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add option idlecheckpoint

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New experimental option

This requires platform support to be useful. Currently an
implementation for Windows TTY console is included.

A Unix TTY implementation should be achievable I would think,
but I haven't pursued that, at least not yet (contributions welcome).
I'm not sure whether Qt or X11 interfaces offer a similar
timeout capability..

How it works:

When idlecheckpoint in on, if the wait for a new input is idle for
10 seconds (length of time to waite is controlled by
IDLECHECKPOINT_WAIT_TIME #define in hack.h), save_currentstate() is
called to bring everything up-to-date should a hangup or crash occur.
The input wait then continues/resumes.

The save_currentstate() call is only executed once per input request.
This commit is contained in:
nhmall
2026-04-27 19:22:04 -04:00
parent b7f66f9723
commit a090ba90a1
8 changed files with 92 additions and 33 deletions
Download Patch File Download Diff File Expand all files Collapse all files
sys/windows/consoletty.c
+57 -32
View File
@@ -3097,7 +3097,8 @@ default_checkinput(
DWORD dwWait;
#endif
int ch = 0;
boolean valid = 0, done = 0;
boolean valid = 0, done = 0, done_a_checkpoint = FALSE;
DWORD how_many_milliseconds = 0;
#ifdef QWERTZ_SUPPORT
if (numberpad & 0x10) {
@@ -3107,54 +3108,78 @@ default_checkinput(
qwertz = FALSE;
}
#endif
done_a_checkpoint = FALSE;
how_many_milliseconds = (iflags.idlecheckpoint)
? (IDLECHECKPOINT_WAIT_TIME * 1000)
: INFINITE;
while (!done) {
#if defined(SAFERHANGUP)
dwWait = WaitForSingleObjectEx(hConIn, // event object to wait for
INFINITE, // waits indefinitely
how_many_milliseconds,
TRUE); // alertable wait enabled
#if defined(SAFERHANGUP)
if (dwWait == WAIT_FAILED)
return '\033';
#endif
ReadConsoleInput(hConIn, ir, 1, count);
if (mode == 0) {
if ((ir->EventType == KEY_EVENT) && ir->Event.KeyEvent.bKeyDown) {
ch = default_processkeystroke(hConIn, ir, &valid, numberpad, 0);
done = valid;
}
} else {
if (*count > 0) {
if (ir->EventType == KEY_EVENT
#ifdef INSURANCE
if (iflags.idlecheckpoint
&& dwWait == WAIT_TIMEOUT && !done_a_checkpoint) {
/* no input for 30 seconds, so let's take
* advantage and do a game checkpoint,
* then resume the wait.
*/
save_currentstate();
done_a_checkpoint = TRUE;
} else
#endif /* INSURANCE */
{
ReadConsoleInput(hConIn, ir, 1, count);
if (mode == 0) {
if ((ir->EventType == KEY_EVENT)
&& ir->Event.KeyEvent.bKeyDown) {
ch = default_processkeystroke(hConIn, ir, &valid,
numberpad, 0);
done = valid;
}
} else {
if (*count > 0) {
if (ir->EventType == KEY_EVENT
&& ir->Event.KeyEvent.bKeyDown) {
#ifdef QWERTZ_SUPPORT
if (qwertz)
numberpad |= 0x10;
if (qwertz)
numberpad |= 0x10;
#endif
ch = default_processkeystroke(hConIn, ir, &valid, numberpad, 0);
ch = default_processkeystroke(hConIn, ir, &valid,
numberpad, 0);
#ifdef QWERTZ_SUPPORT
numberpad &= ~0x10;
numberpad &= ~0x10;
#endif
if (valid)
return ch;
} else if (ir->EventType == MOUSE_EVENT) {
if ((ir->Event.MouseEvent.dwEventFlags == 0)
&& (ir->Event.MouseEvent.dwButtonState & MOUSEMASK)) {
cc->x = ir->Event.MouseEvent.dwMousePosition.X + 1;
cc->y = ir->Event.MouseEvent.dwMousePosition.Y - 1;
if (valid)
return ch;
} else if (ir->EventType == MOUSE_EVENT) {
if ((ir->Event.MouseEvent.dwEventFlags == 0)
&& (ir->Event.MouseEvent.dwButtonState
& MOUSEMASK)) {
cc->x =
ir->Event.MouseEvent.dwMousePosition.X + 1;
cc->y =
ir->Event.MouseEvent.dwMousePosition.Y - 1;
if (ir->Event.MouseEvent.dwButtonState & LEFTBUTTON)
*mod = CLICK_1;
else if (ir->Event.MouseEvent.dwButtonState
& RIGHTBUTTON)
*mod = CLICK_2;
if (ir->Event.MouseEvent.dwButtonState
& LEFTBUTTON)
*mod = CLICK_1;
else if (ir->Event.MouseEvent.dwButtonState
& RIGHTBUTTON)
*mod = CLICK_2;
#if 0 /* middle button */
else if (ir->Event.MouseEvent.dwButtonState & MIDBUTTON)
*mod = CLICK_3;
#endif
return 0;
return 0;
}
}
}
} else
done = 1;
} else
done = 1;
}
}
}
return mode ? 0 : ch;