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separate rb_random_t

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* random.c: separate abstract rb_random_t and rb_random_mt_t for
  Mersenne Twister implementation.

* include/ruby/random.h: the interface for extensions of Random
  class.

* DLL imported symbol reference is not constant on Windows.

* check if properly initialized.
This commit is contained in:
Nobuyoshi Nakada 2016-05-07 11:51:14 +09:00
parent f4d5273989
commit af5e87ab21
Notes: git 2020-09-07 20:08:35 +09:00
8 changed files with 774 additions and 121 deletions
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80
include/ruby/random.h Normal file
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#ifndef RUBY_RANDOM_H
#define RUBY_RANDOM_H 1
/**
* @file
* @date Sat May 7 11:51:14 JST 2016
* @copyright 2007-2020 Yukihiro Matsumoto
* @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.
*/
#include "ruby/ruby.h"
#if defined(__cplusplus)
extern "C" {
#if 0
} /* satisfy cc-mode */
#endif
#endif
RUBY_SYMBOL_EXPORT_BEGIN
typedef struct {
VALUE seed;
} rb_random_t;
typedef void rb_random_init_func(rb_random_t *, const uint32_t *, size_t);
typedef unsigned int rb_random_get_int32_func(rb_random_t *);
typedef void rb_random_get_bytes_func(rb_random_t *, void *, size_t);
typedef struct {
size_t default_seed_bits;
rb_random_init_func *init;
rb_random_get_int32_func *get_int32;
rb_random_get_bytes_func *get_bytes;
} rb_random_interface_t;
#define rb_rand_if(obj) \
((const rb_random_interface_t *)RTYPEDDATA_TYPE(obj)->data)
#define RB_RANDOM_INTERFACE_DECLARE(prefix) \
static void prefix##_init(rb_random_t *, const uint32_t *, size_t); \
static unsigned int prefix##_get_int32(rb_random_t *); \
static void prefix##_get_bytes(rb_random_t *, void *, size_t); \
/* end */
#define RB_RANDOM_INTERFACE_DEFINE(prefix) \
prefix##_init, \
prefix##_get_int32, \
prefix##_get_bytes, \
/* end */
#if defined _WIN32 && !defined __CYGWIN__
typedef rb_data_type_t rb_random_data_type_t;
# define RB_RANDOM_PARENT 0
# define RB_RANDOM_DATA_INIT_PARENT(random_data) \
(random_data.parent = &rb_random_data_type)
#else
typedef const rb_data_type_t rb_random_data_type_t;
# define RB_RANDOM_PARENT &rb_random_data_type
# define RB_RANDOM_DATA_INIT_PARENT(random_data) ((void)0)
#endif
void rb_random_mark(void *ptr);
double rb_int_pair_to_real_exclusive(uint32_t a, uint32_t b);
double rb_int_pair_to_real_inclusive(uint32_t a, uint32_t b);
void rb_rand_bytes_int32(rb_random_get_int32_func *, rb_random_t *, void *, size_t);
RUBY_EXTERN const rb_data_type_t rb_random_data_type;
RUBY_SYMBOL_EXPORT_END
#if defined(__cplusplus)
#if 0
{ /* satisfy cc-mode */
#endif
} /* extern "C" { */
#endif
#endif /* RUBY_RANDOM_H */