xref: /freebsd/sys/contrib/zstd/zlibWrapper/examples/zwrapbench.c (revision 0fca6ea1d4eea4c934cfff25ac9ee8ad6fe95583)
1 /*
2  * Copyright (c) 2016-present, Przemyslaw Skibinski, 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  */
9 
10 
11 /* *************************************
12 *  Includes
13 ***************************************/
14 #include "util.h"        /* Compiler options, UTIL_GetFileSize, UTIL_sleep */
15 #include <stdlib.h>      /* malloc, free */
16 #include <string.h>      /* memset */
17 #include <stdio.h>       /* fprintf, fopen, ftello64 */
18 #include <time.h>        /* clock_t, clock, CLOCKS_PER_SEC */
19 #include <ctype.h>       /* toupper */
20 #include <errno.h>       /* errno */
21 
22 #include "timefn.h"      /* UTIL_time_t, UTIL_getTime, UTIL_clockSpanMicro, UTIL_waitForNextTick */
23 #include "mem.h"
24 #define ZSTD_STATIC_LINKING_ONLY
25 #include "zstd.h"
26 #include "datagen.h"     /* RDG_genBuffer */
27 #include "xxhash.h"
28 
29 #include "zstd_zlibwrapper.h"
30 
31 
32 
33 /*-************************************
34 *  Tuning parameters
35 **************************************/
36 #ifndef ZSTDCLI_CLEVEL_DEFAULT
37 #  define ZSTDCLI_CLEVEL_DEFAULT 3
38 #endif
39 
40 
41 /*-************************************
42 *  Constants
43 **************************************/
44 #define COMPRESSOR_NAME "Zstandard wrapper for zlib command line interface"
45 #ifndef ZSTD_VERSION
46 #  define ZSTD_VERSION "v" ZSTD_VERSION_STRING
47 #endif
48 #define AUTHOR "Yann Collet"
49 #define WELCOME_MESSAGE "*** %s %i-bits %s, by %s ***\n", COMPRESSOR_NAME, (int)(sizeof(size_t)*8), ZSTD_VERSION, AUTHOR
50 
51 #ifndef ZSTD_GIT_COMMIT
52 #  define ZSTD_GIT_COMMIT_STRING ""
53 #else
54 #  define ZSTD_GIT_COMMIT_STRING ZSTD_EXPAND_AND_QUOTE(ZSTD_GIT_COMMIT)
55 #endif
56 
57 #define NBLOOPS               3
58 #define TIMELOOP_MICROSEC     1*1000000ULL /* 1 second */
59 #define ACTIVEPERIOD_MICROSEC 70*1000000ULL /* 70 seconds */
60 #define COOLPERIOD_SEC        10
61 
62 #define KB *(1 <<10)
63 #define MB *(1 <<20)
64 #define GB *(1U<<30)
65 
66 static const size_t maxMemory = (sizeof(size_t)==4)  ?  (2 GB - 64 MB) : (size_t)(1ULL << ((sizeof(size_t)*8)-31));
67 
68 static U32 g_compressibilityDefault = 50;
69 
70 
71 /* *************************************
72 *  console display
73 ***************************************/
74 #define DEFAULT_DISPLAY_LEVEL 2
75 #define DISPLAY(...)         fprintf(displayOut, __VA_ARGS__)
76 #define DISPLAYLEVEL(l, ...) if (g_displayLevel>=l) { DISPLAY(__VA_ARGS__); }
77 static unsigned g_displayLevel = DEFAULT_DISPLAY_LEVEL;   /* 0 : no display;   1: errors;   2 : + result + interaction + warnings;   3 : + progression;   4 : + information */
78 static FILE* displayOut;
79 
80 #define DISPLAYUPDATE(l, ...) if (g_displayLevel>=l) { \
81             if ((clock() - g_time > refreshRate) || (g_displayLevel>=4)) \
82             { g_time = clock(); DISPLAY(__VA_ARGS__); \
83             if (g_displayLevel>=4) fflush(displayOut); } }
84 static const clock_t refreshRate = CLOCKS_PER_SEC * 15 / 100;
85 static clock_t g_time = 0;
86 
87 
88 /* *************************************
89 *  Exceptions
90 ***************************************/
91 #ifndef DEBUG
92 #  define DEBUG 0
93 #endif
94 #define DEBUGOUTPUT(...) { if (DEBUG) DISPLAY(__VA_ARGS__); }
95 #define EXM_THROW(error, ...)                                             \
96 {                                                                         \
97     DEBUGOUTPUT("Error defined at %s, line %i : \n", __FILE__, __LINE__); \
98     DISPLAYLEVEL(1, "Error %i : ", error);                                \
99     DISPLAYLEVEL(1, __VA_ARGS__);                                         \
100     DISPLAYLEVEL(1, "\n");                                                \
101     exit(error);                                                          \
102 }
103 
104 
105 /* *************************************
106 *  Benchmark Parameters
107 ***************************************/
108 static unsigned g_nbIterations = NBLOOPS;
109 static size_t g_blockSize = 0;
110 int g_additionalParam = 0;
111 
112 void BMK_setNotificationLevel(unsigned level) { g_displayLevel=level; }
113 
114 void BMK_setAdditionalParam(int additionalParam) { g_additionalParam=additionalParam; }
115 
116 void BMK_SetNbIterations(unsigned nbLoops)
117 {
118     g_nbIterations = nbLoops;
119     DISPLAYLEVEL(3, "- test >= %u seconds per compression / decompression -\n", g_nbIterations);
120 }
121 
122 void BMK_SetBlockSize(size_t blockSize)
123 {
124     g_blockSize = blockSize;
125     DISPLAYLEVEL(2, "using blocks of size %u KB \n", (unsigned)(blockSize>>10));
126 }
127 
128 
129 /* ********************************************************
130 *  Bench functions
131 **********************************************************/
132 #undef MIN
133 #undef MAX
134 #define MIN(a,b) ((a)<(b) ? (a) : (b))
135 #define MAX(a,b) ((a)>(b) ? (a) : (b))
136 
137 typedef struct
138 {
139     z_const char* srcPtr;
140     size_t srcSize;
141     char*  cPtr;
142     size_t cRoom;
143     size_t cSize;
144     char*  resPtr;
145     size_t resSize;
146 } blockParam_t;
147 
148 typedef enum { BMK_ZSTD, BMK_ZSTD_STREAM, BMK_ZLIB, BMK_ZWRAP_ZLIB, BMK_ZWRAP_ZSTD, BMK_ZLIB_REUSE, BMK_ZWRAP_ZLIB_REUSE, BMK_ZWRAP_ZSTD_REUSE } BMK_compressor;
149 
150 
151 static int BMK_benchMem(z_const void* srcBuffer, size_t srcSize,
152                         const char* displayName, int cLevel,
153                         const size_t* fileSizes, U32 nbFiles,
154                         const void* dictBuffer, size_t dictBufferSize, BMK_compressor compressor)
155 {
156     size_t const blockSize = (g_blockSize>=32 ? g_blockSize : srcSize) + (!srcSize) /* avoid div by 0 */ ;
157     size_t const avgSize = MIN(g_blockSize, (srcSize / nbFiles));
158     U32 const maxNbBlocks = (U32) ((srcSize + (blockSize-1)) / blockSize) + nbFiles;
159     blockParam_t* const blockTable = (blockParam_t*) malloc(maxNbBlocks * sizeof(blockParam_t));
160     size_t const maxCompressedSize = ZSTD_compressBound(srcSize) + (maxNbBlocks * 1024);   /* add some room for safety */
161     void* const compressedBuffer = malloc(maxCompressedSize);
162     void* const resultBuffer = malloc(srcSize);
163     ZSTD_CCtx* const ctx = ZSTD_createCCtx();
164     ZSTD_DCtx* const dctx = ZSTD_createDCtx();
165     U32 nbBlocks;
166 
167     /* checks */
168     if (!compressedBuffer || !resultBuffer || !blockTable || !ctx || !dctx)
169         EXM_THROW(31, "allocation error : not enough memory");
170 
171     /* init */
172     if (strlen(displayName)>17) displayName += strlen(displayName)-17;   /* can only display 17 characters */
173 
174     /* Init blockTable data */
175     {   z_const char* srcPtr = (z_const char*)srcBuffer;
176         char* cPtr = (char*)compressedBuffer;
177         char* resPtr = (char*)resultBuffer;
178         U32 fileNb;
179         for (nbBlocks=0, fileNb=0; fileNb<nbFiles; fileNb++) {
180             size_t remaining = fileSizes[fileNb];
181             U32 const nbBlocksforThisFile = (U32)((remaining + (blockSize-1)) / blockSize);
182             U32 const blockEnd = nbBlocks + nbBlocksforThisFile;
183             for ( ; nbBlocks<blockEnd; nbBlocks++) {
184                 size_t const thisBlockSize = MIN(remaining, blockSize);
185                 blockTable[nbBlocks].srcPtr = srcPtr;
186                 blockTable[nbBlocks].cPtr = cPtr;
187                 blockTable[nbBlocks].resPtr = resPtr;
188                 blockTable[nbBlocks].srcSize = thisBlockSize;
189                 blockTable[nbBlocks].cRoom = ZSTD_compressBound(thisBlockSize);
190                 srcPtr += thisBlockSize;
191                 cPtr += blockTable[nbBlocks].cRoom;
192                 resPtr += thisBlockSize;
193                 remaining -= thisBlockSize;
194     }   }   }
195 
196     /* warming up memory */
197     RDG_genBuffer(compressedBuffer, maxCompressedSize, 0.10, 0.50, 1);
198 
199     /* Bench */
200     {   U64 fastestC = (U64)(-1LL), fastestD = (U64)(-1LL);
201         U64 const crcOrig = XXH64(srcBuffer, srcSize, 0);
202         UTIL_time_t coolTime;
203         U64 const maxTime = (g_nbIterations * TIMELOOP_MICROSEC) + 100;
204         U64 totalCTime=0, totalDTime=0;
205         U32 cCompleted=0, dCompleted=0;
206 #       define NB_MARKS 4
207         const char* const marks[NB_MARKS] = { " |", " /", " =",  "\\" };
208         U32 markNb = 0;
209         size_t cSize = 0;
210         double ratio = 0.;
211 
212         coolTime = UTIL_getTime();
213         DISPLAYLEVEL(2, "\r%79s\r", "");
214         while (!cCompleted | !dCompleted) {
215             UTIL_time_t clockStart;
216             U64 clockLoop = g_nbIterations ? TIMELOOP_MICROSEC : 1;
217 
218             /* overheat protection */
219             if (UTIL_clockSpanMicro(coolTime) > ACTIVEPERIOD_MICROSEC) {
220                 DISPLAYLEVEL(2, "\rcooling down ...    \r");
221                 UTIL_sleep(COOLPERIOD_SEC);
222                 coolTime = UTIL_getTime();
223             }
224 
225             /* Compression */
226             DISPLAYLEVEL(2, "%2s-%-17.17s :%10u ->\r", marks[markNb], displayName, (unsigned)srcSize);
227             if (!cCompleted) memset(compressedBuffer, 0xE5, maxCompressedSize);  /* warm up and erase result buffer */
228 
229             UTIL_sleepMilli(1);  /* give processor time to other processes */
230             UTIL_waitForNextTick();
231             clockStart = UTIL_getTime();
232 
233             if (!cCompleted) {   /* still some time to do compression tests */
234                 U32 nbLoops = 0;
235                 if (compressor == BMK_ZSTD) {
236                     ZSTD_parameters const zparams = ZSTD_getParams(cLevel, avgSize, dictBufferSize);
237                     ZSTD_customMem const cmem = { NULL, NULL, NULL };
238                     ZSTD_CDict* const cdict = ZSTD_createCDict_advanced(dictBuffer, dictBufferSize, ZSTD_dlm_byRef, ZSTD_dct_auto, zparams.cParams, cmem);
239                     if (cdict==NULL) EXM_THROW(1, "ZSTD_createCDict_advanced() allocation failure");
240 
241                     do {
242                         U32 blockNb;
243                         size_t rSize;
244                         for (blockNb=0; blockNb<nbBlocks; blockNb++) {
245                             if (dictBufferSize) {
246                                 rSize = ZSTD_compress_usingCDict(ctx,
247                                                 blockTable[blockNb].cPtr,  blockTable[blockNb].cRoom,
248                                                 blockTable[blockNb].srcPtr,blockTable[blockNb].srcSize,
249                                                 cdict);
250                             } else {
251                                 rSize = ZSTD_compressCCtx (ctx,
252                                                 blockTable[blockNb].cPtr,  blockTable[blockNb].cRoom,
253                                                 blockTable[blockNb].srcPtr,blockTable[blockNb].srcSize, cLevel);
254                             }
255                             if (ZSTD_isError(rSize)) EXM_THROW(1, "ZSTD_compress_usingCDict() failed : %s", ZSTD_getErrorName(rSize));
256                             blockTable[blockNb].cSize = rSize;
257                         }
258                         nbLoops++;
259                     } while (UTIL_clockSpanMicro(clockStart) < clockLoop);
260                     ZSTD_freeCDict(cdict);
261                 } else if (compressor == BMK_ZSTD_STREAM) {
262                     ZSTD_parameters const zparams = ZSTD_getParams(cLevel, avgSize, dictBufferSize);
263                     ZSTD_inBuffer inBuffer;
264                     ZSTD_outBuffer outBuffer;
265                     ZSTD_CStream* zbc = ZSTD_createCStream();
266                     size_t rSize;
267                     ZSTD_CCtx_params* cctxParams = ZSTD_createCCtxParams();
268 
269                     if (!cctxParams) EXM_THROW(1, "ZSTD_createCCtxParams() allocation failure");
270                     if (zbc == NULL) EXM_THROW(1, "ZSTD_createCStream() allocation failure");
271 
272                     {   int initErr = 0;
273                         initErr |= ZSTD_isError(ZSTD_CCtx_reset(zbc, ZSTD_reset_session_only));
274                         initErr |= ZSTD_isError(ZSTD_CCtxParams_init_advanced(cctxParams, zparams));
275                         initErr |= ZSTD_isError(ZSTD_CCtx_setParametersUsingCCtxParams(zbc, cctxParams));
276                         initErr |= ZSTD_isError(ZSTD_CCtx_setPledgedSrcSize(zbc, avgSize));
277                         initErr |= ZSTD_isError(ZSTD_CCtx_loadDictionary(zbc, dictBuffer, dictBufferSize));
278 
279                         ZSTD_freeCCtxParams(cctxParams);
280                         if (initErr) EXM_THROW(1, "CCtx init failed!");
281                     }
282 
283                     do {
284                         U32 blockNb;
285                         for (blockNb=0; blockNb<nbBlocks; blockNb++) {
286                             rSize = ZSTD_CCtx_reset(zbc, ZSTD_reset_session_only);
287                             if (ZSTD_isError(rSize)) EXM_THROW(1, "ZSTD_CCtx_reset() failed : %s", ZSTD_getErrorName(rSize));
288                             rSize = ZSTD_CCtx_setPledgedSrcSize(zbc, blockTable[blockNb].srcSize);
289                             if (ZSTD_isError(rSize)) EXM_THROW(1, "ZSTD_CCtx_setPledgedSrcSize() failed : %s", ZSTD_getErrorName(rSize));
290                             inBuffer.src = blockTable[blockNb].srcPtr;
291                             inBuffer.size = blockTable[blockNb].srcSize;
292                             inBuffer.pos = 0;
293                             outBuffer.dst = blockTable[blockNb].cPtr;
294                             outBuffer.size = blockTable[blockNb].cRoom;
295                             outBuffer.pos = 0;
296                             rSize = ZSTD_compressStream(zbc, &outBuffer, &inBuffer);
297                             if (ZSTD_isError(rSize)) EXM_THROW(1, "ZSTD_compressStream() failed : %s", ZSTD_getErrorName(rSize));
298                             rSize = ZSTD_endStream(zbc, &outBuffer);
299                             if (ZSTD_isError(rSize)) EXM_THROW(1, "ZSTD_endStream() failed : %s", ZSTD_getErrorName(rSize));
300                             blockTable[blockNb].cSize = outBuffer.pos;
301                         }
302                         nbLoops++;
303                     } while (UTIL_clockSpanMicro(clockStart) < clockLoop);
304                     ZSTD_freeCStream(zbc);
305                 } else if (compressor == BMK_ZWRAP_ZLIB_REUSE || compressor == BMK_ZWRAP_ZSTD_REUSE || compressor == BMK_ZLIB_REUSE) {
306                     z_stream def;
307                     int ret;
308                     int useSetDict = (dictBuffer != NULL);
309                     if (compressor == BMK_ZLIB_REUSE || compressor == BMK_ZWRAP_ZLIB_REUSE) ZWRAP_useZSTDcompression(0);
310                     else ZWRAP_useZSTDcompression(1);
311                     def.zalloc = Z_NULL;
312                     def.zfree = Z_NULL;
313                     def.opaque = Z_NULL;
314                     ret = deflateInit(&def, cLevel);
315                     if (ret != Z_OK) EXM_THROW(1, "deflateInit failure");
316                  /*   if (ZWRAP_isUsingZSTDcompression()) {
317                         ret = ZWRAP_setPledgedSrcSize(&def, avgSize);
318                         if (ret != Z_OK) EXM_THROW(1, "ZWRAP_setPledgedSrcSize failure");
319                     } */
320                     do {
321                         U32 blockNb;
322                         for (blockNb=0; blockNb<nbBlocks; blockNb++) {
323                             if (ZWRAP_isUsingZSTDcompression())
324                                 ret = ZWRAP_deflateReset_keepDict(&def); /* reuse dictionary to make compression faster */
325                             else
326                                 ret = deflateReset(&def);
327                             if (ret != Z_OK) EXM_THROW(1, "deflateReset failure");
328                             if (useSetDict) {
329                                 ret = deflateSetDictionary(&def, (const z_Bytef*)dictBuffer, dictBufferSize);
330                                 if (ret != Z_OK) EXM_THROW(1, "deflateSetDictionary failure");
331                                 if (ZWRAP_isUsingZSTDcompression()) useSetDict = 0; /* zstd doesn't require deflateSetDictionary after ZWRAP_deflateReset_keepDict */
332                             }
333                             def.next_in = (z_const z_Bytef*) blockTable[blockNb].srcPtr;
334                             def.avail_in = (uInt)blockTable[blockNb].srcSize;
335                             def.total_in = 0;
336                             def.next_out = (z_Bytef*) blockTable[blockNb].cPtr;
337                             def.avail_out = (uInt)blockTable[blockNb].cRoom;
338                             def.total_out = 0;
339                             ret = deflate(&def, Z_FINISH);
340                             if (ret != Z_STREAM_END) EXM_THROW(1, "deflate failure ret=%d srcSize=%d" , ret, (int)blockTable[blockNb].srcSize);
341                             blockTable[blockNb].cSize = def.total_out;
342                         }
343                         nbLoops++;
344                     } while (UTIL_clockSpanMicro(clockStart) < clockLoop);
345                     ret = deflateEnd(&def);
346                     if (ret != Z_OK) EXM_THROW(1, "deflateEnd failure");
347                 } else {
348                     z_stream def;
349                     if (compressor == BMK_ZLIB || compressor == BMK_ZWRAP_ZLIB) ZWRAP_useZSTDcompression(0);
350                     else ZWRAP_useZSTDcompression(1);
351                     do {
352                         U32 blockNb;
353                         for (blockNb=0; blockNb<nbBlocks; blockNb++) {
354                             int ret;
355                             def.zalloc = Z_NULL;
356                             def.zfree = Z_NULL;
357                             def.opaque = Z_NULL;
358                             ret = deflateInit(&def, cLevel);
359                             if (ret != Z_OK) EXM_THROW(1, "deflateInit failure");
360                             if (dictBuffer) {
361                                 ret = deflateSetDictionary(&def, (const z_Bytef*)dictBuffer, dictBufferSize);
362                                 if (ret != Z_OK) EXM_THROW(1, "deflateSetDictionary failure");
363                             }
364                             def.next_in = (z_const z_Bytef*) blockTable[blockNb].srcPtr;
365                             def.avail_in = (uInt)blockTable[blockNb].srcSize;
366                             def.total_in = 0;
367                             def.next_out = (z_Bytef*) blockTable[blockNb].cPtr;
368                             def.avail_out = (uInt)blockTable[blockNb].cRoom;
369                             def.total_out = 0;
370                             ret = deflate(&def, Z_FINISH);
371                             if (ret != Z_STREAM_END) EXM_THROW(1, "deflate failure");
372                             ret = deflateEnd(&def);
373                             if (ret != Z_OK) EXM_THROW(1, "deflateEnd failure");
374                             blockTable[blockNb].cSize = def.total_out;
375                         }
376                         nbLoops++;
377                     } while (UTIL_clockSpanMicro(clockStart) < clockLoop);
378                 }
379                 {   U64 const clockSpan = UTIL_clockSpanMicro(clockStart);
380                     if (clockSpan < fastestC*nbLoops) fastestC = clockSpan / nbLoops;
381                     totalCTime += clockSpan;
382                     cCompleted = totalCTime>maxTime;
383             }   }
384 
385             cSize = 0;
386             { U32 blockNb; for (blockNb=0; blockNb<nbBlocks; blockNb++) cSize += blockTable[blockNb].cSize; }
387             ratio = (double)srcSize / (double)cSize;
388             markNb = (markNb+1) % NB_MARKS;
389             DISPLAYLEVEL(2, "%2s-%-17.17s :%10u ->%10u (%5.3f),%6.1f MB/s\r",
390                     marks[markNb], displayName, (unsigned)srcSize, (unsigned)cSize, ratio,
391                     (double)srcSize / fastestC );
392 
393             (void)fastestD; (void)crcOrig;   /*  unused when decompression disabled */
394 #if 1
395             /* Decompression */
396             if (!dCompleted) memset(resultBuffer, 0xD6, srcSize);  /* warm result buffer */
397 
398             UTIL_sleepMilli(1); /* give processor time to other processes */
399             UTIL_waitForNextTick();
400             clockStart = UTIL_getTime();
401 
402             if (!dCompleted) {
403                 U32 nbLoops = 0;
404                 if (compressor == BMK_ZSTD) {
405                     ZSTD_DDict* ddict = ZSTD_createDDict(dictBuffer, dictBufferSize);
406                     if (!ddict) EXM_THROW(2, "ZSTD_createDDict() allocation failure");
407                     do {
408                         unsigned blockNb;
409                         for (blockNb=0; blockNb<nbBlocks; blockNb++) {
410                             size_t const regenSize = ZSTD_decompress_usingDDict(dctx,
411                                 blockTable[blockNb].resPtr, blockTable[blockNb].srcSize,
412                                 blockTable[blockNb].cPtr, blockTable[blockNb].cSize,
413                                 ddict);
414                             if (ZSTD_isError(regenSize)) {
415                                 DISPLAY("ZSTD_decompress_usingDDict() failed on block %u : %s  \n",
416                                           blockNb, ZSTD_getErrorName(regenSize));
417                                 clockLoop = 0;   /* force immediate test end */
418                                 break;
419                             }
420                             blockTable[blockNb].resSize = regenSize;
421                         }
422                         nbLoops++;
423                     } while (UTIL_clockSpanMicro(clockStart) < clockLoop);
424                     ZSTD_freeDDict(ddict);
425                 } else if (compressor == BMK_ZSTD_STREAM) {
426                     ZSTD_inBuffer inBuffer;
427                     ZSTD_outBuffer outBuffer;
428                     ZSTD_DStream* zbd = ZSTD_createDStream();
429                     size_t rSize;
430                     if (zbd == NULL) EXM_THROW(1, "ZSTD_createDStream() allocation failure");
431                     rSize = ZSTD_initDStream_usingDict(zbd, dictBuffer, dictBufferSize);
432                     if (ZSTD_isError(rSize)) EXM_THROW(1, "ZSTD_initDStream() failed : %s", ZSTD_getErrorName(rSize));
433                     do {
434                         U32 blockNb;
435                         for (blockNb=0; blockNb<nbBlocks; blockNb++) {
436                             rSize = ZSTD_DCtx_reset(zbd, ZSTD_reset_session_only);
437                             if (ZSTD_isError(rSize)) EXM_THROW(1, "ZSTD_DCtx_reset() failed : %s", ZSTD_getErrorName(rSize));
438                             inBuffer.src = blockTable[blockNb].cPtr;
439                             inBuffer.size = blockTable[blockNb].cSize;
440                             inBuffer.pos = 0;
441                             outBuffer.dst = blockTable[blockNb].resPtr;
442                             outBuffer.size = blockTable[blockNb].srcSize;
443                             outBuffer.pos = 0;
444                             rSize = ZSTD_decompressStream(zbd, &outBuffer, &inBuffer);
445                             if (ZSTD_isError(rSize)) EXM_THROW(1, "ZSTD_decompressStream() failed : %s", ZSTD_getErrorName(rSize));
446                             blockTable[blockNb].resSize = outBuffer.pos;
447                         }
448                         nbLoops++;
449                     } while (UTIL_clockSpanMicro(clockStart) < clockLoop);
450                     ZSTD_freeDStream(zbd);
451                 } else if (compressor == BMK_ZWRAP_ZLIB_REUSE || compressor == BMK_ZWRAP_ZSTD_REUSE || compressor == BMK_ZLIB_REUSE) {
452                     z_stream inf;
453                     int ret;
454                     if (compressor == BMK_ZLIB_REUSE) ZWRAP_setDecompressionType(ZWRAP_FORCE_ZLIB);
455                     else ZWRAP_setDecompressionType(ZWRAP_AUTO);
456                     inf.zalloc = Z_NULL;
457                     inf.zfree = Z_NULL;
458                     inf.opaque = Z_NULL;
459                     ret = inflateInit(&inf);
460                     if (ret != Z_OK) EXM_THROW(1, "inflateInit failure");
461                     do {
462                         U32 blockNb;
463                         for (blockNb=0; blockNb<nbBlocks; blockNb++) {
464                             if (ZWRAP_isUsingZSTDdecompression(&inf))
465                                 ret = ZWRAP_inflateReset_keepDict(&inf); /* reuse dictionary to make decompression faster; inflate will return Z_NEED_DICT only for the first time */
466                             else
467                                 ret = inflateReset(&inf);
468                             if (ret != Z_OK) EXM_THROW(1, "inflateReset failure");
469                             inf.next_in = (z_const z_Bytef*) blockTable[blockNb].cPtr;
470                             inf.avail_in = (uInt)blockTable[blockNb].cSize;
471                             inf.total_in = 0;
472                             inf.next_out = (z_Bytef*) blockTable[blockNb].resPtr;
473                             inf.avail_out = (uInt)blockTable[blockNb].srcSize;
474                             inf.total_out = 0;
475                             ret = inflate(&inf, Z_FINISH);
476                             if (ret == Z_NEED_DICT) {
477                                 ret = inflateSetDictionary(&inf, (const z_Bytef*)dictBuffer, dictBufferSize);
478                                 if (ret != Z_OK) EXM_THROW(1, "inflateSetDictionary failure");
479                                 ret = inflate(&inf, Z_FINISH);
480                             }
481                             if (ret != Z_STREAM_END) EXM_THROW(1, "inflate failure");
482                             blockTable[blockNb].resSize = inf.total_out;
483                         }
484                         nbLoops++;
485                     } while (UTIL_clockSpanMicro(clockStart) < clockLoop);
486                     ret = inflateEnd(&inf);
487                     if (ret != Z_OK) EXM_THROW(1, "inflateEnd failure");
488                 } else {
489                     z_stream inf;
490                     if (compressor == BMK_ZLIB) ZWRAP_setDecompressionType(ZWRAP_FORCE_ZLIB);
491                     else ZWRAP_setDecompressionType(ZWRAP_AUTO);
492                     do {
493                         U32 blockNb;
494                         for (blockNb=0; blockNb<nbBlocks; blockNb++) {
495                             int ret;
496                             inf.zalloc = Z_NULL;
497                             inf.zfree = Z_NULL;
498                             inf.opaque = Z_NULL;
499                             ret = inflateInit(&inf);
500                             if (ret != Z_OK) EXM_THROW(1, "inflateInit failure");
501                             inf.next_in = (z_const z_Bytef*) blockTable[blockNb].cPtr;
502                             inf.avail_in = (uInt)blockTable[blockNb].cSize;
503                             inf.total_in = 0;
504                             inf.next_out = (z_Bytef*) blockTable[blockNb].resPtr;
505                             inf.avail_out = (uInt)blockTable[blockNb].srcSize;
506                             inf.total_out = 0;
507                             ret = inflate(&inf, Z_FINISH);
508                             if (ret == Z_NEED_DICT) {
509                                 ret = inflateSetDictionary(&inf, (const z_Bytef*) dictBuffer, dictBufferSize);
510                                 if (ret != Z_OK) EXM_THROW(1, "inflateSetDictionary failure");
511                                 ret = inflate(&inf, Z_FINISH);
512                             }
513                             if (ret != Z_STREAM_END) EXM_THROW(1, "inflate failure");
514                             ret = inflateEnd(&inf);
515                             if (ret != Z_OK) EXM_THROW(1, "inflateEnd failure");
516                             blockTable[blockNb].resSize = inf.total_out;
517                         }
518                         nbLoops++;
519                     } while (UTIL_clockSpanMicro(clockStart) < clockLoop);
520                 }
521                 {   U64 const clockSpan = UTIL_clockSpanMicro(clockStart);
522                     if (clockSpan < fastestD*nbLoops) fastestD = clockSpan / nbLoops;
523                     totalDTime += clockSpan;
524                     dCompleted = totalDTime>maxTime;
525             }   }
526 
527             markNb = (markNb+1) % NB_MARKS;
528             DISPLAYLEVEL(2, "%2s-%-17.17s :%10u ->%10u (%5.3f),%6.1f MB/s ,%6.1f MB/s\r",
529                     marks[markNb], displayName, (unsigned)srcSize, (unsigned)cSize, ratio,
530                     (double)srcSize / fastestC,
531                     (double)srcSize / fastestD );
532 
533             /* CRC Checking */
534             {   U64 const crcCheck = XXH64(resultBuffer, srcSize, 0);
535                 if (crcOrig!=crcCheck) {
536                     size_t u;
537                     DISPLAY("!!! WARNING !!! %14s : Invalid Checksum : %x != %x   \n", displayName, (unsigned)crcOrig, (unsigned)crcCheck);
538                     for (u=0; u<srcSize; u++) {
539                         if (((const BYTE*)srcBuffer)[u] != ((const BYTE*)resultBuffer)[u]) {
540                             unsigned segNb, bNb, pos;
541                             size_t bacc = 0;
542                             DISPLAY("Decoding error at pos %u ", (unsigned)u);
543                             for (segNb = 0; segNb < nbBlocks; segNb++) {
544                                 if (bacc + blockTable[segNb].srcSize > u) break;
545                                 bacc += blockTable[segNb].srcSize;
546                             }
547                             pos = (U32)(u - bacc);
548                             bNb = pos / (128 KB);
549                             DISPLAY("(block %u, sub %u, pos %u) \n", segNb, bNb, pos);
550                             break;
551                         }
552                         if (u==srcSize-1) {  /* should never happen */
553                             DISPLAY("no difference detected\n");
554                     }   }
555                     break;
556             }   }   /* CRC Checking */
557 #endif
558         }   /* for (testNb = 1; testNb <= (g_nbIterations + !g_nbIterations); testNb++) */
559 
560         if (g_displayLevel == 1) {
561             double cSpeed = (double)srcSize / fastestC;
562             double dSpeed = (double)srcSize / fastestD;
563             if (g_additionalParam)
564                 DISPLAY("-%-3i%11i (%5.3f) %6.2f MB/s %6.1f MB/s  %s (param=%d)\n", cLevel, (int)cSize, ratio, cSpeed, dSpeed, displayName, g_additionalParam);
565             else
566                 DISPLAY("-%-3i%11i (%5.3f) %6.2f MB/s %6.1f MB/s  %s\n", cLevel, (int)cSize, ratio, cSpeed, dSpeed, displayName);
567         }
568         DISPLAYLEVEL(2, "%2i#\n", cLevel);
569     }   /* Bench */
570 
571     /* clean up */
572     free(blockTable);
573     free(compressedBuffer);
574     free(resultBuffer);
575     ZSTD_freeCCtx(ctx);
576     ZSTD_freeDCtx(dctx);
577     return 0;
578 }
579 
580 
581 static size_t BMK_findMaxMem(U64 requiredMem)
582 {
583     size_t const step = 64 MB;
584     BYTE* testmem = NULL;
585 
586     requiredMem = (((requiredMem >> 26) + 1) << 26);
587     requiredMem += step;
588     if (requiredMem > maxMemory) requiredMem = maxMemory;
589 
590     do {
591         testmem = (BYTE*)malloc((size_t)requiredMem);
592         requiredMem -= step;
593     } while (!testmem && requiredMem);   /* do not allocate zero bytes */
594 
595     free(testmem);
596     return (size_t)(requiredMem+1);  /* avoid zero */
597 }
598 
599 static void BMK_benchCLevel(void* srcBuffer, size_t benchedSize,
600                             const char* displayName, int cLevel, int cLevelLast,
601                             const size_t* fileSizes, unsigned nbFiles,
602                             const void* dictBuffer, size_t dictBufferSize)
603 {
604     int l;
605 
606     const char* pch = strrchr(displayName, '\\'); /* Windows */
607     if (!pch) pch = strrchr(displayName, '/'); /* Linux */
608     if (pch) displayName = pch+1;
609 
610     SET_REALTIME_PRIORITY;
611 
612     if (g_displayLevel == 1 && !g_additionalParam)
613         DISPLAY("bench %s %s: input %u bytes, %u seconds, %u KB blocks\n",
614                 ZSTD_VERSION_STRING, ZSTD_GIT_COMMIT_STRING,
615                 (unsigned)benchedSize, g_nbIterations, (unsigned)(g_blockSize>>10));
616 
617     if (cLevelLast < cLevel) cLevelLast = cLevel;
618 
619     DISPLAY("benchmarking zstd %s (using ZSTD_CStream)\n", ZSTD_VERSION_STRING);
620     for (l=cLevel; l <= cLevelLast; l++) {
621         BMK_benchMem(srcBuffer, benchedSize,
622                      displayName, l,
623                      fileSizes, nbFiles,
624                      dictBuffer, dictBufferSize, BMK_ZSTD_STREAM);
625     }
626 
627     DISPLAY("benchmarking zstd %s (using ZSTD_CCtx)\n", ZSTD_VERSION_STRING);
628     for (l=cLevel; l <= cLevelLast; l++) {
629         BMK_benchMem(srcBuffer, benchedSize,
630                      displayName, l,
631                      fileSizes, nbFiles,
632                      dictBuffer, dictBufferSize, BMK_ZSTD);
633     }
634 
635     DISPLAY("benchmarking zstd %s (using zlibWrapper)\n", ZSTD_VERSION_STRING);
636     for (l=cLevel; l <= cLevelLast; l++) {
637         BMK_benchMem(srcBuffer, benchedSize,
638                      displayName, l,
639                      fileSizes, nbFiles,
640                      dictBuffer, dictBufferSize, BMK_ZWRAP_ZSTD_REUSE);
641     }
642 
643     DISPLAY("benchmarking zstd %s (zlibWrapper not reusing a context)\n", ZSTD_VERSION_STRING);
644     for (l=cLevel; l <= cLevelLast; l++) {
645         BMK_benchMem(srcBuffer, benchedSize,
646                      displayName, l,
647                      fileSizes, nbFiles,
648                      dictBuffer, dictBufferSize, BMK_ZWRAP_ZSTD);
649     }
650 
651 
652     if (cLevelLast > Z_BEST_COMPRESSION) cLevelLast = Z_BEST_COMPRESSION;
653 
654     DISPLAY("\n");
655     DISPLAY("benchmarking zlib %s\n", ZLIB_VERSION);
656     for (l=cLevel; l <= cLevelLast; l++) {
657         BMK_benchMem(srcBuffer, benchedSize,
658                      displayName, l,
659                      fileSizes, nbFiles,
660                      dictBuffer, dictBufferSize, BMK_ZLIB_REUSE);
661     }
662 
663     DISPLAY("benchmarking zlib %s (zlib not reusing a context)\n", ZLIB_VERSION);
664     for (l=cLevel; l <= cLevelLast; l++) {
665         BMK_benchMem(srcBuffer, benchedSize,
666                      displayName, l,
667                      fileSizes, nbFiles,
668                      dictBuffer, dictBufferSize, BMK_ZLIB);
669     }
670 
671     DISPLAY("benchmarking zlib %s (using zlibWrapper)\n", ZLIB_VERSION);
672     for (l=cLevel; l <= cLevelLast; l++) {
673         BMK_benchMem(srcBuffer, benchedSize,
674                      displayName, l,
675                      fileSizes, nbFiles,
676                      dictBuffer, dictBufferSize, BMK_ZWRAP_ZLIB_REUSE);
677     }
678 
679     DISPLAY("benchmarking zlib %s (zlibWrapper not reusing a context)\n", ZLIB_VERSION);
680     for (l=cLevel; l <= cLevelLast; l++) {
681         BMK_benchMem(srcBuffer, benchedSize,
682                      displayName, l,
683                      fileSizes, nbFiles,
684                      dictBuffer, dictBufferSize, BMK_ZWRAP_ZLIB);
685     }
686 }
687 
688 
689 /*! BMK_loadFiles() :
690     Loads `buffer` with content of files listed within `fileNamesTable`.
691     At most, fills `buffer` entirely */
692 static void BMK_loadFiles(void* buffer, size_t bufferSize,
693                           size_t* fileSizes,
694                           const char** fileNamesTable, unsigned nbFiles)
695 {
696     size_t pos = 0, totalSize = 0;
697     unsigned n;
698     for (n=0; n<nbFiles; n++) {
699         FILE* f;
700         U64 fileSize = UTIL_getFileSize(fileNamesTable[n]);
701         if (UTIL_isDirectory(fileNamesTable[n])) {
702             DISPLAYLEVEL(2, "Ignoring %s directory...       \n", fileNamesTable[n]);
703             fileSizes[n] = 0;
704             continue;
705         }
706         if (fileSize == UTIL_FILESIZE_UNKNOWN) {
707             DISPLAYLEVEL(2, "Cannot determine size of %s ...    \n", fileNamesTable[n]);
708             fileSizes[n] = 0;
709             continue;
710         }
711         f = fopen(fileNamesTable[n], "rb");
712         if (f==NULL) EXM_THROW(10, "impossible to open file %s", fileNamesTable[n]);
713         DISPLAYUPDATE(2, "Loading %s...       \r", fileNamesTable[n]);
714         if (fileSize > bufferSize-pos) fileSize = bufferSize-pos, nbFiles=n;   /* buffer too small - stop after this file */
715         { size_t const readSize = fread(((char*)buffer)+pos, 1, (size_t)fileSize, f);
716           if (readSize != (size_t)fileSize) EXM_THROW(11, "could not read %s", fileNamesTable[n]);
717           pos += readSize; }
718         fileSizes[n] = (size_t)fileSize;
719         totalSize += (size_t)fileSize;
720         fclose(f);
721     }
722 
723     if (totalSize == 0) EXM_THROW(12, "no data to bench");
724 }
725 
726 static void BMK_benchFileTable(const char** fileNamesTable, unsigned nbFiles,
727                                const char* dictFileName, int cLevel, int cLevelLast)
728 {
729     void* srcBuffer;
730     size_t benchedSize;
731     void* dictBuffer = NULL;
732     size_t dictBufferSize = 0;
733     size_t* fileSizes = (size_t*)malloc(nbFiles * sizeof(size_t));
734     U64 const totalSizeToLoad = UTIL_getTotalFileSize(fileNamesTable, nbFiles);
735     char mfName[20] = {0};
736 
737     if (!fileSizes) EXM_THROW(12, "not enough memory for fileSizes");
738 
739     /* Load dictionary */
740     if (dictFileName != NULL) {
741         U64 const dictFileSize = UTIL_getFileSize(dictFileName);
742         if (dictFileSize > 64 MB)
743             EXM_THROW(10, "dictionary file %s too large", dictFileName);
744         dictBufferSize = (size_t)dictFileSize;
745         dictBuffer = malloc(dictBufferSize);
746         if (dictBuffer==NULL)
747             EXM_THROW(11, "not enough memory for dictionary (%u bytes)", (unsigned)dictBufferSize);
748         BMK_loadFiles(dictBuffer, dictBufferSize, fileSizes, &dictFileName, 1);
749     }
750 
751     /* Memory allocation & restrictions */
752     benchedSize = BMK_findMaxMem(totalSizeToLoad * 3) / 3;
753     if ((U64)benchedSize > totalSizeToLoad) benchedSize = (size_t)totalSizeToLoad;
754     if (benchedSize < totalSizeToLoad)
755         DISPLAY("Not enough memory; testing %u MB only...\n", (unsigned)(benchedSize >> 20));
756     srcBuffer = malloc(benchedSize + !benchedSize);
757     if (!srcBuffer) EXM_THROW(12, "not enough memory");
758 
759     /* Load input buffer */
760     BMK_loadFiles(srcBuffer, benchedSize, fileSizes, fileNamesTable, nbFiles);
761 
762     /* Bench */
763     snprintf (mfName, sizeof(mfName), " %u files", nbFiles);
764     {   const char* displayName = (nbFiles > 1) ? mfName : fileNamesTable[0];
765         BMK_benchCLevel(srcBuffer, benchedSize,
766                         displayName, cLevel, cLevelLast,
767                         fileSizes, nbFiles,
768                         dictBuffer, dictBufferSize);
769     }
770 
771     /* clean up */
772     free(srcBuffer);
773     free(dictBuffer);
774     free(fileSizes);
775 }
776 
777 
778 static void BMK_syntheticTest(int cLevel, int cLevelLast, double compressibility)
779 {
780     char name[20] = {0};
781     size_t benchedSize = 10000000;
782     void* const srcBuffer = malloc(benchedSize);
783 
784     /* Memory allocation */
785     if (!srcBuffer) EXM_THROW(21, "not enough memory");
786 
787     /* Fill input buffer */
788     RDG_genBuffer(srcBuffer, benchedSize, compressibility, 0.0, 0);
789 
790     /* Bench */
791     snprintf (name, sizeof(name), "Synthetic %2u%%", (unsigned)(compressibility*100));
792     BMK_benchCLevel(srcBuffer, benchedSize, name, cLevel, cLevelLast, &benchedSize, 1, NULL, 0);
793 
794     /* clean up */
795     free(srcBuffer);
796 }
797 
798 
799 int BMK_benchFiles(const char** fileNamesTable, unsigned nbFiles,
800                    const char* dictFileName, int cLevel, int cLevelLast)
801 {
802     double const compressibility = (double)g_compressibilityDefault / 100;
803 
804     if (nbFiles == 0)
805         BMK_syntheticTest(cLevel, cLevelLast, compressibility);
806     else
807         BMK_benchFileTable(fileNamesTable, nbFiles, dictFileName, cLevel, cLevelLast);
808     return 0;
809 }
810 
811 
812 
813 
814 /*-************************************
815 *  Command Line
816 **************************************/
817 static int usage(const char* programName)
818 {
819     DISPLAY(WELCOME_MESSAGE);
820     DISPLAY( "Usage :\n");
821     DISPLAY( "      %s [args] [FILE(s)] [-o file]\n", programName);
822     DISPLAY( "\n");
823     DISPLAY( "FILE    : a filename\n");
824     DISPLAY( "          with no FILE, or when FILE is - , read standard input\n");
825     DISPLAY( "Arguments :\n");
826     DISPLAY( " -D file: use `file` as Dictionary \n");
827     DISPLAY( " -h/-H  : display help/long help and exit\n");
828     DISPLAY( " -V     : display Version number and exit\n");
829     DISPLAY( " -v     : verbose mode; specify multiple times to increase log level (default:%d)\n", DEFAULT_DISPLAY_LEVEL);
830     DISPLAY( " -q     : suppress warnings; specify twice to suppress errors too\n");
831 #ifdef UTIL_HAS_CREATEFILELIST
832     DISPLAY( " -r     : operate recursively on directories\n");
833 #endif
834     DISPLAY( "\n");
835     DISPLAY( "Benchmark arguments :\n");
836     DISPLAY( " -b#    : benchmark file(s), using # compression level (default : %d) \n", ZSTDCLI_CLEVEL_DEFAULT);
837     DISPLAY( " -e#    : test all compression levels from -bX to # (default: %d)\n", ZSTDCLI_CLEVEL_DEFAULT);
838     DISPLAY( " -i#    : minimum evaluation time in seconds (default : 3s)\n");
839     DISPLAY( " -B#    : cut file into independent blocks of size # (default: no block)\n");
840     return 0;
841 }
842 
843 static int badusage(const char* programName)
844 {
845     DISPLAYLEVEL(1, "Incorrect parameters\n");
846     if (g_displayLevel >= 1) usage(programName);
847     return 1;
848 }
849 
850 static void waitEnter(void)
851 {
852     int unused;
853     DISPLAY("Press enter to continue...\n");
854     unused = getchar();
855     (void)unused;
856 }
857 
858 /*! readU32FromChar() :
859     @return : unsigned integer value reach from input in `char` format
860     Will also modify `*stringPtr`, advancing it to position where it stopped reading.
861     Note : this function can overflow if digit string > MAX_UINT */
862 static unsigned readU32FromChar(const char** stringPtr)
863 {
864     unsigned result = 0;
865     while ((**stringPtr >='0') && (**stringPtr <='9'))
866         result *= 10, result += (unsigned)(**stringPtr - '0'), (*stringPtr)++ ;
867     return result;
868 }
869 
870 
871 #define CLEAN_RETURN(i) { operationResult = (i); goto _end; }
872 
873 int main(int argCount, char** argv)
874 {
875     int argNb,
876         main_pause=0,
877         nextEntryIsDictionary=0,
878         operationResult=0,
879         nextArgumentIsFile=0;
880     int cLevel = ZSTDCLI_CLEVEL_DEFAULT;
881     int cLevelLast = 1;
882     unsigned recursive = 0;
883     FileNamesTable* filenames = UTIL_allocateFileNamesTable((size_t)argCount);
884     const char* programName = argv[0];
885     const char* dictFileName = NULL;
886     char* dynNameSpace = NULL;
887 
888     /* init */
889     if (filenames==NULL) { DISPLAY("zstd: %s \n", strerror(errno)); exit(1); }
890     displayOut = stderr;
891 
892     /* Pick out program name from path. Don't rely on stdlib because of conflicting behavior */
893     {   size_t pos;
894         for (pos = strlen(programName); pos > 0; pos--) { if (programName[pos] == '/') { pos++; break; } }
895         programName += pos;
896     }
897 
898      /* command switches */
899     for(argNb=1; argNb<argCount; argNb++) {
900         const char* argument = argv[argNb];
901         if(!argument) continue;   /* Protection if argument empty */
902 
903         if (nextArgumentIsFile==0) {
904 
905             /* long commands (--long-word) */
906             if (!strcmp(argument, "--")) { nextArgumentIsFile=1; continue; }
907             if (!strcmp(argument, "--version")) { displayOut=stdout; DISPLAY(WELCOME_MESSAGE); CLEAN_RETURN(0); }
908             if (!strcmp(argument, "--help")) { displayOut=stdout; CLEAN_RETURN(usage(programName)); }
909             if (!strcmp(argument, "--verbose")) { g_displayLevel++; continue; }
910             if (!strcmp(argument, "--quiet")) { g_displayLevel--; continue; }
911 
912             /* Decode commands (note : aggregated commands are allowed) */
913             if (argument[0]=='-') {
914                 argument++;
915 
916                 while (argument[0]!=0) {
917                     switch(argument[0])
918                     {
919                         /* Display help */
920                     case 'V': displayOut=stdout; DISPLAY(WELCOME_MESSAGE); CLEAN_RETURN(0);   /* Version Only */
921                     case 'H':
922                     case 'h': displayOut=stdout; CLEAN_RETURN(usage(programName));
923 
924                         /* Use file content as dictionary */
925                     case 'D': nextEntryIsDictionary = 1; argument++; break;
926 
927                         /* Verbose mode */
928                     case 'v': g_displayLevel++; argument++; break;
929 
930                         /* Quiet mode */
931                     case 'q': g_displayLevel--; argument++; break;
932 
933 #ifdef UTIL_HAS_CREATEFILELIST
934                         /* recursive */
935                     case 'r': recursive=1; argument++; break;
936 #endif
937 
938                         /* Benchmark */
939                     case 'b':
940                             /* first compression Level */
941                             argument++;
942                             cLevel = (int)readU32FromChar(&argument);
943                             break;
944 
945                         /* range bench (benchmark only) */
946                     case 'e':
947                             /* last compression Level */
948                             argument++;
949                             cLevelLast = (int)readU32FromChar(&argument);
950                             break;
951 
952                         /* Modify Nb Iterations (benchmark only) */
953                     case 'i':
954                         argument++;
955                         {   U32 const iters = readU32FromChar(&argument);
956                             BMK_setNotificationLevel(g_displayLevel);
957                             BMK_SetNbIterations(iters);
958                         }
959                         break;
960 
961                         /* cut input into blocks (benchmark only) */
962                     case 'B':
963                         argument++;
964                         {   size_t bSize = readU32FromChar(&argument);
965                             if (toupper(*argument)=='K') bSize<<=10, argument++;  /* allows using KB notation */
966                             if (toupper(*argument)=='M') bSize<<=20, argument++;
967                             if (toupper(*argument)=='B') argument++;
968                             BMK_setNotificationLevel(g_displayLevel);
969                             BMK_SetBlockSize(bSize);
970                         }
971                         break;
972 
973                         /* Pause at the end (-p) or set an additional param (-p#) (hidden option) */
974                     case 'p': argument++;
975                         if ((*argument>='0') && (*argument<='9')) {
976                             BMK_setAdditionalParam((int)readU32FromChar(&argument));
977                         } else
978                             main_pause=1;
979                         break;
980                         /* unknown command */
981                     default : CLEAN_RETURN(badusage(programName));
982                     }
983                 }
984                 continue;
985             }   /* if (argument[0]=='-') */
986 
987         }   /* if (nextArgumentIsAFile==0) */
988 
989         if (nextEntryIsDictionary) {
990             nextEntryIsDictionary = 0;
991             dictFileName = argument;
992             continue;
993         }
994 
995         /* add filename to list */
996         UTIL_refFilename(filenames, argument);
997     }
998 
999     /* Welcome message (if verbose) */
1000     DISPLAYLEVEL(3, WELCOME_MESSAGE);
1001 
1002 #ifdef UTIL_HAS_CREATEFILELIST
1003     if (recursive) {
1004         UTIL_expandFNT(&filenames, 1);
1005     }
1006 #endif
1007 
1008     BMK_setNotificationLevel(g_displayLevel);
1009     BMK_benchFiles(filenames->fileNames, (unsigned)filenames->tableSize, dictFileName, cLevel, cLevelLast);
1010 
1011 _end:
1012     if (main_pause) waitEnter();
1013     free(dynNameSpace);
1014     UTIL_freeFileNamesTable(filenames);
1015     return operationResult;
1016 }
1017