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author卜部昌平 <shyouhei@ruby-lang.org>2020-05-08 18:10:13 +0900
committer卜部昌平 <shyouhei@ruby-lang.org>2020-05-11 09:24:08 +0900
commitb85fd1d690b65efaa126cf9c24da73f31eee7a4e (patch)
treee9bb5dbc7cea460fa8f209308c798eb783a33167 /include/ruby/internal/attr/forceinline.h
parent0d88fe3a7278e3dab2675c1fe2c0f184d0624da2 (diff)
mv include/ruby/{impl,internal}
Devs do not love "impl".
Notes
Notes: Merged: https://github.com/ruby/ruby/pull/3079
Diffstat (limited to 'include/ruby/internal/attr/forceinline.h')
-rw-r--r--include/ruby/internal/attr/forceinline.h40
1 files changed, 40 insertions, 0 deletions
diff --git a/include/ruby/internal/attr/forceinline.h b/include/ruby/internal/attr/forceinline.h
new file mode 100644
index 0000000000..8d60a63437
--- /dev/null
+++ b/include/ruby/internal/attr/forceinline.h
@@ -0,0 +1,40 @@
+#ifndef RBIMPL_ATTR_FORCEINLINE_H /*-*-C++-*-vi:se ft=cpp:*/
+#define RBIMPL_ATTR_FORCEINLINE_H
+/**
+ * @file
+ * @author Ruby developers <ruby-core@ruby-lang.org>
+ * @copyright This file is a part of the programming language Ruby.
+ * Permission is hereby granted, to either redistribute and/or
+ * modify this file, provided that the conditions mentioned in the
+ * file COPYING are met. Consult the file for details.
+ * @warning Symbols prefixed with either `RBIMPL` or `rbimpl` are
+ * implementation details. Don't take them as canon. They could
+ * rapidly appear then vanish. The name (path) of this header file
+ * is also an implementation detail. Do not expect it to persist
+ * at the place it is now. Developers are free to move it anywhere
+ * anytime at will.
+ * @note To ruby-core: remember that this header can be possibly
+ * recursively included from extension libraries written in C++.
+ * Do not expect for instance `__VA_ARGS__` is always available.
+ * We assume C99 for ruby itself but we don't assume languages of
+ * extension libraries. They could be written in C++98.
+ * @brief Defines #RBIMPL_ATTR_FORCEINLINE.
+ */
+#include "ruby/impl/compiler_since.h"
+#include "ruby/impl/has/attribute.h"
+
+/**
+ * Wraps (or simulates) `__forceinline`. MSVC complains on declarations like
+ * `static inline __forceinline void foo()`. It seems MSVC's `inline` and
+ * `__forceinline` are mutually exclusive. We have to mimic that behaviour for
+ * non-MSVC compilers.
+ */
+#if RBIMPL_COMPILER_SINCE(MSVC, 12, 0, 0)
+# define RBIMPL_ATTR_FORCEINLINE() __forceinline
+#elif RBIMPL_HAS_ATTRIBUTE(always_inline)
+# define RBIMPL_ATTR_FORCEINLINE() __attribute__((__always_inline__)) inline
+#else
+# define RBIMPL_ATTR_FORCEINLINE() inline
+#endif
+
+#endif /* RBIMPL_ATTR_FORCEINLINE_H */