void SenderImpl::waitForCapacity()
{
//TODO: add option to throw exception rather than blocking?
if (capacity <= (flushed ? checkPendingSends(false) : outgoing.size())) {
//Initial implementation is very basic. As outgoing is
//currently only reduced on receiving completions and we are
//blocking anyway we may as well sync(). If successful that
//should clear all outstanding sends.
session.sync();
checkPendingSends(false);
}
//flush periodically and check for conmpleted sends
if (++window > (capacity / 4)) {//TODO: make this configurable?
checkPendingSends(true);
window = 0;
}
}
uint32_t SenderImpl::checkPendingSends(bool flush) {
sys::Mutex::ScopedLock l(lock);
return checkPendingSends(flush, l);
}
