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Every file the core touches goes through libretro-common's filestream, path and dirent layers, taken from RetroArch: vfs_hybrid opens local paths with libretro-common's own implementation and hands URI paths (and, on Android, anything a local open cannot reach) to the frontend's VFS. File::IOFile and File::DirectIOFile sit on RFILE, and FileUtil, FileSearch and the directory walks on path_stat, path_mkdir and retro_opendir. Dolphin's fopen, POSIX and Win32 file code, std::filesystem and std::fstream are gone, with the dual VFS paths and the core option that chose between them. Files opened for reading alone are memory-mapped where the platform can: reads copy straight out of the page cache, DirectIOFile's offset reads on one mapped object are thread safe, and GetMappedPtr(), View() and Prefetch() lend and warm without a copy. Text files are read a line at a time through File::LineReader, lent from the mapping or a window refilled a block at a time, never a byte at a time; JSON is parsed straight from the mapping. Ini files and the cheat file are built in memory and written once, an ini only when it changed and then atomically.
149 lines
4.8 KiB
C++
149 lines
4.8 KiB
C++
/* Copyright (C) 2010-2020 The RetroArch team
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*
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* ---------------------------------------------------------------------------------------
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* The following license statement only applies to this file (msvc.h).
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* ---------------------------------------------------------------------------------------
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*
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* Permission is hereby granted, free of charge,
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* to any person obtaining a copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef __LIBRETRO_SDK_COMPAT_MSVC_H
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#define __LIBRETRO_SDK_COMPAT_MSVC_H
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#ifdef _MSC_VER
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Pre-MSVC 2015 compilers don't implement snprintf, vsnprintf in a cross-platform manner. */
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#if _MSC_VER < 1900
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#include <stdio.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#ifndef snprintf
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#define snprintf c99_snprintf_retro__
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#endif
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int c99_snprintf_retro__(char *s, size_t len, const char *format, ...);
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#ifndef vsnprintf
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#define vsnprintf c99_vsnprintf_retro__
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#endif
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int c99_vsnprintf_retro__(char *s, size_t len, const char *format, va_list ap);
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#endif
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/* strtoll/strtoull are C99. The CRT grew _strtoi64/_strtoui64 in Visual
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* Studio 2005, and those take the same three arguments with the same
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* meaning, so for 2005 and later the mapping is exact. Visual C++ 6.0,
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* 2002 and 2003 have neither; _atoi64 is not a stand-in for them because
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* it accepts no base and reports no end pointer, so compat_strtoll.c
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* supplies a real implementation instead. */
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#if _MSC_VER >= 1900
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/* The UCRT has the real thing; do not shadow it with a macro,
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* which would also catch std::strtoll in C++ translation units. */
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#elif _MSC_VER >= 1400
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#ifndef strtoll
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#define strtoll _strtoi64
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#endif
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#ifndef strtoull
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#define strtoull _strtoui64
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#endif
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#else
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__int64 strtoll_retro__(const char *nptr, char **endptr, int base);
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unsigned __int64 strtoull_retro__(const char *nptr, char **endptr, int base);
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#ifndef strtoll
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#define strtoll strtoll_retro__
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#endif
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#ifndef strtoull
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#define strtoull strtoull_retro__
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#endif
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#endif
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#ifdef __cplusplus
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}
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#endif
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#undef UNICODE /* Do not bother with UNICODE at this time. */
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#include <direct.h>
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#include <stddef.h>
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#define _USE_MATH_DEFINES
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#include <math.h>
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/* Python headers defines ssize_t and sets HAVE_SSIZE_T.
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* Cannot duplicate these efforts.
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*/
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#ifndef HAVE_SSIZE_T
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#if defined(_WIN64)
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typedef __int64 ssize_t;
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#elif defined(_WIN32)
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typedef int ssize_t;
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#endif
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#endif
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#define mkdir(dirname, unused) _mkdir(dirname)
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#undef strcasecmp
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#define strcasecmp _stricmp
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#undef strncasecmp
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#define strncasecmp _strnicmp
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/* Disable some of the annoying warnings. */
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#pragma warning(disable : 4800)
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#pragma warning(disable : 4805)
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#pragma warning(disable : 4244)
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#pragma warning(disable : 4305)
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#pragma warning(disable : 4146)
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#pragma warning(disable : 4267)
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#pragma warning(disable : 4723)
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#pragma warning(disable : 4996)
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/* roundf and va_copy is available since MSVC 2013 */
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#if _MSC_VER < 1800
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#define roundf(in) (in >= 0.0f ? floorf(in + 0.5f) : ceilf(in - 0.5f))
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#define va_copy(x, y) ((x) = (y))
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#endif
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#if _MSC_VER <= 1310
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#ifndef __cplusplus
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/* VC6 math.h doesn't define some functions when in C mode.
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* Trying to define a prototype gives "undefined reference".
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* But providing an implementation then gives "function already has body".
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* So the equivalent of the implementations from math.h are used as
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* defines here instead, and it seems to work.
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*/
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#define cosf(x) ((float)cos((double)x))
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#define powf(x, y) ((float)pow((double)x, (double)y))
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#define sinf(x) ((float)sin((double)x))
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#define ceilf(x) ((float)ceil((double)x))
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#define floorf(x) ((float)floor((double)x))
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#define sqrtf(x) ((float)sqrt((double)x))
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#define fabsf(x) ((float)fabs((double)(x)))
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#endif
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#endif
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#ifndef PATH_MAX
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#define PATH_MAX _MAX_PATH
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#endif
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#ifndef SIZE_MAX
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#define SIZE_MAX _UI32_MAX
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#endif
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#endif
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#endif
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