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v1.3.8
programs/util.h
229 строк
8 KB
Yann Collet
fixed stdlib implementation of time functions
21 дек 2018, 01:02
21 дек 2018, 01:02
65a441a
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/* * Copyright (c) 2016-present, Przemyslaw Skibinski, Yann Collet, Facebook, Inc. * All rights reserved. * * This source code is licensed under both the BSD-style license (found in the * LICENSE file in the root directory of this source tree) and the GPLv2 (found * in the COPYING file in the root directory of this source tree). * You may select, at your option, one of the above-listed licenses. */ #ifndef UTIL_H_MODULE #define UTIL_H_MODULE #if defined (__cplusplus) extern "C" { #endif /*-**************************************** * Dependencies ******************************************/ #include "platform.h" /* PLATFORM_POSIX_VERSION, ZSTD_NANOSLEEP_SUPPORT, ZSTD_SETPRIORITY_SUPPORT */ #include <stdlib.h> /* malloc, realloc, free */ #include <stddef.h> /* size_t, ptrdiff_t */ #include <stdio.h> /* fprintf */ #include <sys/types.h> /* stat, utime */ #include <sys/stat.h> /* stat, chmod */ #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> /* clock_t, clock, CLOCKS_PER_SEC, nanosleep */ #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 & priority 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> /* sleep */ # define UTIL_sleep(s) sleep(s) # if ZSTD_NANOSLEEP_SUPPORT /* necessarily defined in platform.h */ # 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 # if ZSTD_SETPRIORITY_SUPPORT # include <sys/resource.h> /* setpriority */ # define SET_REALTIME_PRIORITY setpriority(PRIO_PROCESS, 0, -20) # else # define SET_REALTIME_PRIORITY /* disabled */ # endif #else /* unknown non-unix operating systen */ # define UTIL_sleep(s) /* disabled */ # define UTIL_sleepMilli(milli) /* disabled */ # define SET_REALTIME_PRIORITY /* 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 /*-**************************************** * Console log ******************************************/ extern int g_utilDisplayLevel; #define UTIL_DISPLAY(...) fprintf(stderr, __VA_ARGS__) #define UTIL_DISPLAYLEVEL(l, ...) { if (g_utilDisplayLevel>=l) { UTIL_DISPLAY(__VA_ARGS__); } } /*-**************************************** * Time functions ******************************************/ #if defined(_WIN32) /* Windows */ #define UTIL_TIME_INITIALIZER { { 0, 0 } } typedef LARGE_INTEGER UTIL_time_t; #elif defined(__APPLE__) && defined(__MACH__) #include <mach/mach_time.h> #define UTIL_TIME_INITIALIZER 0 typedef U64 UTIL_time_t; #elif (PLATFORM_POSIX_VERSION >= 200112L) \ && (defined(__UCLIBC__) \ || (defined(__GLIBC__) \ && ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 17) \ || (__GLIBC__ > 2)))) #define UTIL_TIME_INITIALIZER { 0, 0 } typedef struct timespec UTIL_freq_t; typedef struct timespec UTIL_time_t; UTIL_time_t UTIL_getSpanTime(UTIL_time_t begin, UTIL_time_t end); #else /* relies on standard C (note : clock_t measurements can be wrong when using multi-threading) */ typedef clock_t UTIL_time_t; #define UTIL_TIME_INITIALIZER 0 #endif UTIL_time_t UTIL_getTime(void); U64 UTIL_getSpanTimeMicro(UTIL_time_t clockStart, UTIL_time_t clockEnd); U64 UTIL_getSpanTimeNano(UTIL_time_t clockStart, UTIL_time_t clockEnd); #define SEC_TO_MICRO 1000000 /* returns time span in microseconds */ U64 UTIL_clockSpanMicro(UTIL_time_t clockStart); /* returns time span in microseconds */ U64 UTIL_clockSpanNano(UTIL_time_t clockStart); void UTIL_waitForNextTick(void); /*-**************************************** * File functions ******************************************/ #if defined(_MSC_VER) #define chmod _chmod typedef struct __stat64 stat_t; #else typedef struct stat stat_t; #endif int UTIL_fileExist(const char* filename); int UTIL_isRegularFile(const char* infilename); int UTIL_setFileStat(const char* filename, stat_t* statbuf); U32 UTIL_isDirectory(const char* infilename); int UTIL_getFileStat(const char* infilename, stat_t* statbuf); U32 UTIL_isLink(const char* infilename); #define UTIL_FILESIZE_UNKNOWN ((U64)(-1)) U64 UTIL_getFileSize(const char* infilename); U64 UTIL_getTotalFileSize(const char* const * const fileNamesTable, unsigned nbFiles); /* * 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; } int UTIL_prepareFileList(const char* dirName, char** bufStart, size_t* pos, char** bufEnd, int followLinks); #ifdef _WIN32 # define UTIL_HAS_CREATEFILELIST #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 */ #else #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. */ const char** UTIL_createFileList(const char **inputNames, unsigned inputNamesNb, char** allocatedBuffer, unsigned* allocatedNamesNb, int followLinks); UTIL_STATIC void UTIL_freeFileList(const char** filenameTable, char* allocatedBuffer) { if (allocatedBuffer) free(allocatedBuffer); if (filenameTable) free((void*)filenameTable); } int UTIL_countPhysicalCores(void); #if defined (__cplusplus) } #endif #endif /* UTIL_H_MODULE */