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feat: /tmp/stay_awake and /tmp/stay_alive suspend-inhibit lock files #756

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feat: /tmp/stay_awake and /tmp/stay_alive suspend-inhibit lock files #756

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13 changes: 12 additions & 1 deletion workspace/all/common/api.c
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Original file line number Diff line number Diff line change
Expand Up @@ -3935,6 +3935,12 @@ void PWR_powerOff(int reboot)
}
}

// Suspend-inhibit lock files (see SystemDoc.md §5).
// /tmp/stay_awake → block autosleep (no screen-off, no deep sleep)
// /tmp/stay_alive → allow screen-off, block deep sleep
static int hasStayAwake(void) { return access("/tmp/stay_awake", F_OK) == 0; }
static int hasStayAlive(void) { return access("/tmp/stay_alive", F_OK) == 0; }

static void PWR_enterSleep(void)
{
SND_pauseAudio(true);
Expand Down Expand Up @@ -4014,6 +4020,11 @@ static void PWR_waitForWake(void)
sleep_ticks += 60000; // check again in a minute
continue;
}
if (hasStayAwake() || hasStayAlive())
{
sleep_ticks += 60000; // external lock-file override
continue;
}
if (PLAT_supportsDeepSleep())
{
int ret = PWR_deepSleep();
Expand Down Expand Up @@ -4090,7 +4101,7 @@ void PWR_enableAutosleep(void)
}
int PWR_preventAutosleep(void)
{
return SDL_AtomicGet(&pwr.is_charging) || !pwr.can_autosleep || GetHDMI();
return SDL_AtomicGet(&pwr.is_charging) || !pwr.can_autosleep || GetHDMI() || hasStayAwake();
}

// updated by PWR_updateBatteryStatus()
Expand Down
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