void rpcbuf::finish_request() {
int length = pptr() - rptr();
if (rptr() && length > 0) {
pbump(-length);
mystream().width(FIELDWIDTH);
mystream() << length;
if (_actualWidth != pptr() - rptr()) {
error("rpcbuf::finish_request: length field's width changed");
}
pbump(length - (pptr() - rptr()));
}
setr(nil);
}
int rpcbuf::overflow(int c) {
if (!_opened || allocate() == EOF) {
return EOF;
}
if (c == EOF) {
finish_request();
}
if (rptr() == pbase() && pptr() >= epptr() && !expand_p()) {
error("rpcbuf::overflow: out of memory");
return EOF;
}
int nwrite = (rptr() >= pbase()) ? rptr() - pbase() : out_waiting();
int count = 0;
while (count < nwrite) {
int nsent = write(_fd, pbase() + count, nwrite - count);
if (nsent < 0) {
sys_error("rpcbuf::overflow: write");
return EOF;
}
count += nsent;
}
if (rptr() > pbase()) {
Memory::copy(rptr(), pbase(), pptr() - rptr());
rbump(-nwrite);
}
pbump(-nwrite);
if (c != EOF) {
sputc(c);
}
return zapeof(c);
}
int rpcbuf::start_request() {
if (!_mystream || !_opened || allocate() == EOF) {
return EOF;
}
finish_request();
setr(pptr());
const int length = 0;
mystream().width(FIELDWIDTH);
mystream() << length;
_actualWidth = pptr() - rptr();
return 0;
}
int MessageBlock::resize(size_t nsize)
{
try {
DataBlock* ndb = new DataBlock(nsize);
memcpy(ndb->addr(), rptr(), std::min(nsize, size()));
wptr_ = size();
rptr_ = 0;
dblock_->dec_ref();
dblock_ = ndb;
}
catch (std::exception& ex)
{
SYSLOG_ERROR("MessageBlock resize from %ld to %ld failed: %s", (long)size(), (long)nsize, ex.what());
return -1;
}
return 0;
}