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