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ruby--ruby/ext/dl/ptr.c

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/* -*- C -*-
* $Id$
*/
#include <ruby.h>
#include <version.h> /* for ruby version code */
#include "dl.h"
VALUE rb_cDLPtrData;
VALUE rb_mDLMemorySpace;
static VALUE DLMemoryTable;
#ifndef T_SYMBOL
# define T_SYMBOL T_FIXNUM
#endif
#if RUBY_VERSION_CODE < 171
static VALUE
rb_hash_delete(VALUE hash, VALUE key)
{
return rb_funcall(hash, rb_intern("delete"), 1, key);
}
#endif
static void
rb_dlmem_delete(void *ptr)
{
rb_hash_delete(DLMemoryTable, DLLONG2NUM(ptr));
}
static void
rb_dlmem_aset(void *ptr, VALUE obj)
{
if( obj == Qnil ){
rb_dlmem_delete(ptr);
}
else{
rb_hash_aset(DLMemoryTable, DLLONG2NUM(ptr), DLLONG2NUM(obj));
};
}
static VALUE
rb_dlmem_aref(void *ptr)
{
VALUE val;
val = rb_hash_aref(DLMemoryTable, DLLONG2NUM(ptr));
return val == Qnil ? Qnil : (VALUE)DLNUM2LONG(val);
}
void
dlptr_free(struct ptr_data *data)
{
if( data->ptr ){
DEBUG_CODE({
printf("dlptr_free(): removing the pointer `0x%x' from the MemorySpace\n",
data->ptr);
});
rb_dlmem_delete(data->ptr);
if( data->free ){
DEBUG_CODE({
printf("dlptr_free(): 0x%x(data->ptr:0x%x)\n",data->free,data->ptr);
});
(*(data->free))(data->ptr);
};
};
if( data->stype ) dlfree(data->stype);
if( data->ssize ) dlfree(data->ssize);
if( data->ids ) dlfree(data->ids);
}
void
dlptr_init(VALUE val)
{
struct ptr_data *data;
Data_Get_Struct(val, struct ptr_data, data);
DEBUG_CODE({
printf("dlptr_init(): add the pointer `0x%x' to the MemorySpace\n",
data->ptr);
});
rb_dlmem_aset(data->ptr, val);
}
VALUE
rb_dlptr_new(void *ptr, long size, freefunc_t func)
{
struct ptr_data *data;
VALUE val;
if( ptr ){
val = rb_dlmem_aref(ptr);
if( val == Qnil ){
val = Data_Make_Struct(rb_cDLPtrData, struct ptr_data,
0, dlptr_free, data);
data->ptr = ptr;
data->free = func;
data->ctype = DLPTR_CTYPE_UNKNOWN;
data->stype = NULL;
data->ssize = NULL;
data->slen = 0;
data->size = size;
data->ids = NULL;
data->ids_num = 0;
dlptr_init(val);
}
else{
if( func ){
Data_Get_Struct(val, struct ptr_data, data);
data->free = func;
};
};
}
else{
val = Qnil;
};
return val;
}
VALUE
rb_dlptr_alloc(long size, freefunc_t func)
{
return rb_dlptr_new(dlmalloc((size_t)size), size, func);
}
void *
rb_dlptr2cptr(VALUE val)
{
struct ptr_data *data;
void *ptr;
if( rb_obj_is_kind_of(val, rb_cDLPtrData) ){
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_new(int argc, VALUE argv[], VALUE klass)
{
VALUE ptr, sym, obj, size;
void *p = NULL;
freefunc_t f = NULL;
long s = 0;
switch( rb_scan_args(argc, argv, "12", &ptr, &size, &sym) ){
case 1:
p = (void*)(DLNUM2LONG(rb_Integer(ptr)));
break;
case 2:
p = (void*)(DLNUM2LONG(rb_Integer(ptr)));
s = DLNUM2LONG(size);
break;
case 3:
p = (void*)(DLNUM2LONG(rb_Integer(ptr)));
s = DLNUM2LONG(size);
f = rb_dlsym2csym(sym);
break;
default:
rb_bug("rb_dlptr_s_new");
};
obj = rb_dlptr_new(p,s,f);
rb_obj_call_init(obj, argc, argv);
return obj;
}
static VALUE
rb_dlptr_s_alloc(int argc, VALUE argv[], VALUE klass)
{
VALUE size, sym, obj;
int s;
freefunc_t f = NULL;
switch( rb_scan_args(argc, argv, "11", &size, &sym) ){
case 1:
s = NUM2INT(size);
break;
case 2:
s = NUM2INT(size);
f = rb_dlsym2csym(sym);
break;
default:
rb_bug("rb_dlptr_s_new");
};
obj = rb_dlptr_alloc(s,f);
rb_obj_call_init(obj, argc, argv);
return obj;
}
static VALUE
rb_dlptr_init(int argc, VALUE argv[], VALUE self)
{
return Qnil;
}
static VALUE
rb_dlptr_cast(int argc, VALUE argv[], VALUE self)
{
VALUE klass, rest, val, *pass_argv;
int pass_argc, i;
struct ptr_data *data;
Data_Get_Struct(self, struct ptr_data, data);
rb_scan_args(argc, argv, "1*", &klass, &rest);
/* prepare the arguments of `new' method */
pass_argc = argc + 1;
pass_argv = ALLOCA_N(VALUE, pass_argc);
pass_argv[0] = DLLONG2NUM(data->ptr);
pass_argv[1] = rb_dlsym_new(data->free, NULL, NULL);
for( i=2; i < pass_argc; i++ ){
pass_argv[i] = rb_ary_entry(rest,i-2);
};
/* remove the data */
((struct ptr_data *)(RDATA(self)->data))->ptr = 0;
(RDATA(self)->dfree)(RDATA(self)->data);
/* call the `new' method of klass with prepared arguments */
val = rb_funcall2(klass, rb_intern("new"), pass_argc, pass_argv);
RDATA(self)->basic.klass = RDATA(val)->basic.klass;
RDATA(self)->basic.flags = RDATA(val)->basic.flags;
RDATA(self)->dmark = RDATA(val)->dmark;
RDATA(self)->dfree = RDATA(val)->dfree;
RDATA(self)->data = RDATA(val)->data;
RDATA(val)->dmark = 0;
RDATA(val)->dfree = 0;
return Qnil;
}
VALUE
rb_dlptr_to_i(VALUE self)
{
struct ptr_data *data;
Data_Get_Struct(self, struct ptr_data, data);
return DLLONG2NUM(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;
int i;
Data_Get_Struct(self, struct ptr_data, data);
data->free = DLFREEFUNC(rb_dlsym2csym(val));
return Qnil;
}
VALUE
rb_dlptr_free_get(VALUE self)
{
struct ptr_data *pdata;
Data_Get_Struct(self, struct ptr_data, pdata);
return rb_dlsym_new(pdata->free,"(free)","0P");
}
VALUE
rb_dlptr_to_array(int argc, VALUE argv[], VALUE self)
{
struct ptr_data *data;
int n;
int i;
int t;
VALUE ary;
VALUE type, size;
Data_Get_Struct(self, struct ptr_data, data);
switch( rb_scan_args(argc, argv, "11", &type, &size) ){
case 2:
t = StringValuePtr(type)[0];
n = NUM2INT(size);
break;
case 1:
t = StringValuePtr(type)[0];
switch( t ){
case 'C':
n = data->size;
break;
case 'H':
n = data->size / sizeof(short);
break;
case 'I':
n = data->size / sizeof(int);
break;
case 'L':
n = data->size / sizeof(long);
break;
case 'F':
n = data->size / sizeof(float);
break;
case 'D':
n = data->size / sizeof(double);
break;
case 'S': case 'P':
n = data->size / sizeof(void*);
break;
default:
if( t == 'p' || t == 's' ){
int i;
for( i=0; ((void**)(data->ptr))[i]; i++ ){};
n = i;
}
else{
n = 0;
};
};
break;
default:
rb_bug("rb_dlptr_to_array");
};
ary = rb_ary_new();
for( i=0; i < n; i++ ){
switch( t ){
case 'C':
rb_ary_push(ary, INT2NUM(((char*)(data->ptr))[i]));
break;
case 'H':
rb_ary_push(ary, INT2NUM(((short*)(data->ptr))[i]));
break;
case 'I':
rb_ary_push(ary, INT2NUM(((int*)(data->ptr))[i]));
break;
case 'L':
rb_ary_push(ary, DLLONG2NUM(((long*)(data->ptr))[i]));
break;
case 'D':
rb_ary_push(ary, rb_float_new(((double*)(data->ptr))[i]));
case 'F':
rb_ary_push(ary, rb_float_new(((float*)(data->ptr))[i]));
break;
case 'S':
{
char *str = ((char**)(data->ptr))[i];
if( str ){
rb_ary_push(ary, rb_tainted_str_new2(str));
}
else{
rb_ary_push(ary, Qnil);
};
};
break;
case 's':
{
char *str = ((char**)(data->ptr))[i];
if( str ){
rb_ary_push(ary, rb_tainted_str_new2(str));
xfree(str);
}
else{
rb_ary_push(ary, Qnil);
};
};
break;
case 'P':
rb_ary_push(ary, rb_dlptr_new(((void**)(data->ptr))[i],0,0));
break;
case 'p':
rb_ary_push(ary,
rb_dlptr_new(((void**)(data->ptr))[i],0,dlfree));
break;
};
};
return ary;
}
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];
VALUE name;
Data_Get_Struct(self, struct ptr_data, data);
snprintf(str, 1023, "#<%s:0x%x ptr=0x%x size=%ld free=0x%x>",
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 DLLONG2NUM((long)ptr1 - (long)ptr2);
}
VALUE
rb_dlptr_plus(VALUE self, VALUE other)
{
void *ptr;
long num, size;
ptr = rb_dlptr2cptr(self);
size = RDLPTR(self)->size;
num = DLNUM2LONG(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 = RDLPTR(self)->size;
num = DLNUM2LONG(other);
return rb_dlptr_new((char *)ptr - num, size + num, 0);
}
VALUE
rb_dlptr_define_data_type(int argc, VALUE argv[], VALUE self)
{
VALUE data_type, type, rest, vid;
struct ptr_data *data;
int i, t, len, num;
char *ctype;
long size;
rb_scan_args(argc, argv, "11*", &data_type, &type, &rest);
Data_Get_Struct(self, struct ptr_data, data);
if( argc == 1 || (argc == 2 && type == Qnil) ){
if( NUM2INT(data_type) == DLPTR_CTYPE_UNKNOWN ){
data->ctype = DLPTR_CTYPE_UNKNOWN;
data->slen = 0;
data->ids_num = 0;
if( data->stype ){
dlfree(data->stype);
data->stype = NULL;
};
if( data->ids ){
dlfree(data->ids);
data->ids = NULL;
};
return Qnil;
}
else{
rb_raise(rb_eArgError, "wrong arguments");
};
};
t = NUM2INT(data_type);
StringValue(type);
Check_Type(rest, T_ARRAY);
num = RARRAY(rest)->len;
for( i=0; i<num; i++ ){
vid = rb_ary_entry(rest,i);
if( !(TYPE(vid)==T_STRING || TYPE(vid)==T_SYMBOL) ){
rb_raise(rb_eTypeError, "#%d must be a string or symbol", i + 2);
};
};
data->ctype = t;
data->slen = num;
data->ids_num = num;
if( data->stype ) dlfree(data->stype);
data->stype = (char*)dlmalloc(sizeof(char) * num);
if( data->ssize ) dlfree(data->ssize);
data->ssize = (int*)dlmalloc(sizeof(int) * num);
if( data->ids ) dlfree(data->ids);
data->ids = (ID*)dlmalloc(sizeof(ID) * data->ids_num);
ctype = StringValuePtr(type);
for( i=0; i<num; i++ ){
vid = rb_ary_entry(rest,i);
data->ids[i] = rb_to_id(vid);
data->stype[i] = *ctype;
ctype ++;
if( isdigit(*ctype) ){
char *p, *d;
for( p=ctype; isdigit(*p); p++ ) ;
d = ALLOCA_N(char, p - ctype + 1);
strncpy(d, ctype, p - ctype);
d[p - ctype] = '\0';
data->ssize[i] = atoi(d);
ctype = p;
}
else{
data->ssize[i] = 1;
};
};
if( *ctype ){
rb_raise(rb_eArgError, "too few/many arguments");
};
if( !data->size )
data->size = dlsizeof(RSTRING(type)->ptr);
return Qnil;
}
VALUE
rb_dlptr_define_struct(int argc, VALUE argv[], VALUE self)
{
VALUE *pass_argv;
int pass_argc, i;
pass_argc = argc + 1;
pass_argv = ALLOCA_N(VALUE, pass_argc);
pass_argv[0] = INT2FIX(DLPTR_CTYPE_STRUCT);
for( i=1; i<pass_argc; i++ ){
pass_argv[i] = argv[i-1];
};
return rb_dlptr_define_data_type(pass_argc, pass_argv, self);
}
VALUE
rb_dlptr_define_union(int argc, VALUE argv[], VALUE self)
{
VALUE *pass_argv;
int pass_argc, i;
pass_argc = argc + 1;
pass_argv = ALLOCA_N(VALUE, pass_argc);
pass_argv[0] = INT2FIX(DLPTR_CTYPE_UNION);
for( i=1; i<pass_argc; i++ ){
pass_argv[i] = argv[i-1];
};
return rb_dlptr_define_data_type(pass_argc, pass_argv, self);
}
VALUE
rb_dlptr_get_data_type(VALUE self)
{
struct ptr_data *data;
Data_Get_Struct(self, struct ptr_data, data);
if( data->stype )
return rb_assoc_new(INT2FIX(data->ctype),
rb_tainted_str_new(data->stype, data->slen));
else
return rb_assoc_new(INT2FIX(data->ctype), Qnil);
}
static VALUE
cary2ary(void *ptr, char t, int len)
{
VALUE ary;
VALUE elem;
int i;
if( len < 1 )
return Qnil;
if( len == 1 ){
switch( t ){
case 'I': case 'i':
elem = INT2NUM(*((int*)ptr));
ptr = (char *)ptr + sizeof(int);
break;
case 'L': case 'l':
elem = DLLONG2NUM(*((long*)ptr));
ptr = (char *)ptr + sizeof(long);
break;
case 'P': case 'p':
elem = rb_dlptr_new(*((void**)ptr),0, 0);
ptr = (char *)ptr + sizeof(void*);
break;
case 'F': case 'f':
elem = rb_float_new(*((float*)ptr));
ptr = (char *)ptr + sizeof(float);
break;
case 'D': case 'd':
elem = rb_float_new(*((float*)ptr));
ptr = (char *)ptr + sizeof(double);
break;
case 'C': case 'c':
elem = INT2NUM(*((char*)ptr));
ptr = (char *)ptr + sizeof(char);
break;
case 'H': case 'h':
elem = INT2NUM(*((short*)ptr));
ptr = (char *)ptr + sizeof(short);
default:
rb_raise(rb_eDLTypeError, "unsupported type '%c'", t);
};
return elem;
};
ary = rb_ary_new();
for( i=0; i < len; i++ ){
switch( t ){
case 'I': case 'i':
elem = INT2NUM(*((int*)ptr));
ptr = (char *)ptr + sizeof(int);
break;
case 'L': case 'l':
elem = DLLONG2NUM(*((long*)ptr));
ptr = (char *)ptr + sizeof(long);
break;
case 'P': case 'p':
elem = rb_dlptr_new(*((void**)ptr), 0, 0);
ptr = (char *)ptr + sizeof(void*);
break;
case 'F': case 'f':
elem = rb_float_new(*((float*)ptr));
ptr = (char *)ptr + sizeof(float);
break;
case 'D': case 'd':
elem = rb_float_new(*((float*)ptr));
ptr = (char *)ptr + sizeof(double);
break;
case 'C': case 'c':
elem = INT2NUM(*((char*)ptr));
ptr = (char *)ptr + sizeof(char);
break;
case 'H': case 'h':
elem = INT2NUM(*((short*)ptr));
ptr = (char *)ptr + sizeof(short);
default:
rb_raise(rb_eDLTypeError, "unsupported type '%c'", t);
};
rb_ary_push(ary, elem);
};
return ary;
}
VALUE
rb_dlptr_aref(int argc, VALUE argv[], VALUE self)
{
VALUE val, key = Qnil, num = Qnil;
ID id;
int idx;
struct ptr_data *data;
int i;
int offset;
if( rb_scan_args(argc, argv, "11", &key, &num) == 1 ){
num = INT2NUM(0);
};
if( TYPE(key) == T_FIXNUM || TYPE(key) == T_BIGNUM ){
VALUE pass[1];
pass[0] = num;
return rb_dlptr_to_str(1, pass, rb_dlptr_plus(self, key));
};
if( ! (TYPE(key) == T_STRING || TYPE(key) == T_SYMBOL ) ){
rb_raise(rb_eTypeError, "the key must be a string or symbol");
};
id = rb_to_id(key);
Data_Get_Struct(self, struct ptr_data, data);
offset = 0;
switch( data->ctype ){
case DLPTR_CTYPE_STRUCT:
for( i=0; i < data->ids_num; i++ ){
if( data->ids[i] == id ){
switch( data->stype[i] ){
case 'I':
DLALIGN(data->ptr,offset,INT_ALIGN);
break;
case 'L':
DLALIGN(data->ptr,offset,LONG_ALIGN);
break;
case 'P':
DLALIGN(data->ptr,offset,VOIDP_ALIGN);
case 'F':
DLALIGN(data->ptr,offset,FLOAT_ALIGN);
break;
case 'D':
DLALIGN(data->ptr,offset,DOUBLE_ALIGN);
break;
case 'C':
break;
case 'H':
DLALIGN(data->ptr,offset,SHORT_ALIGN);
break;
default:
rb_raise(rb_eDLTypeError, "unsupported type '%c'", data->stype[i]);
};
return cary2ary((char *)data->ptr + offset, data->stype[i], data->ssize[i]);
};
switch( data->stype[i] ){
case 'I':
offset += sizeof(int) * data->ssize[i];
break;
case 'L':
offset += sizeof(long) * data->ssize[i];
break;
case 'P':
offset += sizeof(void*) * data->ssize[i];
break;
case 'F':
offset += sizeof(float) * data->ssize[i];
break;
case 'D':
offset += sizeof(double) * data->ssize[i];
break;
case 'C':
offset += sizeof(char) * data->ssize[i];
break;
case 'H':
offset += sizeof(short) * data->ssize[i];
break;
default:
rb_raise(rb_eDLTypeError, "unsupported type '%c'", data->stype[i]);
};
};
break;
case DLPTR_CTYPE_UNION:
for( i=0; i < data->ids_num; i++ ){
if( data->ids[i] == id ){
return cary2ary((char *)data->ptr + offset, data->stype[i], data->ssize[i]);
};
};
break;
}; /* end of switch */
rb_raise(rb_eNameError, "undefined key `%s' for %s",
rb_id2name(id), rb_class2name(CLASS_OF(self)));
return Qnil;
}
static void *
ary2cary(char t, VALUE val, long *size)
{
void *ptr;
if( TYPE(val) == T_ARRAY ){
ptr = rb_ary2cary(t, val, size);
}
else{
ptr = rb_ary2cary(t, rb_ary_new3(1, val), size);
};
return ptr;
}
VALUE
rb_dlptr_aset(int argc, VALUE argv[], VALUE self)
{
VALUE key = Qnil, num = Qnil, val = Qnil;
ID id;
struct ptr_data *data;
int i;
int offset;
long memsize;
void *memimg;
switch( rb_scan_args(argc, argv, "21", &key, &num, &val) ){
case 2:
val = num;
num = Qnil;
break;
};
if( TYPE(key) == T_FIXNUM || TYPE(key) == T_BIGNUM ){
void *dst, *src;
int len;
StringValue(val);
Data_Get_Struct(self, struct ptr_data, data);
dst = (void*)((long)(data->ptr) + DLNUM2LONG(key));
src = RSTRING(val)->ptr;
if( num == Qnil ){
len = RSTRING(val)->len;
}
else{
len = NUM2INT(num);
};
memcpy(dst, src, len);
return val;
};
if( ! (TYPE(key) == T_STRING || TYPE(key) == T_SYMBOL ) ){
rb_raise(rb_eTypeError, "the key must be a string or symbol");
};
id = rb_to_id(key);
Data_Get_Struct(self, struct ptr_data, data);
switch( data->ctype ){
case DLPTR_CTYPE_STRUCT:
offset = 0;
for( i=0; i < data->ids_num; i++ ){
if( data->ids[i] == id ){
switch( data->stype[i] ){
case 'I':
DLALIGN(data->ptr,offset,INT_ALIGN);
break;
case 'L':
DLALIGN(data->ptr,offset,LONG_ALIGN);
break;
case 'P':
DLALIGN(data->ptr,offset,VOIDP_ALIGN);
break;
case 'D':
DLALIGN(data->ptr,offset,DOUBLE_ALIGN);
break;
case 'F':
DLALIGN(data->ptr,offset,FLOAT_ALIGN);
break;
case 'C':
break;
case 'H':
DLALIGN(data->ptr,offset,SHORT_ALIGN);
break;
default:
rb_raise(rb_eDLTypeError, "unsupported type '%c'", data->stype[i]);
};
memimg = ary2cary(data->stype[i], val, &memsize);
memcpy((char *)data->ptr + offset, memimg, memsize);
return val;
};
switch( data->stype[i] ){
case 'I':
case 'i':
offset += sizeof(int) * data->ssize[i];
break;
case 'L':
case 'l':
offset += sizeof(long) * data->ssize[i];
break;
case 'P':
case 'p':
offset += sizeof(void*) * data->ssize[i];
break;
case 'D':
case 'd':
offset += sizeof(double) * data->ssize[i];
break;
case 'F':
case 'f':
offset += sizeof(float) * data->ssize[i];
break;
case 'C':
case 'c':
offset += sizeof(char) * data->ssize[i];
break;
case 'H':
case 'h':
offset += sizeof(short) * data->ssize[i];
break;
default:
rb_raise(rb_eDLTypeError, "unsupported type '%c'", data->stype[i]);
};
};
return val;
/* break; */
case DLPTR_CTYPE_UNION:
for( i=0; i < data->ids_num; i++ ){
if( data->ids[i] == id ){
switch( data->stype[i] ){
case 'I': case 'i':
memsize = sizeof(int) * data->ssize[i];
break;
case 'L': case 'l':
memsize = sizeof(long) * data->ssize[i];
break;
case 'P': case 'p':
memsize = sizeof(void*) * data->ssize[i];
break;
case 'F': case 'f':
memsize = sizeof(float) * data->ssize[i];
break;
case 'D': case 'd':
memsize = sizeof(double) * data->ssize[i];
break;
case 'C': case 'c':
memsize = sizeof(char) * data->ssize[i];
break;
case 'H': case 'h':
memsize = sizeof(short) * data->ssize[i];
break;
default:
rb_raise(rb_eDLTypeError, "unsupported type '%c'", data->stype[i]);
};
memimg = ary2cary(data->stype[i], val, NULL);
memcpy(data->ptr, memimg, memsize);
};
};
return val;
/* break; */
};
rb_raise(rb_eNameError, "undefined key `%s' for %s",
rb_id2name(id), rb_class2name(CLASS_OF(self)));
return Qnil;
}
VALUE
rb_dlptr_size(int argc, VALUE argv[], VALUE self)
{
VALUE size;
if( rb_scan_args(argc, argv, "01", &size) == 0){
return DLLONG2NUM(RDLPTR(self)->size);
}
else{
RDLPTR(self)->size = DLNUM2LONG(size);
return size;
};
}
static VALUE
dlmem_each_i(VALUE assoc, void *data)
{
VALUE key, val;
key = rb_ary_entry(assoc, 0);
val = rb_ary_entry(assoc, 1);
rb_yield(rb_assoc_new(key,(VALUE)DLNUM2LONG(val)));
return Qnil;
}
VALUE
rb_dlmem_each(VALUE self)
{
rb_iterate(rb_each, DLMemoryTable, dlmem_each_i, 0);
return Qnil;
}
void
Init_dlptr()
{
rb_cDLPtrData = rb_define_class_under(rb_mDL, "PtrData", rb_cData);
rb_define_singleton_method(rb_cDLPtrData, "new", rb_dlptr_s_new, -1);
rb_define_singleton_method(rb_cDLPtrData, "alloc", rb_dlptr_s_alloc, -1);
rb_define_method(rb_cDLPtrData, "initialize", rb_dlptr_init, -1);
rb_define_method(rb_cDLPtrData, "free=", rb_dlptr_free_set, 1);
rb_define_method(rb_cDLPtrData, "free", rb_dlptr_free_get, 0);
rb_define_method(rb_cDLPtrData, "to_i", rb_dlptr_to_i, 0);
rb_define_method(rb_cDLPtrData, "ptr", rb_dlptr_ptr, 0);
rb_define_method(rb_cDLPtrData, "+@", rb_dlptr_ptr, 0);
rb_define_method(rb_cDLPtrData, "ref", rb_dlptr_ref, 0);
rb_define_method(rb_cDLPtrData, "-@", rb_dlptr_ref, 0);
rb_define_method(rb_cDLPtrData, "null?", rb_dlptr_null_p, 0);
rb_define_method(rb_cDLPtrData, "to_a", rb_dlptr_to_array, -1);
rb_define_method(rb_cDLPtrData, "to_s", rb_dlptr_to_s, -1);
rb_define_method(rb_cDLPtrData, "to_str", rb_dlptr_to_str, -1);
rb_define_method(rb_cDLPtrData, "inspect", rb_dlptr_inspect, 0);
rb_define_method(rb_cDLPtrData, "<=>", rb_dlptr_cmp, 1);
rb_define_method(rb_cDLPtrData, "==", rb_dlptr_eql, 1);
rb_define_method(rb_cDLPtrData, "eql?", rb_dlptr_eql, 1);
rb_define_method(rb_cDLPtrData, "+", rb_dlptr_plus, 1);
rb_define_method(rb_cDLPtrData, "-", rb_dlptr_minus, 1);
rb_define_method(rb_cDLPtrData, "cast!", rb_dlptr_cast, -1);
rb_define_method(rb_cDLPtrData, "define_data_type",
rb_dlptr_define_data_type, -1);
rb_define_method(rb_cDLPtrData, "struct!", rb_dlptr_define_struct, -1);
rb_define_method(rb_cDLPtrData, "union!", rb_dlptr_define_union, -1);
rb_define_method(rb_cDLPtrData, "data_type", rb_dlptr_get_data_type, 0);
rb_define_method(rb_cDLPtrData, "[]", rb_dlptr_aref, -1);
rb_define_method(rb_cDLPtrData, "[]=", rb_dlptr_aset, -1);
rb_define_method(rb_cDLPtrData, "size", rb_dlptr_size, -1);
rb_define_method(rb_cDLPtrData, "size=", rb_dlptr_size, -1);
rb_mDLMemorySpace = rb_define_module_under(rb_mDL, "MemorySpace");
DLMemoryTable = rb_hash_new();
rb_define_const(rb_mDLMemorySpace, "MemoryTable", DLMemoryTable);
rb_define_module_function(rb_mDLMemorySpace, "each", rb_dlmem_each, 0);
}
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