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According to MSVC manual (*1), cl.exe can skip including a header file when that: - contains #pragma once, or - starts with #ifndef, or - starts with #if ! defined. GCC has a similar trick (*2), but it acts more stricter (e. g. there must be _no tokens_ outside of #ifndef...#endif). Sun C lacked #pragma once for a looong time. Oracle Developer Studio 12.5 finally implemented it, but we cannot assume such recent version. This changeset modifies header files so that each of them include strictly one #ifndef...#endif. I believe this is the most portable way to trigger compiler optimizations. [Bug #16770] *1: https://docs.microsoft.com/en-us/cpp/preprocessor/once *2: https://gcc.gnu.org/onlinedocs/cppinternals/Guard-Macros.html
60 lines
2 KiB
C
60 lines
2 KiB
C
#ifndef INTERNAL_OBJECT_H /*-*-C-*-vi:se ft=c:*/
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#define INTERNAL_OBJECT_H
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/**
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* @file
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* @author Ruby developers <ruby-core@ruby-lang.org>
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* @copyright This file is a part of the programming language Ruby.
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* Permission is hereby granted, to either redistribute and/or
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* modify this file, provided that the conditions mentioned in the
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* file COPYING are met. Consult the file for details.
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* @brief Internal header for Object.
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*/
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#include "ruby/ruby.h" /* for VALUE */
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/* object.c */
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VALUE rb_class_search_ancestor(VALUE klass, VALUE super);
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NORETURN(void rb_undefined_alloc(VALUE klass));
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double rb_num_to_dbl(VALUE val);
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VALUE rb_obj_dig(int argc, VALUE *argv, VALUE self, VALUE notfound);
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VALUE rb_immutable_obj_clone(int, VALUE *, VALUE);
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VALUE rb_check_convert_type_with_id(VALUE,int,const char*,ID);
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int rb_bool_expected(VALUE, const char *);
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static inline void RBASIC_CLEAR_CLASS(VALUE obj);
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static inline void RBASIC_SET_CLASS_RAW(VALUE obj, VALUE klass);
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static inline void RBASIC_SET_CLASS(VALUE obj, VALUE klass);
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RUBY_SYMBOL_EXPORT_BEGIN
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/* object.c (export) */
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int rb_opts_exception_p(VALUE opts, int default_value);
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RUBY_SYMBOL_EXPORT_END
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MJIT_SYMBOL_EXPORT_BEGIN
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CONSTFUNC(VALUE rb_obj_equal(VALUE obj1, VALUE obj2));
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CONSTFUNC(VALUE rb_obj_not(VALUE obj));
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VALUE rb_obj_not_equal(VALUE obj1, VALUE obj2);
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void rb_obj_copy_ivar(VALUE dest, VALUE obj);
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VALUE rb_false(VALUE obj);
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VALUE rb_convert_type_with_id(VALUE v, int t, const char* nam, ID mid);
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MJIT_SYMBOL_EXPORT_END
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static inline void
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RBASIC_SET_CLASS_RAW(VALUE obj, VALUE klass)
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{
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struct { VALUE flags; VALUE klass; } *ptr = (void *)obj;
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ptr->klass = klass;
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}
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static inline void
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RBASIC_CLEAR_CLASS(VALUE obj)
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{
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RBASIC_SET_CLASS_RAW(obj, 0);
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}
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static inline void
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RBASIC_SET_CLASS(VALUE obj, VALUE klass)
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{
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VALUE oldv = RBASIC_CLASS(obj);
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RBASIC_SET_CLASS_RAW(obj, klass);
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RB_OBJ_WRITTEN(obj, oldv, klass);
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}
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#endif /* INTERNAL_OBJECT_H */
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