C++ (Cpp) rb_alloc_tmp_buffer示例

示例#1

文件： string_spec.c 项目： JesseChavez/rubinius

VALUE string_spec_rb_alloc_tmp_buffer(VALUE self, VALUE len) {
  VALUE str;

  char* s = (char*)rb_alloc_tmp_buffer(&str, FIX2INT(len));

  return str;
}

示例#2

文件： ngraph.c 项目： htrb/ngraph-gtk

static VALUE
inst_put_sarray(VALUE self, VALUE arg, const char *field)
{
  struct ngraph_instance *inst;
  ngraph_value ary;
  int num, i;
  VALUE str, tmpstr;

  inst = check_id(self);
  if (inst == NULL) {
    return Qnil;
  }

  if (NIL_P(arg)) {
    num = 0;
  } else {
    if (!RB_TYPE_P(arg, T_ARRAY)) {
      rb_raise(rb_eArgError, "%s#%s: the argument must be an Array", rb_obj_classname(self), field);
    }

    num = RARRAY_LEN(arg);
  }

  ary.ary = NULL;
  if (num > 0) {
    ary.ary =  rb_alloc_tmp_buffer(&tmpstr, sizeof(*ary.ary) + sizeof(ngraph_value) * num);
    ary.ary->num = num;
    if (ary.ary) {
      for (i = 0; i < num; i++) {
        str = rb_ary_entry(arg, i);
        ary.ary->ary[i].str = StringValueCStr(str);
      }
    }
  }

  inst->rcode = ngraph_object_put(inst->obj, field, inst->id, &ary);

  if (ary.ary) {
    rb_free_tmp_buffer(&tmpstr);
  }

  if (inst->rcode < 0) {
    return Qnil;
  }

  return arg;
}

示例#3

文件： ngraph.c 项目： htrb/ngraph-gtk

static struct ngraph_array *
allocate_darray(VALUE self, volatile VALUE *tmpstr, VALUE arg, const char *field)
{
  struct ngraph_array *narray;
  int i, num;
  VALUE ary;

  ary = get_array_arg(self, field, arg, &num);

  narray = rb_alloc_tmp_buffer(tmpstr, sizeof(*narray) + sizeof(ngraph_value) * num);
  if (narray == NULL) {
    return NULL;
  }

  narray->num = num;
  for (i = 0; i < num; i++) {
    narray->ary[i].d = NUM2DBL(rb_ary_entry(ary, i));
  }

  return narray;
}