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ruby/ext/dl/ptr.c

1069 строки
23 KiB
C
Исходник Ответственный История

/* -*- C -*-
* $Id$
*/
#include <ruby.h>
#include <ctype.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_secure(4);
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);
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);
if (ptr) {
val = rb_dlmem_aref(ptr);
if (val == Qnil) {
val = Data_Make_Struct(klass, 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_new(void *ptr, long size, freefunc_t func)
{
return rb_dlptr_new2(rb_cDLPtrData, ptr, size, func);
}
VALUE
rb_dlptr_malloc(long size, freefunc_t func)
{
void *ptr;
rb_secure(4);
ptr = dlmalloc((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_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_allocate(VALUE klass)
{
VALUE obj;
struct ptr_data *data;
rb_secure(4);
obj = Data_Make_Struct(klass, struct ptr_data, 0, dlptr_free, data);
data->ptr = 0;
data->free = 0;
data->ctype = DLPTR_CTYPE_UNKNOWN;
data->stype = NULL;
data->ssize = NULL;
data->slen = 0;
data->size = 0;
data->ids = NULL;
data->ids_num = 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*)(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_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 = 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_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 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;
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];
Data_Get_Struct(self, struct ptr_data, data);
snprintf(str, 1023, "#<%s:0x%p ptr=0x%p size=%ld free=0x%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 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, num;
char *ctype;
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++) {
rb_to_id(rb_ary_entry(rest,i));
}
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':
elem = INT2NUM(*((int*)ptr));
ptr = (char *)ptr + sizeof(int);
break;
case 'L':
elem = DLLONG2NUM(*((long*)ptr));
ptr = (char *)ptr + sizeof(long);
break;
case 'P':
case 'S':
elem = rb_dlptr_new(*((void**)ptr),0, 0);
ptr = (char *)ptr + sizeof(void*);
break;
case 'F':
elem = rb_float_new(*((float*)ptr));
ptr = (char *)ptr + sizeof(float);
break;
case 'D':
elem = rb_float_new(*((double*)ptr));
ptr = (char *)ptr + sizeof(double);
break;
case 'C':
elem = INT2NUM(*((char*)ptr));
ptr = (char *)ptr + sizeof(char);
break;
case 'H':
elem = INT2NUM(*((short*)ptr));
ptr = (char *)ptr + sizeof(short);
break;
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':
elem = INT2NUM(*((int*)ptr));
ptr = (char *)ptr + sizeof(int);
break;
case 'L':
elem = DLLONG2NUM(*((long*)ptr));
ptr = (char *)ptr + sizeof(long);
break;
case 'P':
case 'S':
elem = rb_dlptr_new(*((void**)ptr), 0, 0);
ptr = (char *)ptr + sizeof(void*);
break;
case 'F':
elem = rb_float_new(*((float*)ptr));
ptr = (char *)ptr + sizeof(float);
break;
case 'D':
elem = rb_float_new(*((float*)ptr));
ptr = (char *)ptr + sizeof(double);
break;
case 'C':
elem = INT2NUM(*((char*)ptr));
ptr = (char *)ptr + sizeof(char);
break;
case 'H':
elem = INT2NUM(*((short*)ptr));
ptr = (char *)ptr + sizeof(short);
break;
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 key = Qnil, num = Qnil;
ID id;
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));
}
rb_to_id(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':
case 'S':
DLALIGN(data->ptr,offset,VOIDP_ALIGN);
break;
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':
case 'S':
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;
rb_secure(4);
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;
long len;
StringValue(val);
Data_Get_Struct(self, struct ptr_data, data);
dst = (void*)((long)(data->ptr) + DLNUM2LONG(key));
src = RSTRING(val)->ptr;
len = RSTRING(val)->len;
if (num == Qnil) {
memcpy(dst, src, len);
}
else{
long n = NUM2INT(num);
memcpy(dst, src, n < len ? n : len);
if (n > len) MEMZERO((char*)dst + len, char, n - len);
}
return val;
}
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':
case 'S':
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':
case 'S':
case 's':
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':
case 'S': case 's':
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_cObject);
rb_define_alloc_func(rb_cDLPtrData, rb_dlptr_s_allocate);
rb_define_singleton_method(rb_cDLPtrData, "malloc", rb_dlptr_s_malloc, -1);
rb_define_method(rb_cDLPtrData, "initialize", rb_dlptr_initialize, -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, "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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