Ruby  2.0.0p648(2015-12-16revision53162)
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  xfree(ptr);
69 }
70 
71 static size_t
72 fiddle_ptr_memsize(const void *ptr)
73 {
74  const struct ptr_data *data = ptr;
75  return data ? sizeof(*data) + data->size : 0;
76 }
77 
79  "fiddle/pointer",
81 };
82 
83 static VALUE
85 {
86  struct ptr_data *data;
87  VALUE val;
88 
89  rb_secure(4);
90  val = TypedData_Make_Struct(klass, struct ptr_data, &fiddle_ptr_data_type, data);
91  data->ptr = ptr;
92  data->free = func;
93  data->size = size;
94  OBJ_TAINT(val);
95 
96  return val;
97 }
98 
99 static VALUE
101 {
102  return rb_fiddle_ptr_new2(rb_cPointer, ptr, size, func);
103 }
104 
105 static VALUE
107 {
108  void *ptr;
109 
110  rb_secure(4);
111  ptr = ruby_xmalloc((size_t)size);
112  memset(ptr,0,(size_t)size);
113  return rb_fiddle_ptr_new(ptr, size, func);
114 }
115 
116 static void *
118 {
119  struct ptr_data *data;
120  void *ptr;
121 
122  if (rb_obj_is_kind_of(val, rb_cPointer)) {
123  TypedData_Get_Struct(val, struct ptr_data, &fiddle_ptr_data_type, data);
124  ptr = data->ptr;
125  }
126  else if (val == Qnil) {
127  ptr = NULL;
128  }
129  else{
130  rb_raise(rb_eTypeError, "Fiddle::Pointer was expected");
131  }
132 
133  return ptr;
134 }
135 
136 static VALUE
138 {
139  VALUE obj;
140  struct ptr_data *data;
141 
142  rb_secure(4);
143  obj = TypedData_Make_Struct(klass, struct ptr_data, &fiddle_ptr_data_type, data);
144  data->ptr = 0;
145  data->size = 0;
146  data->free = 0;
147 
148  return obj;
149 }
150 
151 /*
152  * call-seq:
153  * Fiddle::Pointer.new(address) => fiddle_cptr
154  * new(address, size) => fiddle_cptr
155  * new(address, size, freefunc) => fiddle_cptr
156  *
157  * Create a new pointer to +address+ with an optional +size+ and +freefunc+.
158  *
159  * +freefunc+ will be called when the instance is garbage collected.
160  */
161 static VALUE
163 {
164  VALUE ptr, sym, size, wrap = 0, funcwrap = 0;
165  struct ptr_data *data;
166  void *p = NULL;
167  freefunc_t f = NULL;
168  long s = 0;
169 
170  if (rb_scan_args(argc, argv, "12", &ptr, &size, &sym) >= 1) {
171  VALUE addrnum = rb_Integer(ptr);
172  if (addrnum != ptr) wrap = ptr;
173  p = NUM2PTR(addrnum);
174  }
175  if (argc >= 2) {
176  s = NUM2LONG(size);
177  }
178  if (argc >= 3) {
179  f = get_freefunc(sym, &funcwrap);
180  }
181 
182  if (p) {
183  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, data);
184  if (data->ptr && data->free) {
185  /* Free previous memory. Use of inappropriate initialize may cause SEGV. */
186  (*(data->free))(data->ptr);
187  }
188  data->wrap[0] = wrap;
189  data->wrap[1] = funcwrap;
190  data->ptr = p;
191  data->size = s;
192  data->free = f;
193  }
194 
195  return Qnil;
196 }
197 
198 /*
199  * call-seq:
200  *
201  * Fiddle::Pointer.malloc(size, freefunc = nil) => fiddle pointer instance
202  *
203  * Allocate +size+ bytes of memory and associate it with an optional
204  * +freefunc+ that will be called when the pointer is garbage collected.
205  *
206  * +freefunc+ must be an address pointing to a function or an instance of
207  * Fiddle::Function
208  */
209 static VALUE
211 {
212  VALUE size, sym, obj, wrap = 0;
213  long s;
214  freefunc_t f;
215 
216  switch (rb_scan_args(argc, argv, "11", &size, &sym)) {
217  case 1:
218  s = NUM2LONG(size);
219  f = NULL;
220  break;
221  case 2:
222  s = NUM2LONG(size);
223  f = get_freefunc(sym, &wrap);
224  break;
225  default:
226  rb_bug("rb_fiddle_ptr_s_malloc");
227  }
228 
229  obj = rb_fiddle_ptr_malloc(s,f);
230  if (wrap) RPTR_DATA(obj)->wrap[1] = wrap;
231 
232  return obj;
233 }
234 
235 /*
236  * call-seq: to_i
237  *
238  * Returns the integer memory location of this pointer.
239  */
240 static VALUE
242 {
243  struct ptr_data *data;
244 
245  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, data);
246  return PTR2NUM(data->ptr);
247 }
248 
249 /*
250  * call-seq: to_value
251  *
252  * Cast this pointer to a ruby object.
253  */
254 static VALUE
256 {
257  struct ptr_data *data;
258  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, data);
259  return (VALUE)(data->ptr);
260 }
261 
262 /*
263  * call-seq: ptr
264  *
265  * Returns a new Fiddle::Pointer instance that is a dereferenced pointer for
266  * this pointer.
267  *
268  * Analogous to the star operator in C.
269  */
270 static VALUE
272 {
273  struct ptr_data *data;
274 
275  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, data);
276  return rb_fiddle_ptr_new(*((void**)(data->ptr)),0,0);
277 }
278 
279 /*
280  * call-seq: ref
281  *
282  * Returns a new Fiddle::Pointer instance that is a reference pointer for this
283  * pointer.
284  *
285  * Analogous to the ampersand operator in C.
286  */
287 static VALUE
289 {
290  struct ptr_data *data;
291 
292  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, data);
293  return rb_fiddle_ptr_new(&(data->ptr),0,0);
294 }
295 
296 /*
297  * call-seq: null?
298  *
299  * Returns +true+ if this is a null pointer.
300  */
301 static VALUE
303 {
304  struct ptr_data *data;
305 
306  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, data);
307  return data->ptr ? Qfalse : Qtrue;
308 }
309 
310 /*
311  * call-seq: free=(function)
312  *
313  * Set the free function for this pointer to +function+ in the given
314  * Fiddle::Function.
315  */
316 static VALUE
318 {
319  struct ptr_data *data;
320 
321  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, data);
322  data->free = get_freefunc(val, &data->wrap[1]);
323 
324  return Qnil;
325 }
326 
327 /*
328  * call-seq: free => Fiddle::Function
329  *
330  * Get the free function for this pointer.
331  *
332  * Returns a new instance of Fiddle::Function.
333  *
334  * See Fiddle::Function.new
335  */
336 static VALUE
338 {
339  struct ptr_data *pdata;
340  VALUE address;
341  VALUE arg_types;
342  VALUE ret_type;
343 
344  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, pdata);
345 
346  if (!pdata->free)
347  return Qnil;
348 
349  address = PTR2NUM(pdata->free);
350  ret_type = INT2NUM(TYPE_VOID);
351  arg_types = rb_ary_new();
352  rb_ary_push(arg_types, INT2NUM(TYPE_VOIDP));
353 
354  return rb_fiddle_new_function(address, arg_types, ret_type);
355 }
356 
357 /*
358  * call-seq:
359  *
360  * ptr.to_s => string
361  * ptr.to_s(len) => string
362  *
363  * Returns the pointer contents as a string.
364  *
365  * When called with no arguments, this method will return the contents until
366  * the first NULL byte.
367  *
368  * When called with +len+, a string of +len+ bytes will be returned.
369  *
370  * See to_str
371  */
372 static VALUE
374 {
375  struct ptr_data *data;
376  VALUE arg1, val;
377  int len;
378 
379  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, data);
380  switch (rb_scan_args(argc, argv, "01", &arg1)) {
381  case 0:
382  val = rb_tainted_str_new2((char*)(data->ptr));
383  break;
384  case 1:
385  len = NUM2INT(arg1);
386  val = rb_tainted_str_new((char*)(data->ptr), len);
387  break;
388  default:
389  rb_bug("rb_fiddle_ptr_to_s");
390  }
391 
392  return val;
393 }
394 
395 /*
396  * call-seq:
397  *
398  * ptr.to_str => string
399  * ptr.to_str(len) => string
400  *
401  * Returns the pointer contents as a string.
402  *
403  * When called with no arguments, this method will return the contents with the
404  * length of this pointer's +size+.
405  *
406  * When called with +len+, a string of +len+ bytes will be returned.
407  *
408  * See to_s
409  */
410 static VALUE
412 {
413  struct ptr_data *data;
414  VALUE arg1, val;
415  int len;
416 
417  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, data);
418  switch (rb_scan_args(argc, argv, "01", &arg1)) {
419  case 0:
420  val = rb_tainted_str_new((char*)(data->ptr),data->size);
421  break;
422  case 1:
423  len = NUM2INT(arg1);
424  val = rb_tainted_str_new((char*)(data->ptr), len);
425  break;
426  default:
427  rb_bug("rb_fiddle_ptr_to_str");
428  }
429 
430  return val;
431 }
432 
433 /*
434  * call-seq: inspect
435  *
436  * Returns a string formatted with an easily readable representation of the
437  * internal state of the pointer.
438  */
439 static VALUE
441 {
442  struct ptr_data *data;
443 
444  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, data);
445  return rb_sprintf("#<%"PRIsVALUE":%p ptr=%p size=%ld free=%p>",
446  RB_OBJ_CLASSNAME(self), data, data->ptr, data->size, data->free);
447 }
448 
449 /*
450  * call-seq:
451  * ptr == other => true or false
452  * ptr.eql?(other) => true or false
453  *
454  * Returns true if +other+ wraps the same pointer, otherwise returns
455  * false.
456  */
457 static VALUE
459 {
460  void *ptr1, *ptr2;
461 
462  if(!rb_obj_is_kind_of(other, rb_cPointer)) return Qfalse;
463 
464  ptr1 = rb_fiddle_ptr2cptr(self);
465  ptr2 = rb_fiddle_ptr2cptr(other);
466 
467  return ptr1 == ptr2 ? Qtrue : Qfalse;
468 }
469 
470 /*
471  * call-seq:
472  * ptr <=> other => -1, 0, 1, or nil
473  *
474  * Returns -1 if less than, 0 if equal to, 1 if greater than +other+.
475  *
476  * Returns nil if +ptr+ cannot be compared to +other+.
477  */
478 static VALUE
480 {
481  void *ptr1, *ptr2;
483 
484  if(!rb_obj_is_kind_of(other, rb_cPointer)) return Qnil;
485 
486  ptr1 = rb_fiddle_ptr2cptr(self);
487  ptr2 = rb_fiddle_ptr2cptr(other);
488  diff = (SIGNED_VALUE)ptr1 - (SIGNED_VALUE)ptr2;
489  if (!diff) return INT2FIX(0);
490  return diff > 0 ? INT2NUM(1) : INT2NUM(-1);
491 }
492 
493 /*
494  * call-seq:
495  * ptr + n => new cptr
496  *
497  * Returns a new pointer instance that has been advanced +n+ bytes.
498  */
499 static VALUE
501 {
502  void *ptr;
503  long num, size;
504 
505  ptr = rb_fiddle_ptr2cptr(self);
506  size = RPTR_DATA(self)->size;
507  num = NUM2LONG(other);
508  return rb_fiddle_ptr_new((char *)ptr + num, size - num, 0);
509 }
510 
511 /*
512  * call-seq:
513  * ptr - n => new cptr
514  *
515  * Returns a new pointer instance that has been moved back +n+ bytes.
516  */
517 static VALUE
519 {
520  void *ptr;
521  long num, size;
522 
523  ptr = rb_fiddle_ptr2cptr(self);
524  size = RPTR_DATA(self)->size;
525  num = NUM2LONG(other);
526  return rb_fiddle_ptr_new((char *)ptr - num, size + num, 0);
527 }
528 
529 /*
530  * call-seq:
531  * ptr[index] -> an_integer
532  * ptr[start, length] -> a_string
533  *
534  * Returns integer stored at _index_.
535  *
536  * If _start_ and _length_ are given, a string containing the bytes from
537  * _start_ of _length_ will be returned.
538  */
539 static VALUE
541 {
542  VALUE arg0, arg1;
543  VALUE retval = Qnil;
544  size_t offset, len;
545  struct ptr_data *data;
546 
547  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, data);
548  if (!data->ptr) rb_raise(rb_eFiddleError, "NULL pointer dereference");
549  switch( rb_scan_args(argc, argv, "11", &arg0, &arg1) ){
550  case 1:
551  offset = NUM2ULONG(arg0);
552  retval = INT2NUM(*((char *)data->ptr + offset));
553  break;
554  case 2:
555  offset = NUM2ULONG(arg0);
556  len = NUM2ULONG(arg1);
557  retval = rb_tainted_str_new((char *)data->ptr + offset, len);
558  break;
559  default:
560  rb_bug("rb_fiddle_ptr_aref()");
561  }
562  return retval;
563 }
564 
565 /*
566  * call-seq:
567  * ptr[index] = int -> int
568  * ptr[start, length] = string or cptr or addr -> string or dl_cptr or addr
569  *
570  * Set the value at +index+ to +int+.
571  *
572  * Or, set the memory at +start+ until +length+ with the contents of +string+,
573  * the memory from +dl_cptr+, or the memory pointed at by the memory address
574  * +addr+.
575  */
576 static VALUE
578 {
579  VALUE arg0, arg1, arg2;
580  VALUE retval = Qnil;
581  size_t offset, len;
582  void *mem;
583  struct ptr_data *data;
584 
585  TypedData_Get_Struct(self, struct ptr_data, &fiddle_ptr_data_type, data);
586  if (!data->ptr) rb_raise(rb_eFiddleError, "NULL pointer dereference");
587  switch( rb_scan_args(argc, argv, "21", &arg0, &arg1, &arg2) ){
588  case 2:
589  offset = NUM2ULONG(arg0);
590  ((char*)data->ptr)[offset] = NUM2UINT(arg1);
591  retval = arg1;
592  break;
593  case 3:
594  offset = NUM2ULONG(arg0);
595  len = NUM2ULONG(arg1);
596  if (RB_TYPE_P(arg2, T_STRING)) {
597  mem = StringValuePtr(arg2);
598  }
599  else if( rb_obj_is_kind_of(arg2, rb_cPointer) ){
600  mem = rb_fiddle_ptr2cptr(arg2);
601  }
602  else{
603  mem = NUM2PTR(arg2);
604  }
605  memcpy((char *)data->ptr + offset, mem, len);
606  retval = arg2;
607  break;
608  default:
609  rb_bug("rb_fiddle_ptr_aset()");
610  }
611  return retval;
612 }
613 
614 /*
615  * call-seq: size=(size)
616  *
617  * Set the size of this pointer to +size+
618  */
619 static VALUE
621 {
622  RPTR_DATA(self)->size = NUM2LONG(size);
623  return size;
624 }
625 
626 /*
627  * call-seq: size
628  *
629  * Get the size of this pointer.
630  */
631 static VALUE
633 {
634  return LONG2NUM(RPTR_DATA(self)->size);
635 }
636 
637 /*
638  * call-seq:
639  * Fiddle::Pointer[val] => cptr
640  * to_ptr(val) => cptr
641  *
642  * Get the underlying pointer for ruby object +val+ and return it as a
643  * Fiddle::Pointer object.
644  */
645 static VALUE
647 {
648  VALUE ptr, wrap = val, vptr;
649 
650  if (RTEST(rb_obj_is_kind_of(val, rb_cIO))){
651  rb_io_t *fptr;
652  FILE *fp;
653  GetOpenFile(val, fptr);
654  fp = rb_io_stdio_file(fptr);
655  ptr = rb_fiddle_ptr_new(fp, 0, NULL);
656  }
657  else if (RTEST(rb_obj_is_kind_of(val, rb_cString))){
658  char *str = StringValuePtr(val);
659  ptr = rb_fiddle_ptr_new(str, RSTRING_LEN(val), NULL);
660  }
661  else if ((vptr = rb_check_funcall(val, id_to_ptr, 0, 0)) != Qundef){
662  if (rb_obj_is_kind_of(vptr, rb_cPointer)){
663  ptr = vptr;
664  wrap = 0;
665  }
666  else{
667  rb_raise(rb_eFiddleError, "to_ptr should return a Fiddle::Pointer object");
668  }
669  }
670  else{
671  VALUE num = rb_Integer(val);
672  if (num == val) wrap = 0;
673  ptr = rb_fiddle_ptr_new(NUM2PTR(num), 0, NULL);
674  }
675  OBJ_INFECT(ptr, val);
676  if (wrap) RPTR_DATA(ptr)->wrap[0] = wrap;
677  return ptr;
678 }
679 
680 void
682 {
683  id_to_ptr = rb_intern("to_ptr");
684 
685  /* Document-class: Fiddle::Pointer
686  *
687  * Fiddle::Pointer is a class to handle C pointers
688  *
689  */
718 
719  /* Document-const: NULL
720  *
721  * A NULL pointer
722  */
723  rb_define_const(mFiddle, "NULL", rb_fiddle_ptr_new(0, 0, 0));
724 }
RUBY_EXTERN VALUE rb_cString
Definition: ruby.h:1456
static VALUE rb_fiddle_ptr_ref(VALUE self)
Definition: pointer.c:288
freefunc_t free
Definition: dl.h:203
#define TYPE_VOIDP
Definition: fiddle.h:113
void rb_bug(const char *fmt,...)
Definition: error.c:295
VALUE mFiddle
Definition: fiddle.c:3
static VALUE rb_fiddle_ptr_plus(VALUE self, VALUE other)
Definition: pointer.c:500
#define INT2NUM(x)
Definition: ruby.h:1178
static VALUE rb_fiddle_ptr_inspect(VALUE self)
Definition: pointer.c:440
static VALUE rb_fiddle_ptr_to_s(int argc, VALUE argv[], VALUE self)
Definition: pointer.c:373
static VALUE rb_fiddle_ptr_eql(VALUE self, VALUE other)
Definition: pointer.c:458
#define NUM2INT(x)
Definition: ruby.h:622
#define NUM2UINT(x)
Definition: ruby.h:623
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
#define Qtrue
Definition: ruby.h:434
Definition: io.h:63
#define TypedData_Get_Struct(obj, type, data_type, sval)
Definition: ruby.h:1030
VALUE rb_eTypeError
Definition: error.c:516
static VALUE rb_fiddle_ptr_ptr(VALUE self)
Definition: pointer.c:271
VALUE rb_ary_push(VALUE ary, VALUE item)
Definition: array.c:822
static void * rb_fiddle_ptr2cptr(VALUE val)
Definition: pointer.c:117
#define NUM2PTR(x)
Definition: dl.h:169
VALUE rb_define_class_under(VALUE outer, const char *name, VALUE super)
Defines a class under the namespace of outer.
Definition: class.c:534
void rb_raise(VALUE exc, const char *fmt,...)
Definition: error.c:1788
void rb_define_alloc_func(VALUE, rb_alloc_func_t)
VALUE rb_obj_is_kind_of(VALUE, VALUE)
Definition: object.c:593
static VALUE rb_fiddle_ptr_s_malloc(int argc, VALUE argv[], VALUE klass)
Definition: pointer.c:210
VALUE rb_tainted_str_new2(const char *)
VALUE wrap[2]
Definition: dl.h:204
void * ptr
Definition: dl.h:201
void rb_gc_mark(VALUE ptr)
Definition: gc.c:2600
#define GetOpenFile(obj, fp)
Definition: io.h:120
static VALUE rb_fiddle_ptr_cmp(VALUE self, VALUE other)
Definition: pointer.c:479
#define sym(x)
Definition: date_core.c:3715
VALUE rb_eFiddleError
Definition: fiddle.c:4
Win32OLEIDispatch * p
Definition: win32ole.c:786
#define RB_TYPE_P(obj, type)
Definition: ruby.h:1537
#define val
RUBY_EXTERN VALUE rb_cObject
Definition: ruby.h:1426
VALUE rb_ary_new(void)
Definition: array.c:424
#define NIL_P(v)
Definition: ruby.h:446
static VALUE rb_fiddle_ptr_aref(int argc, VALUE argv[], VALUE self)
Definition: pointer.c:540
static VALUE rb_fiddle_ptr_aset(int argc, VALUE argv[], VALUE self)
Definition: pointer.c:577
#define PTR2NUM(x)
Definition: dl.h:168
void rb_define_const(VALUE, const char *, VALUE)
Definition: variable.c:2204
static VALUE rb_fiddle_ptr_new2(VALUE klass, void *ptr, long size, freefunc_t func)
Definition: pointer.c:84
int argc
Definition: ruby.c:130
#define Qfalse
Definition: ruby.h:433
VALUE rb_Integer(VALUE)
Definition: object.c:2539
static void fiddle_ptr_mark(void *ptr)
Definition: pointer.c:48
RUBY_EXTERN VALUE rb_cIO
Definition: ruby.h:1442
#define RSTRING_LEN(str)
Definition: ruby.h:862
SSL_METHOD *(* func)(void)
Definition: ossl_ssl.c:108
#define RB_OBJ_CLASSNAME(obj)
Definition: pointer.c:11
VALUE rb_check_funcall(VALUE, ID, int, VALUE *)
Definition: vm_eval.c:408
VALUE rb_sprintf(const char *format,...)
Definition: sprintf.c:1275
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 PRIsVALUE
Definition: ruby.h:147
Definition: dl.h:200
unsigned long ID
Definition: ruby.h:105
#define Qnil
Definition: ruby.h:435
#define OBJ_TAINT(x)
Definition: ruby.h:1154
unsigned long VALUE
Definition: ruby.h:104
static VALUE rb_fiddle_ptr_size_set(VALUE self, VALUE size)
Definition: pointer.c:620
void(* freefunc_t)(void *)
Definition: pointer.c:21
void xfree(void *)
static VALUE rb_fiddle_ptr_free_get(VALUE self)
Definition: pointer.c:337
#define LONG2NUM(x)
Definition: ruby.h:1199
void * ruby_xmalloc(size_t size)
Definition: gc.c:3596
int size
Definition: encoding.c:52
#define f
#define INT2FIX(i)
Definition: ruby.h:241
static VALUE rb_fiddle_ptr_size_get(VALUE self)
Definition: pointer.c:632
VALUE rb_fiddle_new_function(VALUE address, VALUE arg_types, VALUE ret_type)
Definition: function.c:51
static VALUE rb_fiddle_ptr_malloc(long size, freefunc_t func)
Definition: pointer.c:106
#define TYPE_VOID
Definition: fiddle.h:112
#define NUM2ULONG(x)
Definition: ruby.h:601
static VALUE rb_fiddle_ptr_null_p(VALUE self)
Definition: pointer.c:302
static VALUE rb_fiddle_ptr_to_i(VALUE self)
Definition: pointer.c:241
#define RTEST(v)
Definition: ruby.h:445
#define T_STRING
Definition: ruby.h:490
static VALUE rb_fiddle_ptr_free_set(VALUE self, VALUE val)
Definition: pointer.c:317
#define OBJ_INFECT(x, s)
Definition: ruby.h:1157
static Bigint * diff(Bigint *a, Bigint *b)
Definition: util.c:1465
static ID id_to_ptr
Definition: pointer.c:45
#define TypedData_Make_Struct(klass, type, data_type, sval)
Definition: ruby.h:1019
static VALUE rb_fiddle_ptr_to_value(VALUE self)
Definition: pointer.c:255
static VALUE rb_fiddle_ptr_new(void *ptr, long size, freefunc_t func)
Definition: pointer.c:100
static VALUE rb_fiddle_ptr_s_to_ptr(VALUE self, VALUE val)
Definition: pointer.c:646
FILE * rb_io_stdio_file(rb_io_t *fptr)
Definition: io.c:7189
static const rb_data_type_t fiddle_ptr_data_type
Definition: pointer.c:78
VALUE rb_cPointer
Definition: pointer.c:19
#define StringValuePtr(v)
Definition: ruby.h:547
static VALUE rb_fiddle_ptr_initialize(int argc, VALUE argv[], VALUE self)
Definition: pointer.c:162
#define RPTR_DATA(obj)
Definition: pointer.c:30
static VALUE rb_fiddle_ptr_s_allocate(VALUE klass)
Definition: pointer.c:137
void rb_secure(int)
Definition: safe.c:79
void Init_fiddle_pointer(void)
Definition: pointer.c:681
static VALUE rb_fiddle_ptr_to_str(int argc, VALUE argv[], VALUE self)
Definition: pointer.c:411
VALUE rb_tainted_str_new(const char *, long)
#define rb_intern(str)
#define NULL
Definition: _sdbm.c:102
#define Qundef
Definition: ruby.h:436
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:72
long size
Definition: dl.h:202
#define NUM2LONG(x)
Definition: ruby.h:592
char ** argv
Definition: ruby.c:131
static void fiddle_ptr_free(void *ptr)
Definition: pointer.c:60
#define SIGNED_VALUE
Definition: ruby.h:106
static VALUE rb_fiddle_ptr_minus(VALUE self, VALUE other)
Definition: pointer.c:518