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backoff end time is never in the past.

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This commit is contained in:
Mathieu Lacage
2007-11-15 16:23:26 +01:00
parent 5ecad32251
commit 225df7593f
1 changed files with 16 additions and 15 deletions
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31
src/devices/wifi/dcf-manager.cc
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@@ -341,29 +341,30 @@ DcfManager::DoRestartAccessTimeoutIfNeeded (void)
DcfState *state = *i;
if (state->NeedsAccess ())
{
accessTimeoutNeeded = true;
expectedBackoffEnd = std::min (expectedBackoffEnd, GetBackoffEndFor (state));
Time tmp = GetBackoffEndFor (state);
if (tmp > Simulator::Now ())
{
accessTimeoutNeeded = true;
expectedBackoffEnd = std::min (expectedBackoffEnd, tmp);
}
}
}
if (accessTimeoutNeeded)
{
MY_DEBUG ("expected backoff end="<<expectedBackoffEnd);
if (expectedBackoffEnd > Simulator::Now ())
Time expectedBackoffDelay = expectedBackoffEnd - Simulator::Now ();
if (m_accessTimeout.IsRunning () &&
Simulator::GetDelayLeft (m_accessTimeout) > expectedBackoffDelay)
{
Time expectedBackoffDelay = expectedBackoffEnd - Simulator::Now ();
if (m_accessTimeout.IsRunning () &&
Simulator::GetDelayLeft (m_accessTimeout) > expectedBackoffDelay)
{
m_accessTimeout.Cancel ();
}
if (m_accessTimeout.IsExpired ())
{
m_accessTimeout = Simulator::Schedule (expectedBackoffDelay,
&DcfManager::AccessTimeout, this);
}
m_accessTimeout.Cancel ();
}
if (m_accessTimeout.IsExpired ())
{
m_accessTimeout = Simulator::Schedule (expectedBackoffDelay,
&DcfManager::AccessTimeout, this);
}
}
}
}
void
DcfManager::NotifyRxStartNow (Time duration)