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 = -1 for non-Unix e.g. Windows 69 * PLATFORM_POSIX_VERSION = 0 for Unix-like non-POSIX 70 * PLATFORM_POSIX_VERSION >= 1 is equal to found _POSIX_VERSION 71 ***************************************************************/ 72 #if !defined(_WIN32) && (defined(__unix__) || defined(__unix) || (defined(__APPLE__) && defined(__MACH__)) /* UNIX-like OS */ \ 73 || defined(__midipix__) || defined(__VMS)) 74 # if (defined(__APPLE__) && defined(__MACH__)) || defined(__SVR4) || defined(_AIX) || defined(__hpux) /* POSIX.1-2001 (SUSv3) conformant */ \ 75 || defined(__DragonFly__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) /* BSD distros */ 76 # define PLATFORM_POSIX_VERSION 200112L 77 # else 78 # if defined(__linux__) || defined(__linux) 79 # ifndef _POSIX_C_SOURCE 80 # define _POSIX_C_SOURCE 200112L /* use feature test macro */ 81 # endif 82 # endif 83 # include <unistd.h> /* declares _POSIX_VERSION */ 84 # if defined(_POSIX_VERSION) /* POSIX compliant */ 85 # define PLATFORM_POSIX_VERSION _POSIX_VERSION 86 # else 87 # define PLATFORM_POSIX_VERSION 0 88 # endif 89 # endif 90 #endif 91 #if !defined(PLATFORM_POSIX_VERSION) 92 # define PLATFORM_POSIX_VERSION -1 93 #endif 94 95 96 /*-********************************************* 97 * Detect if isatty() and fileno() are available 98 ************************************************/ 99 #if (defined(__linux__) && (PLATFORM_POSIX_VERSION >= 1)) || (PLATFORM_POSIX_VERSION >= 200112L) || defined(__DJGPP__) 100 # include <unistd.h> /* isatty */ 101 # define IS_CONSOLE(stdStream) isatty(fileno(stdStream)) 102 #elif defined(MSDOS) || defined(OS2) || defined(__CYGWIN__) 103 # include <io.h> /* _isatty */ 104 # define IS_CONSOLE(stdStream) _isatty(_fileno(stdStream)) 105 #elif defined(WIN32) || defined(_WIN32) 106 # include <io.h> /* _isatty */ 107 # include <windows.h> /* DeviceIoControl, HANDLE, FSCTL_SET_SPARSE */ 108 # include <stdio.h> /* FILE */ 109 static __inline int IS_CONSOLE(FILE* stdStream) { 110 DWORD dummy; 111 return _isatty(_fileno(stdStream)) && GetConsoleMode((HANDLE)_get_osfhandle(_fileno(stdStream)), &dummy); 112 } 113 #else 114 # define IS_CONSOLE(stdStream) 0 115 #endif 116 117 118 /****************************** 119 * OS-specific IO behaviors 120 ******************************/ 121 #if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(_WIN32) 122 # include <fcntl.h> /* _O_BINARY */ 123 # include <io.h> /* _setmode, _fileno, _get_osfhandle */ 124 # if !defined(__DJGPP__) 125 # include <windows.h> /* DeviceIoControl, HANDLE, FSCTL_SET_SPARSE */ 126 # include <winioctl.h> /* FSCTL_SET_SPARSE */ 127 # define SET_BINARY_MODE(file) { int const unused=_setmode(_fileno(file), _O_BINARY); (void)unused; } 128 # define SET_SPARSE_FILE_MODE(file) { DWORD dw; DeviceIoControl((HANDLE) _get_osfhandle(_fileno(file)), FSCTL_SET_SPARSE, 0, 0, 0, 0, &dw, 0); } 129 # else 130 # define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY) 131 # define SET_SPARSE_FILE_MODE(file) 132 # endif 133 #else 134 # define SET_BINARY_MODE(file) 135 # define SET_SPARSE_FILE_MODE(file) 136 #endif 137 138 139 #ifndef ZSTD_SPARSE_DEFAULT 140 # if (defined(__APPLE__) && defined(__MACH__)) 141 # define ZSTD_SPARSE_DEFAULT 0 142 # else 143 # define ZSTD_SPARSE_DEFAULT 1 144 # endif 145 #endif 146 147 148 #if defined (__cplusplus) 149 } 150 #endif 151 152 #endif /* PLATFORM_H_MODULE */ 153