static void
ser_console_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except)
{
struct ser_console_state *state = scb->state;
if (state == NULL)
{
thread_fn_type thread_fn;
int is_tty;
is_tty = isatty (scb->fd);
if (!is_tty && !fd_is_file (scb->fd) && !fd_is_pipe (scb->fd))
{
*read = NULL;
*except = NULL;
return;
}
state = xmalloc (sizeof (struct ser_console_state));
memset (state, 0, sizeof (struct ser_console_state));
scb->state = state;
if (is_tty)
thread_fn = console_select_thread;
else if (fd_is_pipe (scb->fd))
thread_fn = pipe_select_thread;
else
thread_fn = file_select_thread;
create_select_thread (thread_fn, scb, state);
}
*read = state->read_event;
*except = state->except_event;
/* Start from a blank state. */
ResetEvent (state->read_event);
ResetEvent (state->except_event);
ResetEvent (state->stop_select);
/* First check for a key already in the buffer. If there is one,
we don't need a thread. This also catches the second key of
multi-character returns from getch, for instance for arrow
keys. The second half is in a C library internal buffer,
and PeekConsoleInput will not find it. */
if (_kbhit ())
{
SetEvent (state->read_event);
return;
}
/* Otherwise, start the select thread. */
start_select_thread (state);
}
static void
ser_console_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except)
{
struct ser_console_state *state = scb->state;
if (state == NULL)
{
DWORD threadId;
int is_tty;
is_tty = isatty (scb->fd);
if (!is_tty && !fd_is_pipe (scb->fd))
{
*read = NULL;
*except = NULL;
return;
}
state = xmalloc (sizeof (struct ser_console_state));
memset (state, 0, sizeof (struct ser_console_state));
scb->state = state;
/* Create auto reset events to wake, stop, and exit the select
thread. */
state->start_select = CreateEvent (0, FALSE, FALSE, 0);
state->stop_select = CreateEvent (0, FALSE, FALSE, 0);
state->exit_select = CreateEvent (0, FALSE, FALSE, 0);
/* Create a manual reset event to signal whether the thread is
stopped. This must be manual reset, because we may wait on
it multiple times without ever starting the thread. */
state->have_stopped = CreateEvent (0, TRUE, FALSE, 0);
/* Create our own events to report read and exceptions separately. */
state->read_event = CreateEvent (0, FALSE, FALSE, 0);
state->except_event = CreateEvent (0, FALSE, FALSE, 0);
if (is_tty)
state->thread = CreateThread (NULL, 0, console_select_thread, scb, 0,
&threadId);
else
state->thread = CreateThread (NULL, 0, pipe_select_thread, scb, 0,
&threadId);
}
*read = state->read_event;
*except = state->except_event;
/* Start from a blank state. */
ResetEvent (state->read_event);
ResetEvent (state->except_event);
ResetEvent (state->stop_select);
/* First check for a key already in the buffer. If there is one,
we don't need a thread. This also catches the second key of
multi-character returns from getch, for instance for arrow
keys. The second half is in a C library internal buffer,
and PeekConsoleInput will not find it. */
if (_kbhit ())
{
SetEvent (state->read_event);
return;
}
/* Otherwise, start the select thread. */
SetEvent (state->start_select);
}
