191 lines
6.6 KiB
C
191 lines
6.6 KiB
C
/*
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* Copyright (c) 2016-present, Przemyslaw Skibinski, Yann Collet, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under both the BSD-style license (found in the
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* LICENSE file in the root directory of this source tree) and the GPLv2 (found
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* in the COPYING file in the root directory of this source tree).
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* You may select, at your option, one of the above-listed licenses.
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*/
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#ifndef UTIL_H_MODULE
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#define UTIL_H_MODULE
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#if defined (__cplusplus)
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extern "C" {
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#endif
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/*-****************************************
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* Dependencies
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******************************************/
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#include "platform.h" /* PLATFORM_POSIX_VERSION, ZSTD_NANOSLEEP_SUPPORT, ZSTD_SETPRIORITY_SUPPORT */
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#include <stdlib.h> /* malloc, realloc, free */
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#include <stddef.h> /* size_t, ptrdiff_t */
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#include <stdio.h> /* fprintf */
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#include <sys/types.h> /* stat, utime */
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#include <sys/stat.h> /* stat, chmod */
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#if defined(_WIN32)
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# include <sys/utime.h> /* utime */
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# include <io.h> /* _chmod */
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#else
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# include <unistd.h> /* chown, stat */
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#if PLATFORM_POSIX_VERSION < 200809L
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# include <utime.h> /* utime */
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#else
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# include <fcntl.h> /* AT_FDCWD */
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# include <sys/stat.h> /* utimensat */
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#endif
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#endif
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#include <time.h> /* clock_t, clock, CLOCKS_PER_SEC, nanosleep */
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#include "mem.h" /* U32, U64 */
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/*-************************************************************
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* Avoid fseek()'s 2GiB barrier with MSVC, macOS, *BSD, MinGW
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***************************************************************/
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#if defined(_MSC_VER) && (_MSC_VER >= 1400)
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# define UTIL_fseek _fseeki64
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#elif !defined(__64BIT__) && (PLATFORM_POSIX_VERSION >= 200112L) /* No point defining Large file for 64 bit */
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# define UTIL_fseek fseeko
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#elif defined(__MINGW32__) && defined(__MSVCRT__) && !defined(__STRICT_ANSI__) && !defined(__NO_MINGW_LFS)
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# define UTIL_fseek fseeko64
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#else
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# define UTIL_fseek fseek
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#endif
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/*-*************************************************
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* Sleep & priority functions: Windows - Posix - others
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***************************************************/
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#if defined(_WIN32)
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# include <windows.h>
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# define SET_REALTIME_PRIORITY SetPriorityClass(GetCurrentProcess(), REALTIME_PRIORITY_CLASS)
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# define UTIL_sleep(s) Sleep(1000*s)
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# define UTIL_sleepMilli(milli) Sleep(milli)
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#elif PLATFORM_POSIX_VERSION > 0 /* Unix-like operating system */
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# include <unistd.h> /* sleep */
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# define UTIL_sleep(s) sleep(s)
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# if ZSTD_NANOSLEEP_SUPPORT /* necessarily defined in platform.h */
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# define UTIL_sleepMilli(milli) { struct timespec t; t.tv_sec=0; t.tv_nsec=milli*1000000ULL; nanosleep(&t, NULL); }
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# else
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# define UTIL_sleepMilli(milli) /* disabled */
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# endif
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# if ZSTD_SETPRIORITY_SUPPORT
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# include <sys/resource.h> /* setpriority */
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# define SET_REALTIME_PRIORITY setpriority(PRIO_PROCESS, 0, -20)
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# else
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# define SET_REALTIME_PRIORITY /* disabled */
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# endif
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#else /* unknown non-unix operating systen */
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# define UTIL_sleep(s) /* disabled */
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# define UTIL_sleepMilli(milli) /* disabled */
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# define SET_REALTIME_PRIORITY /* disabled */
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#endif
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/*-*************************************
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* Constants
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***************************************/
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#define LIST_SIZE_INCREASE (8*1024)
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/*-****************************************
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* Compiler specifics
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******************************************/
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#if defined(__INTEL_COMPILER)
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# pragma warning(disable : 177) /* disable: message #177: function was declared but never referenced, useful with UTIL_STATIC */
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#endif
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#if defined(__GNUC__)
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# define UTIL_STATIC static __attribute__((unused))
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#elif defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */)
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# define UTIL_STATIC static inline
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#elif defined(_MSC_VER)
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# define UTIL_STATIC static __inline
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#else
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# define UTIL_STATIC static /* this version may generate warnings for unused static functions; disable the relevant warning */
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#endif
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/*-****************************************
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* Console log
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******************************************/
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extern int g_utilDisplayLevel;
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#define UTIL_DISPLAY(...) fprintf(stderr, __VA_ARGS__)
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#define UTIL_DISPLAYLEVEL(l, ...) { if (g_utilDisplayLevel>=l) { UTIL_DISPLAY(__VA_ARGS__); } }
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/*-****************************************
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* File functions
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******************************************/
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#if defined(_MSC_VER)
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#define chmod _chmod
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typedef struct __stat64 stat_t;
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#else
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typedef struct stat stat_t;
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#endif
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int UTIL_fileExist(const char* filename);
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int UTIL_isRegularFile(const char* infilename);
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int UTIL_setFileStat(const char* filename, stat_t* statbuf);
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U32 UTIL_isDirectory(const char* infilename);
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int UTIL_getFileStat(const char* infilename, stat_t* statbuf);
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int UTIL_isSameFile(const char* file1, const char* file2);
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int UTIL_compareStr(const void *p1, const void *p2);
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U32 UTIL_isLink(const char* infilename);
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#define UTIL_FILESIZE_UNKNOWN ((U64)(-1))
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U64 UTIL_getFileSize(const char* infilename);
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U64 UTIL_getTotalFileSize(const char* const * const fileNamesTable, unsigned nbFiles);
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/*
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* A modified version of realloc().
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* If UTIL_realloc() fails the original block is freed.
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*/
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UTIL_STATIC void* UTIL_realloc(void *ptr, size_t size)
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{
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void *newptr = realloc(ptr, size);
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if (newptr) return newptr;
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free(ptr);
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return NULL;
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}
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int UTIL_prepareFileList(const char* dirName, char** bufStart, size_t* pos, char** bufEnd, int followLinks);
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#ifdef _WIN32
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# define UTIL_HAS_CREATEFILELIST
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#elif defined(__linux__) || (PLATFORM_POSIX_VERSION >= 200112L) /* opendir, readdir require POSIX.1-2001 */
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# define UTIL_HAS_CREATEFILELIST
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# include <dirent.h> /* opendir, readdir */
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# include <string.h> /* strerror, memcpy */
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#else
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#endif /* #ifdef _WIN32 */
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/*
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* UTIL_createFileList - takes a list of files and directories (params: inputNames, inputNamesNb), scans directories,
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* and returns a new list of files (params: return value, allocatedBuffer, allocatedNamesNb).
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* After finishing usage of the list the structures should be freed with UTIL_freeFileList(params: return value, allocatedBuffer)
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* In case of error UTIL_createFileList returns NULL and UTIL_freeFileList should not be called.
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*/
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const char**
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UTIL_createFileList(const char **inputNames, unsigned inputNamesNb,
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char** allocatedBuffer, unsigned* allocatedNamesNb,
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int followLinks);
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UTIL_STATIC void UTIL_freeFileList(const char** filenameTable, char* allocatedBuffer)
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{
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if (allocatedBuffer) free(allocatedBuffer);
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if (filenameTable) free((void*)filenameTable);
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}
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int UTIL_countPhysicalCores(void);
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#if defined (__cplusplus)
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}
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#endif
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#endif /* UTIL_H_MODULE */
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