ssize_t
sendmsg(
const iovec* iov,
int iovlen,
const MessageFlags& flags
) {
debug_assert_gt(iovlen, 0);
iovec iov0 = iov[0];
iov0.iov_len = 1;
return stream_socket.sendmsg(&iov0, 1, flags);
}
bool ReaderWriterLock::wrlock() {
EnterCriticalSection(cs);
if (active_writer_readers != 0) {
waiting_writers_count++;
debug_assert_gt(waiting_writers_count, 0);
LeaveCriticalSection(cs);
WaitForSingleObject(hReadyToWrite, INFINITE);
} else {
debug_assert_eq(active_writer_readers, 0);
active_writer_readers = MAKELONG(0, 1);
LeaveCriticalSection(cs);
}
return true;
}
const SocketAddress* SocketAddress::filter(int family) const {
debug_assert_gt(len(family), 0);
const SocketAddress* next_socket_address = this;
do {
if (next_socket_address->get_family() == family) {
return next_socket_address;
} else {
next_socket_address = next_socket_address->next_socket_address;
}
} while (next_socket_address != NULL);
WSASetLastError(WSAEAFNOSUPPORT);
return NULL;
}
void ReaderWriterLock::rdunlock() {
EnterCriticalSection(cs);
debug_assert_eq(HIWORD(active_writer_readers), 0);
debug_assert_gt(LOWORD(active_writer_readers), 0);
if (--active_writer_readers == 0) {
ResetEvent(hReadyToRead);
}
if (waiting_writers_count != 0 && active_writer_readers == 0) {
waiting_writers_count--;
active_writer_readers = MAKELONG(0, 1);
ReleaseSemaphore(hReadyToWrite, 1, NULL);
}
LeaveCriticalSection(cs);
}
