UNKNOWN),
2374 "ZSTD_decodingBufferSize_min() requires more memory (%u) than necessary (%u)",
2375 (unsigned)roundBuffSize, (unsigned)totalTestSize );
2376 } }
2377 if (dictSize<8) dictSize=0, dict=NULL; /* disable dictionary */
2378 CHECK_Z( ZSTD_decompressBegin_usingDict(dctx, dict, dictSize) );
2379 totalCSize = 0;
2380 totalGenSize = 0;
2381 while (totalCSize < cSize) {
2382 size_t const inSize = ZSTD_nextSrcSizeToDecompress(dctx);
2383 size_t const genSize = ZSTD_decompressContinue(dctx, dstBuffer+totalGenSize, dstBufferSize-totalGenSize, cBuffer+totalCSize, inSize);
2384 CHECK (ZSTD_isError(genSize), "ZSTD_decompressContinue error : %s", ZSTD_getErrorName(genSize));
2385 totalGenSize += genSize;
2386 totalCSize += inSize;
2387 }
2388 CHECK (ZSTD_nextSrcSizeToDecompress(dctx) != 0, "frame not fully decoded");
2389 CHECK (totalGenSize != totalTestSize, "streaming decompressed data : wrong size")
2390 CHECK (totalCSize != cSize, "compressed data should be fully read")
2391 { U64 const crcDest = XXH64(dstBuffer, totalTestSize, 0);
2392 CHECK(crcOrig != crcDest, "streaming decompressed data corrupted (pos %u / %u)",
2393 (unsigned)findDiff(mirrorBuffer, dstBuffer, totalTestSize), (unsigned)totalTestSize);
2394 }
2395 } /* for ( ; (testNb <= nbTests) */
2396 DISPLAY("\r%u fuzzer tests completed \n", testNb-1);
2397
2398 _cleanup:
2399 ZSTD_freeCCtx(refCtx);
2400 ZSTD_freeCCtx(ctx);
2401 ZSTD_freeDCtx(dctx);
2402 free(cNoiseBuffer[0]);
2403 free(cNoiseBuffer[1]);
2404 free(cNoiseBuffer[2]);
2405 free(cNoiseBuffer[3]);
2406 free(cNoiseBuffer[4]);
2407 free(cBuffer);
2408 free(dstBuffer);
2409 free(mirrorBuffer);
2410 return result;
2411
2412 _output_error:
2413 result = 1;
2414 goto _cleanup;
2415 }
2416
2417
2418 /*_*******************************************************
2419 * Command line
2420 *********************************************************/
2421 static int FUZ_usage(const char* programName)
2422 {
2423 DISPLAY( "Usage :\n");
2424 DISPLAY( " %s [args]\n", programName);
2425 DISPLAY( "\n");
2426 DISPLAY( "Arguments :\n");
2427 DISPLAY( " -i# : Nb of tests (default:%i) \n", nbTestsDefault);
2428 DISPLAY( " -s# : Select seed (default:prompt user)\n");
2429 DISPLAY( " -t# : Select starting test number (default:0)\n");
2430 DISPLAY( " -P# : Select compressibility in %% (default:%i%%)\n", FUZ_compressibility_default);
2431 DISPLAY( " -v : verbose\n");
2432 DISPLAY( " -p : pause at the end\n");
2433 DISPLAY( " -h : display help and exit\n");
2434 return 0;
2435 }
2436
2437 /*! readU32FromChar() :
2438 @return : unsigned integer value read from input in `char` format
2439 allows and interprets K, KB, KiB, M, MB and MiB suffix.
2440 Will also modify `*stringPtr`, advancing it to position where it stopped reading.
2441 Note : function result can overflow if digit string > MAX_UINT */
2442 static unsigned readU32FromChar(const char** stringPtr)
2443 {
2444 unsigned result = 0;
2445 while ((**stringPtr >='0') && (**stringPtr <='9'))
2446 result *= 10, result += **stringPtr - '0', (*stringPtr)++ ;
2447 if ((**stringPtr=='K') || (**stringPtr=='M')) {
2448 result <<= 10;
2449 if (**stringPtr=='M') result <<= 10;
2450 (*stringPtr)++ ;
2451 if (**stringPtr=='i') (*stringPtr)++;
2452 if (**stringPtr=='B') (*stringPtr)++;
2453 }
2454 return result;
2455 }
2456
2457 /** longCommandWArg() :
2458 * check if *stringPtr is the same as longCommand.
2459 * If yes, @return 1 and advances *stringPtr to the position which immediately follows longCommand.
2460 * @return 0 and doesn't modify *stringPtr otherwise.
2461 */
2462 static unsigned longCommandWArg(const char** stringPtr, const char* longCommand)
2463 {
2464 size_t const comSize = strlen(longCommand);
2465 int const result = !strncmp(*stringPtr, longCommand, comSize);
2466 if (result) *stringPtr += comSize;
2467 return result;
2468 }
2469
2470 int main(int argc, const char** argv)
2471 {
2472 U32 seed = 0;
2473 int seedset = 0;
2474 int argNb;
2475 int nbTests = nbTestsDefault;
2476 int testNb = 0;
2477 int proba = FUZ_compressibility_default;
2478 int result = 0;
2479 U32 mainPause = 0;
2480 U32 maxDuration = 0;
2481 int bigTests = 1;
2482 U32 memTestsOnly = 0;
2483 const char* const programName = argv[0];
2484
2485 /* Check command line */
2486 for (argNb=1; argNb<argc; argNb++) {
2487 const char* argument = argv[argNb];
2488 if(!argument) continue; /* Protection if argument empty */
2489
2490 /* Handle commands. Aggregated commands are allowed */
2491 if (argument[0]=='-') {
2492
2493 if (longCommandWArg(&argument, "--memtest=")) { memTestsOnly = readU32FromChar(&argument); continue; }
2494
2495 if (!strcmp(argument, "--memtest")) { memTestsOnly=1; continue; }
2496 if (!strcmp(argument, "--no-big-tests")) { bigTests=0; continue; }
2497
2498 argument++;
2499 while (*argument!=0) {
2500 switch(*argument)
2501 {
2502 case 'h':
2503 return FUZ_usage(programName);
2504
2505 case 'v':
2506 argument++;
2507 g_displayLevel++;
2508 break;
2509
2510 case 'q':
2511 argument++;
2512 g_displayLevel--;
2513 break;
2514
2515 case 'p': /* pause at the end */
2516 argument++;
2517 mainPause = 1;
2518 break;
2519
2520 case 'i':
2521 argument++; maxDuration = 0;
2522 nbTests = readU32FromChar(&argument);
2523 break;
2524
2525 case 'T':
2526 argument++;
2527 nbTests = 0;
2528 maxDuration = readU32FromChar(&argument);
2529 if (*argument=='s') argument++; /* seconds */
2530 if (*argument=='m') maxDuration *= 60, argument++; /* minutes */
2531 if (*argument=='n') argument++;
2532 break;
2533
2534 case 's':
2535 argument++;
2536 seedset = 1;
2537 seed = readU32FromChar(&argument);
2538 break;
2539
2540 case 't':
2541 argument++;
2542 testNb = readU32FromChar(&argument);
2543 break;
2544
2545 case 'P': /* compressibility % */
2546 argument++;
2547 proba = readU32FromChar(&argument);
2548 if (proba>100) proba = 100;
2549 break;
2550
2551 default:
2552 return (FUZ_usage(programName), 1);
2553 } } } } /* for (argNb=1; argNb<argc; argNb++) */
2554
2555 /* Get Seed */
2556 DISPLAY("Starting zstd tester (%i-bits, %s)\n", (int)(sizeof(size_t)*8), ZSTD_VERSION_STRING);
2557
2558 if (!seedset) {
2559 time_t const t = time(NULL);
2560 U32 const h = XXH32(&t, sizeof(t), 1);
2561 seed = h % 10000;
2562 }
2563
2564 DISPLAY("Seed = %u\n", (unsigned)seed);
2565 if (proba!=FUZ_compressibility_default) DISPLAY("Compressibility : %i%%\n", proba);
2566
2567 if (memTestsOnly) {
2568 g_displayLevel = MAX(3, g_displayLevel);
2569 return FUZ_mallocTests(seed, ((double)proba) / 100, memTestsOnly);
2570 }
2571
2572 if (nbTests < testNb) nbTests = testNb;
2573
2574 if (testNb==0)
2575 result = basicUnitTests(0, ((double)proba) / 100); /* constant seed for predictability */
2576 if (!result)
2577 result = fuzzerTests(seed, nbTests, testNb, maxDuration, ((double)proba) / 100, bigTests);
2578 if (mainPause) {
2579 int unused;
2580 DISPLAY("Press Enter \n");
2581 unused = getchar();
2582 (void)unused;
2583 }
2584 return result;
2585 }
Ceph