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1 | /** |
2 | * Copyright (c) 2016-present, Yann Collet, Facebook, Inc. | |
3 | * All rights reserved. | |
4 | * | |
5 | * This source code is licensed under the BSD-style license found in the | |
6 | * LICENSE file in the root directory of this source tree. An additional grant | |
7 | * of patent rights can be found in the PATENTS file in the same directory. | |
8 | */ | |
9 | ||
10 | ||
11 | /*-************************************ | |
12 | * Dependencies | |
13 | **************************************/ | |
14 | #include "util.h" /* Compiler options, UTIL_GetFileSize */ | |
15 | #include <stdlib.h> /* malloc */ | |
16 | #include <stdio.h> /* fprintf, fopen, ftello64 */ | |
17 | #include <string.h> /* strcmp */ | |
18 | #include <math.h> /* log */ | |
19 | #include <time.h> /* clock_t */ | |
20 | ||
21 | #include "mem.h" | |
22 | #define ZSTD_STATIC_LINKING_ONLY /* ZSTD_parameters, ZSTD_estimateCCtxSize */ | |
23 | #include "zstd.h" | |
24 | #include "datagen.h" | |
25 | #include "xxhash.h" | |
26 | ||
27 | ||
28 | /*-************************************ | |
29 | * Constants | |
30 | **************************************/ | |
31 | #define PROGRAM_DESCRIPTION "ZSTD parameters tester" | |
32 | #define AUTHOR "Yann Collet" | |
33 | #define WELCOME_MESSAGE "*** %s %s %i-bits, by %s (%s) ***\n", PROGRAM_DESCRIPTION, ZSTD_VERSION_STRING, (int)(sizeof(void*)*8), AUTHOR, __DATE__ | |
34 | ||
35 | ||
36 | #define KB *(1<<10) | |
37 | #define MB *(1<<20) | |
38 | #define GB *(1ULL<<30) | |
39 | ||
40 | #define NBLOOPS 2 | |
41 | #define TIMELOOP (2 * CLOCKS_PER_SEC) | |
42 | ||
43 | #define NB_LEVELS_TRACKED 30 | |
44 | ||
45 | static const size_t maxMemory = (sizeof(size_t)==4) ? (2 GB - 64 MB) : (size_t)(1ULL << ((sizeof(size_t)*8)-31)); | |
46 | ||
47 | #define COMPRESSIBILITY_DEFAULT 0.50 | |
48 | static const size_t sampleSize = 10000000; | |
49 | ||
50 | static const U32 g_grillDuration_s = 60000; /* about 16 hours */ | |
51 | static const clock_t g_maxParamTime = 15 * CLOCKS_PER_SEC; | |
52 | static const clock_t g_maxVariationTime = 60 * CLOCKS_PER_SEC; | |
53 | static const int g_maxNbVariations = 64; | |
54 | ||
55 | ||
56 | /*-************************************ | |
57 | * Macros | |
58 | **************************************/ | |
59 | #define DISPLAY(...) fprintf(stderr, __VA_ARGS__) | |
60 | ||
61 | ||
62 | /*-************************************ | |
63 | * Benchmark Parameters | |
64 | **************************************/ | |
65 | static U32 g_nbIterations = NBLOOPS; | |
66 | static double g_compressibility = COMPRESSIBILITY_DEFAULT; | |
67 | static U32 g_blockSize = 0; | |
68 | static U32 g_rand = 1; | |
69 | static U32 g_singleRun = 0; | |
70 | static U32 g_target = 0; | |
71 | static U32 g_noSeed = 0; | |
72 | static ZSTD_compressionParameters g_params = { 0, 0, 0, 0, 0, 0, ZSTD_greedy }; | |
73 | ||
74 | void BMK_SetNbIterations(int nbLoops) | |
75 | { | |
76 | g_nbIterations = nbLoops; | |
77 | DISPLAY("- %u iterations -\n", g_nbIterations); | |
78 | } | |
79 | ||
80 | ||
81 | /*-******************************************************* | |
82 | * Private functions | |
83 | *********************************************************/ | |
84 | ||
85 | static clock_t BMK_clockSpan(clock_t cStart) { return clock() - cStart; } /* works even if overflow ; max span ~ 30 mn */ | |
86 | ||
87 | static U32 BMK_timeSpan(time_t tStart) { return (U32)difftime(time(NULL), tStart); } /* accuracy in seconds only, span can be multiple years */ | |
88 | ||
89 | ||
90 | static size_t BMK_findMaxMem(U64 requiredMem) | |
91 | { | |
92 | size_t const step = 64 MB; | |
93 | void* testmem = NULL; | |
94 | ||
95 | requiredMem = (((requiredMem >> 26) + 1) << 26); | |
96 | if (requiredMem > maxMemory) requiredMem = maxMemory; | |
97 | ||
98 | requiredMem += 2*step; | |
99 | while (!testmem) { | |
100 | requiredMem -= step; | |
101 | testmem = malloc ((size_t)requiredMem); | |
102 | } | |
103 | ||
104 | free (testmem); | |
105 | return (size_t) (requiredMem - step); | |
106 | } | |
107 | ||
108 | ||
109 | # define FUZ_rotl32(x,r) ((x << r) | (x >> (32 - r))) | |
110 | U32 FUZ_rand(U32* src) | |
111 | { | |
112 | const U32 prime1 = 2654435761U; | |
113 | const U32 prime2 = 2246822519U; | |
114 | U32 rand32 = *src; | |
115 | rand32 *= prime1; | |
116 | rand32 += prime2; | |
117 | rand32 = FUZ_rotl32(rand32, 13); | |
118 | *src = rand32; | |
119 | return rand32 >> 5; | |
120 | } | |
121 | ||
122 | ||
123 | /*-******************************************************* | |
124 | * Bench functions | |
125 | *********************************************************/ | |
126 | typedef struct { | |
127 | size_t cSize; | |
128 | double cSpeed; | |
129 | double dSpeed; | |
130 | } BMK_result_t; | |
131 | ||
132 | typedef struct | |
133 | { | |
134 | const char* srcPtr; | |
135 | size_t srcSize; | |
136 | char* cPtr; | |
137 | size_t cRoom; | |
138 | size_t cSize; | |
139 | char* resPtr; | |
140 | size_t resSize; | |
141 | } blockParam_t; | |
142 | ||
143 | ||
144 | #define MIN(a,b) ( (a) < (b) ? (a) : (b) ) | |
145 | ||
146 | static size_t BMK_benchParam(BMK_result_t* resultPtr, | |
147 | const void* srcBuffer, size_t srcSize, | |
148 | ZSTD_CCtx* ctx, | |
149 | const ZSTD_compressionParameters cParams) | |
150 | { | |
151 | const size_t blockSize = g_blockSize ? g_blockSize : srcSize; | |
152 | const U32 nbBlocks = (U32) ((srcSize + (blockSize-1)) / blockSize); | |
153 | blockParam_t* const blockTable = (blockParam_t*) malloc(nbBlocks * sizeof(blockParam_t)); | |
154 | const size_t maxCompressedSize = (size_t)nbBlocks * ZSTD_compressBound(blockSize); | |
155 | void* const compressedBuffer = malloc(maxCompressedSize); | |
156 | void* const resultBuffer = malloc(srcSize); | |
157 | ZSTD_parameters params; | |
158 | U32 Wlog = cParams.windowLog; | |
159 | U32 Clog = cParams.chainLog; | |
160 | U32 Hlog = cParams.hashLog; | |
161 | U32 Slog = cParams.searchLog; | |
162 | U32 Slength = cParams.searchLength; | |
163 | U32 Tlength = cParams.targetLength; | |
164 | ZSTD_strategy strat = cParams.strategy; | |
165 | char name[30] = { 0 }; | |
166 | U64 crcOrig; | |
167 | ||
168 | /* Memory allocation & restrictions */ | |
169 | snprintf(name, 30, "Sw%02uc%02uh%02us%02ul%1ut%03uS%1u", Wlog, Clog, Hlog, Slog, Slength, Tlength, strat); | |
170 | if (!compressedBuffer || !resultBuffer || !blockTable) { | |
171 | DISPLAY("\nError: not enough memory!\n"); | |
172 | free(compressedBuffer); | |
173 | free(resultBuffer); | |
174 | free(blockTable); | |
175 | return 12; | |
176 | } | |
177 | ||
178 | /* Calculating input Checksum */ | |
179 | crcOrig = XXH64(srcBuffer, srcSize, 0); | |
180 | ||
181 | /* Init blockTable data */ | |
182 | { | |
183 | U32 i; | |
184 | size_t remaining = srcSize; | |
185 | const char* srcPtr = (const char*)srcBuffer; | |
186 | char* cPtr = (char*)compressedBuffer; | |
187 | char* resPtr = (char*)resultBuffer; | |
188 | for (i=0; i<nbBlocks; i++) { | |
189 | size_t thisBlockSize = MIN(remaining, blockSize); | |
190 | blockTable[i].srcPtr = srcPtr; | |
191 | blockTable[i].cPtr = cPtr; | |
192 | blockTable[i].resPtr = resPtr; | |
193 | blockTable[i].srcSize = thisBlockSize; | |
194 | blockTable[i].cRoom = ZSTD_compressBound(thisBlockSize); | |
195 | srcPtr += thisBlockSize; | |
196 | cPtr += blockTable[i].cRoom; | |
197 | resPtr += thisBlockSize; | |
198 | remaining -= thisBlockSize; | |
199 | } } | |
200 | ||
201 | /* warmimg up memory */ | |
202 | RDG_genBuffer(compressedBuffer, maxCompressedSize, 0.10, 0.10, 1); | |
203 | ||
204 | /* Bench */ | |
205 | { U32 loopNb; | |
206 | size_t cSize = 0; | |
207 | double fastestC = 100000000., fastestD = 100000000.; | |
208 | double ratio = 0.; | |
209 | U64 crcCheck = 0; | |
210 | clock_t const benchStart = clock(); | |
211 | ||
212 | DISPLAY("\r%79s\r", ""); | |
213 | memset(¶ms, 0, sizeof(params)); | |
214 | params.cParams = cParams; | |
215 | for (loopNb = 1; loopNb <= g_nbIterations; loopNb++) { | |
216 | int nbLoops; | |
217 | U32 blockNb; | |
218 | clock_t roundStart, roundClock; | |
219 | ||
220 | { clock_t const benchTime = BMK_clockSpan(benchStart); | |
221 | if (benchTime > g_maxParamTime) break; } | |
222 | ||
223 | /* Compression */ | |
224 | DISPLAY("\r%1u-%s : %9u ->", loopNb, name, (U32)srcSize); | |
225 | memset(compressedBuffer, 0xE5, maxCompressedSize); | |
226 | ||
227 | nbLoops = 0; | |
228 | roundStart = clock(); | |
229 | while (clock() == roundStart); | |
230 | roundStart = clock(); | |
231 | while (BMK_clockSpan(roundStart) < TIMELOOP) { | |
232 | for (blockNb=0; blockNb<nbBlocks; blockNb++) | |
233 | blockTable[blockNb].cSize = ZSTD_compress_advanced(ctx, | |
234 | blockTable[blockNb].cPtr, blockTable[blockNb].cRoom, | |
235 | blockTable[blockNb].srcPtr, blockTable[blockNb].srcSize, | |
236 | NULL, 0, | |
237 | params); | |
238 | nbLoops++; | |
239 | } | |
240 | roundClock = BMK_clockSpan(roundStart); | |
241 | ||
242 | cSize = 0; | |
243 | for (blockNb=0; blockNb<nbBlocks; blockNb++) | |
244 | cSize += blockTable[blockNb].cSize; | |
245 | if ((double)roundClock < fastestC * CLOCKS_PER_SEC * nbLoops) fastestC = ((double)roundClock / CLOCKS_PER_SEC) / nbLoops; | |
246 | ratio = (double)srcSize / (double)cSize; | |
247 | DISPLAY("\r"); | |
248 | DISPLAY("%1u-%s : %9u ->", loopNb, name, (U32)srcSize); | |
249 | DISPLAY(" %9u (%4.3f),%7.1f MB/s", (U32)cSize, ratio, (double)srcSize / fastestC / 1000000.); | |
250 | resultPtr->cSize = cSize; | |
251 | resultPtr->cSpeed = (double)srcSize / fastestC; | |
252 | ||
253 | #if 1 | |
254 | /* Decompression */ | |
255 | memset(resultBuffer, 0xD6, srcSize); | |
256 | ||
257 | nbLoops = 0; | |
258 | roundStart = clock(); | |
259 | while (clock() == roundStart); | |
260 | roundStart = clock(); | |
261 | for ( ; BMK_clockSpan(roundStart) < TIMELOOP; nbLoops++) { | |
262 | for (blockNb=0; blockNb<nbBlocks; blockNb++) | |
263 | blockTable[blockNb].resSize = ZSTD_decompress(blockTable[blockNb].resPtr, blockTable[blockNb].srcSize, | |
264 | blockTable[blockNb].cPtr, blockTable[blockNb].cSize); | |
265 | } | |
266 | roundClock = BMK_clockSpan(roundStart); | |
267 | ||
268 | if ((double)roundClock < fastestD * CLOCKS_PER_SEC * nbLoops) fastestD = ((double)roundClock / CLOCKS_PER_SEC) / nbLoops; | |
269 | DISPLAY("\r"); | |
270 | DISPLAY("%1u-%s : %9u -> ", loopNb, name, (U32)srcSize); | |
271 | DISPLAY("%9u (%4.3f),%7.1f MB/s, ", (U32)cSize, ratio, (double)srcSize / fastestC / 1000000.); | |
272 | DISPLAY("%7.1f MB/s", (double)srcSize / fastestD / 1000000.); | |
273 | resultPtr->dSpeed = (double)srcSize / fastestD; | |
274 | ||
275 | /* CRC Checking */ | |
276 | crcCheck = XXH64(resultBuffer, srcSize, 0); | |
277 | if (crcOrig!=crcCheck) { | |
278 | unsigned u; | |
279 | unsigned eBlockSize = (unsigned)(MIN(65536*2, blockSize)); | |
280 | DISPLAY("\n!!! WARNING !!! Invalid Checksum : %x != %x\n", (unsigned)crcOrig, (unsigned)crcCheck); | |
281 | for (u=0; u<srcSize; u++) { | |
282 | if (((const BYTE*)srcBuffer)[u] != ((BYTE*)resultBuffer)[u]) { | |
283 | printf("Decoding error at pos %u (block %u, pos %u) \n", u, u / eBlockSize, u % eBlockSize); | |
284 | break; | |
285 | } } | |
286 | break; | |
287 | } | |
288 | #endif | |
289 | } } | |
290 | ||
291 | /* End cleaning */ | |
292 | DISPLAY("\r"); | |
293 | free(compressedBuffer); | |
294 | free(resultBuffer); | |
295 | return 0; | |
296 | } | |
297 | ||
298 | ||
299 | const char* g_stratName[] = { "ZSTD_fast ", | |
300 | "ZSTD_dfast ", | |
301 | "ZSTD_greedy ", | |
302 | "ZSTD_lazy ", | |
303 | "ZSTD_lazy2 ", | |
304 | "ZSTD_btlazy2", | |
305 | "ZSTD_btopt ", | |
306 | "ZSTD_btopt2 "}; | |
307 | ||
308 | static void BMK_printWinner(FILE* f, U32 cLevel, BMK_result_t result, ZSTD_compressionParameters params, size_t srcSize) | |
309 | { | |
310 | DISPLAY("\r%79s\r", ""); | |
311 | fprintf(f," {%3u,%3u,%3u,%3u,%3u,%3u, %s }, ", | |
312 | params.windowLog, params.chainLog, params.hashLog, params.searchLog, params.searchLength, | |
313 | params.targetLength, g_stratName[(U32)(params.strategy)]); | |
314 | fprintf(f, | |
315 | "/* level %2u */ /* R:%5.3f at %5.1f MB/s - %5.1f MB/s */\n", | |
316 | cLevel, (double)srcSize / result.cSize, result.cSpeed / 1000000., result.dSpeed / 1000000.); | |
317 | } | |
318 | ||
319 | ||
320 | static double g_cSpeedTarget[NB_LEVELS_TRACKED] = { 0. }; /* NB_LEVELS_TRACKED : checked at main() */ | |
321 | ||
322 | typedef struct { | |
323 | BMK_result_t result; | |
324 | ZSTD_compressionParameters params; | |
325 | } winnerInfo_t; | |
326 | ||
327 | static void BMK_printWinners2(FILE* f, const winnerInfo_t* winners, size_t srcSize) | |
328 | { | |
329 | int cLevel; | |
330 | ||
331 | fprintf(f, "\n /* Proposed configurations : */ \n"); | |
332 | fprintf(f, " /* W, C, H, S, L, T, strat */ \n"); | |
333 | ||
334 | for (cLevel=0; cLevel <= ZSTD_maxCLevel(); cLevel++) | |
335 | BMK_printWinner(f, cLevel, winners[cLevel].result, winners[cLevel].params, srcSize); | |
336 | } | |
337 | ||
338 | ||
339 | static void BMK_printWinners(FILE* f, const winnerInfo_t* winners, size_t srcSize) | |
340 | { | |
341 | fseek(f, 0, SEEK_SET); | |
342 | BMK_printWinners2(f, winners, srcSize); | |
343 | fflush(f); | |
344 | BMK_printWinners2(stdout, winners, srcSize); | |
345 | } | |
346 | ||
347 | static int BMK_seed(winnerInfo_t* winners, const ZSTD_compressionParameters params, | |
348 | const void* srcBuffer, size_t srcSize, | |
349 | ZSTD_CCtx* ctx) | |
350 | { | |
351 | BMK_result_t testResult; | |
352 | int better = 0; | |
353 | int cLevel; | |
354 | ||
355 | BMK_benchParam(&testResult, srcBuffer, srcSize, ctx, params); | |
356 | ||
357 | for (cLevel = 1; cLevel <= ZSTD_maxCLevel(); cLevel++) { | |
358 | if (testResult.cSpeed < g_cSpeedTarget[cLevel]) | |
359 | continue; /* not fast enough for this level */ | |
360 | if (winners[cLevel].result.cSize==0) { | |
361 | /* first solution for this cLevel */ | |
362 | winners[cLevel].result = testResult; | |
363 | winners[cLevel].params = params; | |
364 | BMK_printWinner(stdout, cLevel, testResult, params, srcSize); | |
365 | better = 1; | |
366 | continue; | |
367 | } | |
368 | ||
369 | if ((double)testResult.cSize <= ((double)winners[cLevel].result.cSize * (1. + (0.02 / cLevel))) ) { | |
370 | /* Validate solution is "good enough" */ | |
371 | double W_ratio = (double)srcSize / testResult.cSize; | |
372 | double O_ratio = (double)srcSize / winners[cLevel].result.cSize; | |
373 | double W_ratioNote = log (W_ratio); | |
374 | double O_ratioNote = log (O_ratio); | |
375 | size_t W_DMemUsed = (1 << params.windowLog) + (16 KB); | |
376 | size_t O_DMemUsed = (1 << winners[cLevel].params.windowLog) + (16 KB); | |
377 | double W_DMemUsed_note = W_ratioNote * ( 40 + 9*cLevel) - log((double)W_DMemUsed); | |
378 | double O_DMemUsed_note = O_ratioNote * ( 40 + 9*cLevel) - log((double)O_DMemUsed); | |
379 | ||
380 | size_t W_CMemUsed = (1 << params.windowLog) + ZSTD_estimateCCtxSize(params); | |
381 | size_t O_CMemUsed = (1 << winners[cLevel].params.windowLog) + ZSTD_estimateCCtxSize(winners[cLevel].params); | |
382 | double W_CMemUsed_note = W_ratioNote * ( 50 + 13*cLevel) - log((double)W_CMemUsed); | |
383 | double O_CMemUsed_note = O_ratioNote * ( 50 + 13*cLevel) - log((double)O_CMemUsed); | |
384 | ||
385 | double W_CSpeed_note = W_ratioNote * ( 30 + 10*cLevel) + log(testResult.cSpeed); | |
386 | double O_CSpeed_note = O_ratioNote * ( 30 + 10*cLevel) + log(winners[cLevel].result.cSpeed); | |
387 | ||
388 | double W_DSpeed_note = W_ratioNote * ( 20 + 2*cLevel) + log(testResult.dSpeed); | |
389 | double O_DSpeed_note = O_ratioNote * ( 20 + 2*cLevel) + log(winners[cLevel].result.dSpeed); | |
390 | ||
391 | if (W_DMemUsed_note < O_DMemUsed_note) { | |
392 | /* uses too much Decompression memory for too little benefit */ | |
393 | if (W_ratio > O_ratio) | |
394 | DISPLAY ("Decompression Memory : %5.3f @ %4.1f MB vs %5.3f @ %4.1f MB : not enough for level %i\n", | |
395 | W_ratio, (double)(W_DMemUsed) / 1024 / 1024, | |
396 | O_ratio, (double)(O_DMemUsed) / 1024 / 1024, cLevel); | |
397 | continue; | |
398 | } | |
399 | if (W_CMemUsed_note < O_CMemUsed_note) { | |
400 | /* uses too much memory for compression for too little benefit */ | |
401 | if (W_ratio > O_ratio) | |
402 | DISPLAY ("Compression Memory : %5.3f @ %4.1f MB vs %5.3f @ %4.1f MB : not enough for level %i\n", | |
403 | W_ratio, (double)(W_CMemUsed) / 1024 / 1024, | |
404 | O_ratio, (double)(O_CMemUsed) / 1024 / 1024, cLevel); | |
405 | continue; | |
406 | } | |
407 | if (W_CSpeed_note < O_CSpeed_note ) { | |
408 | /* too large compression speed difference for the compression benefit */ | |
409 | if (W_ratio > O_ratio) | |
410 | DISPLAY ("Compression Speed : %5.3f @ %4.1f MB/s vs %5.3f @ %4.1f MB/s : not enough for level %i\n", | |
411 | W_ratio, testResult.cSpeed / 1000000, | |
412 | O_ratio, winners[cLevel].result.cSpeed / 1000000., cLevel); | |
413 | continue; | |
414 | } | |
415 | if (W_DSpeed_note < O_DSpeed_note ) { | |
416 | /* too large decompression speed difference for the compression benefit */ | |
417 | if (W_ratio > O_ratio) | |
418 | DISPLAY ("Decompression Speed : %5.3f @ %4.1f MB/s vs %5.3f @ %4.1f MB/s : not enough for level %i\n", | |
419 | W_ratio, testResult.dSpeed / 1000000., | |
420 | O_ratio, winners[cLevel].result.dSpeed / 1000000., cLevel); | |
421 | continue; | |
422 | } | |
423 | ||
424 | if (W_ratio < O_ratio) | |
425 | DISPLAY("Solution %4.3f selected over %4.3f at level %i, due to better secondary statistics \n", W_ratio, O_ratio, cLevel); | |
426 | ||
427 | winners[cLevel].result = testResult; | |
428 | winners[cLevel].params = params; | |
429 | BMK_printWinner(stdout, cLevel, testResult, params, srcSize); | |
430 | ||
431 | better = 1; | |
432 | } } | |
433 | ||
434 | return better; | |
435 | } | |
436 | ||
437 | ||
438 | /* nullified useless params, to ensure count stats */ | |
439 | static ZSTD_compressionParameters* sanitizeParams(ZSTD_compressionParameters params) | |
440 | { | |
441 | g_params = params; | |
442 | if (params.strategy == ZSTD_fast) | |
443 | g_params.chainLog = 0, g_params.searchLog = 0; | |
444 | if (params.strategy == ZSTD_dfast) | |
445 | g_params.searchLog = 0; | |
446 | if (params.strategy != ZSTD_btopt && params.strategy != ZSTD_btopt2) | |
447 | g_params.targetLength = 0; | |
448 | return &g_params; | |
449 | } | |
450 | ||
451 | ||
452 | static void paramVariation(ZSTD_compressionParameters* ptr) | |
453 | { | |
454 | ZSTD_compressionParameters p; | |
455 | U32 validated = 0; | |
456 | while (!validated) { | |
457 | U32 nbChanges = (FUZ_rand(&g_rand) & 3) + 1; | |
458 | p = *ptr; | |
459 | for ( ; nbChanges ; nbChanges--) { | |
460 | const U32 changeID = FUZ_rand(&g_rand) % 14; | |
461 | switch(changeID) | |
462 | { | |
463 | case 0: | |
464 | p.chainLog++; break; | |
465 | case 1: | |
466 | p.chainLog--; break; | |
467 | case 2: | |
468 | p.hashLog++; break; | |
469 | case 3: | |
470 | p.hashLog--; break; | |
471 | case 4: | |
472 | p.searchLog++; break; | |
473 | case 5: | |
474 | p.searchLog--; break; | |
475 | case 6: | |
476 | p.windowLog++; break; | |
477 | case 7: | |
478 | p.windowLog--; break; | |
479 | case 8: | |
480 | p.searchLength++; break; | |
481 | case 9: | |
482 | p.searchLength--; break; | |
483 | case 10: | |
484 | p.strategy = (ZSTD_strategy)(((U32)p.strategy)+1); break; | |
485 | case 11: | |
486 | p.strategy = (ZSTD_strategy)(((U32)p.strategy)-1); break; | |
487 | case 12: | |
488 | p.targetLength *= 1 + ((double)(FUZ_rand(&g_rand)&255)) / 256.; break; | |
489 | case 13: | |
490 | p.targetLength /= 1 + ((double)(FUZ_rand(&g_rand)&255)) / 256.; break; | |
491 | } | |
492 | } | |
493 | validated = !ZSTD_isError(ZSTD_checkCParams(p)); | |
494 | } | |
495 | *ptr = p; | |
496 | } | |
497 | ||
498 | ||
499 | #define PARAMTABLELOG 25 | |
500 | #define PARAMTABLESIZE (1<<PARAMTABLELOG) | |
501 | #define PARAMTABLEMASK (PARAMTABLESIZE-1) | |
502 | static BYTE g_alreadyTested[PARAMTABLESIZE] = {0}; /* init to zero */ | |
503 | ||
504 | #define NB_TESTS_PLAYED(p) \ | |
505 | g_alreadyTested[(XXH64(sanitizeParams(p), sizeof(p), 0) >> 3) & PARAMTABLEMASK] | |
506 | ||
507 | ||
508 | #define MAX(a,b) ( (a) > (b) ? (a) : (b) ) | |
509 | ||
510 | static void playAround(FILE* f, winnerInfo_t* winners, | |
511 | ZSTD_compressionParameters params, | |
512 | const void* srcBuffer, size_t srcSize, | |
513 | ZSTD_CCtx* ctx) | |
514 | { | |
515 | int nbVariations = 0; | |
516 | clock_t const clockStart = clock(); | |
517 | ||
518 | while (BMK_clockSpan(clockStart) < g_maxVariationTime) { | |
519 | ZSTD_compressionParameters p = params; | |
520 | ||
521 | if (nbVariations++ > g_maxNbVariations) break; | |
522 | paramVariation(&p); | |
523 | ||
524 | /* exclude faster if already played params */ | |
525 | if (FUZ_rand(&g_rand) & ((1 << NB_TESTS_PLAYED(p))-1)) | |
526 | continue; | |
527 | ||
528 | /* test */ | |
529 | NB_TESTS_PLAYED(p)++; | |
530 | if (!BMK_seed(winners, p, srcBuffer, srcSize, ctx)) continue; | |
531 | ||
532 | /* improvement found => search more */ | |
533 | BMK_printWinners(f, winners, srcSize); | |
534 | playAround(f, winners, p, srcBuffer, srcSize, ctx); | |
535 | } | |
536 | ||
537 | } | |
538 | ||
539 | ||
540 | static ZSTD_compressionParameters randomParams(void) | |
541 | { | |
542 | ZSTD_compressionParameters p; | |
543 | U32 validated = 0; | |
544 | while (!validated) { | |
545 | /* totally random entry */ | |
546 | p.chainLog = FUZ_rand(&g_rand) % (ZSTD_CHAINLOG_MAX+1 - ZSTD_CHAINLOG_MIN) + ZSTD_CHAINLOG_MIN; | |
547 | p.hashLog = FUZ_rand(&g_rand) % (ZSTD_HASHLOG_MAX+1 - ZSTD_HASHLOG_MIN) + ZSTD_HASHLOG_MIN; | |
548 | p.searchLog = FUZ_rand(&g_rand) % (ZSTD_SEARCHLOG_MAX+1 - ZSTD_SEARCHLOG_MIN) + ZSTD_SEARCHLOG_MIN; | |
549 | p.windowLog = FUZ_rand(&g_rand) % (ZSTD_WINDOWLOG_MAX+1 - ZSTD_WINDOWLOG_MIN) + ZSTD_WINDOWLOG_MIN; | |
550 | p.searchLength=FUZ_rand(&g_rand) % (ZSTD_SEARCHLENGTH_MAX+1 - ZSTD_SEARCHLENGTH_MIN) + ZSTD_SEARCHLENGTH_MIN; | |
551 | p.targetLength=FUZ_rand(&g_rand) % (ZSTD_TARGETLENGTH_MAX+1 - ZSTD_TARGETLENGTH_MIN) + ZSTD_TARGETLENGTH_MIN; | |
552 | p.strategy = (ZSTD_strategy) (FUZ_rand(&g_rand) % (ZSTD_btopt2 +1)); | |
553 | validated = !ZSTD_isError(ZSTD_checkCParams(p)); | |
554 | } | |
555 | return p; | |
556 | } | |
557 | ||
558 | static void BMK_selectRandomStart( | |
559 | FILE* f, winnerInfo_t* winners, | |
560 | const void* srcBuffer, size_t srcSize, | |
561 | ZSTD_CCtx* ctx) | |
562 | { | |
563 | U32 const id = (FUZ_rand(&g_rand) % (ZSTD_maxCLevel()+1)); | |
564 | if ((id==0) || (winners[id].params.windowLog==0)) { | |
565 | /* totally random entry */ | |
566 | ZSTD_compressionParameters const p = ZSTD_adjustCParams(randomParams(), srcSize, 0); | |
567 | playAround(f, winners, p, srcBuffer, srcSize, ctx); | |
568 | } | |
569 | else | |
570 | playAround(f, winners, winners[id].params, srcBuffer, srcSize, ctx); | |
571 | } | |
572 | ||
573 | ||
574 | static void BMK_benchMem(void* srcBuffer, size_t srcSize) | |
575 | { | |
576 | ZSTD_CCtx* const ctx = ZSTD_createCCtx(); | |
577 | ZSTD_compressionParameters params; | |
578 | winnerInfo_t winners[NB_LEVELS_TRACKED]; | |
579 | const char* const rfName = "grillResults.txt"; | |
580 | FILE* const f = fopen(rfName, "w"); | |
581 | const size_t blockSize = g_blockSize ? g_blockSize : srcSize; | |
582 | ||
583 | /* init */ | |
584 | if (ctx==NULL) { DISPLAY("ZSTD_createCCtx() failed \n"); exit(1); } | |
585 | memset(winners, 0, sizeof(winners)); | |
586 | if (f==NULL) { DISPLAY("error opening %s \n", rfName); exit(1); } | |
587 | ||
588 | if (g_singleRun) { | |
589 | BMK_result_t testResult; | |
590 | g_params = ZSTD_adjustCParams(g_params, srcSize, 0); | |
591 | BMK_benchParam(&testResult, srcBuffer, srcSize, ctx, g_params); | |
592 | DISPLAY("\n"); | |
593 | return; | |
594 | } | |
595 | ||
596 | if (g_target) | |
597 | g_cSpeedTarget[1] = g_target * 1000000; | |
598 | else { | |
599 | /* baseline config for level 1 */ | |
600 | BMK_result_t testResult; | |
601 | params = ZSTD_getCParams(1, blockSize, 0); | |
602 | BMK_benchParam(&testResult, srcBuffer, srcSize, ctx, params); | |
603 | g_cSpeedTarget[1] = (testResult.cSpeed * 31) / 32; | |
604 | } | |
605 | ||
606 | /* establish speed objectives (relative to level 1) */ | |
607 | { int i; | |
608 | for (i=2; i<=ZSTD_maxCLevel(); i++) | |
609 | g_cSpeedTarget[i] = (g_cSpeedTarget[i-1] * 25) / 32; | |
610 | } | |
611 | ||
612 | /* populate initial solution */ | |
613 | { const int maxSeeds = g_noSeed ? 1 : ZSTD_maxCLevel(); | |
614 | int i; | |
615 | for (i=0; i<=maxSeeds; i++) { | |
616 | params = ZSTD_getCParams(i, blockSize, 0); | |
617 | BMK_seed(winners, params, srcBuffer, srcSize, ctx); | |
618 | } } | |
619 | BMK_printWinners(f, winners, srcSize); | |
620 | ||
621 | /* start tests */ | |
622 | { const time_t grillStart = time(NULL); | |
623 | do { | |
624 | BMK_selectRandomStart(f, winners, srcBuffer, srcSize, ctx); | |
625 | } while (BMK_timeSpan(grillStart) < g_grillDuration_s); | |
626 | } | |
627 | ||
628 | /* end summary */ | |
629 | BMK_printWinners(f, winners, srcSize); | |
630 | DISPLAY("grillParams operations completed \n"); | |
631 | ||
632 | /* clean up*/ | |
633 | fclose(f); | |
634 | ZSTD_freeCCtx(ctx); | |
635 | } | |
636 | ||
637 | ||
638 | static int benchSample(void) | |
639 | { | |
640 | void* origBuff; | |
641 | size_t const benchedSize = sampleSize; | |
642 | const char* const name = "Sample 10MiB"; | |
643 | ||
644 | /* Allocation */ | |
645 | origBuff = malloc(benchedSize); | |
646 | if (!origBuff) { DISPLAY("\nError: not enough memory!\n"); return 12; } | |
647 | ||
648 | /* Fill buffer */ | |
649 | RDG_genBuffer(origBuff, benchedSize, g_compressibility, 0.0, 0); | |
650 | ||
651 | /* bench */ | |
652 | DISPLAY("\r%79s\r", ""); | |
653 | DISPLAY("using %s %i%%: \n", name, (int)(g_compressibility*100)); | |
654 | BMK_benchMem(origBuff, benchedSize); | |
655 | ||
656 | free(origBuff); | |
657 | return 0; | |
658 | } | |
659 | ||
660 | ||
661 | int benchFiles(const char** fileNamesTable, int nbFiles) | |
662 | { | |
663 | int fileIdx=0; | |
664 | ||
665 | /* Loop for each file */ | |
666 | while (fileIdx<nbFiles) { | |
667 | const char* const inFileName = fileNamesTable[fileIdx++]; | |
668 | FILE* const inFile = fopen( inFileName, "rb" ); | |
669 | U64 const inFileSize = UTIL_getFileSize(inFileName); | |
670 | size_t benchedSize; | |
671 | void* origBuff; | |
672 | ||
673 | /* Check file existence */ | |
674 | if (inFile==NULL) { | |
675 | DISPLAY( "Pb opening %s\n", inFileName); | |
676 | return 11; | |
677 | } | |
678 | ||
679 | /* Memory allocation */ | |
680 | benchedSize = BMK_findMaxMem(inFileSize*3) / 3; | |
681 | if ((U64)benchedSize > inFileSize) benchedSize = (size_t)inFileSize; | |
682 | if (benchedSize < inFileSize) | |
683 | DISPLAY("Not enough memory for '%s' full size; testing %i MB only...\n", inFileName, (int)(benchedSize>>20)); | |
684 | origBuff = malloc(benchedSize); | |
685 | if (origBuff==NULL) { | |
686 | DISPLAY("\nError: not enough memory!\n"); | |
687 | fclose(inFile); | |
688 | return 12; | |
689 | } | |
690 | ||
691 | /* Fill input buffer */ | |
692 | DISPLAY("Loading %s... \r", inFileName); | |
693 | { size_t const readSize = fread(origBuff, 1, benchedSize, inFile); | |
694 | fclose(inFile); | |
695 | if(readSize != benchedSize) { | |
696 | DISPLAY("\nError: problem reading file '%s' !! \n", inFileName); | |
697 | free(origBuff); | |
698 | return 13; | |
699 | } } | |
700 | ||
701 | /* bench */ | |
702 | DISPLAY("\r%79s\r", ""); | |
703 | DISPLAY("using %s : \n", inFileName); | |
704 | BMK_benchMem(origBuff, benchedSize); | |
705 | ||
706 | /* clean */ | |
707 | free(origBuff); | |
708 | } | |
709 | ||
710 | return 0; | |
711 | } | |
712 | ||
713 | ||
714 | int optimizeForSize(const char* inFileName, U32 targetSpeed) | |
715 | { | |
716 | FILE* const inFile = fopen( inFileName, "rb" ); | |
717 | U64 const inFileSize = UTIL_getFileSize(inFileName); | |
718 | size_t benchedSize = BMK_findMaxMem(inFileSize*3) / 3; | |
719 | void* origBuff; | |
720 | ||
721 | /* Init */ | |
722 | if (inFile==NULL) { DISPLAY( "Pb opening %s\n", inFileName); return 11; } | |
723 | ||
724 | /* Memory allocation & restrictions */ | |
725 | if ((U64)benchedSize > inFileSize) benchedSize = (size_t)inFileSize; | |
726 | if (benchedSize < inFileSize) | |
727 | DISPLAY("Not enough memory for '%s' full size; testing %i MB only...\n", inFileName, (int)(benchedSize>>20)); | |
728 | ||
729 | /* Alloc */ | |
730 | origBuff = malloc(benchedSize); | |
731 | if(!origBuff) { | |
732 | DISPLAY("\nError: not enough memory!\n"); | |
733 | fclose(inFile); | |
734 | return 12; | |
735 | } | |
736 | ||
737 | /* Fill input buffer */ | |
738 | DISPLAY("Loading %s... \r", inFileName); | |
739 | { size_t const readSize = fread(origBuff, 1, benchedSize, inFile); | |
740 | fclose(inFile); | |
741 | if(readSize != benchedSize) { | |
742 | DISPLAY("\nError: problem reading file '%s' !! \n", inFileName); | |
743 | free(origBuff); | |
744 | return 13; | |
745 | } } | |
746 | ||
747 | /* bench */ | |
748 | DISPLAY("\r%79s\r", ""); | |
749 | DISPLAY("optimizing for %s - limit speed %u MB/s \n", inFileName, targetSpeed); | |
750 | targetSpeed *= 1000; | |
751 | ||
752 | { ZSTD_CCtx* const ctx = ZSTD_createCCtx(); | |
753 | ZSTD_compressionParameters params; | |
754 | winnerInfo_t winner; | |
755 | BMK_result_t candidate; | |
756 | const size_t blockSize = g_blockSize ? g_blockSize : benchedSize; | |
757 | ||
758 | /* init */ | |
759 | if (ctx==NULL) { DISPLAY("\n ZSTD_createCCtx error \n"); free(origBuff); return 14;} | |
760 | memset(&winner, 0, sizeof(winner)); | |
761 | winner.result.cSize = (size_t)(-1); | |
762 | ||
763 | /* find best solution from default params */ | |
764 | { const int maxSeeds = g_noSeed ? 1 : ZSTD_maxCLevel(); | |
765 | int i; | |
766 | for (i=1; i<=maxSeeds; i++) { | |
767 | params = ZSTD_getCParams(i, blockSize, 0); | |
768 | BMK_benchParam(&candidate, origBuff, benchedSize, ctx, params); | |
769 | if (candidate.cSpeed < targetSpeed) | |
770 | break; | |
771 | if ( (candidate.cSize < winner.result.cSize) | |
772 | | ((candidate.cSize == winner.result.cSize) & (candidate.cSpeed > winner.result.cSpeed)) ) | |
773 | { | |
774 | winner.params = params; | |
775 | winner.result = candidate; | |
776 | BMK_printWinner(stdout, i, winner.result, winner.params, benchedSize); | |
777 | } } | |
778 | } | |
779 | BMK_printWinner(stdout, 99, winner.result, winner.params, benchedSize); | |
780 | ||
781 | /* start tests */ | |
782 | { time_t const grillStart = time(NULL); | |
783 | do { | |
784 | params = winner.params; | |
785 | paramVariation(¶ms); | |
786 | if ((FUZ_rand(&g_rand) & 15) == 3) params = randomParams(); | |
787 | ||
788 | /* exclude faster if already played set of params */ | |
789 | if (FUZ_rand(&g_rand) & ((1 << NB_TESTS_PLAYED(params))-1)) continue; | |
790 | ||
791 | /* test */ | |
792 | NB_TESTS_PLAYED(params)++; | |
793 | BMK_benchParam(&candidate, origBuff, benchedSize, ctx, params); | |
794 | ||
795 | /* improvement found => new winner */ | |
796 | if ( (candidate.cSpeed > targetSpeed) | |
797 | & ( (candidate.cSize < winner.result.cSize) | |
798 | | ((candidate.cSize == winner.result.cSize) & (candidate.cSpeed > winner.result.cSpeed)) ) ) | |
799 | { | |
800 | winner.params = params; | |
801 | winner.result = candidate; | |
802 | BMK_printWinner(stdout, 99, winner.result, winner.params, benchedSize); | |
803 | } | |
804 | } while (BMK_timeSpan(grillStart) < g_grillDuration_s); | |
805 | } | |
806 | ||
807 | /* end summary */ | |
808 | BMK_printWinner(stdout, 99, winner.result, winner.params, benchedSize); | |
809 | DISPLAY("grillParams size - optimizer completed \n"); | |
810 | ||
811 | /* clean up*/ | |
812 | ZSTD_freeCCtx(ctx); | |
813 | } | |
814 | ||
815 | free(origBuff); | |
816 | return 0; | |
817 | } | |
818 | ||
819 | ||
820 | static int usage(const char* exename) | |
821 | { | |
822 | DISPLAY( "Usage :\n"); | |
823 | DISPLAY( " %s [arg] file\n", exename); | |
824 | DISPLAY( "Arguments :\n"); | |
825 | DISPLAY( " file : path to the file used as reference (if none, generates a compressible sample)\n"); | |
826 | DISPLAY( " -H/-h : Help (this text + advanced options)\n"); | |
827 | return 0; | |
828 | } | |
829 | ||
830 | static int usage_advanced(void) | |
831 | { | |
832 | DISPLAY( "\nAdvanced options :\n"); | |
833 | DISPLAY( " -T# : set level 1 speed objective \n"); | |
834 | DISPLAY( " -B# : cut input into blocks of size # (default : single block) \n"); | |
835 | DISPLAY( " -i# : iteration loops [1-9](default : %i) \n", NBLOOPS); | |
836 | DISPLAY( " -O# : find Optimized parameters for # target speed (default : 0) \n"); | |
837 | DISPLAY( " -S : Single run \n"); | |
838 | DISPLAY( " -P# : generated sample compressibility (default : %.1f%%) \n", COMPRESSIBILITY_DEFAULT * 100); | |
839 | return 0; | |
840 | } | |
841 | ||
842 | static int badusage(const char* exename) | |
843 | { | |
844 | DISPLAY("Wrong parameters\n"); | |
845 | usage(exename); | |
846 | return 1; | |
847 | } | |
848 | ||
849 | int main(int argc, const char** argv) | |
850 | { | |
851 | int i, | |
852 | filenamesStart=0, | |
853 | result; | |
854 | const char* exename=argv[0]; | |
855 | const char* input_filename=0; | |
856 | U32 optimizer = 0; | |
857 | U32 main_pause = 0; | |
858 | U32 targetSpeed = 0; | |
859 | ||
860 | /* checks */ | |
861 | if (NB_LEVELS_TRACKED <= ZSTD_maxCLevel()) { | |
862 | DISPLAY("Error : NB_LEVELS_TRACKED <= ZSTD_maxCLevel() \n"); | |
863 | exit(1); | |
864 | } | |
865 | ||
866 | /* Welcome message */ | |
867 | DISPLAY(WELCOME_MESSAGE); | |
868 | ||
869 | if (argc<1) { badusage(exename); return 1; } | |
870 | ||
871 | for(i=1; i<argc; i++) { | |
872 | const char* argument = argv[i]; | |
873 | ||
874 | if(!argument) continue; /* Protection if argument empty */ | |
875 | ||
876 | if(!strcmp(argument,"--no-seed")) { g_noSeed = 1; continue; } | |
877 | ||
878 | /* Decode command (note : aggregated commands are allowed) */ | |
879 | if (argument[0]=='-') { | |
880 | argument++; | |
881 | ||
882 | while (argument[0]!=0) { | |
883 | ||
884 | switch(argument[0]) | |
885 | { | |
886 | /* Display help on usage */ | |
887 | case 'h' : | |
888 | case 'H': usage(exename); usage_advanced(); return 0; | |
889 | ||
890 | /* Pause at the end (hidden option) */ | |
891 | case 'p': main_pause = 1; argument++; break; | |
892 | ||
893 | /* Modify Nb Iterations */ | |
894 | case 'i': | |
895 | argument++; | |
896 | if ((argument[0] >='0') & (argument[0] <='9')) | |
897 | g_nbIterations = *argument++ - '0'; | |
898 | break; | |
899 | ||
900 | /* Sample compressibility (when no file provided) */ | |
901 | case 'P': | |
902 | argument++; | |
903 | { U32 proba32 = 0; | |
904 | while ((argument[0]>= '0') & (argument[0]<= '9')) | |
905 | proba32 = (proba32*10) + (*argument++ - '0'); | |
906 | g_compressibility = (double)proba32 / 100.; | |
907 | } | |
908 | break; | |
909 | ||
910 | case 'O': | |
911 | argument++; | |
912 | optimizer=1; | |
913 | targetSpeed = 0; | |
914 | while ((*argument >= '0') & (*argument <= '9')) | |
915 | targetSpeed = (targetSpeed*10) + (*argument++ - '0'); | |
916 | break; | |
917 | ||
918 | /* Run Single conf */ | |
919 | case 'S': | |
920 | g_singleRun = 1; | |
921 | argument++; | |
922 | g_params = ZSTD_getCParams(2, g_blockSize, 0); | |
923 | for ( ; ; ) { | |
924 | switch(*argument) | |
925 | { | |
926 | case 'w': | |
927 | g_params.windowLog = 0; | |
928 | argument++; | |
929 | while ((*argument>= '0') && (*argument<='9')) | |
930 | g_params.windowLog *= 10, g_params.windowLog += *argument++ - '0'; | |
931 | continue; | |
932 | case 'c': | |
933 | g_params.chainLog = 0; | |
934 | argument++; | |
935 | while ((*argument>= '0') && (*argument<='9')) | |
936 | g_params.chainLog *= 10, g_params.chainLog += *argument++ - '0'; | |
937 | continue; | |
938 | case 'h': | |
939 | g_params.hashLog = 0; | |
940 | argument++; | |
941 | while ((*argument>= '0') && (*argument<='9')) | |
942 | g_params.hashLog *= 10, g_params.hashLog += *argument++ - '0'; | |
943 | continue; | |
944 | case 's': | |
945 | g_params.searchLog = 0; | |
946 | argument++; | |
947 | while ((*argument>= '0') && (*argument<='9')) | |
948 | g_params.searchLog *= 10, g_params.searchLog += *argument++ - '0'; | |
949 | continue; | |
950 | case 'l': /* search length */ | |
951 | g_params.searchLength = 0; | |
952 | argument++; | |
953 | while ((*argument>= '0') && (*argument<='9')) | |
954 | g_params.searchLength *= 10, g_params.searchLength += *argument++ - '0'; | |
955 | continue; | |
956 | case 't': /* target length */ | |
957 | g_params.targetLength = 0; | |
958 | argument++; | |
959 | while ((*argument>= '0') && (*argument<='9')) | |
960 | g_params.targetLength *= 10, g_params.targetLength += *argument++ - '0'; | |
961 | continue; | |
962 | case 'S': /* strategy */ | |
963 | argument++; | |
964 | while ((*argument>= '0') && (*argument<='9')) | |
965 | g_params.strategy = (ZSTD_strategy)(*argument++ - '0'); | |
966 | continue; | |
967 | case 'L': | |
968 | { int cLevel = 0; | |
969 | argument++; | |
970 | while ((*argument>= '0') && (*argument<='9')) | |
971 | cLevel *= 10, cLevel += *argument++ - '0'; | |
972 | g_params = ZSTD_getCParams(cLevel, g_blockSize, 0); | |
973 | continue; | |
974 | } | |
975 | default : ; | |
976 | } | |
977 | break; | |
978 | } | |
979 | break; | |
980 | ||
981 | /* target level1 speed objective, in MB/s */ | |
982 | case 'T': | |
983 | argument++; | |
984 | g_target = 0; | |
985 | while ((*argument >= '0') && (*argument <= '9')) | |
986 | g_target = (g_target*10) + (*argument++ - '0'); | |
987 | break; | |
988 | ||
989 | /* cut input into blocks */ | |
990 | case 'B': | |
991 | g_blockSize = 0; | |
992 | argument++; | |
993 | while ((*argument >='0') & (*argument <='9')) | |
994 | g_blockSize = (g_blockSize*10) + (*argument++ - '0'); | |
995 | if (*argument=='K') g_blockSize<<=10, argument++; /* allows using KB notation */ | |
996 | if (*argument=='M') g_blockSize<<=20, argument++; | |
997 | if (*argument=='B') argument++; | |
998 | DISPLAY("using %u KB block size \n", g_blockSize>>10); | |
999 | break; | |
1000 | ||
1001 | /* Unknown command */ | |
1002 | default : return badusage(exename); | |
1003 | } | |
1004 | } | |
1005 | continue; | |
1006 | } /* if (argument[0]=='-') */ | |
1007 | ||
1008 | /* first provided filename is input */ | |
1009 | if (!input_filename) { input_filename=argument; filenamesStart=i; continue; } | |
1010 | } | |
1011 | ||
1012 | if (filenamesStart==0) | |
1013 | result = benchSample(); | |
1014 | else { | |
1015 | if (optimizer) | |
1016 | result = optimizeForSize(input_filename, targetSpeed); | |
1017 | else | |
1018 | result = benchFiles(argv+filenamesStart, argc-filenamesStart); | |
1019 | } | |
1020 | ||
1021 | if (main_pause) { int unused; printf("press enter...\n"); unused = getchar(); (void)unused; } | |
1022 | ||
1023 | return result; | |
1024 | } |