diff options
Diffstat (limited to 'prism/compiler/filesystem.h')
| -rw-r--r-- | prism/compiler/filesystem.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/prism/compiler/filesystem.h b/prism/compiler/filesystem.h new file mode 100644 index 0000000000..f988909db8 --- /dev/null +++ b/prism/compiler/filesystem.h @@ -0,0 +1,32 @@ +/** + * @file compiler/filesystem.h + * + * Platform detection for mmap and filesystem support. + */ +#ifndef PRISM_COMPILER_FILESYSTEM_H +#define PRISM_COMPILER_FILESYSTEM_H + +/** + * In general, libc for embedded systems does not support memory-mapped files. + * If the target platform is POSIX or Windows, we can map a file in memory and + * read it in a more efficient manner. + */ +#ifdef _WIN32 +# define PRISM_HAS_MMAP +#else +# include <unistd.h> +# ifdef _POSIX_MAPPED_FILES +# define PRISM_HAS_MMAP +# endif +#endif + +/** + * If PRISM_HAS_NO_FILESYSTEM is defined, then we want to exclude all filesystem + * related code from the library. All filesystem related code should be guarded + * by PRISM_HAS_FILESYSTEM. + */ +#ifndef PRISM_HAS_NO_FILESYSTEM +# define PRISM_HAS_FILESYSTEM +#endif + +#endif |