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stmhal: Change cc3k.recv to only make 1 call to underlying recv(). 

Also make cc3k.send and cc3k.recv independent functions (not wrapped by
stream write/read).  Also make wiznet5k.recv more memory efficient.

This might address issue #920.
This commit is contained in:
Damien George 2014-10-22 01:10:53 +01:00
parent 481d714bd5
commit 3e42570538
2 changed files with 33 additions and 37 deletions
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63
stmhal/modcc3k.c
View File

@ -365,57 +365,57 @@ STATIC void cc3k_socket_print(void (*print)(void *env, const char *fmt, ...), vo
printf("<CC3k.socket fd=%d>", self->fd);
}
STATIC mp_uint_t cc3k_socket_send(mp_obj_t self_in, const void *buf, mp_uint_t size, int *errcode) {
STATIC mp_obj_t cc3k_socket_send(mp_obj_t self_in, mp_obj_t buf_in) {
cc3k_socket_obj_t *self = self_in;
if (cc3k_get_fd_closed_state(self->fd)) {
CC3000_EXPORT(closesocket)(self->fd);
*errcode = EPIPE;
return 0;
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(EPIPE)));
}
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(buf_in, &bufinfo, MP_BUFFER_READ);
// CC3K does not handle fragmentation, and will overflow,
// split the packet into smaller ones and send them out.
int bytes = 0;
while (bytes < size) {
int n = MIN((size-bytes), MAX_TX_PACKET);
n = CC3000_EXPORT(send)(self->fd, buf+bytes, n, 0);
mp_int_t bytes = 0;
while (bytes < bufinfo.len) {
int n = MIN((bufinfo.len - bytes), MAX_TX_PACKET);
n = CC3000_EXPORT(send)(self->fd, bufinfo.buf + bytes, n, 0);
if (n <= 0) {
bytes = n;
*errcode = CC3000_EXPORT(errno);
break;
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(CC3000_EXPORT(errno))));
}
bytes += n;
}
return bytes;
return MP_OBJ_NEW_SMALL_INT(bytes);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(cc3k_socket_send_obj, cc3k_socket_send);
STATIC mp_uint_t cc3k_socket_recv(mp_obj_t self_in, void *buf, mp_uint_t size, int *errcode) {
STATIC mp_obj_t cc3k_socket_recv(mp_obj_t self_in, mp_obj_t len_in) {
cc3k_socket_obj_t *self = self_in;
if (cc3k_get_fd_closed_state(self->fd)) {
CC3000_EXPORT(closesocket)(self->fd);
return 0;
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(EPIPE)));
}
// recv MAX_RX_PACKET
int bytes = 0;
while (bytes < size) {
int n = MIN((size-bytes), MAX_RX_PACKET);
n = CC3000_EXPORT(recv)(self->fd, buf+bytes, n, 0);
if (n == 0) {
break;
} else if (n < 0) {
bytes = n;
*errcode = CC3000_EXPORT(errno);
break;
}
bytes += n;
}
// recv upto MAX_RX_PACKET
mp_int_t len = mp_obj_get_int(len_in);
len = MIN(len, MAX_RX_PACKET);
return bytes;
byte *buf;
mp_obj_t ret_obj = mp_obj_str_builder_start(&mp_type_bytes, len, &buf);
len = CC3000_EXPORT(recv)(self->fd, buf, len, 0);
if (len == 0) {
return mp_const_empty_bytes;
} else if (len < 0) {
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(CC3000_EXPORT(errno))));
} else {
return mp_obj_str_builder_end_with_len(ret_obj, len);
}
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(cc3k_socket_recv_obj, cc3k_socket_recv);
STATIC mp_obj_t cc3k_socket_bind(mp_obj_t self_in, mp_obj_t addr_obj) {
cc3k_socket_obj_t *self = self_in;
@ -565,9 +565,8 @@ STATIC mp_obj_t cc3k_socket_close(mp_obj_t self_in) {
STATIC MP_DEFINE_CONST_FUN_OBJ_1(cc3k_socket_close_obj, cc3k_socket_close);
STATIC const mp_map_elem_t cc3k_socket_locals_dict_table[] = {
// TODO read/write/send/recv distinctions
{ MP_OBJ_NEW_QSTR(MP_QSTR_send), (mp_obj_t)&mp_stream_write_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_recv), (mp_obj_t)&mp_stream_read_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_send), (mp_obj_t)&cc3k_socket_send_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_recv), (mp_obj_t)&cc3k_socket_recv_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_bind), (mp_obj_t)&cc3k_socket_bind_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_listen), (mp_obj_t)&cc3k_socket_listen_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_accept), (mp_obj_t)&cc3k_socket_accept_obj },
@ -644,8 +643,6 @@ mp_uint_t cc3k_ioctl(mp_obj_t self_in, mp_uint_t request, int *errcode, ...) {
}
STATIC const mp_stream_p_t cc3k_socket_stream_p = {
.read = cc3k_socket_recv,
.write = cc3k_socket_send,
.ioctl = cc3k_ioctl,
.is_text = false,
};

7
stmhal/modwiznet5k.c
View File

@ -415,12 +415,11 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_2(wiznet5k_socket_send_obj, wiznet5k_socket_send)
STATIC mp_obj_t wiznet5k_socket_recv(mp_obj_t self_in, mp_obj_t len_in) {
wiznet5k_socket_obj_t *self = self_in;
mp_int_t len = mp_obj_get_int(len_in);
uint8_t *buf = m_new(uint8_t, len);
byte *buf;
mp_obj_t ret_obj = mp_obj_str_builder_start(&mp_type_bytes, len, &buf);
mp_int_t ret = WIZCHIP_EXPORT(recv)(self->sn, buf, len);
check_sock_return_value(ret);
mp_obj_t ret_buf = mp_obj_new_bytes(buf, ret);
m_del(uint8_t, buf, len);
return ret_buf;
return mp_obj_str_builder_end_with_len(ret_obj, len);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(wiznet5k_socket_recv_obj, wiznet5k_socket_recv);