Ruby  2.0.0p451(2014-02-24revision45167)
pointer.c
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1 /* -*- C -*-
2  * $Id$
3  */
4 
5 #include <ruby/ruby.h>
6 #include <ruby/io.h>
7 #include <ctype.h>
8 #include <fiddle.h>
9 
10 #ifdef PRIsVALUE
11 # define RB_OBJ_CLASSNAME(obj) rb_obj_class(obj)
12 # define RB_OBJ_STRING(obj) (obj)
13 #else
14 # define PRIsVALUE "s"
15 # define RB_OBJ_CLASSNAME(obj) rb_obj_classname(obj)
16 # define RB_OBJ_STRING(obj) StringValueCStr(obj)
17 #endif
18 
20 
21 typedef void (*freefunc_t)(void*);
22 
23 struct ptr_data {
24  void *ptr;
25  long size;
27  VALUE wrap[2];
28 };
29 
30 #define RPTR_DATA(obj) ((struct ptr_data *)(DATA_PTR(obj)))
31 
32 static inline freefunc_t
33 get_freefunc(VALUE func, volatile VALUE *wrap)
34 {
35  VALUE addrnum;
36  if (NIL_P(func)) {
37  *wrap = 0;
38  return NULL;
39  }
40  addrnum = rb_Integer(func);
41  *wrap = (addrnum != func) ? func : 0;
42  return (freefunc_t)(VALUE)NUM2PTR(addrnum);
43 }
44 
45 static ID id_to_ptr;
46 
47 static void
48 fiddle_ptr_mark(void *ptr)
49 {
50  struct ptr_data *data = ptr;
51  if (data->wrap[0]) {
52  rb_gc_mark(data->wrap[0]);
53  }
54  if (data->wrap[1]) {
55  rb_gc_mark(data->wrap[1]);
56  }
57 }
58 
59 static void
61 {
62  struct ptr_data *data = ptr;
63  if (data->ptr) {
64  if (data->free) {
65  (*(data->free))(data->ptr);
66  }
67  }
68 }
69 
70 static size_t
71 fiddle_ptr_memsize(const void *ptr)
72 {
73  const struct ptr_data *data = ptr;
74  return data ? sizeof(*data) + data->size : 0;
75 }
76 
78  "fiddle/pointer",
80 };
81 
82 static VALUE
84 {
85  struct ptr_data *data;
86  VALUE val;
87 
88  rb_secure(4);
89  val = TypedData_Make_Struct(klass, struct ptr_data, &fiddle_ptr_data_type, data);
90  data->ptr = ptr;
91  data->free = func;
92  data->size = size;
93  OBJ_TAINT(val);
94 
95  return val;
96 }
97 
98 static VALUE
100 {
101  return rb_fiddle_ptr_new2(rb_cPointer, ptr, size, func);
102 }
103 
104 static VALUE
106 {
107  void *ptr;
108 
109  rb_secure(4);
110  ptr = ruby_xmalloc((size_t)size);
111  memset(ptr,0,(size_t)size);
112  return rb_fiddle_ptr_new(ptr, size, func);
113 }
114 
115 static void *
117 {
118  struct ptr_data *data;
119  void *ptr;
120 
121  if (rb_obj_is_kind_of(val, rb_cPointer)) {
122  TypedData_Get_Struct(val, struct ptr_data, &fiddle_ptr_data_type, data);
123  ptr = data->ptr;
124  }
125  else if (val == Qnil) {
126  ptr = NULL;
127  }
128  else{
129  rb_raise(rb_eTypeError, "Fiddle::Pointer was expected");
130  }
131 
132  return ptr;
133 }
134 
135 static VALUE
137 {
138  VALUE obj;
139  struct ptr_data *data;
140 
141  rb_secure(4);
142  obj = TypedData_Make_Struct(klass, struct ptr_data, &fiddle_ptr_data_type, data);
143  data->ptr = 0;
144  data->size = 0;
145  data->free = 0;
146 
147  return obj;
148 }
149 
150 /*
151  * call-seq:
152  * Fiddle::Pointer.new(address) => fiddle_cptr
153  * new(address, size) => fiddle_cptr
154  * new(address, size, freefunc) => fiddle_cptr
155  *
156  * Create a new pointer to +address+ with an optional +size+ and +freefunc+.
157  *
158  * +freefunc+ will be called when the instance is garbage collected.
159  */
160 static VALUE
162 {
163  VALUE ptr, sym, size, wrap = 0, funcwrap = 0;
164  struct ptr_data *data;
165  void *p = NULL;
166  freefunc_t f = NULL;
167  long s = 0;
168 
169  if (rb_scan_args(argc, argv, "12", &ptr, &size, &sym) >= 1) {
170  VALUE addrnum = rb_Integer(ptr);
171  if (addrnum != ptr) wrap = ptr;
172  p = NUM2PTR(addrnum);
173  }
174  if (argc >= 2) {
175  s = NUM2LONG(size);
176  }
177  if (argc >= 3) {
178  f = get_freefunc(sym, &funcwrap);
179  }
180 
181  if (p) {
182  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, data);
183  if (data->ptr && data->free) {
184  /* Free previous memory. Use of inappropriate initialize may cause SEGV. */
185  (*(data->free))(data->ptr);
186  }
187  data->wrap[0] = wrap;
188  data->wrap[1] = funcwrap;
189  data->ptr = p;
190  data->size = s;
191  data->free = f;
192  }
193 
194  return Qnil;
195 }
196 
197 /*
198  * call-seq:
199  *
200  * Fiddle::Pointer.malloc(size, freefunc = nil) => fiddle pointer instance
201  *
202  * Allocate +size+ bytes of memory and associate it with an optional
203  * +freefunc+ that will be called when the pointer is garbage collected.
204  *
205  * +freefunc+ must be an address pointing to a function or an instance of
206  * Fiddle::Function
207  */
208 static VALUE
210 {
211  VALUE size, sym, obj, wrap = 0;
212  long s;
213  freefunc_t f;
214 
215  switch (rb_scan_args(argc, argv, "11", &size, &sym)) {
216  case 1:
217  s = NUM2LONG(size);
218  f = NULL;
219  break;
220  case 2:
221  s = NUM2LONG(size);
222  f = get_freefunc(sym, &wrap);
223  break;
224  default:
225  rb_bug("rb_fiddle_ptr_s_malloc");
226  }
227 
228  obj = rb_fiddle_ptr_malloc(s,f);
229  if (wrap) RPTR_DATA(obj)->wrap[1] = wrap;
230 
231  return obj;
232 }
233 
234 /*
235  * call-seq: to_i
236  *
237  * Returns the integer memory location of this pointer.
238  */
239 static VALUE
241 {
242  struct ptr_data *data;
243 
244  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, data);
245  return PTR2NUM(data->ptr);
246 }
247 
248 /*
249  * call-seq: to_value
250  *
251  * Cast this pointer to a ruby object.
252  */
253 static VALUE
255 {
256  struct ptr_data *data;
257  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, data);
258  return (VALUE)(data->ptr);
259 }
260 
261 /*
262  * call-seq: ptr
263  *
264  * Returns a new Fiddle::Pointer instance that is a dereferenced pointer for
265  * this pointer.
266  *
267  * Analogous to the star operator in C.
268  */
269 static VALUE
271 {
272  struct ptr_data *data;
273 
274  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, data);
275  return rb_fiddle_ptr_new(*((void**)(data->ptr)),0,0);
276 }
277 
278 /*
279  * call-seq: ref
280  *
281  * Returns a new Fiddle::Pointer instance that is a reference pointer for this
282  * pointer.
283  *
284  * Analogous to the ampersand operator in C.
285  */
286 static VALUE
288 {
289  struct ptr_data *data;
290 
291  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, data);
292  return rb_fiddle_ptr_new(&(data->ptr),0,0);
293 }
294 
295 /*
296  * call-seq: null?
297  *
298  * Returns +true+ if this is a null pointer.
299  */
300 static VALUE
302 {
303  struct ptr_data *data;
304 
305  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, data);
306  return data->ptr ? Qfalse : Qtrue;
307 }
308 
309 /*
310  * call-seq: free=(function)
311  *
312  * Set the free function for this pointer to +function+ in the given
313  * Fiddle::Function.
314  */
315 static VALUE
317 {
318  struct ptr_data *data;
319 
320  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, data);
321  data->free = get_freefunc(val, &data->wrap[1]);
322 
323  return Qnil;
324 }
325 
326 /*
327  * call-seq: free => Fiddle::Function
328  *
329  * Get the free function for this pointer.
330  *
331  * Returns a new instance of Fiddle::Function.
332  *
333  * See Fiddle::Function.new
334  */
335 static VALUE
337 {
338  struct ptr_data *pdata;
339  VALUE address;
340  VALUE arg_types;
341  VALUE ret_type;
342 
343  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, pdata);
344 
345  if (!pdata->free)
346  return Qnil;
347 
348  address = PTR2NUM(pdata->free);
349  ret_type = INT2NUM(TYPE_VOID);
350  arg_types = rb_ary_new();
351  rb_ary_push(arg_types, INT2NUM(TYPE_VOIDP));
352 
353  return rb_fiddle_new_function(address, arg_types, ret_type);
354 }
355 
356 /*
357  * call-seq:
358  *
359  * ptr.to_s => string
360  * ptr.to_s(len) => string
361  *
362  * Returns the pointer contents as a string.
363  *
364  * When called with no arguments, this method will return the contents until
365  * the first NULL byte.
366  *
367  * When called with +len+, a string of +len+ bytes will be returned.
368  *
369  * See to_str
370  */
371 static VALUE
373 {
374  struct ptr_data *data;
375  VALUE arg1, val;
376  int len;
377 
378  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, data);
379  switch (rb_scan_args(argc, argv, "01", &arg1)) {
380  case 0:
381  val = rb_tainted_str_new2((char*)(data->ptr));
382  break;
383  case 1:
384  len = NUM2INT(arg1);
385  val = rb_tainted_str_new((char*)(data->ptr), len);
386  break;
387  default:
388  rb_bug("rb_fiddle_ptr_to_s");
389  }
390 
391  return val;
392 }
393 
394 /*
395  * call-seq:
396  *
397  * ptr.to_str => string
398  * ptr.to_str(len) => string
399  *
400  * Returns the pointer contents as a string.
401  *
402  * When called with no arguments, this method will return the contents with the
403  * length of this pointer's +size+.
404  *
405  * When called with +len+, a string of +len+ bytes will be returned.
406  *
407  * See to_s
408  */
409 static VALUE
411 {
412  struct ptr_data *data;
413  VALUE arg1, val;
414  int len;
415 
416  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, data);
417  switch (rb_scan_args(argc, argv, "01", &arg1)) {
418  case 0:
419  val = rb_tainted_str_new((char*)(data->ptr),data->size);
420  break;
421  case 1:
422  len = NUM2INT(arg1);
423  val = rb_tainted_str_new((char*)(data->ptr), len);
424  break;
425  default:
426  rb_bug("rb_fiddle_ptr_to_str");
427  }
428 
429  return val;
430 }
431 
432 /*
433  * call-seq: inspect
434  *
435  * Returns a string formatted with an easily readable representation of the
436  * internal state of the pointer.
437  */
438 static VALUE
440 {
441  struct ptr_data *data;
442 
443  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, data);
444  return rb_sprintf("#<%"PRIsVALUE":%p ptr=%p size=%ld free=%p>",
445  RB_OBJ_CLASSNAME(self), data, data->ptr, data->size, data->free);
446 }
447 
448 /*
449  * call-seq:
450  * ptr == other => true or false
451  * ptr.eql?(other) => true or false
452  *
453  * Returns true if +other+ wraps the same pointer, otherwise returns
454  * false.
455  */
456 static VALUE
458 {
459  void *ptr1, *ptr2;
460 
461  if(!rb_obj_is_kind_of(other, rb_cPointer)) return Qfalse;
462 
463  ptr1 = rb_fiddle_ptr2cptr(self);
464  ptr2 = rb_fiddle_ptr2cptr(other);
465 
466  return ptr1 == ptr2 ? Qtrue : Qfalse;
467 }
468 
469 /*
470  * call-seq:
471  * ptr <=> other => -1, 0, 1, or nil
472  *
473  * Returns -1 if less than, 0 if equal to, 1 if greater than +other+.
474  *
475  * Returns nil if +ptr+ cannot be compared to +other+.
476  */
477 static VALUE
479 {
480  void *ptr1, *ptr2;
482 
483  if(!rb_obj_is_kind_of(other, rb_cPointer)) return Qnil;
484 
485  ptr1 = rb_fiddle_ptr2cptr(self);
486  ptr2 = rb_fiddle_ptr2cptr(other);
487  diff = (SIGNED_VALUE)ptr1 - (SIGNED_VALUE)ptr2;
488  if (!diff) return INT2FIX(0);
489  return diff > 0 ? INT2NUM(1) : INT2NUM(-1);
490 }
491 
492 /*
493  * call-seq:
494  * ptr + n => new cptr
495  *
496  * Returns a new pointer instance that has been advanced +n+ bytes.
497  */
498 static VALUE
500 {
501  void *ptr;
502  long num, size;
503 
504  ptr = rb_fiddle_ptr2cptr(self);
505  size = RPTR_DATA(self)->size;
506  num = NUM2LONG(other);
507  return rb_fiddle_ptr_new((char *)ptr + num, size - num, 0);
508 }
509 
510 /*
511  * call-seq:
512  * ptr - n => new cptr
513  *
514  * Returns a new pointer instance that has been moved back +n+ bytes.
515  */
516 static VALUE
518 {
519  void *ptr;
520  long num, size;
521 
522  ptr = rb_fiddle_ptr2cptr(self);
523  size = RPTR_DATA(self)->size;
524  num = NUM2LONG(other);
525  return rb_fiddle_ptr_new((char *)ptr - num, size + num, 0);
526 }
527 
528 /*
529  * call-seq:
530  * ptr[index] -> an_integer
531  * ptr[start, length] -> a_string
532  *
533  * Returns integer stored at _index_.
534  *
535  * If _start_ and _length_ are given, a string containing the bytes from
536  * _start_ of _length_ will be returned.
537  */
538 static VALUE
540 {
541  VALUE arg0, arg1;
542  VALUE retval = Qnil;
543  size_t offset, len;
544  struct ptr_data *data;
545 
546  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, data);
547  if (!data->ptr) rb_raise(rb_eFiddleError, "NULL pointer dereference");
548  switch( rb_scan_args(argc, argv, "11", &arg0, &arg1) ){
549  case 1:
550  offset = NUM2ULONG(arg0);
551  retval = INT2NUM(*((char *)data->ptr + offset));
552  break;
553  case 2:
554  offset = NUM2ULONG(arg0);
555  len = NUM2ULONG(arg1);
556  retval = rb_tainted_str_new((char *)data->ptr + offset, len);
557  break;
558  default:
559  rb_bug("rb_fiddle_ptr_aref()");
560  }
561  return retval;
562 }
563 
564 /*
565  * call-seq:
566  * ptr[index] = int -> int
567  * ptr[start, length] = string or cptr or addr -> string or dl_cptr or addr
568  *
569  * Set the value at +index+ to +int+.
570  *
571  * Or, set the memory at +start+ until +length+ with the contents of +string+,
572  * the memory from +dl_cptr+, or the memory pointed at by the memory address
573  * +addr+.
574  */
575 static VALUE
577 {
578  VALUE arg0, arg1, arg2;
579  VALUE retval = Qnil;
580  size_t offset, len;
581  void *mem;
582  struct ptr_data *data;
583 
584  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, data);
585  if (!data->ptr) rb_raise(rb_eFiddleError, "NULL pointer dereference");
586  switch( rb_scan_args(argc, argv, "21", &arg0, &arg1, &arg2) ){
587  case 2:
588  offset = NUM2ULONG(arg0);
589  ((char*)data->ptr)[offset] = NUM2UINT(arg1);
590  retval = arg1;
591  break;
592  case 3:
593  offset = NUM2ULONG(arg0);
594  len = NUM2ULONG(arg1);
595  if (RB_TYPE_P(arg2, T_STRING)) {
596  mem = StringValuePtr(arg2);
597  }
598  else if( rb_obj_is_kind_of(arg2, rb_cPointer) ){
599  mem = rb_fiddle_ptr2cptr(arg2);
600  }
601  else{
602  mem = NUM2PTR(arg2);
603  }
604  memcpy((char *)data->ptr + offset, mem, len);
605  retval = arg2;
606  break;
607  default:
608  rb_bug("rb_fiddle_ptr_aset()");
609  }
610  return retval;
611 }
612 
613 /*
614  * call-seq: size=(size)
615  *
616  * Set the size of this pointer to +size+
617  */
618 static VALUE
620 {
621  RPTR_DATA(self)->size = NUM2LONG(size);
622  return size;
623 }
624 
625 /*
626  * call-seq: size
627  *
628  * Get the size of this pointer.
629  */
630 static VALUE
632 {
633  return LONG2NUM(RPTR_DATA(self)->size);
634 }
635 
636 /*
637  * call-seq:
638  * Fiddle::Pointer[val] => cptr
639  * to_ptr(val) => cptr
640  *
641  * Get the underlying pointer for ruby object +val+ and return it as a
642  * Fiddle::Pointer object.
643  */
644 static VALUE
646 {
647  VALUE ptr, wrap = val, vptr;
648 
649  if (RTEST(rb_obj_is_kind_of(val, rb_cIO))){
650  rb_io_t *fptr;
651  FILE *fp;
652  GetOpenFile(val, fptr);
653  fp = rb_io_stdio_file(fptr);
654  ptr = rb_fiddle_ptr_new(fp, 0, NULL);
655  }
656  else if (RTEST(rb_obj_is_kind_of(val, rb_cString))){
657  char *str = StringValuePtr(val);
658  ptr = rb_fiddle_ptr_new(str, RSTRING_LEN(val), NULL);
659  }
660  else if ((vptr = rb_check_funcall(val, id_to_ptr, 0, 0)) != Qundef){
661  if (rb_obj_is_kind_of(vptr, rb_cPointer)){
662  ptr = vptr;
663  wrap = 0;
664  }
665  else{
666  rb_raise(rb_eFiddleError, "to_ptr should return a Fiddle::Pointer object");
667  }
668  }
669  else{
670  VALUE num = rb_Integer(val);
671  if (num == val) wrap = 0;
672  ptr = rb_fiddle_ptr_new(NUM2PTR(num), 0, NULL);
673  }
674  OBJ_INFECT(ptr, val);
675  if (wrap) RPTR_DATA(ptr)->wrap[0] = wrap;
676  return ptr;
677 }
678 
679 void
681 {
682  id_to_ptr = rb_intern("to_ptr");
683 
684  /* Document-class: Fiddle::Pointer
685  *
686  * Fiddle::Pointer is a class to handle C pointers
687  *
688  */
717 
718  /* Document-const: NULL
719  *
720  * A NULL pointer
721  */
722  rb_define_const(mFiddle, "NULL", rb_fiddle_ptr_new(0, 0, 0));
723 }
#define RB_TYPE_P(obj, type)
static VALUE rb_fiddle_ptr_ref(VALUE self)
Definition: pointer.c:287
freefunc_t free
Definition: dl.h:203
#define TYPE_VOIDP
Definition: fiddle.h:113
void rb_bug(const char *fmt,...)
Definition: error.c:290
VALUE mFiddle
Definition: fiddle.c:3
static VALUE rb_fiddle_ptr_plus(VALUE self, VALUE other)
Definition: pointer.c:499
#define OBJ_INFECT(x, s)
unsigned long VALUE
Definition: ripper.y:104
static VALUE rb_fiddle_ptr_inspect(VALUE self)
Definition: pointer.c:439
static VALUE rb_fiddle_ptr_to_s(int argc, VALUE argv[], VALUE self)
Definition: pointer.c:372
#define rb_tainted_str_new2
static VALUE rb_fiddle_ptr_eql(VALUE self, VALUE other)
Definition: pointer.c:457
void rb_define_singleton_method(VALUE obj, const char *name, VALUE(*func)(ANYARGS), int argc)
Defines a singleton method for obj.
Definition: class.c:1497
void rb_secure(int)
Definition: safe.c:79
Definition: io.h:63
VALUE rb_eTypeError
Definition: error.c:511
static VALUE rb_fiddle_ptr_ptr(VALUE self)
Definition: pointer.c:270
void rb_define_alloc_func(VALUE, rb_alloc_func_t)
VALUE rb_ary_push(VALUE ary, VALUE item)
Definition: array.c:822
static void * rb_fiddle_ptr2cptr(VALUE val)
Definition: pointer.c:116
#define NUM2ULONG(x)
#define NUM2PTR(x)
Definition: dl.h:169
#define Qnil
VALUE rb_define_class_under(VALUE outer, const char *name, VALUE super)
Defines a class under the namespace of outer.
Definition: class.c:545
void rb_raise(VALUE exc, const char *fmt,...)
Definition: error.c:1780
static VALUE rb_fiddle_ptr_s_malloc(int argc, VALUE argv[], VALUE klass)
Definition: pointer.c:209
VALUE wrap[2]
Definition: dl.h:204
void * ptr
Definition: dl.h:201
#define GetOpenFile(obj, fp)
Definition: io.h:120
#define LONG2NUM(x)
static VALUE rb_fiddle_ptr_cmp(VALUE self, VALUE other)
Definition: pointer.c:478
#define sym(x)
Definition: date_core.c:3715
VALUE rb_eFiddleError
Definition: fiddle.c:4
Win32OLEIDispatch * p
Definition: win32ole.c:786
#define TypedData_Get_Struct(obj, type, data_type, sval)
#define StringValuePtr(v)
#define val
#define Qtrue
VALUE rb_ary_new(void)
Definition: array.c:424
unsigned long ID
Definition: ripper.y:105
void rb_gc_mark(VALUE)
Definition: gc.c:2600
void rb_define_const(VALUE, const char *, VALUE)
Definition: variable.c:2202
static VALUE rb_fiddle_ptr_aref(int argc, VALUE argv[], VALUE self)
Definition: pointer.c:539
#define RSTRING_LEN(str)
#define INT2FIX(i)
static VALUE rb_fiddle_ptr_aset(int argc, VALUE argv[], VALUE self)
Definition: pointer.c:576
#define Qfalse
#define PTR2NUM(x)
Definition: dl.h:168
static VALUE rb_fiddle_ptr_new2(VALUE klass, void *ptr, long size, freefunc_t func)
Definition: pointer.c:83
#define T_STRING
int argc
Definition: ruby.c:130
#define NIL_P(v)
static void fiddle_ptr_mark(void *ptr)
Definition: pointer.c:48
VALUE rb_check_funcall(VALUE, ID, int, VALUE *)
Definition: vm_eval.c:408
VALUE rb_tainted_str_new(const char *, long)
#define RTEST(v)
SSL_METHOD *(* func)(void)
Definition: ossl_ssl.c:108
#define RB_OBJ_CLASSNAME(obj)
Definition: pointer.c:11
VALUE rb_sprintf(const char *format,...)
Definition: sprintf.c:1270
static freefunc_t get_freefunc(VALUE func, volatile VALUE *wrap)
Definition: pointer.c:33
int rb_scan_args(int argc, const VALUE *argv, const char *fmt,...)
Definition: class.c:1570
#define NUM2UINT(x)
Definition: dl.h:200
static VALUE rb_fiddle_ptr_size_set(VALUE self, VALUE size)
Definition: pointer.c:619
RUBY_EXTERN VALUE rb_cString
Definition: ripper.y:1456
void(* freefunc_t)(void *)
Definition: pointer.c:21
RUBY_EXTERN VALUE rb_cIO
Definition: ripper.y:1442
static VALUE rb_fiddle_ptr_free_get(VALUE self)
Definition: pointer.c:336
void * ruby_xmalloc(size_t size)
Definition: gc.c:3596
VALUE rb_Integer(VALUE)
Definition: object.c:2495
int size
Definition: encoding.c:52
#define f
#define NUM2LONG(x)
static VALUE rb_fiddle_ptr_size_get(VALUE self)
Definition: pointer.c:631
VALUE rb_fiddle_new_function(VALUE address, VALUE arg_types, VALUE ret_type)
Definition: function.c:51
#define Qundef
VALUE rb_obj_is_kind_of(VALUE, VALUE)
Definition: object.c:582
static VALUE rb_fiddle_ptr_malloc(long size, freefunc_t func)
Definition: pointer.c:105
#define TYPE_VOID
Definition: fiddle.h:112
static VALUE rb_fiddle_ptr_null_p(VALUE self)
Definition: pointer.c:301
#define TypedData_Make_Struct(klass, type, data_type, sval)
RUBY_EXTERN VALUE rb_cObject
Definition: ripper.y:1426
static VALUE rb_fiddle_ptr_to_i(VALUE self)
Definition: pointer.c:240
static VALUE rb_fiddle_ptr_free_set(VALUE self, VALUE val)
Definition: pointer.c:316
#define INT2NUM(x)
static Bigint * diff(Bigint *a, Bigint *b)
Definition: util.c:1465
static ID id_to_ptr
Definition: pointer.c:45
static VALUE rb_fiddle_ptr_to_value(VALUE self)
Definition: pointer.c:254
static VALUE rb_fiddle_ptr_new(void *ptr, long size, freefunc_t func)
Definition: pointer.c:99
static VALUE rb_fiddle_ptr_s_to_ptr(VALUE self, VALUE val)
Definition: pointer.c:645
FILE * rb_io_stdio_file(rb_io_t *fptr)
Definition: io.c:7155
#define NUM2INT(x)
#define SIGNED_VALUE
static const rb_data_type_t fiddle_ptr_data_type
Definition: pointer.c:77
VALUE rb_cPointer
Definition: pointer.c:19
static VALUE rb_fiddle_ptr_initialize(int argc, VALUE argv[], VALUE self)
Definition: pointer.c:161
#define PRIsVALUE
#define RPTR_DATA(obj)
Definition: pointer.c:30
static VALUE rb_fiddle_ptr_s_allocate(VALUE klass)
Definition: pointer.c:136
void Init_fiddle_pointer(void)
Definition: pointer.c:680
static VALUE rb_fiddle_ptr_to_str(int argc, VALUE argv[], VALUE self)
Definition: pointer.c:410
#define OBJ_TAINT(x)
#define rb_intern(str)
#define NULL
Definition: _sdbm.c:103
void rb_define_method(VALUE klass, const char *name, VALUE(*func)(ANYARGS), int argc)
Definition: class.c:1344
static size_t fiddle_ptr_memsize(const void *ptr)
Definition: pointer.c:71
long size
Definition: dl.h:202
char ** argv
Definition: ruby.c:131
static void fiddle_ptr_free(void *ptr)
Definition: pointer.c:60
static VALUE rb_fiddle_ptr_minus(VALUE self, VALUE other)
Definition: pointer.c:517