internal SuspendToken(SuspendableObject parent)
{
var suspendLevel = System.Threading.Interlocked.Increment(ref parent._suspendLevel);
_parent = parent;
if (1 == suspendLevel)
{
try
{
_parent.OnSuspended();
}
catch (Exception)
{
System.Threading.Interlocked.Decrement(ref parent._suspendLevel);
_parent = null;
throw;
}
}
}
internal void ResumeTemporarily()
{
Exception ex1 = null;
Exception ex2 = null;
Exception ex3 = null;
// Try to bring the suspend level to 0
int suspendLevel = _parent._suspendLevel;
while (suspendLevel != 0)
{
if (suspendLevel > 0)
{
if (suspendLevel == 1)
{
try
{
_parent.OnAboutToBeResumed();
}
catch (Exception ex)
{
ex1 = ex;
}
}
suspendLevel = System.Threading.Interlocked.Decrement(ref _parent._suspendLevel);
++_numberOfSuspendLevelsAbsorbed;
if (suspendLevel == 0)
{
try
{
_parent.OnResume();
}
catch (Exception ex)
{
ex2 = ex;
}
}
}
else if (suspendLevel < 0)
{
suspendLevel = System.Threading.Interlocked.Increment(ref _parent._suspendLevel);
--_numberOfSuspendLevelsAbsorbed;
if (suspendLevel == 1)
{
try
{
_parent.OnSuspended();
}
catch (Exception ex)
{
ex3 = ex;
}
}
}
}
if (null != ex1)
{
throw ex1;
}
if (null != ex2)
{
throw ex2;
}
if (null != ex3)
{
throw ex3;
}
}
internal SuspendToken(SuspendableObject parent)
{
var suspendLevel = System.Threading.Interlocked.Increment(ref parent._suspendLevel);
_parent = parent;
if (1 == suspendLevel)
{
try
{
_parent.OnSuspended();
}
catch (Exception)
{
System.Threading.Interlocked.Decrement(ref parent._suspendLevel);
_parent = null;
throw;
}
}
}