1 /* 2 * Copyright (c) Przemyslaw Skibinski, Yann Collet, Facebook, Inc. 3 * All rights reserved. 4 * 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. 9 */ 10 11 #ifndef PLATFORM_H_MODULE 12 #define PLATFORM_H_MODULE 13 14 #if defined (__cplusplus) 15 extern "C" { 16 #endif 17 18 19 20 /* ************************************** 21 * Compiler Options 22 ****************************************/ 23 #if defined(_MSC_VER) 24 # define _CRT_SECURE_NO_WARNINGS /* Disable Visual Studio warning messages for fopen, strncpy, strerror */ 25 # define _CRT_NONSTDC_NO_WARNINGS /* Disable C4996 complaining about posix function names */ 26 # if (_MSC_VER <= 1800) /* 1800 == Visual Studio 2013 */ 27 # define _CRT_SECURE_NO_DEPRECATE /* VS2005 - must be declared before <io.h> and <windows.h> */ 28 # define snprintf sprintf_s /* snprintf unsupported by Visual <= 2013 */ 29 # endif 30 # pragma warning(disable : 4127) /* disable: C4127: conditional expression is constant */ 31 #endif 32 33 34 /* ************************************** 35 * Detect 64-bit OS 36 * http://nadeausoftware.com/articles/2012/02/c_c_tip_how_detect_processor_type_using_compiler_predefined_macros 37 ****************************************/ 38 #if defined __ia64 || defined _M_IA64 /* Intel Itanium */ \ 39 || defined __powerpc64__ || defined __ppc64__ || defined __PPC64__ /* POWER 64-bit */ \ 40 || (defined __sparc && (defined __sparcv9 || defined __sparc_v9__ || defined __arch64__)) || defined __sparc64__ /* SPARC 64-bit */ \ 41 || defined __x86_64__s || defined _M_X64 /* x86 64-bit */ \ 42 || defined __arm64__ || defined __aarch64__ || defined __ARM64_ARCH_8__ /* ARM 64-bit */ \ 43 || (defined __mips && (__mips == 64 || __mips == 4 || __mips == 3)) /* MIPS 64-bit */ \ 44 || defined _LP64 || defined __LP64__ /* NetBSD, OpenBSD */ || defined __64BIT__ /* AIX */ || defined _ADDR64 /* Cray */ \ 45 || (defined __SIZEOF_POINTER__ && __SIZEOF_POINTER__ == 8) /* gcc */ 46 # if !defined(__64BIT__) 47 # define __64BIT__ 1 48 # endif 49 #endif 50 51 52 /* ********************************************************* 53 * Turn on Large Files support (>4GB) for 32-bit Linux/Unix 54 ***********************************************************/ 55 #if !defined(__64BIT__) || defined(__MINGW32__) /* No point defining Large file for 64 bit but MinGW-w64 requires it */ 56 # if !defined(_FILE_OFFSET_BITS) 57 # define _FILE_OFFSET_BITS 64 /* turn off_t into a 64-bit type for ftello, fseeko */ 58 # endif 59 # if !defined(_LARGEFILE_SOURCE) /* obsolete macro, replaced with _FILE_OFFSET_BITS */ 60 # define _LARGEFILE_SOURCE 1 /* Large File Support extension (LFS) - fseeko, ftello */ 61 # endif 62 # if defined(_AIX) || defined(__hpux) 63 # define _LARGE_FILES /* Large file support on 32-bits AIX and HP-UX */ 64 # endif 65 #endif 66 67 68 /* ************************************************************ 69 * Detect POSIX version 70 * PLATFORM_POSIX_VERSION = 0 for non-Unix e.g. Windows 71 * PLATFORM_POSIX_VERSION = 1 for Unix-like but non-POSIX 72 * PLATFORM_POSIX_VERSION > 1 is equal to found _POSIX_VERSION 73 * Value of PLATFORM_POSIX_VERSION can be forced on command line 74 ***************************************************************/ 75 #ifndef PLATFORM_POSIX_VERSION 76 77 # if (defined(__APPLE__) && defined(__MACH__)) || defined(__SVR4) || defined(_AIX) || defined(__hpux) /* POSIX.1-2001 (SUSv3) conformant */ \ 78 || defined(__DragonFly__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) /* BSD distros */ 79 /* exception rule : force posix version to 200112L, 80 * note: it's better to use unistd.h's _POSIX_VERSION whenever possible */ 81 # define PLATFORM_POSIX_VERSION 200112L 82 83 /* try to determine posix version through official unistd.h's _POSIX_VERSION (http://pubs.opengroup.org/onlinepubs/7908799/xsh/unistd.h.html). 84 * note : there is no simple way to know in advance if <unistd.h> is present or not on target system, 85 * Posix specification mandates its presence and its content, but target system must respect this spec. 86 * It's necessary to _not_ #include <unistd.h> whenever target OS is not unix-like 87 * otherwise it will block preprocessing stage. 88 * The following list of build macros tries to "guess" if target OS is likely unix-like, and therefore can #include <unistd.h> 89 */ 90 # elif !defined(_WIN32) \ 91 && ( defined(__unix__) || defined(__unix) \ 92 || defined(__midipix__) || defined(__VMS) || defined(__HAIKU__) ) 93 94 # if defined(__linux__) || defined(__linux) || defined(__CYGWIN__) 95 # ifndef _POSIX_C_SOURCE 96 # define _POSIX_C_SOURCE 200809L /* feature test macro : https://www.gnu.org/software/libc/manual/html_node/Feature-Test-Macros.html */ 97 # endif 98 # endif 99 # include <unistd.h> /* declares _POSIX_VERSION */ 100 # if defined(_POSIX_VERSION) /* POSIX compliant */ 101 # define PLATFORM_POSIX_VERSION _POSIX_VERSION 102 # else 103 # define PLATFORM_POSIX_VERSION 1 104 # endif 105 106 # ifdef __UCLIBC__ 107 # ifndef __USE_MISC 108 # define __USE_MISC /* enable st_mtim on uclibc */ 109 # endif 110 # endif 111 112 # else /* non-unix target platform (like Windows) */ 113 # define PLATFORM_POSIX_VERSION 0 114 # endif 115 116 #endif /* PLATFORM_POSIX_VERSION */ 117 118 119 #if PLATFORM_POSIX_VERSION > 1 120 /* glibc < 2.26 may not expose struct timespec def without this. 121 * See issue #1920. */ 122 # ifndef _ATFILE_SOURCE 123 # define _ATFILE_SOURCE 124 # endif 125 #endif 126 127 128 /*-********************************************* 129 * Detect if isatty() and fileno() are available 130 ************************************************/ 131 #if (defined(__linux__) && (PLATFORM_POSIX_VERSION > 1)) \ 132 || (PLATFORM_POSIX_VERSION >= 200112L) \ 133 || defined(__DJGPP__) 134 # include <unistd.h> /* isatty */ 135 # include <stdio.h> /* fileno */ 136 # define IS_CONSOLE(stdStream) isatty(fileno(stdStream)) 137 #elif defined(MSDOS) || defined(OS2) 138 # include <io.h> /* _isatty */ 139 # define IS_CONSOLE(stdStream) _isatty(_fileno(stdStream)) 140 #elif defined(WIN32) || defined(_WIN32) 141 # include <io.h> /* _isatty */ 142 # include <windows.h> /* DeviceIoControl, HANDLE, FSCTL_SET_SPARSE */ 143 # include <stdio.h> /* FILE */ 144 static __inline int IS_CONSOLE(FILE* stdStream) { 145 DWORD dummy; 146 return _isatty(_fileno(stdStream)) && GetConsoleMode((HANDLE)_get_osfhandle(_fileno(stdStream)), &dummy); 147 } 148 #else 149 # define IS_CONSOLE(stdStream) 0 150 #endif 151 152 153 /****************************** 154 * OS-specific IO behaviors 155 ******************************/ 156 #if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(_WIN32) 157 # include <fcntl.h> /* _O_BINARY */ 158 # include <io.h> /* _setmode, _fileno, _get_osfhandle */ 159 # if !defined(__DJGPP__) 160 # include <windows.h> /* DeviceIoControl, HANDLE, FSCTL_SET_SPARSE */ 161 # include <winioctl.h> /* FSCTL_SET_SPARSE */ 162 # define SET_BINARY_MODE(file) { int const unused=_setmode(_fileno(file), _O_BINARY); (void)unused; } 163 # define SET_SPARSE_FILE_MODE(file) { DWORD dw; DeviceIoControl((HANDLE) _get_osfhandle(_fileno(file)), FSCTL_SET_SPARSE, 0, 0, 0, 0, &dw, 0); } 164 # else 165 # define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY) 166 # define SET_SPARSE_FILE_MODE(file) 167 # endif 168 #else 169 # define SET_BINARY_MODE(file) 170 # define SET_SPARSE_FILE_MODE(file) 171 #endif 172 173 174 #ifndef ZSTD_SPARSE_DEFAULT 175 # if (defined(__APPLE__) && defined(__MACH__)) 176 # define ZSTD_SPARSE_DEFAULT 0 177 # else 178 # define ZSTD_SPARSE_DEFAULT 1 179 # endif 180 #endif 181 182 183 #ifndef ZSTD_START_SYMBOLLIST_FRAME 184 # ifdef __linux__ 185 # define ZSTD_START_SYMBOLLIST_FRAME 2 186 # elif defined __APPLE__ 187 # define ZSTD_START_SYMBOLLIST_FRAME 4 188 # else 189 # define ZSTD_START_SYMBOLLIST_FRAME 0 190 # endif 191 #endif 192 193 194 #ifndef ZSTD_SETPRIORITY_SUPPORT 195 /* mandates presence of <sys/resource.h> and support for setpriority() : http://man7.org/linux/man-pages/man2/setpriority.2.html */ 196 # define ZSTD_SETPRIORITY_SUPPORT (PLATFORM_POSIX_VERSION >= 200112L) 197 #endif 198 199 200 #ifndef ZSTD_NANOSLEEP_SUPPORT 201 /* mandates support of nanosleep() within <time.h> : http://man7.org/linux/man-pages/man2/nanosleep.2.html */ 202 # if (defined(__linux__) && (PLATFORM_POSIX_VERSION >= 199309L)) \ 203 || (PLATFORM_POSIX_VERSION >= 200112L) 204 # define ZSTD_NANOSLEEP_SUPPORT 1 205 # else 206 # define ZSTD_NANOSLEEP_SUPPORT 0 207 # endif 208 #endif 209 210 211 #if defined (__cplusplus) 212 } 213 #endif 214 215 #endif /* PLATFORM_H_MODULE */ 216