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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
94 lines
3 KiB
C++
94 lines
3 KiB
C++
#ifndef RUBY3_INTERPRETER_H /*-*-C++-*-vi:se ft=cpp:*/
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#define RUBY3_INTERPRETER_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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* @warning Symbols prefixed with either `RUBY3` or `ruby3` are
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* implementation details. Don't take them as canon. They could
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* rapidly appear then vanish. The name (path) of this header file
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* is also an implementation detail. Do not expect it to persist
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* at the place it is now. Developers are free to move it anywhere
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* anytime at will.
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* @note To ruby-core: remember that this header can be possibly
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* recursively included from extension libraries written in C++.
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* Do not expect for instance `__VA_ARGS__` is always available.
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* We assume C99 for ruby itself but we don't assume languages of
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* extension libraries. They could be written in C++98.
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* @brief Interpreter embedding APIs.
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*/
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#include "ruby/3/attr/noreturn.h"
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#include "ruby/3/dllexport.h"
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#include "ruby/3/value.h"
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RUBY3_SYMBOL_EXPORT_BEGIN()
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/**
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* @defgroup embed CRuby Embedding APIs
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* CRuby interpreter APIs. These are APIs to embed MRI interpreter into your
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* program.
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* These functions are not a part of Ruby extension library API.
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* Extension libraries of Ruby should not depend on these functions.
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* @{
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*/
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/** @defgroup ruby1 ruby(1) implementation
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* A part of the implementation of ruby(1) command.
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* Other programs that embed Ruby interpreter do not always need to use these
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* functions.
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* @{
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*/
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void ruby_sysinit(int *argc, char ***argv);
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void ruby_init(void);
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void* ruby_options(int argc, char** argv);
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int ruby_executable_node(void *n, int *status);
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int ruby_run_node(void *n);
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/* version.c */
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void ruby_show_version(void);
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#ifndef ruby_show_copyright
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void ruby_show_copyright(void);
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#endif
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/*! A convenience macro to call ruby_init_stack(). Must be placed just after
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* variable declarations */
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#define RUBY_INIT_STACK \
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VALUE variable_in_this_stack_frame; \
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ruby_init_stack(&variable_in_this_stack_frame);
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/*! @} */
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void ruby_init_stack(volatile VALUE*);
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int ruby_setup(void);
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int ruby_cleanup(volatile int);
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void ruby_finalize(void);
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RUBY3_ATTR_NORETURN()
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void ruby_stop(int);
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void ruby_set_stack_size(size_t);
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int ruby_stack_check(void);
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size_t ruby_stack_length(VALUE**);
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int ruby_exec_node(void *n);
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void ruby_script(const char* name);
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void ruby_set_script_name(VALUE name);
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void ruby_prog_init(void);
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void ruby_set_argv(int, char**);
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void *ruby_process_options(int, char**);
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void ruby_init_loadpath(void);
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void ruby_incpush(const char*);
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void ruby_sig_finalize(void);
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/*! @} */
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RUBY3_SYMBOL_EXPORT_END()
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#endif /* RUBY3_INTERPRETER_H */
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