jshort
inStream_readShort(PacketInputStream *stream)
{
jshort val = 0;
(void)readBytes(stream, &val, sizeof(val));
return JAVA_TO_HOST_SHORT(val);
}
jshort
PacketInputStream::read_short( )
{
jshort val = 0;
read_bytes(&val, sizeof(val));
return JAVA_TO_HOST_SHORT(val);
}
bool
PacketInputStream::receive_packet()
{
juint len, id;
int bytes_avail;
unsigned char uc;
SETUP_ERROR_CHECKER_ARG;
Transport::transport_op_def_t *ops = _transport_ops;
bytes_avail = ops->peek_bytes(&_transport, &len, sizeof(len));
if (bytes_avail < sizeof(len)) {
// Try later, not enough bytes to get the packet length
return false;
}
len = JAVA_TO_HOST_INT(len);
if (len < JDWP_HEADER_SIZE) {
return false;
}
if (len > JDWP_HEADER_SIZE) {
SAVE_CURRENT_EXCEPTION;
_input_data = PacketStream::get_buffer(len - JDWP_HEADER_SIZE JVM_NO_CHECK);
RESTORE_CURRENT_EXCEPTION;
if (_input_data.is_null()) {
// not enough memory for this packet buffer
flush_and_send_oom(ops);
return false;
}
}
ops->read_int(&_transport, &len);
len = JAVA_TO_HOST_INT(len);
if (len < JDWP_HEADER_SIZE) {
flush(ops);
return false;
}
set_data_len(len - JDWP_HEADER_SIZE);
ops->read_int(&_transport, &id);
id = JAVA_TO_HOST_INT(id);
set_id(id);
ops->read_bytes(&_transport, &uc, sizeof(uc), true);
set_flags(uc);
if (flags() & FLAGS_REPLY) {
short error_code;
ops->read_short(&_transport, &error_code);
error_code = JAVA_TO_HOST_SHORT(error_code);
set_error(error_code);
} else {
ops->read_bytes(&_transport, &uc, sizeof(uc), true);
set_cmd_set(uc);
ops->read_bytes(&_transport, &uc, sizeof(uc), true);
set_cmd(uc);
}
if (len > JDWP_HEADER_SIZE) {
// read in the whole packet
ops->read_bytes(&_transport, _input_data.base_address(),
len - JDWP_HEADER_SIZE, true);
}
_output_index = 0;
return true;
}
