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11fdf7f2 | 1 | /* |
7c673cae FG |
2 | * Copyright (c) 2016-present, Przemyslaw Skibinski, Yann Collet, Facebook, Inc. |
3 | * All rights reserved. | |
4 | * | |
11fdf7f2 TL |
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. | |
7c673cae FG |
9 | */ |
10 | ||
11 | #ifndef UTIL_H_MODULE | |
12 | #define UTIL_H_MODULE | |
13 | ||
14 | #if defined (__cplusplus) | |
15 | extern "C" { | |
16 | #endif | |
17 | ||
7c673cae FG |
18 | |
19 | ||
20 | /*-**************************************** | |
21 | * Dependencies | |
22 | ******************************************/ | |
11fdf7f2 TL |
23 | #include "platform.h" /* PLATFORM_POSIX_VERSION */ |
24 | #include <stdlib.h> /* malloc */ | |
25 | #include <stddef.h> /* size_t, ptrdiff_t */ | |
26 | #include <stdio.h> /* fprintf */ | |
27 | #include <string.h> /* strncmp */ | |
28 | #include <sys/types.h> /* stat, utime */ | |
29 | #include <sys/stat.h> /* stat */ | |
7c673cae | 30 | #if defined(_MSC_VER) |
11fdf7f2 TL |
31 | # include <sys/utime.h> /* utime */ |
32 | # include <io.h> /* _chmod */ | |
7c673cae FG |
33 | #else |
34 | # include <unistd.h> /* chown, stat */ | |
35 | # include <utime.h> /* utime */ | |
36 | #endif | |
11fdf7f2 | 37 | #include <time.h> /* time */ |
7c673cae | 38 | #include <errno.h> |
11fdf7f2 TL |
39 | #include "mem.h" /* U32, U64 */ |
40 | ||
41 | ||
42 | /* ************************************************************ | |
43 | * Avoid fseek()'s 2GiB barrier with MSVC, MacOS, *BSD, MinGW | |
44 | ***************************************************************/ | |
45 | #if defined(_MSC_VER) && (_MSC_VER >= 1400) | |
46 | # define UTIL_fseek _fseeki64 | |
47 | #elif !defined(__64BIT__) && (PLATFORM_POSIX_VERSION >= 200112L) /* No point defining Large file for 64 bit */ | |
48 | # define UTIL_fseek fseeko | |
49 | #elif defined(__MINGW32__) && defined(__MSVCRT__) && !defined(__STRICT_ANSI__) && !defined(__NO_MINGW_LFS) | |
50 | # define UTIL_fseek fseeko64 | |
7c673cae | 51 | #else |
11fdf7f2 | 52 | # define UTIL_fseek fseek |
7c673cae FG |
53 | #endif |
54 | ||
55 | ||
56 | /*-**************************************** | |
57 | * Sleep functions: Windows - Posix - others | |
58 | ******************************************/ | |
59 | #if defined(_WIN32) | |
60 | # include <windows.h> | |
11fdf7f2 | 61 | # define SET_REALTIME_PRIORITY SetPriorityClass(GetCurrentProcess(), REALTIME_PRIORITY_CLASS) |
7c673cae FG |
62 | # define UTIL_sleep(s) Sleep(1000*s) |
63 | # define UTIL_sleepMilli(milli) Sleep(milli) | |
11fdf7f2 | 64 | #elif PLATFORM_POSIX_VERSION >= 0 /* Unix-like operating system */ |
7c673cae FG |
65 | # include <unistd.h> |
66 | # include <sys/resource.h> /* setpriority */ | |
67 | # include <time.h> /* clock_t, nanosleep, clock, CLOCKS_PER_SEC */ | |
68 | # if defined(PRIO_PROCESS) | |
11fdf7f2 | 69 | # define SET_REALTIME_PRIORITY setpriority(PRIO_PROCESS, 0, -20) |
7c673cae | 70 | # else |
11fdf7f2 | 71 | # define SET_REALTIME_PRIORITY /* disabled */ |
7c673cae FG |
72 | # endif |
73 | # define UTIL_sleep(s) sleep(s) | |
11fdf7f2 | 74 | # if (defined(__linux__) && (PLATFORM_POSIX_VERSION >= 199309L)) || (PLATFORM_POSIX_VERSION >= 200112L) /* nanosleep requires POSIX.1-2001 */ |
7c673cae FG |
75 | # define UTIL_sleepMilli(milli) { struct timespec t; t.tv_sec=0; t.tv_nsec=milli*1000000ULL; nanosleep(&t, NULL); } |
76 | # else | |
77 | # define UTIL_sleepMilli(milli) /* disabled */ | |
78 | # endif | |
79 | #else | |
11fdf7f2 | 80 | # define SET_REALTIME_PRIORITY /* disabled */ |
7c673cae FG |
81 | # define UTIL_sleep(s) /* disabled */ |
82 | # define UTIL_sleepMilli(milli) /* disabled */ | |
83 | #endif | |
84 | ||
85 | ||
11fdf7f2 TL |
86 | /* ************************************* |
87 | * Constants | |
88 | ***************************************/ | |
89 | #define LIST_SIZE_INCREASE (8*1024) | |
90 | ||
91 | ||
7c673cae | 92 | /*-**************************************** |
11fdf7f2 | 93 | * Compiler specifics |
7c673cae | 94 | ******************************************/ |
11fdf7f2 TL |
95 | #if defined(__INTEL_COMPILER) |
96 | # pragma warning(disable : 177) /* disable: message #177: function was declared but never referenced, useful with UTIL_STATIC */ | |
97 | #endif | |
98 | #if defined(__GNUC__) | |
99 | # define UTIL_STATIC static __attribute__((unused)) | |
100 | #elif defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */) | |
101 | # define UTIL_STATIC static inline | |
102 | #elif defined(_MSC_VER) | |
103 | # define UTIL_STATIC static __inline | |
7c673cae | 104 | #else |
11fdf7f2 TL |
105 | # define UTIL_STATIC static /* this version may generate warnings for unused static functions; disable the relevant warning */ |
106 | #endif | |
107 | ||
108 | ||
109 | /*-**************************************** | |
110 | * Console log | |
111 | ******************************************/ | |
112 | static int g_utilDisplayLevel; | |
113 | #define UTIL_DISPLAY(...) fprintf(stderr, __VA_ARGS__) | |
114 | #define UTIL_DISPLAYLEVEL(l, ...) { if (g_utilDisplayLevel>=l) { UTIL_DISPLAY(__VA_ARGS__); } } | |
115 | ||
116 | ||
117 | /*-**************************************** | |
118 | * Time functions | |
119 | ******************************************/ | |
120 | #if defined(_WIN32) /* Windows */ | |
121 | typedef LARGE_INTEGER UTIL_time_t; | |
122 | UTIL_STATIC UTIL_time_t UTIL_getTime(void) { UTIL_time_t x; QueryPerformanceCounter(&x); return x; } | |
123 | UTIL_STATIC U64 UTIL_getSpanTimeMicro(UTIL_time_t clockStart, UTIL_time_t clockEnd) | |
124 | { | |
125 | static LARGE_INTEGER ticksPerSecond; | |
126 | static int init = 0; | |
127 | if (!init) { | |
128 | if (!QueryPerformanceFrequency(&ticksPerSecond)) | |
129 | UTIL_DISPLAYLEVEL(1, "ERROR: QueryPerformanceFrequency() failure\n"); | |
130 | init = 1; | |
131 | } | |
132 | return 1000000ULL*(clockEnd.QuadPart - clockStart.QuadPart)/ticksPerSecond.QuadPart; | |
133 | } | |
134 | UTIL_STATIC U64 UTIL_getSpanTimeNano(UTIL_time_t clockStart, UTIL_time_t clockEnd) | |
135 | { | |
136 | static LARGE_INTEGER ticksPerSecond; | |
137 | static int init = 0; | |
138 | if (!init) { | |
139 | if (!QueryPerformanceFrequency(&ticksPerSecond)) | |
140 | UTIL_DISPLAYLEVEL(1, "ERROR: QueryPerformanceFrequency() failure\n"); | |
141 | init = 1; | |
142 | } | |
143 | return 1000000000ULL*(clockEnd.QuadPart - clockStart.QuadPart)/ticksPerSecond.QuadPart; | |
144 | } | |
145 | #elif defined(__APPLE__) && defined(__MACH__) | |
146 | #include <mach/mach_time.h> | |
147 | typedef U64 UTIL_time_t; | |
148 | UTIL_STATIC UTIL_time_t UTIL_getTime(void) { return mach_absolute_time(); } | |
149 | UTIL_STATIC U64 UTIL_getSpanTimeMicro(UTIL_time_t clockStart, UTIL_time_t clockEnd) | |
150 | { | |
151 | static mach_timebase_info_data_t rate; | |
152 | static int init = 0; | |
153 | if (!init) { | |
154 | mach_timebase_info(&rate); | |
155 | init = 1; | |
156 | } | |
157 | return (((clockEnd - clockStart) * (U64)rate.numer) / ((U64)rate.denom))/1000ULL; | |
158 | } | |
159 | UTIL_STATIC U64 UTIL_getSpanTimeNano(UTIL_time_t clockStart, UTIL_time_t clockEnd) | |
160 | { | |
161 | static mach_timebase_info_data_t rate; | |
162 | static int init = 0; | |
163 | if (!init) { | |
164 | mach_timebase_info(&rate); | |
165 | init = 1; | |
166 | } | |
167 | return ((clockEnd - clockStart) * (U64)rate.numer) / ((U64)rate.denom); | |
168 | } | |
169 | #elif (PLATFORM_POSIX_VERSION >= 200112L) | |
170 | #include <time.h> | |
171 | typedef struct timespec UTIL_freq_t; | |
172 | typedef struct timespec UTIL_time_t; | |
173 | UTIL_STATIC UTIL_time_t UTIL_getTime(void) | |
174 | { | |
175 | UTIL_time_t time; | |
176 | if (clock_gettime(CLOCK_MONOTONIC, &time)) | |
177 | UTIL_DISPLAYLEVEL(1, "ERROR: Failed to get time\n"); /* we could also exit() */ | |
178 | return time; | |
179 | } | |
180 | UTIL_STATIC UTIL_time_t UTIL_getSpanTime(UTIL_time_t begin, UTIL_time_t end) | |
181 | { | |
182 | UTIL_time_t diff; | |
183 | if (end.tv_nsec < begin.tv_nsec) { | |
184 | diff.tv_sec = (end.tv_sec - 1) - begin.tv_sec; | |
185 | diff.tv_nsec = (end.tv_nsec + 1000000000ULL) - begin.tv_nsec; | |
186 | } else { | |
187 | diff.tv_sec = end.tv_sec - begin.tv_sec; | |
188 | diff.tv_nsec = end.tv_nsec - begin.tv_nsec; | |
189 | } | |
190 | return diff; | |
191 | } | |
192 | UTIL_STATIC U64 UTIL_getSpanTimeMicro(UTIL_time_t begin, UTIL_time_t end) | |
193 | { | |
194 | UTIL_time_t const diff = UTIL_getSpanTime(begin, end); | |
195 | U64 micro = 0; | |
196 | micro += 1000000ULL * diff.tv_sec; | |
197 | micro += diff.tv_nsec / 1000ULL; | |
198 | return micro; | |
199 | } | |
200 | UTIL_STATIC U64 UTIL_getSpanTimeNano(UTIL_time_t begin, UTIL_time_t end) | |
201 | { | |
202 | UTIL_time_t const diff = UTIL_getSpanTime(begin, end); | |
203 | U64 nano = 0; | |
204 | nano += 1000000000ULL * diff.tv_sec; | |
205 | nano += diff.tv_nsec; | |
206 | return nano; | |
207 | } | |
208 | #else /* relies on standard C (note : clock_t measurements can be wrong when using multi-threading) */ | |
209 | typedef clock_t UTIL_time_t; | |
210 | UTIL_STATIC UTIL_time_t UTIL_getTime(void) { return clock(); } | |
211 | UTIL_STATIC U64 UTIL_getSpanTimeMicro(UTIL_time_t clockStart, UTIL_time_t clockEnd) { return 1000000ULL * (clockEnd - clockStart) / CLOCKS_PER_SEC; } | |
212 | UTIL_STATIC U64 UTIL_getSpanTimeNano(UTIL_time_t clockStart, UTIL_time_t clockEnd) { return 1000000000ULL * (clockEnd - clockStart) / CLOCKS_PER_SEC; } | |
7c673cae FG |
213 | #endif |
214 | ||
215 | ||
216 | /* returns time span in microseconds */ | |
11fdf7f2 | 217 | UTIL_STATIC U64 UTIL_clockSpanMicro( UTIL_time_t clockStart ) |
7c673cae | 218 | { |
11fdf7f2 TL |
219 | UTIL_time_t const clockEnd = UTIL_getTime(); |
220 | return UTIL_getSpanTimeMicro(clockStart, clockEnd); | |
7c673cae FG |
221 | } |
222 | ||
223 | ||
11fdf7f2 | 224 | UTIL_STATIC void UTIL_waitForNextTick(void) |
7c673cae | 225 | { |
11fdf7f2 TL |
226 | UTIL_time_t const clockStart = UTIL_getTime(); |
227 | UTIL_time_t clockEnd; | |
7c673cae | 228 | do { |
11fdf7f2 TL |
229 | clockEnd = UTIL_getTime(); |
230 | } while (UTIL_getSpanTimeNano(clockStart, clockEnd) == 0); | |
7c673cae FG |
231 | } |
232 | ||
233 | ||
234 | ||
235 | /*-**************************************** | |
236 | * File functions | |
237 | ******************************************/ | |
238 | #if defined(_MSC_VER) | |
11fdf7f2 TL |
239 | #define chmod _chmod |
240 | typedef struct __stat64 stat_t; | |
7c673cae FG |
241 | #else |
242 | typedef struct stat stat_t; | |
243 | #endif | |
244 | ||
245 | ||
246 | UTIL_STATIC int UTIL_setFileStat(const char *filename, stat_t *statbuf) | |
247 | { | |
248 | int res = 0; | |
249 | struct utimbuf timebuf; | |
250 | ||
11fdf7f2 TL |
251 | timebuf.actime = time(NULL); |
252 | timebuf.modtime = statbuf->st_mtime; | |
253 | res += utime(filename, &timebuf); /* set access and modification times */ | |
7c673cae FG |
254 | |
255 | #if !defined(_WIN32) | |
256 | res += chown(filename, statbuf->st_uid, statbuf->st_gid); /* Copy ownership */ | |
257 | #endif | |
258 | ||
259 | res += chmod(filename, statbuf->st_mode & 07777); /* Copy file permissions */ | |
260 | ||
261 | errno = 0; | |
262 | return -res; /* number of errors is returned */ | |
263 | } | |
264 | ||
265 | ||
266 | UTIL_STATIC int UTIL_getFileStat(const char* infilename, stat_t *statbuf) | |
267 | { | |
268 | int r; | |
269 | #if defined(_MSC_VER) | |
270 | r = _stat64(infilename, statbuf); | |
271 | if (r || !(statbuf->st_mode & S_IFREG)) return 0; /* No good... */ | |
272 | #else | |
273 | r = stat(infilename, statbuf); | |
274 | if (r || !S_ISREG(statbuf->st_mode)) return 0; /* No good... */ | |
275 | #endif | |
276 | return 1; | |
277 | } | |
278 | ||
279 | ||
11fdf7f2 TL |
280 | UTIL_STATIC int UTIL_isRegularFile(const char* infilename) |
281 | { | |
282 | stat_t statbuf; | |
283 | return UTIL_getFileStat(infilename, &statbuf); /* Only need to know whether it is a regular file */ | |
284 | } | |
285 | ||
286 | ||
287 | UTIL_STATIC U32 UTIL_isDirectory(const char* infilename) | |
7c673cae FG |
288 | { |
289 | int r; | |
11fdf7f2 | 290 | stat_t statbuf; |
7c673cae | 291 | #if defined(_MSC_VER) |
7c673cae | 292 | r = _stat64(infilename, &statbuf); |
11fdf7f2 | 293 | if (!r && (statbuf.st_mode & _S_IFDIR)) return 1; |
7c673cae | 294 | #else |
7c673cae | 295 | r = stat(infilename, &statbuf); |
11fdf7f2 | 296 | if (!r && S_ISDIR(statbuf.st_mode)) return 1; |
7c673cae | 297 | #endif |
11fdf7f2 | 298 | return 0; |
7c673cae FG |
299 | } |
300 | ||
11fdf7f2 | 301 | UTIL_STATIC U32 UTIL_isLink(const char* infilename) |
7c673cae | 302 | { |
11fdf7f2 TL |
303 | #if defined(_WIN32) |
304 | /* no symlinks on windows */ | |
305 | (void)infilename; | |
306 | #else | |
307 | int r; | |
308 | stat_t statbuf; | |
309 | r = lstat(infilename, &statbuf); | |
310 | if (!r && S_ISLNK(statbuf.st_mode)) return 1; | |
311 | #endif | |
312 | return 0; | |
7c673cae FG |
313 | } |
314 | ||
315 | ||
11fdf7f2 | 316 | UTIL_STATIC U64 UTIL_getFileSize(const char* infilename) |
7c673cae FG |
317 | { |
318 | int r; | |
319 | #if defined(_MSC_VER) | |
11fdf7f2 | 320 | struct __stat64 statbuf; |
7c673cae FG |
321 | r = _stat64(infilename, &statbuf); |
322 | if (r || !(statbuf.st_mode & S_IFREG)) return 0; /* No good... */ | |
11fdf7f2 TL |
323 | #elif defined(__MINGW32__) && defined (__MSVCRT__) |
324 | struct _stati64 statbuf; | |
325 | r = _stati64(infilename, &statbuf); | |
326 | if (r || !(statbuf.st_mode & S_IFREG)) return 0; /* No good... */ | |
7c673cae FG |
327 | #else |
328 | struct stat statbuf; | |
329 | r = stat(infilename, &statbuf); | |
330 | if (r || !S_ISREG(statbuf.st_mode)) return 0; /* No good... */ | |
331 | #endif | |
11fdf7f2 | 332 | return (U64)statbuf.st_size; |
7c673cae FG |
333 | } |
334 | ||
335 | ||
11fdf7f2 | 336 | UTIL_STATIC U64 UTIL_getTotalFileSize(const char** fileNamesTable, unsigned nbFiles) |
7c673cae | 337 | { |
11fdf7f2 TL |
338 | U64 total = 0; |
339 | unsigned n; | |
340 | for (n=0; n<nbFiles; n++) | |
341 | total += UTIL_getFileSize(fileNamesTable[n]); | |
342 | return total; | |
7c673cae FG |
343 | } |
344 | ||
11fdf7f2 | 345 | |
7c673cae FG |
346 | /* |
347 | * A modified version of realloc(). | |
348 | * If UTIL_realloc() fails the original block is freed. | |
349 | */ | |
350 | UTIL_STATIC void *UTIL_realloc(void *ptr, size_t size) | |
351 | { | |
352 | void *newptr = realloc(ptr, size); | |
353 | if (newptr) return newptr; | |
354 | free(ptr); | |
355 | return NULL; | |
356 | } | |
357 | ||
7c673cae FG |
358 | #ifdef _WIN32 |
359 | # define UTIL_HAS_CREATEFILELIST | |
360 | ||
11fdf7f2 | 361 | UTIL_STATIC int UTIL_prepareFileList(const char *dirName, char** bufStart, size_t* pos, char** bufEnd, int followLinks) |
7c673cae FG |
362 | { |
363 | char* path; | |
364 | int dirLength, fnameLength, pathLength, nbFiles = 0; | |
11fdf7f2 | 365 | WIN32_FIND_DATAA cFile; |
7c673cae FG |
366 | HANDLE hFile; |
367 | ||
368 | dirLength = (int)strlen(dirName); | |
369 | path = (char*) malloc(dirLength + 3); | |
370 | if (!path) return 0; | |
371 | ||
372 | memcpy(path, dirName, dirLength); | |
373 | path[dirLength] = '\\'; | |
374 | path[dirLength+1] = '*'; | |
375 | path[dirLength+2] = 0; | |
376 | ||
11fdf7f2 | 377 | hFile=FindFirstFileA(path, &cFile); |
7c673cae | 378 | if (hFile == INVALID_HANDLE_VALUE) { |
11fdf7f2 | 379 | UTIL_DISPLAYLEVEL(1, "Cannot open directory '%s'\n", dirName); |
7c673cae FG |
380 | return 0; |
381 | } | |
382 | free(path); | |
383 | ||
384 | do { | |
385 | fnameLength = (int)strlen(cFile.cFileName); | |
386 | path = (char*) malloc(dirLength + fnameLength + 2); | |
387 | if (!path) { FindClose(hFile); return 0; } | |
388 | memcpy(path, dirName, dirLength); | |
389 | path[dirLength] = '\\'; | |
390 | memcpy(path+dirLength+1, cFile.cFileName, fnameLength); | |
391 | pathLength = dirLength+1+fnameLength; | |
392 | path[pathLength] = 0; | |
393 | if (cFile.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) { | |
394 | if (strcmp (cFile.cFileName, "..") == 0 || | |
395 | strcmp (cFile.cFileName, ".") == 0) continue; | |
396 | ||
11fdf7f2 | 397 | nbFiles += UTIL_prepareFileList(path, bufStart, pos, bufEnd, followLinks); /* Recursively call "UTIL_prepareFileList" with the new path. */ |
7c673cae FG |
398 | if (*bufStart == NULL) { free(path); FindClose(hFile); return 0; } |
399 | } | |
400 | else if ((cFile.dwFileAttributes & FILE_ATTRIBUTE_NORMAL) || (cFile.dwFileAttributes & FILE_ATTRIBUTE_ARCHIVE) || (cFile.dwFileAttributes & FILE_ATTRIBUTE_COMPRESSED)) { | |
401 | if (*bufStart + *pos + pathLength >= *bufEnd) { | |
402 | ptrdiff_t newListSize = (*bufEnd - *bufStart) + LIST_SIZE_INCREASE; | |
403 | *bufStart = (char*)UTIL_realloc(*bufStart, newListSize); | |
404 | *bufEnd = *bufStart + newListSize; | |
405 | if (*bufStart == NULL) { free(path); FindClose(hFile); return 0; } | |
406 | } | |
407 | if (*bufStart + *pos + pathLength < *bufEnd) { | |
408 | strncpy(*bufStart + *pos, path, *bufEnd - (*bufStart + *pos)); | |
409 | *pos += pathLength + 1; | |
410 | nbFiles++; | |
411 | } | |
412 | } | |
413 | free(path); | |
11fdf7f2 | 414 | } while (FindNextFileA(hFile, &cFile)); |
7c673cae FG |
415 | |
416 | FindClose(hFile); | |
417 | return nbFiles; | |
418 | } | |
419 | ||
11fdf7f2 | 420 | #elif defined(__linux__) || (PLATFORM_POSIX_VERSION >= 200112L) /* opendir, readdir require POSIX.1-2001 */ |
7c673cae FG |
421 | # define UTIL_HAS_CREATEFILELIST |
422 | # include <dirent.h> /* opendir, readdir */ | |
11fdf7f2 | 423 | # include <string.h> /* strerror, memcpy */ |
7c673cae | 424 | |
11fdf7f2 | 425 | UTIL_STATIC int UTIL_prepareFileList(const char *dirName, char** bufStart, size_t* pos, char** bufEnd, int followLinks) |
7c673cae FG |
426 | { |
427 | DIR *dir; | |
428 | struct dirent *entry; | |
429 | char* path; | |
430 | int dirLength, fnameLength, pathLength, nbFiles = 0; | |
431 | ||
432 | if (!(dir = opendir(dirName))) { | |
11fdf7f2 | 433 | UTIL_DISPLAYLEVEL(1, "Cannot open directory '%s': %s\n", dirName, strerror(errno)); |
7c673cae FG |
434 | return 0; |
435 | } | |
436 | ||
437 | dirLength = (int)strlen(dirName); | |
438 | errno = 0; | |
439 | while ((entry = readdir(dir)) != NULL) { | |
440 | if (strcmp (entry->d_name, "..") == 0 || | |
441 | strcmp (entry->d_name, ".") == 0) continue; | |
442 | fnameLength = (int)strlen(entry->d_name); | |
443 | path = (char*) malloc(dirLength + fnameLength + 2); | |
444 | if (!path) { closedir(dir); return 0; } | |
445 | memcpy(path, dirName, dirLength); | |
11fdf7f2 | 446 | |
7c673cae FG |
447 | path[dirLength] = '/'; |
448 | memcpy(path+dirLength+1, entry->d_name, fnameLength); | |
449 | pathLength = dirLength+1+fnameLength; | |
450 | path[pathLength] = 0; | |
451 | ||
11fdf7f2 TL |
452 | if (!followLinks && UTIL_isLink(path)) { |
453 | UTIL_DISPLAYLEVEL(2, "Warning : %s is a symbolic link, ignoring\n", path); | |
454 | continue; | |
455 | } | |
456 | ||
7c673cae | 457 | if (UTIL_isDirectory(path)) { |
11fdf7f2 | 458 | nbFiles += UTIL_prepareFileList(path, bufStart, pos, bufEnd, followLinks); /* Recursively call "UTIL_prepareFileList" with the new path. */ |
7c673cae FG |
459 | if (*bufStart == NULL) { free(path); closedir(dir); return 0; } |
460 | } else { | |
461 | if (*bufStart + *pos + pathLength >= *bufEnd) { | |
462 | ptrdiff_t newListSize = (*bufEnd - *bufStart) + LIST_SIZE_INCREASE; | |
463 | *bufStart = (char*)UTIL_realloc(*bufStart, newListSize); | |
464 | *bufEnd = *bufStart + newListSize; | |
465 | if (*bufStart == NULL) { free(path); closedir(dir); return 0; } | |
466 | } | |
467 | if (*bufStart + *pos + pathLength < *bufEnd) { | |
468 | strncpy(*bufStart + *pos, path, *bufEnd - (*bufStart + *pos)); | |
469 | *pos += pathLength + 1; | |
470 | nbFiles++; | |
471 | } | |
472 | } | |
473 | free(path); | |
474 | errno = 0; /* clear errno after UTIL_isDirectory, UTIL_prepareFileList */ | |
475 | } | |
476 | ||
477 | if (errno != 0) { | |
11fdf7f2 | 478 | UTIL_DISPLAYLEVEL(1, "readdir(%s) error: %s\n", dirName, strerror(errno)); |
7c673cae FG |
479 | free(*bufStart); |
480 | *bufStart = NULL; | |
481 | } | |
482 | closedir(dir); | |
483 | return nbFiles; | |
484 | } | |
485 | ||
486 | #else | |
487 | ||
11fdf7f2 | 488 | UTIL_STATIC int UTIL_prepareFileList(const char *dirName, char** bufStart, size_t* pos, char** bufEnd, int followLinks) |
7c673cae FG |
489 | { |
490 | (void)bufStart; (void)bufEnd; (void)pos; | |
11fdf7f2 | 491 | UTIL_DISPLAYLEVEL(1, "Directory %s ignored (compiled without _WIN32 or _POSIX_C_SOURCE)\n", dirName); |
7c673cae FG |
492 | return 0; |
493 | } | |
494 | ||
495 | #endif /* #ifdef _WIN32 */ | |
496 | ||
497 | /* | |
498 | * UTIL_createFileList - takes a list of files and directories (params: inputNames, inputNamesNb), scans directories, | |
499 | * and returns a new list of files (params: return value, allocatedBuffer, allocatedNamesNb). | |
500 | * After finishing usage of the list the structures should be freed with UTIL_freeFileList(params: return value, allocatedBuffer) | |
501 | * In case of error UTIL_createFileList returns NULL and UTIL_freeFileList should not be called. | |
502 | */ | |
11fdf7f2 | 503 | UTIL_STATIC const char** UTIL_createFileList(const char **inputNames, unsigned inputNamesNb, char** allocatedBuffer, unsigned* allocatedNamesNb, int followLinks) |
7c673cae FG |
504 | { |
505 | size_t pos; | |
506 | unsigned i, nbFiles; | |
507 | char* buf = (char*)malloc(LIST_SIZE_INCREASE); | |
508 | char* bufend = buf + LIST_SIZE_INCREASE; | |
509 | const char** fileTable; | |
510 | ||
511 | if (!buf) return NULL; | |
512 | ||
513 | for (i=0, pos=0, nbFiles=0; i<inputNamesNb; i++) { | |
514 | if (!UTIL_isDirectory(inputNames[i])) { | |
515 | size_t const len = strlen(inputNames[i]); | |
516 | if (buf + pos + len >= bufend) { | |
517 | ptrdiff_t newListSize = (bufend - buf) + LIST_SIZE_INCREASE; | |
518 | buf = (char*)UTIL_realloc(buf, newListSize); | |
519 | bufend = buf + newListSize; | |
520 | if (!buf) return NULL; | |
521 | } | |
522 | if (buf + pos + len < bufend) { | |
523 | strncpy(buf + pos, inputNames[i], bufend - (buf + pos)); | |
524 | pos += len + 1; | |
525 | nbFiles++; | |
526 | } | |
527 | } else { | |
11fdf7f2 | 528 | nbFiles += UTIL_prepareFileList(inputNames[i], &buf, &pos, &bufend, followLinks); |
7c673cae FG |
529 | if (buf == NULL) return NULL; |
530 | } } | |
531 | ||
532 | if (nbFiles == 0) { free(buf); return NULL; } | |
533 | ||
534 | fileTable = (const char**)malloc((nbFiles+1) * sizeof(const char*)); | |
535 | if (!fileTable) { free(buf); return NULL; } | |
536 | ||
537 | for (i=0, pos=0; i<nbFiles; i++) { | |
538 | fileTable[i] = buf + pos; | |
539 | pos += strlen(fileTable[i]) + 1; | |
540 | } | |
541 | ||
542 | if (buf + pos > bufend) { free(buf); free((void*)fileTable); return NULL; } | |
543 | ||
544 | *allocatedBuffer = buf; | |
545 | *allocatedNamesNb = nbFiles; | |
546 | ||
547 | return fileTable; | |
548 | } | |
549 | ||
550 | ||
551 | UTIL_STATIC void UTIL_freeFileList(const char** filenameTable, char* allocatedBuffer) | |
552 | { | |
553 | if (allocatedBuffer) free(allocatedBuffer); | |
554 | if (filenameTable) free((void*)filenameTable); | |
555 | } | |
556 | ||
11fdf7f2 TL |
557 | /* count the number of physical cores */ |
558 | #if defined(_WIN32) || defined(WIN32) | |
559 | ||
560 | #include <windows.h> | |
561 | ||
562 | typedef BOOL(WINAPI* LPFN_GLPI)(PSYSTEM_LOGICAL_PROCESSOR_INFORMATION, PDWORD); | |
563 | ||
564 | UTIL_STATIC int UTIL_countPhysicalCores(void) | |
565 | { | |
566 | static int numPhysicalCores = 0; | |
567 | if (numPhysicalCores != 0) return numPhysicalCores; | |
568 | ||
569 | { LPFN_GLPI glpi; | |
570 | BOOL done = FALSE; | |
571 | PSYSTEM_LOGICAL_PROCESSOR_INFORMATION buffer = NULL; | |
572 | PSYSTEM_LOGICAL_PROCESSOR_INFORMATION ptr = NULL; | |
573 | DWORD returnLength = 0; | |
574 | size_t byteOffset = 0; | |
575 | ||
576 | glpi = (LPFN_GLPI)GetProcAddress(GetModuleHandle(TEXT("kernel32")), | |
577 | "GetLogicalProcessorInformation"); | |
578 | ||
579 | if (glpi == NULL) { | |
580 | goto failed; | |
581 | } | |
582 | ||
583 | while(!done) { | |
584 | DWORD rc = glpi(buffer, &returnLength); | |
585 | if (FALSE == rc) { | |
586 | if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) { | |
587 | if (buffer) | |
588 | free(buffer); | |
589 | buffer = (PSYSTEM_LOGICAL_PROCESSOR_INFORMATION)malloc(returnLength); | |
590 | ||
591 | if (buffer == NULL) { | |
592 | perror("zstd"); | |
593 | exit(1); | |
594 | } | |
595 | } else { | |
596 | /* some other error */ | |
597 | goto failed; | |
598 | } | |
599 | } else { | |
600 | done = TRUE; | |
601 | } | |
602 | } | |
603 | ||
604 | ptr = buffer; | |
605 | ||
606 | while (byteOffset + sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION) <= returnLength) { | |
607 | ||
608 | if (ptr->Relationship == RelationProcessorCore) { | |
609 | numPhysicalCores++; | |
610 | } | |
611 | ||
612 | ptr++; | |
613 | byteOffset += sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION); | |
614 | } | |
615 | ||
616 | free(buffer); | |
617 | ||
618 | return numPhysicalCores; | |
619 | } | |
620 | ||
621 | failed: | |
622 | /* try to fall back on GetSystemInfo */ | |
623 | { SYSTEM_INFO sysinfo; | |
624 | GetSystemInfo(&sysinfo); | |
625 | numPhysicalCores = sysinfo.dwNumberOfProcessors; | |
626 | if (numPhysicalCores == 0) numPhysicalCores = 1; /* just in case */ | |
627 | } | |
628 | return numPhysicalCores; | |
629 | } | |
630 | ||
631 | #elif defined(__APPLE__) | |
632 | ||
633 | #include <sys/sysctl.h> | |
634 | ||
635 | /* Use apple-provided syscall | |
636 | * see: man 3 sysctl */ | |
637 | UTIL_STATIC int UTIL_countPhysicalCores(void) | |
638 | { | |
639 | static S32 numPhysicalCores = 0; /* apple specifies int32_t */ | |
640 | if (numPhysicalCores != 0) return numPhysicalCores; | |
641 | ||
642 | { size_t size = sizeof(S32); | |
643 | int const ret = sysctlbyname("hw.physicalcpu", &numPhysicalCores, &size, NULL, 0); | |
644 | if (ret != 0) { | |
645 | if (errno == ENOENT) { | |
646 | /* entry not present, fall back on 1 */ | |
647 | numPhysicalCores = 1; | |
648 | } else { | |
649 | perror("zstd: can't get number of physical cpus"); | |
650 | exit(1); | |
651 | } | |
652 | } | |
653 | ||
654 | return numPhysicalCores; | |
655 | } | |
656 | } | |
657 | ||
658 | #elif defined(__linux__) | |
659 | ||
660 | /* parse /proc/cpuinfo | |
661 | * siblings / cpu cores should give hyperthreading ratio | |
662 | * otherwise fall back on sysconf */ | |
663 | UTIL_STATIC int UTIL_countPhysicalCores(void) | |
664 | { | |
665 | static int numPhysicalCores = 0; | |
666 | ||
667 | if (numPhysicalCores != 0) return numPhysicalCores; | |
668 | ||
669 | numPhysicalCores = (int)sysconf(_SC_NPROCESSORS_ONLN); | |
670 | if (numPhysicalCores == -1) { | |
671 | /* value not queryable, fall back on 1 */ | |
672 | return numPhysicalCores = 1; | |
673 | } | |
674 | ||
675 | /* try to determine if there's hyperthreading */ | |
676 | { FILE* const cpuinfo = fopen("/proc/cpuinfo", "r"); | |
677 | #define BUF_SIZE 80 | |
678 | char buff[BUF_SIZE]; | |
679 | ||
680 | int siblings = 0; | |
681 | int cpu_cores = 0; | |
682 | int ratio = 1; | |
683 | ||
684 | if (cpuinfo == NULL) { | |
685 | /* fall back on the sysconf value */ | |
686 | return numPhysicalCores; | |
687 | } | |
688 | ||
689 | /* assume the cpu cores/siblings values will be constant across all | |
690 | * present processors */ | |
691 | while (!feof(cpuinfo)) { | |
692 | if (fgets(buff, BUF_SIZE, cpuinfo) != NULL) { | |
693 | if (strncmp(buff, "siblings", 8) == 0) { | |
694 | const char* const sep = strchr(buff, ':'); | |
695 | if (*sep == '\0') { | |
696 | /* formatting was broken? */ | |
697 | goto failed; | |
698 | } | |
699 | ||
700 | siblings = atoi(sep + 1); | |
701 | } | |
702 | if (strncmp(buff, "cpu cores", 9) == 0) { | |
703 | const char* const sep = strchr(buff, ':'); | |
704 | if (*sep == '\0') { | |
705 | /* formatting was broken? */ | |
706 | goto failed; | |
707 | } | |
708 | ||
709 | cpu_cores = atoi(sep + 1); | |
710 | } | |
711 | } else if (ferror(cpuinfo)) { | |
712 | /* fall back on the sysconf value */ | |
713 | goto failed; | |
714 | } | |
715 | } | |
716 | if (siblings && cpu_cores) { | |
717 | ratio = siblings / cpu_cores; | |
718 | } | |
719 | failed: | |
720 | fclose(cpuinfo); | |
721 | return numPhysicalCores = numPhysicalCores / ratio; | |
722 | } | |
723 | } | |
724 | ||
725 | #elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) | |
726 | ||
727 | /* Use apple-provided syscall | |
728 | * see: man 3 sysctl */ | |
729 | UTIL_STATIC int UTIL_countPhysicalCores(void) | |
730 | { | |
731 | static int numPhysicalCores = 0; | |
732 | ||
733 | if (numPhysicalCores != 0) return numPhysicalCores; | |
734 | ||
735 | numPhysicalCores = (int)sysconf(_SC_NPROCESSORS_ONLN); | |
736 | if (numPhysicalCores == -1) { | |
737 | /* value not queryable, fall back on 1 */ | |
738 | return numPhysicalCores = 1; | |
739 | } | |
740 | return numPhysicalCores; | |
741 | } | |
742 | ||
743 | #else | |
744 | ||
745 | UTIL_STATIC int UTIL_countPhysicalCores(void) | |
746 | { | |
747 | /* assume 1 */ | |
748 | return 1; | |
749 | } | |
750 | ||
751 | #endif | |
7c673cae FG |
752 | |
753 | #if defined (__cplusplus) | |
754 | } | |
755 | #endif | |
756 | ||
757 | #endif /* UTIL_H_MODULE */ |