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| author | HASUMI Hitoshi <[email protected]> | 2024-01-22 15:17:40 +0900 |
|---|---|---|
| committer | git <[email protected]> | 2024-02-20 14:21:16 +0000 |
| commit | 15b53e901c15225bdb2d67abb6f2aabf2e93cc4e (patch) | |
| tree | 7b217108323944eeaeb1b1c1e67fa7e1f9ac4bc9 /prism/defines.h | |
| parent | c22cb960cf5333e4789489be16db42dc805395b0 (diff) | |
[ruby/prism] Use `_POSIX_MAPPED_FILES` and `_WIN32` to know if memory map interface is available in the target platform
https://github.com/ruby/prism/commit/88e2ff52d4
Diffstat (limited to 'prism/defines.h')
| -rw-r--r-- | prism/defines.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/prism/defines.h b/prism/defines.h index c9af5fa42c..8fa6a6a3d1 100644 --- a/prism/defines.h +++ b/prism/defines.h @@ -99,4 +99,13 @@ # define PM_STATIC_ASSERT(line, condition, message) typedef char PM_CONCATENATE(static_assert_, line)[(condition) ? 1 : -1] #endif +/** + * 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. + */ +#if defined(_POSIX_MAPPED_FILES) || defined(_WIN32) +# define PRISM_HAS_MMAP +#endif + #endif |