int ei_x_encode_double(ei_x_buff* x, double dbl)
{
int i = x->index;
ei_encode_double(NULL, &i, dbl);
if (!x_fix_buff(x, i))
return -1;
return ei_encode_double(x->buff, &x->index, dbl);
}
void
erl_lua_tonumber(lua_drv_t *driver_data, char *buf, int index)
{
long i;
double res;
int encode_i = 0;
int size;
char *eibuf;
ei_decode_long(buf, &index, &i);
res = lua_tonumber(driver_data->L, i);
ei_encode_version(NULL, &encode_i);
if ((long long) res == res) {
ei_encode_longlong(NULL, &encode_i, (long long) res);
size = encode_i;
encode_i = 0;
eibuf = malloc(sizeof(char) * (size + 1));
ei_encode_version(eibuf, &encode_i);
ei_encode_longlong(eibuf, &encode_i, res);
} else {
ei_encode_double(NULL, &encode_i, res);
size = encode_i;
encode_i = 0;
eibuf = malloc(sizeof(char) * (size + 1));
ei_encode_version(eibuf, &encode_i);
ei_encode_double(eibuf, &encode_i, res);
}
ErlDrvTermData spec[] = {
ERL_DRV_ATOM, ATOM_OK,
ERL_DRV_BUF2BINARY, (ErlDrvTermData) eibuf, size,
ERL_DRV_TUPLE, 2
};
erl_drv_output_term(driver_data->drvport, spec, sizeof(spec) / sizeof(spec[0]));
free(eibuf);
}
static int mn_send_write(int fd, erlang_pid *mnesia, const char *key, ei_reg_obj *obj)
{
char sbuf[EISMALLBUF];
char *dbuf = NULL;
char *msgbuf;
int index = 0;
int keylen = strlen(key) + 1;
int len = 32 + keylen + obj->size;
if (len > EISMALLBUF)
if (!(dbuf = malloc(len)))
return -1;
msgbuf = (dbuf ? dbuf : sbuf);
ei_encode_version(msgbuf,&index);
ei_encode_tuple_header(msgbuf,&index,6);
ei_encode_atom(msgbuf,&index,EI_MNESIA_WRITE);
ei_encode_string(msgbuf,&index,key);
ei_encode_long(msgbuf,&index,keylen);
ei_encode_long(msgbuf,&index,obj->attr);
ei_encode_long(msgbuf,&index,obj->size);
switch (ei_reg_typeof(obj)) {
case EI_INT:
ei_encode_long(msgbuf,&index,obj->val.i);
break;
case EI_FLT:
ei_encode_double(msgbuf,&index,obj->val.f);
break;
case EI_STR:
if (obj->size > 0) ei_encode_string(msgbuf,&index,obj->val.s);
else ei_encode_long(msgbuf,&index, (long)NULL); /* just the NULL pointer */
break;
case EI_BIN:
if (obj->size > 0) ei_encode_binary(msgbuf,&index,obj->val.p,obj->size);
else ei_encode_long(msgbuf,&index,(long)(obj->val.p)); /* just the pointer */
break;
default:
if (dbuf) free(dbuf);
return -1;
}
/* send it */
if (ei_send_encoded(fd,mnesia,msgbuf,index)) {
if (dbuf) free(dbuf);
return -1;
}
if (dbuf) free(dbuf);
return 0;
}
int push(int index, const QVariant & v)
{
switch (v.type())
{
case QMetaType::Int:
ei_encode_long(_buf, &index, v.toInt());
break;
case QMetaType::Double:
ei_encode_double(_buf, &index, v.toDouble());
break;
case QMetaType::QString:
ei_encode_string(_buf, &index, qPrintable(v.toString()));
break;
default:
qWarning("can't cast QVariant to term");
}
return index;
}
int main(void)
#endif
{
ErlConnect conp;
Erl_IpAddr thisipaddr = (Erl_IpAddr)0;
FILE *fp = (FILE *)0;
char* charp = "foo";
double *doublep = NULL;
double doublex = 0.0;
ei_cnode xec;
ei_reg *ei_regp = NULL;
ei_term eterm;
ei_x_buff eix;
erlang_big *bigp = NULL;
erlang_fun efun;
erlang_msg *msgp = NULL;
erlang_msg emsg;
erlang_pid *pidp = NULL;
erlang_pid epid;
erlang_port eport;
erlang_ref eref;
erlang_trace etrace;
int *intp = NULL;
int intx = 0;
long *longp = NULL;
long longx = 0;
short creation = 0;
struct ei_reg_stat *ei_reg_statp = NULL;
struct ei_reg_tabstat *ei_reg_tabstatp = NULL;
struct hostent *hostp = NULL;
unsigned char * ucharp = (unsigned char *)"foo";
unsigned long *ulongp = NULL;
unsigned long ulongx = 0;
void *voidp = NULL;
#ifndef VXWORKS
EI_LONGLONG *longlongp = (EI_LONGLONG*)NULL;
EI_LONGLONG longlongx = 0;
EI_ULONGLONG *ulonglongp = (EI_ULONGLONG*)NULL;
EI_ULONGLONG ulonglongx = 0;
#endif
enum erlang_char_encoding enc;
intx = erl_errno;
ei_connect_init(&xec, charp, charp, creation);
ei_connect_xinit (&xec, charp, charp, charp, thisipaddr, charp, creation);
ei_connect(&xec, charp);
ei_xconnect (&xec, thisipaddr, charp);
ei_receive(intx, ucharp, intx);
ei_receive_msg(intx, &emsg, &eix);
ei_xreceive_msg(intx, &emsg, &eix);
ei_send(intx, &epid, charp, intx);
ei_reg_send(&xec, intx, charp, charp, intx);
ei_rpc(&xec, intx, charp, charp, charp, intx, &eix);
ei_rpc_to(&xec, intx, charp, charp, charp, intx);
ei_rpc_from(&xec, intx, intx, &emsg, &eix);
ei_publish(&xec, intx);
ei_accept(&xec, intx, &conp);
ei_unpublish(&xec);
ei_thisnodename(&xec);
ei_thishostname(&xec);
ei_thisalivename(&xec);
ei_self(&xec);
ei_gethostbyname(charp);
ei_gethostbyaddr(charp, intx, intx);
ei_gethostbyname_r(charp, hostp, charp, intx, intp);
ei_gethostbyaddr_r(charp, intx, intx, hostp, charp, intx, intp);
ei_encode_version(charp, intp);
ei_x_encode_version(&eix);
ei_encode_long(charp, intp, longx);
ei_x_encode_long(&eix, longx);
ei_encode_ulong(charp, intp, ulongx);
ei_x_encode_ulong(&eix, ulongx);
ei_encode_double(charp, intp, doublex);
ei_x_encode_double(&eix, doublex);
ei_encode_boolean(charp, intp, intx);
ei_x_encode_boolean(&eix, intx);
ei_encode_char(charp, intp, 'a');
ei_x_encode_char(&eix, 'a');
ei_encode_string(charp, intp, charp);
ei_encode_string_len(charp, intp, charp, intx);
ei_x_encode_string(&eix, charp);
ei_x_encode_string_len(&eix, charp, intx);
ei_encode_atom(charp, intp, charp);
ei_encode_atom_as(charp, intp, charp, ERLANG_LATIN1, ERLANG_UTF8);
ei_encode_atom_len(charp, intp, charp, intx);
ei_encode_atom_len_as(charp, intp, charp, intx, ERLANG_ASCII, ERLANG_LATIN1);
ei_x_encode_atom(&eix, charp);
ei_x_encode_atom_as(&eix, charp, ERLANG_LATIN1, ERLANG_UTF8);
ei_x_encode_atom_len(&eix, charp, intx);
ei_x_encode_atom_len_as(&eix, charp, intx, ERLANG_LATIN1, ERLANG_UTF8);
ei_encode_binary(charp, intp, (void *)0, longx);
ei_x_encode_binary(&eix, (void*)0, intx);
ei_encode_pid(charp, intp, &epid);
ei_x_encode_pid(&eix, &epid);
ei_encode_fun(charp, intp, &efun);
ei_x_encode_fun(&eix, &efun);
ei_encode_port(charp, intp, &eport);
ei_x_encode_port(&eix, &eport);
ei_encode_ref(charp, intp, &eref);
ei_x_encode_ref(&eix, &eref);
ei_encode_trace(charp, intp, &etrace);
ei_x_encode_trace(&eix, &etrace);
ei_encode_tuple_header(charp, intp, intx);
ei_x_encode_tuple_header(&eix, longx);
ei_encode_list_header(charp, intp, intx);
ei_x_encode_list_header(&eix, longx);
/* #define ei_encode_empty_list(buf,i) ei_encode_list_header(buf,i,0) */
ei_x_encode_empty_list(&eix);
ei_get_type(charp, intp, intp, intp);
ei_get_type_internal(charp, intp, intp, intp);
ei_decode_version(charp, intp, intp);
ei_decode_long(charp, intp, longp);
ei_decode_ulong(charp, intp, ulongp);
ei_decode_double(charp, intp, doublep);
ei_decode_boolean(charp, intp, intp);
ei_decode_char(charp, intp, charp);
ei_decode_string(charp, intp, charp);
ei_decode_atom(charp, intp, charp);
ei_decode_atom_as(charp, intp, charp, MAXATOMLEN_UTF8, ERLANG_WHATEVER, &enc, &enc);
ei_decode_binary(charp, intp, (void *)0, longp);
ei_decode_fun(charp, intp, &efun);
free_fun(&efun);
ei_decode_pid(charp, intp, &epid);
ei_decode_port(charp, intp, &eport);
ei_decode_ref(charp, intp, &eref);
ei_decode_trace(charp, intp, &etrace);
ei_decode_tuple_header(charp, intp, intp);
ei_decode_list_header(charp, intp, intp);
ei_decode_ei_term(charp, intp, &eterm);
ei_print_term(fp, charp, intp);
ei_s_print_term(&charp, charp, intp);
ei_x_format(&eix, charp);
ei_x_format_wo_ver(&eix, charp);
ei_x_new(&eix);
ei_x_new_with_version(&eix);
ei_x_free(&eix);
ei_x_append(&eix, &eix);
ei_x_append_buf(&eix, charp, intx);
ei_skip_term(charp, intp);
ei_reg_open(intx);
ei_reg_resize(ei_regp, intx);
ei_reg_close(ei_regp);
ei_reg_setival(ei_regp, charp, longx);
ei_reg_setfval(ei_regp, charp, doublex);
ei_reg_setsval(ei_regp, charp, charp);
ei_reg_setpval(ei_regp, charp, voidp, intx);
ei_reg_setval(ei_regp, charp, intx);
ei_reg_getival(ei_regp, charp);
ei_reg_getfval(ei_regp, charp);
ei_reg_getsval(ei_regp, charp);
ei_reg_getpval(ei_regp, charp, intp);
ei_reg_getval(ei_regp, charp, intx);
ei_reg_markdirty(ei_regp, charp);
ei_reg_delete(ei_regp, charp);
ei_reg_stat(ei_regp, charp, ei_reg_statp);
ei_reg_tabstat(ei_regp, ei_reg_tabstatp);
ei_reg_dump(intx, ei_regp, charp, intx);
ei_reg_restore(intx, ei_regp, charp);
ei_reg_purge(ei_regp);
#if defined(HAVE_GMP_H) && defined(HAVE_LIBGMP)
{
mpz_t obj;
ei_decode_bignum(charp, intp, obj);
ei_encode_bignum(charp, intp, obj);
ei_x_encode_bignum(&eix, obj);
}
#endif /* HAVE_GMP_H && HAVE_LIBGMP */
#ifndef VXWORKS
ei_decode_longlong(charp, intp, longlongp);
ei_decode_ulonglong(charp, intp, ulonglongp);
ei_encode_longlong(charp, intp, longlongx);
ei_encode_ulonglong(charp, intp, ulonglongx);
ei_x_encode_longlong(&eix, longlongx);
ei_x_encode_ulonglong(&eix, ulonglongx);
#endif
#ifdef USE_EI_UNDOCUMENTED
ei_decode_intlist(charp, intp, longp, intp);
ei_receive_encoded(intx, &charp, intp, msgp, intp);
ei_send_encoded(intx, pidp, charp, intx);
ei_send_reg_encoded(intx, pidp, charp, charp, intx);
ei_decode_big(charp, intp, bigp);
ei_big_comp(bigp, bigp);
ei_big_to_double(bigp, doublep);
ei_small_to_big(intx, bigp);
ei_alloc_big(intx);
ei_free_big(bigp);
#endif /* USE_EI_UNDOCUMENTED */
return
BUFSIZ +
EAGAIN +
EHOSTUNREACH +
EIO +
EI_BIN +
EI_DELET +
EI_DIRTY +
EI_FLT +
EI_FORCE +
EI_INT +
EI_NOPURGE +
EI_STR +
EMSGSIZE +
ENOMEM +
ERL_ERROR +
ERL_EXIT +
ERL_LINK +
ERL_MSG +
ERL_NO_TIMEOUT +
ERL_REG_SEND +
ERL_SEND +
ERL_TICK +
ERL_TIMEOUT +
ERL_UNLINK +
ETIMEDOUT +
MAXATOMLEN;
}
/*!
* Take an arbitrary mixed list of integers and floats and add all numbers,
* returning the resulting sum.
*
* \param[in] req Request
* \param[in,out] res Result
* \param[in,out] drv_state Driver state
* \param[in,out] trd_state Thread state
*/
static void
handle_sum(gd_req_t *req, gd_res_t *res, gdt_drv_t *drv, gdt_trd_t *trd) {
int type, size;
/* Determine type and size */
if (ei_get_type(req->buf, &req->index, &type, &size) || size <= 0)
return error_set(res, GDE_ERR_TYPE);
/* Allocate memory for numbers */
double *values, sum = 0;
if (!(values = driver_alloc(sizeof(double) * size)))
return error_set(res, GDE_ERR_MEMORY);
/* Decode list */
switch (type) {
/* Decode integer list interpreted as string */
case ERL_STRING_EXT: {
char value[size];
if (ei_decode_string(req->buf, &req->index, (char *)&value))
return error_set(res, GDE_ERR_DECODE);
for (int v = 0; v < size; v++)
values[v] = (double)value[v];
break;
}
/* Decode ordinary integer/double list */
case ERL_LIST_EXT: {
if (ei_decode_list_header(req->buf, &req->index, &size))
return error_set(res, GDE_ERR_DECODE);
for (int v = 0, temp; v < size; v++) {
ei_get_type(req->buf, &req->index, &type, &temp);
switch (type) {
/* Decode integer */
case ERL_SMALL_INTEGER_EXT:
case ERL_INTEGER_EXT: {
long value;
if (ei_decode_long(req->buf, &req->index, &value))
return error_set(res, GDE_ERR_DECODE);
values[v] = (double)value;
break;
}
/* Decode double */
case ERL_FLOAT_EXT: {
double value;
if (ei_decode_double(req->buf, &req->index, &value))
return error_set(res, GDE_ERR_DECODE);
values[v] = (double)value;
break;
}
/* Unsupported type */
default:
return error_set(res, GDE_ERR_TYPE);
}
}
/* A list always contains an empty list at the end */
if (ei_decode_list_header(req->buf, &req->index, NULL))
return error_set(res, GDE_ERR_DECODE);
break;
}
/* Unsupported type */
default:
return error_set(res, GDE_ERR_TYPE);
}
/* Sum up values */
for (int v = 0; v < size; v++)
sum += values[v];
/* Free allocated memory */
driver_free(values);
/* Encode resulting sum and return tuple */
ei_encode_tuple_header(res->buf, &res->index, 2);
ei_encode_atom(res->buf, &res->index, "ok");
ei_encode_double(res->buf, &res->index, sum);
/* Update counters */
drv->count++;
trd->count++;
}
void operator() (double a) const { ei_encode_double (buf, &idx, a); }
