1 /* 2 * Copyright (c) 2016-present, 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 # if (_MSC_VER <= 1800) /* 1800 == Visual Studio 2013 */ 26 # define _CRT_SECURE_NO_DEPRECATE /* VS2005 - must be declared before <io.h> and <windows.h> */ 27 # define snprintf sprintf_s /* snprintf unsupported by Visual <= 2013 */ 28 # endif 29 # pragma warning(disable : 4127) /* disable: C4127: conditional expression is constant */ 30 #endif 31 32 33 /* ************************************** 34 * Detect 64-bit OS 35 * http://nadeausoftware.com/articles/2012/02/c_c_tip_how_detect_processor_type_using_compiler_predefined_macros 36 ****************************************/ 37 #if defined __ia64 || defined _M_IA64 /* Intel Itanium */ \ 38 || defined __powerpc64__ || defined __ppc64__ || defined __PPC64__ /* POWER 64-bit */ \ 39 || (defined __sparc && (defined __sparcv9 || defined __sparc_v9__ || defined __arch64__)) || defined __sparc64__ /* SPARC 64-bit */ \ 40 || defined __x86_64__s || defined _M_X64 /* x86 64-bit */ \ 41 || defined __arm64__ || defined __aarch64__ || defined __ARM64_ARCH_8__ /* ARM 64-bit */ \ 42 || (defined __mips && (__mips == 64 || __mips == 4 || __mips == 3)) /* MIPS 64-bit */ \ 43 || defined _LP64 || defined __LP64__ /* NetBSD, OpenBSD */ || defined __64BIT__ /* AIX */ || defined _ADDR64 /* Cray */ \ 44 || (defined __SIZEOF_POINTER__ && __SIZEOF_POINTER__ == 8) /* gcc */ 45 # if !defined(__64BIT__) 46 # define __64BIT__ 1 47 # endif 48 #endif 49 50 51 /* ********************************************************* 52 * Turn on Large Files support (>4GB) for 32-bit Linux/Unix 53 ***********************************************************/ 54 #if !defined(__64BIT__) || defined(__MINGW32__) /* No point defining Large file for 64 bit but MinGW-w64 requires it */ 55 # if !defined(_FILE_OFFSET_BITS) 56 # define _FILE_OFFSET_BITS 64 /* turn off_t into a 64-bit type for ftello, fseeko */ 57 # endif 58 # if !defined(_LARGEFILE_SOURCE) /* obsolete macro, replaced with _FILE_OFFSET_BITS */ 59 # define _LARGEFILE_SOURCE 1 /* Large File Support extension (LFS) - fseeko, ftello */ 60 # endif 61 # if defined(_AIX) || defined(__hpux) 62 # define _LARGE_FILES /* Large file support on 32-bits AIX and HP-UX */ 63 # endif 64 #endif 65 66 67 /* ************************************************************ 68 * Detect POSIX version 69 * PLATFORM_POSIX_VERSION = 0 for non-Unix e.g. Windows 70 * PLATFORM_POSIX_VERSION = 1 for Unix-like but non-POSIX 71 * PLATFORM_POSIX_VERSION > 1 is equal to found _POSIX_VERSION 72 * Value of PLATFORM_POSIX_VERSION can be forced on command line 73 ***************************************************************/ 74 #ifndef PLATFORM_POSIX_VERSION 75 76 # if (defined(__APPLE__) && defined(__MACH__)) || defined(__SVR4) || defined(_AIX) || defined(__hpux) /* POSIX.1-2001 (SUSv3) conformant */ \ 77 || defined(__DragonFly__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) /* BSD distros */ 78 /* exception rule : force posix version to 200112L, 79 * note: it's better to use unistd.h's _POSIX_VERSION whenever possible */ 80 # define PLATFORM_POSIX_VERSION 200112L 81 82 /* try to determine posix version through official unistd.h's _POSIX_VERSION (http://pubs.opengroup.org/onlinepubs/7908799/xsh/unistd.h.html). 83 * note : there is no simple way to know in advance if <unistd.h> is present or not on target system, 84 * Posix specification mandates its presence and its content, but target system must respect this spec. 85 * It's necessary to _not_ #include <unistd.h> whenever target OS is not unix-like 86 * otherwise it will block preprocessing stage. 87 * The following list of build macros tries to "guess" if target OS is likely unix-like, and therefore can #include <unistd.h> 88 */ 89 # elif !defined(_WIN32) \ 90 && ( defined(__unix__) || defined(__unix) \ 91 || defined(__midipix__) || defined(__VMS) || defined(__HAIKU__) ) 92 93 # if defined(__linux__) || defined(__linux) 94 # ifndef _POSIX_C_SOURCE 95 # define _POSIX_C_SOURCE 200112L /* feature test macro : https://www.gnu.org/software/libc/manual/html_node/Feature-Test-Macros.html */ 96 # endif 97 # endif 98 # include <unistd.h> /* declares _POSIX_VERSION */ 99 # if defined(_POSIX_VERSION) /* POSIX compliant */ 100 # define PLATFORM_POSIX_VERSION _POSIX_VERSION 101 # else 102 # define PLATFORM_POSIX_VERSION 1 103 # endif 104 105 # else /* non-unix target platform (like Windows) */ 106 # define PLATFORM_POSIX_VERSION 0 107 # endif 108 109 #endif /* PLATFORM_POSIX_VERSION */ 110 111 112 /*-********************************************* 113 * Detect if isatty() and fileno() are available 114 ************************************************/ 115 #if (defined(__linux__) && (PLATFORM_POSIX_VERSION > 1)) \ 116 || (PLATFORM_POSIX_VERSION >= 200112L) \ 117 || defined(__DJGPP__) \ 118 || defined(__MSYS__) 119 # include <unistd.h> /* isatty */ 120 # define IS_CONSOLE(stdStream) isatty(fileno(stdStream)) 121 #elif defined(MSDOS) || defined(OS2) || defined(__CYGWIN__) 122 # include <io.h> /* _isatty */ 123 # define IS_CONSOLE(stdStream) _isatty(_fileno(stdStream)) 124 #elif defined(WIN32) || defined(_WIN32) 125 # include <io.h> /* _isatty */ 126 # include <windows.h> /* DeviceIoControl, HANDLE, FSCTL_SET_SPARSE */ 127 # include <stdio.h> /* FILE */ 128 static __inline int IS_CONSOLE(FILE* stdStream) { 129 DWORD dummy; 130 return _isatty(_fileno(stdStream)) && GetConsoleMode((HANDLE)_get_osfhandle(_fileno(stdStream)), &dummy); 131 } 132 #else 133 # define IS_CONSOLE(stdStream) 0 134 #endif 135 136 137 /****************************** 138 * OS-specific IO behaviors 139 ******************************/ 140 #if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(_WIN32) 141 # include <fcntl.h> /* _O_BINARY */ 142 # include <io.h> /* _setmode, _fileno, _get_osfhandle */ 143 # if !defined(__DJGPP__) 144 # include <windows.h> /* DeviceIoControl, HANDLE, FSCTL_SET_SPARSE */ 145 # include <winioctl.h> /* FSCTL_SET_SPARSE */ 146 # define SET_BINARY_MODE(file) { int const unused=_setmode(_fileno(file), _O_BINARY); (void)unused; } 147 # define SET_SPARSE_FILE_MODE(file) { DWORD dw; DeviceIoControl((HANDLE) _get_osfhandle(_fileno(file)), FSCTL_SET_SPARSE, 0, 0, 0, 0, &dw, 0); } 148 # else 149 # define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY) 150 # define SET_SPARSE_FILE_MODE(file) 151 # endif 152 #else 153 # define SET_BINARY_MODE(file) 154 # define SET_SPARSE_FILE_MODE(file) 155 #endif 156 157 158 #ifndef ZSTD_SPARSE_DEFAULT 159 # if (defined(__APPLE__) && defined(__MACH__)) 160 # define ZSTD_SPARSE_DEFAULT 0 161 # else 162 # define ZSTD_SPARSE_DEFAULT 1 163 # endif 164 #endif 165 166 167 #ifndef ZSTD_START_SYMBOLLIST_FRAME 168 # ifdef __linux__ 169 # define ZSTD_START_SYMBOLLIST_FRAME 2 170 # elif defined __APPLE__ 171 # define ZSTD_START_SYMBOLLIST_FRAME 4 172 # else 173 # define ZSTD_START_SYMBOLLIST_FRAME 0 174 # endif 175 #endif 176 177 178 #ifndef ZSTD_SETPRIORITY_SUPPORT 179 /* mandates presence of <sys/resource.h> and support for setpriority() : http://man7.org/linux/man-pages/man2/setpriority.2.html */ 180 # define ZSTD_SETPRIORITY_SUPPORT (PLATFORM_POSIX_VERSION >= 200112L) 181 #endif 182 183 184 #ifndef ZSTD_NANOSLEEP_SUPPORT 185 /* mandates support of nanosleep() within <time.h> : http://man7.org/linux/man-pages/man2/nanosleep.2.html */ 186 # if (defined(__linux__) && (PLATFORM_POSIX_VERSION >= 199309L)) \ 187 || (PLATFORM_POSIX_VERSION >= 200112L) 188 # define ZSTD_NANOSLEEP_SUPPORT 1 189 # else 190 # define ZSTD_NANOSLEEP_SUPPORT 0 191 # endif 192 #endif 193 194 195 #if defined (__cplusplus) 196 } 197 #endif 198 199 #endif /* PLATFORM_H_MODULE */ 200