static psckt_t *
psckt_setup(psckt_t *sock, void *ctx, psckt_cb_t *callback)
{
sock->callback = callback;
sock->ctx = ctx;
sock->ready = sock->released = sock->thread = INVALID_HANDLE_VALUE;
sock->finished = sock->waiting = 0;
sock->next = psckt_list;
psckt_list = sock;
if (callback) {
DWORD thread_id;
sock->ready = CreateEvent(0, 1, 0, 0); /* manual reset */
sock->released = CreateEvent(0, 0, 0, 0); /* auto reset */
sock->thread = CreateThread(NULL, 0, psckt_wait_thread, (LPVOID)sock,
0, &thread_id);
/* closing the thread handle does not terminate the thread, it merely
* permits the thread to fully terminate whenever psckt_wait_thread
* returns
* however, since the thread accesses sock->finished, ready, released,
* we cannot free sock until the thread finishes
*/
w_add_input(sock->ready, psckt_cb_manager, sock);
w_prepoll(psckt_prepoller, sock, 0);
}
return sock;
}
int
mfc_stdinit(void (**wout)(char*,long), void (**werr)(char*,long))
{ /* we are in worker thread here */
int result = 1;
*wout = *werr = 0;
w_sending = CreateEvent(0, 1, 0, 0);
if (w_sending) {
the_boss.m_pMainWnd->SendMessage(ID_CALL_FUNC, (WPARAM)0,
(LPARAM)&mfc_term_init);
w_add_input(w_sending, mfc_sender, 0);
*wout = mfc_stdout;
*werr = mfc_stderr;
result = 0;
}
return result;
}
static void
psckt_stop_thread(psckt_t *sock)
{
sock->finished = 1;
if (sock->ready != INVALID_HANDLE_VALUE) {
/* prevent yorick thread (this thread) from waiting for this socket */
w_add_input(sock->ready, 0, sock);
w_prepoll(psckt_prepoller, sock, 1);
sock->callback = 0;
sock->ctx = 0;
}
/* this sequence probably will cause psckt_wait_thread to complete
* however, nothing guarantees that shutdown will cause select to return,
* so it remains possible that thread is blocked in select after this
* therefore wait until closesocket to reap thread
*/
if (sock->fd!=INVALID_SOCKET && sock->released!=INVALID_HANDLE_VALUE) {
/* wait thread may be blocked on sock->fd select or sock->released wait */
SetEvent(sock->released); /* wake up wait thread, first way */
shutdown(sock->fd, SD_RECEIVE); /* wake up wait thread, second way */
}
}