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Diffstat (limited to 'programs/util.h')
| -rw-r--r-- | programs/util.h | 473 |
1 files changed, 473 insertions, 0 deletions
diff --git a/programs/util.h b/programs/util.h new file mode 100644 index 000000000000..59e19d027ccd --- /dev/null +++ b/programs/util.h @@ -0,0 +1,473 @@ +/** + * util.h - utility functions + * + * Copyright (c) 2016-present, Przemyslaw Skibinski, Yann Collet, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + */ + +#ifndef UTIL_H_MODULE +#define UTIL_H_MODULE + +#if defined (__cplusplus) +extern "C" { +#endif + + + +/*-**************************************** +* Dependencies +******************************************/ +#include "platform.h" /* PLATFORM_POSIX_VERSION */ +#include <stdlib.h> /* malloc */ +#include <stddef.h> /* size_t, ptrdiff_t */ +#include <stdio.h> /* fprintf */ +#include <sys/types.h> /* stat, utime */ +#include <sys/stat.h> /* stat */ +#if defined(_MSC_VER) +# include <sys/utime.h> /* utime */ +# include <io.h> /* _chmod */ +#else +# include <unistd.h> /* chown, stat */ +# include <utime.h> /* utime */ +#endif +#include <time.h> /* time */ +#include <errno.h> +#include "mem.h" /* U32, U64 */ + + +/* ************************************************************ +* Avoid fseek()'s 2GiB barrier with MSVC, MacOS, *BSD, MinGW +***************************************************************/ +#if defined(_MSC_VER) && (_MSC_VER >= 1400) +# define UTIL_fseek _fseeki64 +#elif !defined(__64BIT__) && (PLATFORM_POSIX_VERSION >= 200112L) /* No point defining Large file for 64 bit */ +# define UTIL_fseek fseeko +#elif defined(__MINGW32__) && defined(__MSVCRT__) && !defined(__STRICT_ANSI__) && !defined(__NO_MINGW_LFS) +# define UTIL_fseek fseeko64 +#else +# define UTIL_fseek fseek +#endif + + +/*-**************************************** +* Sleep functions: Windows - Posix - others +******************************************/ +#if defined(_WIN32) +# include <windows.h> +# define SET_REALTIME_PRIORITY SetPriorityClass(GetCurrentProcess(), REALTIME_PRIORITY_CLASS) +# define UTIL_sleep(s) Sleep(1000*s) +# define UTIL_sleepMilli(milli) Sleep(milli) +#elif PLATFORM_POSIX_VERSION >= 0 /* Unix-like operating system */ +# include <unistd.h> +# include <sys/resource.h> /* setpriority */ +# include <time.h> /* clock_t, nanosleep, clock, CLOCKS_PER_SEC */ +# if defined(PRIO_PROCESS) +# define SET_REALTIME_PRIORITY setpriority(PRIO_PROCESS, 0, -20) +# else +# define SET_REALTIME_PRIORITY /* disabled */ +# endif +# define UTIL_sleep(s) sleep(s) +# if (defined(__linux__) && (PLATFORM_POSIX_VERSION >= 199309L)) || (PLATFORM_POSIX_VERSION >= 200112L) /* nanosleep requires POSIX.1-2001 */ +# define UTIL_sleepMilli(milli) { struct timespec t; t.tv_sec=0; t.tv_nsec=milli*1000000ULL; nanosleep(&t, NULL); } +# else +# define UTIL_sleepMilli(milli) /* disabled */ +# endif +#else +# define SET_REALTIME_PRIORITY /* disabled */ +# define UTIL_sleep(s) /* disabled */ +# define UTIL_sleepMilli(milli) /* disabled */ +#endif + + +/* ************************************* +* Constants +***************************************/ +#define LIST_SIZE_INCREASE (8*1024) + + +/*-**************************************** +* Compiler specifics +******************************************/ +#if defined(__INTEL_COMPILER) +# pragma warning(disable : 177) /* disable: message #177: function was declared but never referenced, useful with UTIL_STATIC */ +#endif +#if defined(__GNUC__) +# define UTIL_STATIC static __attribute__((unused)) +#elif defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */) +# define UTIL_STATIC static inline +#elif defined(_MSC_VER) +# define UTIL_STATIC static __inline +#else +# define UTIL_STATIC static /* this version may generate warnings for unused static functions; disable the relevant warning */ +#endif + + +/*-**************************************** +* Time functions +******************************************/ +#if defined(_WIN32) /* Windows */ + typedef LARGE_INTEGER UTIL_freq_t; + typedef LARGE_INTEGER UTIL_time_t; + UTIL_STATIC void UTIL_initTimer(UTIL_freq_t* ticksPerSecond) { if (!QueryPerformanceFrequency(ticksPerSecond)) fprintf(stderr, "ERROR: QueryPerformance not present\n"); } + UTIL_STATIC void UTIL_getTime(UTIL_time_t* x) { QueryPerformanceCounter(x); } + UTIL_STATIC U64 UTIL_getSpanTimeMicro(UTIL_freq_t ticksPerSecond, UTIL_time_t clockStart, UTIL_time_t clockEnd) { return 1000000ULL*(clockEnd.QuadPart - clockStart.QuadPart)/ticksPerSecond.QuadPart; } + UTIL_STATIC U64 UTIL_getSpanTimeNano(UTIL_freq_t ticksPerSecond, UTIL_time_t clockStart, UTIL_time_t clockEnd) { return 1000000000ULL*(clockEnd.QuadPart - clockStart.QuadPart)/ticksPerSecond.QuadPart; } +#elif defined(__APPLE__) && defined(__MACH__) + #include <mach/mach_time.h> + typedef mach_timebase_info_data_t UTIL_freq_t; + typedef U64 UTIL_time_t; + UTIL_STATIC void UTIL_initTimer(UTIL_freq_t* rate) { mach_timebase_info(rate); } + UTIL_STATIC void UTIL_getTime(UTIL_time_t* x) { *x = mach_absolute_time(); } + UTIL_STATIC U64 UTIL_getSpanTimeMicro(UTIL_freq_t rate, UTIL_time_t clockStart, UTIL_time_t clockEnd) { return (((clockEnd - clockStart) * (U64)rate.numer) / ((U64)rate.denom))/1000ULL; } + UTIL_STATIC U64 UTIL_getSpanTimeNano(UTIL_freq_t rate, UTIL_time_t clockStart, UTIL_time_t clockEnd) { return ((clockEnd - clockStart) * (U64)rate.numer) / ((U64)rate.denom); } +#elif (PLATFORM_POSIX_VERSION >= 200112L) + #include <sys/times.h> /* times */ + typedef U64 UTIL_freq_t; + typedef U64 UTIL_time_t; + UTIL_STATIC void UTIL_initTimer(UTIL_freq_t* ticksPerSecond) { *ticksPerSecond=sysconf(_SC_CLK_TCK); } + UTIL_STATIC void UTIL_getTime(UTIL_time_t* x) { struct tms junk; clock_t newTicks = (clock_t) times(&junk); (void)junk; *x = (UTIL_time_t)newTicks; } + UTIL_STATIC U64 UTIL_getSpanTimeMicro(UTIL_freq_t ticksPerSecond, UTIL_time_t clockStart, UTIL_time_t clockEnd) { return 1000000ULL * (clockEnd - clockStart) / ticksPerSecond; } + UTIL_STATIC U64 UTIL_getSpanTimeNano(UTIL_freq_t ticksPerSecond, UTIL_time_t clockStart, UTIL_time_t clockEnd) { return 1000000000ULL * (clockEnd - clockStart) / ticksPerSecond; } +#else /* relies on standard C (note : clock_t measurements can be wrong when using multi-threading) */ + typedef clock_t UTIL_freq_t; + typedef clock_t UTIL_time_t; + UTIL_STATIC void UTIL_initTimer(UTIL_freq_t* ticksPerSecond) { *ticksPerSecond=0; } + UTIL_STATIC void UTIL_getTime(UTIL_time_t* x) { *x = clock(); } + UTIL_STATIC U64 UTIL_getSpanTimeMicro(UTIL_freq_t ticksPerSecond, UTIL_time_t clockStart, UTIL_time_t clockEnd) { (void)ticksPerSecond; return 1000000ULL * (clockEnd - clockStart) / CLOCKS_PER_SEC; } + UTIL_STATIC U64 UTIL_getSpanTimeNano(UTIL_freq_t ticksPerSecond, UTIL_time_t clockStart, UTIL_time_t clockEnd) { (void)ticksPerSecond; return 1000000000ULL * (clockEnd - clockStart) / CLOCKS_PER_SEC; } +#endif + + +/* returns time span in microseconds */ +UTIL_STATIC U64 UTIL_clockSpanMicro( UTIL_time_t clockStart, UTIL_freq_t ticksPerSecond ) +{ + UTIL_time_t clockEnd; + UTIL_getTime(&clockEnd); + return UTIL_getSpanTimeMicro(ticksPerSecond, clockStart, clockEnd); +} + + +UTIL_STATIC void UTIL_waitForNextTick(UTIL_freq_t ticksPerSecond) +{ + UTIL_time_t clockStart, clockEnd; + UTIL_getTime(&clockStart); + do { + UTIL_getTime(&clockEnd); + } while (UTIL_getSpanTimeNano(ticksPerSecond, clockStart, clockEnd) == 0); +} + + + +/*-**************************************** +* File functions +******************************************/ +#if defined(_MSC_VER) + #define chmod _chmod + typedef struct __stat64 stat_t; +#else + typedef struct stat stat_t; +#endif + + +UTIL_STATIC int UTIL_setFileStat(const char *filename, stat_t *statbuf) +{ + int res = 0; + struct utimbuf timebuf; + + timebuf.actime = time(NULL); + timebuf.modtime = statbuf->st_mtime; + res += utime(filename, &timebuf); /* set access and modification times */ + +#if !defined(_WIN32) + res += chown(filename, statbuf->st_uid, statbuf->st_gid); /* Copy ownership */ +#endif + + res += chmod(filename, statbuf->st_mode & 07777); /* Copy file permissions */ + + errno = 0; + return -res; /* number of errors is returned */ +} + + +UTIL_STATIC int UTIL_getFileStat(const char* infilename, stat_t *statbuf) +{ + int r; +#if defined(_MSC_VER) + r = _stat64(infilename, statbuf); + if (r || !(statbuf->st_mode & S_IFREG)) return 0; /* No good... */ +#else + r = stat(infilename, statbuf); + if (r || !S_ISREG(statbuf->st_mode)) return 0; /* No good... */ +#endif + return 1; +} + + +UTIL_STATIC int UTIL_isRegFile(const char* infilename) +{ + stat_t statbuf; + return UTIL_getFileStat(infilename, &statbuf); /* Only need to know whether it is a regular file */ +} + + +UTIL_STATIC U32 UTIL_isDirectory(const char* infilename) +{ + int r; + stat_t statbuf; +#if defined(_MSC_VER) + r = _stat64(infilename, &statbuf); + if (!r && (statbuf.st_mode & _S_IFDIR)) return 1; +#else + r = stat(infilename, &statbuf); + if (!r && S_ISDIR(statbuf.st_mode)) return 1; +#endif + return 0; +} + + +UTIL_STATIC U64 UTIL_getFileSize(const char* infilename) +{ + int r; +#if defined(_MSC_VER) + struct __stat64 statbuf; + r = _stat64(infilename, &statbuf); + if (r || !(statbuf.st_mode & S_IFREG)) return 0; /* No good... */ +#elif defined(__MINGW32__) && defined (__MSVCRT__) + struct _stati64 statbuf; + r = _stati64(infilename, &statbuf); + if (r || !(statbuf.st_mode & S_IFREG)) return 0; /* No good... */ +#else + struct stat statbuf; + r = stat(infilename, &statbuf); + if (r || !S_ISREG(statbuf.st_mode)) return 0; /* No good... */ +#endif + return (U64)statbuf.st_size; +} + + +UTIL_STATIC U64 UTIL_getTotalFileSize(const char** fileNamesTable, unsigned nbFiles) +{ + U64 total = 0; + unsigned n; + for (n=0; n<nbFiles; n++) + total += UTIL_getFileSize(fileNamesTable[n]); + return total; +} + + +/* + * A modified version of realloc(). + * If UTIL_realloc() fails the original block is freed. +*/ +UTIL_STATIC void *UTIL_realloc(void *ptr, size_t size) +{ + void *newptr = realloc(ptr, size); + if (newptr) return newptr; + free(ptr); + return NULL; +} + + +#ifdef _WIN32 +# define UTIL_HAS_CREATEFILELIST + +UTIL_STATIC int UTIL_prepareFileList(const char *dirName, char** bufStart, size_t* pos, char** bufEnd) +{ + char* path; + int dirLength, fnameLength, pathLength, nbFiles = 0; + WIN32_FIND_DATAA cFile; + HANDLE hFile; + + dirLength = (int)strlen(dirName); + path = (char*) malloc(dirLength + 3); + if (!path) return 0; + + memcpy(path, dirName, dirLength); + path[dirLength] = '\\'; + path[dirLength+1] = '*'; + path[dirLength+2] = 0; + + hFile=FindFirstFileA(path, &cFile); + if (hFile == INVALID_HANDLE_VALUE) { + fprintf(stderr, "Cannot open directory '%s'\n", dirName); + return 0; + } + free(path); + + do { + fnameLength = (int)strlen(cFile.cFileName); + path = (char*) malloc(dirLength + fnameLength + 2); + if (!path) { FindClose(hFile); return 0; } + memcpy(path, dirName, dirLength); + path[dirLength] = '\\'; + memcpy(path+dirLength+1, cFile.cFileName, fnameLength); + pathLength = dirLength+1+fnameLength; + path[pathLength] = 0; + if (cFile.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) { + if (strcmp (cFile.cFileName, "..") == 0 || + strcmp (cFile.cFileName, ".") == 0) continue; + + nbFiles += UTIL_prepareFileList(path, bufStart, pos, bufEnd); /* Recursively call "UTIL_prepareFileList" with the new path. */ + if (*bufStart == NULL) { free(path); FindClose(hFile); return 0; } + } + else if ((cFile.dwFileAttributes & FILE_ATTRIBUTE_NORMAL) || (cFile.dwFileAttributes & FILE_ATTRIBUTE_ARCHIVE) || (cFile.dwFileAttributes & FILE_ATTRIBUTE_COMPRESSED)) { + if (*bufStart + *pos + pathLength >= *bufEnd) { + ptrdiff_t newListSize = (*bufEnd - *bufStart) + LIST_SIZE_INCREASE; + *bufStart = (char*)UTIL_realloc(*bufStart, newListSize); + *bufEnd = *bufStart + newListSize; + if (*bufStart == NULL) { free(path); FindClose(hFile); return 0; } + } + if (*bufStart + *pos + pathLength < *bufEnd) { + strncpy(*bufStart + *pos, path, *bufEnd - (*bufStart + *pos)); + *pos += pathLength + 1; + nbFiles++; + } + } + free(path); + } while (FindNextFileA(hFile, &cFile)); + + FindClose(hFile); + return nbFiles; +} + +#elif defined(__linux__) || (PLATFORM_POSIX_VERSION >= 200112L) /* opendir, readdir require POSIX.1-2001 */ +# define UTIL_HAS_CREATEFILELIST +# include <dirent.h> /* opendir, readdir */ +# include <string.h> /* strerror, memcpy */ + +UTIL_STATIC int UTIL_prepareFileList(const char *dirName, char** bufStart, size_t* pos, char** bufEnd) +{ + DIR *dir; + struct dirent *entry; + char* path; + int dirLength, fnameLength, pathLength, nbFiles = 0; + + if (!(dir = opendir(dirName))) { + fprintf(stderr, "Cannot open directory '%s': %s\n", dirName, strerror(errno)); + return 0; + } + + dirLength = (int)strlen(dirName); + errno = 0; + while ((entry = readdir(dir)) != NULL) { + if (strcmp (entry->d_name, "..") == 0 || + strcmp (entry->d_name, ".") == 0) continue; + fnameLength = (int)strlen(entry->d_name); + path = (char*) malloc(dirLength + fnameLength + 2); + if (!path) { closedir(dir); return 0; } + memcpy(path, dirName, dirLength); + path[dirLength] = '/'; + memcpy(path+dirLength+1, entry->d_name, fnameLength); + pathLength = dirLength+1+fnameLength; + path[pathLength] = 0; + + if (UTIL_isDirectory(path)) { + nbFiles += UTIL_prepareFileList(path, bufStart, pos, bufEnd); /* Recursively call "UTIL_prepareFileList" with the new path. */ + if (*bufStart == NULL) { free(path); closedir(dir); return 0; } + } else { + if (*bufStart + *pos + pathLength >= *bufEnd) { + ptrdiff_t newListSize = (*bufEnd - *bufStart) + LIST_SIZE_INCREASE; + *bufStart = (char*)UTIL_realloc(*bufStart, newListSize); + *bufEnd = *bufStart + newListSize; + if (*bufStart == NULL) { free(path); closedir(dir); return 0; } + } + if (*bufStart + *pos + pathLength < *bufEnd) { + strncpy(*bufStart + *pos, path, *bufEnd - (*bufStart + *pos)); + *pos += pathLength + 1; + nbFiles++; + } + } + free(path); + errno = 0; /* clear errno after UTIL_isDirectory, UTIL_prepareFileList */ + } + + if (errno != 0) { + fprintf(stderr, "readdir(%s) error: %s\n", dirName, strerror(errno)); + free(*bufStart); + *bufStart = NULL; + } + closedir(dir); + return nbFiles; +} + +#else + +UTIL_STATIC int UTIL_prepareFileList(const char *dirName, char** bufStart, size_t* pos, char** bufEnd) +{ + (void)bufStart; (void)bufEnd; (void)pos; + fprintf(stderr, "Directory %s ignored (compiled without _WIN32 or _POSIX_C_SOURCE)\n", dirName); + return 0; +} + +#endif /* #ifdef _WIN32 */ + +/* + * UTIL_createFileList - takes a list of files and directories (params: inputNames, inputNamesNb), scans directories, + * and returns a new list of files (params: return value, allocatedBuffer, allocatedNamesNb). + * After finishing usage of the list the structures should be freed with UTIL_freeFileList(params: return value, allocatedBuffer) + * In case of error UTIL_createFileList returns NULL and UTIL_freeFileList should not be called. + */ +UTIL_STATIC const char** UTIL_createFileList(const char **inputNames, unsigned inputNamesNb, char** allocatedBuffer, unsigned* allocatedNamesNb) +{ + size_t pos; + unsigned i, nbFiles; + char* buf = (char*)malloc(LIST_SIZE_INCREASE); + char* bufend = buf + LIST_SIZE_INCREASE; + const char** fileTable; + + if (!buf) return NULL; + + for (i=0, pos=0, nbFiles=0; i<inputNamesNb; i++) { + if (!UTIL_isDirectory(inputNames[i])) { + size_t const len = strlen(inputNames[i]); + if (buf + pos + len >= bufend) { + ptrdiff_t newListSize = (bufend - buf) + LIST_SIZE_INCREASE; + buf = (char*)UTIL_realloc(buf, newListSize); + bufend = buf + newListSize; + if (!buf) return NULL; + } + if (buf + pos + len < bufend) { + strncpy(buf + pos, inputNames[i], bufend - (buf + pos)); + pos += len + 1; + nbFiles++; + } + } else { + nbFiles += UTIL_prepareFileList(inputNames[i], &buf, &pos, &bufend); + if (buf == NULL) return NULL; + } } + + if (nbFiles == 0) { free(buf); return NULL; } + + fileTable = (const char**)malloc((nbFiles+1) * sizeof(const char*)); + if (!fileTable) { free(buf); return NULL; } + + for (i=0, pos=0; i<nbFiles; i++) { + fileTable[i] = buf + pos; + pos += strlen(fileTable[i]) + 1; + } + + if (buf + pos > bufend) { free(buf); free((void*)fileTable); return NULL; } + + *allocatedBuffer = buf; + *allocatedNamesNb = nbFiles; + + return fileTable; +} + + +UTIL_STATIC void UTIL_freeFileList(const char** filenameTable, char* allocatedBuffer) +{ + if (allocatedBuffer) free(allocatedBuffer); + if (filenameTable) free((void*)filenameTable); +} + + +#if defined (__cplusplus) +} +#endif + +#endif /* UTIL_H_MODULE */ |