220 lines
8.7 KiB
C
220 lines
8.7 KiB
C
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/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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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 PLATFORM_H_MODULE
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#define PLATFORM_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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* Compiler Options
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****************************************/
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#if defined(_MSC_VER)
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# define _CRT_SECURE_NO_WARNINGS /* Disable Visual Studio warning messages for fopen, strncpy, strerror */
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# define _CRT_NONSTDC_NO_WARNINGS /* Disable C4996 complaining about posix function names */
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# if (_MSC_VER <= 1800) /* 1800 == Visual Studio 2013 */
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# define _CRT_SECURE_NO_DEPRECATE /* VS2005 - must be declared before <io.h> and <windows.h> */
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# define snprintf sprintf_s /* snprintf unsupported by Visual <= 2013 */
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# endif
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# pragma warning(disable : 4127) /* disable: C4127: conditional expression is constant */
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#endif
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/* **************************************
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* Detect 64-bit OS
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* https://nadeausoftware.com/articles/2012/02/c_c_tip_how_detect_processor_type_using_compiler_predefined_macros
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****************************************/
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#if defined __ia64 || defined _M_IA64 /* Intel Itanium */ \
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|| defined __powerpc64__ || defined __ppc64__ || defined __PPC64__ /* POWER 64-bit */ \
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|| (defined __sparc && (defined __sparcv9 || defined __sparc_v9__ || defined __arch64__)) || defined __sparc64__ /* SPARC 64-bit */ \
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|| defined __x86_64__s || defined _M_X64 /* x86 64-bit */ \
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|| defined __arm64__ || defined __aarch64__ || defined __ARM64_ARCH_8__ /* ARM 64-bit */ \
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|| (defined __mips && (__mips == 64 || __mips == 4 || __mips == 3)) /* MIPS 64-bit */ \
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|| defined _LP64 || defined __LP64__ /* NetBSD, OpenBSD */ || defined __64BIT__ /* AIX */ || defined _ADDR64 /* Cray */ \
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|| (defined __SIZEOF_POINTER__ && __SIZEOF_POINTER__ == 8) /* gcc */
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# if !defined(__64BIT__)
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# define __64BIT__ 1
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# endif
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#endif
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/* *********************************************************
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* Turn on Large Files support (>4GB) for 32-bit Linux/Unix
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***********************************************************/
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#if !defined(__64BIT__) || defined(__MINGW32__) /* No point defining Large file for 64 bit but MinGW-w64 requires it */
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# if !defined(_FILE_OFFSET_BITS)
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# define _FILE_OFFSET_BITS 64 /* turn off_t into a 64-bit type for ftello, fseeko */
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# endif
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# if !defined(_LARGEFILE_SOURCE) /* obsolete macro, replaced with _FILE_OFFSET_BITS */
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# define _LARGEFILE_SOURCE 1 /* Large File Support extension (LFS) - fseeko, ftello */
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# endif
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# if defined(_AIX) || defined(__hpux)
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# define _LARGE_FILES /* Large file support on 32-bits AIX and HP-UX */
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# endif
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#endif
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/* ************************************************************
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* Detect POSIX version
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* PLATFORM_POSIX_VERSION = 0 for non-Unix e.g. Windows
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* PLATFORM_POSIX_VERSION = 1 for Unix-like but non-POSIX
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* PLATFORM_POSIX_VERSION > 1 is equal to found _POSIX_VERSION
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* Value of PLATFORM_POSIX_VERSION can be forced on command line
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***************************************************************/
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#ifndef PLATFORM_POSIX_VERSION
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# if (defined(__APPLE__) && defined(__MACH__)) || defined(__SVR4) || defined(_AIX) || defined(__hpux) /* POSIX.1-2001 (SUSv3) conformant */ \
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|| defined(__DragonFly__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) /* BSD distros */
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/* exception rule : force posix version to 200112L,
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* note: it's better to use unistd.h's _POSIX_VERSION whenever possible */
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# define PLATFORM_POSIX_VERSION 200112L
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/* try to determine posix version through official unistd.h's _POSIX_VERSION (https://pubs.opengroup.org/onlinepubs/7908799/xsh/unistd.h.html).
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* note : there is no simple way to know in advance if <unistd.h> is present or not on target system,
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* Posix specification mandates its presence and its content, but target system must respect this spec.
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* It's necessary to _not_ #include <unistd.h> whenever target OS is not unix-like
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* otherwise it will block preprocessing stage.
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* The following list of build macros tries to "guess" if target OS is likely unix-like, and therefore can #include <unistd.h>
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*/
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# elif !defined(_WIN32) \
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&& ( defined(__unix__) || defined(__unix) \
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|| defined(_QNX_SOURCE) || defined(__midipix__) || defined(__VMS) || defined(__HAIKU__) )
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# if defined(__linux__) || defined(__linux) || defined(__CYGWIN__)
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# ifndef _POSIX_C_SOURCE
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# define _POSIX_C_SOURCE 200809L /* feature test macro : https://www.gnu.org/software/libc/manual/html_node/Feature-Test-Macros.html */
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# endif
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# endif
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# include <unistd.h> /* declares _POSIX_VERSION */
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# if defined(_POSIX_VERSION) /* POSIX compliant */
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# define PLATFORM_POSIX_VERSION _POSIX_VERSION
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# else
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# define PLATFORM_POSIX_VERSION 1
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# endif
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# ifdef __UCLIBC__
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# ifndef __USE_MISC
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# define __USE_MISC /* enable st_mtim on uclibc */
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# endif
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# endif
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# else /* non-unix target platform (like Windows) */
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# define PLATFORM_POSIX_VERSION 0
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# endif
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#endif /* PLATFORM_POSIX_VERSION */
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#if PLATFORM_POSIX_VERSION > 1
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/* glibc < 2.26 may not expose struct timespec def without this.
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* See issue #1920. */
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# ifndef _ATFILE_SOURCE
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# define _ATFILE_SOURCE
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# endif
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#endif
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/*-*********************************************
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* Detect if isatty() and fileno() are available
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*
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* Note: Use UTIL_isConsole() for the zstd CLI
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* instead, as it allows faking is console for
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* testing.
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************************************************/
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#if (defined(__linux__) && (PLATFORM_POSIX_VERSION > 1)) \
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|| (PLATFORM_POSIX_VERSION >= 200112L) \
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|| defined(__DJGPP__)
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# include <unistd.h> /* isatty */
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# include <stdio.h> /* fileno */
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# define IS_CONSOLE(stdStream) isatty(fileno(stdStream))
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#elif defined(MSDOS) || defined(OS2)
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# include <io.h> /* _isatty */
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# define IS_CONSOLE(stdStream) _isatty(_fileno(stdStream))
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#elif defined(_WIN32)
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# include <io.h> /* _isatty */
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# include <windows.h> /* DeviceIoControl, HANDLE, FSCTL_SET_SPARSE */
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# include <stdio.h> /* FILE */
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static __inline int IS_CONSOLE(FILE* stdStream) {
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DWORD dummy;
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return _isatty(_fileno(stdStream)) && GetConsoleMode((HANDLE)_get_osfhandle(_fileno(stdStream)), &dummy);
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}
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#else
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# define IS_CONSOLE(stdStream) 0
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#endif
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/******************************
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* OS-specific IO behaviors
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******************************/
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#if defined(MSDOS) || defined(OS2) || defined(_WIN32)
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# include <fcntl.h> /* _O_BINARY */
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# include <io.h> /* _setmode, _fileno, _get_osfhandle */
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# if !defined(__DJGPP__)
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# include <windows.h> /* DeviceIoControl, HANDLE, FSCTL_SET_SPARSE */
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# include <winioctl.h> /* FSCTL_SET_SPARSE */
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# define SET_BINARY_MODE(file) { int const unused=_setmode(_fileno(file), _O_BINARY); (void)unused; }
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# define SET_SPARSE_FILE_MODE(file) { DWORD dw; DeviceIoControl((HANDLE) _get_osfhandle(_fileno(file)), FSCTL_SET_SPARSE, 0, 0, 0, 0, &dw, 0); }
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# else
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# define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY)
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# define SET_SPARSE_FILE_MODE(file)
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# endif
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#else
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# define SET_BINARY_MODE(file)
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# define SET_SPARSE_FILE_MODE(file)
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#endif
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#ifndef ZSTD_SPARSE_DEFAULT
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# if (defined(__APPLE__) && defined(__MACH__))
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# define ZSTD_SPARSE_DEFAULT 0
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# else
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# define ZSTD_SPARSE_DEFAULT 1
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# endif
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#endif
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#ifndef ZSTD_START_SYMBOLLIST_FRAME
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# ifdef __linux__
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# define ZSTD_START_SYMBOLLIST_FRAME 2
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# elif defined __APPLE__
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# define ZSTD_START_SYMBOLLIST_FRAME 4
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# else
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# define ZSTD_START_SYMBOLLIST_FRAME 0
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# endif
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#endif
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#ifndef ZSTD_SETPRIORITY_SUPPORT
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/* mandates presence of <sys/resource.h> and support for setpriority() : https://man7.org/linux/man-pages/man2/setpriority.2.html */
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# define ZSTD_SETPRIORITY_SUPPORT (PLATFORM_POSIX_VERSION >= 200112L)
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#endif
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#ifndef ZSTD_NANOSLEEP_SUPPORT
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/* mandates support of nanosleep() within <time.h> : https://man7.org/linux/man-pages/man2/nanosleep.2.html */
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# if (defined(__linux__) && (PLATFORM_POSIX_VERSION >= 199309L)) \
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|| (PLATFORM_POSIX_VERSION >= 200112L)
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# define ZSTD_NANOSLEEP_SUPPORT 1
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# else
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# define ZSTD_NANOSLEEP_SUPPORT 0
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# endif
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#endif
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#if defined (__cplusplus)
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}
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#endif
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#endif /* PLATFORM_H_MODULE */
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