void
CancelVibrate(const WindowIdentifier &id)
{
AssertMainThread();
// Although only active windows may start vibrations, a window may
// cancel its own vibration even if it's no longer active.
//
// After a window is marked as inactive, it sends a CancelVibrate
// request. We want this request to cancel a playing vibration
// started by that window, so we certainly don't want to reject the
// cancellation request because the window is now inactive.
//
// But it could be the case that, after this window became inactive,
// some other window came along and started a vibration. We don't
// want this window's cancellation request to cancel that window's
// actively-playing vibration!
//
// To solve this problem, we keep track of the id of the last window
// to start a vibration, and only accepts cancellation requests from
// the same window. All other cancellation requests are ignored.
if (InSandbox()) {
hal_sandbox::CancelVibrate(id);
}
else if (*gLastIDToVibrate == id.AsArray()) {
// Don't forward our ID to hal_impl. It doesn't need it, and we
// don't want it to be tempted to read it. The empty identifier
// will assert if it's used.
HAL_LOG(("CancelVibrate: Forwarding to hal_impl."));
hal_impl::CancelVibrate(WindowIdentifier());
}
}
bool
RegisterTheOneAlarmObserver(AlarmObserver* aObserver)
{
MOZ_ASSERT(!InSandbox());
MOZ_ASSERT(!sAlarmObserver);
sAlarmObserver = aObserver;
RETURN_PROXY_IF_SANDBOXED(EnableAlarm(), false);
}
void
SetProcessPriority(int aPid, ProcessPriority aPriority)
{
if (InSandbox()) {
hal_sandbox::SetProcessPriority(aPid, aPriority);
}
else {
hal_impl::SetProcessPriority(aPid, aPriority);
}
}
void
ModifyWakeLock(const nsAString& aTopic,
WakeLockControl aLockAdjust,
WakeLockControl aHiddenAdjust,
uint64_t aProcessID /* = CONTENT_PROCESS_ID_UNKNOWN */)
{
AssertMainThread();
if (aProcessID == CONTENT_PROCESS_ID_UNKNOWN) {
aProcessID = InSandbox() ? ContentChild::GetSingleton()->GetID() :
CONTENT_PROCESS_ID_MAIN;
}
PROXY_IF_SANDBOXED(ModifyWakeLock(aTopic, aLockAdjust,
aHiddenAdjust, aProcessID));
}
