зеркало из https://github.com/github/ruby.git
479 строки
10 KiB
C
479 строки
10 KiB
C
/* -*- C -*-
|
|
* $Id$
|
|
*/
|
|
|
|
#include <ruby/ruby.h>
|
|
#include <ruby/io.h>
|
|
#include <ctype.h>
|
|
#include "dl.h"
|
|
|
|
VALUE rb_cDLCPtr;
|
|
|
|
static ID id_to_ptr;
|
|
|
|
static void
|
|
dlptr_free(struct ptr_data *data)
|
|
{
|
|
if (data->ptr) {
|
|
if (data->free) {
|
|
(*(data->free))(data->ptr);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
dlptr_mark(struct ptr_data *data)
|
|
{
|
|
}
|
|
|
|
void
|
|
dlptr_init(VALUE val)
|
|
{
|
|
struct ptr_data *data;
|
|
|
|
Data_Get_Struct(val, struct ptr_data, data);
|
|
OBJ_TAINT(val);
|
|
}
|
|
|
|
VALUE
|
|
rb_dlptr_new2(VALUE klass, void *ptr, long size, freefunc_t func)
|
|
{
|
|
struct ptr_data *data;
|
|
VALUE val;
|
|
|
|
rb_secure(4);
|
|
val = Data_Make_Struct(klass, struct ptr_data,
|
|
0, dlptr_free, data);
|
|
data->ptr = ptr;
|
|
data->free = func;
|
|
data->size = size;
|
|
dlptr_init(val);
|
|
|
|
return val;
|
|
}
|
|
|
|
VALUE
|
|
rb_dlptr_new(void *ptr, long size, freefunc_t func)
|
|
{
|
|
return rb_dlptr_new2(rb_cDLCPtr, ptr, size, func);
|
|
}
|
|
|
|
VALUE
|
|
rb_dlptr_malloc(long size, freefunc_t func)
|
|
{
|
|
void *ptr;
|
|
|
|
rb_secure(4);
|
|
ptr = ruby_xmalloc((size_t)size);
|
|
memset(ptr,0,(size_t)size);
|
|
return rb_dlptr_new(ptr, size, func);
|
|
}
|
|
|
|
void *
|
|
rb_dlptr2cptr(VALUE val)
|
|
{
|
|
struct ptr_data *data;
|
|
void *ptr;
|
|
|
|
if (rb_obj_is_kind_of(val, rb_cDLCPtr)) {
|
|
Data_Get_Struct(val, struct ptr_data, data);
|
|
ptr = data->ptr;
|
|
}
|
|
else if (val == Qnil) {
|
|
ptr = NULL;
|
|
}
|
|
else{
|
|
rb_raise(rb_eTypeError, "DL::PtrData was expected");
|
|
}
|
|
|
|
return ptr;
|
|
}
|
|
|
|
static VALUE
|
|
rb_dlptr_s_allocate(VALUE klass)
|
|
{
|
|
VALUE obj;
|
|
struct ptr_data *data;
|
|
|
|
rb_secure(4);
|
|
obj = Data_Make_Struct(klass, struct ptr_data, dlptr_mark, dlptr_free, data);
|
|
data->ptr = 0;
|
|
data->size = 0;
|
|
data->free = 0;
|
|
|
|
return obj;
|
|
}
|
|
|
|
static VALUE
|
|
rb_dlptr_initialize(int argc, VALUE argv[], VALUE self)
|
|
{
|
|
VALUE ptr, sym, size;
|
|
struct ptr_data *data;
|
|
void *p = NULL;
|
|
freefunc_t f = NULL;
|
|
long s = 0;
|
|
|
|
switch (rb_scan_args(argc, argv, "12", &ptr, &size, &sym)) {
|
|
case 1:
|
|
p = (void*)(NUM2PTR(rb_Integer(ptr)));
|
|
break;
|
|
case 2:
|
|
p = (void*)(NUM2PTR(rb_Integer(ptr)));
|
|
s = NUM2LONG(size);
|
|
break;
|
|
case 3:
|
|
p = (void*)(NUM2PTR(rb_Integer(ptr)));
|
|
s = NUM2LONG(size);
|
|
f = NIL_P(sym) ? NULL : RCFUNC_DATA(sym)->ptr;
|
|
break;
|
|
default:
|
|
rb_bug("rb_dlptr_initialize");
|
|
}
|
|
|
|
if (p) {
|
|
Data_Get_Struct(self, struct ptr_data, data);
|
|
if (data->ptr && data->free) {
|
|
/* Free previous memory. Use of inappropriate initialize may cause SEGV. */
|
|
(*(data->free))(data->ptr);
|
|
}
|
|
data->ptr = p;
|
|
data->size = s;
|
|
data->free = f;
|
|
}
|
|
|
|
return Qnil;
|
|
}
|
|
|
|
static VALUE
|
|
rb_dlptr_s_malloc(int argc, VALUE argv[], VALUE klass)
|
|
{
|
|
VALUE size, sym, obj;
|
|
int s;
|
|
freefunc_t f;
|
|
|
|
switch (rb_scan_args(argc, argv, "11", &size, &sym)) {
|
|
case 1:
|
|
s = NUM2LONG(size);
|
|
f = NULL;
|
|
break;
|
|
case 2:
|
|
s = NUM2LONG(size);
|
|
f = RCFUNC_DATA(sym)->ptr;
|
|
break;
|
|
default:
|
|
rb_bug("rb_dlptr_s_malloc");
|
|
}
|
|
|
|
obj = rb_dlptr_malloc(s,f);
|
|
|
|
return obj;
|
|
}
|
|
|
|
VALUE
|
|
rb_dlptr_to_i(VALUE self)
|
|
{
|
|
struct ptr_data *data;
|
|
|
|
Data_Get_Struct(self, struct ptr_data, data);
|
|
return PTR2NUM(data->ptr);
|
|
}
|
|
|
|
VALUE
|
|
rb_dlptr_to_value(VALUE self)
|
|
{
|
|
struct ptr_data *data;
|
|
Data_Get_Struct(self, struct ptr_data, data);
|
|
return (VALUE)(data->ptr);
|
|
}
|
|
|
|
VALUE
|
|
rb_dlptr_ptr(VALUE self)
|
|
{
|
|
struct ptr_data *data;
|
|
|
|
Data_Get_Struct(self, struct ptr_data, data);
|
|
return rb_dlptr_new(*((void**)(data->ptr)),0,0);
|
|
}
|
|
|
|
VALUE
|
|
rb_dlptr_ref(VALUE self)
|
|
{
|
|
struct ptr_data *data;
|
|
|
|
Data_Get_Struct(self, struct ptr_data, data);
|
|
return rb_dlptr_new(&(data->ptr),0,0);
|
|
}
|
|
|
|
VALUE
|
|
rb_dlptr_null_p(VALUE self)
|
|
{
|
|
struct ptr_data *data;
|
|
|
|
Data_Get_Struct(self, struct ptr_data, data);
|
|
return data->ptr ? Qfalse : Qtrue;
|
|
}
|
|
|
|
VALUE
|
|
rb_dlptr_free_set(VALUE self, VALUE val)
|
|
{
|
|
struct ptr_data *data;
|
|
extern VALUE rb_cDLCFunc;
|
|
|
|
Data_Get_Struct(self, struct ptr_data, data);
|
|
if( rb_obj_is_kind_of(val, rb_cDLCFunc) == Qtrue ){
|
|
data->free = RCFUNC_DATA(val)->ptr;
|
|
}
|
|
else{
|
|
data->free = NUM2PTR(rb_Integer(val));
|
|
}
|
|
|
|
return Qnil;
|
|
}
|
|
|
|
VALUE
|
|
rb_dlptr_free_get(VALUE self)
|
|
{
|
|
struct ptr_data *pdata;
|
|
|
|
Data_Get_Struct(self, struct ptr_data, pdata);
|
|
|
|
return rb_dlcfunc_new(pdata->free, DLTYPE_VOID, "free<anonymous>", CFUNC_CDECL);
|
|
}
|
|
|
|
VALUE
|
|
rb_dlptr_to_s(int argc, VALUE argv[], VALUE self)
|
|
{
|
|
struct ptr_data *data;
|
|
VALUE arg1, val;
|
|
int len;
|
|
|
|
Data_Get_Struct(self, struct ptr_data, data);
|
|
switch (rb_scan_args(argc, argv, "01", &arg1)) {
|
|
case 0:
|
|
val = rb_tainted_str_new2((char*)(data->ptr));
|
|
break;
|
|
case 1:
|
|
len = NUM2INT(arg1);
|
|
val = rb_tainted_str_new((char*)(data->ptr), len);
|
|
break;
|
|
default:
|
|
rb_bug("rb_dlptr_to_s");
|
|
}
|
|
|
|
return val;
|
|
}
|
|
|
|
VALUE
|
|
rb_dlptr_to_str(int argc, VALUE argv[], VALUE self)
|
|
{
|
|
struct ptr_data *data;
|
|
VALUE arg1, val;
|
|
int len;
|
|
|
|
Data_Get_Struct(self, struct ptr_data, data);
|
|
switch (rb_scan_args(argc, argv, "01", &arg1)) {
|
|
case 0:
|
|
val = rb_tainted_str_new((char*)(data->ptr),data->size);
|
|
break;
|
|
case 1:
|
|
len = NUM2INT(arg1);
|
|
val = rb_tainted_str_new((char*)(data->ptr), len);
|
|
break;
|
|
default:
|
|
rb_bug("rb_dlptr_to_str");
|
|
}
|
|
|
|
return val;
|
|
}
|
|
|
|
VALUE
|
|
rb_dlptr_inspect(VALUE self)
|
|
{
|
|
struct ptr_data *data;
|
|
char str[1024];
|
|
|
|
Data_Get_Struct(self, struct ptr_data, data);
|
|
snprintf(str, 1023, "#<%s:%p ptr=%p size=%ld free=%p>",
|
|
rb_class2name(CLASS_OF(self)), data, data->ptr, data->size, data->free);
|
|
return rb_str_new2(str);
|
|
}
|
|
|
|
VALUE
|
|
rb_dlptr_eql(VALUE self, VALUE other)
|
|
{
|
|
void *ptr1, *ptr2;
|
|
ptr1 = rb_dlptr2cptr(self);
|
|
ptr2 = rb_dlptr2cptr(other);
|
|
|
|
return ptr1 == ptr2 ? Qtrue : Qfalse;
|
|
}
|
|
|
|
VALUE
|
|
rb_dlptr_cmp(VALUE self, VALUE other)
|
|
{
|
|
void *ptr1, *ptr2;
|
|
ptr1 = rb_dlptr2cptr(self);
|
|
ptr2 = rb_dlptr2cptr(other);
|
|
return PTR2NUM((long)ptr1 - (long)ptr2);
|
|
}
|
|
|
|
VALUE
|
|
rb_dlptr_plus(VALUE self, VALUE other)
|
|
{
|
|
void *ptr;
|
|
long num, size;
|
|
|
|
ptr = rb_dlptr2cptr(self);
|
|
size = RPTR_DATA(self)->size;
|
|
num = NUM2LONG(other);
|
|
return rb_dlptr_new((char *)ptr + num, size - num, 0);
|
|
}
|
|
|
|
VALUE
|
|
rb_dlptr_minus(VALUE self, VALUE other)
|
|
{
|
|
void *ptr;
|
|
long num, size;
|
|
|
|
ptr = rb_dlptr2cptr(self);
|
|
size = RPTR_DATA(self)->size;
|
|
num = NUM2LONG(other);
|
|
return rb_dlptr_new((char *)ptr - num, size + num, 0);
|
|
}
|
|
|
|
VALUE
|
|
rb_dlptr_aref(int argc, VALUE argv[], VALUE self)
|
|
{
|
|
VALUE arg0, arg1;
|
|
VALUE retval = Qnil;
|
|
size_t offset, len;
|
|
|
|
switch( rb_scan_args(argc, argv, "11", &arg0, &arg1) ){
|
|
case 1:
|
|
offset = NUM2ULONG(arg0);
|
|
retval = INT2NUM(*((char*)RPTR_DATA(self)->ptr + offset));
|
|
break;
|
|
case 2:
|
|
offset = NUM2ULONG(arg0);
|
|
len = NUM2ULONG(arg1);
|
|
retval = rb_tainted_str_new((char *)RPTR_DATA(self)->ptr + offset, len);
|
|
break;
|
|
default:
|
|
rb_bug("rb_dlptr_aref()");
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
VALUE
|
|
rb_dlptr_aset(int argc, VALUE argv[], VALUE self)
|
|
{
|
|
VALUE arg0, arg1, arg2;
|
|
VALUE retval = Qnil;
|
|
size_t offset, len;
|
|
void *mem;
|
|
|
|
switch( rb_scan_args(argc, argv, "21", &arg0, &arg1, &arg2) ){
|
|
case 2:
|
|
offset = NUM2ULONG(arg0);
|
|
((char*)RPTR_DATA(self)->ptr)[offset] = NUM2UINT(arg1);
|
|
retval = arg1;
|
|
break;
|
|
case 3:
|
|
offset = NUM2ULONG(arg0);
|
|
len = NUM2ULONG(arg1);
|
|
if( TYPE(arg2) == T_STRING ){
|
|
mem = StringValuePtr(arg2);
|
|
}
|
|
else if( rb_obj_is_kind_of(arg2, rb_cDLCPtr) ){
|
|
mem = rb_dlptr2cptr(arg2);
|
|
}
|
|
else{
|
|
mem = NUM2PTR(arg2);
|
|
}
|
|
memcpy((char *)RPTR_DATA(self)->ptr + offset, mem, len);
|
|
retval = arg2;
|
|
break;
|
|
default:
|
|
rb_bug("rb_dlptr_aset()");
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
VALUE
|
|
rb_dlptr_size(int argc, VALUE argv[], VALUE self)
|
|
{
|
|
VALUE size;
|
|
|
|
if (rb_scan_args(argc, argv, "01", &size) == 0){
|
|
return LONG2NUM(RPTR_DATA(self)->size);
|
|
}
|
|
else{
|
|
RPTR_DATA(self)->size = NUM2LONG(size);
|
|
return size;
|
|
}
|
|
}
|
|
|
|
VALUE
|
|
rb_dlptr_s_to_ptr(VALUE self, VALUE val)
|
|
{
|
|
if( rb_obj_is_kind_of(val, rb_cIO) == Qtrue ){
|
|
rb_io_t *fptr;
|
|
FILE *fp;
|
|
GetOpenFile(val, fptr);
|
|
fp = rb_io_stdio_file(fptr);
|
|
return rb_dlptr_new(fp, 0, NULL);
|
|
}
|
|
else if( rb_obj_is_kind_of(val, rb_cString) == Qtrue ){
|
|
char *ptr = StringValuePtr(val);
|
|
return rb_dlptr_new(ptr, RSTRING_LEN(val), NULL);
|
|
}
|
|
else if( rb_respond_to(val, id_to_ptr) ){
|
|
VALUE vptr = rb_funcall(val, id_to_ptr, 0);
|
|
if( rb_obj_is_kind_of(vptr, rb_cDLCPtr) ){
|
|
return vptr;
|
|
}
|
|
else{
|
|
rb_raise(rb_eDLError, "to_ptr should return a CPtr object");
|
|
}
|
|
}
|
|
else{
|
|
return rb_dlptr_new(NUM2PTR(rb_Integer(val)), 0, NULL);
|
|
}
|
|
}
|
|
|
|
void
|
|
Init_dlptr()
|
|
{
|
|
id_to_ptr = rb_intern("to_ptr");
|
|
|
|
rb_cDLCPtr = rb_define_class_under(rb_mDL, "CPtr", rb_cObject);
|
|
rb_define_alloc_func(rb_cDLCPtr, rb_dlptr_s_allocate);
|
|
rb_define_singleton_method(rb_cDLCPtr, "malloc", rb_dlptr_s_malloc, -1);
|
|
rb_define_singleton_method(rb_cDLCPtr, "to_ptr", rb_dlptr_s_to_ptr, 1);
|
|
rb_define_singleton_method(rb_cDLCPtr, "[]", rb_dlptr_s_to_ptr, 1);
|
|
rb_define_method(rb_cDLCPtr, "initialize", rb_dlptr_initialize, -1);
|
|
rb_define_method(rb_cDLCPtr, "free=", rb_dlptr_free_set, 1);
|
|
rb_define_method(rb_cDLCPtr, "free", rb_dlptr_free_get, 0);
|
|
rb_define_method(rb_cDLCPtr, "to_i", rb_dlptr_to_i, 0);
|
|
rb_define_method(rb_cDLCPtr, "to_value", rb_dlptr_to_value, 0);
|
|
rb_define_method(rb_cDLCPtr, "ptr", rb_dlptr_ptr, 0);
|
|
rb_define_method(rb_cDLCPtr, "+@", rb_dlptr_ptr, 0);
|
|
rb_define_method(rb_cDLCPtr, "ref", rb_dlptr_ref, 0);
|
|
rb_define_method(rb_cDLCPtr, "-@", rb_dlptr_ref, 0);
|
|
rb_define_method(rb_cDLCPtr, "null?", rb_dlptr_null_p, 0);
|
|
rb_define_method(rb_cDLCPtr, "to_s", rb_dlptr_to_s, -1);
|
|
rb_define_method(rb_cDLCPtr, "to_str", rb_dlptr_to_str, -1);
|
|
rb_define_method(rb_cDLCPtr, "inspect", rb_dlptr_inspect, 0);
|
|
rb_define_method(rb_cDLCPtr, "<=>", rb_dlptr_cmp, 1);
|
|
rb_define_method(rb_cDLCPtr, "==", rb_dlptr_eql, 1);
|
|
rb_define_method(rb_cDLCPtr, "eql?", rb_dlptr_eql, 1);
|
|
rb_define_method(rb_cDLCPtr, "+", rb_dlptr_plus, 1);
|
|
rb_define_method(rb_cDLCPtr, "-", rb_dlptr_minus, 1);
|
|
rb_define_method(rb_cDLCPtr, "[]", rb_dlptr_aref, -1);
|
|
rb_define_method(rb_cDLCPtr, "[]=", rb_dlptr_aset, -1);
|
|
rb_define_method(rb_cDLCPtr, "size", rb_dlptr_size, -1);
|
|
rb_define_method(rb_cDLCPtr, "size=", rb_dlptr_size, -1);
|
|
|
|
rb_define_const(rb_mDL, "NULL", rb_dlptr_new(0, 0, 0));
|
|
}
|