void PageThrottler::reportInterestingEvent()
{
if (m_throttleState == PageNotThrottledState)
return;
if (m_throttleState == PageThrottledState)
unthrottlePage();
m_throttleState = PageWaitingToThrottleState;
startThrottleHysteresisTimer();
}
void PageThrottler::setThrottled(bool isThrottled)
{
if (isThrottled) {
m_throttleState = PageWaitingToThrottleState;
startThrottleHysteresisTimer();
} else {
unthrottlePage();
stopThrottleHysteresisTimer();
}
}
void PageThrottler::preventThrottling()
{
// If we've already got events that block throttling we can increment
// and return early
if (m_activeThrottleBlockers++)
return;
if (m_throttleState == PageNotThrottledState)
return;
if (m_throttleState == PageThrottledState)
unthrottlePage();
m_throttleState = PageWaitingToThrottleState;
stopThrottleHysteresisTimer();
}
void PageThrottler::addActivityToken(PageActivityAssertionToken* token)
{
ASSERT(token && !m_activityTokens.contains(token));
m_activityTokens.add(token);
// If we've already got events that block throttling we can return early
if (m_activityTokens.size() > 1)
return;
if (m_throttleState == PageNotThrottledState)
return;
if (m_throttleState == PageThrottledState)
unthrottlePage();
m_throttleState = PageWaitingToThrottleState;
stopThrottleHysteresisTimer();
}
