mirror of
				https://github.com/ruby/ruby.git
				synced 2022-11-09 12:17:21 -05:00 
			
		
		
		
	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
		
			
				
	
	
		
			33 lines
		
	
	
	
		
			1.2 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			33 lines
		
	
	
	
		
			1.2 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
#ifndef INTERNAL_EVAL_H                                  /*-*-C-*-vi:se ft=c:*/
 | 
						|
#define INTERNAL_EVAL_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.
 | 
						|
 * @brief      Internal header for the evaluator.
 | 
						|
 * @note       There  also  is  eval_intern.h, which  is  evaluator's  internal
 | 
						|
 *             header (related to this file, but not the same role).
 | 
						|
 */
 | 
						|
#include "ruby/ruby.h"          /* for ID */
 | 
						|
 | 
						|
#define id_signo ruby_static_id_signo
 | 
						|
#define id_status ruby_static_id_status
 | 
						|
 | 
						|
/* eval.c */
 | 
						|
extern ID ruby_static_id_signo;
 | 
						|
extern ID ruby_static_id_status;
 | 
						|
VALUE rb_refinement_module_get_refined_class(VALUE module);
 | 
						|
void rb_class_modify_check(VALUE);
 | 
						|
NORETURN(VALUE rb_f_raise(int argc, VALUE *argv));
 | 
						|
 | 
						|
/* eval_error.c */
 | 
						|
VALUE rb_get_backtrace(VALUE info);
 | 
						|
 | 
						|
/* eval_jump.c */
 | 
						|
void rb_call_end_proc(VALUE data);
 | 
						|
void rb_mark_end_proc(void);
 | 
						|
 | 
						|
#endif /* INTERNAL_EVAL_H */
 |